Touch panel and method for manufacturing the same, display apparatus

Patent metadata

Field	Value
Publication number	US-10599241-B2
Application number	US-201715745041-A
Country	US
Kind code	B2
Filing date	Jul 18, 2017
Priority date	Oct 31, 2016
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

The present disclosure provides a touch panel and a method for manufacturing the same, and a display apparatus. The display panel includes a substrate, a touch electrode provided in a touch region of the substrate, and a plurality of signal transmission lines provided in a non-touch wiring region of the substrate, the non-touch wiring region of the substrate is located in a bezel of the touch panel, the signal transmission lines are coupled to the touch electrode for transmitting a touch signal, the signal transmission lines in the non-touch wiring region are arranged in at least two layers overlapping with each other, and the signal transmission lines of adjacent layers are insulated from each other.

First claim

The invention claimed is:

1. A touch panel, comprising a substrate, a touch electrode provided in a touch region of the substrate, and a plurality of signal transmission lines provided in a non-touch wiring region of the substrate, the non-touch wiring region of the substrate is located in a bezel of the touch panel, the signal transmission lines are coupled to the touch electrode for transmitting a touch signal, the signal transmission lines in the non-touch wiring region are arranged in at least two layers overlapping with each other, and the signal transmission lines of adjacent layers are insulated from each other,
wherein the touch panel further comprises a non-touch connection region, the signal transmission lines of the first layer and the signal transmission lines of the second layer further extend to the non-touch connection region to connect to a peripheral circuit board in the non-touch connection region, the signal transmission lines of the first layer and the signal transmission lines of the second layer are provided in a same layer in the non-touch connection region,
wherein the touch electrode comprises a plurality of first electrode strips and a plurality of second electrode strips, the first electrode strips intersect with and are insulated from the second electrode strips, each of the first electrode strips comprises a plurality of first electrode tabs and a plurality of first connection bars, and is formed by connecting the first electrode tabs via the first connection bars, each of the second electrode strips comprises a plurality of second electrode tabs and a plurality of second connection bars, and is formed by connecting the second electrode tabs via the second connection bars, the first electrode strips and the second electrode tabs are provided in a same layer, the second connection bars are provided at a side of the first connection bars distal to the substrate and intersect with the first connection bars, a second insulation layer is interposed between the first connection bars and the second connection bars, and the second connection bars and the signal transmission lines of the second layer are formed of a same material in a same layer.

2. The touch panel of claim 1 , wherein the signal transmission lines are coupled to the first electrode strips and the second electrode strips one to one, a portion of the signal transmission lines are arranged in a first layer in the non-touch wiring region, another portion of the signal transmission lines are arranged in a second layer in the non-touch wiring region, and a first insulation layer is interposed between the signal transmission lines of the first layer and the signal transmission lines of the second layer.

3. The touch panel of claim 1 , wherein each of the first electrode strips is coupled to two of the signal transmission lines, each of the second electrode strips is coupled to two of the signal transmission lines, the two of the signal transmission lines coupled to each of the first electrode strips are respectively coupled to two ends of each of the first electrode strips, the two of the signal transmission lines coupled to each of the second electrode strips are respectively coupled to two ends of each of the second electrode strips, a portion of the signal transmission lines are arranged in a first layer in the non-touch wiring region, another portion of the signal transmission lines are arranged in a second layer in the non-touch wiring region, and a first insulation layer is interposed between the signal transmission lines of the first layer and the signal transmission lines of the second layer.

4. The touch panel of claim 2 , wherein half of the signal transmission lines coupled to the first electrode strips and the second electrode strips are arranged in the first layer, and another half of the signal transmission lines coupled to the first electrode strips and the second electrode strips are arranged in the second layer, and orthographic projections of the signal transmission lines of the first layer on the substrate completely overlap with orthographic projections of the signal transmission lines of the second layer on the substrate.

5. The touch panel of claim 2 , further comprising a black matrix provided in the non-touch wiring region, the signal transmission lines of the second layer are arranged at a side of the signal transmission lines of the first layer distal to the substrate, and the black matrix is arranged at a side of the signal transmission lines of the first layer proximal to the substrate.

6. The touch panel of claim 5 , wherein the black matrix further extends to the non-touch connection region, and an orthographic projection of the black matrix on the substrate covers the non-touch connection region.

7. The touch panel of claim 1 , further comprising an insulation protection layer provided at a side of the touch electrode and the signal transmission lines distal to the substrate, and an orthographic projection of the insulation protection layer on the substrate covers the touch region and the non-touch wiring region.

8. A display apparatus, comprising the touch panel of claim 1 .

9. A method for manufacturing the touch panel of claim 1 , comprising steps of:
forming a pattern of the touch electrode in the touch region of the substrate by a patterning process, the touch electrode comprises a plurality of first electrode strips and a plurality of second electrode strips, each of the first electrode strips comprises a plurality of first electrode tabs and a plurality of first connection bars, each of the second electrode strips comprises a plurality of second electrode tabs and a plurality of second connection bars;
forming a pattern of at least two layers of signal transmission lines that are overlapped with each other in the non-touch wiring region of the substrate by a patterning process, wherein the signal transmission lines of adjacent layers are insulated from each other, and the signal transmission lines are coupled to the touch electrode for transmitting a touch signal,
wherein the step of forming the pattern of at least two layers of signal transmission lines that are overlapped with each other in the non-touch wiring region of the substrate by the patterning process comprises sub-steps:
S 10 , forming a pattern of the signal transmission lines of the first layer in the non-touch wiring region and a pattern of the signal transmission lines of the first layer in the non-touch connection region simultaneously by a single patterning process;
S 11 , after completing the sub-step S 10 , forming a pattern of a first insulation layer in the non-touch wiring region by a single processing process and forming a pattern of a first insulation layer on the signal transmission lines of the first layer in the non-touch connection region, rather than on other parts except for the signal transmission lines of the first layer in the non-touch connection region;
S 12 , after completing the sub-step S 11 , forming a pattern of the signal transmission lines of the second layer in the non-touch wiring region and a pattern of the signal transmission lines of the second layer on other parts except for the signal transmission lines of the first layer in the non-touch connection region simultaneously by a single patterning process,
wherein the step of forming the pattern of the touch electrode in the touch region of the substrate by the patterning process comprises sub-steps:
S 20 , forming a pattern of the first electrode strips and the second electrode tabs in the touch region by a single patterning process;
S 21 , after completing the sub-step S 20 , forming a pattern of the second insulation layer in the touch region by a single patterning process;
S 22 ,

Assignees

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

Inventors

• Li Ning
• Jiang Jianming
• Gu Wei
• Wang Tengli
• Sun Daqing
• Ruan Ganlin

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

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title