Screen assembly, electronic terminal and pressure detection method and device

Abstract

The invention relates to the technical field of microelectronics, and particularly provides a screen assembly, an electronic terminal, a pressure detection method and a pressure detection device. A first pressure detection module with relatively low sensitivity and a second pressure detection module with relatively high sensitivity are arranged in a screen assembly, and the first pressure detection module and the second pressure detection module are used for jointly detecting the deformation quantity of a display module; therefore, the target pressing pressure value borne by the display module can be determined according to the pressure signals output by the two pressure detection modules. Thus, even if the value of the pressing pressure borne by the display module is large, the deformation quantity which changes to be gentle can be accurately detected, the target pressing pressure value is determined according to the deformation quantity, and therefore the accuracy of the pressure detection result can be improved.

Description

Technical Field

[0001] The present application relates to the field of microelectronics technology, and particularly to a screen assembly, an electronic terminal, and a pressure detection method and device. Background Art

[0002] As users' requirements for screen-to-body ratio are getting higher and higher, currently, more and more electronic terminals use touch screens as the screen assemblies of the devices, so that the screen assemblies can not only meet the content display requirements but also support interactive functions. With the diversification of interaction methods, some electronic terminals integrate pressure sensing technology in the touch screen, so that different operations can be triggered according to the magnitude of the pressure applied by the user on the screen assembly. However, through the research of the inventor, it is found that the prior art is difficult to accurately detect the pressing pressure value borne by the screen assembly. Summary of the Invention

[0003] The purpose of the present application aims to at least solve one of the above technical defects, especially the technical defect of low accuracy in detecting pressure values in the prior art.

[0004] In a first aspect, an embodiment of the present application provides a screen assembly, including:

[0005] A display module, having a display side and a back side opposite to the display side;

[0006] A first pressure detection module, arranged towards the back side, for outputting a first pressure signal according to the deformation amount of the display module;

[0007] A second pressure detection module, arranged towards the back side, and the sensitivity of the second pressure detection module is higher than that of the first pressure detection module; the second pressure detection module is used for outputting a second pressure signal according to the deformation amount of the display module;

[0008] A control module, respectively connected to the first pressure detection module and the second pressure detection module, for determining the target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal.

[0009] In some embodiments, along the thickness direction of the screen assembly, the shortest distance between the second pressure detection module and the display module is [0, a], where a is the critical deformation amount of the display module;

[0010] Wherein, the critical deformation amount is the deformation amount corresponding to when the target relationship curve tends to be flat, and the target relationship curve is the relationship curve between the deformation amount of the display module and the pressing pressure value.

[0011] In some embodiments, along the thickness direction of the screen assembly, the shortest distance between the second pressure detection module and the display module is a.

[0012] In some embodiments, the first pressure detection module is disposed in contact with the back side.

[0013] In some embodiments, the screen assembly further includes a middle frame, and the control module includes a flexible printed circuit board;

[0014] The flexible printed circuit board includes a first side facing the back side and a second side opposite to the first side. The first side is provided with the first pressure detection module and the second pressure detection module, and the second side is provided with an adhesive. The second side is fixed to the middle frame through the adhesive.

[0015] In a second aspect, an embodiment of the present application provides an electronic terminal, including the screen assembly according to any one of the above embodiments.

[0016] In a third aspect, an embodiment of the present application provides a pressure detection method, which is applied to the screen assembly according to any one of the above embodiments. The method includes:

[0017] Receiving a first pressure signal detected by the first pressure detection module;

[0018] Receiving a second pressure signal detected by the second pressure detection module;

[0019] Determining a target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal.

[0020] In some embodiments, the determining the target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal includes:

[0021] Determining a first pressure value according to the first pressure signal and determining a second pressure value according to the second pressure signal;

[0022] If the first pressure value falls within a preset small pressure range, the first gain coefficient corresponding to the first pressure detection module is greater than the second gain coefficient corresponding to the second pressure detection module; otherwise, the first gain coefficient is less than the second gain coefficient;

[0023] Determining the target pressing pressure value according to the first gain coefficient, the second gain coefficient, the first pressure value, and the second pressure value.

