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Philip Bos

Professor; Associate Director, LCI

Dr. Philip J. Bos is Associate Director of the Liquid Crystal Institute and a Professor in the Chemical Physics Interdisciplinary Program at Kent State University. He is the inventor of the pi cell and an alignment method for SmC* devices. His research interests include novel liquid crystal devices and applications.

Education

Ph.D. Physics Kent State University May, 1978
(Deuterium Magnetic Resonance Studies of Orientational Order in the Liquid Crystalline Phases)

M.A. Physics Kent State University Sept., 1974

B.A. Physics Hope College June, 1973

Scholarly, Creative & Professional Activities


3 Book Chapters

The Effect of Polymer Networks on Twisted Nematic and SuperTwisted Nematic Displays . chapter by P.J.Bos, D. Fredley, J. Li, J. Rahman, Book edited by G. Crawford, Title of Book: Liquid Crystals in Complex Geometries Formed by Polymer and Porous Networks. Publisher : Taylor and Francis

Liquid Crystal Shutter Systems for Time-Multiplexed stereoscopic Displays in Stereo Computer Graphics and Other True 3D Technologies , Princeton Univ Press

Improvement of the Viewing Angle for Display Devices with Gray Scale, P. J. Bos, chapter in Liquid Crystals in the Nineties and Beyond Ed Satyendra Kumar, publisher: World Scientific Publishing. c 1995

Refereed Publications

Journal Articles:

“Finite-difference time-domain simulation of a liquid-crystal optical phased array,” X. Wang, B. Wang, P. Bos, J. Anderson, J. Pouch, F. Miranda, J. Opt. Soc. A A 22, No. 2, 346-354 (2005).

“Methods to obtain high-contrast-ratio twisted nematic liquid crystal device at wavelength of 1.55µm,” B. Wang, Y. Zhang, X. Wang, P. Bos, Jpn. J. Appl. Phys., 44 No. 3, 1344-1347 (2005).

“Optimizing the nematic liquid crystal relaxation speed by magnetic field,” B. Wang, X. Wang, P. Bos, J. Appl. Phys. 96, No. 4, 1785-1789 (2004).

“Performance evaluation of a liquid-crystal-on-silicon spatial light modulator,” X. Wang, B. Wang, J. Pouch, F. Miranda, J. Anderson, P. Bos, Opt. Eng. 43, No. 11, 2769-2774 (2004).

“The geometrical optics approach for multidimensional liquid crystal cells,” G. Panasyuk, J. Kelly, P. Bos, E. Gartland, D. Allender, Liq. Cryst. 31, No. 11, 1503-1515 (2004).

“Poincare sphere analysis of reflective liquid crystal device,” Y. Zhang, B. Wang, D. Chung, P. Bos, Jpn. J. Appl. Phys., Part 1, v. 43 no. 10, 7125-7128 (2004).

“Fast switching polymer stabilized splay cell (PSSC),” V. Sergan, X. Wang, P. Bos, G. Sharp, Mol. Cryst. Liq. Cryst. 410, 1015-1021 (2004).

“Defect-free bistable C1 surface stabilized ferroelectric liquid crystal display,” C. Wang, M. Wand, M. Handschy, P. Bos, Jpn. J. Appl. Phys. 43, 3479-3483 June (2004).

“Generalized spectroscopic ellipsometry and Mueller-matrix study of twisted nematic and super twisted nematic liquid crystals,” J. Hilfiker, B. Johs, C. Herzinger, J. Elman, E. Montbach, D. Bryant, P. Bos, Thin Solid Films 455, 596-600 May 1, (2004).

“Finite-difference time-domain calculations of a liquid-crystal-based switchable Bragg grating,” B. Wang, X. Wang, P. Bos, J. Opt. Soc. Am. A 21, 1066-1072 June (2004).

“Compensating a twisted nematic liquid crystal display with matched wavelength dispersion retarders,” E. Montbach, P. Bos, W. Gambogi, Jpn. J. Appl. Phys. 43, 1376-1383 April (2004).

“Computing the liquid crystal director field in optical phased arrays,” G. Barrick, P. Bos, C. Titus, Opt. Eng. 43, 924-932 April (2004).

“Finite-difference time-domain optical calculations of polymer-liquid crystal composite electrodiffractive device,” B. Wang, D. Chung, P. Bos, Jpn. J. Appl. Phys. 43, 176-181 January (2004).

“Light propagation in variable-refractive-index materials with liquid-crystal-infiltrated microcavities,” B. Wang, P. Bos, C. Hoke, Journal of the Optical Society of America A: Optics and Image Science, and Vision. v. 20 no. 11, 2123-2130 November (2003).

“Fast Q-tensor method for modeling the dynamics of defects in a liquid crystal director field,” G. Lee, P. Bos, S. Ahn, K. Kim, Phys. Rev. E., 67, 4 1, 417151-417157 April (2003).

“Wide-angle achromatic prism beam steering for infrared countermeasure applications,” B. Duncan, P. Bos, V. Sergan, Optical Engineering, 42, 4, 1038-1047 April (2003).

“A defect free bistable C1 SSFLC device,” C. Wang, P. Bos, J. of Information Display, 4, 1, 1 (2003).

“Synthesis of a color image display using birefringent filters,” S. Saeed, P. Bos, Optical Engineering, 41, 1, 167-175 (2002).

“Viewing angle performance of a polarization interference filter based passive matrix display,” S. Saeed, P. Bos, Jap. J. Appl. Phys., Part 1: Regular Papers and Short Notes and Review Papers, 41, 4, 2040-2045 (2002).

“Long term bistable twisted nematic liquid crystal display and its computer simulations,” B. Wang, J. Anderson, C. Hoke, D. Chung, P. Bos, Jap. J. Appl. Phys., Part 1: Regular Papers and Short Notes and Review Papers, 41, 5 A, 2939-2943 (2002).

“Fast Q-tensor method for modeling liquid crystal director configurations with defects,” G. Lee, J. Anderson, P. Bos, Appl. Phys. Lett. 81, 21, 3951-3953, November (2002).

“Influence of the polymer network on the switching behaviors in the polymer stabilized ferroelectric liquid crystals,” J. Pirs, P. Bos, R. Petkovsek, S. Kralj, S. Pirs, S. Zumer, T. Matuszczyk, Jap. J. Appl. Phys., Part 1: Regular Papers and Short Notes and Review Papers, 41, 10, 6011-6015, October (2002).

“Multispectrum, spatially addressable polarization interference filter,” S. Saeed, P. Bos, Journal of the Optical Society of America A: Optics and Image Science, and Vision, 19, 11, 2301-2312, November (2002).

“Lowest energy layer structure for twist states SSFLC device,” C. Wang, S. Kumar, M. Wand, P. Bos, Ferroelectrics 278, 79 (2002).

“Asymmetric transmissive behavior of liquid crystal diffraction gratings,” C. Titus, J. Kelly, E. Gartland, S. Shiyanovskii, J. Anderson, P. Bos, Optics Letters, Vol 26, 1188 (2001).

“Design optimized bistable twisted nematic liquid crystal display,” B. Wang, P. Bos, J. Appl. Phys. 90, 552-555 (2001).

"How to achieve zigzag free Sm-C* state with a low pretilt angle: A numerical calculation," C. Wang, R. Kurihara, P. Bos, S. Kobayashi, J. Appl. Phys. 90, 4452-4455 (2001).

"Computer simulation of the homeotropic to focal conic transition in cholesterics," J. Anderson, P. Watson, T. Ernst, P. Bos, Mol. Cryst. Liq. Cryst. 366, 909-918 (2001).

“A method of generating full color in a liquid crystal display using birefringent filters,” S. Saeed, P. Bos, Z. Li, Jpn. J. Appl. Phys. 40, 3266-3271 (2001).

