Touch display panel and touch display apparatus

Patent metadata

Field	Value
Publication number	US-2016109977-A1
Application number	US-201414517512-A
Country	US
Kind code	A1
Filing date	Oct 17, 2014
Priority date	Oct 17, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

A touch display panel includes a substrate, a light-blocking matrix layer and a sensing circuit. The sensing circuit is disposed on a surface of the substrate and forms a single-layer structure and located at the light-blocking matrix layer. The sensing circuit includes a plurality of driving electrodes, a plurality of sensing electrodes and a plurality of signal wires. The driving electrodes and the sensing electrodes are insulated from each other. The signal wires are connected to the driving electrodes and the sensing electrodes. The sensing electrodes, the driving electrodes and the signal wires are disposed on the single-layer structure. A touch display apparatus is also disclosed.

First claim

What is claimed is:

1 . A touch display panel, comprising:
a substrate; a light-blocking matrix layer, and a sensing circuit forming a single-layer structure on a surface of the substrate and located at the light-blocking matrix layer.

2 . The touch display panel as recited in claim 1 , wherein the sensing circuit includes:
a plurality of driving electrodes separated from each other; a plurality of sensing electrodes separated from each other; and a plurality of signal wires connected to the driving electrodes and the sensing electrodes, and the sensing electrodes, the driving electrodes and the signal wires are disposed on the single-layer structure.

3 . The touch display panel as recited in claim 2 , wherein the signal wires connected to the driving electrodes are used to receive a driving signal to sense a touch, and the sensed signal is outputted through the signal wires connected to the sensing electrodes.

4 . The touch display panel as recited in claim 2 , wherein a part of the signal wires has a branch.

5 . The touch display panel as recited in claim 2 , wherein at least 70% of the area of the driving and sensing electrodes is located at the light-blocking matrix layer.

6 . The touch display panel as recited in claim 2 , wherein a signal wire width of the driving electrodes, sensing electrodes and signal wires is between 3 μm and 50 μm.

7 . The touch display panel as recited in claim 1 , wherein the material of the sensing circuit is gold, silver, copper, tin, molybdenum, aluminum, alloy, graphite, graphene or their any combination.

8 . The touch display panel as recited in claim 2 , wherein the sensing circuit includes:
a plurality of grounding electrodes disposed between and separated from the driving electrodes and the sensing electrodes.

9 . The touch display panel as recited in claim 2 , wherein the driving electrodes and the sensing electrodes are arranged with a rectangular shape, “ ” shape, comb shape or their any combination.

10 . The touch display panel as recited in claim 2 , wherein the sensing electrodes, the driving electrodes and the signal wires are composed of a layout circuit located at the light-blocking matrix layer.

11 . The touch display panel as recited in claim 10 , wherein the shape of the layout circuit includes an opening, a toothed shape, a lightning shape, a polygonal shape, a closed contour or their any combination, or occupies the all range of the light-blocking matrix layer.

12 . The touch display panel as recited in claim 10 , wherein the pattern of the layout circuit includes a closed contour, an open curve, a net structure, a branched structure or their any combination.

13 . The touch display panel as recited in claim 1 , wherein the light-blocking matrix layer is disposed on another surface of the substrate.

14 . The touch display panel as recited in claim 1 , wherein the light-blocking matrix layer is disposed on the surface of the substrate.

15 . The touch display panel as recited in claim 1 , further comprising:
a display panel disposed on a light input side of the substrate, wherein the light-blocking matrix layer is disposed within the display panel.

16 . A touch display apparatus, comprising:
a touch display panel as recited in claim 1 ; a backlight module disposed on a side of the touch display panel; and at least a control unit electrically connected to the sensing circuit.

17 . A touch display panel, comprising:
a substrate; a light-blocking matrix layer; and a sensing circuit forming a single-layer structure on a surface of the substrate, wherein the sensing circuit includes a plurality of sensing electrodes, wherein the sensing electrode includes a plurality of connecting wires, wherein at least one node is formed by connecting three of the connecting wires.

18 . The touch display panel as recited in claim 17 , wherein any two included angles formed by the three connecting wires are different.

19 . The touch display panel as recited in claim 17 , wherein the plurality of connecting wires includes a broken wire between two adjacent nodes.

Assignees

• Innolux Corp

Inventors

• Hashimoto Kazuyuki
• Huang Yun-Chung
• Wu Bo-Han

Classifications

• G06F2203/04103

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

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/0443 Primary

  using a single layer of sensing electrodes · 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