Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Patent
1994-12-16
1996-12-03
Fahmy, Wael M.
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
257690, 257784, 257786, 349 42, G02F 11343, H01L 2348
Patent
active
055813828
ABSTRACT:
A TFT-LCD panel structure to prevent a TFT-LCD device provided therein from being damaged due to moisture penetration. The structure comprises upper and lower substrates and a display part having a thin film transistor array provided with a plurality of gate bus lines. A plurality of source bus lines are formed on the lower substrate and a pixel portion is formed on the upper substrate. A liquid crystal layer is formed between the substrates. Gate pad portions are formed at one side of the display part and include a plurality of gate pads connected to each corresponding gate bus line, for supplying a driving voltage to each of the gate bus lines through each corresponding gate pad. A first single passivation layer encloses each of the gate pad portions. Source pad portions are formed at upper and lower sides of the display part and include a plurality of source pads connected to each corresponding source bus line, for supplying a signal voltage to the source bus lines. Each of the source pad portions is enclosed in a second single passivation layer. A third passivation layer covers only the display part other than the gate and source pad portions.
REFERENCES:
patent: 5172212 (1992-09-01), Baba
patent: 5187604 (1993-02-01), Taniguchi et al.
patent: 5349205 (1994-09-01), Kobayashi et al.
patent: 5430329 (1995-07-01), Harada et al.
Abraham Fetsum
Fahmy Wael M.
Goldstar Co. Ltd.
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