IP Library Granted Patent US 10,303,288
Granted Patent B2
US 10,303,288 · App. 15/652,393 · Granted May 28, 2019

Display device with touch detecting function and electronic apparatus

Inventors: Koji Ishizaki (Tokyo, JP); Hayato Kurasawa (Tokyo, JP); Takeo Koito (Tokyo, JP)
Assignee: Japan Display Inc.
G06F3/0416G06F3/044G06F3/047G06F2203/04103G06F2203/04108G06F2203/04112
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Quick Facts
Patent No.
US 10,303,288
App. No.
15/652,393
Granted
May 28, 2019
Kind
B2
Abstract

A touch panel is disclosed herein. In an embodiment, the touch panel includes a substrate with first and second surfaces, a drive electrode facing the first surface, a plurality of touch detection electrodes facing the second surface, and a dummy electrode between adjacent touch detection electrodes. Each touch detection electrode includes a first conductive thin wire extending parallel to the first and second surfaces. The dummy electrode includes a second conductive thin wire extending along the first conductive thin wire. The first conductive thin wire includes a first bent portion and a second bent portion alternately arranged with the first conductive thin wire having a zigzag pattern. The second conductive thin wire includes a third bent portion and a slit that are alternately arranged. The third bent portion is arranged on a virtual straight line formed by virtually connecting the first bent portions of one first conductive thin wire.

Claims (38)

1. A touch panel comprising:

a substrate;

a drive electrode facing a first surface of the substrate;

a plurality of touch detection electrodes facing a second surface of the substrate and including a first touch detection electrode and a second touch detection electrode; and

a dummy electrode arranged between the first and second touch detection electrodes,

wherein each of the first and second touch detection electrodes includes a first conductive thin wire extending in a first direction on a plane parallel to the first and second surfaces of the substrate,

wherein the dummy electrode includes a second conductive thin wire extending along the first conductive thin wire,

wherein the first conductive thin wire includes a first bent portion and a second bent portion that are alternately arranged such that the first conductive thin wire has a zigzag pattern,

wherein the second conductive thin wire includes a third bent portion and a slit that are alternately arranged, and

wherein the third bent portion of the second conductive thin wire is arranged on a virtual straight line formed by virtually connecting the first bent portions included in the first conductive thin wire of the first touch detection electrode.

2. The touch panel according to claim 1 , wherein the second bent portion of the first conductive thin wire and the third bent portion of the second conductive thin wire are adjacent in a second direction intersecting the first direction.

3. The touch panel according to claim 1 , wherein

the dummy electrode further includes another second conductive thin wire extending along the first conductive thin wire, and

the slit of the another second conductive thin wire is arranged on a virtual straight line formed by virtually connecting the second bent portions included in the first conductive thin wire of the second touch detection electrode.

4. The touch panel according to claim 1 , wherein the first bent portion of the first conductive thin wire and the slit of the second conductive thin wire are adjacent in a second direction intersecting the first direction.

5. The touch panel according to claim 1 , wherein the first conductive thin wire and the second conductive thin wire are parallel.

6. The touch panel according to claim 1 , wherein the first conductive thin wire included in the first touch detection electrode and the first conductive thin wire included in the second touch detection electrode are electrically coupled to each other.

7. The touch panel according to claim 1 , wherein a display functional layer is provided between the drive electrode and the substrate.

8. The touch panel according to claim 7 , wherein a pixel electrode is provided between the drive electrode and the display functional layer.

9. A touch panel comprising:

a substrate;

a drive electrode facing a first surface of the substrate;

a plurality of touch detection electrodes facing a second surface of the substrate and including a first touch detection electrode and a second touch detection electrode; and

a dummy electrode arranged between the first and second touch detection electrodes,

wherein each of the first and second touch detection electrodes includes a first conductive thin wire extending in a first direction on a plane parallel to the first and second surfaces of the substrate,

wherein the dummy electrode includes a second conductive thin wire extending along the first conductive thin wire,

wherein the first conductive thin wire includes a first bent portion and a second bent portion that are alternately arranged such that the first conductive thin wire has a zigzag pattern,

wherein the second conductive thin wire includes a first slit and a second slit that are alternately arranged, and

wherein the first slit of the second conductive thin wire is arranged on a virtual straight line formed by virtually connecting the second bent portions included in the first conductive thin wire of the first touch detection electrode.

10. The touch panel according to claim 9 , wherein the second bent portion of the first conductive thin wire and the second slit of the second conductive thin wire are adjacent in a second direction intersecting the first direction.

11. The touch panel according to claim 9 , wherein

the dummy electrode further includes another second conductive thin wire extending along the first conductive thin wire, and

the second slit of the another second conductive thin wire is arranged on a virtual straight line formed by virtually connecting the first bent portions included in the first conductive thin wire of the second touch detection electrode.

12. The touch panel according to claim 9 , wherein the first bent portion of the first conductive thin wire and the first slit of the second conductive thin wire are adjacent in a second direction intersecting the first direction.

13. The touch panel according to claim 9 , wherein the first conductive thin wire and the second conductive thin wire are parallel.

14. The touch panel according to claim 9 , wherein the first conductive thin wire included in the first touch detection electrode and the first conductive thin wire included in the second touch detection electrode are electrically coupled to each other.

15. The touch panel according to claim 9 , wherein a display functional layer is provided between the drive electrode and the substrate.

16. The touch panel according to claim 15 , wherein a pixel electrode is provided between the drive electrode and the display functional layer.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
CORRECTIVE ASSIGNMENT TO CORRECT THE EXECUTION DATE OF THE THIRD INVENTOR PREVIOUSLY RECORDED AT REEL: 043033 FRAME: 0460. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT . Recorded Jul 24, 2017
From: ISHIZAKI, KOJI; KURASAWA, HAYATO; KOITO, TAKEO
To: JAPAN DISPLAY INC.
Reel/Frame 043318/0591 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2017
From: ISHIZAKI, KOJI; KURASAWA, HAYATO; KOITO, TAKEO
To: JAPAN DISPLAY INC.
Reel/Frame 043033/0460 →
Priority Claims (1)
JP 2013-067515 · Mar 27, 2013 · national
Continuity (3)
Continuation 14861676 · Sep 22, 2015
Continuation 14219212 · Mar 19, 2014
Related Publication 20170315664A1 · Nov 2, 2017