IP Library Granted Patent US 11,762,243
Granted Patent B2
US 11,762,243 · App. 17/866,786 · Granted Sep 19, 2023

Display device

Inventors: Motoharu Miyamoto (Tokyo, JP); Tomokazu Ishikawa (Tokyo, JP)
Assignee: Japan Display Inc.
G02F1/1339G02F1/136286G09G3/3674
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Quick Facts
Patent No.
US 11,762,243
App. No.
17/866,786
Granted
Sep 19, 2023
Kind
B2
Abstract

Display device is provided and includes scanning line; semiconductor layer; pixel electrode; first insulating film having first contact hole; organic insulating film having second contact hole; and second insulating film having third contact hole, wherein semiconductor layer has first linear portion that is orthogonal to scanning line, pixel electrode is electrically connected to first linear portion via first, second and third contact holes, first linear portion overlaps first, second and third contact holes that are aligned along first linear portion, and center of second contact hole is located between center of first contact hole and center of third contact hole.

Claims (44)

1. A display device comprising:

a scanning line;

a semiconductor layer;

a pixel electrode;

a first insulating film having a first contact hole;

an organic insulating film having a second contact hole;

a second insulating film having a third contact hole; and

a third insulating film provided between the pixel electrode and the second insulating film,

wherein

the semiconductor layer has a first linear portion that is orthogonal to the scanning line,

the pixel electrode is electrically connected to the first linear portion via the first contact hole, the second contact hole, and the third contact hole,

the first linear portion overlaps the first contact hole, the second contact hole, and the third contact hole that are aligned along the first linear portion,

a center of the second contact hole is located between a center of the first contact hole and a center of the third contact hole,

the organic insulating film is provided between the first insulating film and the second insulating film,

the second insulating film is provided between the pixel electrode and the organic insulating film,

the first contact hole exposes the first linear portion,

the third insulating film has a fourth contact hole,

the pixel electrode is electrically connected to the first linear portion via the first contact hole, the second contact hole, the third contact hole, and the fourth contact holes,

a center of the fourth contact hole is shifted from the center of the third contact hole relative to an extending direction of the first linear portion, and

the fourth contact hole has an overlapping portion that overlaps the third contact hole and a portion that does not overlap the third contact hole.

2. The display device of claim 1 , wherein, in a plan view,

a size of the second contact hole is larger than a size of the first contact hole, and

a size of the third contact hole is larger than the size of the second contact hole.

3. The display device of claim 1 , wherein

the second contact hole has an overlapping portion that overlaps the third contact hole and a portion that does not overlap the third contact hole, and

the third contact hole has the overlapping portion that overlaps the second contact hole and a portion that does not overlap the second contact hole.

4. The display device of claim 1 , wherein

the pixel electrode has a contact part and a pair of electrode parts,

the first contact hole is located between the pair of the electrode parts, outside the contact part.

5. The display device of claim 1 , further comprising an insulating substrate and light-shielding body, wherein

the light-shielding body is provided between the scanning line and the insulating substrate,

the light-shielding body is located overlapping a region where the first linear portion and the scanning line cross at right angles, and

part of the third contact hole overlaps the light-shielding body, and

the second contact hole does not overlap the light-shielding body.

6. The display device of claim 1 , wherein part of the second contact hole overlaps the overlapping portion that the third contact hole and the fourth contact hole overlap.

7. The display device of claim 1 , further comprises a detection electrode, wherein

the detection electrode is opposed to the pixel electrode,

the detection electrode is provided between the pixel electrode and the second insulating film,

the detection electrode overlaps none of the first contact hole, the second contact hole, and the third contact hole, and

the third contact hole is located closer to the scanning line than the first contact hole is.

8. The display device of claim 1 , further comprises a common electrode, wherein

the detection electrode is opposed to the pixel electrode,

the detection electrode is provided between the pixel electrode and the third insulating film,

the detection electrode overlaps none of the first contact hole, the second contact hole, the third contact hole, and the fourth contact hole.

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 Jul 18, 2022
From: MIYAMOTO, MOTOHARU; ISHIKAWA, TOMOKAZU
To: JAPAN DISPLAY INC.
Reel/Frame 060535/0003 →
Priority Claims (1)
JP 2018-130222 · Jul 9, 2018 · national
Continuity (3)
Continuation 17142839 · Jan 6, 2021
Continuation PCTJP2019025729 · Jun 27, 2019
Related Publication 20220350182A1 · Nov 3, 2022