List of Granted Patents

1. H S Kwok, J.A. Copley and Y. Domankevitz, Method and device for stand off laser drilling and cutting, U.S. Patent Number 4,870,244 (Sept 1988).
2. S. Witanachchi, H S Kwok and D T Shaw, Plasma assisted laser deposition process, U.S. Patent Number 4,874,741 (Oct 1989).
3. H S Kwok and Y Liao, Reflective active matrix liquid crystal display on silicon integrated circuits, Taiwanese Patent No. 83110246, (1996).
4. H S Kwok and Y Liao, Liquid crystal display, UK patent number GB 2,886,059B, (1997).
5. H S Kwok and F H Yu, Liquid crystal display having a single polarizer and no retardation film compensation, US Patent Number 5,926,245 (Jul 1999).
6. H S Kwok and Y Liao, Electro-optic display providing a grayscale by utilizing voltage dependent birefringence, US Patent Number 5,999,152 (Dec 1999).
7. H S Kwok and S T Tang, Method and apparatus for measuring liquid crystal cell properties, US Patent 6,081,337 (Jun 2000).
8. H S Kwok and S T Tang, Single polarized LCD consisting of particular twist angle and thickness-birefringence product, US patent number 6,091,477 (Jul 2000).
9. H S Kwok, Reflective active matrix liquid crystal displays with mixed twisted nematic and birefringent modes, US Patent Number 6,341,001 (Jan 2002).
10. H S Kwok and H F Li, New polarizing beam splitter, US Patent 6,462,873 (October 2002).
11. W C Yip, E Prudnikova, H S Kwok, V G Chigrinov, V M Kozenkov, H Takada and M Fukuda, Manufacturing methods of Photoalignment layer, Korean Patent KR2001-72550, Taiwanese Patent TW90129114, Chinese Patent CN01140064.1, Singapore Patent SG200107212-3, European Patent EP01119765.
12. H S Kwok, C Yeoh and Y Liao, Liquid crystal display with non-specular reflector, US Patent No. 6,532,051 (March 2003).
13. H S Kwok and X Liu, Optical assembly for reflective light valves, US Patent No. 6,561,652 (May 2003).
14. W C Yip, E K Prudnikova, H S Kwok, V G Chigrinov, V M Kozenkov, H Takada and M Fukuda, Method of Manufacturing Photoalignment Layer, US Patent No. 6,582,776 (June 2003).
15. W C Yip, H Takada, M Fukuda, V G Chigrinov, V M Kozenkov, E Prudnikova, H S Kwok, Method of manufacturing a photo-alignment layer, European Patent No. EP1209515B1 (Sept 2003).
16. H S Kwok and S T Tang, Method and Apparatus for Measurement of Liquid Crystal Cell Parameters, US Patent No. 6,633,358 (October 2003).
17. H S Kwok and C Chigrinov, A Mixture for Liquid Crystal Alignment Film, A Liquid Crystal Alignment Film, and A Manufacturing Method of a Liquid Crystal Alignment Film. Japanese Patent No J5311535, 2003.
18. H S Kwok and S T Tang, Bistable twisted nematic liquid crystal displays, US Patent No. 6,707,527 (March 2004).
19. H S Kwok and J X Guo, Optically optimized permanently bistable twisted nematic liquid crystal displays, US Patent No. 6,784,955B2, (August 2004).
20.郭海成，扭轉向列與雙折射模式混合的反射式有源矩陣顯示器的製造方法，Chinese patent number ZL 99122842.1, August 2004.
21. H S Kwok and H C Huang, Optical systems for liquid crystal displays projector, US Patent No. 6,793,344 B2, (September 2004).
22. H S Kwok, S T Tang, K M Fung, Reflective liquid crystal displays having multilayer rear substrates, US Patent No. 6,801,280 (October 2004).
23.葉永超;葉連娜•K•普羅特尼科娃;郭海成;弗拉基米爾•G•西爾格利諾夫;弗拉基米爾•M•柯曾科夫;高田宏和;福田昌宣，光取向膜的製備方法，Chinese patent ZL01140064.1，July 2005.
24.郭海成;葉永超;弗拉迪米爾•奇格里諾夫;弗拉迪米爾•科津科夫，經光成象的光偏振膜，Chinese patent ZL 00130340.6，October 2005.
25. H S Kwok and X J Yu, Color Vertically Aligned Liquid Crystal Displays, US Patent 6,919,947 (July 2005).
26. M Wong, H S Kwok, Z G Meng and M X Wang, Polycrystalline material and semiconductor devices formed therefrom, US Patent 6,953,716 B2 (Oct 2005).
27. H S Kwok, W C Yip, V Kozenkov and V G Chigrinov, Method of fabricating thin film polarizers, Chinese Patent Number 232520, October 2005.
