Touch-control display device

• US 10,372,258 B2
• Filed: 04/19/2016
• Issued: 08/06/2019
• Est. Priority Date: 12/31/2015
• Status: Active Grant

• Current Assignee: Tianma Microelectronics Company Limited, Xiamen Tianma Micro-Electronics Co., Ltd.
• Original Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
• Inventors: Pan, Chaohuang, Shen, Poping, Chen, Zhonghuai, Ke, Sichao, Xu, Yumin, Zhang, Zhijian, Zhou, Ting, Kang, Jiaqi, Qiu, Yingzhang, Lin, Shaoting, Ma, Yuping
• Primary Examiner(s): Jansen, II, Michael J
• Application Number:
  US15/132,597
• Publication Number:
  US 20170192582A1
• Time in Patent Office: 1,204 Days
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A touch-control display device includes a driving module, a first substrate disposed with one or more first force touch-control components, and a second substrate disposed with one or more second force touch-control components and one or more self-capacitance type touch-control electrodes. The first substrate and the second substrate are oppositely disposed, with a variable gap between the first substrate and the second substrate. The second force touch-control component comprises a plurality of first electrodes arranged in a matrix, and the plurality of first electrodes are connected to the driving module respectively through their corresponding first conducting wires. The self-capacitance type touch-control electrode comprises a plurality of second electrodes arranged in a matrix, and the plurality of second electrodes are connected to the driving module respectively through their corresponding second conducting wires.

Claims

1. A touch-control display device, comprising:

a driving module;

a first substrate disposed with one or more first force touch-control components; and

a second substrate disposed with one or more second force touch-control components and one or more self-capacitance type touch-control electrodes,

wherein;

the first substrate and the second substrate are oppositely disposed, with a variable gap between the first substrate and the second substrate,

a plurality of supporting columns for supporting the variable gap is disposed between the first substrate and the second substrate, the plurality of supporting columns non-overlapping with the one or more first force touch-control components, the one or more second force touch-control components and the one or more self-capacitance type touch-control electrodes, along a direction perpendicular to the second substrate,

the one or more first force touch-control components have a grid-like structure, and a black matrix with a grid-like structure is disposed on an inner side of the first substrate, the grid-like structure of the one or more first force touch-control components being completely overlapped with the grid-like structure of the black matrix,

the one or more second force touch-control components comprise a plurality of first electrodes arranged in a matrix with a plurality of rows, and the plurality of first electrodes are connected to the driving module respectively through their corresponding first conducting wires,

the one or more self-capacitance type touch-control electrodes comprise a plurality of second electrodes arranged in a matrix with a plurality of rows, and the plurality of second electrodes are connected to the driving module respectively through their corresponding second conducting wires,

the plurality of second electrodes of the one or more self-capacitance type touch-control electrodes and the plurality of first electrodes of the one or more second force touch-control components are disposed in a same layer,

the touch-control display device is a liquid crystal display device, the first substrate is a color film substrate, the second substrate is an array substrate, and a liquid crystal layer is disposed between the color film substrate and the array substrate,

when the plurality of first electrodes includes at least certain number of hollow electrodes, the plurality of second electrodes are disposed in the hollow portions of the plurality of first electrodes,

when the plurality of second electrodes includes at least certain number of hollow electrodes, the plurality of first electrodes are disposed in the hollow portions of the plurality of second electrodes, and

each row of the matrix includes one or more of the hollow electrodes.

2. The touch-control display device according to claim 1, wherein:

in a touch-control detection stage, the driving module provides a touch-control detection signal to the plurality of second electrodes; and

in a force detection stage, the driving module provides a second force detection signal to the plurality of first electrodes, and provides a first force detection signal to the one or more first force touch-control components.

3. The touch-control display device according to claim 1, wherein the plurality of first electrodes further includes planar electrodes, the hollow electrodes and the planar electrodes are alternatively arranged.

4. The touch-control display device according to claim 1, wherein the plurality of second electrodes further includes planar electrodes, the hollow electrodes and the planar electrodes are alternatively arranged.

5. The touch-control display device according to claim 1,

wherein each of the first electrodes and each of the second electrodes are multiplexed as a same electrode, and each of the first conducting wires and each of the second conducting wires are multiplexed as a same conducting wire.

6. The touch-control display device according to claim 5, wherein:

in a touch-control detection stage, the driving module provides a touch-control detection signal to the multiplexed electrodes; and

in a force detection stage, the driving module provides a second force detection signal to the multiplexed electrodes, and provides a first force detection signal to the one or more first force touch-control components.

7. The touch-control display device according to claim 1, wherein, common electrodes are disposed on the array substrate;

and the one or more second force touch-control components, the common electrodes, and the one or more self-capacitance type touch-control electrodes are disposed in a same layer.

8. The touch-control display device according to claim 7, wherein one part of the common electrodes are multiplexed as the plurality of first electrodes, and another part of the common electrodes are multiplexed as the plurality of second electrodes.

