Fingerprint module, terminal equipment, display screen control method and device

Abstract

The present disclosure is about a fingerprint module, a terminal device, a display screen control method and device, wherein the fingerprint module includes: a sensor component and a temperature adjustment unit; the sensor component and the temperature adjustment unit are sequentially stacked under the display screen of the terminal device, and the sensor component is connected to the display screen of the terminal device; the temperature adjustment unit is used to adjust the temperature according to the change of the electrical signal to change the temperature of the corresponding area of ​​the display screen. The temperature adjustment unit of the present disclosure can achieve temperature regulation, thereby changing the temperature of the sensor component by heat conduction, and then changing the temperature of the display screen; in a high temperature and dry environment or finger state, by adjusting the temperature of the display screen, the humidity of the surface of the display screen can be changed, thereby improving the skin condition of the user's fingers in contact with the display screen, avoiding excessive dryness of the skin, and improving the accuracy and efficiency of fingerprint recognition.

Description

Technical Field

[0001] The present disclosure relates to the field of terminals, and in particular to a fingerprint module, a terminal device, and a display screen control method and device. Background Art

[0002] With the development of technology, fingerprint recognition or unlocking function has become a basic configuration of smart door locks, mobile phones, computers and other devices. In the current fingerprint recognition scheme, capacitive fingerprint recognition devices (such as capacitive fingerprint sensors) or optical fingerprint recognition devices (such as infrared fingerprint sensors) are mostly used. Capacitive fingerprint recognition devices or optical fingerprint recognition devices need to have a stable fingerprint recognition rate under certain conditions. When the above conditions are not met, the fingerprint recognition success rate is low. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a fingerprint module, a terminal device, and a display screen control method and device.

[0004] According to a first aspect of an embodiment of the present disclosure, a fingerprint module is provided, comprising: a sensor component and a temperature adjustment unit;

[0005] The sensor assembly and the temperature adjustment unit are stacked in sequence under the display screen of the terminal device, and the sensor assembly is connected to the display screen of the terminal device; the temperature adjustment unit is used to adjust the temperature according to the change of the electrical signal to change the temperature of the corresponding area of ​​the display screen.

[0006] Optionally, the sensor assembly is bonded to the display screen by means of thermally conductive adhesive.

[0007] Optionally, the temperature regulating part is configured as a semiconductor cooling device; a side of the temperature regulating part close to the display screen is a low-temperature regulating layer, and a side of the temperature regulating part away from the display screen is a high-temperature regulating layer.

[0008] Optionally, a heat dissipation structure is provided on the high temperature regulating layer.

[0009] Optionally, a conduction part is further included; the conduction part is arranged between the sensor component and the temperature adjustment part.

[0010] Optionally, the conducting part is configured as a metal conducting part.

[0011] According to a second aspect of an embodiment of the present disclosure, a terminal device is provided, comprising a display screen and the fingerprint module according to the first aspect, wherein the fingerprint module is arranged under the display screen.

[0012] According to a third aspect of an embodiment of the present disclosure, a method for adjusting the temperature of a display screen is provided, comprising:

[0013] In response to the fingerprint state of the fingerprint detected in the fingerprint recognition area on the display screen being the first state, obtaining current environmental information; wherein the first state is used to represent a state when the humidity of the fingerprint is lower than a preset threshold, and the current environmental information includes the current environmental temperature and the current environmental humidity;

[0014] According to the current environmental information, the fingerprint recognition area is adjusted to a target temperature; wherein the target temperature is a temperature at which condensation can be generated on the display screen.

[0015] Optionally, the method further comprises:

[0016] Get the image data of the fingerprint detected in the fingerprint recognition area on the current display screen;

[0017] In response to the image data not meeting a preset condition, determining that the fingerprint state of the fingerprint is a first state.

[0018] Optionally, adjusting the fingerprint recognition area to a target temperature according to the current environmental information includes:

[0019] Determine first temperature information according to the current environment information; wherein the first temperature information is used to represent: under the current environment, the target temperature at which the preset medium can produce condensation;

[0020] determining a regulating temperature of a temperature regulating unit according to the first temperature information;

[0021] The temperature adjustment unit is controlled to adjust to the adjustment temperature, so as to adjust the fingerprint recognition area to the target temperature.

[0022] Optionally, determining the first temperature information according to the current environment information includes:

[0023] Acquire pre-stored first configuration information; wherein the first configuration information is used to characterize the correspondence between environmental information and condensation temperature information of a preset medium;

[0024] The first temperature information corresponding to the current environment information is determined according to the current environment information and the first configuration information.

[0025] Optionally, determining the adjustment temperature of the temperature adjustment unit according to the first temperature information includes:

[0026] According to the first temperature information and the preset temperature loss, an adjustment temperature corresponding to the first temperature information is determined.

