TOUCH-SENSITIVE DISPLAY PANEL

• US 20130009894A1
• Filed: 07/05/2012
• Published: 01/10/2013
• Est. Priority Date: 07/07/2011
• Status: Abandoned Application

• Current Assignee: Wintek China Technology Ltd., Wintek Corporation
• Original Assignee: Wintek China Technology Ltd., Wintek Corporation
• Inventors: Wang, Po-Hsien, Wang, Wen-Chun, Chang, Yung-Cheng
• Application Number:
  US13/542,603
• Publication Number:
  US 20130009894A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads

Abstract

A touch-sensitive display panel including a first panel, a second panel and a spacer layer is provided. The first panel has a touch-sensitive area. The second panel, parallel to the first panel, has a display area correspondingly located below the touch-sensitive area. The spacer layer is disposed between the first panel and the second panel and includes a plurality of conductive spacers for electrically connecting the first panel and the second panel.

Claims

1. A touch-sensitive display panel, comprising:

a first panel having a touch-sensitive area;

a second panel parallel to the first panel and having a display area correspondingly located below the touch-sensitive area; and

a spacer layer disposed between the first panel and the second panel, wherein the spacer layer comprises a plurality of conductive spacers for electrically connecting the first panel and the second panel.

2. The touch-sensitive display panel according to claim 1, wherein the first panel comprises a first substrate and a plurality of sensing electrodes disposed inside the touch-sensitive area for detecting the coordinate position of a touch signal on two intersecting directions.

3. The touch-sensitive display panel according to claim 2, wherein the sensing electrodes comprise:

a plurality of connected first electrode blocks disposed on the first substrate along a first direction;

a plurality of connected second electrode blocks disposed on the first substrate along a second direction, wherein the second direction is perpendicular to the first direction; and

an insulation material disposed at the intersections between the first electrode blocks and the second electrode blocks.

4. The touch-sensitive display panel according to claim 2, further comprising a first conductive layer disposed around the touch-sensitive area and electrically connected to the conductive spacers.

5. The touch-sensitive display panel according to claim 4, wherein the first panel comprises a passivation layer covering the sensing electrodes, the passivation layer comprises a plurality of through holes, and the first conductive layer is electrically connected to corresponding sensing electrodes via one of the through holes.

6. The touch-sensitive display panel according to claim 1, wherein the second panel comprises a second substrate and a pixel array, the pixel array is disposed on the display area, and the pixel array comprises an array formed by a plurality of pixel units.

7. The touch-sensitive display panel according to claim 6, wherein each pixel unit comprises a plurality of organic light emitting diodes.

8. The touch-sensitive display panel according to claim 6, further comprising a second conductive layer disposed around the display area and electrically connected to the conductive spacers.

9. The touch-sensitive display panel according to claim 8, wherein the second panel comprises an insulation layer disposed around the pixel units, the insulation layer comprises a plurality of through holes, and the second conductive layer is electrically connected to corresponding pixel units via one of the through holes.

10. The touch-sensitive display panel according to claim 1, wherein the spacer layer comprises a spacer wall surrounding the touch-sensitive area and being supported between the first panel and the second panel.

11. The touch-sensitive display panel according to claim 10, wherein the conductive spacers and the spacer wall are separated from each other.

12. The touch-sensitive display panel according to claim 10, wherein the conductive spacers and the spacer wall are connected in one piece.

13. The touch-sensitive display panel according to claim 1, wherein the conductive spacers are a conductive adhesive containing an anisotropic conductive material.

14. The touch-sensitive display panel according to claim 1, further comprising a control circuit disposed on the first panel or the second panel for receiving a touch signal detected by the first panel and outputting a corresponding display signal to the second panel.

15. The touch-sensitive display panel according to claim 12, wherein the control circuit comprises a display driver, a touch signal processor or a single chip formed by the display driver and the touch signal processor.