IP Library Granted Patent US 7,492,337
Granted Patent B2
US 7,492,337 · App. 11/023,352 · Granted Feb 17, 2009

Electro-optical device

Assignee: Seiko Epson Corporation
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Quick Facts
Patent No.
US 7,492,337
App. No.
11/023,352
Granted
Feb 17, 2009
Kind
B2
Abstract

To provide an electro-optical device which has the high degree of freedom with regard to changes in the area of a pixel region, and which can adjust brightness or a life span between light-emitting elements, easily control the white balance, and lengthen the life span of the overall display device. A top emission type of electro-optical device comprises first wiring lines, second wiring lines substantially orthogonal to the first wiring lines, and pixel regions selected by the first and second wiring lines. The electro-optical device has a plurality of pixel regions, and at least one of the pixel regions is provided so as to exceed a unit region surrounded by one of the first wiring lines and one of the second wiring lines, which select the at least one pixel region, and another of the first wiring lines and another of the second wiring lines respectively adjacent to one of the first wiring lines and one of the second wiring lines.

Claims (40)

1. An electro-optical device comprising:

first wiring lines;

second wiring lines substantially orthogonal to the first wiring lines;

a plurality of pixel regions including a first pixel region and a second pixel region, one of the pixel regions selected by one of the first wiring lines and one of the second wiring lines;

light-emitting elements included in the pixel regions, which are provided on a substrate;

a first electrode;

second electrodes made of a transparent material;

a light-emitting layer interposed between the first electrode and one of the second electrodes,

light emitted from the light-emitting layer being radiated in a direction opposite to the substrate via the one of the second electrodes;

unit regions respectively surrounded by two of the first wiring lines that are adjacent to each other and two of the second wiring lines that are adjacent to each other, the unit regions including a first unit region, a second unit region and a third unit region, the first unit region being adjacent to the second unit region; and

an intervening wiring line intervening between the first unit region and the second unit region, the intervening wiring line being either one of the first wiring lines or one of the second wiring lines that defines the first unit region,

wherein the first pixel region is provided in both the first unit region and the second unit region so as to cross the intervening wiring, and

wherein the second pixel region is provided only within the second unit region.

2. An electronic apparatus comprising an electro-optical device as claimed in claim 1 .

3. An electro-optical device comprising:

first wiring lines;

second wiring lines substantially orthogonal to the first wiring lines;

a plurality of pixel regions including a first pixel region and a second pixel region, one of the pixel regions selected by one of the first wiring lines and one of the second wiring lines;

light-emitting elements included in the pixel regions, which are provided on a substrate;

a first electrode;

second electrodes made of a transparent material;

a light-emitting layer interposed between the first electrode and one of the second electrodes,

light emitted from the light-emitting layer being radiated in a direction opposite to the substrate via the one of the second electrodes;

unit regions respectively surrounded by two of the first wiring lines that are adjacent to each other and two of the second wiring lines that are adjacent to each other, the unit regions including a first unit region, a second unit region and a third unit region, the first unit region being adjacent to the second unit region; and

an intervening wiring line intervening between the first unit region and the second unit region, the intervening wiring line being either one of the first wiring lines or one of the second wiring lines that defines the first unit region,

wherein basic pixels are constructed by the plurality of pixel regions that includes the first pixel region and the second pixel region, and the first region of each basic pixel being provided in both the first unit region and the second unit region so as to cross the intervening wiring line, and

wherein the second pixel region of each basic pixel is provided only within the second unit region.

4. The electro-optical device according to claim 3 ,

wherein the total area of each basic pixel does not exceed the total area of the unit regions which have the same total number of pixel regions as that of the basic pixel.

5. The electro-optical device according to claim 3 ,

wherein the first and/or second wiring lines are arranged at substantially equal intervals, and

in each basic pixel, the area of each pixel region is set according to the characteristics of the light-emitting element.

6. The electro-optical device according to claim 3 ,

wherein in each basic pixel, the area of the pixel region increases when the pixel region includes a light-emitting element having low light-emitting efficiency.

7. The electro-optical device according to claim 3 ,

wherein in each basic pixel, the area of the pixel region increases when the pixel region includes a light-emitting element having a short life span.

8. The electro-optical device according to claim 3 ,

wherein when light components emitted from the respective pixel regions constituting each basic pixel are synthesized to display white light, the area of the pixel region increases when the pixel region includes a light-emitting element emitting a color light component which needs a large quantity of light.

9. The electro-optical device according to claim 3 ,

wherein when light components emitted from the respective pixel regions constituting each basic pixel are synthesized to display white light, the area of the pixel region increases when the pixel region includes a light-emitting element having a high ratio of necessary quantity of light to light-emitting efficiency.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 12, 2023
From: SEIKO EPSON CORPORATION
To: LUMITEK DISPLAY TECHNOLOGY LIMITED
Reel/Frame 065221/0372 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 29, 2004
From: FUKASE, AKIO
To: SEIKO EPSON CORPORATION
Reel/Frame 016137/0147 →
Priority Claims (2)
JP 2004-002286 · Jan 7, 2004 · national
JP 2004-330055 · Nov 15, 2004 · national
Continuity (1)
Related Publication 20050156515A1 · Jul 21, 2005