IP Library › Granted Patent US 11,281,040
Granted Patent B2
US 11,281,040 · App. 17/011,473 · Granted Mar 22, 2022

Display device

Inventor: Toshiharu Matsushima (Tokyo, JP)
Assignee: Japan Display Inc.
G02F1/13338G02F1/134363G06F3/044G06F3/0445G02F1/134318G02F1/134381
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Quick Facts
Patent No.
US 11,281,040
App. No.
17/011,473
Granted
Mar 22, 2022
Kind
B2
Abstract

A display device is provided and includes first substrate; gate lines extending on first substrate; data lines extending in a direction crossing gate lines; first electrode on first substrate; insulating film on first electrode; second electrode on insulating film, facing first electrode and including connection electrode arranged in parallel with data lines and comb electrodes arranged in parallel with gate lines and slits arranged between comb electrodes; second substrate facing first substrate; liquid crystal layer provided between first and second substrates; and light shielding portion extending along extending direction of gate lines, wherein comb electrodes connected to connection electrode, length of each of slits in extending direction is longer than width of slits in direction orthogonal to extending direction, and in plan view, one of comb electrodes overlaps with light shielding portion.

Claims (37)

1. A display device comprising:

a first substrate;

a plurality of gate lines extending on the first substrate;

a plurality of data lines extending in a direction crossing the gate lines;

a first electrode on the first substrate;

an insulating film on the first electrode;

a second electrode on the insulating film, facing the first electrode and including a connection electrode arranged in parallel with the data lines and a plurality of comb electrodes arranged in parallel with the gate lines and a plurality of slits arranged between each of the comb electrodes;

a second substrate facing the first substrate;

a liquid crystal layer provided between the first substrate and the second substrate; and

a light shielding portion extending along the extending direction of the gate lines,

wherein each of the plurality of comb electrodes is connected to the connection electrode,

the length of each of the plurality of slits in the extending direction is longer than the width of each of the plurality of slits in a direction orthogonal to the extending direction, and

in a plan view, a first edge comb electrode arranged at the end of the comb electrodes and a part of the first electrode overlaps with the light shielding portion at the same position.

2. The display device according to claim 1 , further comprising:

a first orientation film provided between the first substrate and the liquid crystal layer and being subjected to an orientation process in a first orientation direction which is along an extending direction of the slits;

a second orientation film provided between the second substrate and the liquid crystal layer and being subjected to an orientation process in a second orientation direction which is along a first orientation direction of the first orientation film; and

in an initial orientation state of the liquid crystal layer, long axes of the liquid crystal molecules are aligned in the first orientation direction.

3. The display device according to claim 1 , further comprising:

the plurality of comb electrodes includes:

a plurality of first comb electrodes each connected to one side of the connection electrode in an extending direction of the gate line and each extending in the extending direction of the gate line; and

a plurality of second comb electrodes each connected to the other side of the connection electrode in the extending direction of the gate line and each extending in the extending direction of the gate line.

4. The display device according to claim 3 ,

wherein, the first comb electrodes and the second comb electrodes are alternately arranged so that their positions are shifted from each other in the extending direction of the data line.

5. The display device according to claim 1 ,

wherein the first electrode is a common electrode, and the second electrode is a pixel electrode arranged so as to be closer to the liquid crystal layer than the first electrode.

6. The display device according to claim 1 , further comprising:

a conductive layer covering the second substrate and arranged outside the second substrate.

7. The display device according to claim 6 , wherein

the conductive layer is provided with the same voltage as the first electrode.

8. The display device according to claim 1 , wherein

the plurality of comb electrode protrudes from the connection electrode on only one side.

9. The display device according to claim 8 ,

wherein the first electrode is a common electrode, and the second electrode is a pixel electrode arranged so as to be closer to the liquid crystal layer than the first electrode.

10. The display device according to claim 9 , further comprising:

a conductive layer covering the second substrate and arranged outside the second substrate.

11. The display device according to claim 10 , wherein

the conductive layer is provided with the same voltage as the first electrode.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 8, 2020
From: MATSUSHIMA, TOSHIHARU
To: JAPAN DISPLAY INC.
Reel/Frame 053714/0686 →
Priority Claims (1)
JP JP2012-236500 · Oct 26, 2012 · national
Continuity (4)
Continuation 16244612 · Jan 10, 2019
Continuation 15660037 · Jul 26, 2017
Continuation 14058971 · Oct 21, 2013
Related Publication 20200400988A1 · Dec 24, 2020