WO2023236017A1

WO2023236017A1 - Display assembly and terminal device

Info

Publication number: WO2023236017A1
Application number: PCT/CN2022/097223
Authority: WO
Inventors: 周顺
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2023-12-14
Also published as: CN117529703A

Abstract

A display assembly (10) and a terminal device. The display assembly (10) comprises: a display screen (15); a middle frame assembly (11) for mounting the display screen (15); a heat dissipation assembly (12) provided between the display screen (15) and the middle frame assembly (11); and at least two pressure sensing assemblies (13) located between the display screen (15) and the middle frame assembly (11), fixedly provided on the middle frame assembly (11), and used for sensing a pressing force borne by the display screen (15), wherein sensing areas of the at least two pressure sensing assemblies (13) cover a touch area of the display screen (15).

Description

Display components and terminal equipment

Technical field

The present disclosure relates to the field of terminal technology, and in particular, to a display component and a terminal device.

Background technique

With the continuous advancement of terminal technology, the requirements for the screen-to-body ratio of terminal equipment are getting higher and higher; in the design process of terminal equipment, in order to further improve the screen-to-body ratio of terminal equipment, some physical buttons on the terminal equipment (such as Home button) and physical detection areas (such as fingerprint detection areas), use under-screen pressure sensing to detect the press operation input by the user, thereby realizing specific functions.

In related technologies, a full-surface pressure-sensitive pressure-sensitive component is usually provided under the display screen of a terminal device to realize pressure-sensitive detection of the entire display area of the terminal device. However, due to its large area, this pressure-sensitive component requires a large space. The large space results in poor design flexibility of the terminal equipment and low board space utilization, and is not conducive to the location layout of the heat dissipation components within the display component, resulting in increased thickness of the display component and poor user experience.

Contents of the invention

Embodiments of the present disclosure provide a display component and a terminal device.

A first aspect of an embodiment of the present disclosure provides a display component, wherein the display component includes:

display screen;

A middle frame assembly for installing the display screen;

A heat dissipation component disposed between the display screen and the middle frame component;

At least two pressure-sensitive components are located between the display screen and the middle frame component and are fixedly provided on the middle frame component for sensing the pressing force on the display screen; wherein the at least The sensing areas of the two pressure-sensitive components cover the touch area of the display screen.

In the above solution, the display components include:

A reinforcing component disposed between the display screen and the pressure-sensitive component;

The reinforcing component is formed with at least one strain cavity; wherein the at least one strain cavity forms a deformation space for the display screen to deform.

In the above solution, the reinforcing components include:

A reinforcing plate, with at least one strain cavity recessed toward the first surface of the display screen;

A connection layer is provided between the display screen and the reinforcing plate, and is used to connect the display screen and the reinforcing plate.

In the above solution, a plurality of the strain cavities are distributed in an array on the first surface of the reinforcing plate.

In the above solution, the depression depths of the plurality of strain chambers in the same row are the same; the depression depths of the strain chambers in any two adjacent rows are different.

In the above solution, the pressure-sensitive component includes:

The first pressure-sensitive layer includes: N first pressure-sensitive resistors;

A second pressure-sensitive layer is stacked with the first pressure-sensitive layer. The second pressure-sensitive layer includes: N second pressure-sensitive resistors, where N is an integer greater than or equal to 2;

The N first varistors of the first pressure-sensitive layer are electrically connected to the N second varistors of the second pressure-sensitive layer to form a bridge circuit; wherein, the bridge circuit Used to detect the resistance change of the first varistor and/or the second varistor caused by the pressure deformation of the display screen, based on the first varistor and/or the second varistor. The resistance value of the varistor changes and a pressure-sensitive signal is output.

In the above solution, N first varistors are dispersedly provided on the first pressure-sensitive layer; and/or N second varistors are dispersedly provided on the second pressure-sensitive layer.

In the above solution, the projection of the first varistor on the first pressure-sensitive layer and the projection of the second varistor on the first pressure-sensitive layer do not overlap with each other.

In the above solution, N first varistors are arranged on the first pressure-sensitive layer along the first direction;

N second piezoresistors are arranged on the second pressure-sensitive layer along a second direction; the second direction is different from the first direction.

In the above solution, there is an included angle between the first direction and the second direction.

In the above solution, the pressure-sensitive component includes:

A flexible circuit board is stacked with the first pressure-sensitive layer and the second pressure-sensitive layer, and the flexible circuit board is located on the side of the second pressure-sensitive layer away from the first pressure-sensitive layer;

Wherein, the flexible circuit board is electrically connected to the output end of the bridge circuit, and is electrically connected to the main board through a connector for transmitting the pressure-sensitive signal output by the bridge circuit to the main board.

In the above solution, the heat dissipation component is provided with a cut-off groove, and the cut-off groove is used to provide a deformation space for the display screen.

In the above solution, the middle frame assembly is provided with an accommodating groove, and at least part of the accommodating groove penetrates the middle frame assembly in a direction perpendicular to the surface of the middle frame assembly;

At least part of the heat dissipation component is installed in the receiving groove.

In the above solution, the display components include:

The first pressure-sensitive component;

a second pressure-sensitive component spaced apart from the first pressure-sensitive component;

The heat dissipation component is located between the first pressure-sensitive component and the second pressure-sensitive component.

In the above solution, the first pressure-sensitive component and the second pressure-sensitive component are parallel, and the distance between the second pressure-sensitive component and the first pressure-sensitive component is less than or equal to 60 mm.

A second aspect of the embodiments of the present disclosure provides a terminal device, wherein the terminal device includes: the display component provided in the first aspect.