“Computer simulation of the homeotropic to planar transition in cholesteric liquid crystals,” P. Watson, J. Anderson, V. Sergan, P. Bos, Liquid Crystals 28, 1-15 (2001).

“Comparisons of the vector method and tensor method for simulating liquid crystal devices,” J. Anderson, P. Watson, P. Bos, Liquid Crystals 28, 109-115 (2001).

“Study of relaxation in cholesteric liquid crystals after reduction of an electric field,” J. Anderson, P. Watson, P. Bos, Liquid Crystals 28, 945-968 (2001).

“Twist-energy-driven Helfrich modulations in cholesteric liquid crystals illustrated in the transient planar to planar transition,” P. Watson, J. Anderson, P. Bos, Phys. Rev. E (Part B), 62, 3719-3723 (2000).

“Multidimensional alignment structure for the liquid crystal director field,” C. Hoke, P. Bos, J. Appl. Phys. 88, 2302-2304 (2000).

“Methods and concerns of compensating in-plane switching liquid crystal displays,” J. Anderson, P. Bos, Jpn. J. Appl. Phys. 39, 6388-6392 (2000).

“Polarized infrared study of a polymer network deformation in a nematic liquid crystal host,” C. Hoke, J. Li, Y. Lin, L. Chien, P. Bos, S. Hudson, J. Koenig, Liq. Cryst., 27, 359-363, March (2000).

“Computer simulation evidence of the transient planar state during the homeotropic to focal conic transition in cholesteric liquid crystals,” J. Anderson, P. Watson, T. Ernst, P. Bos, Phys. Rev. E, 2000 3951-3960, April (2000).

“Mechanism of relaxation from electric field induced homeotropic to planar texture in cholesteric liquid crystals,” V. Sergan, Y. Reznikov, J. Anderson, P. Watson, J. Ruth, P. Bos, Mol. Cryst. Liq. Cryst., 330, 1339 (1999).

“The transition mechanism of the transient planar to planar director configuration change in cholesteric liquid crystal displays,” P. Watson, J. Anderson, V. Sergan, P. Bos, Liq. Cryst., 26, 1307-1314, September (1999).

“Modulated structures with electric field controlled direction and periodicity in SmC* liquid crystals,” D. Subacius, D. Voloschenko, P. Bos, O. Lavrentovich, Liq. Cryst. 26, 295-298 (1999).

"Optical compensation of liquid crystal materials using negative birefringence compensation films," C. Hoke, H. Mori, P. Bos, Jpn. J. Appl. Phys. 38, L642-L645 (1999).

"Optical performance of the pi cell compensated with a negative birefringence films and an a-plate," H. Mori, P. Bos, Jpn. J. Appl. Phys. 38, 2837-2844 (1999).

"Characteristic times in the homeotropic to planar transition in cholesteric liquid crystals," P. Watson, V. Sergan, J. Anderson, J. Ruth, P. Bos, Liq. Cryst. 26, 731-736 (1999).

"Comparison of analytical calculations to finite-difference time-domain simulations of one-dimensional spatially varying anisotropic liquid crystal structures," C. Titus, P. Bos, J. Kelly, E. Gartland, Jr., Jpn. J. Appl. Phys. 38, 1488-1494 (1999).

"Multidimensional director modeling using the Q tensor representation," H. Mori, E. Gartland, Jr., J. Kelly, P. Bos, Jpn. J Appl. Phys. 38, 135-146 (1999).

"Possibility of stereoscopic displays by using a viewing angle dependence of twisted nematic liquid crystal cells," H. Okada, J. Chen, P. Bos, IEEE Trans. On Electron Devices 48, 1445-1452 (1998)

“Patterned alignment, liquid crystal diffractive spatial light modulators & devices,” C. Holton, P. Bos, M. Miller, W. Glenn, Proc. SPIE, 3292 (1998).

“In-plane liquid crystal beam steering devices with a beam separation structure,” H. Okada, P. Bos, H. Onnagawa, Jpn. J. Appl. Phys. 37, 2576-2580 (1998).

“Effect of surface topography on defect formation in surface stabilized ferroelectric devices,” P. Watson, P. Bos, J. Pirs, Phys.Rev. E. 56, R3769-R3771 (1997).

“ Efficient, polarization-independent, reflective liquid crystal phase grating,” C. Titus, P. Bos, Appl. Phys. Lett. 71, 2239-2241 (1997).

“Cholesteric gratings with field-controlled period,” D. Subacius, S. Shiyanovskii, P. Bos, O. Lavrentovich, Appl. Phys. Lett. 71, 3323-3325 (1997).

“A simple multi-mode stereoscopic liquid crystal display,” J. Chen, K. Kim, N. Kim, J. Souk, P. Bos, S. Shin, Jpn. J. Appl. Phys. 36, L1685-L1688 (1997).

“Switchable diffractive cholesteric gratings,” D.Subacius, P. Bos, O. Lavrentovich, Appl. Phys. Lett, 71, 1350-1372 (1997).

“The effect of material parameters on the hysteresis of bistable STN displays,” J. Li, C. Hoke, P. Bos, Mol. Cryst. Liq. Cryst. 304, 113 (1997).

“The investigation of domain instability in the four domain twisted nematic configurations.” J. Chen, J. Li, C. Hoke, D. Johnson, P. Bos, Mol.Cryst.Liq.Cryst. 302, 151 (1997).

“The effect of polymer networks on the electro-distortional characteristics of nematic liquid crystals,” J. Li, J. Anderson, C. Hoke, T. Nose, P. Bos, Mol.Cryst.Liq.Cryst. 301, 261 (1997).

“Effect of low polymer content in a liquid crystal microlens,” T. Nose, S. Masuda, S. Sato, J. Li, L-C Chien, P. Bos, Optics Letters 22, 351 (1997).

“High efficiency light valve projectors and high efficiency laser light sources,” W. Glenn, C. Holton, G. Dixon, P. Bos, SMPTE Journal 106, 4, 210 (1997).

“The high-field cured polymer networks in nematic liquid crystals,” J. Li, J. Anderson, C. Hoke, T. Nose, P. Bos, Jpn. J. Appl. Phys. 35, L1342 (1996).

“High-speed addressing of a 0-360 bistable twisted nematic liquid crystal display,” C. Hoke, J. Li, J. Kelly, P. Bos, Jpn. J. Appl. Phys. 36, L227 (1996).

“Super-twisted nematic LCDs with multi-domain structures,” J. Li, E. Lee, H. Vithana, P. Bos, Jpn. J. Appl. Phys. 35, L1446 (1996).

“Four-domain twisted nematic liquid crystal display fabricated by reverse rubbing polyimide process,” J. Chen, P. Bos, D. Johnson, D. Bryant, S. Jamal, J. Kelly, J. Appl. Phys. 80, 4, 1985 (1996).

“A model of liquid crystal alignment by exposure to linearly polarized ultraviolet light,” J. Chen, D. Johnson, P. Bos, X. Wang, J. West, Phys. Rev. E., 54, 2, 599 (1996).

“Polymer stabilized STN devices,” D. Fredley, J. Li, B. Quinn, P. Bos, J. of SID, 4, No. 2, 89 (1996).

“Radially and azimuthally oriented liquid crystal alignment patterns fabricated by linearly polarized ultraviolet exposure process,” J. Chen, P. Bos, S. Sprunt, D. Johnson, Appl. Phys. Lett. 68, 885 (1996).

“Optimization of luminance for optical-mode-interference (OMI) displays,” J. Li, J. Kelly, C. Hoke, P. Bos, J. of SID, 4, 2, 95 (1996).

