CN106201115A - A kind of pressure touch device and display device - Google Patents

Abstract

The invention discloses a pressure touch device and a display device, which are used to improve the pressure touch precision of the pressure touch device under the condition of avoiding electrical signal interference. The pressure touch device includes an opposing substrate and an array substrate arranged opposite to each other, a backlight located on the side of the array substrate away from the opposing substrate, and a backlight housing supporting the backlight. The pressure touch The control device further includes: a first electrode layer arranged on the side of the array substrate away from the opposite substrate, the first electrode layer is connected to a ground line; The second electrode layer between them, wherein the first electrode layer and the second electrode layer form a touch structure with a pressure touch function; and a touch detection chip electrically connected to the second electrode layer.

Description

A pressure touch device and display device

technical field

The present invention relates to the field of touch technology, in particular to a pressure touch device and a display device.

Background technique

At present, touch panels have been widely used in portable terminals such as mobile phones, tablet computers (PADs), notebook computers, and other display devices.

Referring to FIG. 1 , it shows the structure of a pressure touch device in the prior art, including an opposing substrate 01 and an array substrate 02 arranged opposite to the box, a backlight 03 located on the side of the array substrate away from the opposing substrate, and a support for the backlight 03 Backlight shell 04, the touch sensing layer 1 located under the backlight shell, the pressure touch device also includes an outer frame 2 surrounding the opposite substrate, array substrate, backlight, backlight shell and touch sensing layer, wherein the outer frame 2 is connected to the ground Line, as a touch reference layer.

Therefore, in the prior art, the electrical signal when the liquid crystal flips may interfere with the signal of the touch sensing layer, and when the pressure touch device is dropped, the outer frame is likely to be deformed, resulting in a gap between the touch sensing layer and the touch reference layer. The uneven gap between them causes the pressure touch to fail, resulting in a decrease in the precision of the pressure touch.

Contents of the invention

In view of this, the present invention provides a pressure touch device and a display device, which are used to improve the pressure touch accuracy of the pressure touch device under the condition of avoiding electrical signal interference.

An embodiment of the present invention provides a pressure touch device, including an opposing substrate and an array substrate arranged opposite to each other, a backlight located on the side of the array substrate away from the opposing substrate, and a backlight supporting the backlight. shell, the pressure touch panel further includes:

a first electrode layer disposed on a side of the array substrate away from the counter substrate, the first electrode layer is connected to a ground line;

A second electrode layer disposed between the first electrode layer and the backlight shell, wherein the first electrode layer and the second electrode layer form a touch structure with a pressure touch function;

And a touch detection chip electrically connected to the second electrode layer.

In a possible implementation manner, in the above-mentioned pressure touch device provided by the embodiment of the present invention, the second electrode layer disposed between the first electrode layer and the backlight housing includes:

a second electrode layer disposed between the backlight shell and the backlight; or,

The second electrode layer is arranged on the light emitting side of the backlight source.

In a possible implementation manner, in the above-mentioned pressure touch device provided by the embodiment of the present invention, the backlight source includes an optical film material, a light guide plate, and a reflective layer in a direction away from the array substrate in sequence. When the When the second electrode layer is arranged between the backlight shell and the backlight source, the second electrode layer is located between the backlight shell and the reflective layer.

In a possible implementation manner, in the above-mentioned pressure touch device provided by the embodiment of the present invention, the backlight source includes an optical film material, a light guide plate, and a reflective layer in a direction away from the array substrate in sequence. When the When the second electrode layer is arranged on the light output side of the backlight, the second electrode layer is located on a side of the optical film material away from the light guide plate.

In a possible implementation manner, in the above pressure touch device provided by the embodiment of the present invention, the pressure touch panel further includes: a polarizer arranged between the array substrate and the first electrode layer;

Wherein, the first electrode layer is an electrode made of indium tin oxide material.

In a possible implementation manner, in the above-mentioned pressure touch device provided by the embodiment of the present invention, when the second electrode layer is arranged between the backlight shell and the backlight source, the second electrode layer It is an electrode made of metal material; or, the second electrode layer is an electrode made of indium tin oxide material.

In a possible implementation manner, in the above-mentioned pressure touch device provided by the embodiment of the present invention, when the second electrode layer is arranged on the light output side of the backlight, the second electrode layer is made of indium tin oxide Electrodes made of materials.

In a possible implementation manner, in the above-mentioned pressure touch device provided by the embodiment of the present invention, the first electrode layer includes a plurality of first sub-electrodes in a strip structure or a rhombus structure arranged in an array.

