IP Library › Granted Patent US 9,208,708
Granted Patent B2
US 9,208,708 · App. 13/826,834 · Granted Dec 8, 2015

Electro-optical device and electronic apparatus

Inventors: Kazuma Kitadani (Chino, JP); Takeshi Nomura (Shiojiri, JP); Hitoshi Ota (Shiojiri, JP)
Assignee: SEIKO EPSON CORPORATION
G09G3/001G09G3/3225H01L27/3265H01L27/3276G09G2300/0426G09G2300/0838G09G2310/0251G09G2320/0233G09G2320/045
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Quick Facts
Patent No.
US 9,208,708
App. No.
13/826,834
Granted
Dec 8, 2015
Kind
B2
Abstract

An electro-optical device includes a first pixel circuit provided so as to correspond to a first data line, a second pixel circuit provided so as to correspond to a second data line, a first storage capacitor of which one end is connected to the first data line and the other end is potential-shifted according to a current to be supplied to a light emitting element of the first pixel circuit, a second storage capacitor of which one end is connected to the second data line and the other end is potential-shifted according to a current to be supplied to a light emitting element of the second pixel circuit, and a constant potential line provided between the first storage capacitor and the second storage capacitor in plan view.

Claims (39)

1. An electro-optical device comprising:

a plurality of data lines;

a first pixel circuit provided so as to correspond to a first data line among the plurality of data lines;

a second pixel circuit provided so as to correspond to a second data line among the plurality of data lines, each of the first pixel circuit and the second pixel circuit including a light emitting element and a driving transistor that supplies a current corresponding to a gate-source voltage to the light emitting element;

a first storage capacitor of which one end is connected to the first data line and the other end is configured that a potential of the other end is able to be shifted according to a current to be supplied to the light emitting element of the first pixel circuit, wherein the first storage capacitor is located separate from the first pixel circuit;

a second storage capacitor of which one end is connected to the second data line and the other end is configured that a potential of the other end is able to be shifted according to a current to be supplied to the light emitting element of the second pixel circuit; and

a constant potential line provided between the first storage capacitor and the second storage capacitor in plan view,

wherein one end of the first storage capacitor and one end of the second storage capacitor are formed of one of a first conductive layer and a second conductive layer,

wherein the other end of the first storage capacitor and the other end of the second storage capacitor are formed of the other of the first conductive layer and the second conductive layer, and

wherein the constant potential line is formed of at least a wire of the first conductive layer and a wire of the second conductive layer.

2. The electro-optical device according to claim 1 , wherein the wire of the first conductive layer and the wire of the second conductive layer of the constant potential line are electrically connected to each other.

3. The electro-optical device according to claim 1 , wherein the light emitting element is a two-terminal element,

wherein the light emitting element and the driving transistor are electrically connected in series between two different power supply potentials,

wherein, of the two terminals of the light emitting element, a potential of the terminal on the driving transistor side becomes a predetermined reset potential after a current is supplied by the driving transistor, and

wherein the reset potential is supplied to the constant potential line.

4. The electro-optical device according to claim 1 , wherein the light emitting element and the driving transistor are electrically connected in series between two different power supply potentials, and

wherein one of the two different power supply potentials is supplied to the constant potential line.

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

6. An electronic apparatus comprising the electro-optical device according to claim 2 .

7. An electronic apparatus comprising the electro-optical device according to claim 3 .

8. An electronic apparatus comprising the electro-optical device according to claim 4 .

9. An electro-optical device comprising:

a plurality of data lines;

a first pixel circuit provided so as to correspond to a first data line among the plurality of data lines;

a second pixel circuit provided so as to correspond to a second data line among the plurality of data lines, each of the first pixel circuit and the second pixel circuit including a light emitting element and a driving transistor that supplies a current corresponding to a gate-source voltage to the light emitting element;

a first storage capacitor of which one end is connected to the first data line and the other end is configured that a potential of the other end is able to be shifted according to a current to be supplied to the light emitting element of the first pixel circuit;

a second storage capacitor of which one end is connected to the second data line and the other end is configured that a potential of the other end is able to be shifted according to a current to be supplied to the light emitting element of the second pixel circuit; and

a constant potential line provided between the first storage capacitor and the second storage capacitor in plan view,

wherein one end of the first storage capacitor and one end of the second storage capacitor are formed of one of a first conductive layer and a second conductive layer,

wherein the other end of the first storage capacitor and the other end of the second storage capacitor are formed of the other of the first conductive layer and the second conductive layer, and

wherein the constant potential line is formed of at least a wire of the first conductive layer and a wire of the second conductive layer.

10. The electro-optical device according to claim 9 , wherein the wire of the first conductive layer and the wire of the second conductive layer of the constant potential line are electrically connected to each other.

11. The electro-optical device according to claim 9 , wherein the light emitting element is a two-terminal element,

wherein the light emitting element and the driving transistor are electrically connected in series between two different power supply potentials,

wherein, of the two terminals of the light emitting element, a potential of the terminal on the driving transistor side becomes a predetermined reset potential after a current is supplied by the driving transistor, and

wherein the reset potential is supplied to the constant potential line.

12. The electro-optical device according to claim 9 , wherein the light emitting element and the driving transistor are electrically connected in series between two different power supply potentials, and

wherein one of the two different power supply potentials is supplied to the constant potential line.

13. An electronic apparatus comprising the electro-optical device according to claim 9 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 14, 2013
From: KITADANI, KAZUMA; NOMURA, TAKESHI; OTA, HITOSHI
To: SEIKO EPSON CORPORATION
Reel/Frame 030035/0158 →
Priority Claims (1)
JP 2012-099990 · Apr 25, 2012 · national
Continuity (1)
Related Publication 20130286054A1 · Oct 31, 2013