[0024] In some embodiments, the determining the target pressing pressure value according to the first gain coefficient, the second gain coefficient, the first pressure value, and the second pressure value includes:

[0025] Query a preset pressing correspondence according to the first pressure value and the second pressure value, and obtain a first calibrated pressing pressure value and a second calibrated pressing pressure value; wherein, the pressing correspondence is the correspondence between the pressure value detected by the first pressure detection module, the pressure value detected by the second pressure detection module, and the actual pressing pressure value;

[0026] Calculate the target pressing pressure value based on the first gain coefficient, the second gain coefficient, the first calibrated pressing pressure value, and the second calibrated pressing pressure value.

[0027] In a fourth aspect, an embodiment of the present application provides a pressure detection device, which is applied to the screen assembly described in any of the above embodiments. The device includes:

[0028] A first receiving module, configured to receive a first pressure signal detected by the first pressure detection module;

[0029] A second receiving module, configured to receive a second pressure signal detected by the second pressure detection module;

[0030] A target pressing pressure value determination module, configured to determine a target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal.

[0031] In the screen assembly, electronic terminal, pressure detection method, and pressure detection device provided in some embodiments of the present application, by setting a first pressure detection module with lower sensitivity and a second pressure detection module with higher sensitivity in the screen assembly, and using the first pressure detection module and the second pressure detection module to jointly detect the deformation amount of the display module, the target pressing pressure value borne by the display module can be determined according to the pressure signals output by the two pressure detection modules. In this way, even if the pressing pressure value borne by the display module is large, the present application can accurately detect the deformation amount with a gentle change trend and determine the target pressing pressure value accordingly, thereby improving the accuracy of the pressure detection result. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 For one embodiment, the relationship curve between the screen deformation amount and the applied pressure;

[0034] Figure 2In one embodiment, it is a schematic structural diagram of a screen component;

[0035] Figure 3 In one embodiment, it is one of the schematic diagrams of the settings of the first pressure detection module and the second pressure detection module;

[0036] Figure 4 In one embodiment, it is another schematic diagram of the settings of the first pressure detection module and the second pressure detection module;

[0037] Figure 5 In one embodiment, it is a schematic flowchart of a pressure detection method;

[0038] Figure 6 In one embodiment, it is a schematic structural diagram of a pressure detection device. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0040] When the screen component is pressed, under the action of the pressing pressure, the screen component will deform and generate a certain amount of deformation. Moreover, the deformation amount of the screen component is related to the pressing pressure. In most cases, the deformation amount of the screen component is positively correlated with the pressing pressure borne by the screen component. That is, the greater the pressing pressure borne by the screen component, the greater the deformation amount. Therefore, this characteristic can be utilized to determine the magnitude of the pressing pressure borne by the screen component by detecting the deformation amount of the screen component and obtain the target pressing pressure value.

[0041] However, affected by factors such as the composition material and setting method of the screen component, the deformation of the screen component is limited. For example, in some implementation manners, the display module of the screen component is adhesively fixed to the front shell with glue around. In this setting method, there is a certain acting force between the screen component and the front shell, so that the screen component cannot deform without limit.

[0042] Under the influence of these limiting factors, the relationship curve between the deformation amount of the screen component and the pressing pressure borne by the screen component can be as Figure 1 shown. Before the critical pressure value F', the deformation amount of the screen component changes greatly. After the critical pressure value F', the change in the deformation amount of the screen component is small, and the deformation amount of the screen component tends to be stable.

[0043] In the prior art, pressure sensing is achieved by setting a pressure detection probe with low sensitivity in the screen component. Therefore, when the pressing pressure is less than the critical pressure value F', the deformation amount of the screen component changes significantly, so the pressure detection probe can detect a significantly changed pressure value. However, when the pressing pressure is greater than the critical pressure value F', even if the user continuously applies a greater pressing pressure, the deformation amount of the screen component changes little. It is difficult for the pressure detection probe in the prior art to accurately detect the magnitude of the pressing pressure based on the small change in the deformation amount, ultimately resulting in the technical problem that it is difficult to accurately detect the pressing pressure value borne by the screen component in the prior art. When the electronic terminal needs to make corresponding responses based on the magnitude of the pressure, the inaccurate pressure value will cause the electronic terminal to be difficult to accurately respond to the user operation, thereby affecting the user experience.