In a possible implementation manner, in the above-mentioned pressure touch device provided by the embodiment of the present invention, the second electrode layer includes a plurality of second sub-electrodes in a strip structure or a diamond structure arranged in an array.

Correspondingly, an embodiment of the present invention also provides a display device, including any one of the pressure touch devices provided in the embodiments of the present invention.

The beneficial effects of the present invention are as follows:

An embodiment of the present invention provides a pressure touch device, including an opposing substrate and an array substrate arranged opposite to each other, a backlight located on the side of the array substrate away from the opposing substrate, and a backlight supporting the backlight. shell, the pressure touch panel further includes: a first electrode layer disposed on the side of the array substrate away from the opposing substrate, the first electrode layer is connected to a ground line; disposed on the first electrode layer layer and the second electrode layer between the backlight shell, wherein the first electrode layer and the second electrode layer form a touch structure with a pressure touch function; and a contact electrically connected to the second electrode layer control detection chip. It can be seen that in the pressure touch device provided by the embodiment of the present invention, the touch structure is composed of a first electrode layer and a second electrode layer, and the first electrode layer is arranged on the side of the array substrate away from the opposite substrate and grounded, and the second electrode layer The second electrode layer is arranged between the first electrode layer and the backlight shell. Because the first electrode layer is grounded, the interference of the electrical signal in the array substrate to the touch structure is avoided, and because the first electrode layer and the second electrode layer are both located on the backlight shell. In this way, the problem of uneven gap between the first electrode layer and the second electrode layer when the pressure touch device is dropped and deformed is avoided, and the precision of the pressure touch control is further improved.

Description of drawings

FIG. 1 is a schematic structural diagram of a pressure touch device provided in the prior art;

FIG. 2(a) and FIG. 2(b) are schematic structural diagrams of a pressure touch device provided by an embodiment of the present invention, respectively;

FIG. 3(a) and FIG. 3(b) are schematic structural diagrams of a second pressure touch device provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a third pressure touch device provided by an embodiment of the present invention;

FIG. 5(a) and FIG. 5(b) are schematic structural diagrams of the first electrode layer of the embodiment of the present invention, respectively;

FIG. 6 is a schematic structural diagram of a fourth pressure touch device provided by an embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention provides a pressure touch device and a display device, which are used to improve the pressure touch accuracy of the pressure touch device under the condition of avoiding electrical signal interference.

The specific implementation manners of the pressure touch device and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The thickness and shape of each film layer in the drawings do not reflect the real scale, and the purpose is only to illustrate the content of the present invention.

Referring to FIG. 2(a) and FIG. 2(b), a pressure touch device provided by an embodiment of the present invention includes an opposing substrate 01 and an array substrate 02 arranged opposite to each other, and is located between the array substrate 02 and the array substrate 02 away from the opposing substrate 01. side of the backlight 03, and the backlight housing 04 supporting the backlight 03, the pressure touch panel also includes: the first electrode layer 10 arranged on the side of the array substrate 02 away from the opposite substrate 01, the first electrode layer and the ground wire Connected; the second electrode layer 11 arranged between the first electrode layer 10 and the backlight shell 04, wherein the first electrode layer 10 and the second electrode layer 11 form a touch structure with a pressure touch function; and the second electrode The layers of the touch detection chip are electrically connected (the touch detection chip is not shown in FIG. 2(a) and FIG. 2(b)).

The pressure touch device provided by the embodiment of the present invention includes an opposing substrate and an array substrate arranged opposite to each other, a backlight located on the side of the array substrate away from the opposing substrate, and a backlight housing supporting the backlight. The pressure touch panel also includes : the first electrode layer arranged on the side of the array substrate away from the opposite substrate, the first electrode layer is connected to the ground wire; the second electrode layer arranged between the first electrode layer and the backlight shell, wherein the first electrode layer and The second electrode layer forms a touch structure with pressure touch function; and a touch detection chip electrically connected to the second electrode layer. It can be seen that in the pressure touch device provided by the embodiment of the present invention, the touch structure is composed of a first electrode layer and a second electrode layer, and the first electrode layer is arranged on the side of the array substrate away from the opposite substrate and grounded, and the second electrode layer The second electrode layer is arranged between the first electrode layer and the backlight shell. Because the first electrode layer is grounded, the interference of the electrical signal in the array substrate to the touch structure is avoided, and because the first electrode layer and the second electrode layer are both located on the backlight shell. In this way, the problem of uneven gap between the first electrode layer and the second electrode layer when the pressure touch device is dropped and deformed is avoided, and the precision of the pressure touch control is further improved.

