IP Library Granted Patent US 10,216,044
Granted Patent B2
US 10,216,044 · App. 14/938,548 · Granted Feb 26, 2019

Liquid crystal device and electronic apparatus

Inventor: Osamu Nakajima (Suwa, JP)
Assignee: Seiko Epson Corporation
G02F1/1339G02F1/13452G02F1/133345G02F2201/50
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Quick Facts
Patent No.
US 10,216,044
App. No.
14/938,548
Granted
Feb 26, 2019
Kind
B2
Abstract

In a first substrate of a liquid crystal device, among wiring lines extending to a non-display area interposed between a display area and an outer edge of a seal material, common potential lines are provided to interpose an interlayer insulating film between pixel electrodes. In contrast, the wiring lines which supply potentials different from common potentials is provided so as to interpose interlayer insulating films between the pixel electrodes. In the common potential lines, second wiring line sections extend so as to surround an entire circumference of the display area in the non-display area.

Claims (48)

1. A liquid crystal device comprising:

a first substrate including

a display area in which pixel electrodes are disposed, and

a non-display area which is disposed to surround the display area;

a second substrate in which at least one common electrode facing the pixel electrodes is disposed;

a seal material which is between the first substrate and the second substrate and which is disposed to surround the display area and the non-display area;

a liquid crystal layer disposed inside an area surrounded by the seal material;

a plurality of wiring lines disposed in the non-display area inside the area surrounded by the seal material; and

a substrate conducting portion which is disposed outside the area surrounded by the seal material, and which brings conduction between conducting electrodes of the first substrate and conducting electrodes of the second substrate,

wherein

the plurality of wiring lines includes a common potential line to which a common potential applied to the common electrode is supplied by an external control circuit that supplies electrical potentials to the liquid crystal device and other wiring lines to which potentials other than the common potential are supplied by the external control circuit,

the first substrate includes a first conductive layer, a second conductive layer, and a third conductive layer, from a side close to the liquid crystal layer,

the pixel electrode is disposed in the first conductive layer,

the common potential line is disposed in the second conductive layer,

the other wiring lines are disposed at positions farther from the liquid crystal layer than the common potential line in the non-display area, and

at least two insulating layers are disposed between the common potential line and the other wiring lines.

2. The liquid crystal device according to claim 1 ,

wherein the first substrate includes

a first insulating layer which is disposed between the first conductive layer and the second conductive layer, and

a second insulating layer which is disposed between the second conductive layer and the third conductive layer, and

the common potential line is connected to the conducting electrodes between the substrates of the first substrate.

3. The liquid crystal device according to claim 1 ,

wherein the first substrate includes

a first insulating layer which is disposed between the first conductive layer and the second conductive layer, and

a second insulating layer which is disposed between the second conductive layer and the third conductive layer, and

in the non-display area inside the area surrounded by the seal material, only the common potential line is disposed in the second conductive layer.

4. The liquid crystal device according to claim 1 ,

wherein the common potential line extends along the display area in the non-display area inside the area surrounded by the seal material.

5. The liquid crystal device according to claim 4 ,

wherein the common potential line extends so as to surround an entire circumference of the display area in the non-display area inside the area surrounded by the seal material.

6. The liquid crystal device according to claim 1 ,

wherein the second conductive layer has light shielding properties.

7. The liquid crystal device according to claim 1 ,

wherein the second conductive layer and the third conductive layer have light shielding properties.

8. The liquid crystal device according to claim 6 ,

wherein the second conductive layer is formed of a material including aluminum.

9. The liquid crystal device according to claim 7 ,

wherein the second conductive layer and the third conductive layer are formed of a material including aluminum.

10. An electronic apparatus comprising:

the liquid crystal device according to claim 1 .

11. The liquid crystal device according to claim 1 ,

wherein

a plurality of potentials other than the common potential are supplied to the other wiring lines, and

at least one potential of the plurality of potentials is different from another potential of the plurality of potentials.

12. The liquid crystal device according to claim 1 ,

wherein

each of the plurality of wiring lines is connected to at least one of a plurality of connecting terminals arranged on the first substrate, and

the common potential is supplied to the plurality of wiring lines through the connecting terminals.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 11, 2015
From: NAKAJIMA, OSAMU
To: SEIKO EPSON CORPORATION
Reel/Frame 037016/0524 →
Priority Claims (1)
JP 2014-236282 · Nov 21, 2014 · national
Continuity (1)
Related Publication 20160147121A1 · May 26, 2016