Color display device

Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal

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Details

349106, 349122, 349138, G02F 1136, G02F 11333

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active

059431075

ABSTRACT:
A color display device such as an active-matrix type liquid crystal display apparatus has a first substrate having pixel electrodes arranged in the form of the matrix, switching elements associated with respective pixel electrodes and color filters aligned with the respective pixel electrodes. The first substrate is composed of a laminate structure including, superposed in the mentioned sequence, a first layer having the switching elements, a second layer having the color filters, a third layer including a planarization film which fills convexities presented by the switching elements and the color filters, and a fourth layer having the pixel electrodes aligned with the color filter. The display device also has a second substrate including a counter electrode and adjoined to the first substrate leaving a predetermined gap left therebetween. A liquid crystal is charged in the gap between the first and second substrates.

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patent: 5446562 (1995-08-01), Sato
patent: 5539551 (1996-07-01), Nomoto et al.
patent: 5585951 (1996-12-01), Noda et al.
Patent Abstracts of Japan, vol. 17, No. 33, JP42530258, Eiichi et al., Aug. 9, 1992.
Patent Abstracts of Japan, vol. 13, No. 424, JP1156725, Yojiro, Feb. 6, 1989.
Patent Abstracts of Japan, vol. 18, No. 402, JP6118400, Shigeki et al., Apr. 28, 1994.

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