Touch sensitive display and manufacturing method thereof

• US 9,348,439 B2
• Filed: 08/30/2011
• Issued: 05/24/2016
• Est. Priority Date: 06/15/2011
• Status: Active Grant

• Current Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Original Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Inventors: Liu, Chen-Yu
• Primary Examiner(s): Johnson, Gerald
• Assistant Examiner(s): MICHAUD, ROBERT J
• Application Number:
  US13/220,699
• Publication Number:
  US 20120319961A1
• Time in Patent Office: 1,729 Days
• Field of Search: 345/173, 345/174
• US Class Current: 1/1
• 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: Y10T 29/49002 Electrical device making

Abstract

The present invention relates to a touch sensitive display, which comprises a merged layer made of sensing electrodes and organic light-emitting electrodes. The touch sensitive display further comprises a first touch sensing layer and an organic light-emitting assembly, wherein the first touch sensing layer has a plurality of first sensing electrodes, which are formed onto a surface of an upper substrate. This organic light-emitting assembly is disposed on an upper surface of a lower substrate, and the merged layer is formed on the surface of the organic light-emitting assembly. The sensing electrodes that comprised in this merged layer are second sensing electrodes, while the organic light-emitting electrodes are counter electrodes which originally belong to the organic light-emitting assembly. In addition, the present invention also provides a manufacturing method of a touch sensitive display. Thereby, the present invention could reduce the manufacturing procedure and efficiently increase the yield rate of production.

Claims

1. A touch sensitive display, comprising:

a touch sensing assembly comprising a sensing electrode; and

an organic light-emitting assembly below the touch sensing assembly, the organic light-emitting assembly comprising an organic light-emitting electrode and an intermediate layer disposed below the organic light-emitting electrode, wherein the intermediate layer comprises an organic light-emitting layer;

wherein the sensing electrode and the organic light-emitting electrode are integrated into a merged layer, and a material of the sensing electrode is different from a material of the organic light-emitting electrode.

2. The touch sensitive display according to claim 1, wherein the material of the sensing electrode is metal oxide, and the material of the organic light-emitting electrode is metal.

3. The touch sensitive display according to claim 1, wherein the touch sensing assembly further comprises:

a first touch sensing layer having a plurality of first sensing electrodes and formed on a surface of an upper substrate, the organic light-emitting assembly disposed on a lower substrate;

wherein the merged layer is formed on the surface of the organic light-emitting assembly, the sensing electrode comprised in the merged layer comprises a plurality of second sensing electrodes, the organic light-emitting electrode comprised in the merged layer is a counter electrode of the organic light-emitting assembly.

4. The touch sensitive display according to claim 3, wherein the first touch sensing layer is formed on the upper surface of the upper substrate, and the merged layer is formed below the lower surface of the upper substrate as the top layer of the upper surface of the lower substrate.

5. The touch sensitive display according to claim 3, wherein the first touch sensing layer is formed on the lower surface of the upper substrate, and the merged layer is formed below the first touch sensing layer as the top layer of the upper surface of the lower substrate.

6. The touch sensitive display according to claim 3, further comprising a sealing layer formed in the peripheral area of the upper substrate and the lower substrate to make the upper substrate and the lower substrate oppositely formed as an assembly.

7. The touch sensitive display according to claim 3, wherein the organic light-emitting assembly further comprises at least a thin-film transistor element and a pixel electrode layer, which are integrally formed on the upper surface of the lower substrate.

8. The touch sensitive display according to claim 7, wherein the intermediate layer further comprises an electron injecting layer, an electron transfer layer, a hole transfer layer, and a hole injecting layer.

9. A method for manufacturing a touch sensitive display, comprising:

forming a touch sensing assembly, the touch assembly at least comprising a sensing electrode;

forming an organic light-emitting assembly under the touch sensing assembly, the organic light-emitting assembly at least comprising an organic light-emitting electrode and an intermediate layer disposed below the organic light-emitting electrode, wherein the intermediate layer comprises an organic light-emitting layer; and

forming a merged layer by mixing a sensing electrode and the organic light-emitting electrode, wherein a material of the sensing electrode is different from a material of the organic light-emitting electrode.

10. The method for manufacturing the touch sensitive display according to claim 9, wherein the material of the sensing electrode is metal oxide, and the material of the organic light-emitting electrode is metal.

11. The method for manufacturing the touch sensitive display according to claim 9, further comprising:

forming a first touch sensing layer on a surface of an upper substrate, wherein the first touch sensing layer comprises a plurality of first sensing electrodes;

forming the organic light-emitting assembly on an upper surface of a lower substrate;

forming the merged layer on the surface of the organic light-emitting assembly, wherein the sensing electrode comprised in the merged layer comprises a plurality of second sensing electrodes, while the organic light-emitting electrode is a counter electrode of the organic light-emitting assembly, wherein the touch sensing assembly comprises the first sensing layer and the second sensing layer; and

forming the upper substrate and the lower substrate as an assembly.

12. The method for manufacturing the touch sensitive display according to claim 11, further comprising:

forming the first touch sensing layer on an upper surface of the upper substrate, and the merged layer being formed below the lower surface of the upper substrate as the top layer of the upper surface of the lower substrate.

13. The method for manufacturing the touch sensitive display according to claim 11, further comprising:

forming the first touch sensing layer on the lower surface of the upper substrate, and the merged layer being formed below the first touch sensing layer as the top layer of the upper surface of the lower substrate.

14. The method for manufacturing the touch sensitive display according to claim 11, further comprising:

forming a sealing layer in the peripheral area between the upper substrate and the lower substrate to make the upper substrate and the lower substrate be oppositely formed as an assembly.

15. The method for manufacturing the touch sensitive display according to claim 11, wherein the organic light-emitting assembly further comprises a thin-film transistor assembly and a pixel electrode layer, which are integrally formed on the upper surface of the lower substrate.

16. The method for manufacturing the touch sensitive display according to claim 15, wherein the intermediate layer further comprises an electron injecting layer, an electron transfer layer, a hole transfer layer, and a hole injecting layer.

17. A touch sensitive display, comprising:

a first touch sensing layer having a plurality of first sensing electrodes;

a second touch sensing layer having a plurality of second sensing electrodes, the second touch sensing layer being formed below the first touch sensing layer; and

an organic light-emitting assembly below the first touch sensing layer, the organic light-emitting assembly comprising an counter electrode, a pixel electrode layer and an intermediate layer therebetween, the intermediate layer comprising an organic light-emitting layer and being disposed below the counter electrode, the pixel electrode layer being disposed below the organic light-emitting electrode;

wherein the second sensing electrode and the counter electrode are integrated into a merged layer, and a material of the second sensing electrode is different from a material of the counter electrode.

18. The touch sensitive display according to claim 17, wherein the first touch sensing layer is formed on a surface of an upper substrate, the organic light-emitting assembly disposed on a lower substrate;

wherein the merged layer is formed on the surface of the organic light-emitting assembly.

19. The touch sensitive display according to claim 17, wherein the first touch sensing layer is formed on an upper surface of an upper substrate, and the merged layer is formed below an lower surface of the upper substrate as the top layer of the upper surface of the lower substrate.

20. The touch sensitive display according to claim 17, wherein the first touch sensing layer is formed on the lower surface of the upper substrate, and the merged layer is formed below the first touch sensing layer as the top layer of the upper surface of the lower substrate.