WO2016183946A1

WO2016183946A1 - Display panel, electronic device and touch control sensing method applied to electronic device

Info

Publication number: WO2016183946A1
Application number: PCT/CN2015/086395
Authority: WO
Inventors: 闫伟; 卢松强
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-05-18
Filing date: 2015-08-07
Publication date: 2016-11-24
Also published as: CN106293170A

Abstract

A display panel, electronic device and touch control sensing method applied to the electronic device. The display panel comprises from top to bottom: a glass substrate (B6), a touch control unit (B7) and a display unit (B8) disposed oppositely, and further comprises a pressure sensing unit disposed so as to monitor pressure applied to the display panel in a direction perpendicular to the glass substrate (B6) and obtain a pressure sensing signal, wherein the pressure sensing unit is parallel to the glass substrate (B6), and the pressure sensing unit is disposed between the glass substrate (B6) and the display unit (B8), or is disposed below the display unit (B8).

Description

Display panel, electronic device and touch sensing method applied to electronic device

Technical field

The present invention relates to the field of mobile device technologies, and in particular, to a display panel, an electronic device, and a touch sensing method applied to the electronic device.

Background technique

At present, the screens of electronic devices such as smart phones are getting bigger and bigger. When the mobile phone is loaded into the pocket and placed on a table or a sofa, the screen of the mobile phone is easily squeezed, and the light is only the top protection glass damage does not affect the touch. Function, but in severe cases, the touch screen and display screen are crushed, and these are unknowingly damaging the screen of the mobile phone, while the screen of the brand mobile phone, especially the high-end mobile phone, is hundreds of people, which makes people regret it. .

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a display panel, an electronic device, and a touch sensing method applied to the electronic device, which can issue an alarm message in advance when the display panel is subjected to excessive pressure, and notify the user that the display panel is The danger of being crushed, thus avoiding damage to electronic equipment.

In order to solve the above technical problem, the embodiment of the present invention adopts the following technical solutions:

According to an aspect of the embodiments of the present invention, a display panel includes: a glass substrate disposed oppositely from top to bottom, a touch unit, and a display unit, wherein the display panel further includes a display panel configured to monitor the display panel a pressure sensing unit that receives a pressure sensing signal in a direction perpendicular to the direction of the glass substrate, and the pressure sensing unit is parallel to the glass substrate and disposed between the glass substrate and the display unit. Or disposed below the display unit.

Wherein the pressure sensing unit comprises at least one first plate and at least one second plate, the first plate and the second plate are parallel and oppositely disposed, and the first plate and the first plate There is a predetermined separation distance between the second plates.

Wherein the plurality of the first plates are arranged in an array form.

The pressure sensing unit further includes a fixing film, the fixing film includes a first film structure and a second film structure that are parallel to each other, and the first plate is disposed on the first film structure. The second plate is disposed on the second film structure.

The first plate, the second plate and the fixed film between the glass substrate and the display unit are transparent.

Wherein, the first film structure and the second film structure are silicon-based films having a uniform thickness.

Wherein, the edges of the first film structure and the second film structure are provided with a frame for supporting each other.

The pressure sensing unit is fixedly connected between the glass substrate and the display unit in a bonding manner, or is fixedly connected under the display unit in a bonding manner.

According to another aspect of the embodiments of the present invention, an electronic device includes the display panel described above, and the electronic device further includes: a voltage sensing unit, a touch unit, and a display unit of the display panel The connected control circuit is configured to receive the pressure sensing signal of the pressure sensing unit, determine whether the pressure sensing signal exceeds a predetermined threshold, and issue an early warning response when it is determined that the pressure sensing signal exceeds a predetermined threshold.

According to another aspect of the present invention, a touch sensing method for the electronic device is provided. The touch sensing method includes: the touch unit is configured to be disposed on a glass substrate. The touch operation generates a touch sensing signal according to the position of the touch operation; the pressure sensing unit simultaneously monitors a touch operation set on the glass substrate, and generates a pressure sensing signal according to the touch operation; The control circuit determines whether the pressure of the touch operation is greater than a preset threshold according to the pressure sensing signal; when it is determined that the pressure sensing signal exceeds a predetermined threshold, the control circuit issues an early warning response; when determining that the pressure sensing signal is not When the predetermined threshold is exceeded, the control circuit calculates a touch position of the touch operation according to the touch sensing signal, and determines an operation command of the touch operation according to the touch position.