In embodiments of the present disclosure, at least two pressure-sensitive components are disposed between the display screen and the middle frame component, and the sensing areas of the at least two pressure-sensitive components cover the touch control area of the display screen, thereby achieving control of the display screen. Pressure-sensitive detection at any position within the entire touch area of the screen; reducing the pressure-sensitive cost of the display component; and, compared to the full-surface pressure-sensitive pressure-sensitive component, by arranging at least two pressure-sensitive components on the middle frame component, On the one hand, it can effectively reduce the space occupied by pressure-sensitive components in the display component, improving the layout space utilization and design flexibility of the display component; on the other hand, it can also provide more space for the installation of heat dissipation components, which is beneficial to the display The location and layout of the heat dissipation components within the component improves the user experience. It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the embodiments of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the embodiments of the invention.

Figure 1 is a schematic structural diagram of a display component according to an exemplary embodiment;

Figure 2 is a schematic longitudinal cross-sectional view of a display assembly according to an exemplary embodiment;

Figure 3 is a schematic second longitudinal cross-section of a display assembly according to an exemplary embodiment;

Figure 4 is a schematic structural diagram of a pressure-sensitive component according to an exemplary embodiment;

Figure 5 is a schematic structural diagram 2 of a display component according to an exemplary embodiment;

Figure 6 is a block diagram of a terminal device according to an exemplary embodiment.

In the above figures: 10, display component; 11, middle frame component; 12, heat dissipation component; 13, pressure sensing component; 14, reinforcing component; 15, display screen; 11a, accommodating groove; 121, truncation groove; 131 , first pressure-sensitive layer; 132, second pressure-sensitive layer; 133, flexible circuit board; 141, reinforcement board; 142, connection layer; 131a, first varistor; 132a, second varistor; 141a, strain chamber;

20, terminal equipment; 21, processing component; 22, memory; 23, power supply component; 24, multimedia component; 25, audio component; 26, input/output interface; 27, sensor component; 28, communication component; 211, processor .

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with embodiments of the invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of embodiments of the invention.

The terminology used in the embodiments of the present disclosure is for the purpose of describing specific embodiments only and is not intended to limit the embodiments of the present disclosure. As used in this disclosure, the singular forms "a," "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be called second information, and similarly, the second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining."

In the related art, in order to achieve pressure-sensitive detection of the entire display area of the terminal device, a full-surface pressure-sensitive pressure-sensitive component is usually provided under the display screen of the terminal device, although the sensing area of this pressure-sensitive component can cover the entire display area. However, due to the large area of the pressure-sensitive component itself, the pressure-sensitive component can usually only be stacked on the middle frame, resulting in poor design flexibility of the terminal equipment and low utilization of layout space; and it is not conducive to the internal layout of the display component. The location and layout of the heat dissipation components results in an increase in the thickness of the display components and a poor user experience.

An embodiment of the present disclosure provides a display component, as shown in FIG. 1 . FIG. 1 is a schematic structural diagram of a display component according to an exemplary embodiment. The display component 10 includes:

display screen;

The middle frame assembly 11 is used for installing the display screen;

The heat dissipation component 12 is provided between the display screen and the middle frame component 11;

At least two pressure-sensitive components 13 are located between the display screen and the middle frame component 11 and are fixedly provided on the middle frame component 11 for sensing the pressing force on the display screen; wherein, The sensing areas of the at least two pressure-sensitive components 13 cover the touch area of the display screen.

It should be noted that the display screen is not shown in FIG. 1 .

In the embodiment of the present disclosure, the display component can be applied in any terminal device, and the display component is used to display images, sense the user's touch operation on the display component, and respond to the touch operation. to respond. The terminal device can be a smartphone, tablet, laptop, etc.

The display component includes: a display screen and a middle frame component, and the display screen is installed on the middle frame component.

The display screen includes: a display module and a cover;

The display module is used to display image information; the cover plate covers the display module and is used to protect the display module.

Here, the display screen can be a Liquid Crystal Display (LCD) touch display or an Organic Light-Emitting Diode (OLED) touch display; the cover can be made of glass material or transparent resin material production.

The middle frame assembly includes: a first surface and a second surface opposite to the first surface;

The first surface is used for mounting the display screen; the second surface is used for supporting circuit boards, batteries and other components.

The middle frame assembly further includes: a frame, the frame is provided around the first surface and the second surface.

Here, the frame can be used as a shell of the terminal device to protect components such as a display screen, a circuit board, and a battery.

The middle frame component may be made of metal materials such as magnesium alloy, aluminum alloy, or titanium alloy; or the middle frame component may be made of non-metallic materials such as ceramics and fiber composite panels. The material of the middle frame component can be set according to actual needs, and is not limited in the embodiment of the present disclosure.

The heat dissipation component is disposed between the middle frame component and the display screen; it can be used to dissipate heat of the display screen.

The heat dissipation component is fixedly connected to the middle frame component; specific fixing methods include but are not limited to the following: fixing the heat dissipation component to the middle frame component through bottom welding or bonding; through side welding or bonding Fix the heat dissipation component on the middle frame component by using the method of fixing the heat dissipation component on the middle frame component; or use the surrounding overlap structure to fix the heat dissipation component on the middle frame component.

The heat dissipation component may be a vapor chamber, a heat pipe, etc. The embodiments of the present disclosure do not limit the type of heat dissipation component.

It should be noted that when the display assembly is operating normally, since the heat dissipation assembly is disposed between the middle frame assembly and the display screen, the heat dissipation assembly can be used to absorb the heat generated by the display screen and transfer the heat to the entire middle frame assembly. The middle frame component conducts heat away; due to its large area and high heat dissipation efficiency, the middle frame component can effectively improve the heat dissipation performance of the display component.

In some embodiments, the heat dissipation component may be in a ring-shaped structure.

Here, a ring-shaped heat dissipation component can be used to maximize the heat dissipation efficiency of the display component.

