Touch panel and fabrication method thereof

Patent metadata

Field	Value
Publication number	US-9304634-B2
Application number	US-201213723145-A
Country	US
Kind code	B2
Filing date	Dec 20, 2012
Priority date	Dec 20, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

The present disclosure relates to a touch panel, and more particularly, to a kind of touch panel which actualizes various touch response functions on a same surface and a fabrication method thereof. The touch panel includes an upper cover substrate, a first electrode array, a patterned mask layer, and at least a second electrode array. The upper cover substrate includes a display area and a peripheral area surrounding the display area. The first electrode array is disposed corresponding to the display area. The patterned mask layer is disposed corresponding to the peripheral area. At least a second electrode array is disposed corresponding to a first patterned area of the patterned mask layer. A fabricating method for the touch panel is also provided.

First claim

What is claimed is:

1. A touch panel comprising:
an upper cover substrate comprising a display region and a peripheral region, wherein the peripheral region surrounds the display region;
a first electrode array disposed corresponding to the display region;
a patterned mask layer disposed corresponding to the peripheral region;
at least one second electrode array disposed corresponding to a first patterned region of the patterned mask layer; and
a colorful film disposed corresponding to the patterned mask layer.

2. The touch panel of claim 1 , wherein the first electrode array and the patterned mask layer are disposed on the upper cover substrate, and further wherein the second electrode array is disposed on the patterned mask layer.

3. The touch panel of claim 1 , wherein the second electrode array is electrically connected to the first electrode array, wherein the second electrode array is an extending part of the first electrode array.

4. The touch panel of claim 1 , wherein the patterned mask layer further comprises a second patterned region.

5. The touch panel of claim 4 , wherein the first patterned region and the second patterned region respectively comprise a piercing pattern.

6. The touch panel of claim 1 , wherein the first electrode array and the second electrode array are formed within a same inductive electrode layer.

7. The touch panel of claim 6 , further comprising a passivation layer disposed between the inductive electrode layer and the colorful film.

8. The touch panel of claim 6 , wherein the first electrode array and the second electrode array respectively comprise a plurality of first inducing lines aligned in parallel with a first axis and a plurality of second inducing lines aligned in parallel with a second axis, and wherein the first inducing lines and the second inducing lines are mutually insulated.

9. The touch panel of claim 8 , wherein each of the first inducing lines comprises:
a plurality of first conductive units belonged to a conductive layer of the inductive electrode layer and disposed mutually at intervals along the first axis; and
a plurality of first conductive wires belonged to the conductive layer in electrical connection between two adjacent first conductive units along the first axis, wherein areas between the adjacent first inducing lines and surrounded by the adjacent first conductive units form a configuration region.

10. The touch panel of claim 9 , wherein each of the second inducing lines comprises:
a plurality of second conductive units belonged to the conductive layer and disposed within the configuration region respectively; and
a plurality of second conductive wires belonged to a wiring layer of the inductive electrode layer and in electrical connection between two adjacent second conductive units along the second axis by correspondingly crossing the first conductive wires.

11. The touch panel of claim 10 , wherein the inductive electrode layer further comprises a plurality of insulating blocks correspondingly disposed between the first conductive wires and the second conductive wires to make the first inducing lines and the second inducing lines electrically insulated.

12. The touch panel of claim 6 , further comprising a lead-wire structure belonged to a wiring layer of the inductive electrode layer and disposed correspondingly to the peripheral region in electrical connection to the first electrode array and the second electrode array.

13. A manufacturing method of a touch panel comprising the steps of;
forming a patterned mask layer for being disposed corresponding to a peripheral region of an upper cover substrate, wherein the peripheral region surrounds a display region of the upper cover substrate;
forming a first electrode array and a second electrode array, wherein the first electrode array is disposed corresponding to the display region, and wherein the second electrode array is disposed corresponding to a first patterned region of the patterned mask layer; and
forming a colorful film corresponding to the patterned mask layer.

14. The manufacturing method for the touch panel of claim 13 , wherein the patterned mask layer and the first electrode array are disposed on the upper cover substrate, and wherein the second electrode array is disposed on the patterned mask layer.

15. The manufacturing method for the touch panel of claim 13 , wherein the patterned mask layer further comprises a second patterned region.

16. The manufacturing method for the touch panel of claim 13 , wherein the first electrode array and the second electrode array are formed within a same inductive electrode layer.

17. The manufacturing method for the touch panel of claim 16 , further comprising:
forming a passivation layer between the inductive electrode layer and the colorful film.

18. The manufacturing method for the touch panel of claim 16 , wherein the step of forming the first electrode array and the second electrode array further comprises:
coating a conductive layer;
patterning the conductive layer to form a plurality of first inducing lines aligned in parallel with a first axis and a plurality of second conductive units, wherein each of the first inducing lines comprises a plurality of first conductive units and a plurality of first conductive wires, and wherein the first conductive units are disposed mutually at intervals along the first axis, while two adjacent first conductive units are electrically connected through the first conductive wires, and wherein areas between the adjacent first inducing lines and surrounded by the adjacent first conductive units form a configuration area, and further wherein the second conductive units are disposed on the configuration area;
coating and patterning an insulating layer to form a plurality of insulating blocks corresponding to each of the first conductive wires; and
coating and patterning a wiring layer to form a plurality of second conductive wires disposed correspondingly to each of the insulating blocks, wherein the second conductive wires are respectively in electrical connection between two adjacent second conductive units along a second axis to form a plurality of second inducing lines aligned in parallel with the second axis.

19. The manufacturing method for the touch panel of claim 18 , wherein the step of coating and patterning the wiring layer further comprises forming a lead-wire structure disposed correspondingly to the peripheral region in electrical connection to the first electrode array and the second electrode array.

20. The manufacturing method for the touch panel of claim 13 , wherein the colorful film is formed with colorful laminated films, is produced by printing colorful inks, colorful photoresistances or light-guiding inks, or is produced by spraying colorful inks, colorful photoresistances or light-guiding inks.

Assignees

• Jiang Yau-Chen
• Wu Jia
• Cai Zhixiong
• Huang Pingping
• Tpk Touch Solutions Xiamen Inc

Inventors

• Jiang Yau-Chen
• Wu Jia
• Cai Zhixiong
• Huang Pingping

Classifications

• G06F2203/04103

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

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title