Touch panel and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2016132142-A1
Application number	US-201614997592-A
Country	US
Kind code	A1
Filing date	Jan 18, 2016
Priority date	Feb 27, 2013
Publication date	May 12, 2016
Grant date	—

Abstract

The present invention provides a method for forming a touch panel, at least comprising the following steps. Step S 1: a patterned first electrode layer is formed on a cover lens. A display region and a non-display region are defined on the cover lens, and the patterned first electrode layer is formed within the display region; step S 2: a shielding layer is formed on the cover lens and disposed within the non-display region; step S 3: an insulating layer is then formed on the shielding layer and on the patterned first electrode layer, a plurality of via holes are formed on the insulating layer, thereby exposing parts of the patterned first electrode layer; and step S 4: a patterned second electrode layer is formed on the insulating layer within the non-display region, and the patterned second electrode layer is electrically connected to the patterned first electrode layer through the via holes.

First claim

What is claimed is:

1 . A touch panel, comprising:
a cover lens, defining a display region and a non-display region, surrounding the display region, on the cover lens; a patterned first electrode layer, disposed on the cover lens and within the display region; a shielding layer disposed on the cover lens and within the non-display region; an insulating layer disposed on the shielding layer and on the patterned first electrode layer, with a plurality of via holes disposed in the insulating layer exposing parts of the patterned first electrode layer; and a patterned second electrode layer disposed on the insulating layer within the non-display region, wherein the patterned second electrode layer is electrically connected to the patterned first electrode layer through the via holes.

2 . The touch panel of claim 1 , further comprising:
a plurality of signal traces disposed on the shielding layer, and disposed between the shielding layer and the insulating layer; and a plurality of first jumpers disposed on the insulating layer, wherein the first jumpers are electrically connected to the signal traces and the patterned first electrode layer through the via holes.

3 . The touch panel of claim 2 , wherein the patterned first electrode layer comprises:
a plurality of first blocks arranged along a first direction; a plurality of connection traces electrically connected to two adjacent first blocks; and a plurality of second blocks arranged along a second direction, disposed on two sides of the connection traces, and electrically connected to the first jumpers through the via holes.

4 . The touch panel of claims 2 , wherein the first jumpers and the patterned second electrode layer are made of transparent materials.

5 . The touch panel of claim 2 , wherein the touch panel further comprises:
a plurality of second jumpers disposed on the shielding layer and between the shielding layer and the insulating layer; with the patterned second electrode layer comprising: a plurality of first blocks arranged along a first direction; a plurality of connection traces electrically connected to two adjacent first blocks; a plurality of second blocks arranged along a second direction, disposed on two sides of the connection traces, and electrically connected to the second jumpers the via holes.

6 . The touch panel of claim 5 , wherein the second jumpers and the signal traces are made of metals, transparent materials or compositions thereof.

Assignees

• Tpk Touch Solutions Xiamen Inc

Inventors

• Chiu Tsung-Ke
• Su Shunqing
• Zhang Zhuanyuan
• Lin Yan

Classifications

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · 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

• G06F1/1643

  the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615) · CPC title

• G06F3/041 Primary

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

• G06F1/1626 Primary

  with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs] · CPC title