“Studies of bistability of highly twisted nematics,” J. Li, C. Hoke, P. Bos, Jpn. J. Appl. Phys. 35, L706 (1996).

“Nearly homeotropic aligned four-domain liquid crystal display with wide viewing angle,” H. Vithana, D. Johnson, P. Bos, R. Herke, Y. Fung, S. Jamal, Jpn. J. Appl. Phys. 35, 2222 (1996).

“Controlled tilted homeotropic alignment of liquid crytals for display applications,” H. Vithana, D. Johnson, P. Bos, Jpn. J. Appl. Phys. 35, L320, (1996).

“Four domain twisted nematic liquid crystal display fabricated by two alignment layers with low and high pretilt angles,” J. Chen, P. Bos, D. Johnson, J. Kelly, N. Kim, J. Crow, Jpn J. Appl. Phys. Part 2, Letters, 35, 5A, L558 (1996).

“An optically active diffractive (OAD) device for a high efficiency diffractive light valve,” P. Bos, J. Chen, J. Doane, B. Smith, C. Holton, W. Glenn, J. of SID, 3/4, 195, (1995).

“Simple four-domain twisted nematic liquid crystal display,” J. Chen, P. Bos, D. Bryant, D. Johnson, S. Jamal, J. Kelly, Appl. Phys Lett. 67 (14) 2, 990, October (1995).

“An electro-optically controlled liquid crystal diffraction grating,” J. Chen, P. Bos, H. Vithana, D. Johnson, Appl. Phys. Lett. 67 (18), 2588, 1995 (R).

“Contrast and color uniformity optimization of an LCD pi cell pixel,” M. Flynn, P. Bos, Mol. Cryst. Liq. Cryst. 263, 377-387 (1995).

“Dynamic drive for bistable reflective cholesteric displays: a rapid addressing scheme,” X. Huang, D. Yang, P. Bos, J. Doane. (R), J. of the SID, 3/4, 165 (1995).

“Time sequential stereoscopic displays: the contribution of phosphor persistence to the "Ghost" image intensity,” P. Bos, The Journal of Three Dimensional Images Vol 8, No 1, 69-72 (1994).

“Field-sequential stereoscopic viewing systems using passive glasses,” P. Bos, T. Haven (J) Proc. of SID 30/1, 39 (1989).

“A method for director alignment of SmC* devices,” P. Bos, K. Koehler/Beran (R) Ferroelectrics, 85, 15 (1988).

“A full-color field sequential color display,” P. Bos, T. Buzak, R. Vatne (J) Proc. of the SID, 26, 157 (1985).

“The ?-cell , a fast liquid-crystal optical switching device,” P. Bos, K. Koehler/Beran (R), Mol. Cyst. Liq. Cryst. 113, 329 (1984).

“New LC/CRT field sequential color display,” R. Vatne, P. Johnson, P. Bos, Proc. SID 25, 31 (1984)

“Optical bounce removal and turn-off time reduction in twisted nematic displays,” R. Hubbard, P. Bos (R), IEEE ED-28, 6, 723 (1981).

“Removal of the optical bounce and turn-off time reduction in twisted nematic displays,” R. Hubbard, P. Bos, Proc. of the SID 22, 4, 297 (1981).

“Direct NMR observation of rotational freeze-out in the smectic-c phase,” D. Photinos, P. Bos, M. Neubert, J. Doane. (R) Phys. Rev. A 23 6, 3346 (1981).

“Liquid crystals as observed by NMR,” J. Doane, P. Bos, N. Vaz, A. Shetty. (R), Ferroelectrics, 24, 203 (1980).

“Molecular and relative segmental order in nematic and smectic C phases: a nuclear magnetic resonance study,” P. Bos, A. Shetty, J. Doane, M. Neubert. (R), J. Chem Phys. 73(2), 733 (1980).

“NMR measurement of biaxial molecular order in the smectic-c phase,” D. Photinos, P. Bos, J. Doane, M. Neubert. (R), Phys. Rev. A 20(5), 2203 (1979).

“NMR in spinning samples of biaxial liquid crystals,” P. Collings, D. Photinos, P. Bos, P. Ukleja, J. Doane. (R) Phys. Rev. Lett. B42(15), 996 (1979).

“Molecular order versus conformational change in the liquid crystal phases,” P. Bos, J. Doane, (R) Phys. Rev. Lett. 40 (15), 1030 (1978).

“Molecular orientational order and nmr in the uniaxial and biaxial phases,” P. Bos, J. Pirs, P. Ukleja, J. Doane, M. Neubert (R), Mol. Cryst. Liq. Cryst. 40, 59 (1977).

Conference Articles:

“Two-dimensional dynamic modeling of splay to bend transition in pi cell or BTN device at high voltage,” Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, SID Intl. Symp. Digest Tech Papers XXXVI, 1782 (2005).

“Fast VAN LCoS Microdisplay,” J. Anderson, C. Cheng, P. Bos, SID Intl. Symp. Digest Tech Papers XXXVI, 1366 (2005).

“Reflective Polarization Independent LC Phase Modulator with Polymer Wall,” Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, SID Intl. Symp. Digest Tech Papers XXXVI, 1178 (2005).

“Switchable optical phased prism arrays for beam steering,” J. Shi, P. Bos, B. Winker, P. McManamon, SPIE 5553, No. 1, 102-111 (2004).

“Spatial resolution limitation of liquid crystal spatial light modulator,” X. Wang, B. Wang, P. McManamon, III, J. Pouch, F. Miranda, J. Anderson, P. Bos, Advanced Wavefront Control: Methods, Devices and Applications II, 2-3 (2004).

“Holographic three-dimensional displays with liquid crystal on silicon spatial light modulator,” A. Michalkiewicz, M. Kujawinska, T. Kozacki, X. Wang, P. Bos, SPIE 5531, No. 1, 85-94, (2004).

“2-D liquid crystal optical, phased array,” X. Wang, B. Wang, P. Bos, J. Anderson, P. McManamon, 2004 IEEE Aerospace Conference Proceedings, Vol. 12, 6-13, (2004).

“Active microinterferometer with liquid crystal on silicon (LCOS) for extended range static and dynamic micromembrane measurement,” J. Kacperski, M. Kujawinska, X. Wang, P. Bos, SPIE 5532, No. 1, 37-43 (2004).

“Laser beam steering/shaping with LCoS 2-D OPA for free space optical communication,” X. Wang, B. Wang, P. McManamon, J. Pouch, F. Miranda, J. Anderson, P. Bos, SPIE 5403, No. 1, 782-791 (2004).

“The Effect of Layer Spacing Changes in the SmA Phase on Defects Observed in SSFLC Devices,” C. Wang., P. Bos, S. Kumar, M. Wand, M. Handschy, SID Asia Display/IMID’04 Digest Tech. Papers, 193 (2004).

“Study of switchable liquid crystal polymer grating by finite-different time-domain calculation,” B. Wang, X. Wang, P. Bos, SPIE Proc., 5213 104-110 (2004).

“The geometrical optics approach in liquid crystal cells with two- and three-dimensional director variations,” G. Panasyuk, J. Kelly, P. Bos, E. Gartland, D. Allender, SPIE Proc., 5289, 119-131 (2004).

“Limitation of liquid crystal on silicon spatial light modulator for holographic three-dimensional displays,” X. Wang, B. Wang, P. Bos, J. Anderson, M. Kujawinska, J. Pouch, F. Miranda, SID International Symposium Digest of Technical Papers, XXXV, Book II, 1522-1525, May (2004).

“Control of wavelength dispersion in form birefringent retarders for liquid crystal displays,” E. Montbach, P. Bos, SID International Symposium Digest of Technical Papers, XXXV, Book II, 1312-1315, May (2004).