[0044] To solve the above problems, the embodiments of the present application provide a screen component, an electronic terminal, a pressure detection method, and a pressure detection device. By setting a first pressure detection module with low sensitivity and a second pressure detection module with high sensitivity in the screen component, and using the first pressure detection module and the second pressure detection module to jointly detect the deformation amount of the display module, the target pressing pressure value borne by the display module can be determined according to the pressure signals output by the two pressure detection modules. In this way, even if the pressing pressure value borne by the display module is large, the present application can accurately detect the deformation amount with a gentle change trend and determine the target pressing pressure value accordingly, thereby improving the accuracy of the pressure detection result.

[0045] In some embodiments, the present application provides a screen component. As Figure 2 shown, the screen component may include a display module, a first pressure detection module, a second pressure detection module, and a control module. Among them, the display module refers to a module that can display images or information under the drive of an electrical signal, and may include, but is not limited to, an LCD (Liquid Crystal Display) module, an OLED (Organic Light-Emitting Diode) module, or an LED (Light-Emitting Diode) module, etc.

[0046] Both the first pressure detection module and the second pressure detection module are modules for pressure detection. Among them, the sensitivity of the first pressure detection module is lower than that of the second pressure detection module. In the present application, the sensitivity of the pressure detection module refers to the sensitivity of the pressure sensor to pressure changes. That is, compared with the first pressure detection module, the second pressure detection module is more sensitive to pressure changes. The control module refers to a module with data acquisition and data processing functions.

[0047] It can be understood that the first pressure detection module, the second pressure detection module, and the control module can all be implemented in any way, and the present application does not make specific limitations in this regard. For example, the first pressure detection module may include a low-sensitivity pressure detection probe, and the second pressure detection module may include a high-sensitivity pressure detection probe. Further, in some examples, both the low-sensitivity pressure detection probe and the high-sensitivity pressure detection probe can be made of SUS material.

[0048] Specifically, the display module has a display side and a back side, and the display side and the back side are arranged opposite to each other. Among them, the display side can be the side where the display surface is located, that is, the side used to display images and / or information. If the display surface is used as the front side of the display module, the back side refers to the side where the back of the display module is located.

[0049] Both the first pressure detection module and the second pressure detection module are arranged facing the back side. When the display module is pressed, the display module will deform away from the display side and act on the first pressure detection module and the second pressure detection module, so that the first pressure detection module can output a first pressure signal according to the deformation amount of the display module, and the second pressure detection module can output a second pressure signal according to the deformation amount of the display module.

[0050] It should be noted that the relative positional relationship between the first pressure detection module and the second pressure detection module can be determined according to the actual situation, and the present application does not make specific limitations in this regard, as long as both the first pressure detection module and the second pressure detection module are arranged facing the back side of the display module. For example, the first pressure detection module and the second pressure detection module can be arranged on the same side or different sides of the flexible circuit board. Another example is that the included angle between the length direction of the first pressure detection module and the length direction of the second pressure detection module can be in the range of 0° to 360°.

[0051] Figure 3 Illustrates a schematic diagram of the setting obtained by observing along the thickness direction of the screen assembly in some examples. In 4 illustrates a schematic diagram of the setting obtained by observing along the thickness direction of the screen assembly in other examples. The thickness direction of the screen assembly can be the direction from the display side of the display module to the back side, that is, the direction from the display module to the middle frame.

[0052] It should be noted that although Figure 4 Illustrates a plurality of second pressure detection modules, but it is not to limit the number of second pressure detection modules, but to illustrate various optional implementation manners of the second pressure detection module. In application, the first pressure detection module and the second pressure detection module can be arranged according to Figure 3 and Figure 4 Illustrates one of the various setting manners to determine the relative positional relationship between the two.

