Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1993-10-15
1996-09-03
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 54, 359 50, 359 87, 359100, G02F 11343, G02F 11335
Patent
active
055529119
ABSTRACT:
A liquid crystal display device is constituted by a pair of electrode plates each having a plurality of elongated electrodes, and a layer of ferroelectric liquid crystal disposed between the electrode plates so as to form a pixel at each intersection of elongated electrodes disposed respectively on the pair of electrodes plates. At least one electrode plate is provided with an unevenness at each pixel so as to form a cell thickness gradient within each pixel, and at least one electrode plate is provided with at least three types of color filters each corresponding to a pixel. Further, each color filter and/or each pixel is set to have an area and/or a shape varying depending on a local cell thickness so that light quantities or sensible light quantities transmitted through the respective filters and the liquid crystal layer are identical to each other regardless of the type of color filter. A similar pixel pattern deformation is effective for providing a linear T (transmittance)--log V (voltage) characteristic. Color pixels pattern deformation may preferably be effected in a complementary manner with respect to different colors.
REFERENCES:
patent: 4470667 (1984-09-01), Okubo et al.
patent: 4639089 (1987-01-01), Okada et al.
patent: 4655561 (1987-04-01), Kanbe et al.
patent: 4671058 (1988-08-01), Okubo et al.
patent: 4681404 (1987-07-01), Okada et al.
patent: 4712874 (1987-12-01), Sekimura et al.
patent: 4712877 (1987-12-01), Okada et al.
patent: 4712878 (1987-12-01), Taniguchi et al.
patent: 4714636 (1987-12-01), Yokono et al.
patent: 4733948 (1988-03-01), Kitahara
patent: 4744637 (1988-05-01), Sekimura et al.
patent: 4747671 (1988-05-01), Takahashi et al.
patent: 4786148 (1988-11-01), Sekimura et al.
patent: 4796980 (1989-01-01), Kaneko et al.
patent: 4802743 (1989-02-01), Takao et al.
patent: 4802744 (1989-02-01), Shindo et al.
patent: 4818075 (1989-04-01), Takao et al.
patent: 4911733 (1990-03-01), Matsumoto et al.
patent: 4917471 (1990-04-01), Takao et al.
patent: 4929061 (1990-05-01), Tominaga et al.
patent: 5059000 (1991-10-01), Kaneko et al.
patent: 5078475 (1992-01-01), Sekimura et al.
patent: 5101289 (1992-03-01), Takao et al.
patent: 5177627 (1993-01-01), Ishiwata et al.
patent: 5185059 (1993-02-01), Nishida et al.
patent: 5264954 (1993-11-01), Okada
patent: 5317437 (1994-05-01), Katakura
patent: 5408246 (1995-04-01), Inaba et al.
Patent Abstracts of Japan, vol. 11, No. 40 (Feb. 5, 1987) (P-544).
Patent Abstracts of Japan, vol. 16, No. 39 (Jan. 30, 1992) (P-1305).
Patent Abstracts of Japan, vol. 16, No. 500 (Oct. 15, 1992) (P-1437).
Clark et al., Ferroelectric Liquid Crystal Electro-Optics Using the Surface Stabilized Structure, Mol. Cryst. Liq. Cryst., vol. 94 (1983) 213-34.
Inaba Yutaka
Katakura Kazunori
Kojima Makoto
Okada Shinjiro
Canon Kabushiki Kaisha
Duong Tai V.
Sikes William L.
LandOfFree
Color liquid crystal display device having varying cell thicknes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color liquid crystal display device having varying cell thicknes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color liquid crystal display device having varying cell thicknes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1955131