IP Library Granted Patent US 11,294,525
Granted Patent B2
US 11,294,525 · App. 17/152,704 · Granted Apr 5, 2022

Touch panel and display device

Inventors: Kazutoshi Kida (Sakai, JP); Takenori Maruyama (Sakai, JP); Takuma Yamamoto (Sakai, JP)
Assignee: SHARP KABUSHIKI KAISHA
G06F3/0446G06F2203/04105G06F2203/04112
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Quick Facts
Patent No.
US 11,294,525
App. No.
17/152,704
Granted
Apr 5, 2022
Kind
B2
Abstract

touch panel includes a first substrate including a first surface, a second substrate including a second surface opposite to the first surface, a drive electrode formed on the first surface, and a position sense electrode, a pressing force sense electrode, and a shield electrode that are formed on the second surface. The shield electrode is disposed between the position sense electrode and the pressing force sense electrode, and, in a plan view when viewing the second substrate from the first substrate, the drive electrode covers at least a portion of the pressing force sense electrode, and at least a portion of an end portion of the drive electrode is positioned above the shield electrode.

Claims (46)

1. A touch panel comprising:

a first substrate including a first surface;

a second substrate including a second surface opposite to the first surface;

a drive electrode formed on the first surface; and

a position sense electrode, a pressing force sense electrode, and a shield electrode that are formed on the second surface,

wherein the shield electrode is disposed between the position sense electrode and the pressing force sense electrode, and

in a plan view when viewing the second substrate from the first substrate, the drive electrode covers at least a portion of the pressing force sense electrode, and at least a portion of an end portion of the drive electrode is positioned above the shield electrode,

wherein W 1 ≥H is satisfied,

where H is an interval between the first surface and the second surface, and

W 1 is a distance from an end portion of the shield electrode located closer to the position sense electrode to an end portion of the drive electrode above the shield electrode in a plan view when viewing the second substrate from the first substrate.

2. The touch panel according to claim 1 ,

wherein a potential of the shield electrode is equal to the ground potential or a potential provided to the position sense electrode or the pressing force sense electrode.

3. The touch panel according to claim 1 ,

wherein the pressing force sense electrode and the shield electrode are formed of a mesh metal.

4. The touch panel according to claim 3 ,

wherein the position sense electrode is formed of a mesh metal.

5. The touch panel according to claim 1 further comprising:

a floating island electrode in a floating state formed on the first surface,

wherein in a plan view when viewing the second substrate from the first substrate, the floating island electrode covers at least a portion of the position sense electrode.

6. A display device comprising:

the touch panel according to claim 1 ; and

a display unit configured to display an image,

wherein the touch panel is disposed on a display surface on which the display unit displays an image.

7. A touch panel comprising:

a first substrate including a first surface;

a second substrate including a second surface opposite to the first surface;

a drive electrode formed on the first surface; and

a position sense electrode, a pressing force sense electrode, and a shield electrode that are formed on the second surface,

wherein the shield electrode is disposed between the position sense electrode and the pressing force sense electrode, and

in a plan view when viewing the second substrate from the first substrate, the drive electrode covers at least a portion of the pressing force sense electrode, and at least a portion of an end portion of the drive electrode is positioned above the shield electrode,

wherein W 2 ≥H is satisfied,

where H is an interval between the first surface and the second surface, and

W 2 is a distance from an end portion of the shield electrode located closer to the pressing force sense electrode to an end portion of the drive electrode above the shield electrode in a plan view when viewing the second substrate from the first substrate.

8. The touch panel according to claim 7 ,

wherein a potential of the shield electrode is equal to the ground potential or a potential provided to the position sense electrode or the pressing force sense electrode.

9. The touch panel according to claim 7 ,

wherein the pressing force sense electrode and the shield electrode are formed of a mesh metal.

10. The touch panel according to claim 9 ,

wherein the position sense electrode is formed of a mesh metal.

11. The touch panel according to claim 7 further comprising:

a floating island electrode in a floating state formed on the first surface,

wherein in a plan view when viewing the second substrate from the first substrate, the floating island electrode covers at least a portion of the position sense electrode.

12. A display device comprising:

the touch panel according to claim 7 ; and

a display unit configured to display an image,

wherein the touch panel is disposed on a display surface on which the display unit displays an image.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 19, 2021
From: KIDA, KAZUTOSHI; MARUYAMA, TAKENORI; YAMAMOTO, TAKUMA
To: SHARP KABUSHIKI KAISHA
Reel/Frame 054958/0649 →
Priority Claims (1)
JP JP2020-022390 · Feb 13, 2020 · national
Continuity (1)
Related Publication 20210255737A1 · Aug 19, 2021
Cited By (1)
US 12,656,901