Pixel electrode structure for liquid crystal display devices

Details Pixel electrode structure for liquid crystal display devices Pixel electrode structure for liquid crystal display devices

1990-03-15

1991-10-22

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

357 4, 357 237, 359 87, G02F 113

Patent

active

050589954

ABSTRACT:
A liquid crystal pixel electrode and a thin film transistor (TFT) structure includes a select line, a portion of which is coated with undoped solid state material. The select line is parallel to a continuous uninterrupted side of the pixel electrode and a data line is parallel to another continuous uninterrupted side of the pixel electrode. A source area and a drain area of doped solid state material are placed over the undoped layer. The source area contacts the data line and the drain area contacts the pixel electrode. The select line also serves as the gate electrode of the TFT. A notch passes through the undoped material between the data line and the drain to prevent leakage.

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patent: 4705358 (1987-11-01), Yamazaki et al.
patent: 4720736 (1988-01-01), Takafuji et al.
patent: 4857907 (1989-08-01), Koden
patent: 4862234 (1989-08-01), Koden
patent: 4889411 (1989-12-01), Parks et al.
patent: 4961629 (1990-10-01), Kato

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