“Poincare sphere analysis of LCOS E-O effects,” D. Chung, A. Grunnet-Jepsen, SID International Symposium Digest of Technical Papers, XXXV, Book II, 994-997 May (2004).

“Liquid crystal on silicon (lcos) wavefront corrector and beam steerer,” X. Wang, B. Wang, J. Pouch, F. Miranda, M. Fisch, J. Anderson, V. Sergan, P. Bos, SPIE Proc 5162 139-146 (2003).

“Eliminating layer undulation textures in SSFLC devices,” C. Wang, P. Bos, S. Kumar, M.Wand, M. Handschy, SID Intnl. Digest of Tech. Papers 34, 608-611 (2003).

“Design of switchable grating for color control element” B. Wang, P. Bos, SID Intnl. Digest of Tech. Papers 34, 700-703 (2003).

“2-D modeling of the effect of electrode topography and interpixel gap on LCOS devices,” Y. Zhang, P. Bos, D. Chung, SID Intnl. Digest of Tech. Papers 34, 1382 (2003).

“Warm-up of a pi-cell liquid crystal device,” G. Lee, P. Bos, S. Ahn, K-J Lee, Proceedings of the 1rst International Meeting of Information Display, Daegu Korea, 1096 (2003) (Invited).

“Diffraction efficiency of thin film holographic beam steering devices,” C. Titus, J. Pouch, H. Nguyen, F. Miranda, P. Bos, Proc. SPIE, 4825, 177-188 (2002).

“LCD optical light shutters for eye protection devices,” J. Pirs, S. Pirs, R. Petkovsek, M. Bazec, P. Bos, SID Conference Record of the International Display Research Conference, 589-593 (2002).

“Wide angle beam steering for infrared countermeasures applications,” J. Gibson, B. Duncan, P. Bos, V. Sergan, Proc. SPIE, 4723, 100-111 (2002).

“A defect free bistable C1 SSFLC display,” C. Wang, P. Bos, M. Wand, M. Handschy, SID Intnl. Digest Tech. Papers 33, 514-517 (2002).

“Modeling method for a single polarizer reflective STN-LCDs containing either a mirror or holographic slanted reflector,” E. Montbach, P. Bos, SID Intnl. Digest Tech. Papers 33, 874-877 (2002).

“A new type of liquid crystal diffractive light valve with very small pixel size,” B. Wang, P. Bos, D. Chung, SID Intnl. Digest Tech. Papers 33, 972-965 (2002).

“Modeling volume holograms using berreman 4*4 method,” E. Bramley, P. Bos, Proc. SPIE 4296, 282-291 (2001).

“Director field transitions in bistable twisted nematic devices,” B. Wang, J. Anderson, C. Hoke, P. Bos, IMID ’01 Digest, 54-57 (2001).

“Holographic color filters for reflective LCDs,” W. Gambogi, T. Felder, S. Mackara, P. Bos, D. Bryant, E. Bramley, Proc. SPIE 4 (2001).

“Considerations of the d/p Ratio in the design of a bistable twist nematic display,” B. Wang P. Bos, SID Intl. Digest Tech. Papers 32, 232-235 (2001).

“Numerical calculation using low azimuthal anchoring to achieve zigzag free SmC* state with a low pretilt angle,” C. Wang, R. Kurihara, P. Bos, S. Kobayashi, SID Intl. Digest Tech. Papers 32, 834-837 (2001).

“Optimization of reflective liquid crystal display with a holographic slanted reflector using the berreman 4?4 method,” E. Bramley, P. Bos, SID Intl. Digest Tech. Papers 32, 878-881 (2001).

“A color high brightness passive matrix display,” S. Saeed, P. Bos, Z. Li, SID Intl. Digest Tech. Papers 32, 1062-1065 (2001).

“Cholesteric color filter with polymer walls,” A. Tereshchenko, Y. Reznikov, A. Buluy, P. Bos, V. Sergan, Proc. 10th Intl. Display Research Conference, 249-252 (2000).

"A method of generating full color LCD using birefringent filters in a stacked design," S. Saeed, P. Bos, Z. Li, SID Digest XXXI, 830-833 (2000).

"Two crossed A-plates as an alternative to a negative C-plate," V. Sergan, P. Bos, G. Sharp, SID Digest XXXI, 838-841 (2000).

"Significant speed and stability increases in multi-dimensional director simulations," J. Anderson, C. Titus, P. Watson, P. Bos, SID Digest XXXI, 906-909 (2000).

"Lyotropic thin film polarizers," Y. Bobrov, C. Cobb, P. Lazarev, P. Bos, D. Bryant, H.Wonderly, SID Digest XXXI, 1102-1105 (2000).

"Status and trends in nematic bistable liquid crystal displays," P. Bos, P. Watson, J. Anderson, V. Sergan, C. Hoke, Proceedings of The 19th International Display Research Conference, 397 (1999). Invited

"Effects of pretilt angle on electro-optical properties of Pi-cell LCDs," X.-D. Mi, M. Xu, D.-K. Yang, P. Bos, SID Digest XXX, 24-27 (1999).

"Shortcomings of the Q tensor method for modeling liquid-crystal devices," J. Anderson, P. Watson, P. Bos, SID Digest XXX, 198-201 (1999).

"Two-dimensional optical simulation tool for use in microdisplay analysis," C. Titus, P. Bos, J. Kelly, SID Digest XXX, 624-627 (1999).

"Three-dimensional modeling of ridge-fringe-field LCDs," J. Anderson, P. Bos, C. Cai, A. Lien, SID Digest XXX, 628-631 (1999).

"The investigation of undertwist defect near the threshold in STN-LCDs," S. Li, P. Bos, SID Digest XXX, 640-643 (1999).

"Optimization of bend cells for field-sequential-color microdisplay applications," P. Watson, P. Bos, J. Gandhi, Y. Ji, M. Stefanov, SID Digest XXX, 994-997 (1999).

"Long time scale relaxation of the homeotropic to planar transition of short pitch cholesteric materials," P. Watson, V. Sergan, J. Anderson, J. Ruth, P. Bos, Proc. of the 18th International Display Research Conference, 291-294 (1998). Invited

"Reflective CMOS liquid crystal display design considerations," Y. Ji, M. Stefanov, W. Folks, P. Bos, Proc. of the 18th International Display Research Conference, 419-422 (1998).

"Amorphous silicon thin-film transistor active-matrix reflective cholesteric liquid crystal display," J. Nahm, T. Goda, B. Min, T. Chou, J. Kanicki, X. Huang, N. Miller, V. Sergan, P. Bos, J. Doane, Proc. of the 18th International Display Research Conference, 979-982 (1998).

“Cholesteric diffraction devices with a field-controlled grating vector,” S. Shiyanovskii, D. Subacius, D. Voloschenko, P. Bos, O. Lavrentovich, Proc. of the SPIE San Diego CA (1998).

"Defects in the ? cell with striped electrodes," H. Mori, E. Gartland, J. Kelly, P. Bos, Proc. 5th Intl. Display Workshop, 77-80 (1998).

"Modeling of polymer stabilized liquid crystals," C. Hoke, F. Xu, P. Bos, Proc. 5th Intl. Display Workshop, 101-104 (1998).

"A multi-dimensional alignment (MDA) structure and its application for the stabilization of the bistable twist cell," C. Hoke, P. Bos, Proc. 5th Intl. Display Workshop, 201-204 (1998). Invited

"Poincare sphere analysis on the optic Proc. Asia Display 98, pp. 419-422 (1998). al behavior of a discotic negative birefreince film," H. Mori, P. Bos, Proc. 5th Intl. Display Workshop, 243-246 (1998).