The display component includes: at least two pressure-sensitive components;

An accommodation space is formed between the display screen and the middle frame assembly for accommodating the at least two pressure-sensitive components. Here, the Suso accommodation space can be closed or non-closed.

The pressure-sensitive component is used to sense the pressing force on the display screen.

The at least two pressure-sensitive components are fixedly disposed on the middle frame component, and the sensing areas of the at least two pressure-sensitive components cover the touch area of the display screen.

Since the sensing area of a single pressure-sensitive component is limited, in order to sense the pressing force at any position within the entire touch area of the display screen, the at least two pressure-sensitive components on the middle frame component can be adjusted. The position distribution is such that the sensing areas of the at least two pressure-sensitive components can cover the touch area of the display screen. The embodiments of the present disclosure do not limit the position distribution of the at least two pressure-sensitive components. As long as the sensing area of the at least two pressure-sensitive components can cover the touch area of the display screen, the position distribution belongs to the present disclosure. Protection scope of the embodiment.

It should be noted that, in order to realize the sensing of the pressing force at any position within the entire touch area of the display screen, the whole-surface pressure sensing method is usually adopted in the related art, that is, the area of the pressure sensing component covers all areas. the entire touch area of the display. On the one hand, due to the large area of the full-surface pressure-sensitive pressure-sensitive component, the layout space utilization of the display component is low, the design flexibility is poor, and the cost is high; and by setting the full-surface pressure-sensitive component in the display component The pressure-sensitive component is not conducive to the location layout of the heat dissipation component in the display component, resulting in a significant increase in the thickness of the display component.

In embodiments of the present disclosure, at least two pressure-sensitive components are disposed between the display screen and the middle frame component, and the sensing areas of the at least two pressure-sensitive components cover the touch control area of the display screen, thereby achieving control of the display screen. Pressure-sensitive detection at any position within the entire touch area of the screen; reducing the pressure-sensitive cost of the display component; and, compared to the full-surface pressure-sensitive pressure-sensitive component, by arranging at least two pressure-sensitive components on the middle frame component, On the one hand, it can effectively reduce the space occupied by pressure-sensitive components in the display component, improving the layout space utilization and design flexibility of the display component; on the other hand, it can also provide more space for the installation of heat dissipation components, which is beneficial to the display The location and layout of the heat dissipation components within the component improves the user experience.

In some embodiments, the display component includes: a heat dissipation protective layer;

The heat dissipation protective layer is disposed between the display screen and the middle frame assembly and adheres to the surface of the display screen;

The heat dissipation component in the accommodating groove is in contact with the heat dissipation protective layer and transfers heat to the heat dissipation protective layer.

Here, the heat dissipation protection layer can be a copper foil foam composite layer; the copper foil foam composite layer can be used to achieve buffering and reduce collisions with the display screen, and on the other hand, can achieve protection of the display assembly. heat dissipation.

In some embodiments, as shown in FIG. 2 , FIG. 2 is a schematic longitudinal cross-sectional view of a display assembly according to an exemplary embodiment. The display component 10 includes:

Reinforcement component 14 is provided between the display screen 15 and the pressure-sensitive component 13;;

The reinforcing component 14 is formed with at least one strain cavity 141a; wherein the at least one strain cavity 141a forms a deformation space for the display screen 15 to deform.

In the embodiment of the present disclosure, the display component includes: a reinforcing component;

The reinforcing component is disposed between the display screen and the pressure-sensitive component; the reinforcing component can be used to support the display screen to improve the bending strength of the display screen and reduce the user's pressure on the display The deformation and collapse caused by the screen are improved to improve the user experience.

At least one strain cavity is formed on the reinforcing component;

It can be understood that when the display screen is pressed, the display screen will deform. On the one hand, the reinforcing component can provide support for the display screen, improve the bending strength of the display screen, and reduce the bending strength of the display screen. collapse when pressed; on the other hand, a deformation space is formed between at least one strain cavity on the reinforcing component for the display screen to move strain.

In some embodiments, as shown in Figure 2, the reinforcing component 14 includes:

Reinforcement plate 141, with at least one strain chamber 141a recessed toward the first surface of the display screen;

The connection layer 142 is provided between the display screen 15 and the reinforcing plate 141 and is used to connect the display screen 15 and the reinforcing plate 141 .

In the embodiment of the present disclosure, the reinforcing component includes: a reinforcing plate and a connection layer;

The connection layer is disposed between the reinforcing plate and the display screen, and the reinforcing plate is adhered to the surface of the display screen facing the pressure-sensitive component through the connection layer.

Here, the reinforcing plate may be a metal structure; the connection layer may be double-sided tape.

In some embodiments, the connection layer may be low-temperature thermosetting adhesive.

It should be noted that compared to double-sided tape, low-temperature thermosetting adhesive has higher hardness; using low-temperature thermosetting adhesive can better improve the overall bending strength of the display screen and the reinforcing plate.

The reinforcing plate is etched toward the first surface of the display screen to form at least one strain cavity;

It can be understood that on the one hand, the reinforcing plate can provide support for the display screen, improve the bending strength of the display screen, and reduce the collapse of the display screen when it is pressed; on the other hand, when the display screen is deformed under pressure, A deformation space is formed between the plurality of strain cavities on the reinforcing plate for the display screen to move strain.

In some embodiments, as shown in FIG. 3 , the strain chamber 141a has a trapezoidal cross-section in a first direction; wherein the first direction is a direction perpendicular to the surface of the reinforcing component.

In some embodiments, a plurality of the strain cavities are distributed in an array on the first surface of the reinforcing plate.

In an embodiment of the present disclosure, a plurality of strain cavities are formed on the reinforcing plate, and the plurality of strain cavities are distributed in an array on the first surface of the reinforcing plate.

