Transparent conductive oxide pattern blanking structure, touch panel and display device

Patent metadata

Field	Value
Publication number	US-2016364033-A1
Application number	US-201514913282-A
Country	US
Kind code	A1
Filing date	Aug 20, 2015
Priority date	Feb 17, 2015
Publication date	Dec 15, 2016
Grant date	—

Abstract

The present invention discloses a transparent conductive oxide pattern blanking structure, a touch panel, and a display device. A patterned transparent conductive oxide layer is stacked on a base plate, and a pattern blanking layer is adapted to make a pattern of the transparent conductive oxide layer invisible in the visible light. Thus, the pattern blanking layer as a whole layer can be formed during fabricating the pattern of the transparent conductive oxide layer, and there is no need for an attaching or patterning process. Thus, an effect of making the pattern of the transparent conductive oxide layer become invisible in the visible light from clearly visible can be achieved at a low fabricating cost.

First claim

1 . A transparent conductive oxide pattern blanking structure, comprising a base plate, a patterned transparent conductive oxide layer which is stacked on the base plate, and a pattern blanking layer which is adapted to make a pattern of the transparent conductive oxide layer invisible in the visible light.

2 . The transparent conductive oxide pattern blanking structure of claim 1 , wherein the pattern blanking layer comprises at least one dielectric layer group which is arranged between the base plate and the transparent conductive oxide layer, wherein each of the dielectric layer group comprises at least two dielectric layers which are stacked and have refractive indices decreasing successively in a direction from the base plate to the transparent conductive oxide layer.

3 . The transparent conductive oxide pattern blanking structure of claim 2 , wherein each of the dielectric layer group comprises a first dielectric layer and a second dielectric layer on the first dielectric layer, wherein the second dielectric layer has a refractive index smaller than that of the first dielectric layer.

4 . The transparent conductive oxide pattern blanking structure of claim 3 , wherein the first dielectric layer has a refractive index of 1.9-2.2, and the second dielectric layer has a refractive index of 1.4-1.6.

5 . The transparent conductive oxide pattern blanking structure of claim 4 , wherein the first dielectric layer is made from Nb 2 O 5 , and the second dielectric layer is made from SiO 2 .

6 . The transparent conductive oxide pattern blanking structure of claim 2 , wherein the pattern blanking layer further comprises a third dielectric layer which is arranged on a side of the transparent conductive oxide layer away from the dielectric layer group, wherein the third dielectric layer has a refractive index smaller than that of the transparent conductive oxide layer.

7 . The transparent conductive oxide pattern blanking structure of claim 6 , wherein the transparent conductive oxide layer has a refractive index of 1.9, and the third dielectric layer has a refractive index of 1.4-1.9.

8 . The transparent conductive oxide pattern blanking structure of claim 7 , wherein the third dielectric layer is made from one of SiO 2 , SiNx, SiNxOy, organic material, or a combination thereof.

9 . The transparent conductive oxide pattern blanking structure of claim 6 , wherein the pattern blanking layer further comprises optically clear resin which is arranged on a side of the third dielectric layer away from the transparent conductive oxide layer.

10 . The transparent conductive oxide pattern blanking structure of claim 1 , wherein the pattern blanking layer comprises a fourth dielectric layer and optically clear resin which are arranged on the transparent conductive oxide layer successively, wherein the fourth dielectric layer has a refractive index smaller than that of the transparent conductive oxide layer.

11 . The transparent conductive oxide pattern blanking structure of claim 10 , wherein the transparent conductive oxide layer has a refractive index of 1.9, and the fourth dielectric layer has a refractive index of 1.5-1.9.

12 . The transparent conductive oxide pattern blanking structure of claim 11 , wherein the fourth dielectric layer is made from SiOxNy.

13 . The transparent conductive oxide pattern blanking structure of claim 1 , wherein the transparent conductive oxide layer is made from ITO.

14 . The transparent conductive oxide pattern blanking structure of claim 6 , wherein the first dielectric layer is made from Nb 2 O 5 with a thickness of 80˜130 Å, the second dielectric layer is made from SiO 2 with a thickness of 400˜500 Å, the transparent conductive oxide layer is made from ITO with a thickness of 400˜500 Å, and the third dielectric layer is made from SiO 2 with a thickness of 400˜500 Å.

15 . A touch panel, comprising a transparent conductive oxide pattern blanking structure which comprises a base plate, a patterned transparent conductive oxide layer which is stacked on the base plate, and a pattern blanking layer which is adapted to make a pattern of the transparent conductive oxide layer invisible in the visible light.

16 . The touch panel of claim 15 , wherein the pattern blanking layer comprises at least one dielectric layer group which is arranged between the base plate and the transparent conductive oxide layer, wherein each of the dielectric layer group comprises at least two dielectric layers which are stacked and have refractive indices decreasing successively in a direction from the base plate to the transparent conductive oxide layer.

17 . The touch panel of claim 16 , wherein each of the dielectric layer group comprises a first dielectric layer and a second dielectric layer on the first dielectric layer, wherein the second dielectric layer has a refractive index smaller than that of the first dielectric layer.

18 . The touch panel of claim 16 , wherein the pattern blanking layer further comprises a third dielectric layer which is arranged on a side of the transparent conductive oxide layer away from the dielectric layer group, wherein the third dielectric layer has a refractive index smaller than that of the transparent conductive oxide layer.

19 . The touch panel of claim 18 , wherein the pattern blanking layer further comprises optically clear resin which is arranged on a side of the third dielectric layer away from the transparent conductive oxide layer.

20 . A display device, comprising the transparent conductive oxide pattern blanking structure of claim 1 .

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Yang Wenjuan

Classifications

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title