IP Library Granted Patent US 11,073,732
Granted Patent B2
US 11,073,732 · App. 16/703,895 · Granted Jul 27, 2021

Display device

Inventors: Hiroyuki Abe (Tokyo, JP); Kazune Matsumura (Tokyo, JP); Gen Koide (Tokyo, JP)
Assignee: JAPAN DISPLAY INC.
G02F1/136286G02F1/1339G02F1/13306G09G3/3677G09G2310/0286
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Quick Facts
Patent No.
US 11,073,732
App. No.
16/703,895
Granted
Jul 27, 2021
Kind
B2
Abstract

According to one embodiment, a display device includes a display portion, a non-display portion around the display portion, a scanning line located in the display portion, a feed line at a common potential located in the non-display portion, a scanning line drive circuit located in the non-display portion and supplying a scanning signal to the scanning line, a first wiring line group located between the feed line and the scanning line drive circuit and connected to the scanning line drive circuit, and a transparent conductive film electrically connected to the feed line and covering the feed line, the first wiring line group and the scanning line drive circuit. The transparent conductive film has an opening overlapping the first wiring line group.

Claims (72)

1. A display device comprising:

a first substrate;

a second substrate facing the first substrate;

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

a sealant bonding the first substrate and the second substrate together and sealing in the liquid crystal layer;

a display portion of the first substrate in which a plurality of pixels are arranged in a matrix in a first direction and a second direction;

a non-display portion of the first substrate around the display portion;

a scanning line located in the display portion and extending in the first direction;

a feed line at a common potential located in the non-display portion and extending in the second direction;

a scanning line drive circuit located in the non-display portion and supplying a scanning signal to the scanning line;

a first wiring line group located between the feed line and the scanning line drive circuit and connected to the scanning line drive circuit; and

a transparent conductive film electrically connected to the feed line and covering the feed line, the first wiring line group and the scanning line drive circuit, wherein

the transparent conductive film has an opening overlapping the first wiring line group,

the sealant is located in the non-display portion and overlaps the opening of the transparent conductive film,

the opening is formed in a region close to the feed line of a region overlapping the first wiring line group,

the feed line is located between a substrate end portion of the first substrate and the scanning line drive circuit, and

the scanning line drive circuit is located between the feed line and the display portion.

2. The display device of claim 1 , wherein

the scanning line drive circuit comprises a shift register, a gate switch, and a scan direction switching circuit,

the first wiring line group and the scan direction switching circuit are located between the feed line and the shift register in the first direction, and

the transparent conductive film overlaps the scan direction switching circuit.

3. The display device of claim 2 , further comprising a second wiring line group located between the shift register and the gate switch in the first direction and connected to the scanning line drive circuit, wherein

the opening does not overlap the second wiring line group.

4. The display device of claim 2 , wherein

the transparent conductive film has a first end portion on a display portion side thereof, and

the first end portion overlaps the gate switch.

5. The display device of claim 2 , further comprising a wiring line located between the gate switch and the display portion in the first direction and extending in the second direction, wherein

a potential of the wiring line is a fixed potential lower than a potential of the transparent conductive film, and

the transparent conductive film does not overlap the wiring line.

6. The display device of claim 2 , wherein the sealant overlaps the feed line, the first wiring line group and the shift register but does not overlap the gate switch in a planar view.

7. The display device of claim 4 , wherein

the sealant has a second end portion on a display portion side thereof, and

the first end portion is located between the second end portion and the display portion.

8. The display device of claim 1 , wherein

the scanning line drive circuit comprises a first shift register, a second shift register, a first scan direction switching circuit located between the feed line and the first shift register in the first direction, and a second scan direction switching circuit located between the feed line and the second shift register in the first direction, and

the opening is formed between the first scan direction switching circuit and the second scan direction switching circuit in the second direction.

9. A display device comprising:

a first substrate;

a second substrate facing the first substrate;

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

a sealant bonding the first substrate and the second substrate together and sealing in the liquid crystal layer;

a display portion of the first substrate in which a plurality of pixels are arranged in a matrix in a first direction and a second direction;

a non-display portion of the first substrate around the display portion;

a scanning line located in the display portion and extending in the first direction;

a feed line at a common potential located in the non-display portion and extending in the second direction;

a scanning line drive circuit located in the non-display portion and supplying a scanning signal to the scanning line;

a first wiring line group located between the feed line and the scanning line drive circuit and connected to the scanning line drive circuit; and

a transparent conductive film electrically connected to the feed line and covering the feed line, the first wiring line group and the scanning line drive circuit, wherein

the transparent conductive film has an opening overlapping the first wiring line group,

the sealant is located in the non-display portion and overlaps the opening of the transparent conductive film,

the feed line is located between a substrate end portion of the first substrate and the scanning line drive circuit,

the scanning line drive circuit is located between the feed line and the display portion,

the first substrate further comprises a first insulating film, a second insulating film, a third insulating film, a first connection electrode which is in contact with the feed line in a first through hole of the first insulating film, and a second connection electrode which is in contact with the first connection electrode in a second through hole of the second insulating film in the non-display portion, and

the transparent conductive film is in contact with the second connection electrode in a third through hole of the third insulating film.

10. The display device of claim 9 , wherein

the first insulating film and the second insulating film are organic insulating films,

the first connection electrode is a metal electrode, and

the second connection electrode is a transparent electrode.

11. The display device of claim 9 , wherein

the first substrate further comprises an alignment film,

an upper surface of the alignment film is in contact with the sealant,

an upper surface of the transparent conductive film is in contact with the alignment film, and

a lower surface of the transparent conductive film is in contact with the third insulating film.

12. The display device of claim 9 , wherein

the first substrate further comprises a signal line, a metal line overlapping the signal line, a common electrode and a pixel electrode in the display portion,

the metal line is located between the first insulating film and the second insulating film and is formed of a same material as the first connection electrode,

the common electrode is located between the second insulating film and the third insulating film and is formed of a same material as the second connection electrode, and

the pixel electrode is located between the third insulating film and the liquid crystal layer and is formed of a same material as the transparent conductive film.

13. The display device of claim 12 , wherein the feed line and the first wiring line group are covered with the first insulating film and are formed of a same material as the signal line.

14. The display device of claim 11 , wherein the alignment film is in contact with the third insulating film in the opening.

15. The display device of claim 9 , wherein the first through hole, the second through hole and the third through hole are deviated from one another.

16. The display device of claim 1 , wherein the transparent conductive film has a plurality of openings including the opening, and the openings are arranged in a direction in which the first wiring line group extends.

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 Dec 5, 2019
From: ABE, HIROYUKI; MATSUMURA, KAZUNE; KOIDE, GEN
To: JAPAN DISPLAY INC.
Reel/Frame 051187/0187 →
Priority Claims (1)
JP 2018-236407 · Dec 18, 2018 · national
Continuity (1)
Related Publication 20200192170A1 · Jun 18, 2020
Cited By (2)
US 12,236,049 US 12,541,272