The touch sensing method further includes: the control circuit controls the display unit to display the warning information, and interrupts the operation of the touch unit, when the pressure sensing signal exceeds a predetermined threshold.

The beneficial effects of the embodiments of the present invention are:

In the display panel of the embodiment of the invention, a pressure sensing unit is disposed between the glass substrate and the touch unit, or between the touch unit and the display unit, or below the display unit. Therefore, when the glass substrate is subjected to excessive pressure from the outside, the pressure sensing unit obtains a pressure perpendicular to the direction of the glass substrate through the transfer of the glass substrate, and generates a pressure sensing signal. When the pressure sensing signal is greater than a predetermined threshold, the control circuit of the electronic device may issue an early warning response to notify the user in advance that the display panel is currently in danger of being crushed.

DRAWINGS

1 is a schematic structural view of a display panel according to an embodiment of the present invention;

2 is a schematic diagram showing the principle of applying a display panel to an electronic device according to an embodiment of the present invention;

FIG. 3 is a schematic flow chart of a touch sensing method applied to an electronic device according to an embodiment of the invention.

In the figure: B1, first plate; B2, second plate; B3, analog-to-digital conversion circuit; B4, central processor; B5, audio unit; B6, glass substrate; B7, touch unit; B8, display Unit; B9, signal output circuit.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

Embodiment 1

According to an aspect of the present invention, a display panel is provided. As shown in FIG. 1 , the display panel includes: a glass substrate B6 disposed oppositely from top to bottom, a touch unit B7, and a display unit B8, wherein The panel further includes a pressure sensing unit configured to monitor the pressure of the display panel in a direction perpendicular to the glass substrate B6 to obtain a pressure sensing signal, and the pressure sensing unit is parallel to the glass substrate B6 and disposed on the glass substrate B6 and the display unit B8. Or, it is disposed below the display unit B8.

The display panel of the embodiment of the invention is between the glass substrate B6 and the touch unit B7, or touch A pressure sensing unit is disposed between the unit B7 and the display unit B8 or below the display unit B8. When the glass substrate B6 is subjected to a pressure from the outside, the glass substrate B6 is transmitted to the pressure sensing unit, and the pressure sensing unit acquires the pressure in the direction perpendicular to the glass substrate B6 and generates a pressure sensing signal. When the pressure sensing signal exceeds a predetermined threshold, an early warning response can be issued by the control circuit of the electronic device to prevent the display panel from being damaged due to excessive pressure.

In another embodiment of the present invention, as shown in FIG. 1, the pressure sensing unit includes at least one first plate B1 and at least one second plate B2. The first plate B1 is parallel and opposite to the second plate B2. It is disposed, and the first plate B1 and the second plate B2 have a predetermined separation distance.

Therefore, in the display panel of the embodiment of the invention, the pressure sensing unit can adopt a capacitive pressure sensor. Because the capacitive pressure sensor can obtain the variable capacitance through the change of the gap, according to the capacitance correlation formula C=εS/d. Where ε is the dielectric constant of the interplate dielectric, S is the plate area, and d is the distance between the plates. Therefore, by measuring the varying capacitance, the variation parameter of the distance between the corresponding plates can be obtained, so that the pressure that causes the capacitance pressure sensor to change the distance between the plates can be further determined.

In another embodiment of the present invention, the pressure sensing unit further includes a fixing film including a first film structure and a second film structure that are parallel to each other, and the first plate B1 is disposed on the first film structure. The second plate B2 is disposed on the second film structure.

Since the thickness of the display panel is limited, the space for arranging the pressure sensing unit between the glass substrate B6, the touch unit B7, and the display unit B8 is limited, so the thickness of the pressure sensing unit also has certain limitations. From this, it is understood that the above limitations can be overcome by providing the first plate B1 and the second plate B2 of the pressure sensing unit on the fixed film.

In addition, the first plate B1, the second plate B2, and the fixed film may be disposed between the glass substrate B6 and the touch unit B7, or between the touch unit B7 and the display unit B8, that is, above the display unit B8. Therefore, in order not to affect the normal display function of the display panel, it is necessary to set the first plate B1, the second plate B2, and the fixed film between the glass substrate B6 and the display unit B8 to be transparent.

In another embodiment of the invention, the first film structure and the second film structure are both silicon-based films of uniform thickness. Specifically, a uniform and flat silicon-based film having a thickness of 10 μm can be obtained by a silicon-glass bonding process in combination with a concentrated potassium hydroxide solution ultrasonic etching and chemical mechanical polishing.

