WO2020118837A1

WO2020118837A1 - Touch control panel and electronic device

Info

Publication number: WO2020118837A1
Application number: PCT/CN2019/071553
Authority: WO
Inventors: 陈碧
Original assignee: 武汉华星光电半导体显示技术有限公司
Priority date: 2018-12-12
Filing date: 2019-01-14
Publication date: 2020-06-18
Also published as: CN109669571B; CN109669571A

Abstract

Provided are a touch control panel and electronic device, said touch control panel comprising a substrate and a touch control layer (100); the touch control layer (100) comprises an electrode unit (10), comprising a first electrode (101) and a second electrode (102); the resistance value of said first electrode (101) and/or said second electrode (102) is related to the amount of deformation of the touch control panel.

Description

Touch panel and electronic device

Technical field

The invention relates to the field of touch control, in particular to a touch panel and an electronic device.

Background technique

With the development of mobile phone technology, terminal products such as mobile phones support functions such as touch control and pressure sensing.

In the prior art, in order to realize touch and pressure sensing functions, a touch layer needs to be provided in the terminal to realize the touch function, and a pressure sensing layer is provided to realize the pressure sensing function. This method requires the terminal to add an independent pressure sensing layer, which increases Product thickness.

That is, the existing terminal has a technical problem that a pressure sensing layer needs to be added to realize the pressure sensing function.

technical problem

The invention provides a touch panel and an electronic device to solve the technical problem of the existing terminal that a pressure sensing layer needs to be added to realize the pressure sensing function.

Technical solution

The invention provides a touch panel, which includes:

Substrate

A touch layer on the substrate, the touch layer includes at least two electrode units, and two adjacent electrode units are insulated and arranged,

The electrode unit includes:

A first electrode located on the substrate;

A second electrode located on the substrate, the first electrode is insulated from the second electrode;

The resistance value of the first electrode and/or the second electrode is related to the deformation amount of the touch panel.

In the touch panel of the present application, the first electrode includes at least one first branch, and the resistance value of the first branch is positively correlated with the deformation amount of the touch panel.

In the touch panel of the present application, the second electrode includes at least one second branch, and the resistance value of the second branch is positively related to the deformation amount of the touch panel.

In the touch panel of the present application, the second branches and/or the first branches are conductive loops formed by hollow wires, and are arranged in a staggered spiral shape.

In the touch panel of the present application, the orthographic projections of the first branch and the second branch on the surface of the touch panel do not overlap.

In the touch panel of the present application, the touch layer includes at least two electrode units distributed in an array;

In the first direction, the orthographic projection areas of the electrode unit on the surface of the touch panel are equal;

In the second direction, the orthographic projection area of the electrode unit on the surface of the touch panel gradually decreases or increases.

In the touch panel of the present application, the electrode unit further includes at least:

A first touch lead electrically connected to the first electrode;

A second touch lead electrically connected to the second electrode;

The first touch lead and the second touch lead of each electrode unit are insulated and arranged in parallel.

In the touch panel of the present application, the first electrode, the second electrode, the first touch lead and the second touch lead are arranged in the same layer.

In the touch panel of the present application, the first electrode is one of the sensing electrode and the driving electrode, and the second electrode is the other one that is different from the first electrode.

In the touch panel of the present application, the first electrode and the second electrode are transparent metals.

The present application also proposes an electronic device, wherein the electronic device includes a touch panel, and the touch panel includes:

Substrate

The electrode unit includes:

A first electrode located on the substrate;

In the electronic device of the present application, the first electrode includes at least one first branch, and the resistance value of the first branch is positively correlated with the deformation amount of the touch panel.

In the electronic device of the present application, the second electrode includes at least one second branch, and the resistance value of the second branch is positively related to the deformation amount of the touch panel.

In the electronic device of the present application, the second branch and/or the first branch are conductive loops formed by hollow wires, and are arranged in a staggered spiral shape.

In the electronic device of the present application, the orthographic projections of the first branch and the second branch on the surface of the touch panel do not overlap.

In the electronic device of the present application, the touch layer includes at least two electrode units distributed in an array;

In the electronic device of the present application, the electrode unit further includes at least:

A first touch lead electrically connected to the first electrode;

A second touch lead electrically connected to the second electrode;

In the electronic device of the present application, the first electrode, the second electrode, the first touch lead and the second touch lead are arranged in the same layer.