[0053] The control module is respectively connected to the first pressure detection module and the second pressure detection module, and is configured to determine a target pressing pressure value according to the first pressure signal detected by the first pressure detection module and the second pressure signal detected by the second pressure detection module. The target pressing pressure value refers to the pressing pressure value acting on the display module.

[0054] In some embodiments, along the thickness direction of the screen assembly, the shortest distance between the second pressure detection module and the display module is d, and d is in the range of [0, a]. Here, a is the critical deformation amount of the display module. The critical deformation amount is the deformation amount corresponding to when the target relationship curve tends to be flat, that is, the deformation amount corresponding to the critical pressure value F'. The target relationship curve is the relationship curve between the deformation amount of the display module and the pressing pressure value. In some examples, the specific value of a can be obtained in advance through simulation or measurement experiments.

[0055] It can be understood that when d = 0, the second pressure detection module is in contact with the back side of the display module. When d > 0, there is a gap between the second pressure detection module and the back side of the display module. In this case, if the deformation amount of the display module in the thickness direction is less than d, the second pressure detection module can output a second pressure signal with a pressure value of zero.

[0056] In this embodiment, since d is in the range of [0, a], therefore, when the actual deformation amount of the display module is greater than or equal to the critical deformation amount, the highly sensitive second pressure detection module can be triggered in time for pressure detection, so that the highly sensitive pressure detection module can be used to measure the deformation amount with insignificant change in time, thereby further improving the accuracy of pressure detection.

[0057] In some embodiments, considering that when the pressing pressure value is small, the deformation amount of the display module is prone to jitter. At this time, if the highly sensitive pressure detection module is used for pressure detection, an unstable pressure signal is likely to be obtained. Based on this, to improve the stability of the pressure signal and further improve the accuracy of pressure detection, along the thickness direction of the screen assembly, the shortest distance d between the second pressure detection module and the display module is a.

[0058] In some embodiments, the first pressure detection module is arranged in contact with the back side of the display module, that is, the first pressure detection module can directly contact the back side of the display module. In this way, when the pressing pressure value is small, a low-sensitivity pressure detection module can be used for pressure detection to prevent the problem of pressure signal jitter caused by too high sensitivity of the pressure detection module during initial deformation, thereby further improving the accuracy of pressure detection.

[0059] In some embodiments, the first pressure detection module is in contact with the back side of the display module, and the shortest distance d between the second pressure detection module and the display module is a. In this way, stable detection can be achieved through the low-sensitivity pressure detection module, and high-precision detection can be achieved through the high-sensitivity pressure detection module, thereby further improving the accuracy of pressure detection.

[0060] In some embodiments, the screen assembly further includes a middle frame, and the control module includes a flexible printed circuit board. The flexible circuit includes a first side and a second side. The first side faces the back side of the display module, and the second side is arranged opposite to the first side. The first pressure detection module and the second pressure detection module can be disposed on the first side of the flexible printed circuit board. The second side of the flexible circuit board may have an adhesive (such as a back glue), so that the flexible circuit board can be attached to the middle frame through the adhesive, thereby fixing the first pressure detection module and the second pressure detection module.

[0061] In some embodiments, in addition to the flexible circuit board, the control module may further include a pressure detection module. The first pressure detection module and the second pressure detection module can be connected to the pressure detection module through the flexible circuit board, thereby realizing the electrical connection between the pressure detection module and the first pressure detection module, and the electrical connection between the pressure detection module and the second pressure detection module. Further, in some examples, the pressure detection module may be a main board chip.

[0062] In some embodiments, the present application further provides an electronic terminal, which includes the screen assembly described in any of the above embodiments. It can be understood that the electronic terminal described in this embodiment can be any device with a pressure sensing function, which can be, but is not limited to, a smart phone, a tablet computer, a notebook computer, a laptop computer, a desktop computer, a wearable device, an Internet of Things device, an e-reader, a game device, etc.

