Electroluminescent Display Touch Panel

• US 20100001965A1
• Filed: 11/27/2008
• Published: 01/07/2010
• Est. Priority Date: 07/04/2008
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Hsieh, Yao-Jen, Chia, Pang-Chiang, Wang, Chao-Chen, Tsai, Yu-Cheng, Chou, Heng-Sheng
• Granted Patent: US 8,368,656 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

An electroluminescent display touch panel includes a base substrate and an encapsulating substrate. The base substrate includes a pixel switching device, a readout device, an electroluminescent device, and a sensing pad. The pixel switching device and the electroluminescent device are disposed in a display region. The readout device and the sensing pad are disposed in a non-display region. The encapsulating substrate includes a first spacer, a sensing spacer, and a conductive layer. The first spacer is disposed on the surface of the encapsulating substrate facing the base substrate, maintaining a cell gap between the base substrate and the encapsulating substrate. The sensing spacer is disposed on the surface of the encapsulating substrate facing the base substrate and corresponding to the sensing pad. The conductive layer is formed on the surface of the sensing spacer facing the sensing pad.

Claims

1. An electroluminescent display touch panel comprising:

a base substrate having a display region and a non-display region defined thereon, the base substrate comprising;

a pixel switching device disposed in the display region of the base substrate;

a readout device disposed in the non-display region of the base substrate;

an electroluminescent device disposed in the display region, the electroluminescent device comprising a first electrode, a second electrode and an Illumination element disposed between the first electrode and the second electrode, wherein the first electrode is electrically connected with the pixel switching device;

a sensing pad disposed in the non-display region of the base substrate and electrically connected with the readout device; and

an encapsulating substrate disposed opposite to the base substrate, the encapsulating substrate comprising;

at least a first spacer disposed on a surface of the encapsulating substrate facing the base substrate, maintaining a cell gap between the base substrate and the encapsulating substrate;

a sensing spacer disposed on the surface of the encapsulating substrate facing the base substrate and corresponding to the sensing pad; and

a conductive layer disposed on a surface of the sensing spacer facing the sensing pad.

2. The electroluminescent display touch panel of claim 1, further comprising a power source line electrically connected to the second electrode.

3. The electroluminescent display touch panel of claim 1, wherein the electroluminescent device comprises an organic light-emitting diode (OLED) device.

4. The electroluminescent display touch panel of claim 3, wherein the organic light-emitting device comprises an electron-transporting layer, an organic light-emitting layer and a hole-transporting layer.

5. The electroluminescent display touch panel of claim 1, wherein the conductive layer covers a surface of the encapsulating substrate facing the base substrate.

6. The electroluminescent display touch panel of claim 1, wherein the conductive layer covers a sidewall of the sensing spacer.

7. The electroluminescent display touch panel of claim 1, wherein the first spacer has substantially the same height with the sensing spacer.

8. The electroluminescent display touch panel of claim 7, wherein the base substrate has a first thickness corresponding to the first spacer.

9. The electroluminescent display touch panel of claim 8, further comprising at least a second spacer disposed on a side of the encapsulating substrate facing the base substrate, wherein the base substrate has a second thickness corresponding to the second spacer.

10. The electroluminescent display touch panel of claim 9, wherein the base substrate has a third thickness corresponding to the sensing spacer.

11. The electroluminescent display touch panel of claim 10, wherein the first thickness is thicker than the second thickness and third thickness.

12. The electroluminescent display touch panel of claim 1, wherein a material of the sensing spacer comprises elastic materials.

13. The electroluminescent display touch panel of claim 1, further comprising a sealant connected between the base substrate and the encapsulating substrate.

14. The electroluminescent display touch panel of claim 1, wherein the conductive layer is electrically connected with a common voltage.

15. An electroluminescent display touch panel comprising:

a first substrate having a display region and a non-display region defined thereon, the first substrate comprising;

a pixel switching device disposed in the display region of the first substrate;

a readout device disposed in the non-display region of the first substrate;

an electroluminescent device disposed in the display region, wherein the electroluminescent device is electrically connected with the pixel switching device;

a sensing pad disposed in the non-display region of the first substrate and electrically connected with the readout device; and

a second substrate disposed opposite to the first substrate, the second substrate comprising;

at least a first spacer disposed on a surface of the second substrate facing the first substrate, maintaining a cell gap between the first substrate and the second substrate;

a sensing spacer disposed on the surface of the second substrate facing the first substrate and corresponding to the sensing pad; and

a conductive layer disposed on a surface of the sensing spacer facing the sensing pad.