Electro-optical device, method of manufacturing electro-optical device, and electronic apparatus

• US 20060193170A1
• Filed: 02/07/2006
• Published: 08/31/2006
• Est. Priority Date: 02/17/2005
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Murade, Masao
• Granted Patent: US 7,615,810 B2
• Time in Patent Office: Days
• US Class Current: 365/185.03
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

An electro-optical device includes first and second substrates that are bonded to each other, the first substrate having an extended portion extended from the second substrate on a first side thereof in plan view, a plurality of pixel units that are disposed in a pixel region on the first substrate and individually have pixel electrodes, a data line driving circuit that is disposed along the first side in a peripheral region around the pixel region so as to supply an image signal to the pixel units, a plurality of external circuit connecting terminals that are arranged along the first side in a region of the peripheral region on the extended portion, an image signal line that is relayed around the data line driving circuit from the plurality of external circuit connecting terminals and has a first wiring line portion wired in a direction along the first side between the data line driving circuit and the pixel region, and a sealant that bonds the first and second substrates to each other in a sealing region around the pixel region. Each of the first wiring line portions is at least partially wired within the sealing region.

Claims

1. An electro-optical device comprising:

first and second substrates that are bonded to each other, the first substrate having an extended portion extended from the second substrate on a first side thereof in plan view;

a plurality of pixel units that are arranged in a pixel region on the first substrate and individually have pixel electrodes;

a data line driving circuit that is disposed along the first side in a peripheral region around the pixel region so as.to supply an image signal to the pixel units;

a plurality of external circuit connecting terminals that are arranged along the first side in a region of the peripheral region on the extended portion;

an image signal line that is relayed around the data line driving circuit from the plurality of external circuit connecting terminals,

the image signal line having a first wiring line portion that extends between the data line driving circuit and the pixel region in a direction following the first side; and

a sealant that bonds the first and second substrates to each other in a sealing region around the pixel region,

wherein the first wiring line portion is at least partially wired within the sealing region.

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

wherein the image signal is a plurality of image signals subjected to serial-to-parallel conversion, and the first wiring line portion is a plurality of first wiring line portions for supplying the plurality of image signals, and

the plurality of first wiring line portions are individually disposed within the sealing region.

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

wherein the image signal is a plurality of image signals subjected to serial-to-parallel conversion, and the first wiring line portion is a plurality of first wiring line portions for supplying the plurality of image signals, and

the plurality of first wiring line portions are disposed such that parts thereof have the same area within the same area.

4. The electro-optical device according to claim 1,

wherein the image signal line has a lead wiring line portion that is led from the first wiring line portion toward the pixel region, and

the lead wiring line portion is at least partially disposed within the sealing region.

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

a counter electrode that is formed on the second substrate to commonly face the pixel electrodes individually provided in the plurality of pixel units and is cut in a region facing the first wiring line portion.

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

wherein the image signal is a plurality of image signals subjected to serial-to-parallel conversion, and the first wiring line portion is a plurality of first wiring line portions for supplying the plurality of image signals, and

the counter electrode is cut so as not to partially face the regions facing the plurality of first wiring line portions and such that parts thereof facing the plurality of first wiring line portions have the same area.

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

a vertical connecting terminal that is provided on the first substrate so as to supply a counter electrode potential to the counter electrode, the counter electrode extending to a region facing the vertical connecting terminal aside the cut portion; and

a vertical connecting material that electrically connects the vertical connecting terminal and the extended portion of the counter electrode to each other.

8. The electro-optical device according to claim 1,

wherein gap materials are mixed in the sealant so as to define a gap between the first and second substrates, and a planarization treatment is performed on a film disposed above the first wiring line portion on the first substrate.

9. The electro-optical device according to claim 8, further comprising:

a sampling circuit that is provided on the first substrate to sample the image signal supplied through the image signal line according to a sampling circuit driving signal to be supplied from the data line driving circuit and to supply the sampled image signal to data lines,

wherein the data line driving circuit is disposed in a region of the peripheral region farther from the pixel region than from the sealing region, and

the sampling circuit is disposed in a region of the peripheral region closer to the pixel region than to the sealing region.

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

11. A method of manufacturing an electro-optical device, in which first and second substrates are bonded to each other, and the first substrate has an extended portion from the second substrate on a first side thereof in plan view, the method comprising:

forming a plurality of pixel units that are arranged in a pixel region on the first substrate and have individually pixel electrodes, a scanning line driving circuit that is disposed along at least one second side adjacent to the first side of the first substrate in a peripheral region around the pixel region so as to drive the pixel units through scanning lines, a data line driving circuit that is disposed along the first side in the peripheral region so as to drive the pixel units through data lines, a plurality of external circuit connecting terminals that are arranged along the first side in a region of the peripheral region on the extended portion, and a plurality of lead wiring lines including an image signal line that is relayed from the plurality of external circuit connecting terminals and has a first wiring line portion wired in a direction along the first side between the data line driving circuit and the pixel region on the first substrate in plan view; and

bonding the first and second substrates to each other by a sealant in a sealing region of the peripheral region around the pixel region,

wherein, in the forming of a plurality of pixel units, the first wiring line portion is at least partially formed within the sealing region.