Touch substrate and touch device

Patent metadata

Field	Value
Publication number	US-2016357313-A1
Application number	US-201514893300-A
Country	US
Kind code	A1
Filing date	Jun 18, 2015
Priority date	Dec 29, 2014
Publication date	Dec 8, 2016
Grant date	—

Abstract

A touch substrate and a touch device are provided. The touch substrate includes a thin film transistor, and a common electrode layer and a pixel electrode layer that are transparent. The common electrode layer includes a common electrode and a touch driving electrode that extend along a first direction, and an insulating medium is provided between the common electrode and the touch driving electrode. On the touch substrate, there is further provided a touch sensing electrode that is disposed in a layer different from the touch driving electrode and extends along a second direction, and the touch sensing electrode covers a gap region between the common electrode and the touch driving electrode. Within a period of displaying a frame of image, the touch driving electrode transmits a common electrode signal and a touch scanning signal in a time-division mode.

First claim

1 . A touch substrate, comprising a thin film transistor, and a common electrode layer and a pixel electrode layer that are transparent, wherein,
the common electrode layer includes a common electrode and a touch driving electrode that extend along a first direction, and an insulating medium is provided between the common electrode and the touch driving electrode; on the touch substrate, there is further provided a touch sensing electrode that is disposed in a layer different from the touch driving electrode and extends along a second direction, and the touch sensing electrode covers a gap region between the common electrode and the touch driving electrode; and within a period of displaying a frame of image, the touch driving electrode transmits a common electrode signal and a touch scanning signal in a time-division mode.

2 . The touch substrate according to claim 1 , wherein,
a gate line and a data line disposed in different layers are formed on the touch substrate: the touch driving electrode includes a plurality of sub-electrodes extending along a direction of the gate line and connected to each other, the common electrode includes a plurality of sub-electrodes provided between the sub-electrodes of the touch driving electrode; and the touch sensing electrode includes a plurality of frame-like sub-electrodes extending along a direction of the data line and connected to each other.

3 . The touch substrate according to claim 1 , wherein,
a gate line and a data line disposed in different layers are formed on the touch substrate; the touch driving electrode includes a plurality of sub-electrodes extending along a direction of the data line and connected to each other, the common electrode includes a plurality of sub-electrodes provided between the sub-electrodes of the touch driving electrode; and the touch sensing electrode includes a plurality of frame-like sub-electrodes extending along a direction of the gate line and connected to each other.

4 . The touch substrate according to claim 2 , wherein,
the plurality of sub-electrodes of the touch driving electrode are diamond-shaped electrodes, the plurality of sub-electrodes of the common electrode are diamond-shaped electrodes, and the plurality of frame-like sub-electrodes of the touch sensing electrode are diamond-shaped frame-like electrodes.

5 . The touch substrate according to claim 2 , wherein,
the plurality of sub-electrodes of the common electrode are connected with each other by a common electrode line disposed in a same layer as the gate line.

6 . The touch substrate according to claim 2 , wherein,
the touch driving electrode is connected to a connecting electrode through a via hole, and the connecting electrode is disposed in a same layer as the gate line.

7 . The touch substrate according to claim 2 , wherein,
the plurality of frame-like sub-electrodes of the touch sensing electrode are provided not only to cover the gap region between the common electrode and the touch driving electrodes but also to cover a portion of the common electrode.

8 . The touch substrate according to claim 1 , wherein,
the pixel electrode layer includes a plurality of pixel electrodes arranged in a matrix form; the touch sensing electrode includes metallic grid lines that extend transversely or longitudinally and connected with each other, the metallic grid lines extending transversely are provided between adjacent rows of the pixel electrodes, and the metallic grid lines extending longitudinally are provided between adjacent columns of the pixel electrodes.

9 . The touch substrate according to claim 1 , further comprising: a base substrate, wherein,
the common electrode layer, the pixel electrode layer and the touch sensing electrode are sequentially disposed on the base substrate, and the common electrode layer is closer to the base substrate compared with the pixel electrode layer and the touch sensing electrode.

10 . The touch substrate according to claim 9 , wherein,
the common electrode layer is a plate-like electrode layer, and the pixel electrode layer is a slit electrode layer.

11 . A touch device, comprising the touch substrate according to claim 1 .

12 . The touch device according to claim 11 , further comprising a counter substrate, wherein,
a color filter layer and a black matrix are provided on the counter substrate; and a projection of the touch sensing electrode of the touch substrate on the counter substrate is within a region of the black matrix.

13 . The touch substrate according to claim 3 , wherein,
the plurality of sub-electrodes of the touch driving electrode are diamond-shaped electrodes, the plurality of sub-electrodes of the common electrode are diamond-shaped electrodes, and the plurality of frame-like sub-electrodes of the touch sensing electrode are diamond-shaped frame-like electrodes,

14 . The touch substrate according to claim 3 , wherein,
the plurality of sub-electrodes of the common electrode are connected with each other by a common electrode line disposed in a same layer as the gate line.

15 . The touch substrate according to claim 3 , wherein,
the touch driving electrode is connected to a connecting electrode through a via hole, and the connecting electrode is disposed in a same layer as the gate line.

16 . The touch substrate according to claim 3 , wherein,
the plurality of frame-like sub-electrodes of the touch sensing electrode are provided not only to cover the gap region between the common electrode and the touch driving electrodes but also to cover a portion of the common electrode.

17 . The touch substrate according to claim 2 , wherein,
the pixel electrode layer includes a plurality of pixel electrodes arranged in a matrix form; the touch sensing electrode includes metallic grid lines that extend transversely or longitudinally and connected with each other, the metallic grid lines extending transversely are provided between adjacent rows of the pixel electrodes, and the metallic grid lines extending longitudinally are provided between adjacent columns of the pixel electrodes.

18 . The touch substrate according to claim 2 , further comprising: a base substrate, wherein,
the common electrode layer, the pixel electrode layer and the touch sensing electrode are sequentially disposed on the base substrate, and the common electrode layer is closer to the base substrate compared with the pixel electrode layer and the touch sensing electrode.

19 . The touch substrate according to claim 3 , wherein,
the pixel electrode layer includes a plurality of pixel electrodes arranged in a matrix form; the touch sensing electrode includes metallic grid lines that extend transversely or longitudinally and connected with each other, the metallic grid lines extending transversely are provided between adjacent rows of the pixel electrodes, and the metallic grid lines extending longitudinally are provided between adjacent columns of the pixel electrodes.

20 . The touch substrate according to claim 3 , further comprising: a base substrate, wherein,
the common electrode layer, the pixel electrode layer and the touch sensing electrode are sequentially disposed on the base substrate, and the common electrode layer is closer to the base substrate compared with the pixel electrode layer and the touch sensing electrode.

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Yang Shengji

Classifications

• G02F1/13338

  Input devices, e.g. touch panels · 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

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/045

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · CPC title