Here, the depression depths of the plurality of strain chambers may be the same or different; it should be noted that the depression depth is the distance between the bottom surface of the strain chambers and the first surface of the reinforcing plate.

It can be understood that by distributing a plurality of strain cavities in an array on the first surface of the reinforcing plate, the deformation space formed by each strain cavity is concentrated, thereby increasing the degree of deformation that the reinforcing plate can tolerate of the display screen. , the pressure-sensitive component in the display component can more accurately sense the pressure deformation of the display screen.

In some embodiments, the depression depths of multiple strain chambers in the same row are the same; the depression depths of the strain chambers in any two adjacent rows are different.

Here, the depth of the depression is the distance between the bottom surface of the strain cavity and the first surface of the reinforcing plate.

In an embodiment of the present disclosure, a plurality of strain cavities are distributed on the first surface of the reinforcing plate, and the plurality of strain cavities are distributed in an array. The depression depths of multiple strain chambers in the same row are the same, and the depression depths of the strain chambers in any two adjacent rows are different. That is, strain cavities with different recess depths are staggered within the array.

It can be understood that the depth of the depression of the strain cavity is related to the degree of deformation of the display screen that the reinforcing plate can tolerate; if the depth of the depression is too large, the reinforcing plate cannot effectively support the display screen, causing the display screen to appear. Serious deformation or even collapse. If the depth of the depression is too small, although the reinforcing plate can effectively support the display screen, the deformation caused by the pressure on the display screen will be small, and the pressure-sensitive component will not be able to accurately sense the pressure on the display screen.

Therefore, in the embodiment of the present disclosure, multiple strain cavities arranged in an array are provided on the reinforcing plate, and the strain cavities with different concave depths are staggeredly distributed in the array, so that the reinforcing plate can stably support the display screen. Provide greater deformation space for the display screen.

In some embodiments, as shown in Figures 2-3, Figure 3 is a second longitudinal cross-sectional view of a display assembly according to an exemplary embodiment. The pressure-sensitive component 13 includes:

The first pressure-sensitive layer 131 includes: N first piezoresistors 131a;

The second pressure-sensitive layer 132 is stacked with the first pressure-sensitive layer 131. The second pressure-sensitive layer 132 includes: N second pressure-sensitive resistors 132a, where N is an integer greater than or equal to 2;

The N first varistors 131a of the first pressure-sensitive layer 131 are electrically connected to the N second varistors 132a of the second pressure-sensitive layer 132 to form a bridge circuit; wherein, The bridge circuit is used to detect the resistance change of the first varistor 131a and/or the second varistor 132a caused by the pressure deformation of the display screen 15. Based on the first varistor The resistance value of 131a and/or the second varistor 132a changes, and a pressure-sensitive signal is output.

In an embodiment of the present disclosure, the pressure-sensitive component includes: a first pressure-sensitive layer and a second pressure-sensitive layer arranged in a stack;

Wherein, the first pressure-sensitive layer is provided with N first varistors, and the second pressure-sensitive layer is provided with N second varistors;

Here, N is an integer greater than or equal to 2. It can be understood that the N first varistors may be disposed at different positions of the first pressure-sensitive layer, and the N second varistors may be disposed at different positions of the second pressure-sensitive layer. Different positions, thereby expanding the sensing range of the pressure-sensitive component so as to sense the pressure in the entire touch area of the display screen.

The N first varistors of the first pressure-sensitive layer are electrically connected to the N second varistors of the second pressure-sensitive layer to form a bridge circuit;

It should be noted that a bridge circuit is a circuit structure formed by connecting multiple two-terminal components (such as resistors, inductors or capacitors) into a quadrilateral. Each side is called a bridge arm of the bridge circuit. One of the bridge arms is Connect the power supply device to the diagonal corner, and connect the other diagonal corner of the bridge arm to the output end of the bridge circuit. The bridge circuit can convert parameter changes of components such as resistance, inductance or capacitance on the bridge arm into voltage or current output.

Here, the first varistor and the second varistor are respectively disposed on each bridge arm of the bridge circuit; when the display screen is pressed and deformed, the third pressure-sensitive layer of the first pressure-sensitive layer The resistance of a varistor and/or the second varistor of the second pressure-sensitive layer will change accordingly, and the bridge circuit detects the first varistor and/or the second pressure-sensitive resistor. The change in resistance of the sensitive resistor outputs a pressure-sensitive signal in the form of voltage or current based on the change in resistance of the first varistor and/or the second varistor.

It can be understood that the pressure-sensitive signal output by the bridge circuit can at least be used to indicate the pressed position and the pressed intensity of the display screen.

Embodiments of the present disclosure provide a stacked first pressure-sensitive layer and a second pressure-sensitive layer in a pressure-sensitive component, and utilize N first pressure-sensitive resistors of the first pressure-sensitive layer and the second pressure-sensitive layer. The N second varistors are connected to form a bridge circuit, and the resistance changes of the first varistor and/or the second varistor are detected through the bridge circuit, and a pressure-sensitive signal is output to realize the display. Detection of component stress conditions.

In some embodiments, the N=4;

Two of the first varistor or two of the second varistor are arranged in series on any bridge arm of the bridge circuit.

In this embodiment of the disclosure, N=4, the first pressure-sensitive layer includes four first pressure-sensitive resistors, and the second pressure-sensitive layer includes four second pressure-sensitive resistors.

Wherein, two first varistors or two second varistors are arranged in series on any bridge arm of the bridge circuit.

Here, the resistance values of the four first varistors of the first pressure-sensitive layer are the same as the resistance values of the four second varistors of the second pressure-sensitive layer.

It should be noted that the resistance of the varistor is not only affected by the deformation of the varistor, but also by some other factors, which affects the accuracy of pressure sensing detection; for example, due to the thermal effect of the resistor, temperature Fluctuations will also affect the resistance of the varistor.

