Electro-optical device, projection-type display device, electronic device, and manufacturing method of the electro-optical device

Inventors: Satoshi Ito (Eniwa, JP); Takafumi Egami (Chitose, JP); Hidenori Sokabe (Chitose, JP)

Assignee: Seiko Epson Corporation

G02F1/133345 G02F1/134309 G02F1/136227 G02F1/136213 G02F2001/133357

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Quick Facts

Patent No.: US 9,110,325
App. No.: 13/551,828
Granted: Aug 18, 2015
Kind: B2

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Abstract

In the electro-optical device, a pillar-shaped protrusion is formed on an insulating film (a first insulating film) provided below a pixel electrode in the downward direction, and thus a conduction section of a second electrode layer (a conductive layer) overlaps the highest surface of the pillar-shaped protrusion. An inter-layer insulating film (a second insulating film) is provided between the second electrode layer and the pixel electrode, but the conduction section is exposed on a surface of the inter-layer insulating film. For this reason, the pixel electrode is electrically connected to the conduction section, when the pixel electrode is laminated on the inter-layer insulating film.

Claims (48)

1. An electro-optical device comprising:

a plurality of pixel electrodes provided over one side of a substrate;

a first insulating film provided between the substrate and the plurality of pixel electrodes, the first insulating film having a plurality of protrusions protruding toward the plurality of pixel electrodes, each of the plurality of protrusions corresponding one-to-one with each of the plurality of pixel electrodes, one of the plurality of protrusions overlapping one of the plurality of the pixel electrodes when viewed from above of the one side of the substrate;

a conductive layer provided between the first insulating film and the plurality of pixel electrodes, the conductive layer including a conduction section overlapping one of the plurality of protrusions when viewed from above of the one side of the substrate, the conduction section conducting the conductive layer to the one of the plurality of the pixel electrodes; and

a second insulating film provided between the conductive layer and the plurality of pixel electrodes;

wherein

the plurality of pixel electrodes are laminated on one side of the second insulating film and on one side of the conduction section, and

a surface of the conduction section on the plurality of pixel electrodes side and a surface of the second insulating film on the plurality of pixel electrodes side make up a continuous surface.

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

a capacity electrode layer provided between the conductive layer and the substrate; and

a dielectric layer provided between the capacity electrode layer and the conductive layer;

wherein a storage capacitance is formed by the capacity electrode layer, the dielectric layer, and the conductive layer.

3. The electro-optical device according to claim 2 , wherein the first insulating film is provided between the capacity electrode layer and the conductive layer, and an opening is provided in an area where the capacity electrode layer and the conductive layer overlap each other when viewed from above of the one side of the substrate.

4. The electro-optical device according to claim 3 , wherein the conductive layer and capacity electrode layer are provided in an area that overlaps an area between one of the plurality of pixel electrodes and another one of plurality of pixel electrodes that is adjacent to the one of the plurality of pixel electrodes when viewed from above of the one side of the substrate.

5. The electro-optical device according to claim 2 , wherein the plurality of protrusions are provided in a position that overlaps the capacity electrode layer when viewed from above of the one side of the substrate.

6. The electro-optical device according to claim 1 , wherein a liquid crystal layer is provided between the substrate and an opposite substrate that is disposed opposite to the substrate.

7. A projection-type display device comprising:

the electro-optical device according to claim 1 ;