28.郭海成，劉旭，用於全色圖像顯示器的投影系統，Chinese patent number ZL 99814945.4, September 2005.
29. Tang; Ben Zhong Lam; Wing Yip Kong; Xiangxing Kwok; Hoi Sing Acetylene polymers and their use as liquid crystals, US Patent 7,070,712 (Jul 2006).
30. W C Yip, E K Prudnikova, H S Kwok, V G Chigrinov, V M Kozenkov, H Takada and M Fukuda, Method of Manufacturing Photoalignment Layer, Japanese Patent No. 3883848 (Nov 2006).
31. V M Kozenkov, W C Yip, V G Chigrinov, E Prudnikova and H S Kwok, Photoinduced Dichroic Polarizers and Fabrication Methods Thereof, US Patent 7,070,913 B2 (July 2006).
32. H S Kwok, Projector with Flat Light Source, US Patent 7,133,211 B2 (Nov 2006).
33. H S Kwok and X J Yu, Color Twisted Nematic Liquid Crystal Displays, US Patent Number 7,236,219. June 26, 2007.
34.郭海成;黃河楫，採用在矽板液晶微顯示LCOS上集成彩色濾波片的光學投影系統，Chinese patent number ZL 200510102670.5, October 2008。
35. H S Kwok and S T Tang,用於測量液晶單元參數的方法和裝置, Chinese Patent Number ZL 01102121.7, April 2008.
36. H S Kwok, W.C. Yip, V Chigrinov, V. Kozenkov, Photo-patterned light polarizing films, US Patent Number 7,381,502B2, June 2008.
37. Z G Meng, M Wong and H S Kwok, Method of annealing polycrystalline silicon using solid-state laser and devices built thereon, US Patent number 7,381,600, June 2008.
38.宋義，郭海成，高效平面光源，Chinese Patent Number ZL 200410039145.9, June 2008.
39. Kwok; Hoi Sing; Wong; Man; Peng; Hua-Jun; Xie; Shuang, Anode for organic light emitting diode, US Patent Number 7,402,947B2, July 2008.
40. H S Kwok, F S Yeung, F C Xie, O Tsui and P Sheng,一種液晶取向層及其製作方法， Chinese Patent Number ZL 200480043132.7, December 2008.
41.郭海成，于興傑，彩色扭曲向列液晶顯示器，Chinese patent ZL 200410048725.4, January 2009.
42.郭海成，于興傑，垂直配向彩色液晶顯示器，Chinese patent ZL 2004100479296, March 2009.
43. H S Kwok, Fion Yeung, F C Xie, Ophelia Tsui and P Sheng, A liquid crystal alignment layer and methods of making thereof, Hong Kong patent number HK1102337, May 2009.
44. H S Kwok, Fion Yeung and Y W Li, Bistable twisted nematic liquid crystal display based on dual frequency operation, US Patent Number 7,551,252B2, July 2009.
45. H S Kwok and X J Yu, Bistable liquid crystal device, US Patent Number 7,557,884B2, July 2009.
46. H S Kwok and F S Yeung,一種改善的聚亞醯胺單元液晶顯示器, Chinese patent number ZL200480043861.2, July 2009.
47.郭海成，葉永超，奇格裡洛夫，科津科夫；形成光偏振膜的方法，Chinese patent number ZL200510097822.7, August 2009.
48. H S Kwok, W Y Wong, X M Yu and G J Zhou, Diarylaminoflurine-based Organometallic Phosphors and Organic Light Emitting Devices Made from Such Compounds, US Patent 7,652,136B2, January 2010.
49. H Kondo, Y Kuwana, H Takada, V Chigrinov and H S Kwok, Azo Compound, Composition for Photoalignment Film Using the Same, and Method for Producing Photoalignment Film, Chinese Patent Number ZL200580021566.1, Jan 2010.
50.郭海成，適用于有機發光二極體顯示器的多晶矽薄膜圖元電極，Chinese Patent Number ZL 200610139874.0,
51.孟志國，王文，郭海成，一種透反式液晶器件及其製造方法，Chinese Patent Number ZL 200580049823.2, February 2010.
52.郭海成，發光的金（III）化合物，其製備和含有它們的發光裝置，Chinese Patent Number ZL 200580036932.0,
53.郭海成，使用固體雷射器退火的多晶矽薄膜製備半導體器件的方法，Chinese Patent Number ZL 200610139877.4,
54.郭海成，偶氮化合物，使用了其的光取向膜用組合物以及光取向膜的製造方法，Chinese Patent Number ZL 200580021566.2,
55.郭海成，非晶矽的金屬誘導結晶和金屬吸除技術，Chinese Patent Number ZL 200610139876.X,
56.郭海成，非晶矽金屬誘導晶化方法，Chinese Patent Number ZL 200710086301.0
57. H S Kwok, W C Yip, V G Chigrinov and V Kozenkov, Method of forming light polarization film, Hong Kong Patent Number 1091553B, April 2010.