In the embodiment of the present disclosure, by using a bridge circuit connected by 4 first varistors and 4 second varistors, and by obtaining the voltage values of different bridge arms of the bridge circuit, the value of the different bridge arms is obtained. A pressure sensing signal and a compensation signal are determined based on the multiple differential voltages.

Here, the compensation signal is used to compensate the pressure-sensitive signal to eliminate the influence of other factors (such as temperature) on the pressure-sensitive signal and improve the accuracy of pressure-sensitive detection.

It should be noted that when a certain position of the display screen is pressed, the resistance value of the varistor (ie, the target varistor) containing the position in the sensing area will change, and the sensing area does not contain the varistor. The resistance value of the varistor at this position (i.e., the idle varistor) will not change; however, other factors (such as temperature) will affect all varistors in the display component, and the degree of influence is basically the same; it can be determined by Detect the change in resistance of the idle varistor to determine the impact of temperature on the resistance of the varistor; and compensate the resistance of the target varistor to eliminate the impact of temperature on the resistance of the target varistor, thereby reducing the temperature Impact on pressure sensing detection and improve the accuracy of pressure sensing detection.

In some embodiments, the first pressure-sensitive layer includes: 2 first varistors with a first resistance value and 2 first varistors with a second resistance value; the second pressure-sensitive layer includes: 4 a second varistor of first resistance.

In the embodiment of the present disclosure, the bridge circuit is composed of 2 first varistors with a first resistance value, 2 first varistors with a second resistance value, and 4 second varistors with a first resistance value. The sensitive resistor is electrically connected.

Here, the first varistor with the second resistance value is used to balance the bridge circuit. The second resistance value and the first resistance value can be set according to actual needs, and this is not limited in the embodiment of the present disclosure.

It should be noted that before using the bridge circuit for pressure sensing detection, the bridge circuit must first be in a balanced state, that is, the bridge circuit has no output. It can be understood that if the bridge circuit is in an unbalanced state, the initial output of the bridge circuit will generally not be zero, so that when pressure-sensitive components are used for pressure sensing detection, the output value of the bridge circuit will be inaccurate. Therefore, the pressure deformation of the display screen cannot be accurately sensed.

In some embodiments, as shown in FIG. 4 , FIG. 4 is a schematic structural diagram of a pressure-sensitive component according to an exemplary embodiment. N number of the first varistors 131a are dispersedly arranged on the first pressure-sensitive layer; and/or N number of the second varistors 132a are dispersedly arranged on the second pressure-sensitive layer.

In an embodiment of the present disclosure, in order to improve the sensing area of the first pressure-sensitive layer and/or the sensing area of the second pressure-sensitive layer of the pressure-sensitive component

By dispersing N first varistors on the first pressure-sensitive layer, and/or dispersing N second varistors on the second pressure-sensitive layer, the first pressure-sensitive resistor can be reduced. The overlap between the sensing areas of each first varistor of the pressure-sensitive layer and/or the sensing areas of each second varistor of the second pressure-sensitive layer, so that the area of the sensing area is not the same. In this case, the number of first varistors provided in the first pressure-sensitive layer and/or the number of second varistors provided in the second pressure-sensitive layer is reduced, thereby reducing the cost of the pressure-sensitive component.

In some embodiments, as shown in FIG. 4 , the projection of the first varistor 131a on the first pressure-sensitive layer is mutually exclusive with the projection of the second varistor 132a on the first pressure-sensitive layer. No overlap.

In this embodiment of the disclosure, N first varistors are dispersedly provided in the first pressure-sensitive layer, and N second varistors are dispersedly provided in the second pressure-sensitive layer.

It can be understood that the projections of the N first varistor on the first pressure-sensitive layer do not overlap with each other; the projections of the N second varistor on the second pressure-sensitive layer overlap with each other. No overlap.

The projection of any one of the first varistor on the first pressure-sensitive layer and the projection of any of the second varistor on the first pressure-sensitive layer do not overlap with each other.

In the embodiment of the present disclosure, by adjusting the positions of the first varistor and the second varistor, the N first varistor and the N second varistor are in the first pressure sensitive state. The projection areas on the layer do not overlap with each other, so that when a certain position in the sensing area of the pressure-sensitive component is pressed, the N first varistor and the N second varistor located at different positions will sense The measured deformation amount is different, thereby more accurately determining the pressure position; improving the detection sensitivity and output performance of the bridge circuit.

In some embodiments, as shown in Figure 4, N first varistors 131a are disposed on the first pressure-sensitive layer along the first direction;

N second piezoresistors 132a are disposed on the second pressure-sensitive layer along a second direction; the second direction is different from the first direction.

In the embodiment of the present disclosure, N first varistors are sequentially distributed along the first direction and disposed on the first pressure-sensitive layer; N second varistors are sequentially distributed along the second direction and disposed on the first pressure-sensitive layer. The second pressure-sensitive layer;

Here, the first direction and the second direction are different.

It can be understood that in this embodiment of the present disclosure, the N first pressure-sensitive resistors of the first pressure-sensitive layer are sequentially distributed along the first direction, and the N second pressure-sensitive resistors of the second pressure-sensitive layer are sequentially distributed along the second direction. When forming a bridge structure based on the first varistor and the second varistor, it can effectively reduce the complexity of the wire layout between the first varistor and/or the second varistor. degree, reducing the wiring cost of display components.

In some embodiments, as shown in Figure 4, there is an included angle between the first direction and the second direction.

In this embodiment of the present disclosure, there is an included angle between the first direction and the second direction, that is, N first varistors of the first pressure-sensitive layer and N number of first pressure-sensitive resistors of the second pressure-sensitive layer. The second varistors form a staggered distribution structure.

