IP Library Granted Patent US 7,460,199
Granted Patent B2
US 7,460,199 · App. 11/543,816 · Granted Dec 2, 2008

Liquid crystal display device, method of manufacturing liquid crystal display device, and electronic apparatus

Assignee: Seiko Epson Corporation
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Quick Facts
Patent No.
US 7,460,199
App. No.
11/543,816
Granted
Dec 2, 2008
Kind
B2
Abstract

To provide a liquid crystal display device and an electronic apparatus in which deterioration of contrast due to a protrusion or a slit used for division of alignment can be prevented in the liquid crystal display device including a liquid crystal which has a negative dielectric anisotropy exhibiting vertical alignment as an initial alignment state. There is provided a liquid crystal display device comprising a liquid crystal layer, which includes a liquid crystal having a negative dielectric anisotropy exhibiting vertical alignment as an initial alignment state, between a pair of substrates and disposed to be opposite to each other, in which alignment control means for controlling alignment of the liquid crystal layer is provided on at least one of electrodes provided on the pair of substrates, and in which a light-shielding film BM two-dimensionally overlapped with the alignment control means is provided on at least one substrate of the pair of substrates.

Claims (9)

1. A liquid crystal display device of vertical alignment mode comprising:

a pair of substrates disposed to be opposite to each other;

a liquid crystal layer, which includes liquid crystal including a negative dielectric anisotropy, disposed between the pair of substrates;

a first electrode provided at the side of the liquid crystal layer on one substrate of the pair of substrates;

an alignment control portion, provided on the one substrate, for controlling the alignment of the liquid crystal, the alignment control portion having an island shape;

a light-shielding film provided on the other substrate, the light-shielding film having an island shape corresponding to the alignment control portion, the light-shielding film is made of a metal film, and the light-shielding film being two-dimensionally overlapped with the alignment control portion and being disposed at a position corresponding to the alignment control portion; and

a second electrode provided at the side of the liquid crystal layer on the other substrate of the pair of substrates by the material of a transparent conductive film, the second electrode electrically connected with the light-shielding film, the second electrode being larger than the light-shielding film, and provided in an area where the light-shielding film is completely included by the second electrode in plan view.

2. The liquid crystal display device according to claim 1 , wherein the alignment control portion at least includes either a dielectric protrusion formed on the first electrode or an electrode opening portion formed by cutting out a part of the first electrode.

3. The liquid crystal display device according to claim 1 , wherein the second electrode is provided directly on the light-shielding film.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 1, 2017
From: SEIKO EPSON CORPORATION
To: MICROSOFT TECHNOLOGY LICENSING, LLC
Reel/Frame 044003/0557 →
Priority Claims (2)
JP 2003-411844 · Dec 10, 2003 · national
JP 2004-242076 · Aug 23, 2004 · national
Continuity (2)
Continuation 1099280600 · Nov 22, 2004
Related Publication 20070024785A1 · Feb 1, 2007