9. The touch-control display device according to claim 8, wherein:

in a display stage, the driving module applies a common electrode signal to the common electrodes;

in a force detection stage, the driving module applies a second force detection signal to the part of the common electrodes multiplexed as the plurality of first electrodes, and concurrently applies a first force detection signal to the one or more first force touch-control components; and

in a touch-control detection stage, the driving module provides a touch-control detection signal to the another part of the common electrodes multiplexed as the plurality of second electrodes.

10. The touch-control display device according to claim 1, wherein:

in a light transmitting direction, a distance between the one or more first force touch-control components and the second substrate is smaller than a distance between the black matrix and the second substrate, and a projection of the one or more grid-like first force touch-control components falls within the black matrix.

11. The touch-control display device according to claim 1, wherein:

the one or more first force touch-control components comprises a plurality of grid electrodes arranged in a matrix, each grid electrode corresponds to a first electrode, and the plurality of grid electrodes are electrically connected;

in a light transmitting direction, a distance between the one or more first force touch-control components and the second substrate is smaller than a distance between the black matrix and the second substrate, and each grid electrode is completely overlapped with the grid-like structure of the black matrix.

12. The touch-control display device according to claim 1, wherein the one or more first force touch-control components comprises a plurality of block electrodes arranged in a matrix, each of the plurality of block electrodes corresponds to a first electrode of the plurality of first electrodes, and the plurality of block electrodes are electrically connected to each other.

13. The touch-control display device according to claim 1, wherein the one or more first force touch-control components are a planar electrode covering an entire inner side of the first substrate, and material of the one or more first force touch-control components is a transparent conductive metal material.

14. The touch-control display device according to claim 1, wherein material of the one or more first force touch-control components is a metal or a transparent conductive material.

16. The touch-control display device according to claim 1, wherein at least one of the plurality of second electrodes is connected to the driving module respectively through two or more corresponding second conducting wires.

15. A touch-control display device, comprising:

a driving module;

a first substrate disposed with one or more first force touch-control components; and

a second substrate disposed with one or more second force touch-control components and one or more self-capacitance type touch-control electrodes,

wherein;

the first substrate and the second substrate are oppositely disposed, with a variable gap between the first substrate and the second substrate;

a plurality of supporting columns for supporting the variable gap is disposed between the first substrate and the second substrate, the plurality of supporting columns non-overlapping with the one or more first force touch-control components, the one or more second force touch-control components and the one or more self-capacitance type touch-control electrodes, along a direction perpendicular to the second substrate;

the one or more first force touch-control components have a grid-like structure, and a black matrix with a grid-like structure is disposed on an inner side of the first substrate, the grid-like structure of the one or more first force touch-control components being completely overlapped with the grid-like structure of the black matrix;

the one or more second force touch-control components comprises a plurality of first electrodes arranged in a matrix with a plurality of rows, and the plurality of first electrodes are connected to the driving module respectively through their corresponding first conducting wires;

the one or more self-capacitance type touch-control electrodes comprises a plurality of second electrodes arranged in a matrix with a plurality of rows, and the plurality of second electrodes are connected to the driving module respectively through their corresponding second conducting wires;

the plurality of second electrodes of the one or more self-capacitance type touch-control electrodes and the plurality of first electrodes of the one or more second force touch-control components are disposed in a same layer, wherein;

there is a gap between adjacent second electrodes of the plurality of second electrodes;

two or more first electrodes are disposed in the gap between the two adjacent second electrodes; and

a size of a first electrode of the plurality of first electrodes is smaller than a size of a second electrode of the plurality of second electrodes;

when the plurality of first electrodes includes at least certain number of hollow electrodes, the plurality of second electrodes are disposed in the hollow portions of the plurality of first electrodes;

when the plurality of second electrodes includes at least certain number of hollow electrodes, the plurality of first electrodes are disposed in the hollow portions of the plurality of second electrodes; and

each row of the matrix includes one or more of the hollow electrodes.

17. The touch-control display device according to claim 15, wherein:

in a touch-control detection stage, the driving module provides a touch-control detection signal to the plurality of second electrodes; and

in a force detection stage, the driving module provides a second force detection signal to the plurality of first electrodes, and provides a first force detection signal to the one or more first force touch-control components.

18. The touch-control display device according to claim 15, wherein:

each of the plurality of first electrodes and each of the plurality of second electrodes are multiplexed as a same electrode, and each of the first conducting wires and each of the second conducting wires are multiplexed as a same conducting wire.

19. The touch-control display device according to claim 18, wherein:

in a touch-control detection stage, the driving module provides a touch-control detection signal to the multiplexed electrode; and

in a force detection stage, the driving module provides a second force detection signal to the multiplexed electrode, and provides a first force detection signal to the one or more first force touch-control components.

20. The touch-control display device according to claim 15, wherein:

common electrodes are disposed on the array substrate; and

the one or more second force touch-control components, the common electrodes, and the one or more self-capacitance type touch-control electrodes are disposed in a same layer.