Touch-Sensitive Display Panel

• US 20110109579A1
• Filed: 11/12/2010
• Published: 05/12/2011
• Est. Priority Date: 11/12/2009
• Status: Active Grant

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Li, Jyun-Sian, Hsu, Ching-Fu, Wang, Po-Hsien, Lai, Chih-Chang
• Granted Patent: US 8,289,294 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display

Abstract

A touch-sensitive display panel including a first substrate, a second substrate, an active pixel matrix, many driving circuits, many sensing electrodes and many color filter layers is provided. The active pixel matrix includes many pixels. The second substrate has a first surface and a second surface, wherein the first surface faces the active pixel matrix. The driving circuits are corresponding to the edges of the pixels for forming many openings. Each driving circuit includes a first main line and a second main line. The first main line has a first end connected to the active pixel matrix and a second end connected to the first substrate. The second main line is connected to the second end of the first main line through the first substrate. The color filter layers are filled in the openings. The sensing electrodes and the driving circuits are used for detecting at least one touch point.

Claims

1. A touch-sensitive display panel, comprising:

a first substrate;

an active pixel matrix disposed on the first substrate and comprising a plurality of pixels;

a second substrate parallel to the first substrate and comprising a first surface and a second surface, wherein the first surface faces the active pixel matrix;

a plurality of driving circuits disposed on the first surface and corresponding to the edges of the pixels for forming a plurality of openings, and each of the driving circuits comprises;

a first main line having a first end connected to the active pixel matrix and a second end connected to the first substrate; and

a second main line connected to the second end of the first main line through the first substrate, wherein the extension direction of the second main line is consistent to that of a part of the first main line;

a plurality of color filter layers disposed on the first surface and filled in the openings; and

a plurality of sensing electrodes disposed on the second surface, wherein the driving circuits and the sensing electrodes are used for detecting the position of at least one touch point.

2. The touch-sensitive display panel according to claim 1, wherein the pixels are disposed within a visible region of the touch-sensitive display panel, the active pixel matrix further comprises a plurality of scan lines corresponding to the visible region and extended outside the visible region, and the first ends of the first main lines are connected to the scan lines outside the visible region for receiving a scan signal of the scan lines.

3. The touch-sensitive display panel according to claim 2, further comprising:

a plurality of first conductive spacers disposed on the first ends;

a plurality of second conductive spacers disposed on the second ends; and

a plurality of third conductive spacers connected to the second main lines.

4. The touch-sensitive display panel according to claim 3, wherein the second conductive spacers and the third conductive spacers are connected through the scan lines within the visible region.

5. The touch-sensitive display panel according to claim 3, wherein:

the first conductive spacers are located at a first edge of the visible region,

the second conductive spacers are located at a second edge of the visible region,

the third conductive spacers are located at a third edge of the visible region, wherein the second edge is perpendicular to the first edge, and the third edge is parallel to the second edge.

6. The touch-sensitive display panel according to claim 1, wherein each of the first main lines is an L line, and each of the second main lines is a straight line.

7. The touch-sensitive display panel according to claim 6, wherein the L lines are separated at an equal distance, and every two adjacent L lines are interspaced by a single pixel.

8. The touch-sensitive display panel according to claim 6, wherein a unit defined by n×

n pixels is arranged on a diagonal direction of the L lines, a part of the sensing electrodes corresponds to at least n×

n pixels on the diagonal direction.

9. The touch-sensitive display panel according to claim 1, wherein each of the driving circuits further comprises a plurality of branch lines being connected to the first main lines and the second main lines and perpendicular to the first main lines and the second main lines.

10. The touch-sensitive display panel according to claim 1, wherein each of the sensing electrodes is a block electrode, and at least a part of the block electrodes has the same area.

11. The touch-sensitive display panel according to claim 10, wherein the block electrodes with the same area are corresponding to the second main lines.

12. The touch-sensitive display panel according to claim 1, wherein an edge of each of the sensing electrodes has a conducting lead formed by a transparent conductive material or a metal.