[0027] Optionally, controlling the temperature adjustment unit to adjust to the adjustment temperature includes:

[0028] determining voltage information of the temperature regulating unit according to the regulating temperature;

[0029] The temperature adjustment unit is controlled to operate according to a voltage corresponding to the voltage information.

[0030] Optionally, determining the voltage information of the temperature adjustment unit according to the adjustment temperature includes:

[0031] Acquire pre-stored second configuration information; wherein the second configuration information is used to characterize the correspondence between the temperature information of the temperature adjustment unit and the control voltage information of the temperature adjustment unit;

[0032] Voltage information corresponding to the adjustment temperature is determined according to the adjustment temperature and the second configuration information.

[0033] According to a fourth aspect of the embodiments of the present disclosure, a display screen control device is provided, comprising:

[0034] A first acquisition module, configured to acquire current environmental information in response to the fingerprint state of the fingerprint detected in the fingerprint recognition area on the display screen being a first state; wherein the first state is used to represent a state when the humidity of the fingerprint is lower than a preset threshold, and the current environmental information includes a current environmental temperature and a current environmental humidity;

[0035] The adjustment module is used to adjust the fingerprint recognition area to a target temperature according to the current environmental information; wherein the target temperature is a temperature at which condensation can be generated on the display screen.

[0036] Optionally, the device further comprises:

[0037] The second acquisition module is used to acquire the image data of the fingerprint detected in the fingerprint recognition area on the current display screen;

[0038] The determination module is used to determine that the fingerprint state of the fingerprint is a first state in response to the image data not meeting a preset condition.

[0039] Optionally, the adjustment module includes:

[0040] A first determination submodule is used to determine first temperature information according to the current environment information; wherein the first temperature information is used to represent: under the current environment, a target temperature at which a preset medium can produce condensation;

[0041] A second determining submodule, configured to determine a regulating temperature of a temperature regulating unit according to the first temperature information;

[0042] The control submodule is used to control the temperature adjustment unit to adjust to the adjustment temperature, so as to adjust the fingerprint recognition area to the target temperature.

[0043] Optionally, the first determining submodule is used to:

[0044] Acquire pre-stored first configuration information; wherein the first configuration information is used to characterize the correspondence between environmental information and condensation temperature information of a preset medium;

[0045] The first temperature information corresponding to the current environment information is determined according to the current environment information and the first configuration information.

[0046] Optionally, the second determining submodule is used to:

[0047] According to the first temperature information and the preset temperature loss, an adjustment temperature corresponding to the first temperature information is determined.

[0048] Optionally, the control submodule is used to:

[0049] determining voltage information of the temperature regulating unit according to the regulating temperature;

[0050] The temperature adjustment unit is controlled to operate according to a voltage corresponding to the voltage information.

[0051] Optionally, the control submodule is used to:

[0052] Acquire pre-stored second configuration information; wherein the second configuration information is used to characterize the correspondence between the temperature information of the temperature adjustment unit and the control voltage information of the temperature adjustment unit;

[0053] Voltage information corresponding to the adjustment temperature is determined according to the adjustment temperature and the second configuration information.

[0054] According to a fifth aspect of the embodiments of the present disclosure, an electronic device is provided, including:

[0055] processor;

[0056] a memory for storing executable instructions for the processor;

[0057] Wherein, the processor is configured to execute the display screen control method as described in the third aspect.

[0058] According to a sixth aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is proposed. When instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute the display screen control method described in the third aspect.

[0059] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: in the fingerprint module of the present disclosure, the temperature adjustment unit can realize temperature adjustment, thereby changing the temperature of the sensor component through heat conduction, and then changing the temperature of the display screen; in high temperature and dry environmental conditions or finger states, by adjusting the temperature of the display screen, the humidity on the surface of the display screen can be changed, thereby improving the skin condition of the user's fingers in contact with the display screen, avoiding excessive dryness of the skin, and improving the accuracy and efficiency of fingerprint recognition.

[0060] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] 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 invention.

[0062] Figure 1 The figure is a schematic diagram showing the structure of a fingerprint module according to an exemplary embodiment.

[0063] Figure 2 The figure is a schematic diagram showing the structure of a fingerprint module according to an exemplary embodiment.

[0064] Figure 3 is a flow chart of a method according to an exemplary embodiment.

[0065] Figure 4 is a flow chart of a method according to an exemplary embodiment.

[0066] Figure 5 is a flow chart of a method according to an exemplary embodiment.

[0067] Figure 6 is a flow chart of a method according to an exemplary embodiment.

[0068] Figure 7 FIG. 4 is a schematic diagram of the condensation principle according to an exemplary embodiment.

[0069] Figure 8 is a diagram showing the corresponding relationship between dew point and ambient temperature and humidity according to an exemplary embodiment.

[0070] Fig. 9 is a flow chart of a method according to an exemplary embodiment.

[0071] Fig.10 is a flow chart of a method according to an exemplary embodiment.

[0072] Fig.11 It is a block diagram of a device according to an exemplary embodiment.

