Circuit plate, process for producing same and liquid crystal dev

Details Circuit plate, process for producing same and liquid crystal dev Circuit plate, process for producing same and liquid crystal dev

1996-08-28

1999-05-18

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349152, 349155, 349189, 349190, 349138, 349143, 349147, G02F1/1333;1/1343;1/1345;1/1339;1/1341

Patent

active

059055588

ABSTRACT:
A circuit plate, suitable for constituting an optical modulation device, such as a liquid crystal device, includes a light-transmissive substrate, and a plurality of principal electrodes and sub-electrodes supported on the light-transmissive substrate. Each sub-electrode is disposed between an associated principal electrode and the light-transmissive substrate so as to be electrically connected with the associated principal electrode. The plurality of sub-electrodes are disposed in a region in the light-transmissive substrate with gaps therebetween which are filled with an insulating layer, the sub-electrodes and the insulating layer in combination forming a surface on which the principal electrodes are formed. Further, a plurality of projection pieces are disposed in a region on the light-transmissive substrate outside the region of the sub-electrodes so as to be free from connection with the principal electrodes and the sub-electrodes. A liquid crystal device may be formed by disposing a liquid crystal between a pair of the circuit plates. The circuit plate is provided with an improved planarity over the entire effective optical modulation region and an improved connectability with peripheral ICs.

REFERENCES:
patent: 4712874 (1987-12-01), Sekimura et al.
patent: 4714636 (1987-12-01), Yokono et al.
patent: 4744637 (1988-05-01), Sekimura et al.
patent: 4818075 (1989-04-01), Takao et al.
patent: 4917471 (1990-04-01), Takao et al.
patent: 5078475 (1992-01-01), Sekimura et al.

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