Electro-optical device, wiring board, and electronic apparatus

• US 7,561,230 B2
• Filed: 08/08/2006
• Issued: 07/14/2009
• Est. Priority Date: 08/11/2005
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Yoshii, Masahito
• Primary Examiner(s): Font; Frank G
• Assistant Examiner(s): Radkowski; Peter
• Application Number:
  US11/500,668
• Publication Number:
  US 20070035683A1
• Time in Patent Office: 1,071 Days
• Field of Search: 349/56, 349/84, 349/104, 349/110, 349/111, 349/113, 349/114, 349/122
• US Class Current: 349/110
• CPC Class Codes: G02F 1/136209 Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
• CPC Class Codes: G02F 2201/50 Protective arrangements

Abstract

An electro-optical device includes a substrate; a plurality of pixels that are formed in an image display region on the substrate; a plurality of light-shielding films that are formed as island shapes in peripheral regions around the image display region; separation regions that extend in a first direction between the plurality of light-shielding films; an insulating film that covers the plurality of light-shielding films and the separation regions; and a plurality of first conductive films that are formed so as to extend in the first direction and disposed in a direction crossing the first direction, on the insulating film. Further, the plurality of first conductive films overlap the separation regions that extend between the plurality of light-shielding films.

Claims

1. An electro-optical device comprising:

a substrate;

a plurality of pixels that are formed in an image display region on the substrate;

a plurality of light-shielding films that are formed as island shapes in a peripheral region outside of the image display region, the light-shielding films including;

a pair of first direction light-shielding films that are adjacent to each other in a first direction and that are separated from each other in the first direction by a first direction separation region and

a pair of second direction light-shielding films that are adjacent to each other in a second direction and that are separated from each other in the second direction by a second direction separation region;

an insulating film that covers the plurality of light-shielding films and the first and second separation regions; and

a plurality of first conductive films that are formed so as to extend in the first direction and disposed in the second direction, wherein one of the plurality of first conductive films overlaps the first separation region between the pair of first direction light-shielding films and overlaps the second separation region between the pair of second direction light-shielding films.

2. The electro-optical device according to claim 1, wherein each of the plurality of light-shielding films corresponds to a lower light-shielding film that is formed below a circuit provided in the peripheral region, and the electro-optical device further includes a plurality of second conductive films that are formed on the plurality of first conductive films, at least partially overlap the separation regions extending in the first direction in the regions between the lower light-shielding films, and extend in the second direction.

3. The electro-optical device according to claim 2, wherein the plurality of lower light-shielding films are disposed in a matrix in the peripheral region, and the plurality of first conductive films are disposed at predetermined intervals corresponding to intervals between the plurality of lower light-shielding films in the second direction.

4. The electro-optical device according to claim 1, wherein planar shapes of the first conductive films are symmetrical on the basis of the separation regions in the second direction.

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

a plurality of third conductive films that are formed on different layers from the plurality of first conductive films, that extend in the second direction, and that are disposed in the first direction, wherein lengths of one first conductive film and another first conductive film adjacent to each other among the plurality of first conductive films are different from each other in the first direction, the one first conductive film is electrically connected to one of the plurality of third conductive films through one conductive portion that extends in a direction crossing a surface of the substrate, and another first conductive film is electrically connected to one of the plurality of third conductive films through another conductive portion that extends in the direction crossing the surface of the substrate.

6. The electro-optical device according to claim 5, further comprising:

a plurality of transistors that are electrically connected to the plurality of pixels, each of which has a pixel electrode, wherein the one first conductive film is electrically connected to a gate of one transistor among adjacent transistors in the first direction in the plurality of transistors, and another first conductive film is electrically connected to a gate of another transistor among the adjacent transistors.

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

a counter substrate that is opposite to the substrate and bonded to the substrate by a sealant provided in an outside region of a frame region defining the image display region in the peripheral regions, wherein the counter substrate has upper light-shielding films that are formed in the frame region at a counter surface side opposite to the substrate surface, and the lower light-shielding films are formed in at least the outside region of the peripheral region.

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

9. The electro-optical device according to claim 1, one of the pair of first direction light-shielding films being included in the pair of second direction light-shielding films.

10. The electro-optical device according to claim 1, neither of the pair of first direction light-shielding films being included in the pair of second direction light-shielding films.

11. An electro-optical device comprising:

a substrate;

a plurality of pixels formed in an image display region on the substrate;

light-shielding films located in a peripheral region to the outside of the image display region, the light-shielding films having island shapes;

an insulating film that covers the plurality of light-shielding films; and

conductive films that extend in a first direction and that are juxtaposed in a second direction that crosses the first direction, the conductive films including a pair of adjacent conductive films that are separated from each other in the second direction by a separation region, one of the light-shielding films overlapping the pair of adjacent conductive films and the separation region between the pair of adjacent conductive films.