58. H S Kwok, M Wong, Z G Meng, S Y Zhao, C Y Wu, Metal Induced Crystallization of Amorphous Silicon in Thin Film Transistors, US Patent Number 7,790,580, September 2010.
59.王文，郭海成，孟志國，多晶矽薄膜的製備方法，用該方法制備的多晶矽和薄膜電晶體，Chinese Patent Number ZL 200610139877.4, Sept 2010.
60. H S Kwok, M Wong, Z G Meng, S Y Zhao, C Y Wu, Method of forming polycrystalline silicon thin film, and thin film transistor formed by the method, Hong Kong patent HK1105483, May 2011.
61. H S Kwok, M Wong, Z G Meng, J X Sun and X L Zhu, Polycrystalline silicon as an electrode for light emitting diodes and method of making the same, US patent number 7,923,911B2, April 2011.
62. H S Kwok, F S Yeung, F C Xie, O K Tsui and P Sheng, Liquid crystal alignment layer and method of making thereof, US patent number 7,968,158B2, June 2011.
63. Z G Meng, M Wong and H S Kwok, Transflective liquid crystal device and method of making the same, US patent number 8,013,957B2, September 2011.



List of Filed Patents
64. H. Takada, T. Kawara, H. Akiyama, V. Chigrinov, V. Kozenkov and H. S. Kwok, Mixtures for photo- alignment films and manufacturing methods for photo-alignment films, Japanese Patent application JP 2002-194885, filed on 3 July, 2002
65. H. Takada, H. Akiyama, V. Chigrinov, V. Kozenkov, H. S. Kwok, Mixtures for vertical alignment films and manufacturing methods for vertical alignment films, Japanese Patent application JP 2002-249535, filed on 28 August, 2002.
66. H. Takada, H. Akiyama, Y. Pozhidaev, D. Huang, V. Chigrinov, H. S. Kwok, Ferro-electric liquid crystal devices, Japanese Patent application JP2003-159804, filed June, 2003.
67. H. Takada, H. Akiyama, E. Pozhidaev*, D. Huang, V. Chigrinov, H. S. Kwok, Ferro-electric liquid crystal devices, Japanese Patent application JP 2003-159804, filed on 4 June, 2003.
68. H. Takada, H. Akiyama, V. Chigrinov, V. Kozenkov, H. S. Kwok, Mixtures for liquid crystal alignment films, liquid crystal alignment films, manufacturing methods for alignment films, and maleimid compounds, Japanese Patent application JP 2003-096876, filed on 31 March, 2003
69. K. Ikezu, H.Kondo, H.Takada, H.S. Kwok, V.G. Chigrinov, Liquid Crystal pretilt generating agents for photo-alignment layers, mixtures for photo-alignment layers, and manufacturing methods for photo- alignment layers, Japanese Patent Application 2003-390967.
70. H. Kondo, Y. Kuwana, H. Takada, V. G. Chigrinov, H.S. Kwok, An azo-compound for photoalignment layer, a mixture for photoalignment layer, and method of manufacturing of photoalignment layer, Japanese Patent application JP 2004-194424, filed on 30 June, 2004.
71. D. Huang, V.M. Kozenkov*, V.G. Chigrinov, H.S. Kwok, H. Takada, Method of manufacturing photoalignment layers for liquid crystal display devices and method of manufacturing liquid crystal display devices, Japanese Patent application JP 2004-197095, filed on 2 July, 2004.
72. Yasuhiro Kuwana, Hitoshi Kondo, Hirokazu Takada, V. G. Chigrinov, and H-S Kwok, Mixture for liquid crystal alignment layer and manufacturing method for liquid crystal alignment layer, Japanese Patent application JP 2004-257138, filed on 3 Sep. 2004.
73. Kazuaki Ikezu, Hitoshi Kondo, Hirokazu Takada, Yasuhiro Kuwana, Vladimir G. Chigrinov, Hoi Sing Kwok, An agent for photo-alignment layer, giving pretilt angle of a liquid crystal, a mixture for photo-alignment layer, and a method of manufacturing a photo-alignment layer, Japanese Patent application JP 2004-338168, filed on 22 November, 2004.
74. Anatoli Murauski, Xihua Li, Vladimir Chigrinov, and Hoi Sing Kwok, Rewritable Optically Addressed Photoaligned Liquid Crystal Device for Display, US Provisional Patent Application No. 60/731,757, filed on 1 November, 2005.
