TOUCH ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

• US 20150162389A1
• Filed: 12/17/2013
• Published: 06/11/2015
• Est. Priority Date: 09/27/2013
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Zhang, Wenlin, Cao, Zhanfeng, Sun, Shuang
• Granted Patent: US 9,640,593 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0445 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
• CPC Class Codes: G06F 3/04886 by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
• CPC Class Codes: H10K 50/81 Anodes
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/123 Connection of the pixel electrodes to the thin film transistors [TFT]
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/126 Shielding, e.g. light-blocking means over the TFTs
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass

Abstract

A touch organic light emitting diode (OLED) display device, including: a thin film transistor formed on one side of a substrate, a touch signal feedback layer formed on the thin film transistor, a luminous substrate provided on the touch signal feedback layer, and a touch signal receiving layer formed on the other side of the substrate. An anode layer of the luminous substrate is connected to a drain electrode of the thin film transistor. As to the touch-sensitive OLED display device, a touch screen and an OLED display portion are prepared integratedly, so that the weight and thickness of the display itself are greatly reduced, and the production cost is saved. A manufacturing method of the touch-sensitive OLED display device is further disclosed.

Claims

1. A touch organic light emitting diode display device, comprising:

a thin film transistor formed on one side of a substrate,

a touch signal feedback layer formed on the thin film transistor,

a luminous substrate provided on the touch signal feedback layer, an anode layer of which is connected to a drain electrode of the thin film transistor, and

a touch signal receiving layer formed on the other side of the substrate.

2. The touch organic light emitting diode display device claimed as claim 1, further comprising:

a protection layer formed on the thin film transistor, with the touch signal feedback layer being formed thereon; and

an interlayer insulation layer formed on the touch signal feedback layer,

wherein a first via hole is provided in the interlayer insulation layer, a second via hole is provided in the protection layer, the anode layer is formed on the interlayer insulation layer, and is connected to the drain electrode of the thin film transistor through the first via hole and the second via hole.

3. The touch organic light emitting diode display device claimed as claim 1, wherein the luminous substrate includes an anode layer, and a luminous layer and a cathode layer that are formed on the anode layer in sequence.

4. The touch organic light emitting diode display device claimed as claim 3, wherein a thickness of the anode layer is in the range of 400 Å

to 700 Å

.

5. The touch organic light emitting diode display device claimed as claim 1, wherein each of the touch signal receiving layer and the touch signal feedback layer is made of at least one material selected from the group consisting of indium gallium zinc oxide, indium zinc oxide, indium tin oxide, and indium gallium tin oxide.

6. The touch organic light emitting diode display device claimed as claim 5, wherein a thickness of the touch signal receiving layer is in the range of 400 Å

to 700 Å

.

7. The touch organic light emitting diode display device claimed as claim 5, wherein a thickness of the touch signal feedback layer is in the range of 400 Å

to 700 Å

.

8. The touch organic light emitting diode display device claimed as claim 2, wherein a material for the protection layer is SiOx or SiNx.

12. The touch organic light emitting diode display device claimed as claim 2, wherein the luminous substrate includes an anode layer, and a luminous layer and a cathode layer that are formed on the anode layer in sequence.

13. The touch organic light emitting diode display device claimed as claim 12, wherein a thickness of the anode layer is in the range of 400 Å

to 700 Å

.

14. The touch organic light emitting diode display device claimed as claim 2, wherein each of the touch signal receiving layer and the touch signal feedback layer is made of at least one material selected from the group consisting of indium gallium zinc oxide, indium zinc oxide, indium tin oxide, and indium gallium tin oxide.

15. The touch organic light emitting diode display device claimed as claim 14, wherein a thickness of the touch signal receiving layer is in the range of 400 Å

to 700 Å

.

16. The touch organic light emitting diode display device claimed as claim 14, wherein a thickness of the touch signal feedback layer is in the range of 400 Å

to 700 Å

.

9. A manufacturing method of a touch organic light emitting diode display device, comprising:

forming a pattern of a touch signal receiving layer on one side of a substrate;

forming a pattern of a thin film transistor comprising a drain electrode on the other side of the substrate;

forming a pattern of a touch signal feedback layer on the thin film transistor; and

forming a pattern of a luminous substrate comprising an anode layer on the touch signal feedback layer, the anode layer being connected to the drain electrode.

10. The manufacturing method of the touch organic light emitting diode display device claimed as claim 9, wherein,

a pattern of a protection layer with a second via hole is formed on a source electrode and the drain electrode of the thin film transistor;

a pattern of the touch signal feedback layer is formed on the protection layer;

an interlayer insulation layer with a first via hole therein is formed on the touch signal feedback layer;

a pattern of the anode layer is formed on the interlayer insulation layer, and the anode layer is connected to the drain electrode through the first via hole and the second via hole.

11. The manufacturing method of the touch organic light emitting diode display device claimed as claim 10, wherein a pattern of a luminous layer and a pattern of a cathode layer are formed on the anode layer through patterning processes sequentially.