“Very high pretilt alignment and its application in Pi-cell LCDs,” M. Xu, D. Yang, P. Bos, X. Jin, F. Harris, S. Cheng, SID 98 Digest XXIX, 139-142 (1998).

“Optimum film compensation modes for TN and VA LCDs,” J. Chen, K. Kim, J. Jyu, J. Souk, J. Kelly, P. Bos, SID 98 Digest XXIX, 315-318 (1998).

“A fast frame-rate bistable cholesteric reflective display,” J. Anderson, P. Watson, J. Ruth, V. Sergan, P. Bos, SID 98 Digest XXIX, 806-809 (1998).

“Designing concepts of the discotic negative birefringence compensation films,” H. Mori, P. Bos, SID 98 Digest XXIX, 830-833 (1998).

“A bistable twist cell exhibiting long-term bistability suitable for page-sized displays,” C. Hoke, P. Bos, SID 98 Digest XXIX, 854-857 (1998).

“A study of the dynamics of reflection color, helical axis orientation, and domain size in cholesteric LCDs,” P. Watson, V. Sergan, J. Anderson, J. Ruth, P. Bos, SID 98 Digest XXIX, 905-908 (1998).

“Application of a negative birefringence film to various LCD modes,” H. Mori, P. Bos, IDRC, 17 M88 (1997). Invited

“An ultra wide viewing angle STN-LCD with a negative birefringence compensation film,” C. Hoke, H. Mori, P. Bos, IDRC, 17 21(1997).

“Reflective liquid crystal displays,” J. Ruth, R. Hewitt, P. Bos, Digest of the Flat Panel Display Strategic Forum and Technical Symposium. Invited

“The effect of material constants on the long term stability of the bistable twist cell,” C. Hoke, P. Bos, IDRC 17, 85 (1997).

“Electric field effects and defects in layered liquid crystals,” O. Lavrentovich, D. Subacius, P. Bos, S. Shiyanovskii, Proc. Fourth Intl Display Workshop, 29-32 (1997).

“Matrix addressing of a 0-360 degree bistable twist cell,” C. Hoke, J. Kelly, J. Li, P. Bos, Society for Information Display Digest of Technical Papers 28, 29 (1997).

“Brightness optimization of D-STN LCDs using the traveling wave compensator,” J. Anderson, J. Li, P. Bos, R. Culter, K. Kongslie, A. Gard, Society for Information Display Digest of Technical Papers 28, 671 (1997).

“Effects of surface topography on formation of zig-zag defects in SSFLC devices,” P. Watson, P. Bos, J. Pirs, Society for Information Display Digest of Technical Papers 28, 743 (1997).

“Efficient polarization-independent reflective liquid crystal phase gratings,” C. Titus, P. Bos, C. Holton, W. Glenn, Society for Information Display Digest of Technical Papers 28, 769 (1997).

“Optical simulation of electro-optical performance of low delta-nd mult-domain tn displays,” J. Chen, P. Bos, J. Kelly, N. Kim, S. Shin, Society for Information Display Digest of Technical Papers 28, 937 (1997).

“A four-domain twisted-nematic display stabilized by polymer networks,” J. Li, J. Chen, P. Bos, IDRC 16, 460 (1996).

“Four-domain TN-LCD fabricated by two alignment layers with low and high pretilt angle,” J. Chen, P. Bos, D. Johnson, J. Kelly, N. Kim, J. Crow, Society for Information Display Digest of Technical Papers 28, 650 (1997).

“Confirmation on mechanism of liquid crystal alignment by exposure to linearly polarized ultraviolet light,” J. Chen, D. Johnson, X. Wang, J. L. West, Society for Information Display Digest of Technical Papers 27, 634 (1996).

“Characterization of the helical-axes distribution in reflective cholesteric LCDs,” A. Kahn, X. Huang, S. Stefanov, P. Bos, D. Davis, B. Tahari, J. Ruth, Society for Information Display Digest of Technical Papers 27, 607 (1996).

“Polymer walls in higher-polymer-content bistable reflective cholesteric displays,” Y. Ji, J. Francl, W. Fritz, P. Bos, J. West, Society for Information Display Digest of Technical Papers 27, 611 (1996).

“A bistable LCD using polymer stabilization,” J. Li, C. Hoke, D. Fredley, P. Bos, Society for Information Display Digest of Technical Papers 27, 265 (1996).
“ Polymer stabilized ‘Up-Down’ bistable devices, J. Li, C. Hoke, P. Bos, IDRC 16, p--- (1996) Invited

“Optimization of OMI displays using polymer stabilization,” J. Li, J. Kelly, C. Hoke, P. Bos, IDRC 15, 252(1995).

“An optically active diffractive device for a high-efficiency light valve,” P. Bos, J. Chen, J. W. Doane, B. Smith, C. Holton, W. Glenn. (J) Society for Information Display Digest of Technical Papers, 26, 601 (1995).

“A well controlled tilted homeotropic alignment method and a vertically aligned four domain LCD fabricated by this technique,” H. Vithana, Y. Fung, S. Jamal, R. Herke, P. Bos, D. Johnson. (J) Society for Information Display Digest of Technical Papers, 26, 873 (1995).

“Four domain TN-LCD fabricated by reverse rubbing or double evaporation,” J. Chen, P. Bos, D. Bryant, D. Johnson, S. Jamal, J. Kelly, Society for Information Display Digest of Technical Papers, 26, 865 (1995). (J)

“Viewing angle and color uniformity optimization of the pi cell,” M. Flynn, P. Bos, Society for Information Display Digest of Technical Papers, 26, 801 (1995). (J)

“Wide viewing angle liquid crystal electro-optical effects for AMLCDs,” P. Bos, J. Chen, H. Vithana, D. Johnson, Asia Display, IDW ‘95, Proceedings of the 2nd international display workshops, Vol. 2, AL-7, 27(1995). Invited.

“Investigation of the mechanism of the surface induced alignment of liquid crystals by linearly polymerized photopolymers,” J. Chen, B. Cull, P. Bos, D. Johnson, M. Schadt., Society for Information Display Digest of Technical Papers, 26, 528 (1995). (J)

“Dynamic drive for bistable reflective cholesteric displays: a rapid addressing scheme,” X. Huang, D. Yang, P. Bos, J. Doane, Society for Information Display Digest of Technical Papers, 26, (1995). (J)

“Passive optical phase retarders for liquid crystal displays,” (Invited lecture) P. Bos., IDRC 14, 118 (1994). Invited

“Polymer stabilized SBE devices,” D. Fredley, B. Quinn, P. Bos, IDRC 14, 480 (1994). (J)

“A synchronously strobed backlight for improved video-rate STN performance,” K. Kongslie, R. Culter, P. Bos, SID International Symposium Digest of Technical Papers 25 155 (1994). (J)

“The traveling wave compensator: a new method for high contrast video-rate passive matrix displays,” R. Culter, K. Kongslie, P. Bos, Society for Information Display Digest of Technical Papers, 25, 159 (1994). (J)

“A low threshold voltage polymer network TN device,” P. Bos, J. Rahman, J. Doane, SID Digest of Technical Papers, 24, 877 (1993). (J)

“An optically "self-compensating" electro-optical effect with wide angle of view,” P. Bos, J. Rahman, SID Digest of Technical Papers, 24, 273 (1993), (J)

“An enhanced chevron ferroelectric SSFLC display,” P. Bos, IDRC 12, 523 (1992). (J)

“High performance 3D viewing systems using passive glasses,” P. Bos, T. Haven, SID Digest of Technical Papers 450 (1988). (J)

“A unique active contrast-enhancement filter using liquid-crystal pi-cell technology,” K. Koehler/Beran, P. Bos, SID Digest of Technical Papers, 17, 436 (1986). (J)

“A full-color field-sequential color display,” P. Bos, T. Buzak, R.Vatne, IDRC, 4, 7 (1984).