Here, the intersection point of the first direction and the second direction may be located at the center of the sensing area of the pressure-sensitive component, that is, the varistor corresponding to the center of the sensing area of the pressure-sensitive component is more densely distributed. .

It can be understood that compared with the peripheral position of the sensing area of the pressure-sensitive component, the central position can be a high-probability touch area, through the staggered distribution of the first varistor and the second varistor, so that When the central position in the sensing area of the pressure-sensitive component is pressed, the resistance values of the multiple first varistors and/or the second varistors can all sense different deformations, thereby more accurately determining the pressure. position to improve the detection sensitivity and output performance of the bridge circuit; on the other hand, when forming the bridge structure, it can effectively reduce the complexity of the wire layout between the first varistor and/or the second varistor. degree, reducing the wiring cost of display components.

In some embodiments, as shown in Figure 3, the pressure-sensitive component 13 includes:

The flexible circuit board 133 is stacked with the first pressure-sensitive layer 131 and the second pressure-sensitive layer 132, and the flexible circuit board 133 is located on the second pressure-sensitive layer 132 away from the first pressure-sensitive layer. one side of 131;

The flexible circuit board 133 is electrically connected to the output end of the bridge circuit, and is electrically connected to the main board through a connector, for transmitting the pressure-sensitive signal output by the bridge circuit to the main board.

In an embodiment of the present disclosure, the pressure-sensitive component includes: a flexible circuit board;

The first pressure-sensitive layer, the second pressure-sensitive layer and the flexible circuit board are stacked in sequence; it can be understood that the flexible circuit board is located on the second pressure-sensitive layer away from the first pressure-sensitive layer. side of the layer.

A detection circuit is provided in the flexible circuit board, and the detection circuit is connected to the output end of the bridge circuit; and the flexible circuit board is connected to the main board through a connector, and the flexible circuit board is used to detect through the detection circuit. The bridge circuit outputs a pressure-sensitive signal and transmits the detected pressure-sensitive signal to the main board.

Here, the connector may be a board-to-board connector.

It can be understood that when the display screen is deformed under pressure, the resistance of the first varistor and/or the second varistor on the bridge circuit changes, and the voltage output by the output end of the bridge circuit also changes. Change; the detection circuit detects the voltage change at the output end of the bridge circuit.

The detection circuit is connected to the processor on the mainboard, and the detection circuit transmits the detected voltage changes at the output end of the bridge circuit to the processor; the processor amplifies the voltage changes , to sense the pressure sensed by the pressure-sensitive component, and thereby realize the corresponding function of the pressure-sensitive component.

Here, if the display component is applied in a terminal device, the mainboard may be the mainboard of the terminal device, and the processor may be a central processing unit or a microprocessor of the terminal device.

In some embodiments, as shown in FIG. 5 , FIG. 5 is a second structural schematic diagram of a display component according to an exemplary embodiment. The heat dissipation component 12 is provided with a cut-off groove 121, and the cut-off groove 121 is used to provide a deformation space for the display screen.

In an embodiment of the present disclosure, a truncated groove is provided on the heat dissipation component; the truncated groove forms a deformation space for the display screen to deform.

Here, the cutting groove may penetrate the surface of the heat dissipation component; or, the cutting groove may not penetrate the surface of the heat dissipation component.

The cutting groove can be disposed at the central position of the heat dissipation component; or, the cutting groove can be disposed at any position of the heat dissipation component.

It can be understood that when the user presses the area corresponding to the cutting groove on the display screen, the deformation amount of the display screen decreases linearly from the area corresponding to the cutting groove to the surrounding area of the display screen.

It should be noted that since the display screen is installed on the middle frame assembly, when the display screen is pressed, the deformation of the display screen is small or even impossible due to the support of the middle frame assembly. As a result, the pressure-sensitive component cannot accurately sense the pressure on the display screen.

In the embodiment of the present disclosure, a cut-off groove is provided on the heat dissipation component in the middle frame assembly, and the cut-off groove is used to provide a deformation space for the display screen, thereby reducing the internal stress generated when the display screen deforms, so that the pressure-sensitive component can accurately It senses the pressure of the display screen and improves the accuracy of the pressure detection of the display component, thus improving the user experience.

In some embodiments, as shown in FIG. 5 , the middle frame assembly 11 is provided with an accommodating groove 11 a, and at least part of the accommodating groove 11 a runs through the middle frame assembly 11 in a direction perpendicular to the surface of the middle frame assembly 11 . box component 11;

At least part of the heat dissipation component 12 is installed in the accommodating groove 11a.

In an embodiment of the present disclosure, an accommodating groove is provided on the middle frame component; at least part of the accommodating groove penetrates the first surface and the second surface of the middle frame component.

It can be understood that the middle frame assembly is formed with a hollow area (ie, the area where the accommodation groove is located) and a non-hollow area.

Here, the heat dissipation component may be embedded and installed in the accommodating groove, or a partial area of the heat dissipating component may be installed in the accommodating groove.

It can be understood that when the heat dissipation component is embedded and installed in the accommodating groove, the electronic devices mounted on the first surface and the second surface of the middle frame component are dissipated. When the heat dissipation component is partially installed in the receiving groove, the electronic devices mounted on the first surface of the middle frame component can be dissipated.

The heat dissipation component can be bonded in the accommodating groove, or a fixing component is provided at the notch of the accommodating groove, and the fixing component is located on the second surface of the middle frame component; using the The fixing component prevents the heat dissipation component from falling from the containing groove.

It can be understood that in order to dissipate heat for the electronic components in the display assembly, it is usually necessary to install a heat dissipation assembly in the display assembly. The heat dissipation assembly itself has a certain thickness. Adding a heat dissipation assembly to the display assembly will increase the size of the display assembly. Overall thickness.