In the electronic device of the present application, the first electrode is one of the sensing electrode and the driving electrode, and the second electrode is the other one that is different from the first electrode.

In the electronic device of the present application, the first electrode and the second electrode are transparent metals.

Beneficial effect

This application obtains the deformation amount of the touch panel through the change amount of the resistance value of the first electrode, thereby realizing the pressure sensing function; the second electrode and the first electrode form a capacitance structure, which can determine the user's touch operation based on the capacitance change and realize the touch at the same time Touch control and pressure touch control solve the technical problem of the existing terminal that needs to add a pressure sensing layer to realize the pressure sensing function; at the same time, the setting of the touch leads does not occupy the distance of the border, and a narrow border design is realized.

BRIEF DESCRIPTION

In order to more clearly explain the embodiments or the technical solutions in the prior art, the following will briefly introduce the drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only inventions. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without paying any creative labor.

FIG. 1 is a structural diagram of a touch layer of this application;

FIG. 2 is a structural diagram of an electrode unit in a touch panel of the present application.

Embodiments of the invention

The descriptions of the following embodiments refer to additional drawings to illustrate specific embodiments that can be used to implement the present invention. Directional terms mentioned in the present invention, such as [upper], [lower], [front], [back], [left], [right], [inner], [outer], [side], etc., are for reference only Attach the direction of the schema. Therefore, the directional terminology is used to illustrate and understand the present invention, not to limit the present invention. In the figure, units with similar structures are indicated by the same reference numerals.

Please refer to FIG. 1, which is a structural diagram of a touch layer of the present application.

The touch panel includes:

A substrate (not shown), which may be conductive glass.

A touch layer 100 on the substrate. The touch layer 100 includes a plurality of electrode units 10. The number of the electrode units 10 may be two or more, and the specific number is not limited in this application.

In one embodiment, two adjacent electrode units 10 are insulated.

In one embodiment, the electrode units 10 are distributed in an array on the touch layer 100.

Please refer to FIG. 1. In this application, 3X3 electrode units 10 arranged in an array are used for description.

The touch control layer 100 includes nine electrode units 10 distributed in an array.

In one embodiment, in the first direction, the orthographic projection areas of the electrode unit 10 on the surface of the touch panel are equal.

In one embodiment, in the second direction, the orthographic projection area of the electrode unit 10 on the surface of the touch panel gradually decreases or increases. In this embodiment, in the direction from the electrode unit 10 to the touch chip 30, the orthographic projection area of the electrode unit 10 on the surface of the touch panel gradually decreases.

In one embodiment, the first direction is a horizontal direction, and the second direction is a vertical direction.

The touch layer 100 further includes touch leads 20.

In one embodiment, the touch lead 20 is electrically connected to the electrode unit 10. The electrode unit 10 is electrically connected to the touch chip 30 through the touch lead 20 to perform signal transmission.

In one embodiment, one of the touch leads 20 is electrically connected to one of the electrode units 10.

The touch lead of the present application can be directly arranged under the electrode unit, does not occupy the distance of the frame, and realizes a narrow frame design.

Please refer to FIG. 2, which is a structural diagram of the electrode unit 10 in the touch panel of the present application.

The electrode unit 10 includes:

The first electrode 101 is located on the substrate.

The second electrode 102 on the substrate.

In one embodiment, the first electrode 101 and the second electrode 102 are insulated.

In one embodiment, the first electrode 101 and the second electrode 102 form a capacitive structure. The present application may determine the user's touch operation based on the change in capacitance of the capacitance structure formed by the first electrode 101 and the second electrode 102.

In an embodiment, the resistance value of the first electrode 101 or/and the second electrode 102 is related to the deformation amount of the touch panel.

In an embodiment, the correlation relationship includes a positive correlation and a negative correlation, and a positive correlation means that the greater the deformation amount of the touch panel, the greater the resistance of the first electrode 101 or/and the second electrode 102 . Negative correlation means that the larger the deformation amount of the touch panel, the smaller the resistance of the first electrode 101 or/and the second electrode 102, and both of these correlations can realize the pressure sensing function.

