Electro-optical device and electronic apparatus

Patent metadata

Field	Value
Publication number	US-9953572-B2
Application number	US-201615267975-A
Country	US
Kind code	B2
Filing date	Sep 16, 2016
Priority date	Mar 10, 2011
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

An electro-optical device includes a scanning line, a data line intersecting with each other, a pixel circuit which is provided corresponding to the intersection thereof, and a wire. The pixel circuit includes a light emitting element, one transistor which controls a current flowing to the light emitting element, and the other transistor of which conduction state is controlled according to a scanning signal which is supplied to the scanning line between a gate node of the one transistor and the data line. The wire is provided between the data line and the one transistor.

First claim

What is claimed is:

1. An electro-optical device comprising:
a scanning line that extends in a first direction;
a data line;
a shield wire;
a light emitting element;
a first transistor that controls a current flowing through the light emitting element;
a second transistor of which conduction state is controlled according to a scanning signal which is supplied through the scanning line,

wherein
the data line extends in a second direction different from the first direction and has an extended portion that extends in the first direction,
the second transistor is electrically connected between a gate electrode layer and the extended portion,
the first transistor has a gate electrode that is a portion of the gate electrode layer where a channel of the first transistor overlaps with,
the shield wire is disposed between, in the second direction, the gate electrode of the first transistor and the extended portion in plan view, and
in a thickness direction perpendicular to both the first direction and the second direction, the shield wire is disposed in a layer between a layer in which the data line is disposed and the gate electrode layer.

2. The electro-optical device according to claim 1 ,
wherein the shield wire is disposed between the gate of the first transistor and a gate of the second transistor in plan view.

3. An electronic apparatus comprising an electro-optical device according claim 2 .

4. The electro-optical device according to claim 1 ,
wherein a part of the gate electrode layer constitutes an electrode of a capacitor, and
wherein the capacitor is electrically connected to the gate electrode of the first transistor.

5. The electro-optical device according to claim 4 , wherein the shield wire overlaps at least part of the capacitor in plan view.

6. An electronic apparatus comprising an electro-optical device according claim 5 .

7. An electronic apparatus comprising an electro-optical device according claim 4 .

8. The electro-optical device according to claim 1 , further comprising:
a first insulating film covering the gate electrode of the first transistor;
a second insulating film covering the first insulating film;
a first relay electrode disposed between the first insulating film and the second insulating film,

wherein the extended portion of the data line is disposed on the second insulating film,
wherein the shield wire is disposed between the first insulating film and the second insulating film, and
wherein the extended portion of the data line is connected to the second transistor through the first relay electrode.

9. The electro-optical device according to claim 8 ,
wherein the first relay electrode is disposed so that the first relay electrode does not overlap the shield wire.

10. An electronic apparatus comprising an electro-optical device according claim 9 .

11. The electro-optical device according to claim 8 , further comprising:
a second relay electrode connected to the second transistor;
a first connection potion connected between the first relay electrode and the second relay electrode; and
a second connection potion connected between the first relay electrode and the extended portion of the data line,
wherein the first connection potion overlaps the second connection potion in plan view.

12. An electronic apparatus comprising an electro-optical device according claim 11 .

13. An electronic apparatus comprising an electro-optical device according claim 8 .

14. The electro-optical device according to claim 1 ,
wherein the shield wire overlaps at least part of the first transistor in plan view.

15. An electronic apparatus comprising an electro-optical device according claim 14 .

16. An electronic apparatus comprising an electro-optical device according claim 1 .

17. The electro-optical device according to claim 1 , wherein
the shield wire is configured to function as a power line.

Assignees

• Seiko Epson Corp

Inventors

• Fujita Shin

Classifications

• G09G2320/0209

  Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2300/043

  Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver · CPC title

• G09G3/3233 Primary

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2330/06

  Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation · CPC title