TOUCH DISPLAY PANEL

• US 20150022730A1
• Filed: 12/19/2013
• Published: 01/22/2015
• Est. Priority Date: 07/18/2013
• Status: Abandoned Application

• Current Assignee: Ye Xin Technology Consulting Co Ltd
• Original Assignee: Ye Xin Technology Consulting Co Ltd
• Inventors: CHANG, WEI-CHIH, GOTOH, JUN, JIANG, KUAN-HSIEN
• Application Number:
  US14/135,464
• Publication Number:
  US 20150022730A1
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters

Abstract

A touch display panel includes an LCD panel and a touch structure formed on the LCD panel. The LCD panel includes a first substrate, a second substrate and a liquid crystal layer formed between the first substrate and the second substrate. A color filter is formed on a bottom surface of the first substrate adjacent to the liquid crystal layer. A touch structure is formed on the LCD panel. The touch structure includes a first transparent ITO film. The first transparent ITO film defines a plurality of channels thereon. A photo etching barrier layer is formed between the first transparent ITO film and the color filter. The photo etching barrier layer is configured to prevent the channels from extending to the color filter and the liquid crystal layer.

Claims

1. A touch display panel, comprising:

an LCD panel, comprising a first substrate, a second substrate and a liquid crystal layer formed between the first substrate and the second substrate, a color filter being formed on a bottom surface of the first substrate adjacent to the liquid crystal layer;

a touch structure formed on the LCD panel, the touch structure comprising a first transparent ITO film, the first transparent ITO film defines a plurality of channels thereon;

a photo etching barrier layer formed between the first transparent ITO film and the color filter, the photo etching barrier layer being configured to prevent the channels from extending to the color filter and the liquid crystal layer.

2. The touch display panel of claim 1, wherein the photo etching barrier layer is made of organics to absorb ultraviolet light.

3. The touch display panel of claim 2, wherein the photo etching barrier layer is made of a material selected from polyimide and propyl acetate.

4. The touch display panel of claim 1, wherein the photo etching barrier layer is an adhesive layer filled with metallic particles.

5. The touch display panel of claim 4, wherein the metallic particles is made of a material selected from Al, Cu, Ag, Pd, Ni and alloys thereof

6. The touch display panel of claim 1, wherein the photo etching barrier layer comprises a plurality of reflective films stacked together.

7. The touch display panel of claim 6, wherein the reflective films are made of a material selected from TiO₂, ZnO and SnO₂.

8. The touch display panel of claim 1, wherein the photo etching barrier layer is formed on an upper surface of the first substrate adjacent to the touch structure, a first polarizer is formed on a bottom surface of the second substrate, a second polarizer is formed on an upper surface of the first transparent ITO film.

9. The touch display panel of claim 8, further comprising a second transparent ITO film, the second transparent ITO film is formed between the liquid crystal layer and the second substrate.

10. The touch display panel of claim 8, wherein the photo etching barrier layer is made of organics to absorb ultraviolet light.

11. The touch display panel of claim 10, wherein the photo etching barrier layer is made of a material selected from polyimide and propyl acetate.

12. The touch display panel of claim 8, wherein the photo etching barrier layer is an adhesive layer filled with metallic particles.

13. The touch display panel of claim 12, wherein the metallic particles is made of a material selected from Al, Cu, Ag, Pd, Ni and alloys thereof

14. The touch display panel of claim 8, wherein the photo etching barrier layer comprises a plurality of reflective films stacked together.

15. The touch display panel of claim 14, wherein the reflective films are made of a material selected from TiO₂, ZnO and SnO₂.

16. The touch display panel of claim 1, wherein the photo etching barrier layer is formed between the first substrate and the color filter, a first polarizer is formed on a bottom surface of the second substrate, and a second polarizer is formed on an upper surface of the first ITO film.

17. The touch display panel of claim 16, wherein the photo etching barrier layer is made of organics to absorb ultraviolet light.

18. The touch display panel of claim 17, wherein the photo etching barrier layer is made of a material selected from polyimide and propyl acetate.

19. The touch display panel of claim 16, wherein the photo etching barrier layer comprises a plurality of reflective films stacked together.

20. The touch display panel of claim 19, wherein the reflective films are made of a material selected from TiO₂, ZnO and SnO₂.