In embodiments of the present disclosure, an accommodating groove that at least partially penetrates the middle frame assembly is provided on the middle frame assembly, and at least part of the heat dissipation assembly is installed in the accommodating groove, so that the heat dissipation assembly can be used to achieve display control. The heat dissipation of the components does not increase the thickness of the display components, improving the user experience.

In some embodiments, the display component includes:

The first pressure-sensitive component;

In this embodiment of the present disclosure, the display component includes: a first pressure-sensitive component and a second pressure-sensitive component;

Wherein, the first pressure-sensitive component and the second pressure-sensitive component are arranged on the middle frame component at intervals. By arranging the first pressure-sensitive component and the second pressure-sensitive component at intervals, the enlargement of the The distance between the first pressure-sensitive component and the second pressure-sensitive component reduces the situation where the sensing area of the first pressure-sensitive component overlaps with the sensing area of the second pressure-sensitive component.

The heat dissipation component is disposed on the middle frame component and is located between the first pressure-sensitive component and the second pressure-sensitive component.

It can be understood that by arranging the heat dissipation component between the first pressure-sensitive component and the second pressure-sensitive component, the first pressure-sensitive component and the second pressure-sensitive component are dissipated through the heat dissipation component, thereby reducing the heat dissipation component in the display component. quantity to improve heat dissipation efficiency.

In some embodiments, the first pressure-sensitive component and the second pressure-sensitive component are parallel, and the distance between the second pressure-sensitive component and the first pressure-sensitive component is less than or equal to 60 mm.

In the embodiment of the present disclosure, the first pressure-sensitive component and the second pressure-sensitive component are arranged in parallel on the middle frame component, and the gap between the first pressure-sensitive component and the second pressure-sensitive component is The distance is less than or equal to 60mm.

In embodiments of the present disclosure, two pressure-sensing components (i.e., a first pressure-sensing component and a second pressure-sensing component) are arranged in parallel on the middle frame component, and the first pressure-sensing component and the second pressure-sensing component are The distance between them is less than or equal to 60mm, reducing the overlap between the sensing area of the first pressure-sensitive component and the second pressure-sensitive component, and ensuring that the sensing area of the pressure-sensitive component covers the touch control of the display screen. In the case of area, the number of pressure-sensitive components configured in the display component is reduced, and the cost of pressure sensing of the display component is reduced.

In some embodiments, the first pressure-sensitive component and the second pressure-sensitive component are parallel to the first frame of the display screen; the first pressure-sensitive component, the second pressure-sensitive component and the The second frame of the display screen is vertical; the length of the first frame of the display screen is shorter than the length of the second frame.

It can be understood that the first frame may be a horizontal frame of the display screen, and the second frame may be a longitudinal frame of the display screen; the first pressure-sensitive component and the second pressure-sensitive component may be horizontally Set on the middle frame component.

In other embodiments, the first pressure-sensitive component and the second pressure-sensitive component may be symmetrically distributed with respect to the Y-axis direction of the middle frame component.

Here, a two-dimensional coordinate system can be established based on the center point of the middle frame component as the origin, and the X-axis direction and Y-axis direction of the middle frame component can be obtained.

The first pressure-sensitive component and the second pressure-sensitive component are symmetrically distributed relative to the Y-axis direction, that is, the distance between the first pressure-sensitive component and the two sides of the middle frame component is the same, so The distance between the second pressure-sensitive component and the two sides of the middle frame component is the same.

An embodiment of the present disclosure provides a terminal device, which includes: the display component shown in one or more of the above solutions.

In an embodiment of the present disclosure, the display component can be applied in the terminal device. The terminal device uses the display component to display images, and senses the user's pressure on the display component through the pressure-sensitive component in the display component. A touch operation of the display component is performed to respond to the touch operation.

Embodiments of the present disclosure implement at least two pressure-sensitive components between the display screen and the middle frame component, and the sensing areas of the at least two pressure-sensitive components cover the touch control area of the display screen of the terminal device. The pressure-sensitive detection at any position within the entire touch area of the display screen not only reduces the pressure-sensitive cost of the terminal equipment, but also effectively improves the design flexibility of the terminal equipment because the pressure-sensitive components occupy less space. and board space utilization. Moreover, by arranging an accommodating groove that penetrates the middle frame assembly on the middle frame assembly, and installing the heat dissipation assembly in the accommodating groove, the heat dissipation assembly can be used to dissipate the heat of the display assembly without increasing the load of the terminal device. Thickness improves user experience.

Figure 6 is a block diagram of a terminal device according to an exemplary embodiment. For example, the terminal device 20 may be a mobile phone, a mobile computer, etc.

Referring to Figure 6, the terminal device 20 may include one or more of the following components: a processing component 21, a memory 22, a power supply component 23, a multimedia component 24, an audio component 25, an input/output (I/O) interface 26, a sensor component 27, and communications component 28.

The processing component 21 generally controls the overall operations of the terminal device 20, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 21 may include one or more processors 211 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 21 may include one or more modules that facilitate interaction between processing component 21 and other components. For example, processing component 21 may include a multimedia module to facilitate interaction between multimedia component 24 and processing component 21.

Memory 22 is configured to store various types of data to support operations at device 20 . Examples of such data include instructions for any application or method operating on the terminal device 20, contact data, phonebook data, messages, pictures, videos, etc. Memory 22 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EEPROM), Programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 23 provides power to various components of the terminal device 20 . Power supply components 23 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to end devices 20 .