[0063] It should be noted that in addition to the screen assembly, the electronic terminal may further include more components, and the connection relationship between the components can be determined according to the actual situation, and the present application does not make specific limitations on this.

[0064] By adopting the screen assembly described in the above embodiments, the electronic terminal can more accurately determine the pressing pressure value borne by the screen assembly, thereby providing a more accurate response based on the pressing pressure value, and further improving the user experience.

[0065] In some embodiments, the present application further provides a pressure detection method, which can be applied to the screen assembly of any of the above embodiments for accurately detecting the pressing pressure value borne by the screen assembly. It can be understood that the pressure detection method can be executed by a device / module with data processing capabilities, such as the control module in the above embodiments.

[0066] As Figure 5As shown, the pressure detection method provided by this application may include the following steps:

[0067] S502: Receive a first pressure signal detected by a first pressure detection module;

[0068] S504: Receive a second pressure signal detected by a second pressure detection module;

[0069] S506: Determine a target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal.

[0070] Specifically, the control module can jointly determine the pressing pressure value borne by the display module according to the first pressure signal detected by the first pressure detection module with low sensitivity and the second pressure signal detected by the second pressure detection module with high sensitivity, and obtain the target pressing pressure value.

[0071] In some embodiments, determining the target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal includes:

[0072] Step A1: Determine a first pressure value according to the first pressure signal and a second pressure value according to the second pressure signal;

[0073] Step A3: If the first pressure value falls within a preset small pressure range, the first gain coefficient corresponding to the first pressure detection module is greater than the second gain coefficient corresponding to the second pressure detection module; otherwise, the first gain coefficient is less than the second gain coefficient;

[0074] Step A5: Determine the target pressing pressure value according to the first gain coefficient, the second gain coefficient, the first pressure value and the second pressure value.

[0075] In this embodiment, since the first pressure detection module performs better when the pressing pressure is small, when the pressing pressure is small, the target pressing pressure value can be preferentially determined according to the first pressure value. When the pressing pressure is large, for example, when the pressing pressure is greater than or equal to the critical pressure value F', the detection result of the second pressure detection module is more accurate. Therefore, in this case, the target pressing pressure value can be preferentially determined according to the second pressure value. In this way, a more accurate target pressing pressure value can be obtained.

[0076] Specifically, when receiving the first pressure signal and the second pressure signal, the control module can first determine the first pressure value corresponding to the first pressure signal and the second pressure value corresponding to the second pressure signal. It can be understood that the first pressure value is the pressure value detected by the first pressure detection module, and the second pressure value is the pressure value detected by the second pressure detection module.

[0077] When the first pressure value is obtained, the control module can determine whether the first pressure value falls within a preset small pressure range. If so, it can be determined that the pressing pressure borne by the display module is small. Therefore, the first gain coefficient can be set to a value greater than the second gain coefficient. In this way, when calculating the target pressing pressure value, the first pressure value can have a higher weight, thereby reducing the adverse effects caused by the signal jitter of the second pressure value.

[0078] If the first pressure value does not fall within the preset small pressure range, it indicates that the pressing pressure borne by the display module is large. Therefore, the first gain coefficient can be set to a value less than the second gain coefficient. In this way, when calculating the target pressing pressure value, the second pressure value can have a higher weight, thereby reducing the adverse effects caused by the low accuracy of the first pressure value.

[0079] It can be understood that the specific range of the small pressure range can be preset according to the actual situation. For example, it can be obtained by testing the screen component, and the present application does not make specific limitations on this.

[0080] In some embodiments, determining the target pressing pressure value according to the first gain coefficient, the second gain coefficient, the first pressure value, and the second pressure value includes:

[0081] Step A51: Query the preset pressing correspondence according to the first pressure value and the second pressure value, and obtain the first calibrated pressing pressure value and the second calibrated pressing pressure value; wherein, the pressing correspondence is the correspondence between the pressure value detected by the first pressure detection module, the pressure value detected by the second pressure detection module, and the actual pressing pressure value;

[0082] Step A53: Calculate the target pressing pressure value based on the first gain coefficient, the second gain coefficient, the first calibrated pressing pressure value, and the second calibrated pressing pressure value.