[0073] Fig.12 It is a block diagram of a device according to an exemplary embodiment.

[0074] Fig.13 It is a block diagram of a device according to an exemplary embodiment.

[0075] Fig.14 is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0076] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0077] With the development of technology, fingerprint recognition or unlocking function has become a basic configuration of smart door locks, mobile phones, computers and other devices. In the current fingerprint recognition scheme, capacitive fingerprint recognition devices (such as capacitive fingerprint sensors) or optical fingerprint recognition devices (such as infrared fingerprint sensors) are mostly used.

[0078] Capacitive fingerprint recognition devices or optical fingerprint recognition devices need to have a stable fingerprint recognition rate under certain conditions, such as the fingerprint recognition success rate is stable under the appropriate temperature and humidity conditions. However, when the ambient temperature and humidity are below a certain value, the fingerprint recognition success rate will be greatly reduced. Similarly, if the skin on the surface of the user's finger is dry, the fingerprint recognition success rate will also be greatly reduced. Under some environmental conditions, such as a hot and dry environment, the user's finger skin is prone to dryness, and the fingerprint recognition success rate is reduced.

[0079] In order to solve the above technical problems, the present disclosure proposes a fingerprint module, including: a sensor component and a temperature adjustment unit; the sensor component and the temperature adjustment unit are sequentially stacked under the display screen of the terminal device, and the sensor component is connected to the display screen of the terminal device; the temperature adjustment unit is used to adjust the temperature according to the change of the electrical signal to change the temperature of the corresponding area of ​​the display screen. In the fingerprint module disclosed in the present disclosure, the temperature adjustment unit can achieve temperature regulation, thereby changing the temperature of the sensor component by heat conduction, and then changing the temperature of the display screen. It is adapted to high temperature and dry environmental conditions or finger conditions. By adjusting the temperature of the display screen, the humidity on the surface of the display screen can be changed, thereby improving the skin condition of the user's fingers in contact with the display screen, avoiding excessive dryness of the skin, and improving the accuracy and efficiency of fingerprint recognition.

[0080] In an exemplary embodiment, Figure 1 As shown, the fingerprint module 1 of this embodiment includes: a sensor component 11 and a temperature adjustment unit 13. Referring to the orientation of the figure, the sensor component 11 and the temperature adjustment unit 13 are stacked in sequence under the display screen 2 of the terminal device, and the sensor component 11 is connected to the display screen 2 of the terminal device. In this embodiment, the temperature adjustment unit 13 is used to adjust the temperature according to the change of the electrical signal, and achieve different temperature values ​​by changing the electrical signal. Based on the principle of heat conduction, the temperature of the corresponding area of ​​the display screen 2 is further changed.

[0081] Among them, the corresponding area of ​​the display screen 2 refers to the area on the display screen 2 corresponding to the fingerprint module 1, that is, the fingerprint recognition area on the display screen. When the user's finger touches or presses this area, the fingerprint module 1 can collect and recognize the fingerprint information of the current finger.

[0082] In this embodiment, the sensor component 11 may be, for example, a capacitive fingerprint sensor, or an optical fingerprint sensor (such as an infrared fingerprint sensor).

[0083] In an exemplary embodiment, Figure 1 As shown, the sensor assembly 11 and the display screen 2 are bonded by a thermally conductive adhesive 14, which can achieve a sealed connection between the sensor assembly 11 and the display screen 2 and effectively conduct low temperature.

[0084] In an exemplary embodiment, Figure 1 As shown, the temperature adjustment part 13 is configured as a semiconductor cooling device (Thermo Electric Cooler, TEC). The side of the temperature adjustment part 13 close to the display screen 2 is a low temperature adjustment layer, and the side of the temperature adjustment part 13 away from the display screen 2 is a high temperature adjustment layer.

[0085] Among them, TEC is made by using the Peltier effect of semiconductor materials, usually including a semiconductor couple (such as a couple composed of a P-type semiconductor and an N-type semiconductor). By adjusting the voltage or current passing through the couple, one end of the couple absorbs heat for cooling and the other end releases heat for heating. Therefore, the side of the TEC located at the cooling end of the couple is the low-temperature adjustment layer, which is used to reduce the temperature; and the side of the TEC located at the heating end of the couple is the high-temperature adjustment layer, which generates heat in order to dissipate the heat of the high-temperature adjustment layer.

[0086] In this embodiment, Figure 1 As shown, a heat dissipation structure can be provided at the high temperature adjustment layer of the TEC to effectively dissipate the heat generated by the high temperature adjustment layer. The heat dissipation structure can be provided as a plurality of heat sinks 131, for example.

[0087] In an exemplary embodiment, Figure 2As shown, the fingerprint module 1 of this embodiment further includes a conduction part 12; the conduction part 12 is arranged between the sensor assembly 11 and the temperature adjustment part 13. Among them, the conduction part 12 can be a medium with good thermal conductivity, for example, the conduction part 12 can be set as a metal conduction part. While achieving heat conduction, it also plays a role of reinforcement (supporting the fingerprint module 1). In one example, the conduction part 12 can be set as a steel sheet or copper foil.