In a specific embodiment, in the above-mentioned pressure touch device provided by the embodiment of the present invention, the second electrode layer disposed between the first electrode layer and the backlight shell includes: a second electrode layer disposed between the backlight shell and the backlight The electrode layer; or, the second electrode layer disposed on the light emitting side of the backlight source.

Specifically, referring to FIG. 2(a), the second electrode layer 11 is arranged between the backlight housing 04 and the backlight source 03, the first electrode layer 10 is arranged on the side of the array substrate 02 away from the counter substrate 01 and grounded, and the second electrode layer Layer 11 is connected to the touch detection chip, so that the touch structure with pressure touch function composed of the first electrode layer 10 and the second electrode layer 11 can avoid the interference of electrical signals in the array substrate, and because the first electrode layer and the second electrode layer The electrode layers are all located in the backlight housing, thereby avoiding the problem of uneven gap between the first electrode layer and the second electrode layer when the pressure touch device is dropped and deformed, and further improving the precision of the pressure touch control.

Specifically, referring to FIG. 2(b), the second electrode layer 11 is arranged on the light emitting side of the backlight 03, the first electrode layer 10 is arranged on the side of the array substrate 02 away from the opposite substrate 01 and is grounded, and the second electrode layer 11 is connected to the contactor. control detection chip, so that the touch structure with pressure touch function composed of the first electrode layer 10 and the second electrode layer 11 can avoid the interference of electrical signals in the array substrate, and because the first electrode layer and the second electrode layer are located In the backlight housing, the problem of uneven gap between the first electrode layer and the second electrode layer when the pressure touch device is dropped and deformed is avoided, and the precision of the pressure touch control is further improved.

In a specific embodiment, in the above-mentioned pressure touch device provided by the embodiment of the present invention, referring to FIG. 3(a), the backlight source 03 includes an optical film material 031, a light guide plate 032, and a reflective layer 033 in a direction away from the array substrate in sequence. , when the second electrode layer 11 is disposed between the backlight shell and the backlight source, the second electrode layer 11 is located between the backlight shell 04 and the reflective layer 033 .

In a specific embodiment, in the above-mentioned pressure touch device provided by the embodiment of the present invention, referring to FIG. 3( b ), the backlight source 03 includes an optical film material 031 , a light guide plate 032 and a reflective layer 033 in a direction away from the array substrate in sequence. , when the second electrode layer is arranged on the light emitting side of the backlight, the second electrode layer 11 is located on the side of the optical film material 031 away from the light guide plate 032 .

In a specific embodiment, in the above-mentioned pressure touch device provided by the embodiment of the present invention, referring to FIG. 4 , the pressure touch panel further includes: a polarizer 13 disposed between the array substrate 02 and the first electrode layer 10; wherein, The first electrode layer 13 is an electrode made of indium tin oxide (ITO) material.

Wherein, for the pressure touch devices shown in Fig. 2(a), Fig. 2(b), Fig. 3(a) and Fig. 3(b), all include a polarizer located between the array substrate and the first electrode layer . Wherein, FIG. 4 only illustrates the structure shown in FIG. 3( a ).

Specifically, since the first electrode layer is arranged on the side of the polarizer away from the array substrate, in order to prevent the light emitted from the light output side of the backlight from being blocked by the first electrode layer, the first electrode layer is set to have conductivity and light transmission, Preferably, indium tin oxide is used to make the first electrode layer. Of course, the embodiments of the present invention are not limited to using indium tin oxide to make the first electrode layer, and other conductive and light-transmitting materials can be used for making the first electrode layer.

It should be noted that, generally, the pattern of the black matrix is arranged on the array substrate or the opposite substrate. When the first electrode layer is set to the same pattern as the pattern of the black matrix, the first electrode layer can be made of a conductive material. production, and will not block the light emitted from the light emitting side of the backlight. The material of the first electrode layer is not specifically limited here.

In a specific embodiment, in the above-mentioned pressure touch device provided by the embodiment of the present invention, when the second electrode layer is arranged between the backlight shell and the backlight source, the second electrode layer is an electrode made of a metal material; or, the second electrode layer The second electrode layer is an electrode made of indium tin oxide (ITO) material.