In addition, when the first film structure and the second film structure are both silicon-based films having a uniform thickness, the first plate B1 and the second plate B2 are respectively etched on the two silicon-based films parallel to each other. The deformation of the silicon film in the groove is used to induce a change in external pressure, and the deformation of the film is converted into an electrical signal output.

In another embodiment of the present invention, the edges of the first film structure and the second film structure are respectively provided with a frame for supporting each other, and the first electrode B1 and the second film structure on the first film structure are ensured. The second electrodes B2 on the body have a predetermined separation distance therebetween.

In another embodiment of the present invention, the pressure sensing unit is fixedly connected between the glass substrate B6 and the display unit B8 in a bonding manner, or is fixedly connected under the display unit B8 in a bonding manner. Of course, it can be understood that the display panel of the embodiment of the present invention is not limited to the fixed connection manner of the pressure sensing unit.

In addition, the fixing manner between the glass substrate B6, the touch unit B7 and the display unit B8 is usually also fixedly connected by a bonding method, and generally includes a full bonding and a frame bonding. The so-called frame sticker is also called a word-fitting adhesive, that is, the touch unit B7 and the four sides of the display unit B8 are simply fixed by double-sided tape. The full bonding means that the glass substrate B6 and the touch unit B7 are completely adhered together in a seamless manner by using water glue or optical glue.

Wherein, the number of the pressure sensing units and the distribution form between the glass substrate B6 and the display unit B8 or the display unit B8 need to be determined according to actual debugging results, for example, in an array form.

Embodiment 2

According to another aspect of the embodiments of the present invention, an electronic device includes the above display panel, and the electronic device further includes: a control that is electrically connected to the pressure sensing unit of the display panel, the touch unit B7, and the display unit B8. The circuit is configured to receive the pressure sensing signal of the pressure sensing unit, determine whether the pressure sensing signal exceeds a predetermined threshold, and issue an early warning response when determining that the pressure sensing signal exceeds a predetermined threshold.

In addition, the control circuit includes: a signal output circuit B9, an analog-to-digital conversion circuit B3, a central processing unit B4, and an audio unit B5, wherein the touch unit B7 and the display unit B8 are electrically connected to the central processing unit B4, and the pressure sensing unit and the signal The output circuit B9 is electrically connected, the signal output circuit B9 is electrically connected to the analog-to-digital conversion circuit B3, and the analog-to-digital conversion circuit B3 and the audio unit B5 are electrically connected to the central processing unit B4. connection.

The signal output circuit B9 sends the pressure sensing signal of the pressure sensing unit to the analog-to-digital conversion circuit B3, and the analog-to-digital conversion circuit B3 converts the pressure sensing signal into a digital pressure signal, and sends the digital pressure signal to the central processing unit B4. The processor B4 determines whether the digital pressure signal exceeds a predetermined threshold. When the digital pressure signal exceeds a predetermined threshold, the central processing unit B4 controls the audio unit B5 to issue an early warning response, and the control display unit B8 displays the warning information.

Optionally, as shown in FIG. 2, when the user accidentally applies a relatively large force F to the glass substrate B6 when using the electronic device, the force is transmitted on the first film structure, causing the first plate. Deformation occurs at B1, causing a change in the capacitance of the pressure sensing unit, and is converted into a variation parameter of the distance between the first plate B1 and the second plate B2, and when the predetermined threshold is reached, the signal output circuit B9 and the modulus are passed. The conversion circuit B3 transmits the signal to the central processing unit B4 of the electronic device, and issues a command to the display unit B8 via the central processing unit B4, so that the display unit B8 displays the warning information that the screen is squeezed, and simultaneously issues a command to the audio unit B5. , so that the speaker sends an alarm signal. In addition, this kind of early warning mechanism runs when the mobile phone is not turned off, and will not be affected by the bright screen of the mobile phone or the screen being turned off. Of course, if the control circuit of the electronic device is set to a circuit that is still operating when the device is turned off, the effect of early warning can still be achieved when the glass substrate B6 is subjected to excessive pressure in the off state.

