Liquid crystal display device, method of correcting defective pi

Details Liquid crystal display device, method of correcting defective pi Liquid crystal display device, method of correcting defective pi

1992-03-26

1993-11-30

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 59, 359 62, G02F 11335, G02F 11343

Patent

active

052670660

ABSTRACT:
In a liquid crystal display device having pixels arranged in a matrix form, light is allowed to pass or blocked depending upon whether or not a voltage is applied to electrodes each corresponding to the pixels, and the display operation is conducted by controlling the transmission
ontransmission of light. When a conductor or switching element connected to an electrode is broken, it is not possible to apply such a voltage to the respective electrode. Such a pixel is always at the light transmission display state, with the result that the pixel becomes a bright spot, thereby degrading the display quality. Therefore, a blocking piece for blocking light is disposed over the pixel which becomes a bright spot. This prevents the bright spot from appearing, thereby improving the display quality.

REFERENCES:
patent: 2782756 (1957-02-01), Hunt
patent: 5095379 (1992-03-01), Fukunaga
patent: 5121236 (1992-06-01), Ukai et al.
patent: 5142386 (1992-08-01), Ishihara
N. Morozumi et al., "Part 5, Panel Technique Thesis Active Matrix Liquid Crystal: Structure" Nikkei BP sha Denki Group, Nov. 1, 1989, pp. 124-133.

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