TOUCH PANEL AND TOUCH DISPLAY

• US 20140333847A1
• Filed: 08/12/2013
• Published: 11/13/2014
• Est. Priority Date: 05/09/2013
• Status: Active Grant

• Current Assignee: HannStar Display Corporation
• Original Assignee: HannStar Display Corporation
• Inventors: Yu, Chia-Hua, Lin, Yu-Cheng, Su, Ping-Yuan, Tsai, Kun-Hua, Lee, Hsing-Ying
• Granted Patent: US 8,970,550 B2
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G02F 2201/38 Anti-reflection arrangements
• CPC Class Codes: G06F 1/1692 the I/O peripheral being a secondary touch screen used as control interface, e.g. virtual buttons or sliders
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes

Abstract

A touch panel that includes a first substrate, a touch sensing layer, a compensation pattern layer, a second substrate, and a first optical adhesive layer is provided. The touch sensing layer includes a plurality of electrode sets arranged in parallel, and each of the electrode sets includes a scan electrode and a plurality of sensing electrodes. An orthogonal projection of the touch sensing layer on the first substrate is not overlapped with an orthogonal projection of the compensation pattern layer on the first substrate. The compensation pattern layer and the touch sensing layer are located between the first substrate and the second substrate. The first optical adhesive layer is located between the first substrate and the second substrate. A touch display is also provided.

Claims

1. A touch panel comprising:

a first substrate;

a touch sensing layer comprising a plurality of electrode sets arranged in parallel, each of the electrode sets comprising a scan electrode and a plurality of sensing electrodes;

a compensation pattern layer, wherein an orthogonal projection of the touch sensing layer on the first substrate is not overlapped with an orthogonal projection of the compensation pattern layer on the first substrate;

a second substrate, wherein the compensation pattern layer and the touch sensing layer are located between the first substrate and the second substrate; and

a first optical adhesive layer located between the first substrate and the second substrate.

2. The touch panel as recited in claim 1, wherein a region where the touch sensing layer is located has a reflectivity R1, a region where the compensation pattern layer is located has a reflectivity R2, and a difference between R1 and R2 is less than 1%.

3. The touch panel as recited in claim 1, wherein the compensation pattern layer and the touch sensing layer are both located on the second substrate.

4. The touch panel as recited in claim 1, wherein the first optical adhesive layer is located between the touch sensing layer and the compensation pattern layer.

5. The touch panel as recited in claim 1, wherein the touch sensing layer further comprises a plurality of connection lines and a plurality of connection pads, parts of the connection lines are connected between the scan electrodes and parts of the connection pads, and the other parts of the connection lines are connected between the sensing electrodes and the other parts of the connection pads.

6. A touch display comprising:

a display panel;

a first substrate located above the display panel;

a touch sensing layer comprising a plurality of electrode sets arranged in parallel, each of the electrode sets comprising a scan electrode and a plurality of sensing electrodes;

a compensation pattern layer, wherein an orthogonal projection of the touch sensing layer on the first substrate is not overlapped with an orthogonal projection of the compensation pattern layer on the first substrate, and the touch sensing layer and the compensation pattern layer are both located between the first substrate and the display panel; and

a first optical adhesive layer located between the first substrate and the display panel.

7. The touch display as recited in claim 6, wherein a region where the touch sensing layer is located has a reflectivity R1, a region where the compensation pattern layer is located has a reflectivity R2, and an absolute value of a difference between R1 and R2 is less than 1%.

8. The touch display as recited in claim 6, wherein the compensation pattern layer and the touch sensing layer are located between the display panel and the first optical adhesive layer.

9. The touch display as recited in claim 6, wherein the compensation pattern layer and the touch sensing layer are located at two respective sides of the first optical adhesive layer.

10. The touch display as recited in claim 6, wherein the touch sensing layer further comprises a plurality of connection lines and a plurality of connection pads, parts of the connection lines are connected between the scan electrodes and parts of the connection pads, and the other parts of the connection lines are connected between the sensing electrodes and the other parts of the connection pads.