Embodiment 3

According to another aspect of the embodiments of the present invention, a touch sensing method applied to the electronic device is provided. As shown in FIG. 3, the touch sensing method includes:

Step S31, the touch unit B7 monitors the touch operation on the glass substrate B6, and generates a touch sensing signal according to the position of the touch operation;

Step S33, the pressure sensing unit also monitors the touch operation set on the glass substrate B6, and generates a pressure sensing signal according to the touch operation;

Step S35: The control circuit determines, according to the pressure sensing signal, whether the pressure of the touch operation is greater than a preset threshold;

Step S37: When it is determined that the pressure sensing signal exceeds a predetermined threshold, the control circuit issues an early warning response;

Step S39: When it is determined that the pressure sensing signal does not exceed the predetermined threshold, the control circuit calculates the touch position of the touch operation according to the touch sensing signal, and determines an operation command of the touch operation according to the touch position.

Wherein, when the control circuit determines that the pressure sensing signal exceeds a predetermined threshold, the control circuit can also be controlled The display unit B8 displays the warning information. In addition, in order to avoid erroneous operation, the operation of the touch unit B7 at this time can be interrupted by the control circuit.

In summary, the touch sensing method applied to the electronic device according to the embodiment of the present invention can generate an early warning response when the force of the touch operation exceeds a predetermined threshold, and prompt the user to terminate the touch operation on the electronic device in time to protect the electronic device. The equipment is protected from damage.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and refinements without departing from the principles of the present invention. These improvements and refinements are also within the scope of the present invention. Inside.

Industrial applicability

As described above, according to the above embodiment and the preferred embodiment, when the glass substrate is subjected to excessive pressure from the outside, the pressure sensing unit obtains a pressure perpendicular to the direction of the glass substrate by the transfer of the glass substrate, and generates a pressure sensing signal. When the pressure sensing signal is greater than a predetermined threshold, the control circuit of the electronic device may issue an early warning response to notify the user in advance that the display panel is currently in danger of being crushed.

Claims

A display panel includes: a glass substrate disposed oppositely from top to bottom, a touch unit, and a display unit, wherein the display panel further includes a device configured to monitor the direction of the display panel to be perpendicular to the glass substrate Pressure, a pressure sensing unit that obtains a pressure sensing signal, and the pressure sensing unit is parallel to the glass substrate and disposed between the glass substrate and the display unit or disposed below the display unit.
The display panel of claim 1 , wherein the pressure sensing unit comprises at least one first plate and at least one second plate, the first plate being parallel and opposite to the second plate, And the first plate and the second plate have a predetermined separation distance.
The display panel of claim 2, wherein the plurality of the first plates are arranged in an array form.
The display panel according to claim 2, wherein the pressure sensing unit further comprises a fixing film, the fixing film comprising a first film structure and a second film structure which are parallel to each other, and the first plate is disposed The second electrode plate is disposed on the second film structure on the first film structure.
The display panel according to claim 4, wherein the first plate, the second plate, and the fixing film between the glass substrate and the display unit are both transparent.
The display panel according to claim 4, wherein the first film structure and the second film structure are each a silicon-based film having a uniform thickness.
The display panel according to claim 4, wherein the edges of the first film structure and the second film structure are provided with frames for supporting each other.
The display panel according to claim 1, wherein the pressure sensing unit is fixedly connected between the glass substrate and the display unit in a bonding manner, or is fixedly connected under the display unit in a bonding manner. .
An electronic device comprising the display panel according to any one of claims 1 to 8, wherein the electronic device further comprises: a control circuit electrically connected to the pressure sensing unit, the touch unit and the display unit of the display panel And determining to receive the pressure sensing signal of the pressure sensing unit, determining whether the pressure sensing signal exceeds a predetermined threshold, and when determining that the pressure sensing signal exceeds a predetermined threshold, sending An early warning response.
A touch sensing method for an electronic device according to claim 9, wherein the touch sensing method comprises:

The touch unit monitors a touch operation on the glass substrate, and generates a touch sensing signal according to the position of the touch operation;

The pressure sensing unit simultaneously monitors a touch operation on the glass substrate, and generates a pressure sensing signal according to the touch operation;

The control circuit determines, according to the pressure sensing signal, whether the pressure of the touch operation is greater than a preset threshold;

The control circuit issues an early warning response when it is determined that the pressure sensing signal exceeds a predetermined threshold;

When it is determined that the pressure sensing signal does not exceed a predetermined threshold, the control circuit calculates a touch position of the touch operation according to the touch sensing signal, and determines an operation of the touch operation according to the touch position. command.
The touch sensing method of claim 10, wherein when the pressure sensing signal exceeds a predetermined threshold, the touch sensing method further comprises:

The control circuit controls the display unit to display the warning information and interrupt the operation of the touch unit.