TOUCH DISPLAY PANEL

• US 20110175846A1
• Filed: 11/22/2010
• Published: 07/21/2011
• Est. Priority Date: 01/21/2010
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Wang, Po-Hsien, Lai, Chih-Chang
• Application Number:
  US12/951,077
• Publication Number:
  US 20110175846A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A touch display panel including a cover plate, a plurality of touch sensing electrodes and a display panel is provided. The touch sensing electrodes are disposed on a surface of the cover plate. The display panel is adhered to the cover plate via an adhesion layer, and includes a substrate, a plurality of scan lines, an opposite substrate parallel to the substrate and a display medium layer disposed between the substrate and the opposite substrate. The touch sensing electrodes are disposed between the cover plate and the substrate. The scan lines are disposed on a surface of the substrate, wherein the scan lines and the touch sensing electrodes are disposed at different sides of the substrate and a sensing capacitance is formed between the touch sensing electrodes and the scan lines.

Claims

1. A touch display panel, comprising:

a cover plate;

a plurality of touch sensing electrodes, disposed on a surface of the cover plate; and

a display panel, adhered to the cover plate via an adhesion layer, and comprising;

a substrate, wherein the touch sensing electrodes are disposed between the cover plate and the substrate;

a plurality of scan lines, disposed on a side of the substrate, the scan lines and the touch sensing electrodes disposed at different sides of the substrate, and a sensing capacitance being formed between the touch sensing electrodes and the scan lines;

an opposite substrate, parallel to the substrate; and

a display medium layer, disposed between the substrate and the opposite substrate.

2. The touch display panel as claimed in claim 1, wherein the scan lines comprise a plurality of gate lines.

3. The touch display panel as claimed in claim 2, wherein the display panel further comprises a plurality of data lines and a plurality of pixel structures disposed on the substrate, each of the pixel structures is connected to one of the gate lines and one of the data lines, and a space between two adjacent touch sensing electrodes corresponds to one of the data lines.

4. The touch display panel as claimed in claim 3, wherein each of the touch sensing electrodes has at least one strip opening, and the strip opening corresponds to one of the data lines.

5. The touch display panel as claimed in claim 1, wherein the scan lines comprise a plurality of light-shielding patterns separated from each other, and the light-shielding patterns form a mesh light-shielding structure.

6. The touch display panel as claimed in claim 5, wherein the display panel further comprises a plurality of color filter patterns disposed in the mesh light-shielding structure.

7. The touch display panel as claimed in claim 5, wherein a shape of each of the light-shielding patterns comprises a comb-shape or a fishbone-shape.

8. The touch display panel as claimed in claim 5, wherein a material of the light-shielding patterns comprises chromium, chromium oxide or resin.

9. The touch display panel as claimed in claim 5, further comprising a pixel array disposed on the opposite substrate, the pixel array comprising a plurality of gate lines, and an extending direction of the gate lines being parallel to an extending direction of the scan lines.

10. The touch display panel as claimed in claim 9, wherein each of the scan lines is connected to one of the gate lines in the pixel array through a conductive element.

11. The touch display panel as claimed in claim 10, wherein the conductive element comprises a conductive spacer disposed between the substrate and the opposite substrate.

12. The touch display panel as claimed in claim 1, wherein each of the touch sensing electrodes crosses over the scan lines.

13. The touch display panel as claimed in claim 1, further comprising a plurality of dummy electrodes, located at a same film layer with that of the touch sensing electrodes, and disposed between two adjacent touch sensing electrodes.

14. The touch display panel as claimed in claim 1, further comprising a polarizer disposed on an outer surface of the substrate, and disposed between the substrate and the adhesion layer.

15. The touch display panel as claimed in claim 1, further comprising a polarizer disposed on an outer surface of the opposite substrate, wherein the opposite substrate is located between the display medium layer and the polarizer.

16. The touch display panel as claimed in claim 1, wherein a material of the touch sensing electrodes comprises indium tin oxide, indium antimony oxide or indium zinc oxide.

17. The touch display panel as claimed in claim 1, wherein a material of the display medium layer comprises a liquid crystal material, a plasma material, an organic light emitting display material or an electrophoresis material.

18. The touch display panel as claimed in claim 1, wherein the cover plate is a cover lens.