“Design considerations for the pi-cell, a fast electro-optical switch,” P. Bos, K. Koelher/Beran, P. Johnson, IDRC 3 — (1983). (J)

“A LC/CRT field-sequential color display,” R. Vatne, P. Johnson, P. Bos, Society for Information Display Digest of Technical Papers, 14, 28 (1983). (J)

“A liquid crystal optical switching device (? - cell ),” P. Bos, P. Johnson, R. Kohler/Beran, Society for Information Display Digest of Technical Papers, 14, 30 (1983).

Presentations (without published text)

“ The effect of layer spacing changes in the sma phase on defects observed in SSFLC devices,” C. Wang, P. Bos, S. Kumar, M. Wand, M. Handschy, SID Asia Display/IMID’04, Daegu, Korea, August 23-27 (2004).

“Spatial resolution limitation of liquid crystal spatial light modulator,” X. Wang, B. Wang, P. McManamon, J. Pouch, F. Miranda, J. Anderson, P. Bos, SPIE Annual Meeting, Denver Colorado, August 2-4 (2004).

“Switchable optical phased prism arrays for beam steering,” J. Shi, P. Bos, B. Winker, P. McManamon, SPIE Annual Meeting, Denver, Colorado, August 2-4 (2004).

“2-D liquid crystal optical phased array,” X. Wang, B. Wang, P. Bos, J. Anderson, P. McManamon, 2004 IEEE Aerospace Conference, Big Sky, Montana, March 6-13 (2004).

“Holographic three-dimensional displays with liquid crystal on silicon spatial light modulator,” A. Michalkiewicz, M. Kujawinska, T. Kozacki, X. Wang, P. Bos, SPIE Annual Meeting, Denver, Colorado, August 2-4, (2004).

“Active microinterferometer with liquid crystal on silicon (LCOS) for extended range static and dynamic micromembrane measurement,” J. Kacperski, M. Kujawinska, X. Wang, P. Bos, SPIE Annual Meeting, Denver, Colorado, August 2-4 (2004).

“Laser beam steering/shaping with LCoS 2-D OPA for free space optical communication,” X. Wang, B. Wang, P. McManamon, J. Pouch, F. Miranda, J. Anderson, P. Bos, SPIE Conference on Sensors Command, Control, and Intelligence, Orlando, FL, April 12 (2004).

“Reflective polarization independent LC phase modulator with polymer wall,” Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, SID Intl. Symp. Digest Tech Papers XXXVI, 1178 (2005).

“Fast VAN LCoS microdisplay” J. Anderson, C. Cheng, P. Bos, SID Intl. Symp., Boston, MA, May 24-26, (2005).

“Two-dimensional dynamic modeling of splay to bend transition in pi cell or BTN device at high voltage,” Y. Zhang, B. Wang, D. Chung, J. Colegrove, P. Bos, SID Intl. Symp., Boston, MA, May 24-26 (2005).

“Light propagation in two dimensional liquid crystal devices with periodic structures near the wavelength of light,” B. Wang , P. Bos, 20th International Liquid Crystal Conference Ljubljana, Slovenia, July 4 – 9 (2004).

“ A fast Q-tensor method for modeling the dynamics of defects in a liquid crystal director field,” P. Bos, G. Lee, S. Ahn, K. Kim, 20th International Liquid Crystal Conference, Ljubljana, Slovenia, July 4 – 9 (2004).

“Temperature dependence of the smectic-a layer spacing and its effect on layer defects in the SmC* phase,” C.Wang, P. Bos, S. Kumar, M. Wand, M. Handschy, Tohoku University 21st Century COE Program, Sendai, Japan, Jan 28-30 (2004). Invited

“The electric field induced splay to bend transition in a cell with patterned electrodes,” G. Lee, P. Bos, Gordon Research Conference on Liquid Crystals Colby-Sawyer College, June 15-20 (2003).

“Fast switching polymer stabilized splay cell (PSSC),” V. Sergan, X. Wang, P. Bos, G. Sharp, 19th International Liquid Crystal Conference, Edinburgh Scotland, June 30-July 5 (2002).

“Light propagation in liquid crystalline blazed gratings,” C. Titus, B. Wang, J. Shi, P. Bos, 19th International Liquid Crystal Conference, Edinburgh, Scotland, June 30-July 5 (2002).

“Diffraction efficiency of thin film holographic beam steering devices,” C. Titus, J. Pouch, H. Nguyen, F. Miranda, P. Bos, Annual meeting of the International Society for Optical Engineering, Seattle, Washington, July 8-9 (2002).

“LCD optical light shutters for eye protection devices,” J. Pirs, S. Pirs, R. Petkovsek, M. Bazec, P. Bos, 2002 International Display Research Conference, Nice, France, October 1-4 (2002).

“Liquid crystal modes for wide viewing angle,” Applications Tutorial, SID, Boston, MA, May 21-23 (2002).

“Modeling method for a single polarizer reflective STN-LCDs containing either a mirror or holographic slanted reflector,” SID, Boston, MA, May 21-23 (2002).

“A new type of liquid crystal diffractive light valve with a very small pixel size,” SID, Boston, MA, May 21-23 (2002).

"Liquid-crystal modes for AMLCDs," P. Bos, SID Applications Seminar, (2000), The Application and Evaluation of Information Displays, (2000). Invited.

"Nematic bistable liquid crystal displays," P. Bos, J. Doane, Presented at the Association of Super-Advanced Electronic Technologies International Forum on Low Power Displays Tokyo, Japan, July 21 (2000). Invited.

“Applications of liquid crystals” 1.5 day seminar, Kodak Inc., Rochester NY Aug 21-22, 2000. Invited

“Bistable displays” Seminar, Canon Inc. Atsugi, Japan July 22 (2000). Invited.

"Defect free C1 alignment," P. Bos, C. Wang, P. Watson, Liquid Crystal Alignment Workshop, University of Colorado: Boulder, Colorado (May 22, 2000), Invited.

"Fast switching electrically controlled birefringence liquid crystal devices," V. Sergan, P. Bos, G. Sharp, Oral Presentation at the 18th International Liquid Crystal Conference (July 24-28, 2000), Sendai, Japan.

"Computer simulation of the homeotropic to focal conic transition in cholesterics," J. Anderson, P. Watson, T. Ernst, P. Bos, presented at the 18th International Liquid Crystal Conference (July 24-28, 2000), Sendai, Japan.

"Influence of the polymer network on the switching threshold voltage in the polymer stabilized ferroelectric liquid crystals," J. Pirs, P. Bos, S. Zumer, R. Petkovsek, T. Matuszceyk, presented at the 18th International Liquid Crystal Conference (July 24-28, 2000), Sendai, Japan.

"The Helfrich initiated transient planar to equilibrium planar transition in cholesteric liquid crystals," P. Watson, J. Anderson, V. Sergan, P. Bos, Oral Presentation at the 18th International Liquid Crystal Conference (July 24-28, 2000), Sendai, Japan.

"Liquid crystal agile beam steering," B. Winker, D. Gu, P. Bos, O. Lavrentovich, M. O'Callaghan, N. Clark, ALCOM Symposium, ALCOM Symposium, Invited Talk.

“Efficient, accurate liquid crystal digital light deflector,” C. Titus, P. Bos, O. Lavrentovich, Proc. of SPIE, 3633, 244-253 (1999).

"Emerging liquid-crystal technologies," P. Bos, SID Seminar Lecture Notes, Vol. I, Sem. M9 (1999). Invited.

"Nematic LCD modes and applications," P. Bos, SID Applications Seminar, Seminar A-2 (1999). Invited.

