TOUCH PANEL AND TOUCH DISPLAY PANEL

• US 20140085261A1
• Filed: 09/27/2013
• Published: 03/27/2014
• Est. Priority Date: 09/27/2012
• Status: Abandoned Application

• Current Assignee: Wintek China Technology Ltd., Wintek Corporation
• Original Assignee: Wintek China Technology Ltd., Wintek Corporation
• Inventors: Chan, Hsiu-Lin, Su, Kuo-Chang, Su, Chen-Hao, Chen, Yu-Ting, Lu, Chun-Cheng
• Application Number:
  US14/038,752
• Publication Number:
  US 20140085261A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A touch panel including a substrate, a decoration layer and a first touch unit is provided. The decoration layer is disposed on the substrate, wherein the decoration layer has a window, and the location of the decoration layer is defined as a peripheral region. The first touch unit is at least disposed within the window, and the first touch unit has a plurality of electrode pairs. The electrode pairs are disposed on the substrate. Each of the electrode pairs includes a driving electrode and a sensing electrode. The driving electrode and the sensing electrode are separated by a distance, and the distance is between 300 micrometers and 900 micrometers.

Claims

1. A touch panel, comprising:

a substrate;

a decoration layer, disposed on the substrate, wherein the decoration layer has a window; and

a first touch unit, at least disposed within the window, wherein the first touch unit has a plurality of electrode pairs and the electrode pairs are disposed on the substrate, each of the electrode pairs comprises a driving electrode and a sensing electrode, the driving electrode and the sensing electrode are separated by a distance, and the distance is between 300 micrometers and 900 micrometers.

2. The touch panel as claimed in claim 1, wherein the location of the decoration layer is defined as a periphery region.

3. The touch panel as claimed in claim 1, wherein the distance is between 600 micrometers and 900 micrometers.

4. The touch panel as claimed in claim 1, further comprising a plurality of first connecting portions and a plurality of second connecting portions, each of the first connecting portions is located between the two adjacent driving electrodes so as to connect the driving electrodes in series through the first connecting portions along a first direction to define a plurality of first sensing series, and each of the second connecting portions is located between the two adjacent sensing electrodes so as to connect the sensing electrodes in series through the second connecting portions along a second direction to define a plurality of second sensing series, and the plurality of first sensing series and the plurality of second sensing series are insulated form each other.

5. The touch panel as claimed in claim 1, wherein the driving electrode and the sensing electrode in each of the electrode pairs are arranged in a rectangular arrangement, a paper-clip shape arrangement, an annular arrangement or a interdigitated-finger shape arrangement.

6. The touch panel as claimed in claim 1, further comprising an opposite substrate and an insulating layer, wherein the insulating layer is located between the substrate and the opposite substrate, and the insulating layer covers the electrode pairs.

7. The touch panel as claimed in claim 1, further comprising an electrostatic protective ring disposed on edges of the substrate and surrounded the electrode pairs.

17. A touch display panel, comprising:

the touch panel as claimed in claim 1;

a display panel, disposed below the touch panel; and

an optical adhesive, disposed between the display panel and the touch panel.

8. A touch panel, comprising:

a substrate;

a decoration layer, disposed on the substrate, wherein the decoration layer has a window;

a first touch unit, at least disposed within the window; and

at least one second touch unit, disposed on the decoration layer, wherein the second touch unit has a plurality of electrode pairs and the electrode pairs are disposed on the substrate, each of the electrode pairs comprises a driving electrode and a sensing electrode, the driving electrode and the sensing electrode are separated by a distance, and the distance is between 300 micrometers and 900 micrometers.

9. The touch panel as claimed in claim 8, wherein the location of the decoration layer is defined as a periphery region.

10. The touch panel as claimed in claim 8, wherein a ratio of an area of the driving electrode and an area of the sensing electrode is between 0.7 and 0.75.

11. The touch panel as claimed in claim 8, wherein the distance is between 600 micrometers and 900 micrometers.

12. The touch panel as claimed in claim 8, wherein the first touch unit comprises a plurality of sensing electrodes and a plurality of driving electrodes, and the touch panel further comprises a plurality of first connecting portions and a plurality of second connecting portions, each of the first connecting portions is located between the two adjacent sensing electrodes so as to connect the sensing electrodes in series through the first connecting portions along a first direction to define a plurality of first sensing series, and each of the second connecting portions is located between the two adjacent driving electrodes so as to connect the driving electrodes in series through the second connecting portions along a second direction to define a plurality of second sensing series, and the plurality of first sensing series and the plurality of second sensing series are insulated form each other.

13. The touch panel as claimed in claim 8, wherein the driving electrode and the sensing electrode in each of the electrode pairs are arranged in a rectangular arrangement, a paper-clip shape arrangement, an annular arrangement or a interdigitated-finger shape arrangement.

14. The touch panel as claimed in claim 8, further comprising an opposite substrate and an insulating layer, wherein the insulating layer is located between the substrate and the opposite substrate, and the insulating layer covers the electrode pairs.

15. The touch panel as claimed in claim 8, further comprising an electrostatic protective ring disposed on edges of the substrate and surrounded the electrode pairs.

16. The touch panel as claimed in claim 8, wherein the first touch unit extends to the periphery region.

18. A touch display panel, comprising:

the touch panel as claimed in claim 8;

a display panel, disposed below the touch panel; and

an optical adhesive, disposed between the display panel and the touch panel.