Electro-optical device and electronic apparatus

• US 8,803,867 B2
• Filed: 09/13/2012
• Issued: 08/12/2014
• Est. Priority Date: 09/28/2011
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Oikawa, Hiroyuki
• Primary Examiner(s): Nguyen, Kevin M
• Application Number:
  US13/614,422
• Publication Number:
  US 20130076717A1
• Time in Patent Office: 698 Days
• Field of Search: 345/211
• US Class Current: 345/211
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13454 Drivers integrated on the active matrix substrate G02F1/136277 takes precedence
• CPC Class Codes: G02F 1/13456 Cell terminals located on one side of the display only
• CPC Class Codes: G09G 2330/04 Display protection
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

A liquid crystal device includes a scanning line driving circuit, a data line driving circuit, a first VDD power supply wiring line that supplies power to the data line driving circuit, a second VDD power supply wiring line that supplies power to the scanning line driving circuit, and a common wiring line that electrically connects the first VDD power supply wiring line and the second VDD power supply wiring line to each other in an integrated manner. The common wiring line includes electrical conductors, a wiring line, and contact holes.

Claims

1. An electro-optical device comprising:

a data line driving circuit;

a scanning line driving circuit;

a first power supply wiring that supplies power to the data line driving circuit;

a second power supply wiring that supplies power to the scanning line driving circuit;

a wiring that electrically connects the first power supply wiring and the second power supply wiring line;

a first electrical conductor that electrically connects the first power supply wiring and the wiring; and

a second electrical conductor that electrically connects the second power supply wiring and the wiring.

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

a first insulating film that is provided between a first layer and the second layer, the first layer being a layer of the first power supply wiring and the second power supply wiring, the second layer being a layer of the first electrical conductor and the second electrical conductor; and

a second insulating film that is provided between the second layer and a layer of the wiring,

the first electrical conductor and the second electrical conductor being provided between the first layer and the layer of the wiring.

3. The electro-optical device according to claim 1, the first power supply wiring and the first electrical conductor being connected via a first contact hole that opens the first insulating film, the second power supply wiring and the second electrical conductor being connected via a second contact hole that opens the first insulating film, and the first electrical conductor and the second electrical conductor being connected to the wiring via a third contact hole and a fourth contact hole that open the second insulating film.

4. The electro-optical device according to claim 3, connection resistance of the third contact hole being higher than connection resistance of the first contact hole.

5. The electro-optical device according to claim 1, a layer of a gate electrode being the second layer.

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

a plurality of transistors, one of the plurality of transistors being provided so as to correspond to one of a plurality of pixel portions; and

a light shielding film that shields the one of the plurality transistors from light,

a layer of the wiring being a layer of the light shielding film.

7. The electro-optical device according to claim 1, a first layer of the first power supply wiring and the second power supply wiring being a layer of a data line.

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

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

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

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

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

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

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