Referring to FIG. 2, the value of the first electrode 101 including at least one first branch 1010 is positively correlated with the deformation amount of the touch panel.

In an embodiment, the first branch 1010 may be a conductive loop formed by a hollow wire.

In one embodiment, the first branch 1010 is convoluted.

The second electrode 102 further includes at least one second branch 1020 whose resistance value is positively correlated with the deformation amount of the touch panel.

In an embodiment, the second branch 1020 may be a conductive loop formed by a central control wire or a solid wire. In this embodiment, the second branch 1020 is a solid wire.

In one embodiment, the second branch 1020 is convoluted.

In one embodiment, the first branch 1010 and the second branch 1020 are arranged in a spiral shape.

In an embodiment, the first branch 1010 and the second branch 1020 may be a straight line, an arc, or a combination of multiple shapes.

In one embodiment, the orthographic projections of the first branch 1010 and the second branch 1020 on the surface of the touch panel do not overlap.

2, the touch lead 20 connected to the electrode unit 10 includes two of the first touch lead 201, the second touch lead 202, the first touch lead 201 and the first electrode 101. The two first branches 1010 are electrically connected, and the second touch lead 202 is electrically connected to the second branch 1020 in the second electrode 102.

In one embodiment, the first touch lead 201 and the second touch lead 202 of each electrode unit 10 are insulated and arranged in parallel.

In one embodiment, the first electrode 101, the second electrode 102, the first touch lead 201 and the second touch lead 202 are arranged in the same layer.

Based on Figure 2, this application also includes:

The first electrode 101 and the second electrode 102 are located in different layers. An insulating layer is provided between the first electrode 101 and the second electrode 102. This solution is not specifically expanded in the description.

The first electrode 101 is one of a sensing electrode and a driving electrode, and the second electrode 102 is another one that is different from the first electrode 101.

In one embodiment, the first electrode 101 and the second electrode 102 are transparent metals.

The present application will be further described in conjunction with specific application scenarios.

Referring to FIGS. 1 and 2, the touch layer 100 has a metal layer patterned to form electrode units 10 distributed in an array. Each electrode unit 10 includes a first electrode 101 and a second electrode 102. The first electrode 101 is a sensing electrode, and the second electrode 102 is a driving electrode.

The driving electrode and the sensing electrode are intertwined to form a spiral shape. The driving electrode and the sensing electrode are separated by an insulating layer, which is a touch signal signal for accurately identifying the pressure of the finger.

A capacitance is formed between the driving electrode and the sensing electrode to realize the touch function. When being sensed by the outside world, a capacitance is formed between the driving electrode and the sensing electrode. When the finger approaches, the capacitance value changes, and the finger position can be accurately detected according to the capacitance change

Each of the sensing electrodes has a hollow design so as to form a conductive loop. When an external finger pressure is applied, the sensing electrode has a strain effect and its impedance changes, and the amount of finger pressure is detected according to the impedance change.

The working principle of the pressure sensing function in this embodiment is:

When the finger touches the screen, the mutual capacitive touch function part feedbacks the position of the coordinate point, and the pressure-sensitive touch function part feedbacks the magnitude of the pressure. Combining the feedback signals of the two can detect the coordinate and pressure signal of the touched point.

When the finger presses the screen, the impedance of the electrode unit changes, the pressure sensing function is activated, the mutual-capacitive touch enters the sleep state, and the magnitude of the pressure can be determined in conjunction with the amount of change in the sensing electrode impedance.

According to yet another aspect of the present invention, there is also provided an electronic device, the electronic device includes the touch panel; the electronic device includes but is not limited to a mobile phone, a tablet computer, a computer monitor, a game console, a television, Display screens, wearable devices, and other household appliances or household appliances with display functions.

The working principle of the electronic device is similar to the working principle of the touch panel. For details, reference may be made to the working principle of the touch substrate, which is not repeated here.

The invention provides a touch panel and an electronic device. The touch panel includes a substrate and a touch layer; the touch layer includes an electrode unit, including a first electrode and a second electrode; the first electrode or/ There is a correlation between the resistance value of the second electrode and the deformation amount of the touch panel. This application obtains the deformation amount of the touch panel through the change amount of the resistance value of the first electrode, thereby realizing the pressure sensing function; the second electrode and the first electrode form a capacitance structure, which can determine the user's touch operation based on the capacitance change and realize the touch at the same time Touch control and pressure touch control solve the technical problem of the existing terminal that needs to add a pressure sensing layer to realize the pressure sensing function; at the same time, the setting of the touch leads does not occupy the distance of the border, and a narrow border design is realized.