[0083] In this embodiment, first, the pressing correspondence between the first pressure value, the second pressure value, and the actual pressing pressure value can be preset. In some examples, the pressing correspondence can be obtained in advance through a calibration step, and the calibration step can be:

[0084] Step B1: Determine the current pressure value, and continuously apply a pressing pressure to the display module according to the current pressure value; wherein, the current pressure value is obtained by incrementing in steps of 0.1N, with a lower limit value of 0.7N and an upper limit value of 3N;

[0085] Step B2: During the process of continuously applying the pressing pressure to the display module according to the current pressure value, obtain the pressure value detected by the first pressure detection module and the pressure value detected by the second pressure detection module;

[0086] Step B3: Generate the correspondence relationship among the current pressure value (i.e., the pressing pressure value), the pressure value detected by the first pressure detection module, and the pressure value detected by the second pressure detection module, to obtain the pressing correspondence relationship.

[0087] During the actual pressure detection process, the control module can query each pressing correspondence relationship according to the actually measured first pressure value and second pressure value, so as to obtain the two pressing pressure values that best match the first pressure value and the second pressure value, and obtain the first calibrated pressing pressure value and the second calibrated pressing pressure value. In some examples, the first calibrated pressing pressure value and the second calibrated pressing pressure value can be the pressing pressure values in the two pressing correspondence relationships with the highest matching degrees with the first pressure value and the second pressure value. In other examples, the first calibrated pressing pressure value can be the pressing pressure value queried according to the first pressure value, and the second calibrated pressing pressure value can be the pressing pressure value queried according to the second pressure value.

[0088] For example, if the first pressing correspondence relationship is: pressing pressure value 2N - first pressure value 1.9N - second pressure value 0.3N, the second pressing correspondence relationship is pressing pressure value 2.2N - first pressure value 2N - second pressure value 0.6N, the actually measured first pressure value is 1.92N, and the actually measured second pressure value is 0.5N. After querying according to 1.92N and 0.5N, the first calibrated pressing pressure value can be obtained as 2N, and the second calibrated pressing pressure value can be obtained as 2.2N.

[0089] After obtaining the first calibrated pressing pressure value and the second calibrated pressing pressure value, the present application can calculate the target pressing pressure value based on the first gain coefficient, the second gain coefficient, the first calibrated pressing pressure value, and the second calibrated pressing pressure value. In this way, the accuracy of the pressure detection result can be further improved.

[0090] Next, the pressure detection device provided by the embodiments of the present application will be described. The pressure detection device described below can be correspondingly referred to the pressure detection method described above.

[0091] In some embodiments, the present application provides a pressure detection device, which can be applied to the screen assembly in any of the above embodiments, and is used to accurately detect the pressing pressure value borne by the screen assembly.

[0092] As Figure 6 shown, the pressure detection device 600 of the present application may include:

[0093] A first receiving module 602, configured to receive a first pressure signal detected by the first pressure detection module;

[0094] A second receiving module 604, configured to receive a second pressure signal detected by the second pressure detection module;

[0095] A target pressing pressure value determination module 606, configured to determine a target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal.

[0096] In some embodiments, the target pressing pressure value determination module 606 of the present application includes:

[0097] A detected pressure value calculation unit, configured to determine a first pressure value according to the first pressure signal and determine a second pressure value according to the second pressure signal;

[0098] A gain coefficient determination unit, configured to, if the first pressure value falls within a preset small pressure range, the first gain coefficient corresponding to the first pressure detection module is greater than the second gain coefficient corresponding to the second pressure detection module, otherwise, the first gain coefficient is less than the second gain coefficient;

[0099] A pressing pressure value determination unit, configured to determine a target pressing pressure value according to the first gain coefficient, the second gain coefficient, the first pressure value, and the second pressure value.

