TOUCH SENSOR PANEL, TOUCH DETECTION DEVICE AND TOUCH INPUT DEVICE COMPRISING SAME

• US 20160188039A1
• Filed: 07/29/2014
• Published: 06/30/2016
• Est. Priority Date: 07/29/2013
• Status: Abandoned Application

• Current Assignee: HiDeep Inc.
• Original Assignee: HiDeep Inc.
• Inventors: Kim, Bon Kee, Yoon, Sang Sic
• Application Number:
  US14/908,706
• Publication Number:
  US 20160188039A1
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 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 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

A touch sensor panel may be provided that includes: a plurality of first electrodes which are formed on a first insulation layer and extend in a first axial direction; a plurality of second electrodes which are formed on a second insulation layer and extend in a second axial direction crossing the first axial direction; and a space layer located between the first electrode and the second insulation layer. A distance between the first electrode and the second electrode changes depending on a magnitude of a pressure of a touch applied to at least any one of the first electrode and the second electrode. A capacitance between the first electrode and the second electrode changes depending on the distance.

Claims

1. A touch sensor panel comprising:

a plurality of first electrodes which are formed on a first insulation layer and extend in a first axial direction;

a plurality of second electrodes which are formed on a second insulation layer and extend in a second axial direction crossing the first axial direction; and

a space layer located between the first electrode and the second insulation layer,

wherein a distance between the first electrode and the second electrode changes depending on a magnitude of a pressure of a touch applied to at least any one of the first electrode and the second electrode,

and wherein a capacitance between the first electrode and the second electrode changes depending on the distance.

2. The touch sensor panel of claim 1, wherein the spacer layer comprises a plurality of dot spacers formed on the first electrode.

3. The touch sensor panel of claim 1, wherein the spacer layer is filled with a dielectric substance.

4. The touch sensor panel of claim 1, wherein the spacer layer is made of an adhesive material which adheres the first electrode and the second insulation layer to each other.

5. The touch sensor panel of claim 1,

further comprising a plurality of third electrodes which are located on the second insulation layer, while being spaced from the second electrode, and extend in the first axial direction,

wherein a capacitance between the second electrode and the third electrode changes depending on the touch on a surface of the touch sensor panel, which is a 2-dimensional plane consisting of the first axis and the second axis.

6. The touch sensor panel of claim 1,

further comprising a plurality of third electrodes which are formed on a third insulation layer and extend in the first axial direction,

wherein a capacitance between the second electrode and the third electrode changes depending on the touch on a surface of the touch sensor panel, which is a 2-dimensional plane consisting of the first axis and the second axis.

7. The touch sensor panel of claim 1,

further comprising:

a plurality of third electrodes which are formed on a third insulation layer and extend in one of the first and second axial directions; and

a plurality of fourth electrodes which are formed on an additional insulation layer and extend in the other of the first and second axial directions,

wherein a capacitance between the third electrode and the fourth electrode changes depending on the touch on a surface of the touch sensor panel, which is a 2-dimensional plane consisting of the first axis and the second axis.

8. A touch input device comprising:

a touch sensor panel comprising;

a plurality of first electrodes which are formed on a first insulation layer and extend in a first axial direction;

a plurality of second electrodes which are formed on a second insulation layer and extend in a second axial direction crossing the first axial direction; and

a space layer located between the first electrode and the second insulation layer;

a drive unit which applies a drive signal to one of the first and second electrodes; and

a sensing unit which receives, from the other of the first and second electrodes, a sensing signal corresponding to a touch on a surface of the touch sensor panel, which is a 2-dimensional plane consisting of the first axis and the second axis, and then detects a magnitude of a pressure of the touch,

wherein a distance between the first electrode and the second electrode changes depending on the magnitude of the pressure of the touch,

and wherein the sensing signal comprises information on a capacitance which is formed between the first electrode and the second electrode and changes depending on the distance.

9. The touch input device of claim 8, wherein the spacer layer comprises a plurality of dot spacers formed on the first electrode.

10. The touch input device of claim 8, wherein the spacer layer is filled with a dielectric substance.

11. The touch input device of claim 8, wherein the spacer layer is made of an adhesive material which adheres the first electrode and the second insulation layer to each other.

