Reflection type liquid crystal display device wherein the reflec

Details Reflection type liquid crystal display device wherein the reflec Reflection type liquid crystal display device wherein the reflec

1994-06-24

1995-04-18

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 70, 359 79, 359 87, G02F 11343, G02F 11335, G02F 11333

Patent

active

054083451

ABSTRACT:
The object of this invention is to enhance the display quality of reflection type liquid crystal display device having the constitutions of an organic insulating film is formed on a thin film transistor formed on a substrate, and contact holes and bumps are formed at the positions for forming reflection electrodes on the organic insulating film. The reflection electrodes are formed thereon, and drain electrodes and reflection electrodes 38 are connected through the contact holes. The effect of this invention is since the bumps are formed only in the portions of the reflection electrodes, patterning of the reflection electrodes is easy, and insulation failure between source bus wirings and reflection electrodes does not occur, and the display quality is enhanced.

REFERENCES:
patent: 4431272 (1984-02-01), Yazawa et al.
patent: 4519678 (1985-05-01), Komatsubara et al.
patent: 5204765 (1993-04-01), Mitsui et al.
patent: 5210628 (1993-05-01), Shields et al.
White et al. "New absorptive mode reflective liquid crystal display device", J. Appl. Phys. 45 (Nov. 1974), pp. 4718-4723.
Koizumi et al. "Reflective Multicolor Lcd(II): Improvement in the Brightness" Proceedings of the SID, vol. 29/2, (1988), pp. 157-160.

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