Specifically, when the second electrode layer is arranged between the backlight shell and the backlight source, since the backlight source is located above the second electrode layer, the layer structure of the second electrode layer will not block the light emitted from the light output side of the backlight source, so the second The electrode layer can be made of metal material or made of indium tin oxide material. Wherein, the specific material of the second electrode layer is not specifically limited here.

In a specific embodiment, in the above-mentioned pressure touch device provided by the embodiment of the present invention, when the second electrode layer is arranged on the light emitting side of the backlight, the second electrode layer is an electrode made of indium tin oxide material.

Specifically, since the second electrode layer is arranged on the light-emitting side of the backlight, in order to prevent the light emitted from the light-emitting side of the backlight from being blocked by the second electrode layer, the second electrode layer is set to have conductivity and light transmission, preferably , use indium tin oxide to make the second electrode layer, of course, the embodiments of the present invention are not limited to use indium tin oxide to make the second electrode layer, and other conductive and light-transmitting materials can be used for making the second electrode layer.

It should be noted that, generally, the array substrate or the opposite substrate is provided with a black matrix pattern, when the second electrode layer is set to the same pattern as the black matrix pattern, that is, the structure of the first electrode layer and the second electrode layer Similarly, the second electrode layer can be made of conductive material without blocking the light emitted from the light emitting side of the backlight. The material of the second electrode layer is not specifically limited here.

In a specific embodiment, in the above-mentioned pressure touch device provided by the embodiment of the present invention, the first electrode layer includes a plurality of first sub-electrodes arranged in an array in a stripe structure or a diamond structure.

Specifically, when the pattern of the first electrode layer is different from that of the black matrix in the array substrate or the opposite substrate, the first electrode layer is made of indium tin oxide material. Referring to FIG. 5( a ), the first electrode layer 10 includes a plurality of strip-shaped first sub-electrodes 101 arranged in an array, and every two adjacent strip-shaped first sub-electrodes 101 are electrically connected. Alternatively, referring to FIG. 5( b ), the first electrode layer 10 includes a plurality of first sub-electrodes 101 arranged in an array in a rhombic structure, and every two adjacent first sub-electrodes are electrically connected.

It should be noted that the first electrode layer is grounded and serves as a reference layer of the touch structure, so the first electrode layer can also be designed as a whole layer structure. Preferably, in order to prevent the first electrode layer from being transparent to light from the backlight source, the first electrode layer is arranged in a plurality of strip structures or rhombus structures arranged in an array with slits.

In a specific embodiment, in the above-mentioned pressure touch device provided by the embodiment of the present invention, the second electrode layer includes a plurality of second sub-electrodes arranged in an array in a stripe structure or a diamond structure.

Specifically, referring to the structure of the first electrode layer shown in FIG. 5( a ) and FIG. 5( b ), the shape of the second electrode layer may be the same as that of the first electrode layer. The similarities will not be repeated here.

It should be noted that the second electrode layer is used as the touch sensing layer of the touch structure, and the second electrode layer needs to detect the strength and position of the user's pressing. For the sub-electrodes, the second sub-electrodes in every two adjacent rows or two adjacent columns are insulated from each other, and the first sub-electrodes in each row or column are electrically connected.

The pressure touch device provided by the embodiment of the present invention will be described in detail below by taking the second electrode layer located between the backlight source and the backlight shell as a specific embodiment.

Referring to FIG. 6 , the pressure touch device provided by the embodiment of the present invention includes an opposing substrate 01 and an array substrate 02 arranged opposite to each other, a backlight located on the side of the array substrate 02 away from the opposing substrate 01 , and a backlight supporting the backlight The shell 04, in which the backlight source includes an optical film material 031, a light guide plate 032, a reflective layer 033, and a light source 034 located on the light incident side of the light guide plate in a direction away from the array substrate in sequence. The pressure touch panel also includes: 02 The first electrode layer 10 on the side away from the opposite substrate 01, the first electrode layer is connected to the ground line, the second electrode layer 11 is arranged between the reflective layer 033 and the backlight housing 04, and the second electrode layer is connected to the contact connected to the control detection chip. Wherein, the pressure touch device further includes: a bracket 05 for fixing the backlight source and the array substrate, a word glue 06 for laminating the backlight source 03 and the array substrate, and a frame 07 for supporting the backlight shell.