[0100] In some embodiments, the pressing pressure value determination unit of the present application includes:

[0101] A query unit, configured to query a preset pressing correspondence according to the first pressure value and the second pressure value, and obtain a first calibrated pressing pressure value and a second calibrated pressing pressure value; wherein, the pressing correspondence is the correspondence between the pressure value detected by the first pressure detection module, the pressure value detected by the second pressure detection module, and the actual pressing pressure value;

[0102] A pressing pressure value calculation unit, configured to calculate a target pressing pressure value based on the first gain coefficient, the second gain coefficient, the first calibrated pressing pressure value, and the second calibrated pressing pressure value.

[0103] Finally, it should be noted that in the description of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0104] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0105] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0106] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0107] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0108] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0109] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A screen assembly, characterized in that: include: A display module having a display side and a back side opposite to the display side; A first pressure detection module, disposed toward the back side, for outputting a first pressure signal according to a deformation amount of the display module; a second pressure detection module, arranged toward the back side, and having a higher sensitivity than that of the first pressure detection module; the second pressure detection module is used to output a second pressure signal according to the deformation amount of the display module; The control module is connected to the first pressure detection module and the second pressure detection module respectively, and is used to determine a target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal.

2. The screen assembly according to claim 1, characterized in that: Along the thickness direction of the screen assembly, the shortest distance between the second pressure detection module and the display module is [0, a], where a is the critical deformation amount of the display module; The critical deformation amount is the deformation amount corresponding to when the target relationship curve tends to be flat, and the target relationship curve is the relationship curve between the deformation amount of the display module and the pressing pressure value.

3. The screen assembly according to claim 2, characterized in that: Along the thickness direction of the screen assembly, the shortest distance between the second pressure detection module and the display module is a.

4. The screen assembly according to claim 1, characterized in that: The first pressure detection module is disposed in contact with the back side.

5. The screen assembly according to any one of claims 1 to 4, characterized in that: The screen assembly further includes a middle frame, and the control module includes a flexible circuit board; The flexible circuit board includes a first surface facing the back side and a second surface opposite to the first surface, the first surface is provided with the first pressure detection module and the second pressure detection module, the second surface is provided with an adhesive, and the second surface is fixed to the middle frame by the adhesive.

6. An electronic terminal, characterized in that: Comprising the screen assembly as described in any one of claims 1 to 5.

7. A pressure detection method, characterized in that: Applied to the screen assembly according to any one of claims 1 to 5, the method comprises: Receiving a first pressure signal detected by the first pressure detection module; Receiving a second pressure signal detected by the second pressure detection module; A target pressing pressure value acting on the display module is determined according to the first pressure signal and the second pressure signal.

8. The pressure detection method according to claim 7, characterized in that: The step of determining a target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal includes: determining a first pressure value according to the first pressure signal, and determining a second pressure value according to the second pressure signal; If the first pressure value falls within a preset small pressure interval, the first gain coefficient corresponding to the first pressure detection module is greater than the second gain coefficient corresponding to the second pressure detection module; otherwise, the first gain coefficient is less than the second gain coefficient; The target pressing pressure value is determined according to the first gain coefficient, the second gain coefficient, the first pressure value, and the second pressure value.

9. The pressure detection method according to claim 8, characterized in that: The determining the target pressing pressure value according to the first gain coefficient, the second gain coefficient, the first pressure value, and the second pressure value includes: A preset pressing correspondence relationship is queried according to the first pressure value and the second pressure value, and a first calibrated pressing pressure value and a second calibrated pressing pressure value are obtained; wherein the pressing correspondence relationship is a correspondence relationship between the pressure value detected by the first pressure detection module, the pressure value detected by the second pressure detection module and the actual pressing pressure value; The target pressing pressure value is calculated based on the first gain coefficient, the second gain coefficient, the first calibration pressing pressure value, and the second calibration pressing pressure value.

10. A pressure detection device, characterized in that: Applicable to the screen assembly according to any one of claims 1 to 5, the device comprising: A first receiving module, used to receive a first pressure signal detected by the first pressure detection module; A second receiving module, used to receive a second pressure signal detected by the second pressure detection module; The target pressing pressure value determining module is used to determine a target pressing pressure value acting on the display module according to the first pressure signal and the second pressure signal.

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