IP Library Granted Patent US 7,999,897
Granted Patent B2
US 7,999,897 · App. 12/412,561 · Granted Aug 16, 2011

Electro-optic device and electronic apparatus

Assignee: Seiko Epson Corporation
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Quick Facts
Patent No.
US 7,999,897
App. No.
12/412,561
Granted
Aug 16, 2011
Kind
B2
Abstract

An electro-optic device includes first electrodes that apply voltage to the liquid crystal layer in the pixel area and second electrodes that apply voltage to the liquid crystal layer in the peripheral area for shielding the peripheral area from light.

Claims (28)

1. An electro-optic device comprising:

first and second substrates that are disposed to face each other;

a liquid crystal layer that is disposed between the first and second substrates;

a pixel area including a plurality of pixels and a peripheral area around the pixel area;

first electrodes that apply voltage to the liquid crystal layer in the pixel area;

second electrodes that apply voltage to the liquid crystal layer in the peripheral area for shielding the peripheral area from light;

a power supply unit that supplies power source potential to the second electrodes to apply the voltage to the liquid crystal layer;

a seal member surrounding the peripheral area; and

a boundary light shielding film overlapping an inner portion of the peripheral area surrounding the pixel area at a boundary with the pixel area, the boundary light shielding film blocking a portion of light incident upon the peripheral area,

wherein the peripheral area includes an outer portion surrounding the boundary light shielding film between the boundary light shielding film and the seal member that is not overlapped with the boundary light shielding film.

2. An electro-optic device comprising:

first and second substrates that are disposed to face each other;

a liquid crystal layer that is disposed between the first and second substrates;

a pixel area including a plurality of pixels and a peripheral area around the pixel area;

first electrodes that are formed on the first substrate and apply voltage to the liquid crystal layer in the pixel area;

second electrodes that are formed on the first substrate and apply voltage for shielding the peripheral area from light to the liquid crystal layer;

a potential supply unit that supplies potential to the second electrodes to apply the voltage to the liquid crystal layer;

a seal member surrounding the peripheral area; and

a boundary light shielding film overlapping an inner portion of the peripheral area surrounding the pixel area at a boundary with the pixel area, the boundary light shielding film blocking a portion of light incident upon the peripheral area,

wherein the peripheral area includes an outer portion surrounding the boundary light shielding film between the boundary light shielding film and the seal member that is not overlapped with the boundary light shielding film.

3. The electro-optic device according to claim 1 , wherein at least a part of the second electrodes are electrically connected to each other.

4. The electro-optic device according to claim 1 , wherein the seal member is provided to connect the first and second substrates to each other in the peripheral area and is hardened by irradiating with light.

5. The electro-optic device according to claim 1 , wherein the voltage applied to the second electrodes is alternating-current voltage.

6. The electro-optic device according to claim 1 , further comprising dummy pixels that are provided in a dummy pixel area between the pixel area and the peripheral area and are provided with dummy electrodes imitating the first electrodes,

wherein the second electrodes are electrically connected to the dummy electrodes, and

wherein the power supply unit supplies the potential to the second electrodes through the dummy electrodes.

7. The electro-optic device according to claim 1 , wherein the power supply unit includes a power supply circuit provided on the first substrate.

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

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 28, 2019
From: SEIKO EPSON CORPORATION
To: 138 EAST LCD ADVANCEMENTS LIMITED
Reel/Frame 050197/0212 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 27, 2009
From: OYAMADA, SHIN
To: SEIKO EPSON CORPORATION
Reel/Frame 022461/0587 →
Priority Claims (2)
JP 2008-095033 · Apr 1, 2008 · national
JP 2009-039622 · Feb 23, 2009 · national
Continuity (1)
Related Publication 20090244465A1 · Oct 1, 2009