IP Library Granted Patent US 9,871,091
Granted Patent B2
US 9,871,091 · App. 15/423,195 · Granted Jan 16, 2018

Electro-optical device and electronic apparatus

Inventors: Takeshi Koshihara (Matsumoto, JP); Hitoshi Ota (Shiojiri, JP); Ryoichi Nozawa (Tatsuno-machi, JP)
Assignee: SEIKO EPSON CORPORATION
H01L27/3276H01L27/3218H01L27/3262
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Quick Facts
Patent No.
US 9,871,091
App. No.
15/423,195
Granted
Jan 16, 2018
Kind
B2
Abstract

Subpixels of R, G, and B corresponding to a scanning line extended in a row direction and a data transfer line extended in a column direction are provided. A plurality of transistors in the subpixel of each of the colors is disposed along the column direction, and a reflective layer in the subpixel of at least one color is disposed along the row direction so as to overlap any transistor of subpixels of each display color. A power source wiring is disposed between the reflective layer and the transistor along the row direction, so as to overlap the transistor. Relay electrodes which connects the reflective layer and any transistor of subpixels of each display color are formed on a layer between a layer on which the power source wiring is formed, and the reflective layer.

Claims (50)

1. An electro-optical device comprising:

a plurality of first conductive layers each of which is extended in a first direction;

a plurality of second conductive layers each of which is extended in a second direction which intersects with the first direction; and

a plurality of subpixels each of which is arranged to corresponding intersection between the plurality of first conductive layers and the plurality of second conductive layers, each of the plurality of subpixels comprising:

a third conductive layer of a light emitting element;

a plurality of transistors;

a fourth conductive layer which is disposed so as to overlap at least one transistor of the plurality of transistors; and

a fifth conductive layer which is electrically connected to at least one transistor of the plurality of transistors, and is disposed on a layer between the third conductive layer and the fourth conductive layer,

wherein the plurality of transistors is disposed in a pixel circuit region of which a width in the first direction is narrower than a width in the second direction,

one conductive layer among the plurality of first conductive layers is electrically connected to transistors which are at least one of the plurality of transistors included in each of two subpixels which are adjacent to each other in the first direction among the plurality of subpixels, and

the third conductive layer of at least one subpixel of the plurality of subpixels has a width in the first direction, which is wider than a width in the second direction, and overlaps the fourth conductive layer and at least one transistor of the plurality of transistors in the at least one subpixel.

2. The electro-optical device according to claim 1 , wherein

the plurality of first conductive layers is scanning lines.

3. The electro-optical device according to claim 1 , wherein

a transistor which overlaps the third conductive layer and the fourth conductive layer among the plurality of transistors is a drive transistor.

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

the fourth conductive layer is a power source wiring which is connected to the drive transistor.

5. The electro-optical device according to claim 1 , wherein

the fourth conductive layer is a power source wiring which is extended in the first direction.

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

areas of third conductive layers in at least two subpixels of the plurality of subpixels are different from each other, and

the fifth conductive layer in each of the at least two subpixels is disposed so as to overlap the third conductive layer having a smallest area among the third conductive layers in the at least two subpixels.

7. The electro-optical device according to claim 1 , wherein

a connection portion in one subpixel of the plurality of subpixels electrically connects the fifth conductive layer in the one subpixel to at least one transistor of the plurality of transistors in the one subpixel, the connection portion is positioned between the third conductive layer in the one subpixel and a third conductive layer in another subpixel which is adjacent to the one subpixel in the first direction.

8. The electro-optical device according to claim 6 , wherein

each of connection portions in the at least two subpixels electrically connects the fifth conductive layer to corresponding at least one transistor of the plurality of transistors, the connection portions are positioned on a centerline of the third conductive layer having the smallest area, in the first direction.

9. The electro-optical device according to claim 6 , wherein

each of connection portions in the at least two subpixels electrically connects the fifth conductive layer to corresponding at least one transistor of the plurality of transistors, the connection portions are disposed so as to overlap the third conductive layer having the smallest area, in a plan view.

10. The electro-optical device according to claim 1 , wherein

a connection portion in one subpixel of the plurality of subpixels electrically connects the fifth conductive layer in the one subpixel to at least one transistor of the plurality of transistors in the one subpixel, the connection portion is positioned at a location other than an end portion of the plurality of transistors in the one subpixel in the second direction.

11. The electro-optical device according to claim 1 , wherein

the fifth conductive layer in one subpixel of the plurality of subpixels is formed on the same layer as the plurality of second conductive layers, the fifth conductive layer in the one subpixel is positioned between one second conductive layer which corresponds to the one subpixel and another second conductive layer which corresponds to other subpixel adjacent to the one subpixel in the first direction.

12. The electro-optical device according to claim 1 , wherein

the fifth conductive layer is formed on a layer which is different from the plurality of second conductive layers.

13. The electro-optical device according to claim 1 , wherein

subpixels of the plurality of subpixels which are adjacent to each other in the first direction, and have different display colors is set as one pixel unit.

14. An electronic apparatus comprising:

the electro-optical device according to claim 1 .

15. An electronic apparatus comprising:

the electro-optical device according to claim 2 .

16. An electronic apparatus comprising:

the electro-optical device according to claim 3 .

17. An electronic apparatus comprising:

the electro-optical device according to claim 4 .

18. An electronic apparatus comprising:

the electro-optical device according to claim 5 .

19. An electronic apparatus comprising:

the electro-optical device according to claim 6 .

20. An electronic apparatus comprising:

the electro-optical device according to claim 7 .

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 Feb 2, 2017
From: KOSHIHARA, TAKESHI; OTA, HITOSHI; NOZAWA, RYOICHI
To: SEIKO EPSON CORPORATION
Reel/Frame 041161/0408 →
Priority Claims (1)
JP 2016-026379 · Feb 15, 2016 · national
Continuity (1)
Related Publication 20170236891A1 · Aug 17, 2017