Liquid crystal display with two transistors per pixel driven at

Details Liquid crystal display with two transistors per pixel driven at Liquid crystal display with two transistors per pixel driven at

1993-07-15

1995-09-26

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 59, G02F 11343

Patent

active

054538572

ABSTRACT:
An active matrix liquid crystal display device in which pixel electrodes are formed in overlapping relation with source signal lines through an insulating thin-film. One of the source signal lines positioned on a left side of the pixel electrode is referred to as a first source signal while that on a right side of the pixel electrode is referred to as a second source signal. When a thin-film transistor is switched off, a parasitic capacitance between the first source signal and the pixel electrode and that between the second source signal and the pixel electrode are equal to each other. The first and second source signal lines apply respective signals of opposite polarities. The pixel electrode is formed of ITO and is not formed over the thin-film transistor. Orientation is carried out along the signal lines. With the liquid crystal display device used as a light valve, a projection display system capable of providing a projected image of high image quality at a high luminance can be realized. In such case, a phase difference plate of 5 to 50 nm is disposed between the liquid crystal display device and a polarizing plate to accomplish a phase compensation.

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