[0088] In this embodiment, still refer to Figure 2 The temperature adjustment part 13 can set different temperatures according to different voltages, and its low temperature adjustment layer is in direct contact with the conducting part 12, so as to first cool down the conducting part 12, and then cool down the display screen 2. It is worth noting that the structural layers of the fingerprint module 1 and the fingerprint module 1 and the display screen 2 are sealed, so there is no humidity change in between, until the low temperature is conducted to the outermost surface in contact with the air and the finger, and the surface will produce condensation due to the temperature difference with the air or the finger.

[0089] In an exemplary embodiment, the present disclosure provides a terminal device, referring to Figure 1 to Figure 2 As shown, it includes a display screen 2 and the fingerprint module 1 of the above embodiment, and the fingerprint module 1 is arranged under the display screen 2. Among them, the terminal device can be, for example, a mobile phone, a laptop computer, a tablet computer, a smart door lock and other electronic devices. The display screen 2 can be, for example, an OLED display screen or an LCD display screen. It can be understood that a cover plate is usually arranged above the display screen for direct contact with human fingers.

[0090] The fingerprint module 1 and the display screen 2 can both communicate with the CPU of the terminal device. The temperature adjustment unit 13 of the fingerprint module 1 can be driven and adjusted by a driver chip (TEC-driver), and the driver chip applies different control voltages according to the control instructions of the CPU.

[0091] In an exemplary embodiment, the present disclosure provides a method for adjusting the temperature of a display screen, such as Figure 3 As shown, the following steps are included:

[0092] S110. In response to the fingerprint state of the fingerprint detected in the fingerprint recognition area on the display screen being a first state, obtain current environment information.

[0093] S120: Adjust the fingerprint recognition area to a target temperature according to current environmental information.

[0094] Among them, in step S110, the first state is used to represent the state when the humidity of the fingerprint is lower than the preset threshold. The preset threshold can be set according to the actual test structure. When the humidity of the fingerprint of the finger is lower than the preset threshold (too dry), the success rate and accuracy of fingerprint recognition are low. Therefore, when the fingerprint state is not the first state, that is, when the humidity of the fingerprint is not lower than the preset threshold, the fingerprint can be correctly recognized, and it is not necessary to obtain the current environment information, that is, the display screen control method is not run.

[0095] If the fingerprint image data indicates that the fingerprint is in the first state, the CPU of the terminal device can obtain current environmental information. The current environmental information includes the current environmental temperature and the current environmental humidity. In this embodiment, the environmental humidity refers to the relative humidity of the environment.

[0096] In one example, the CPU obtains the current environment information by, for example, interacting with the temperature measurement software and the humidity measurement software in the terminal device to obtain the current environment temperature information measured by the temperature measurement software and the current environment humidity information measured by the humidity measurement software.

[0097] In another example, the CPU may obtain the current environment information by using a temperature sensor and a humidity sensor provided inside the terminal device. In this example, the temperature sensor or humidity sensor provided inside the terminal device may be an environment temperature or humidity obtained by sensor detection and algorithm correction.

[0098] In step S120, the target temperature is the temperature at which condensation can occur on the display screen. If the temperature at which condensation can occur on the display screen is determined, the CPU of the terminal device can issue a control instruction to control the temperature regulating unit to adjust the temperature. Thus, the temperature of the fingerprint recognition area of ​​the display screen is changed to the target temperature by utilizing the principle of heat conduction. When the environment is a high temperature and dry environment, condensation will occur on the surface of the display screen at the target temperature, thereby increasing the humidity of the fingerprint recognition area. When the user's finger touches or presses the fingerprint recognition area, the humidity of the finger can be effectively improved, thereby increasing the success rate of fingerprint recognition.

[0099] In a specific scenario, such as in a hot and dry environment, the skin of the user's fingers will also be relatively dry. If fingerprint recognition is performed directly, the success rate of fingerprint recognition is low. Combined with the hardware structure of this embodiment, the fingerprint recognition area of ​​the display screen is adjusted to the target temperature through the temperature adjustment unit. Under hot and dry environmental conditions or hot and dry finger conditions, condensation can form on the display screen. The contact between the finger and the display screen can effectively humidify the finger and improve the efficiency of fingerprint recognition.

[0100] In an exemplary embodiment, Figure 4 As shown, before step S110, the method of this embodiment further includes:

[0101] S102: Acquire image data of a fingerprint detected in a fingerprint recognition area on the current display screen.

[0102] S104: In response to the image data not meeting a preset condition, determining that the fingerprint state of the fingerprint is a first state.

[0103] In step S102, this embodiment determines whether the fingerprint state is in the first state through image data obtained by the fingerprint module.