12. The touch input device of claim 8,

wherein the sensing signal comprises information on a capacitance which is formed between the first electrode and the second electrode and changes depending on the touch,

and wherein the sensing unit receives the sensing signal, and then detects a position of the touch.

13. The touch input device of claim 8,

wherein the touch sensor panel further comprises a plurality of third electrodes which are located on the second insulation layer, while being spaced from the second electrode, and extend in the first axial direction,

wherein the sensing unit receives, from the third electrode, an additional sensing signal comprising information on a capacitance which is formed between the second electrode and the third electrode and changes depending on the touch, and then detects a position of the touch.

14. The touch input device of claim 8,

wherein the touch sensor panel further comprises a plurality of third electrodes which are formed on a third insulation layer and extend in the first axial direction,

and wherein the sensing unit receives, from the third electrode, an additional sensing signal comprising information on a capacitance which is formed between the second electrode and the third electrode and changes depending on the touch, and then detects a position of the touch.

15. The touch input device of claim 8,

wherein the touch sensor panel further comprises:

a plurality of third electrodes which are formed on a third insulation layer and extend in one of the first and second axial directions; and

a plurality of fourth electrodes which are formed on an additional insulation layer and extend in the other of the first and second axial directions,

wherein the drive unit applies an additional drive signal to one of the third and fourth electrodes,

and wherein the sensing unit receives, from the other of the third and fourth electrodes, an additional sensing signal comprising information on a capacitance which is formed between the third electrode and the fourth electrode and changes depending on the touch, and then detects a position of the touch.

16. A touch detection device which detects at least one of a position and a pressure magnitude of a touch input to a touch sensor panel comprising:

a plurality of first electrodes which are formed on a first insulation layer and extend in a first axial direction;

a plurality of second electrodes which are formed on a second insulation layer and extend in a second axial direction crossing the first axial direction; and

a space layer located between the first electrode and the second insulation layer, the touch detection device comprising;

a drive unit which applies a drive signal to one of the first and second electrodes; and

a sensing unit which receives, from the other of the first and second electrodes, a sensing signal corresponding to a touch on a surface of the touch sensor panel, which is a 2-dimensional plane consisting of the first axis and the second axis, and then detects a magnitude of a pressure of the touch,

wherein a distance between the first electrode and the second electrode changes depending on the magnitude of the pressure of the touch,

and wherein the sensing signal comprises information on a capacitance which is formed between the first electrode and the second electrode and changes depending on the distance.

17. The touch detection device of claim 16, wherein the spacer layer comprises a plurality of dot spacers formed on the first electrode.

18. The touch detection device of claim 16, wherein the spacer layer is filled with a dielectric substance.

19. The touch detection device of claim 16, wherein the spacer layer is made of an adhesive material which adheres the first electrode and the second insulation layer to each other.

20. The touch detection device of claim 16,

wherein the sensing signal comprises information on a capacitance which is formed between the first electrode and the second electrode and changes depending on the touch,

and wherein the sensing unit receives the sensing signal, and then detects a position of the touch.

21. The touch detection device of claim 16,

wherein the touch sensor panel further comprises a plurality of third electrodes which are located on the second insulation layer, while being spaced from the second electrode, and extend in the first axial direction,

wherein the sensing unit receives, from the third electrode, an additional sensing signal comprising information on a capacitance which is formed between the second electrode and the third electrode and changes depending on the touch, and then detects a position of the touch.

22. The touch detection device of claim 16,

wherein the touch sensor panel further comprises a plurality of third electrodes which are formed on a third insulation layer and extend in the first axial direction,

and wherein the sensing unit receives, from the third electrode, an additional sensing signal comprising information on a capacitance which is formed between the second electrode and the third electrode and changes depending on the touch, and then detects a position of the touch.

23. The touch detection device of claim 16,

wherein the touch sensor panel further comprises:

a plurality of third electrodes which are formed on a third insulation layer and extend in one of the first and second axial directions; and

a plurality of fourth electrodes which are formed on an additional insulation layer and extend in the other of the first and second axial directions,

wherein the drive unit applies an additional drive signal to one of the third and fourth electrodes,

and wherein the sensing unit receives, from the other of the third and fourth electrodes, an additional sensing signal comprising information on a capacitance which is formed between the third electrode and the fourth electrode and changes depending on the touch, and then detects a position of the touch.