Active matrix display device

Details Active matrix display device Active matrix display device

2005-07-05

2005-07-05

Nguyen, Dung T. (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S043000

Reexamination Certificate

active

06914642

ABSTRACT:
In an active matrix display device, a circuit including at least five thin film transistors (TFTs) which are provided with an approximately M-shaped semiconductor region for a single pixel electrode and gate lines and a capacitances line which cross the M-shaped semiconductor region, is used as a switching element. Each of the TFT have offset regions and lightly doped drain (LDD) regions. Then, by supplying a selection signal to the gate lines, the TFTs are operated, thereby writing data to the pixel, while a suitable voltage is supplied to the capacitance line, a channel is formed thereunder and it becomes a capacitor. Thus the amount of discharge from the pixel electrode is reduced by the capacitor.

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