[0104] In one example, when fingerprint recognition fails, the fingerprint module collects the current fingerprint image, and compares and analyzes the image data with the preset conditions to obtain the current state of the fingerprint, and the fingerprint module transmits the analysis result to the CPU of the terminal device. In another example, when fingerprint recognition fails, the fingerprint module collects the current fingerprint image and sends the current fingerprint image to the CPU of the terminal device, and the CPU compares and analyzes the image data with the preset conditions to obtain the current state of the fingerprint.

[0105] In step S104, the preset condition can be set as the fingerprint image data when the preset threshold is met. When the fingerprint module analyzes the image data does not meet the preset condition, or the terminal device CPU analyzes the image data does not meet the preset condition, the surface fingerprint state is in the first state, and the humidity is low.

[0106] In an exemplary embodiment, Figure 5 As shown, step S120 specifically includes the following steps:

[0107] S122: Determine first temperature information according to current environment information.

[0108] S124. Determine the adjustment temperature of the temperature adjustment unit according to the first temperature information.

[0109] S126, controlling the temperature adjustment unit to adjust to the adjustment temperature, so as to adjust the fingerprint recognition area to the target temperature.

[0110] Wherein, in step S122, the first temperature information is used to represent: under the current environment, the target temperature at which the medium can generate condensation is preset.

[0111] In step S124, taking the preset medium as a display screen as an example, since the temperature of the display screen is adjusted by the temperature adjustment unit, if the target temperature corresponding to the first temperature information needs to be reached, it is necessary to determine the adjustment temperature that the temperature adjustment unit needs to reach.

[0112] In this embodiment, for example, the adjustment temperature corresponding to the first temperature information can be determined based on the first temperature information and the preset temperature loss. Due to the difference in thickness of the fingerprint module and the thickness of the display screen, there will be a certain temperature loss in the temperature adjustment part during the conduction process. Based on each different structural stacking thickness, the temperature loss value or offset in the heat conduction process can be determined, which is the preset temperature loss. After determining the target temperature that can achieve condensation of the display screen, the adjustment temperature that the temperature adjustment part needs to reach should be: the sum of the target temperature corresponding to the first temperature information and the preset temperature loss of heat conduction. Among them, the preset temperature loss can be obtained based on actual detection.

[0113] In step S126, after determining the adjustment temperature of the temperature adjustment unit, the CPU of the terminal device can control the temperature adjustment unit to adjust to the adjustment temperature by controlling the driving chip, thereby using the heat conduction principle to make the fingerprint recognition area of ​​the display screen reach the target temperature.

[0114] In an exemplary embodiment, Figure 6 As shown, step S122 specifically includes the following steps:

[0115] S1221. Obtain pre-stored first configuration information.

[0116] S1222. Determine first temperature information corresponding to the current environment information according to the current environment information and the first configuration information.

[0117] In step S1221, the first configuration information is used to characterize the correspondence between the environmental information and the condensation temperature information of the preset medium. The first configuration information may be tested and constructed before the terminal device leaves the factory.

[0118] In the process of constructing the first configuration information, you can combine Figure 7 and Figure 8 As shown, the temperature (dew point) at which the preset medium can produce condensation is related to the current ambient temperature and humidity.

[0119] like Figure 7 As shown, taking the temperature regulating unit (TEC) 13 as an example, a schematic diagram of the principle of realizing condensation of the temperature regulating unit (TEC) 13 through temperature regulation is shown. During the temperature regulation process of the temperature regulating unit (TEC) 13, one side is cooled to form a low temperature regulation layer 132 (close to the display screen in this solution), and the other side is heated to form a high temperature regulation layer 133. Figure 7It can be seen that when the environment is high temperature and high humidity, the temperature adjustment unit 13 can adjust the low temperature adjustment layer 132 to the dew point temperature under the control of the electrical signal. When the surface of the low temperature adjustment layer 132 medium with a temperature and humidity difference contacts with a high temperature and high humidity environment or an object, dew drops will be generated on the surface, that is, the water vapor in the environment is saturated and condensed on the surface of the low temperature medium by using the temperature difference and humidity difference. The high temperature adjustment layer 133 located in the low temperature area of ​​the environment will release heat, so a heat sink 131 can be set on the high temperature adjustment layer 133.

[0120] Based on this principle, in this embodiment, the temperature adjustment unit 13 conducts low temperature to the display screen through a sealed connection (the structural layers of the fingerprint module and the fingerprint module and the display screen are sealed), so there is no humidity change between the structural layers. Finally, when the display screen contacts the high-temperature dry air and the finger, condensation occurs on the surface of the display screen due to the temperature difference (the temperature difference reaches the dew point). The condensation contacts the finger and wets the fingerprint surface, improving the low recognition rate caused by dry fingerprints.

