PROXIMITY/MOTION AND TOUCH SENSOR AND DISPLAY DEVICE HAVING THE SAME

• US 20130293489A1
• Filed: 12/13/2012
• Published: 11/07/2013
• Est. Priority Date: 05/04/2012
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Shin, Seungrok, Kim, Taeyun
• Granted Patent: US 9,141,210 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

This disclosure relates to a proximity/motion and touch sensor. The proximity/motion and touch sensor includes a proximity/motion driving electrode, a plurality of first proximity/motion sensing electrode, a plurality of second proximity/motion sensing electrode serials, a plurality of first touch electrode serials, and a plurality of second touch electrode serials.

Claims

1. A proximity/motion and touch sensor, comprising:

a proximity/motion driving electrode;

a plurality of first proximity/motion sensing electrode serials insulated from the proximity/motion driving electrode and arranged in a first direction to be separated from each other;

a plurality of second proximity/motion sensing electrode serials insulated from the proximity/motion driving electrode and arranged in a second direction to be separated from each other, the first direction being substantially perpendicular to the second direction;

a plurality of first touch electrode serials insulated from the first proximity/motion sensing electrode serials and arranged in the first direction to be separated from each other; and

a plurality of second touch electrode serials insulated from the first proximity/motion sensing electrode serials and the first touch electrode serials and arranged in the second direction to be separated from each other.

2. The proximity/motion and touch sensor of claim 1, wherein the plurality of first proximity/motion sensing electrode serials are uppermost and lowermost first touch electrode serials among the plurality of first touch electrode serials, and

the plurality of second proximity/motion sensing electrode serials are leftmost and rightmost second touch electrode serials among the plurality of second touch electrode serials.

3. The proximity/motion and touch sensor of claim 1, wherein the plurality of first proximity/motion sensing electrode serials are disposed at outside uppermost and lowermost first touch electrode serials among the plurality of first touch electrode serials, and

the plurality of second proximity/motion sensing electrode serials are disposed at outside leftmost and rightmost second touch electrode serials among the plurality of second touch electrode serials.

4. The proximity/motion and touch sensor of claim 2, further comprising:

a proximity/motion controller that supplies a proximity/motion driving voltage to the proximity/motion driving electrode and is coupled to the uppermost and lowermost first touch electrode serials and the leftmost and rightmost second touch electrode serials; and

a touch controller that supplies a touch driving voltage to the first touch electrode serials and is coupled to the plurality of the second touch electrode serials.

5. The proximity/motion and touch sensor of claim 3, further comprising:

a proximity/motion controller that supplies a proximity/motion driving voltage to the proximity/motion driving electrode and is coupled to the first and second proximity/motion sensing electrode serials; and

a touch controller that supplies a touch driving voltage to the first touch electrode serials and is coupled to the plurality of the second touch electrode serials.

6. The proximity/motion and touch sensor of claim 2,

wherein the proximity/motion driving electrode is formed on a first surface of a substrate, and

the first and second touch electrode serials are formed on a second surface of the substrate and insulated from each other by an insulation layer.

7. The proximity/motion and touch sensor of claim 6, further comprising a polarization plate formed between the substrate and the proximity/motion driving electrode.

8. The proximity/motion and touch sensor of claim 3,

wherein the proximity/motion driving electrode is formed on a first surface of a substrate,

the first and second proximity/motion sensing electrode serials are formed on a second surface of the substrate to separated from each other,

the first touch electrode serials are insulate from the second touch electrode serials by an insulation layer, and

the first and second touch electrode serials are formed on the second surface of the substrate to be separated from the first and second proximity/motion sensing electrode serials.

9. The proximity/motion and touch sensor of claim 8, further comprising a polarization plate formed between the substrate and the proximity/motion driving electrode.

10. The proximity/motion and touch sensor of claim 2,

wherein the first touch electrode serials are formed on a first surface of a substrate,

the proximity/motion driving electrode are formed on an insulation or a polarization plate covering the first touch electrode serials, and

the second touch electrode serials are formed on a second surface of the substrate.

11. The proximity/motion and touch sensor of claim 3,

wherein the first touch electrode serials and the first proximity/motion sensing electrode serials are formed on a first surface of a substrate to be separated from each other,

the proximity/motion driving electrode is formed on an insulation layer or a polarization plate covering the first touch electrode serials, and

the second touch electrode serials and the second proximity/motion sensing electrode serials are formed on a second surface of the substrate to be separated from each other.

12. The proximity/motion and touch sensor of claim 2,

wherein the proximity/motion driving electrode is formed on a first surface of a first substrate,

the first touch electrode serials are formed on a second surface of the first substrate, and

the second touch electrode serials are formed on an opposite surface of a second substrate opposite to the first touch electrode serials formed on the first substrate.

13. The proximity/motion and touch sensor of claim 3,

wherein the proximity/motion driving electrode is formed on a first surface of a first substrate,

the first touch electrode serials and the first proximity/motion sensing electrode serials are formed on the first surface of the first substrate to be separated from each other, and

the second touch electrode serials and the second proximity/motion sensing electrode serials are formed on an opposite surface of a second substrate opposite to the first touch electrode serials formed on the first substrate.

14. The proximity/motion and touch sensor of claim 12, further comprising a polarization plate formed between the first substrate and the proximity/motion driving electrode.

15. The proximity/motion and touch sensor of claim 2,

wherein the proximity/motion driving electrode is formed on a first surface of a substrate,

the first touch electrode serials are formed on a second surface of the substrate, and

the second touch electrode serials are formed on a surface of a window cover opposite to the first touch electrode serials formed on the substrate.

16. The proximity/motion and touch sensor of claim 3,

wherein the proximity/motion driving electrode is formed on a first surface of a substrate,

the first touch electrode serials and the first proximity/motion sensing electrode serials are formed on a second surface of the substrate to be separated from each other, and

the second touch electrode serials and the second proximity/motion sensing electrode serials are formed on a surface of the window cover opposite to the first touch electrode serials formed on the substrate.

17. The proximity/motion and touch sensor of claim 15, further comprising a polarization plate formed between the substrate and the proximity/motion driving electrode.

18. The proximity/motion and touch sensor of claim 2,

wherein the first touch electrode serials are formed on a window cover,

the second touch electrode serials are formed on an insulation layer covering the first touch electrode serials, and

the proximity/motion driving electrode is formed on the touch electrode serials with an insulation layer or a polarization plate therebetween.

19. The proximity/motion and touch sensor of claim 3,

wherein the first touch electrode serials and the first proximity/motion sensing electrode serials are formed on a window cover to be separated from each other,

the second touch electrode serials are formed on an insulation layer covering the first touch electrode serials, and

the proximity/motion driving electrode is formed on the second touch electrode serials with an insulation layer or a polarization plate therebetween.