Noise reduction capacitive touch control panel

• US 20170017343A1
• Filed: 07/17/2015
• Published: 01/19/2017
• Est. Priority Date: 07/17/2015
• Status: Abandoned Application

• Current Assignee: Inputek Co. Ltd.
• Original Assignee: Inputek Co. Ltd.
• Inventors: CHEN, Chi Chin, LEE, Wen Yi, WU, Chia Wei, CHUNG, Chang Kuang, LIN, Tse Yen
• Application Number:
  US14/802,640
• Publication Number:
  US 20170017343A1
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 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 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• 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

A noise reduction capacitive touch panel comprises a sensing area, a non-sensing area, a main body, a plurality of driving electrodes, a plurality of driving electrode wires, a plurality of sensing electrodes, a plurality of sensing electrode wires, at least one noise sensing electrodes and at least noise sensing electrode wires. The sensing area is located in the middle of the panel and the rest area of the panel is the non-sensing area. The main body is a flat board having a normal line. The driving electrodes are strip electrodes and disposed on the main body. The driving electrodes are perpendicular to the normal line. The driving electrodes wires are disposed on the main body. The sensing electrodes are strip electrodes and disposed on the main body. Capacitive coupling is occurred between the driving electrodes and the sensing electrodes because there is a distance between them.

Claims

1. A noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area, comprising:

a main body;

a plurality of driving electrodes;

a plurality of driving electrode wires;

a plurality of sensing electrodes;

a plurality of sensing electrode wires;

at least one noise sensing electrodes;

at least one noise sensing electrode wires;

said main body being a flat board comprising a normal line;

said driving electrodes being strip electrodes;

said driving electrodes disposed on said main body parallel to each other;

said driving electrodes being perpendicular to said normal line;

each side of said driving electrodes being electronically connected with one of said driving electrode wires;

said sensing electrodes being strip electrodes;

said sensing electrodes disposed on said main body parallel to each other;

said sensing electrodes being perpendicular to said normal line;

the extending direction of said sensing electrodes being perpendicular to the extending direction of said driving electrodes;

said sensing electrodes and said driving electrodes spaced a predetermined distance;

the intersection points of said driving electrodes and said sensing electrodes being located within said sensing area;

each side of said sensing electrodes being electronically connected with one of said sensing electrode wires;

said noise sensing electrodes being strip electrodes;

said noise sensing electrodes disposed on said main body and located in said non-sensing area;

said noise sensing electrode being perpendicular to said normal line;

said noise sensing electrode and said driving electrodes intersect and spaced a predetermined distance; and

said at least one noise sensing electrode wires electronically connect to each side of said noise sensing electrode respectively.

2. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 1, comprising:

said main body comprises a top board and a bottom board;

said bottom board located below said top board;

said driving electrodes and said driving electrode wires disposed on said bottom board of said main body; and

said sensing electrodes, said sensing electrode wires, said noise sensing electrodes, and said noise sensing electrode wires disposed on said top board of said main body.

3. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 2, comprising:

a micro controller unit (MCU);

said micro controller unit electronically connects with said driving electrode wires, said sensing electrode wires, and said noise sensing electrode wires;

said micro controller unit send driving signal to said driving electrodes through said driving electrode wires;

said micro controller unit receive sensing signal from said sensing electrodes through said sensing electrode wires;

said micro controller unit receive noise signal from said noise sensing electrodes through said noise sensing electrode wires; and

said micro controller unit subtracts said noise signal from said sensing signal to reduce the noise.

4. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 1, comprising:

said main body comprises a top surface and a bottom surface;

said bottom surface located below said top board;

said driving electrodes and said driving electrode wires disposed on said bottom surface of said main body; and

said sensing electrodes, said sensing electrode wires, said noise sensing electrodes, and said noise sensing electrode wires disposed on said top surface of said main body.

5. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 4, comprising:

a micro controller unit (MCU);

said micro controller unit electronically connects with said driving electrode wires, said sensing electrode wires, and said noise sensing electrode wires;

said micro controller unit send driving signal to said driving electrodes through said driving electrode wires;

said micro controller unit receive sensing signal from said sensing electrodes through said sensing electrode wires;

said micro controller unit receive noise signal from said noise sensing electrodes through said noise sensing electrode wires; and

said micro controller unit subtracts said noise signal from said sensing signal to reduce the noise.

6. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 1, comprising:

said main body comprises a top surface;

said driving electrodes, said driving electrode wires, said sensing electrode wires, and said noise sensing electrode wires disposed on said top surface of said main body;

a plurality of first isolation layer;

said first isolation layer covers the driving electrodes in the crossing points of said sensing electrodes and said driving electrodes;

a plurality second isolation layer; and

said second isolation layer covers said driving electrodes in the crossing points of said noise sensing electrodes and said driving electrodes.

7. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 6, comprising:

a micro controller unit (MCU);

said micro controller unit electronically connects with said driving electrode wires, said sensing electrode wires, and said noise sensing electrode wires;

said micro controller unit send driving signal to said driving electrodes through said driving electrode wires;

said micro controller unit receive sensing signal from said sensing electrodes through said sensing electrode wires;

said micro controller unit receive noise signal from said noise sensing electrodes through said noise sensing electrode wires; and

said micro controller unit subtracts said noise signal from said sensing signal to reduce the noise.

8. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 6, comprising:

said sensing electrodes comprise a plurality of bridging segments and a plurality of flat segments;

said flat segments disposed on said top surface of said main body and located on each side of each said driving electrodes;

said bridging segments disposed on said top surface of said first isolation layer and located above said driving electrodes;

each side of said bridging segment connect with one said flat segment;

said noise sensing electrodes comprise a plurality of bridging segments and a plurality of flat segments;

said flat segments disposed on said top surface of said main body and located on each side of each said driving electrodes;

said bridging segments disposed on said top surface of said second isolation layer and located above said driving electrodes; and

each side of said bridging segment connected with one said flat segment.

9. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 8, comprising:

the intersection area of said bridging segments and said driving electrodes being covered by said sensing area.

10. A noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area, comprising:

a main body;

a plurality of driving electrodes;

a plurality of driving electrode wires;

a plurality of sensing electrodes;

a plurality of sensing electrode wires;

at least one noise sensing electrodes;

every said driving electrodes wire comprises a wire end;

at least one noise sensing electrode wires;

said main body being a flat board comprising a normal line;

said driving electrodes being strip electrodes;

said driving electrodes disposed on said main body parallel to each other;

said driving electrodes being perpendicular to said normal line;

each side of said driving electrodes being electronically connected with one of said wire end of said driving electrode wires;

said sensing electrodes being strip electrodes;

said sensing electrodes disposed on said main body parallel to each other;

said sensing electrodes being perpendicular to said normal line;

the extending direction of said sensing electrodes being perpendicular to the extending direction of said driving electrodes;

said sensing electrodes and said driving electrodes spaced a predetermined distance;

the intersection points of said driving electrodes and said sensing electrodes being located within said sensing area;

each side of said sensing electrodes being electronically connected with one of said sensing electrode wires;

said noise sensing electrodes being strip electrodes;

said noise sensing electrodes disposed on said main body and located in said non-sensing area;

said noise sensing electrode being perpendicular to said normal line;

said noise sensing electrode and said driving electrodes intersect and spaced a predetermined distance; and

said at least two noise sensing electrode wires electronically connect to each side of said noise sensing electrode respectively.

11. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 10, comprising:

said main body comprises a top board and a bottom board;

said bottom board located below said top board;

said driving electrodes and said driving electrode wires disposed on said bottom board of said main body; and

said sensing electrodes, said sensing electrode wires, said noise sensing electrodes, and said noise sensing electrode wires disposed on said top board of said main body.

12. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 11, comprising:

a micro controller unit (MCU);

said micro controller unit electronically connects with said driving electrode wires, said sensing electrode wires, and said noise sensing electrode wires;

said micro controller unit send driving signal to said driving electrodes through said driving electrode wires;

said micro controller unit receive sensing signal from said sensing electrodes through said sensing electrode wires;

said micro controller unit receive noise signal from said noise sensing electrodes through said noise sensing electrode wires; and

said micro controller unit subtracts said noise signal from said sensing signal to reduce the noise.

13. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 10, comprising:

said main body comprises a top surface and a bottom surface;

said bottom surface located below said top board;

said driving electrodes and said driving electrode wires disposed on said bottom surface of said main body; and

said sensing electrodes, said sensing electrode wires, said noise sensing electrodes, and said noise sensing electrode wires disposed on said top surface of said main body.

14. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 13, comprising:

a micro controller unit (MCU);

said micro controller unit electronically connects with said driving electrode wires, said sensing electrode wires, and said noise sensing electrode wires;

said micro controller unit send driving signal to said driving electrodes through said driving electrode wires;

said micro controller unit receive sensing signal from said sensing electrodes through said sensing electrode wires;

said micro controller unit receive noise signal from said noise sensing electrodes through said noise sensing electrode wires; and

said micro controller unit subtracts said noise signal from said sensing signal to reduce the noise.

15. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 10, comprising:

said main body comprises a top surface;

said driving electrodes, said driving electrode wires, said sensing electrode wires, and said noise sensing electrode wires disposed on said top surface of said main body;

a plurality of first isolation layer;

said first isolation layer covers the driving electrodes in the crossing points of said sensing electrodes and said driving electrodes;

a plurality second isolation layer; and

said second isolation layer covers said driving electrodes in the crossing points of said noise sensing electrodes and said driving electrodes.

16. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 15, comprising:

a micro controller unit (MCU);

said micro controller unit electronically connects with said driving electrode wires, said sensing electrode wires, and said noise sensing electrode wires;

said micro controller unit send driving signal to said driving electrodes through said driving electrode wires;

said micro controller unit receive sensing signal from said sensing electrodes through said sensing electrode wires;

said micro controller unit receive noise signal from said noise sensing electrodes through said noise sensing electrode wires; and

said micro controller unit subtracts said noise signal from said sensing signal to reduce the noise.

17. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 15, comprising:

said sensing electrodes comprise a plurality of bridging segments and a plurality of flat segments;

said flat segments disposed on said top surface of said main body and located on each side of each said driving electrodes;

said bridging segments disposed on said top surface of said first isolation layer and located above said driving electrodes;

each side of said bridging segment connect with one said flat segment;

said noise sensing electrodes comprise a plurality of bridging segments and a plurality of flat segments;

said flat segments disposed on said top surface of said main body and located on each side of each said driving electrodes;

said bridging segments disposed on said top surface of said second isolation layer and located above said driving electrodes;

each side of said bridging segment connected with one said flat segment; and

the intersection area of said bridging segments and said driving electrodes being covered by said sensing area.

18. The noise reduction capacitive touch control panel, the middle of it has a sensing area and the rest area of the panel is a non-sensing area of claim 10, comprising:

wire width of said wire end being greater than other part of said driving electrode wires.