TOUCH-CONTROL DISPLAY DEVICE

• US 20170192582A1
• Filed: 04/19/2016
• Published: 07/06/2017
• Est. Priority Date: 12/31/2015
• Status: Active Grant

• Current Assignee: Tianma Microelectronics Company Limited, Xiamen Tianma Micro-Electronics Co., Ltd.
• Original Assignee: Tianma Microelectronics Company Limited, Xiamen Tianma Micro-Electronics Co., Ltd.
• Inventors: ZHANG, ZHIJIAN, PAN, CHAOHUANG, SHEN, POPING, XU, YUMIN, ZHOU, TING, CHEN, ZHONGHUAI, KE, SICHAO, LIN, SHAOTING, MA, YUPING, KANG, JIAQI, QIU, YINGZHANG
• Granted Patent: US 10,372,258 B2
• Time in Patent Office: 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;

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; and

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.

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

3. 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 first force touch-control components.

4. The touch-control display device according to claim 1, wherein at least certain number of the first electrodes are hollow electrodes, the second electrodes are disposed in the hollow portions of the first electrodes.

5. The touch-control display device according to claim 1, wherein at least certain number of the second electrodes are hollow electrodes, the first electrodes are disposed in the hollow portions of the second electrodes.

6. 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.

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

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

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

8. The touch-control display device according to claim 2, wherein, common electrodes are disposed on the array substrate;

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

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

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

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

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

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

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

the first force touch-control component has a grid-like structure; and

in a light transmitting direction, the first force touch-control component is closer to the liquid crystal layer than a black matrix, and projection of the grid-like first force touch-control component falls within the black matrix.

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

the first force touch-control component 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; and

in a light transmitting direction, the plurality of grid electrodes are closer to the liquid crystal layer than a black matrix, and projection of the plurality of grid electrode falls within the black matrix.

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

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

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