Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2005-03-22
2005-03-22
Ben, Loha (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C345S107000, C428S166000, C428S156000, C204S453000, C204S604000, C523S200000, C525S374000
Reexamination Certificate
active
06870662
ABSTRACT:
The present invention is directed to methods for improving the performance of an electrophoretic display by modifying the display cell surface. More specifically, the methods are directed to modification of the microcup surface after the microcups are released from the mold. The microcups which have undergone any of the treatment methods of the invention show significant improvement in their surface properties, such as chemical functionality, surface roughness, surface tension, morphology, surface charge, surface reflectivity, surface conductivity and optical properties, particularly optical density in the visible light region. An electrophoretic display formed from the treated microcups has many advantages. For example, the display shows a higher contrast ratio, lower electro-optic response time, lower driving voltage, longer shelf life, higher imageincreasing bistability and higher threshold voltage. In addition, it exhibits an improved image quality by reducing undesirable scum formation or irreversible particle deposition on the microcup surface.
REFERENCES:
patent: 3668106 (1972-06-01), Ota
patent: 4071430 (1978-01-01), Liebert
patent: 4093534 (1978-06-01), Carter et al.
patent: 4285801 (1981-08-01), Chiang
patent: 4680103 (1987-07-01), Beilin Solomon et al.
patent: 5380362 (1995-01-01), Schubert
patent: 5403518 (1995-04-01), Schubert
patent: 5573711 (1996-11-01), Hou et al.
patent: 5914806 (1999-06-01), Gordon II et al.
patent: 5930026 (1999-07-01), Jacobson et al.
patent: 5961804 (1999-10-01), Jacobson et al.
patent: 6017584 (2000-01-01), Albert et al.
patent: 6751007 (2004-06-01), Liang et al.
patent: 6751008 (2004-06-01), Liang et al.
patent: 6753067 (2004-06-01), Chen et al.
patent: 20020126249 (2002-09-01), Liang et al.
patent: 20020182544 (2002-12-01), Chan-Park et al.
patent: 20030169227 (2003-09-01), Wu et al.
patent: 59 171931 (1984-09-01), None
patent: WO 01067170 (2001-09-01), None
patent: WO 0201281 (2002-01-01), None
patent: WO 02056097 (2002-07-01), None
patent: WO 0265215 (2002-08-01), None
U.S. Appl. No. 60/345,934, filed Jan. 2002, Chen, et al.
U.S. Appl. No. 60/345,936, filed Jan. 2002, Chen, et al.
Chen, S.M. (May, 2003) The New Applications and the Dynamics of Companies.TRI.1-10. (In Chinese, English abstract attached, full translation available upon request).
Liang, R.C., Hou, J., Zang, H.M., Chung, J., & Tseng, S. (2003). Microcup(R) displays : Electronic Paper by Roll-to-Roll Manufacturing Processes.Journal of the SID,11(4), 621-628.
Nikkei Microdevices. (Dec., 2002) Newly-Developed Color Electronic Paper Promises—Unbeatable Production Efficiency.Nikkei Microdevices, 3.(in Japanese, with English translation).
Dalisa, A.L. “Electrophoretic Display Technology”IEEE Trans. Electron Devices,ED-24 827-834 (1977).
Hopper, M., et al. “An Electrophoretic Display, Its Properties, Model and Addressing”IEEE Trans. Electr.Dev. 26(8):1148-1152 (1979).
Liang, R.C et al., “Microcup Electrophoretic Displays by Roll-to-Roll Manufacturing Processes”Proc. of the IDW'02,International Conference Center Hiroshima (Dec. 4-6, 2002).
Liang, R.C., “Microcup® Electrophoretic and Liquid Crystal Displays by Roll-to-Roll Manufacturing Process”USDC Flexible Microelectronics&Displays ConferencePhoenix, AZ (Feb. 2-4, 2003).
Liang, R.C. et al., “Passive Matrix Microcup® Electrophoretic Displays”Proc. of the IDMC'03,Taipei International Convention Center Taiwan (Feb. 18-21, 2003).
Liang, R.C. et al., “Microcup® LCD ANew Type of Dispersed LCD by A Roll-to-Roll Manufacturing Process”Proc. of the IDCM'03,Taipei International Convention Center Taiwan (Feb. 18-21, 2003).
Murau, P. et al. “The Understanding and Elimination of Some Suspension instabilities in an Electrophoretic Display”Journal of Applied Physics49(9):4820-4829 (1978).
U.S. Appl. No. 10/335,051, filed Dec. 31, 2002, (not published, available upon request).
U.S. Appl. No. 9/518,488, filed Mar. 3, 2000, (not published, available upon request).
U.S. Appl. No. 09/606,654, filed Jun. 28, 2000, (not published, available upon request).
Hou Jack
Liang Rong-Chang
Tseng Scott C-J
Wang Xiaojia
Wu Zarng-Arh George
Ben Loha
Howrey Simon Arnold & White , LLP
SiPix Imaging Inc.
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