“The effect of pretilt and surface topography on defects in SmC* liquid crystal devices” 19 Nov, 1999 Invited Seminar, Science University of Tokyo ( Tokyo campus ) Invited

“The bistable twisted nematic device, an alternative to SmC* devices?" 22 Nov. 1999 Invited Seminar, Science University of Tokyo (Yamaguchi campus). Invited

"Bistable nematic liquid crystal displays," Invited Seminar, Toyama University: Toyama, Japan (December, 1998).Invited

"Electrically controlled liquid crystalline diffraction gratins," D. Subacius, D. Voloschenko, S. Shiyanovskii, P. Bos, O. Lavrentovich, 17th International Liquid Crystal Conference, Strasbourg, France, July 19-24, 1998. P2-169.

"Mechanism of relaxation from electric field induced homeotropic to planar texture in cholesteric liquid crystals," V. Sergan, J. Anderson, P. Watson, J. Ruth, P. Bos, 17th ILCC. P4-117.

“Diffractive cholesteric grating,” D. Subacius, P. Bos, O. Lavrentovich, American Physical Society, St. Louis, March 1998.

“Patterned alignment, liquid crystal diffractive spatial light modulators & devices,” C. Holton, P. Bos, M. Miller, W. Glenn, SPIE, San Jose CA, Jan. 1998.

“Diffractive cholesteric gratings,” D. Subacius, P. Bos, O. Lavrentovich, APS March Meeting Abstracts, 598 code N7-10.

“ The effect of polymer networks on the electro-distortional characteristics of nematic liquid crystals,” J. Li, J. Anderson, C. Hoke, T. Nose, P. Bos, 16th ILCC, C1P52(1996).

“The effect of material parameters on the hysteresis of bistable STN displays,” J. Li, C. Hoke, P. Bos, 16th ILCC, B1P54(1996).

“Twisted Nematic Displays,” P. Bos, Liquid Crystal Applications Short-Course at 16th ILCC. Invited.

“Dielectric study of transitions between cholesteric textures and design of dynamic drive scheme,” X. Huang, D. Yang, P. Bos, J. Doane, 16th ILCC, B1P.46 (1996).

“Mechanism of liquid crystal alignment on polymer films exposed to linearly polarized ultraviolet light,” J. Chen, D. Johnson, P. Bos, X. Wang, J. West, 16 ILCC, B4P.14.

“Polyimide thickness induced alignment transition in cholesteric displays,” J. Ruth, P. Bos, D. Davis, B. Taheri, A. Ali, A. Kahn, X. Huang, M. Stefanov, 16th ILCC, C1P.49.

“An observation of the effect of the surface topography on the defect density in SmC* devices,” J. Pirs, S. Kralj, S, Pirs, B. Marin, P. Watson, C. Hoke, P. Bos, 16th ILCC, D1P.29.

“Investigation of domain instability in the four-domain twisted nematic configuration,” J. Chen, J. Li, D. Johnson, P. Bos, N. Kim, 16th ILCC, D2P29(1996).

“High ambient reflective displays for transport applications,” B. Taheri, J. Ruth, P. Bos, M. Stefanov, A. Kahn, J. Doane, 1996 Symposium on Vehicular Displays, Ypsilanti, Sept 17, 1996 (I).

“Liquid crystal alignment,” P. Bos, Workshop on Liquid Crystals on Silicon at NSF/ERC for Optoelectronic Computing Systems at the University of Colorado at Boulder, June 26 - 29 1995 Invited.

“Polymer-modified TN and supertwisted nematic (STN) devices,” P. Bos, J. Li, D. Yang, W. Doane, Proc. SPIE v2408, 74 (1995).

“Zero-field bistable reflective cholesteric displays,” P. Bos, D. Yang, M. Pfeiffer, J. Doane VDE Conference on Vacuum Electronics and Displays, Garmisch, Germany, 219, May 1995. Invited.

“Polymer stabilized liquid crystal materials,” (invited paper) P. Bos, J. Li, D. Yang, J. Doane, IS&T / SPIE Symposium on Electronic Imaging: Science & Technology (2408-10) (1994). Invited.

“Contrast and color uniformity optimization of and LCD Pi-Cell pixel,” M. Flynn, P. Bos (J), 15th International Liquid Crystal Conference (1994).

“Polymer stabilized TN displays,” P. Bos, J. Rahmon, J. Doane, 1993 Gordon Conference on Liquid Crystals. Invited.

“Performance limits of stereoscopic viewing systems using active and passive glasses,” P. Bos, IEEE Annual Virtual Reality Symposium 1993, 371-376.

“Time sequential stereoscopic displays: the contribution of phosphor persistence to the “Ghost” image intensity,” P.J. Bos, Proceedings of the 1991 annual conference of the Institute of Television Engineers of Japan, 603. Invited

“Stereoscopic display performance,” 1990 Electronic Imaging Conference.

“Liquid crystals: fundamental properties and applications,” J. West, P. Bos, P. Palffy/Muhoray, D. Allender, Tutorial Short Course T75; SPIE OE/LASE'89; Los Angeles Ca.; 1989. Invited.

“Director alignment methods for ferroelectric liquid crystal matrix displays,” (Invited Paper), P. Bos, Optical Society of America 1988 Annual Meeting Santa Clara, Ca., 1988. Invited

“A method for director alignment of SmC* devices,” P. Bos, K. Koehler/Beran (J), 1st International Symposium on Ferroelectric Liquid Crystals, Arcachon, France, 1987.

“The prospects for color flat-panel displays,” P. Bos (Evening Discussion Panel); SID International Symposium, Orlando, Fl., 1985. Invited

“The pi-cell: a fast liquid crystal optical switching device,” P. Bos, 4th European Winter Conference on Liquid Crystals of Low-Dimensional Order and their Applications, Bovec, Yugoslavia, 1984. Invited.

“Removal of the optical bounce and turn-off time reduction in twisted nematic displays,” R. Hubbard, P. Bos (J), Biennial Display Research Conference, Cherry Hill, N.J., 1980.

“Motional averaging of single spin interactions in liquid crystals,” Bull.Am.Phys. Soc. 22, 1269 (1977).

Issued Patents

“Liquid crystal on silicon diffractive light valve,” B. Wang, P. Bos, D. Chung, US Patent 6,924,870, issued August 2, 2005.

“Bistable liquid crystal display device using polymer stabilization,” US Patent 6,583,838, issued June 24, 2003.

“Bistable reflective cholesteric liquid crystal displays utilizing super twisted nematic driver chips,” J. Ruth, R. Hewitt, P. Bos, US Patent 6,278,429, issued August 21, 2001.

“Four domain pixel for liquid crystalline light modulating device,” P. Bos, H. Vithana, D. Johnson, J. Chen, US Patent 6,141,074, issued Oct. 31, 2000.

“Bistable liquid crystal display device using polymer stabilization,” J. Li, P. Bos, US Patent 6,133,975, issued Oct. 17, 2000.

"Reflective optically active diffractive device," P. Bos, J. Chen, D. Johnson, W. Glenn, C. Holton, B. Smith, U.S. Patent 5,825,448, issued Oct. 20, 1998.

"Polymer stabilized four domain twisted nematic liquid crystal display," P. Bos, J. Chen, U.S. Patent 5,831,700, issued Nov. 3, 1998.

“Switchable color filter using electrically controllable optical retarders,” P. Bos, P. Johnson, Jr., US Patent 5,714,970, issued Feb. 3, 1998.

“Method for forming uniformly spaced plastic sybstrates liquid crystal displays,” J.West, P.J Bos, US Patent 5,766,694, issued June 16, 1998.

“Dynamic drive method and apparatus for a bistable liquid crystal display,” X. Huang, P. Bos, D. Yang, US Patent 5,748,277, issued May 5, 1998.

