TOUCH INPUT DEVICE

• US 20190155438A1
• Filed: 05/04/2017
• Published: 05/23/2019
• Est. Priority Date: 06/28/2016
• Status: Abandoned Application

• Current Assignee: HiDeep Inc.
• Original Assignee: HiDeep Inc.
• Inventors: KIM, Se Yeob, CHO, Young Ho, KIM, Bon Kee
• Application Number:
  US16/314,035
• Publication Number:
  US 20190155438A1
• Time in Patent Office: Days
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/04166 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 Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

A touch input device may be provided that includes: a first cover layer; a spacer layer; a display panel which includes a first substrate layer and a second substrate layer disposed under the first substrate layer; a first electrode and a second electrode which are disposed between the first substrate layer and the second substrate layer; and a third electrode and a fourth electrode which are disposed on the display panel. At least one of the first electrode and the second electrode is used to drive the display panel. A touch position is detected based on a capacitance which changes as an object approaches a touch sensor including at least one of the first electrode, the second electrode, the third electrode, and the fourth electrode and which is detected from the touch sensor. A touch pressure is detected based on a capacitance which is changed by change of a distance between the object and a pressure sensor including at least one of the first electrode, the second electrode, the third electrode, and the fourth electrode and which is detected from the pressure sensor. The spacer layer is disposed between the first cover layer and the pressure sensor.

Claims

1. A touch input device comprising:

a first cover layer;

a spacer layer;

a display panel which comprises a first substrate layer and a second substrate layer disposed under the first substrate layer;

a first electrode and a second electrode which are disposed between the first substrate layer and the second substrate layer; and

a third electrode and a fourth electrode which are disposed on the display panel,

wherein at least one of the first electrode and the second electrode is used to drive the display panel,

wherein a touch position is detected based on a capacitance which changes as an object approaches a touch sensor comprising at least one of the first electrode, the second electrode, the third electrode, and the fourth electrode and which is detected from the touch sensor,

wherein a touch pressure is detected based on a capacitance which is changed by change of a distance between the object and a pressure sensor comprising at least one of the first electrode, the second electrode, the third electrode, and the fourth electrode and which is detected from the pressure sensor,

and wherein the spacer layer is disposed between the first cover layer and the pressure sensor.

2. The touch input device of claim 1,

wherein the touch sensor comprises the third electrode and the fourth electrode,

and wherein the touch position is detected based on a mutual capacitance between the third electrode and the fourth electrode.

3. The touch input device of claim 1,

wherein the touch sensor comprises the third electrode,

and wherein the touch position is detected based on a self-capacitance of the third electrode.

4. The touch input device of claim 1,

wherein the touch sensor comprises the first electrode and the third electrode,

and wherein the touch position is detected based on a mutual capacitance between the first electrode and the third electrode.

5. The touch input device of claim 4, wherein the first electrode is a common electrode.

16. The touch input device of claim 1,

wherein the pressure sensor comprises the third electrode and the fourth electrode,

and wherein the touch pressure is detected based on the mutual capacitance between the third electrode and the fourth electrode.

17. The touch input device of claim 1,

wherein the pressure sensor comprises the third electrode,

and wherein the touch pressure is detected based on the self-capacitance of the third electrode.

18. The touch input device of claim 1,

wherein the pressure sensor comprises the first electrode and the third electrode,

and wherein the touch pressure is detected based on the mutual capacitance between the first electrode and the third electrode.

19. The touch input device of claim 18, wherein the first electrode is a common electrode.

20. The touch input device of claim 1,

wherein the pressure sensor comprises the first electrode and the second electrode,

and wherein the touch pressure is detected based on the mutual capacitance between the first electrode and the second electrode.

6. A touch input device comprising:

a first cover layer;

a spacer layer;

a display panel which comprises a first substrate layer and a second substrate layer disposed under the first substrate layer;

a first electrode and a second electrode which are disposed between the first substrate layer and the second substrate layer; and

a third electrode and a fourth electrode which are formed on a top surface of the first substrate layer,

wherein at least one of the first electrode and the second electrode is used to drive the display panel,

wherein a touch position is detected based on a capacitance which changes as an object approaches a touch sensor comprising at least one of the first electrode, the second electrode, the third electrode, and the fourth electrode and which is detected from the touch sensor,

wherein a touch pressure is detected based on a capacitance which is changed by change of a distance between the object and a pressure sensor comprising at least one of the first electrode, the second electrode, the third electrode, and the fourth electrode and which is detected from the pressure sensor,

and wherein the spacer layer is disposed between the first cover layer and the pressure sensor.

7. The touch input device of claim 6,

wherein the touch sensor comprises the third electrode and the fourth electrode,

and wherein the touch position is detected based on a mutual capacitance between the third electrode and the fourth electrode.

8. The touch input device of claim 6,

wherein the touch sensor comprises the third electrode,

and wherein the touch position is detected based on a self-capacitance of the third electrode.

9. The touch input device of claim 6,

wherein the touch sensor comprises the first electrode and the third electrode,

and wherein the touch position is detected based on a mutual capacitance between the first electrode and the third electrode.

10. The touch input device of claim 9, wherein the first electrode is a common electrode.

11. A touch input device comprising:

a first cover layer;

a spacer layer;

a display panel which comprises a first substrate layer and a second substrate layer disposed under the first substrate layer; and

a first electrode and a second electrode which are disposed between the first substrate layer and the second substrate layer,

wherein at least one of the first electrode and the second electrode is used to drive the display panel,

wherein a touch position is detected based on a capacitance which changes as an object approaches a touch sensor comprising at least one of the first electrode and the second electrode and which is detected from the touch sensor,

wherein a touch pressure is detected based on a capacitance which is changed by change of a distance between the object and a pressure sensor comprising at least one of the first electrode and the second electrode and which is detected from the pressure sensor,

and wherein the spacer layer is disposed between the first cover layer and the pressure sensor.

12. The touch input device of claim 11,

wherein the touch sensor comprises the first electrode and the second electrode,

and wherein the touch position is detected based on a mutual capacitance between the first electrode and the second electrode.

13. The touch input device of claim 12, wherein at least one of the first electrode and the second electrode is a common electrode.

14. The touch input device of claim 11,

wherein the touch sensor comprises the first electrode,

and wherein the touch position is detected based on a self-capacitance of the first electrode.

15. The touch input device of claim 14, wherein the first electrode is a common electrode.

21-57. -57. (canceled)