IP Library Granted Patent US 10,823,992
Granted Patent B2
US 10,823,992 · App. 16/574,325 · Granted Nov 3, 2020

Liquid crystal display device

Inventors: Kazuhiko Yanagawa (Mobara, JP); Yasushi Iwakabe (Ooamishirasato, JP); Yoshiaki Nakayoshi (Ooamishirasato, JP); Masatoshi Wakagi (Hitachi, JP)
Assignees: Japan Display Inc.; Panasonic Liquid Crystal Display Co., Ltd.
G02F1/13306G02F1/1333G02F1/1341G02F1/1368G02F1/13394G02F1/13452G02F1/133305G02F1/133345G02F1/133512G02F1/136286G02F1/1339G02F1/1345G02F1/134363G02F2001/13398G02F2001/13629G02F2001/133334G02F2001/133354G02F2001/136295G02F2201/503G02F2202/02
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Quick Facts
Patent No.
US 10,823,992
App. No.
16/574,325
Granted
Nov 3, 2020
Kind
B2
Abstract

There is provided a liquid crystal display (LCD) device that prevents light leaks near spacers. The LCD device controls the optical transmissivity of a liquid crystal layer interposed between substrates disposed opposite each other, by means of an electric field generated in the layer-thickness direction of the liquid crystal layer. The LCD device includes spacers on a liquid-crystal-side surface of one substrate, signal lines formed on a liquid-crystal-side surface of the other substrate, an insulating film formed to cover the signal lines, and electrodes on the insulating film's upper surface. Each electrode contributes to controlling the optical transmissivity of the liquid crystal layer. Each spacer has a vertex surface disposed opposite to the signal lines. A portion of each electrode extends to the upper surface of a corresponding signal line. The extended portion is opposite to a part of a spacer's vertex surface disposed opposite to the corresponding signal line.

Claims (21)

1. A display device comprising:

a first substrate;

a signal line provided on the first substrate;

a plurality of terminals included a first terminal electrically connected to the signal line;

a driver chip electrically connected with terminals;

an interconnection line provided on the first substrate; and

a protective layer covering the interconnection line,

wherein the protective layer includes an inorganic material layer,

wherein the interconnection line is between the first substrate and the driver chip in a sectional view, and

wherein the interconnection line extends between terminals in a plan view and is not electrically connected with the driver chip.

2. The display device according to the claim 1 , further comprising:

an anisotropic conductive film contacting the terminal and the driver chip, wherein the anisotropic conductive film overlaps with the interconnection line.

3. The display device according to the claim 1 , wherein the interconnection line extends along a long-side direction of the driver chip in a plain view.

4. The display device according to the claim 1 , wherein the interconnection line and the terminals are located in same layer.

5. The display device according to the claim 1 , wherein the interconnection line is one of a common line, another signal line, and an inspection line.

6. The display device according to the claim 2 , wherein the driver chip has a bump, the bump is electrically connected with the terminal, and the terminal contacts the anisotropic conductive film.

7. The display device according to the claim 1 , wherein the inorganic material layer is a silicon nitride layer.

8. The display device according to the claim 1 , further comprising:

a recognizing mark formed on the surface.

9. The display device according to the claim 8 , wherein the recognizing mark is a cross shape.

10. The display device according to the claim 8 , wherein the recognizing mark is formed near the driver chip or substrate with a semiconductor integrated circuit.

Priority Claims (1)
JP 2000-384173 · Dec 18, 2000 · national
Continuity (10)
Continuation 15969223 · May 2, 2018
Continuation 15617880 · Jun 8, 2017
Division 14512004 · Oct 10, 2014
Division 13373291 · Nov 10, 2011
Division 12662708 · Apr 29, 2010
Division 12081347 · Apr 15, 2008
Continuation 11437712 · May 22, 2006
Division 10694056 · Oct 28, 2003
Division 09948758 · Sep 10, 2001
Related Publication 20200012133A1 · Jan 9, 2020