“Optically active diffractive device,” P. Bos, B. Smith, C. Holton, W. Glenn, US Patent 5,638,201, issued June 10, 1997.

“Low electro-optic threshold liquid crystal cell and method of fabricating same,” P. Bos, J. A. Rahman, US Patent 5,606,442, issued February 25, 1997.

“Color liquid crystal display having a wide angle of viewing angle,” P. Bos, US Patent 5,550,662, issued August 27, 1996.

“Gray scale LC device having a wide viewing angle,” P. Bos, US Patent 5,410,422, issued April 25, 1995.

“Switchable color filter and field sequential full color display system,” P. Bos, P. Johnson Jr., US Patent 5,387,920, issued February 7, 1995.

“High contrast light shutter system,” P. Bos, US Patent 5,187,603, issued February 16, 1993.

“Liquid crystal fiber optic attenuator,” S. Rumbaugh, M. Jones, F. Scheu, P. Bos, US Patent 5,015,057, issued May 14, 1991.

“Polarization controller for use in optical fiber communications,” S. Rumbaugh, M. Jones, P. Bos, US Patent 4,979,235, , issued December 18, 1990.

“Chiral liquid crystal cell,” P. Bos, US Patent 4,900,132, issued February 13, 1990.

“Drive waveform for ferroelectric displays,” P. Bos, US Patent 4,870,398, issued September 26, 1989.

“Stereoscopic imaging system with passive viewing apparatus” P. Bos, US Patent 4,719,507,
issued January 12, 1988.

“Method and apparatus for reducing optical cross talk in a liquid crystal optical switch” P. Bos, D. Prince, US patent 4,652,087, issued March 24, 1987.

“High speed electro-optical light gate and field sequential full color display system incorporating same,” P. Bos US patent 4,635,051, issued January 1, 1987.

“Field sequential color display system,” P. Bos, P. Johnson Jr., US Patent 4,582,396, issued April 15, 1986.

“Rapid starting high-speed liquid crystal variable optical retarder,” P. Bos, US Patent 4,566,758.

Research Areas
  • Novel liquid crystal devices and applications
Affiliations


Employment

2001-present Professor, Chemical Physics Program

Liquid Crystal Institute, Kent State University

1997-present Associate Director ; Liquid Crystal Institute, Kent State University

1995- 2001 Associate Professor, Chemical Physics Program
Liquid Crystal Institute, Kent State University

7/95 - 9/95 Interim Director, Liquid Crystal Institute

1994-1995 Senior Research Fellow, Liquid Crystal Institute
Kent State University

1984-1993 Principal Scientist, Display Research Dept.
Tektronix Laboratories, Tektronix Inc.

1981-1984 Senior Scientist, Display Research Dept.
Tektronix Laboratories, Tektronix Inc.

1979-1981 Scientist, Display Research Dept.
Tektronix Laboratories, Tektronix Inc.

1978-1979 Postdoctoral Fellow, Liquid Crystal Institute, Kent State University

Educational Activities

Course Development and Teaching

Developed Graduate level course “ Liquid Crystal Displays” . Course has been offered annually since 1995.

Co-developed continuing education course “Liquid Crystals: Materials and Display Devices”. Course has been offered annually since about 1993

Graduate Students:

Chad Hoke 1995-1999 Ph.D. (to Hewlett Packard Laboratories)
Asad Kahn 1995-1995 M.S ( to Kent Display Systems)
Jim Anderson 1995 2002 PhD ( to Hana Microdisplays Inc.)
Philip Watson 1996- 2000 Ph.D ( to 3M Optical Devices Div)
Hiroyuki Mori 1996-1999 Ph.D ( to Fuji Photo Film )
Chuck Titus 1997- 2000 PhD ( independent consultant)
Mike Alimov 1998-1999 M.S ( to S-Vision)
Shuxin Li 1998-1999 M.S. ( to Densitron)
Salman Saeed 1998-2002 Ph.D ( to 3-5 Systems)
Bin Wang 1999-2001 PhD ( to Agilent)
Erica Bramley 2000-2003 PhD ( to Kodak)
Chenhui Wang 2000-2003 PhD ( to ChemImage)
Jianru Shi- 2001-2005 PhD ( Post – Doc )
Xinghua Wang 2002-2005 PhD ( to ChemImage)
Yanli Zhang 2002-2005 PhD ( to Intel )
Cheng Chen 2003-
Yong-Kyu Jang 2005-
Mitya Reznikov 2005-

Post Docs:

Mark Flynn 1994 (to Kaiser Electronics)
Dave Fredley 1994 - 1995 ( to Motorola)
Jon Ruth 1994 -2003 ( to Alpha-Micron)
Jianlin Li 1995-1996 (to Polytronix)
Jianmin Chen 1995-1996 ( to Samsung)
Jianfung Li 1996-1997 (to Reveo)
Ray Folks 1995-1996
Vasa Sergan 1996 –2002 (California State University, Sacremento
George Barrick 2002-2003 ( to CWRU)
Gi-Dong Li 2001-2003 ( to Pusan University)
Mike Fisch 2002-2003 ( to NEOBeam)
Bin Wang 2003-2006 ( to Eastman Chemical)
Bentley Wall 2005-


Visiting Scientists:

Janez Pirs annually (Inst. of Joseph Stephan, Slovenia)
H. Wilderbeek 1999 (Eindhoven University of Technology)
D.L.Seekola 1999 (University of Pretoria)
Prof. H. Okada 3/96 - 8/96 (Toyama Univ)
Prof. T. Nose 3/96 - 8/96 (Akita Univ)
N-D Kim 9/95 - 8/96 (Samsung)
Hiroyuki Mori 9/96 – 9/99 (Fugi-Film)
Jianmin Chen 1997 (Samsung)
J.J. Lyu 1997 (Samsung)
Byung-Seob Ban 2005 (Samsung)
Andriy Nych 2006

Professional Society Activities

General Chair, 26th International Display Research Conference; Kent , Ohio ( 2006)

Member, Scientific Committee, 21st International Liquid Crystal Conference, Keystone Co, (2006)

Member program committee for the Society for Information Display annual conference. and session chairman 1993? – 2006

Member Scientific Committee, 19th International Liquid Crystal Conference, Edinburgh (2002)

General Chair: 20th International Display Research Conference, Palm Beach Florida ( 2000)

Oversees Advisor, 6- 12th International Display Workshops, Japan (1999-2005);

Member Scientific Committee, and session chair: 18th International Liquid Crystal Conference, Sendai Japan ( 2000)

Session chair 19th International Display Research Conference, Berlin Germany (1999)

Oversees Advisor and session chair; 5th International Display Workshop, Kobe, Japan (1998)

Session chair at 1998 International Liquid Crystal Conference Ferroelectric Devices Session

Program Chair for 1997 International Display Research Conference, Toronto

Liquid Crystal Technology sub-committee chair , 1996 SID International Symposium.

NSF Engineering Research Center Site review team for Opto-electronic Comuputing Systems Center at Univ. of Colorado (Feb 15, 1996)

Session co-chiar , 1996 International Displays Research Conference (Euro-display). Birmingham.

Session co- Chair at the Workshop on Advanced Liquid Crystal Display (at Asia Display'85) Hamamatsu Oct 19,1995.

Program Committee member and Session chair at the 1994 International Display Research Conference, Monterey.

Past member, Society for Information Display Academic Committee.

Past Member, Editorial Board of Liquid Crystals

Philip Bos
OFFICE
Department of Chemical Physics
Liquid Crystal Institute
CONTACT INFO
Phone: 330-672-2511
Fax: 330-672-2796
pbos@kent.edu
EXPERTISE