Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2008-01-22
2009-12-22
Nelms, David (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S142000
Reexamination Certificate
active
07636144
ABSTRACT:
A method of manufacturing a liquid crystal display device10A according to an embodiment of the present invention includes: forming a pixel electrode19afor each sub-pixel on the surface of a planarization film18, forming an insulator20over the whole surface, simultaneously forming first to third contact holes21ato21cso that a drain electrode D, a connection portion161of a common line, and the pixel electrode19aare exposed from the surface of the insulator20, forming a film of a transparent conductive material over the whole surface, forming a common electrode22aincluding a plurality of slits for each sub-pixel, and connecting the common electrode22and the connection portion161via the first contact hole21aand connecting the pixel electrode19aand the drain electrode D via an interface-structured conductive path23formed via the second contact hole21b, the surface of the insulator20, and the third contact hole21c. Accordingly, the invention provides an FFS mode liquid crystal display device and a method of manufacturing the same in which the plurality of contact holes can be formed simultaneously in a single step and the pixel electrode and the common electrode are disposed on the planarization film.
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Horiguchi Masahiro
Kaneko Hideki
Epson Imaging Devices Corporation
Harness & Dickey & Pierce P.L.C.
Nelms David
Vu Phu
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