IP Library Granted Patent US 7,764,254
Granted Patent B2
US 7,764,254 · App. 12/179,256 · Granted Jul 27, 2010

Electro-optical device and electronic apparatus

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Quick Facts
Patent No.
US 7,764,254
App. No.
12/179,256
Granted
Jul 27, 2010
Kind
B2
Abstract

An electro-optical device includes a first sub pixel and a second sub pixel. A pixel is configured by the first sub pixel and the second sub pixel only, and the first sub pixel and the second sub pixel emit light of different colors.

Claims (28)

1. An electro-optical device comprising:

a first sub pixel; and

a second sub pixel,

wherein a pixel is adapted to be configured by the first sub pixel and the second sub pixel only, and

the first sub pixel and the second sub pixel are adapted to emit light of different colors.

2. The electro-optical device according to claim 1 , wherein the first sub pixel and the second sub pixel are color sub pixels.

3. The electro-optical device according to claim 1 , wherein at least one of the first sub pixel and the second sub pixel is a monochrome sub pixel that is adapted to emit white light.

4. The electro-optical device according to claim 1 , wherein the first sub pixel and the second sub pixel have a same size.

5. The electro-optical device according to claim 1 , wherein the first sub pixel and the second sub pixel have different sizes.

6. The electro-optical device according to claim 1 , further comprising

a plurality of pixel arrays in which a plurality of the first sub pixels and a plurality of the second sub pixels are alternately disposed along a first direction, and in pixel arrays adjacent in a second direction, positions of the first sub pixel and the second sub pixel in the first direction are deviated from each other, wherein the first direction is perpendicular to the second direction.

7. The electro-optical device according to claim 1 , further comprising:

a component substrate in which the sub pixels are formed; and

an electro-optical material that is maintained in the component substrate,

wherein a color filter is disposed in an area corresponding to at least one of the first sub pixel or the second sub pixel.

8. The electro-optical device according to claim 1 , wherein the first sub pixel and the second sub pixel are driven to have two different gray scale levels.

9. The electro-optical device according to claim 1 , further comprising a back light,

wherein light sources of the back light include a first light source that is adapted to emit light of a same color as that of the first sub pixel and a second light source that is adapted to emit light of a same color as that of the second sub pixel.

10. The electro-optical device according to claim 1 , further comprising a back light,

wherein the back light includes a first light source and a second light source, the first light source and the second light source being LEDs, and

wherein the numbers of the first light sources to be turned on and the second light sources to be turned on are different from each other.

11. The electro-optical device according to claim 1 , further comprising a back light,

wherein the back light includes a first light source and a second light source, the first light source and the second light source being LEDs, and

wherein the first light source and the second light source are adapted to be driven by different amounts of current from each other.

12. An electronic apparatus comprising the electro-optical device according to claim 1 .

13. The electronic apparatus according to claim 12 , further comprising:

a light source that supplies light to the electro-optical device; and

an optical system that adapted to project display light that is formed by optically modulating the light emitted from the light source by using the electro-optical device toward a projection surface.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 15, 2018
From: SEIKO EPSON CORPORATION
To: 138 EAST LCD ADVANCEMENTS LIMITED
Reel/Frame 046153/0397 →
RE-RECORD TO ADD THE NAME OF THE SECOND ASSIGNOR, PREVIOUSLY RECORDED ON REEL 021287 FRAME 0966. Recorded Aug 6, 2008
From: KINUGAWA, TOMOKATSU; IMAI, KAZUKI
To: EPSON IMAGING DEVICES CORPORATION
Reel/Frame 021352/0956 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 24, 2008
From: KINUGAWA, TOMOKATSU
To: EPSON IMAGING DEVICES CORPORATION
Reel/Frame 021287/0966 →