[0121] Based on the above principle, the condensation temperature must also be determined. The condensation temperature (dew point) and the ambient temperature and humidity have the following calculation formula:

[0122]

[0123] e=f×E S ;

[0124]

[0125] Among them, T d is the dew point, f is the ambient (air) humidity, t is the ambient temperature; Eo, a and b are constants, Eo = 6.11 hPa (hectopascals, unit of pressure), a = 7.5, b = 237.3.

[0126] According to the above calculation formula, when each group of ambient temperature and ambient humidity is measured, the dew point temperature corresponding to the group can be obtained. Figure 8 The corresponding relationship shown is recorded as the first configuration information. The first configuration information is stored in the CPU or memory of the terminal device.

[0127] According to the first configuration information, the higher the ambient humidity, the closer the dew point temperature is to the ambient temperature. In addition, the temperature at which the dew point is formed is always lower than the ambient temperature.

[0128] In step S1222, the CPU of the terminal device can determine the first temperature information (indicating the temperature at which a preset medium such as a display screen can produce condensation under the current environment, i.e., the dew point) according to the first configuration information when the current environment information is known. For example, the corresponding curve is first determined according to the current environment humidity, and then the dew point temperature corresponding to the curve is determined according to the current environment temperature, which is the target temperature represented by the current first temperature information.

[0129] In an exemplary embodiment, Fig. 9 As shown, step S126 may specifically include the following steps:

[0130] S1261. Determine voltage information of the temperature adjustment unit according to the adjustment temperature.

[0131] S1262, controlling the temperature adjustment unit to operate with a voltage corresponding to the voltage information.

[0132] Among them, in step S1261, the CPU of the terminal device first determines the voltage information of the temperature adjustment unit according to the adjustment temperature.

[0133] In this embodiment, Fig.10 As shown, step S1261 may specifically include the following steps: S1261-1, obtaining pre-stored second configuration information. S1261-2, determining voltage information corresponding to the adjustment temperature according to the adjustment temperature and the second configuration information.

[0134] In step S1261-1, the second configuration information is used to characterize the correspondence between the temperature information of the temperature adjustment unit and the control voltage information of the temperature adjustment unit. The second configuration information may be configured and stored before the terminal device leaves the factory.

[0135] In step S1261-2, the CPU of the terminal device can determine the voltage information that can reach the temperature adjustment of the temperature adjustment unit according to the adjustment temperature and the second configuration information, and include the voltage information when issuing a control instruction to the driver chip, so that the driver chip can apply the corresponding control voltage to the temperature adjustment unit.

[0136] In step S1262, after determining the voltage information, the CPU of the terminal device may issue a corresponding control instruction, and the driver chip of the temperature adjustment unit controls the temperature adjustment unit to adjust the temperature according to the voltage information contained in the instruction.

[0137] When the temperature adjustment unit is adjusted to the adjustment temperature, the fingerprint recognition area of ​​the display screen can reach the target temperature. Under the current environment, the fingerprint recognition area of ​​the display screen can reach the dew point, achieving the purpose of humidifying the fingerprint of the finger.

[0138] The method disclosed in the embodiment of the present disclosure can effectively improve the skin moisture of fingers in the dry environment of spring and autumn, or the skin moisture of dry fingers, thereby increasing the success rate of fingerprint unlocking of dry finger skin, speeding up the unlocking time, and improving the user experience.

[0139] In an exemplary embodiment, the present disclosure provides a display screen control device, such as Fig.11 As shown, the device of this embodiment includes a first acquisition module 110 and an adjustment module 120. The device of this embodiment is used to implement Figure 3 The display screen control method shown. The first acquisition module 110 is used to obtain current environmental information in response to the fingerprint state of the fingerprint detected in the fingerprint recognition area on the display screen being the first state; wherein the first state is used to represent the state when the humidity of the fingerprint is lower than a preset threshold, and the current environmental information includes the current environmental temperature and the current environmental humidity. The adjustment module 120 is used to adjust the fingerprint recognition area to a target temperature according to the current environmental information; wherein the target temperature is the temperature at which condensation can be generated on the display screen.

[0140] In an exemplary embodiment, Fig.12 As shown, the device of this embodiment includes: a first acquisition module 110, an adjustment module 120, a second acquisition module 130 and a determination module 140. The second acquisition module 130 is used to acquire the image data of the fingerprint detected in the fingerprint recognition area on the current display screen. The determination module 140 is used to determine that the fingerprint state of the fingerprint is the first state in response to the image data not meeting the preset condition.

[0141] In an exemplary embodiment, Fig.13 As shown, the adjustment module 120 includes: a first determination submodule 122, which is used to determine the first temperature information according to the current environment information; wherein the first temperature information is used to characterize: under the current environment, the target temperature at which the preset medium can produce condensation. A second determination submodule 124, which is used to determine the adjustment temperature of the temperature adjustment unit according to the first temperature information. A control submodule 126, which is used to control the temperature adjustment unit to adjust to the adjustment temperature, so as to adjust the fingerprint recognition area to the target temperature.

