Touch-control display device

Patent metadata

Field	Value
Publication number	US-2017192565-A1
Application number	US-201615139436-A
Country	US
Kind code	A1
Filing date	Apr 27, 2016
Priority date	Dec 31, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

A touch-control display device includes a driving module, a display panel having a first force touch-control component and a self-capacitance type touch control-electrode, and a backlight module disposed with the display panel and having a second force touch-control component, with a variable gap formed between the first force touch-control component and the second force touch-control component. The first touch-control component comprises a plurality of first electrodes arranged in a matrix. The second force touch-control component is an electrical conductive layer. The self-capacitance type touch-control electrode comprises a plurality of second electrodes arranged in a matrix.

First claim

What is claimed is:

1 . A touch-control display device, comprising:
a driving module; a display panel having a first force touch-control component and a self-capacitance type touch control-electrode; and a backlight module disposed with the display panel and having a second force touch-control component, with a variable gap formed between the first force touch-control component and the second force touch-control component; wherein: the first touch-control component comprises a plurality of first electrodes arranged in a matrix; the second force touch-control component is an electrical conductive layer; and the self-capacitance type touch-control electrode comprises a plurality of second electrodes arranged in a matrix.

2 . The touch-control display device according to claim 1 , wherein:
the plurality of first electrodes are connected to the driving module respectively through corresponding first conducting wires; the plurality of second electrodes are connected to the driving module respectively through corresponding second conducting wires; and the plurality of first electrodes of the first force touch-control component and the plurality of second electrodes of the self-capacitive type touch-control electrode are disposed on a same layer.

3 . The touch-control display device according to claim 1 , wherein:
the display panel is a liquid crystal display panel having a counter substrate and an array substrate; a liquid crystal layer is disposed between the counter substrate and the array substrate; and the first force touch-control component and the self-capacitance type touch control electrode are disposed between the counter substrate and the array substrate.

4 . The touch-control display device according to claim 3 , wherein the first force touch-control component and the self-capacitance type touch control electrode are disposed at a side of the array substrate facing the counter substrate.

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

6 . The touch-control display device according to claim 1 , wherein at least certain number of first electrodes are hollow electrodes, and the second electrodes are disposed within the hollow portions of the hollow first electrodes, and engraved seams are formed in spacing between the hollow first electrodes and the second electrodes.

7 . The touch-control display device according to claim 1 , wherein at least certain number of second electrodes are hollow electrodes, and the first electrodes are disposed within the hollow portions of the hollow second electrodes, and engraved seams are formed in spacing between the hollow second electrodes and the first electrodes.

8 . The touch-control display device according to claim 1 , wherein each of the first electrodes and each of the second electrodes are a same electrode, and each of the first conducting wires and each of the second conducting wires are a same conducting wire.

9 . The touch-control display device according to claim 8 , wherein:
in a touch-control detection stage, the driving module provides a touch-control detection signal to the plurality of electrodes; and in a force detection stage, the driving module provides a first force detection signal to the plurality of electrodes, and provides a second force detection signal to the second force touch-control component.

10 . The touch-control display device according to claim 3 , further comprising:
common electrodes disposed between the counter substrate and the array substrate, wherein: the first force touch-control component, the common electrodes, and the self-capacitance type touch-control electrode are disposed in a same layer; at least a part of the common electrodes are multiplexed as first force touch-control components; and at least a part of the common electrodes are multiplexed as self-capacitance type touch-control electrodes.

11 . The touch-control display device according to claim 10 , 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 first force detection signal to the plurality of common electrodes operating as a first force touch-control component, and concurrently applies a second force detection signal to the second force touch-control component; and in a touch-control detection stage, the driving module provides a touch-control detection signal to the plurality of common electrodes operating as a self-capacitance type touch-control electrode.

12 . The touch-control display device according to claim 1 , wherein:
the backlight module comprises a plastic frame, a light guide plate disposed inside the plastic frame, and a light source disposed at a light-entering side of the light guide plate; and the electrical conductive layer is disposed on the upper side or lower side of the light guide plate.

13 . The touch-control display device according to claim 12 , wherein the backlight module further comprises a metal frame carrying the plastic frame and the light guide plate, and the electrical conductive layer is the metal frame.

14 . The touch-control display device according to claim 12 , wherein:
the backlight module further comprises a main flexible print circuit (FPC) electrically connected to the driving module; the main FPC comprises a connection terminal extending in a direction of the metal frame, and an electrical conductive end disposed on the connection terminal; and the electrical conductive end is electrically connected to the metal frame through a conductive adhesive layer.

15 . The touch-control display device according to claim 12 , wherein:
the backlight module further comprises a main flexible print circuit (FPC) and a backlight FPC; the main FPC is electrically connected to the driving module, and the backlight FPC is electrically connected to the main FPC; the backlight FPC comprises a connection terminal extending to the metal frame, and an electrical conductive end disposed on the connection terminal; and the electrical conductive end is electrically connected to the metal frame through a conductive adhesive layer.

16 . The touch-control display device according to claim 1 , wherein a light-shading tape is disposed at edges between the display panel and the backlight module, and the gap formed by the display panel, the backlight module, and the light-shading tape is the variable gap.

17 . The touch-control display device according to claim 16 , wherein a thickness of the light shading tape is in the range between 0.05 mm to 0.2 mm.

Assignees

• Xiamen Tianma Micro Electronics Co Ltd
• Tianma Microelectronics 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

Classifications

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• G02B6/0091

  of the light source relative to the light guide (G02B6/0021 takes precedence) · CPC title

• G06F3/0414

  using force sensing means to determine a position · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• H05K1/147

  at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence) · CPC title