To sum up, in the pressure touch device provided by the embodiment of the present invention, the first electrode layer with the touch reference layer is arranged on the side of the array substrate away from the opposite substrate, so that the first electrode layer in the touch structure avoids Any electrical signal carried by the flipping of the liquid crystal in the array substrate; the second electrode layer with touch sensing function is arranged in the backlight shell, so that even if the product falls and the outer frame is deformed, the backlight shell will not cause deformation, so the second The gap between the electrode layer and the first electrode layer remains unchanged, avoiding the force touch effect caused by the change of the gap between the first electrode layer and the second electrode layer, thereby improving the precision of the pressure touch.

Correspondingly, an embodiment of the present invention also provides a display device, including any one of the pressure touch devices provided in the embodiments of the present invention. The display device may be any product or component with a touch function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like. For the implementation of the display device, reference may be made to the above-mentioned embodiments of the pressure touch device, and repeated descriptions will not be repeated.

An embodiment of the present invention provides a pressure touch device, including an opposing substrate and an array substrate arranged opposite to each other, a backlight located on the side of the array substrate away from the opposing substrate, a backlight housing supporting the backlight, and a pressure touch panel. It also includes: a first electrode layer arranged on the side of the array substrate away from the opposite substrate, the first electrode layer is connected to the ground line; a second electrode layer arranged between the first electrode layer and the backlight shell, wherein the first electrode layer layer and the second electrode layer form a touch structure with pressure touch function; and a touch detection chip electrically connected to the second electrode layer. It can be seen that in the pressure touch device provided by the embodiment of the present invention, the touch structure is composed of a first electrode layer and a second electrode layer, and the first electrode layer is arranged on the side of the array substrate away from the opposite substrate and grounded, and the second electrode layer The second electrode layer is arranged between the first electrode layer and the backlight shell. Because the first electrode layer is grounded, the interference of the electrical signal in the array substrate to the touch structure is avoided, and because the first electrode layer and the second electrode layer are both located on the backlight shell. In this way, the problem of uneven gap between the first electrode layer and the second electrode layer when the pressure touch device is dropped and deformed is avoided, and the precision of the pressure touch control is further improved.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (10)

1. A pressure touch device comprises an opposite substrate and an array substrate which are arranged opposite to each other, a backlight source which is positioned on one side of the array substrate far away from the opposite substrate, and a backlight shell which supports the backlight source, and is characterized by further comprising:

the first electrode layer is arranged on one side of the array substrate, which is far away from the opposite substrate, and is connected with a grounding wire;

the second electrode layer is arranged between the first electrode layer and the backlight shell, wherein the first electrode layer and the second electrode layer form a touch structure with a pressure touch function;

and the touch detection chip is electrically connected with the second electrode layer.

2. The pressure touch device of claim 1, wherein the second electrode layer disposed between the first electrode layer and the backlight housing comprises:

a second electrode layer disposed between the backlight housing and the backlight source; or,

and the second electrode layer is arranged on the light-emitting side of the backlight source.

3. The pressure touch device according to claim 2, wherein the backlight source comprises an optical film, a light guide plate and a reflective layer in a direction away from the array substrate, and when the second electrode layer is disposed between the backlight housing and the backlight source, the second electrode layer is disposed between the backlight housing and the reflective layer.

4. The pressure touch device according to claim 2, wherein the backlight source comprises an optical film, a light guide plate and a reflective layer in a direction away from the array substrate, and when the second electrode layer is disposed on a light exit side of the backlight source, the second electrode layer is disposed on a side of the optical film away from the light guide plate.

5. The pressure touch device of claim 1, further comprising: the polaroid is arranged between the array substrate and the first electrode layer;

wherein the first electrode layer is an electrode made of an indium tin oxide material.

6. The pressure touch device according to claim 2 or 3, wherein when the second electrode layer is disposed between the backlight case and the backlight source, the second electrode layer is an electrode made of a metal material; or the second electrode layer is an electrode made of an indium tin oxide material.

7. The pressure touch device according to claim 2 or 4, wherein when the second electrode layer is disposed on the light-emitting side of the backlight, the second electrode layer is an electrode made of an indium tin oxide material.

8. The pressure touch device according to claim 1 or 5, wherein the first electrode layer comprises a plurality of first sub-electrodes arranged in an array in a stripe structure or a diamond structure.

9. The pressure touch device according to any one of claims 1 to 7, wherein the second electrode layer comprises a plurality of second sub-electrodes arranged in an array and having a stripe structure or a diamond structure.

10. A display device comprising the pressure touch device according to any one of claims 1 to 9.