Touch input device

Patent metadata

Field	Value
Publication number	US-11709573-B2
Application number	US-202217704988-A
Country	US
Kind code	B2
Filing date	Mar 25, 2022
Priority date	Aug 1, 2014
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

A touch input device is disclosed that may comprise a display panel and/or a touch sensor. The touch sensor may include a driving electrode and/or a receiving electrode that may be disposed on the display panel and/or inside the display panel. The touch input device may comprise an electrode pattern that may be disposed on a bottom surface of the display panel. The touch input device may comprise a controller that may be configured to provide a first driving signal to the driving electrode of the touch sensor. The controller may be configured to receive a touch detection signal from the receiving electrode of the touch sensor. The controller may be configured to detect a touch position, perhaps for example based on the touch detection signal. The controller may be configured to provide a second driving signal different from the first driving signal to the electrode pattern.

First claim

What is claimed is:

1. A touch input device comprising:
a display panel;
a touch sensor including a driving electrode and a receiving electrode disposed on the display panel or inside the display panel;
an electrode pattern disposed on a bottom surface of the display panel, the electrode pattern being disposed to surround at least a portion of the bottom surface of the display panel, the electrode pattern comprising:
a first electrode pattern extending in a first direction and having one end to which the second driving signal is applied;
a second electrode pattern electrically connected to the first electrode pattern and extending in a second direction different from the first direction;
a third electrode pattern electrically connected to the second electrode pattern and extending in a third direction different from the second direction; and
a fourth electrode pattern electrically connected to the third electrode pattern and extending in a fourth direction different from the third direction; and

a controller providing a first driving signal to the driving electrode of the touch sensor, receiving a touch detection signal from the receiving electrode of the touch sensor, detecting a touch position based on the touch detection signal, and providing a second driving signal different from the first driving signal to the electrode pattern.

2. The device of claim 1 ,
wherein the first electrode pattern, the second electrode pattern, the third electrode pattern, and the fourth electrode pattern are directly formed at the bottom surface of the display panel.

3. The device of claim 1 ,
wherein the second direction is perpendicular to the first direction,
wherein the third direction is perpendicular to the second direction,
wherein the fourth direction is perpendicular to the third direction,
wherein the second electrode pattern has one end connected to the other end of the first electrode pattern;
wherein the third electrode pattern has one end connected to the other end of the second electrode pattern; and
wherein the fourth electrode pattern having has one end connected to the other end of the third electrode pattern.

4. The device of claim 1 ,
wherein at least one of: the first electrode pattern, the second electrode pattern, the third electrode pattern, or the fourth electrode pattern has a predetermined curvature and is arranged in a circle.

5. The device of claim 1 , wherein at least a portion of the touch sensor and at least one of: the first electrode pattern, the second electrode pattern, the third electrode pattern, or the fourth electrode pattern overlap.

6. The device of claim 1 , wherein the second electrode pattern has one end connected to the other end of the first electrode pattern, and at least a portion of the second electrode pattern extends perpendicular to the first direction,
wherein the third electrode pattern has one end connected to the other end of the second electrode pattern, and at least a portion of the third electrode pattern extends parallel to the first direction, and
wherein the fourth electrode pattern has one end connected to the other end of the third electrode pattern, and at least a portion of the fourth electrode pattern extends parallel to the second direction.

7. A touch input device comprising: a display panel; a touch sensor including a driving electrode and a receiving electrode disposed on the display panel or inside the display panel; an electrode pattern disposed on a bottom surface of the display panel; and a controller providing a first driving signal to the driving electrode of the touch sensor, receiving a touch detection signal from the receiving electrode of the touch sensor, detecting a touch position based on the touch detection signal, and providing a second driving signal different from the first driving signal to the electrode pattern, wherein the electrode pattern is disposed to surround at least a portion of the bottom surface of the display panel, and wherein the electrode pattern comprises: a plurality of first electrode patterns extending in parallel along a first direction; and a second electrode pattern extending in a second direction perpendicular to the first direction and connected to one end of each of the plurality of first electrode patterns.

8. The device of claim 7 , wherein at least one of: one or more of the plurality of first electrode patterns, or the second electrode pattern, are directly formed at the bottom surface of the display panel.

9. The device of claim 7 , wherein at least one of: one or more of the plurality of first electrode patterns, or the second electrode pattern, has a predetermined curvature and is arranged in a circle.

10. The device of claim 7 , wherein at least a portion of the touch sensor and at least one of: one or more of the plurality of first electrode patterns, or the second electrode pattern, overlap.

11. A touch input device comprising:
a display panel;
a touch sensor including a driving electrode and a receiving electrode disposed on the display panel or inside the display panel;
an electrode pattern disposed in the display panel; and
a controller providing a first driving signal to the driving electrode of the touch sensor, receiving a touch detection signal from the receiving electrode of the touch sensor, detecting a touch position based on the touch detection signal, and providing a second driving signal different from the first driving signal to the electrode pattern,
wherein the electrode pattern is disposed to surround at least a portion of the display panel.

12. The device of claim 11 ,
wherein the electrode pattern comprises a plurality of electrode patterns,
wherein the plurality of electrode patterns are disposed on the same plane in the display panel.

13. The device of claim 11 , wherein the electrode pattern comprises:
a first electrode pattern extending in a first direction and having one end to which the second driving signal is applied;
a second electrode pattern having one end connected to the other end of the first electrode pattern and extending in a second direction perpendicular to the first direction;
a third electrode pattern having one end connected to the other end of the second electrode pattern and extending in the first direction; and
a fourth electrode pattern having one end connected to the other end of the third electrode pattern and extending in the second direction.

14. The device of claim 11 ,
wherein the electrode pattern has a predetermined curvature and is arranged in a circle.

15. The device of claim 11 , wherein the electrode pattern comprises:
a plurality of first electrode patterns extending in parallel along the first direction; and
a second electrode pattern extending in a second direction perpendicular to the first direction and connected to one end of each of the plurality of first electrode patterns.

16. The device of claim 11 ,
wherein at least a portion of the touch sensor and the electrode pattern overlap.

Assignees

• Hideep Inc

Inventors

• Kim Seyeob
• Yoon Sangsic
• Kwon Sunyoung
• Moon Hojun
• Kim Taehoon
• Kim Bonkee

Classifications

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F3/0447

  Position sensing using the local deformation of sensor cells · CPC title

• G06F3/04166

  Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184) · CPC title