TOUCH DEVICE AND FABRICATION METHOD THEREOF

• US 20140054145A1
• Filed: 08/19/2013
• Published: 02/27/2014
• Est. Priority Date: 08/21/2012
• 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: Chi, Ho-Hsun, Chiu, Tsung-Ke, Ye, Huilin, Yu, Jing
• Granted Patent: US 9,633,801 B2
• Time in Patent Office: Days
• US Class Current: 200/304
• 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: H01H 11/00 Apparatus or processes specially adapted for the manufacture of electric switches processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88
• CPC Class Codes: H01H 9/18 Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
• CPC Class Codes: Y10T 29/49105 Switch making

Abstract

A touch device including a touch panel is provided. The touch panel includes a substrate having a touching surface and a bonding surface opposite to the touching surface, and further having a viewable area and a non-viewable area surrounding the viewable area. A colorful decoration layer is disposed on the bonding surface of the substrate and at the non-viewable area. The colorful decoration layer has a gradient side adjacent to the viewable area. A planarization layer completely covers the gradient side of the colorful decoration layer and the bonding surface of the substrate. A touch sensing layer is disposed on the planarization layer and extended from the viewable area to the non-viewable area. Further, a method for fabricating a touch device is provided.

Claims

1. A touch device, comprising a touch panel, wherein the touch panel comprises:

a substrate, having a touching surface and a bonding surface opposite to the touching surface, and further having a viewable area and a non-viewable area surrounding the viewable area;

a colorful decoration layer disposed on the bonding surface of the substrate and at the non-viewable area, wherein the colorful decoration layer has a gradient side adjacent to the viewable area;

a planarization layer completely covering the gradient side of the colorful decoration layer and the bonding surface of the substrate; and

a touch sensing layer disposed on the planarization layer and extended from the viewable area to the non-viewable area.

2. The touch device of claim 1, wherein the colors of the colorful decoration layer is selected from a group consisting of white and other colors.

3. The touch device of claim 1, wherein the colorful decoration layer comprises a structure consisting of one layer or a plurality of layers.

4. The touch device of claim 3, wherein the colorful decoration layer is a structure consisting of a plurality of layers, and wherein each layer has a color different from that of other layers.

5. The touch device of claim 3, wherein the colorful decoration layer is a structure consisting of a plurality of layers, and wherein each layer has a color the same as that of other layers.

6. The touch device of claim 1, wherein the colorful decoration layer has a thickness of 10 μ

m to 30 μ

m.

7. The touch device of claim 1, further comprising a touch signal conveying trace disposed on the planarization layer and at the non-viewable area, wherein the touch signal conveying trace is electrically connected to the touch sensing layer.

8. The touch device of claim 7, further comprising a black decoration layer disposed on the planarization layer and at the non-viewable area, wherein the touch signal conveying trace is disposed on the black decoration layer.

9. The touch device of claim 8, wherein the black decoration layer has a thickness of 2 μ

m to 4 μ

m.

10. The touch device of claim 7, further comprising:

a protection layer, disposed on the touch sensing layer and the touch signal conveying trace, completely covering the viewable area and the non-viewable area;

a display panel; and

an adhesive layer disposed between the display panel and the protection layer.

11. The touch device of claim 10, wherein the display panel comprises:

a first substrate;

a second substrate disposed under the first substrate; and

a display element layer sandwiched between the first substrate and the second substrate.

12. A method for fabricating a touch device, comprising:

providing a substrate, having a touching surface and a bonding surface opposite to the touching surface, and further having a viewable area and a non-viewable area surrounding the viewable area;

forming a colorful decoration layer on the bonding surface of the substrate and at the non-viewable area, wherein the colorful decoration layer has a gradient side adjacent to the viewable area;

forming a planarization layer to completely cover the gradient side of the colorful decoration layer and the bonding surface of the substrate; and

forming a touch sensing layer on the planarization layer and the touch sensing layer extended from the viewable area to the non-viewable area.

13. The method of claim 12, wherein the step of forming the colorful decoration layer comprises

an ink printing process and the colorful decoration layer comprises a structure consisting of one layer or a plurality of layers.

14. The method of claim 12, further comprising forming a touch signal conveying trace on the planarization layer and at the non-viewable area, wherein the touch signal conveying trace is electrically connected to the touch sensing layer.

15. The method of claim 14, further comprising forming a black decoration layer on the planarization layer and at the non-viewable area, wherein the touch signal conveying trace is formed on the black decoration layer.

16. The method of claim 14, further comprising forming a protection layer on the touch sensing layer and the touch signal conveying trace to completely cover the viewable area and the non-viewable area.

17. The method of claim 16, further comprising;

providing a display panel;

forming an adhesive layer on the display panel; and

bonding the display panel with the protection layer, wherein the adhesive layer is between the display panel and the protection layer.