The multimedia component 24 includes a screen providing an output interface between the terminal device 20 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide action. In some embodiments, multimedia component 24 includes a front-facing camera and/or a rear-facing camera. When the device 20 is in an operating mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

Audio component 25 is configured to output and/or input audio signals. For example, the audio component 25 includes a microphone (MIC) configured to receive external audio signals when the terminal device 20 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in memory 22 or sent via communications component 28 . In some embodiments, audio component 25 also includes a speaker for outputting audio signals.

The I/O interface 26 provides an interface between the processing component 21 and a peripheral interface module. The peripheral interface module may be a keyboard, a click wheel, a button, etc. These buttons may include, but are not limited to: Home button, Volume buttons, Start button, and Lock button.

The sensor component 27 includes one or more sensors for providing various aspects of status assessment for the terminal device 20 . For example, the sensor component 27 can detect the open/closed state of the device 20 and the relative positioning of components, such as the display and keypad of the terminal device 20. The sensor component 27 can also detect the terminal device 20 or a component of the terminal device 20. position changes, the presence or absence of user contact with the terminal device 20 , the orientation or acceleration/deceleration of the terminal device 20 and the temperature changes of the terminal device 20 . Sensor assembly 27 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 27 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 27 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 28 is configured to facilitate wired or wireless communication between the terminal device 20 and other devices. The terminal device 20 can access a wireless network based on a communication standard, such as Wi-Fi, 4G or 5G, or a combination thereof. In one exemplary embodiment, communication component 28 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communications component 28 also includes a near field communications (NFC) module to facilitate short-range communications. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, the terminal device 20 may be configured by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation is used to perform the above method.

In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory 22 including instructions, is also provided, and the instructions can be executed by the processor 211 of the terminal device 20 to complete the above method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Other embodiments of the invention will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common common sense or customary technical means in the technical field that are not disclosed in the present disclosure. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the present invention is not limited to the precise construction described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

A display component, wherein the display component includes:

display screen;

A middle frame assembly for installing the display screen;

A heat dissipation component disposed between the display screen and the middle frame component;

At least two pressure-sensitive components are located between the display screen and the middle frame component and are fixedly provided on the middle frame component for sensing the pressing force on the display screen; wherein the at least The sensing areas of the two pressure-sensitive components cover the touch area of the display screen.
The display component according to claim 1, wherein the display component includes:

A reinforcing component disposed between the display screen and the pressure-sensitive component;

The reinforcing component is formed with at least one strain cavity; wherein the at least one strain cavity forms a deformation space for the display screen to deform.
The display component according to claim 2, wherein the reinforcing component includes:

A reinforcing plate, with at least one strain cavity recessed toward the first surface of the display screen;

A connection layer is provided between the display screen and the reinforcing plate, and is used to connect the display screen and the reinforcing plate.
The display assembly according to claim 2 or 3, wherein a plurality of the strain cavities are distributed in an array on the first surface of the reinforcing plate.
The display assembly according to any one of claims 2 to 4, wherein the depression depths of the plurality of strain chambers in the same row are the same; and the depression depths of the strain chambers in any two adjacent rows are different.
The display component according to any one of claims 1-5, wherein the pressure-sensitive component includes:

The first pressure-sensitive layer includes: N first pressure-sensitive resistors;

A second pressure-sensitive layer is stacked with the first pressure-sensitive layer. The second pressure-sensitive layer includes: N second pressure-sensitive resistors, where N is an integer greater than or equal to 2;

The N first varistors of the first pressure-sensitive layer are electrically connected to the N second varistors of the second pressure-sensitive layer to form a bridge circuit; wherein, the bridge circuit Used to detect the resistance change of the first varistor and/or the second varistor caused by the pressure deformation of the display screen, based on the first varistor and/or the second varistor. The resistance value of the varistor changes and a pressure-sensitive signal is output.
The display component according to claim 6, wherein N first varistors are dispersedly provided on the first pressure-sensitive layer; and/or N second varistors are dispersedly provided on the first pressure-sensitive layer. The second pressure-sensitive layer.
The display component according to claim 7, wherein the projection of the first varistor on the first pressure-sensitive layer and the projection of the second varistor on the first pressure-sensitive layer do not overlap with each other. .
The display component according to claim 7 or 8, wherein N first varistors are disposed on the first pressure-sensitive layer along the first direction;

N second piezoresistors are arranged on the second pressure-sensitive layer along a second direction; the second direction is different from the first direction.
The display assembly of claim 9, wherein an included angle exists between the first direction and the second direction.
The display component according to any one of claims 6 to 10, wherein the pressure-sensitive component includes:

A flexible circuit board is stacked with the first pressure-sensitive layer and the second pressure-sensitive layer, and the flexible circuit board is located on the side of the second pressure-sensitive layer away from the first pressure-sensitive layer;

Wherein, the flexible circuit board is electrically connected to the output end of the bridge circuit, and is electrically connected to the main board through a connector for transmitting the pressure-sensitive signal output by the bridge circuit to the main board.
The display assembly according to any one of claims 1 to 5, wherein the heat dissipation assembly is provided with a truncated groove, and the truncated groove is used to provide a deformation space for the display screen.
The display assembly according to claim 12, wherein the middle frame assembly is provided with an accommodating groove, and at least part of the accommodating groove penetrates the middle frame assembly in a direction perpendicular to the surface of the middle frame assembly;

At least part of the heat dissipation component is installed in the receiving groove.
The display component according to any one of claims 1 to 13, wherein the display component includes:

The first pressure-sensitive component;

The second pressure-sensitive component is spaced apart from the first pressure-sensitive component,

The heat dissipation component is located between the first pressure-sensitive component and the second pressure-sensitive component.
The display component according to claim 14, wherein the first pressure-sensitive component and the second pressure-sensitive component are parallel, and the distance between the second pressure-sensitive component and the first pressure-sensitive component is less than or equal to 60mm.
A terminal device, comprising the display component according to any one of claims 1-15.