IP Library Granted Patent US 7,576,818
Granted Patent B2
US 7,576,818 · App. 11/490,055 · Granted Aug 18, 2009

Liquid crystal display device and electronic apparatus

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Quick Facts
Patent No.
US 7,576,818
App. No.
11/490,055
Granted
Aug 18, 2009
Kind
B2
Abstract

To provide a transflective liquid crystal display device capable of obtaining a display with a high brightness, a high contrast, and a wide viewing angle, a vertical alignment mode using liquid crystal layer whose initial alignment state represents a vertical alignment is utilized, the reflective display region is provided to surround the periphery of the transmissive display region within a single dot region, and an insulating film for regulating the thickness of the liquid crystal layer is provided in a region corresponding to the reflective display region R in the periphery of the dot. In addition, in the substrate (counter substrate) opposite to the side where the insulating film is formed, an opening is provided in a common electrode at a position corresponding to the boundary between the reflective display region and the transmissive display region.

Claims (18)

1. A liquid crystal display device comprising:

a liquid crystal layer interposed between a pair of substrates and formed of liquid crystal with a negative dielectric anisotropy;

a dot region;

a transmissive display region for transmissive display and a reflective display region for reflective display are provided the dot region;

a thickness-adjusting layer of the liquid crystal layer which makes a thickness of the liquid crystal layer in the reflective display region thinner than a thickness of the liquid crystal layer in transmissive display region, the thickness-adjusting layer of the liquid crystal layer provided at least one of the pair of substrates and having an inclined plane; and

an electrode provided on the substrate opposite to the side where the thickness-adjusting layer of the liquid crystal layer is provided; and

a protrusion being provided at a position corresponding to the inclined plane on the electrode;

the inclined plane is provided in the vicinity of the boundary between the reflective display region and the transmissive display region, the protrusion controlling an alignment direction or the liquid crystal.

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

within the single dot region, the transmissive display region being provided in the center of the dot region, the reflective display region being provided at the peripheral edge of the dot region to surround the periphery of the transmissive display region, and, among the electrodes on the pair of substrates, an opening being provided at a position substantially corresponding to the center of the transmissive display region in the electrode on the substrate side where the thickness-adjusting layer of the liquid crystal layer is provided.

3. The liquid crystal display device according to claim 1 , further comprising:

within the single dot region, the transmissive display region being provided in the center of the dot region, the reflective display region being provided at the peripheral edge of the dot region to surround the periphery of the transmissive display region, and, among the electrodes on the pair of substrates, a protrusion being provided at a position substantially corresponding to the center of the transmissive display region in the electrode on the substrate side where the thickness-adjusting layer of the liquid crystal layer is provided.

4. The liquid crystal display device according to claim 1 ,

color filters being provided on the inner side of any one of the pair of substrates.

5. The liquid crystal display device according to claim 1 ,

a substantially circular polarized light incidence device being provided to make substantially circular polarized light incident on each of the pair of substrates.

6. An electronic apparatus, comprising:

a liquid crystal display device according to claim 1 .

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2016
From: SEIKO EPSON CORPORATION
To: BOE TECHNOLOGY (HK) LIMITED
Reel/Frame 037515/0050 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2016
From: BOE TECHNOLOGY (HK) LIMITED
To: BOE TECHNOLOGY GROUP CO., LTD.
Reel/Frame 037515/0082 →