[0142] In this embodiment, the first determination submodule 122 is used to: obtain the pre-stored first configuration information; wherein the first configuration information is used to characterize the correspondence between the environmental information and the condensation temperature information of the preset medium. According to the current environmental information and the first configuration information, the first temperature information corresponding to the current environmental information is determined. The second determination submodule 124 is used to: determine the adjustment temperature corresponding to the first temperature information according to the first temperature information and the preset temperature loss. The control submodule 126 is used to: determine the voltage information of the temperature adjustment unit according to the adjustment temperature; and control the temperature adjustment unit to work with the voltage corresponding to the voltage information. The control submodule 126 is used to: obtain the pre-stored second configuration information; wherein the second configuration information is used to characterize the correspondence between the temperature information of the temperature adjustment unit and the control voltage information of the temperature adjustment unit. According to the adjustment temperature and the second configuration information, the voltage information corresponding to the adjustment temperature is determined.

[0143] like Fig.14 The present disclosure also provides an electronic device, for example, the device 500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0144] Device 500 may include one or more of the following components: a processing component 502 , a memory 504 , a power component 506 , a multimedia component 508 , an audio component 510 , an input / output (I / O) interface 512 , a sensor component 514 , and a communication component 516 .

[0145] The processing component 502 generally controls the overall operation of the device 500, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 502 may include one or more processors 520 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 502 may include one or more modules to facilitate the interaction between the processing component 502 and other components. For example, the processing component 502 may include a multimedia module to facilitate the interaction between the multimedia component 508 and the processing component 502.

[0146] The memory 504 is configured to store various types of data to support operations on the device 500. Examples of such data include instructions for any application or method operating on the device 500, contact data, phone book data, messages, pictures, videos, etc. The memory 504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0147] Power component 506 provides power to various components of device 500. Power component 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 500.

[0148] The multimedia component 508 includes a screen that provides an output interface between the device 500 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 touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 508 includes a front camera and / or a rear camera. When the device 500 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 camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0149] The audio component 510 is configured to output and / or input audio signals. For example, the audio component 510 includes a microphone (MIC), and when the device 500 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 504 or sent via the communication component 516. In some embodiments, the audio component 510 also includes a speaker for outputting audio signals.

[0150] I / O interface 512 provides an interface between processing component 502 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0151] The sensor assembly 514 includes one or more sensors for providing various aspects of status assessment for the device 500. For example, the sensor assembly 514 can detect the open / closed state of the device 500, the relative positioning of components, such as the display and keypad of the device 500, and the sensor assembly 514 can also detect the position change of the device 500 or a component of the device 500, the presence or absence of user contact with the device 500, the orientation or acceleration / deceleration of the device 500, and the temperature change of the device 500. The sensor assembly 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 514 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0152] The communication component 516 is configured to facilitate wired or wireless communication between the device 500 and other devices. The device 500 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 also includes a near field communication (NFC) module to facilitate short-range communication. 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.

[0153] In an exemplary embodiment, the device 500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described methods.

[0154] In another exemplary embodiment of the present disclosure, a non-transitory computer-readable storage medium is provided, such as a memory 504 including instructions, and the instructions can be executed by a processor 520 of a device 500 to perform the above method. For example, the computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform the above method.

[0155] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0156] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A fingerprint module, characterized in that: include: Sensor assembly and temperature regulation unit; The sensor assembly and the temperature regulating part are stacked in sequence under the display screen of the terminal device, and the sensor assembly is connected to the display screen of the terminal device; the temperature regulating part is used to adjust the temperature according to the change of the electrical signal to change the temperature of the corresponding area of ​​the display screen; the temperature regulating part is configured as a semiconductor cooling device; the side of the temperature regulating part close to the display screen is a low-temperature regulating layer, and the low-temperature regulating layer is configured to reduce the temperature of the corresponding area of ​​the display screen.

2. The fingerprint module according to claim 1, characterized in that: The sensor assembly is bonded to the display screen by means of heat-conducting adhesive.

3. The fingerprint module according to claim 1, characterized in that: The side of the temperature regulating part away from the display screen is a high temperature regulating layer.

4. The fingerprint module according to claim 3, characterized in that: The high temperature regulating layer is provided with a heat dissipation structure.

5. The fingerprint module according to claim 1, characterized in that: It also includes a conduction part; the conduction part is arranged between the sensor component and the temperature adjustment part.

6. The fingerprint module according to claim 5, characterized in that: The conductive part is configured as a metal conductive part.

7. A terminal device, characterized in that: It comprises a display screen and the fingerprint module according to any one of claims 1 to 6, wherein the fingerprint module is arranged under the display screen.

8. A display screen control method, characterized in that: include: In response to the fingerprint state of the fingerprint detected in the fingerprint recognition area on the display screen being the first state, obtaining current environmental information; wherein the first state is used to represent a state when the humidity of the fingerprint is lower than a preset threshold, and the current environmental information includes the current environmental temperature and the current environmental humidity; According to the current environmental information, the temperature of the fingerprint recognition area is lowered to a target temperature; wherein the target temperature is a temperature at which condensation can be generated on the display screen.

