IP Library Granted Patent US 7,551,253
Granted Patent B2
US 7,551,253 · App. 11/882,834 · Granted Jun 23, 2009

Liquid crystal device, method for manufacturing the same, and electronic apparatus

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Quick Facts
Patent No.
US 7,551,253
App. No.
11/882,834
Granted
Jun 23, 2009
Kind
B2
Abstract

A liquid crystal device includes a first substrate and a second substrate facing each other and sandwiching a liquid crystal layer therebetween, a first electrode disposed on the first substrate at a side thereof proximate to the liquid crystal layer, a second electrode disposed above the first electrode with an insulating film therebetween, and an orientation film covering the insulating film and the second electrode. The second electrode includes a plurality of strip electrode segments each extending along the first and second substrates and having a connected end at one end of the strip electrode segment and an open end at the other end of the strip electrode segment, a connecting segment connecting the connected ends of the plurality of strip electrode segments together. The orientation film is given a rubbing treatment in a direction from the connected ends towards the open ends of the strip electrode segments.

Claims (19)

1. A liquid crystal device, comprising:

a first substrate and a second substrate facing each other and sandwiching a liquid crystal layer therebetween;

a first electrode disposed on the first substrate at a side thereof proximate to the liquid crystal layer;

a second electrode disposed above the first electrode with an insulating film therebetween; and

an orientation film covering the insulating film and the second electrode,

wherein the second electrode includes

a plurality of strip electrode segments each extending along the first and second substrates and having a connected end at one end of the strip electrode segment and an open end at the other end of the strip electrode segment,

a connecting segment connecting the connected ends of the plurality of strip electrode segments together, and

wherein the orientation film is given a rubbing treatment in a direction from the connected ends towards the open ends of the strip electrode segments.

2. The liquid crystal device according to claim 1 , wherein a surface of the liquid crystal layer side of the second electrode and a surface of the liquid crystal layer side of the insulating film have a step therebetween, and wherein the orientation film has an incline conforming to the step.

3. The liquid crystal device according to claim 1 , wherein the plurality of strip electrode segments of the second electrode comprises a first strip electrode group and a second strip electrode group that are disposed in line symmetry in plan view.

4. The liquid crystal device according to claim 1 , wherein the plurality of strip electrode segments of the second electrode comprises a first strip electrode group and a second strip electrode group that are disposed line symmetrically with respect to a symmetry axis in plan view, and

wherein the direction of the rubbing treatment on the orientation film is parallel to the symmetry axis.

5. The liquid crystal device according to claim 1 , wherein a light shielding film is disposed so as to overlap at least a part of the connecting segment.

6. A method for manufacturing a liquid crystal device including a first substrate and a second substrate facing each other and sandwiching a liquid crystal layer therebetween, a first electrode disposed on the first substrate at a side thereof proximate to the liquid crystal layer, a second electrode disposed above the first electrode with an insulating film therebetween, and an orientation film covering the insulating film and the second electrode, the method comprising:

forming a second electrode including a plurality of strip electrode segments each extending along the first and second substrates and having a connected end at one end of the strip electrode segment and an open end at the other end of the strip electrode segment, and a connecting segment connecting the connected ends of the plurality of strip electrode segments, and

performing rubbing on the orientation film in a direction from the connected ends towards the open ends of the strip electrode segments.

7. The method for manufacturing the liquid crystal device according to claim 6 , wherein a moving direction of the first substrate and a rotating direction of a rubbing roll used for the rubbing are the same at a contact point between the first substrate and the rubbing roll.

8. An electronic apparatus comprising the liquid crystal device according to claim 1 .

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072398/0001 →
MERGER AND CHANGE OF NAME Recorded Jul 24, 2025
From: JAPAN DISPLAY EAST INC.; JAPAN DISPLAY WEST INC.
To: JAPAN DISPLAY INC.
Reel/Frame 071935/0063 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 8, 2013
From: SONY CORPORATION
To: JAPAN DISPLAY WEST INC.
Reel/Frame 031377/0942 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 8, 2010
From: EPSON IMAGING DEVICES CORPORATION
To: SONY CORPORATION
Reel/Frame 024500/0239 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 6, 2007
From: HIGA, MASAKATSU; WADA, HIROSHI
To: EPSON IMAGING DEVICES CORPORATION
Reel/Frame 019708/0615 →