Active-matrix liquid crystal display and fabrication method ther

Details Active-matrix liquid crystal display and fabrication method ther Active-matrix liquid crystal display and fabrication method ther

1997-05-20

1998-06-16

Sikes, William L.

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

349 46, 257 59, 257 72, 257408, G02F 1136, H01L 2904, H01L 31036, H01L 2976

Patent

active

057679304

ABSTRACT:
An active-matrix liquid crystal display integrally formed with a driver circuit including: a pair of substrates disposed in opposing relation to each other; and a liquid crystal material sandwiched between the pair of substrates, wherein the pair of substrates includes: a TFT substrate including at least an insulative substrate, source interconnection line and gate interconnection line which are formed in a matrix pattern on the insulative substrate, a thin film transistor provided to each pixel portion for use as a switching element for applying a voltage to a portion of the liquid crystal material which lies at a location where the source interconnection line and the gate interconnection line intersect each other, a pixel electrode connected to a drain electrode of the thin film transistor for supplying a voltage to the liquid crystal material, and a CMOS driver circuit having a CMOS which comprises thin film transistors for supplying an electric signal to the thin film transistor of the pixel portion through the source interconnection line and the gate interconnection line; and a counterpart substrate including an insulative substrate and a counter electrode formed thereon, the thin film transistor provided to the pixel portion being of a first conductivity type and of an offset or LDD structure, at least a first conductivity type thin film transistor of the thin film transistors of the CMOS driver circuit being of an offset or LDD structure.

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