9. The display screen control method according to claim 8, characterized in that: The method further comprises: Get the image data of the fingerprint detected in the fingerprint recognition area on the current display screen; In response to the image data not meeting a preset condition, determining that the fingerprint state of the fingerprint is a first state.

10. The display screen control method according to claim 8, characterized in that: The step of reducing the temperature of the fingerprint recognition area to a target temperature according to the current environment information includes: Determine first temperature information according to the current environment information; wherein the first temperature information is used to represent: under the current environment, the target temperature at which the preset medium can produce condensation; determining a regulating temperature of a temperature regulating unit according to the first temperature information; The temperature adjustment unit is controlled to adjust to the adjustment temperature, so as to reduce the temperature of the fingerprint recognition area to the target temperature.

11. The display screen control method according to claim 10, characterized in that: The determining the first temperature information according to the current environment information includes: Acquire pre-stored first configuration information; wherein the first configuration information is used to characterize the correspondence between environmental information and condensation temperature information of a preset medium; The first temperature information corresponding to the current environment information is determined according to the current environment information and the first configuration information.

12. The display screen control method according to claim 10, characterized in that: The step of determining the adjustment temperature of the temperature adjustment unit according to the first temperature information includes: According to the first temperature information and the preset temperature loss, an adjustment temperature corresponding to the first temperature information is determined.

13. The display screen control method according to claim 10, characterized in that: The controlling the temperature adjustment unit to adjust to the adjustment temperature comprises: determining voltage information of the temperature regulating unit according to the regulating temperature; The temperature adjustment unit is controlled to operate according to a voltage corresponding to the voltage information.

14. The display screen control method according to claim 13, characterized in that: The step of determining voltage information of the temperature adjustment unit according to the adjustment temperature includes: Acquire pre-stored second configuration information; wherein the second configuration information is used to characterize the correspondence between the temperature information of the temperature adjustment unit and the control voltage information of the temperature adjustment unit; Voltage information corresponding to the adjustment temperature is determined according to the adjustment temperature and the second configuration information.

15. A display screen control device, characterized in that: include: A first acquisition module, configured to acquire current environmental information in response to the fingerprint state of the fingerprint detected in the fingerprint recognition area on the display screen being a first state; wherein the first state is used to represent a state when the humidity of the fingerprint is lower than a preset threshold, and the current environmental information includes a current environmental temperature and a current environmental humidity; The regulating module is used to reduce the temperature of the fingerprint recognition area to a target temperature according to the current environmental information; wherein the target temperature is a temperature at which condensation can be generated on the display screen.

16. The display screen control device according to claim 15, characterized in that: The device also includes: The second acquisition module is used to acquire the image data of the fingerprint detected in the fingerprint recognition area on the current display screen; The determination module is used to determine that the fingerprint state of the fingerprint is a first state in response to the image data not meeting a preset condition.

17. The display screen control device according to claim 15, characterized in that: The adjustment module comprises: A first determination submodule is used to determine first temperature information according to the current environment information; wherein the first temperature information is used to represent: under the current environment, a target temperature at which a preset medium can produce condensation; A second determining submodule, configured to determine a regulating temperature of a temperature regulating unit according to the first temperature information; The control submodule is used to control the temperature adjustment unit to adjust to the adjustment temperature, so as to reduce the temperature of the fingerprint recognition area to the target temperature.

18. The display screen control device according to claim 17, characterized in that: The first determining submodule is used for: Acquire pre-stored first configuration information; wherein the first configuration information is used to characterize the correspondence between environmental information and condensation temperature information of a preset medium; The first temperature information corresponding to the current environment information is determined according to the current environment information and the first configuration information.

19. The display screen control device according to claim 17, characterized in that: The second determining submodule is used for: According to the first temperature information and the preset temperature loss, an adjustment temperature corresponding to the first temperature information is determined.

20. The display screen control device according to claim 17, characterized in that: The control submodule is used for: determining voltage information of the temperature regulating unit according to the regulating temperature; The temperature adjustment unit is controlled to operate according to a voltage corresponding to the voltage information.

21. The display screen control device according to claim 20, characterized in that: The control submodule is used for: Acquire pre-stored second configuration information; wherein the second configuration information is used to characterize the correspondence between the temperature information of the temperature adjustment unit and the control voltage information of the temperature adjustment unit; Voltage information corresponding to the adjustment temperature is determined according to the adjustment temperature and the second configuration information.

22. An electronic device, characterized in that: include: processor; a memory for storing executable instructions for the processor; Wherein, the processor is configured to execute the display screen control method according to any one of claims 8 to 14.

23. A non-transitory computer-readable storage medium, characterized in that: When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the display screen control method as described in any one of claims 8 to 14.

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