Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Reexamination Certificate
2005-01-04
2005-01-04
Chowdhury, Tarifur R. (Department: 2871)
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
C349S192000, C349S039000
Reexamination Certificate
active
06839099
ABSTRACT:
A connection electrode and an island connection electrode which are coupled with each other via a drain thin line portion are serially provided at two different portions in an extension direction of a drain electrode of a TFT. The two connection and island connection electrodes are respectively connected to a pixel electrode via contact holes respectively formed in a layer insulating film. The distantly disposed connection electrode is stacked onto an auxiliary capacitance electrode via a gate insulating film in-between so as to form a storage capacitance. The island connection electrode is stacked onto an island auxiliary capacitance electrode via the gate insulating film in-between so as to form an island storage capacitance. The island auxiliary capacitance electrode is connected to the auxiliary capacitance electrode through an auxiliary capacitance electrode thin line portion. A liquid crystal display device having this arrangement is capable of an easy correction of leaking defects between the auxiliary capacitance electrode and the drain electrode and between source wiring and the drain electrode, and normalization of pixels.
REFERENCES:
patent: 5173792 (1992-12-01), Matsueda
patent: 6025892 (2000-02-01), Kawai et al.
patent: 04080723 (1992-03-01), None
patent: 06-326920 (1994-12-01), None
patent: 8-184842 (1996-07-01), None
patent: 448332 (2001-08-01), None
Taiwan Patent Office First Office Action dated Mar. 9, 2004 (3pp.) for application No. 090112931 and English Translation (4pp).
Chowdhury Tarifur R.
Conlin David G.
Edwards & Angell LLP
Hartnell, LLP George W.
Nguyen Hoan C.
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