In summary, although the present invention has been disclosed as above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various changes without departing from the spirit and scope of the present invention. Such changes and retouching, therefore, the protection scope of the present invention is subject to the scope defined by the claims.

Claims

A touch panel, including:

Substrate

A touch layer on the substrate, the touch layer includes at least two electrode units, and two adjacent electrode units are insulated and arranged,

The electrode unit includes:

A first electrode located on the substrate;

A second electrode located on the substrate, the first electrode is insulated from the second electrode;

The resistance value of the first electrode and/or the second electrode is related to the deformation amount of the touch panel.
The touch panel according to claim 1, wherein the first electrode includes at least one first branch, and the resistance value of the first branch is positively correlated with the deformation amount of the touch panel.
The touch panel according to claim 2, wherein the second electrode includes at least one second branch, and the resistance value of the second branch is positively related to the deformation amount of the touch panel.
The touch panel according to claim 3, wherein the second branch and/or the first branch are conductive loops formed by hollow wires, and are arranged in a staggered spiral shape.
The touch panel of claim 3, wherein the orthographic projections of the first branch and the second branch on the surface of the touch panel do not overlap.
The touch panel according to claim 1, wherein the touch layer comprises at least two electrode units distributed in an array;

In the first direction, the orthographic projection areas of the electrode unit on the surface of the touch panel are equal;

In the second direction, the orthographic projection area of the electrode unit on the surface of the touch panel gradually decreases or increases.
The touch panel according to claim 1, wherein the electrode unit further comprises at least:

A first touch lead electrically connected to the first electrode;

A second touch lead electrically connected to the second electrode;

The first touch lead and the second touch lead of each electrode unit are insulated and arranged in parallel.
The touch panel according to claim 7, wherein the first electrode, the second electrode, the first touch lead and the second touch lead are arranged in the same layer.
The touch panel according to claim 1, wherein the first electrode is one of a sensing electrode and a driving electrode, and the second electrode is another one different from the first electrode.
The touch panel according to claim 1, wherein the first electrode and the second electrode are transparent metals.
An electronic device, wherein the electronic device includes a touch panel, and the touch panel includes:

Substrate

A touch layer on the substrate, the touch layer includes at least two electrode units, and two adjacent electrode units are insulated and arranged,

The electrode unit includes:

A first electrode located on the substrate;

A second electrode located on the substrate, the first electrode is insulated from the second electrode;

The resistance value of the first electrode and/or the second electrode is related to the deformation amount of the touch panel.
The electronic device according to claim 11, wherein the first electrode includes at least one first branch, and the resistance value of the first branch is positively related to the deformation amount of the touch panel.
The electronic device according to claim 12, wherein the second electrode includes at least one second branch, and the resistance value of the second branch is positively related to the deformation amount of the touch panel.
The electronic device according to claim 13, wherein the second branch and/or the first branch are conductive loops formed by hollow wires, and are arranged in a staggered spiral shape.
The electronic device according to claim 13, wherein the orthographic projections of the first branch and the second branch on the surface of the touch panel do not overlap.
The electronic device according to claim 11, wherein the touch layer comprises at least two electrode units distributed in an array;

In the first direction, the orthographic projection areas of the electrode unit on the surface of the touch panel are equal;

In the second direction, the orthographic projection area of the electrode unit on the surface of the touch panel gradually decreases or increases.
The electronic device according to claim 11, wherein the electrode unit further comprises at least:

A first touch lead electrically connected to the first electrode;

A second touch lead electrically connected to the second electrode;

The first touch lead and the second touch lead of each electrode unit are insulated and arranged in parallel.
The electronic device according to claim 17, wherein the first electrode, the second electrode, the first touch lead and the second touch lead are provided in the same layer.
The electronic device according to claim 11, wherein the first electrode is one of a sensing electrode and a driving electrode, and the second electrode is another one different from the first electrode.
The electronic device according to claim 11, wherein the first electrode and the second electrode are transparent metals.