Active matrix liquid crystal display device having two light shi

Details Active matrix liquid crystal display device having two light shi Active matrix liquid crystal display device having two light shi

1993-04-19

1994-09-06

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 59, 359 75, G02F 1136, G02F 1133

Patent

active

053453247

ABSTRACT:
In a liquid crystal display device including a first transparent insulating substrate having a common electode formed theron; a second transparent insulating substrate having gate lines formed in a first direction; data lines formed in a second direction so as to intersect said gate lines, liquid crystal display cells, each at a crosspoint of said gate and data lines; the cells having a thin film transistor and a display electrode; a light shielding layer having an aperture for exposing a display area of each display electrode; a liquid crystal material retained between said first and second substrates, and a liquid crystal orientating layer on at least one of the substrates, the improvement comprising, the light shielding layer at an edge of said aperture being located in an up stream direction with respect to a rubbing direction of the orientating layer of the substrate, comprising a thin light shielding layer formed at a periphery of the display electrode for defining an edge of the aperture, and a thick light shielding layer having an edge positioned on the thin light shielding layer.

REFERENCES:
patent: 4759610 (1988-07-01), Yanagisawa
patent: 5121237 (1992-06-01), Ikeda et al.
patent: 5245452 (1993-09-01), Nakamura et al.
patent: 5282068 (1994-01-01), Inaba
Tsumura et al "High-Resolution 10.3-in. Diagonal Multicolor TFT-LCD" SID 91 Digest-1991-pp. 215-218.

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