75. Kwok, Hoi-Sing; Yu, Fei-Hong; Li, Qing-Cheng; Yip, Wing-Chiu, Method and apparatus for driving reflective bistable cholesteric displays, US Patent Application No 20050024307, 2005
76. H S Kwok, Z G Meng, M Wong, J X Sun, X L Zhu and D L Zhang, Method for Fabrication of Active-Matrix Display Panels, US Provisional Application filed Nov 2005.
77. Kwok; Hoi-Sing; Yu; Fei-Hong; Li; Qing-Cheng; Yip; Wing-Chiu, Method and apparatus for driving reflective bistable cholestric displays, US Patent Application Number 20010015723 and 20050024307 and 20060055650, 2006.
78. H S Kwok, W.C. Yip, V Chigrinov, V. Kozenkov, Method for forming photo-patterned light polarizing films, , Hong Kong Patent, HK1046734, September 15, 2006
79. Vivian Wing-Wah Yam, Keith Man-Chung Wong, Hoi-Sing Kwok, Xiuling Zhu, Luminescent Gold(III) compound and organic light emitting device, US Patent Application Number 20060091378, 2006.
80. W.C. Yip, E. Prudnikova, H. S. Kwok, V. Chigrinov, V. Kozenkov, H. Takada, M. Fukuda, Manufacturing method for a photo-alignment film, Japanese Patent JP3883848, filed 11 November 2001, registered 24 November 2006.
81. KWOK; Hoi Sing; WONG; Man; SUN; Jiaxin; ZHU; Xiuling; PENG; Huajun, Intermediate layers treated by CF4 plasma for stacked organic light emitting devices, US Patent Application Number 20060250079, 2006.
82. Wong; Man; Kwok; Hoi-Sing; Meng; Zhiguo; Zhang; Dongli; Shi; Xuejie, Metal-induced crystallization of amorphous silicon, polycrystalline silicon thin films produced thereby and thin film transistors produced therefrom, US Patent Application No. 20060263957, 2006.
83. Yaroshchuk*, J. Ho, V. Chigrinov, H.S. Kwok, A method of preparation of a photo-alignment layer for polymerizable liquid crystal, US Provisional Patent Application no. 60/814,708, filed on 19 June 2006.
84. Anatoli Murauski, Xihua Li, Vladimir Chigrinov, Hoi Sing Kwok, Alexander Muravsky, Device for Optical Driving of the Rewritable Optically Addressed Photoaligned Liquid Crystal Device for Display, Japanese Patent application JP 2007-092658, filed on 30 March, 2007.
85. Oleg Yaroshchuk*, Leonid Dolgov, Jacob Ho, Hoi Sing Kwok, Vadimir Chigrinov, Haruyoshi Takatsu, Hiroshi Hasebe, Manufacturing method for optically anisotropic film, Japanese Patent application JP2007-132762, filed on 18 May, 2007.
86. Man Wong, H S Kwok and D L Zhang, Thin Film Transistor with Metal Source and Drain and Methods of Fabrication, US Patent Application Number 20070007530 A1, (January 2007).
87. H S Kwok and X J Yu, Bistable Liquid Crystal Display Device, US Patent Application Number 20070024782 A1, (Feb 2007).
88. Kwok; Hoi Sing; Wong; Man; Peng; Huajun; Sun; Jiaxin, Metallic anode treated by carbon tetrafluoride plasma for organic light emitting device, US Patent Application No. 20070046183, 2007.
89. Kwok; Hoi-Sing; Wong; Man; Sun; Jiaxin; Meng; Zhiguo; Zhu; Xiuling; Double sided emission organic light emitting diode display, US Patent Application No. 20070114522, 2007.
90. H S Kwok, M Wong, Z G Meng and S Y Zhao, Polycrystalline silicon thin film transistors with bridged grain structures, US provisional patent application no. 60/929338, August 2007.
91. H S Kwok and Y W Li, Fast liquid crystal mode, US provisional patent application no. 60/929338, May 2007.
92. H S Kwok, Transflective liquid crystal display, US provisional patent application no. 60/929338, October 2007.
93. Kondo; Hitoshi; Kuwana; Yasuhiro; Takada; Hirokazu; Chigrinov; Vladimir Grigorievich;, Kwok; Hoi-Sing, Azo Compound, Composition For Photo-Alignment Film Using The Same, And Method For Producing Photo-Alignment Film, US Patent Application Number 0254220, November 2007.
94. S Valyukh, V G Chigrinov and H S Kwok, Low voltage liquid crystal lens with variable focal length, US provisional patent application no., April 2008.
95. H S Kwok, Y W Li and C Y Lee, Method to obtain controlled pretilt and azimuthal angles in a liquid crystal cell, US provisional patent application no., May 2008.