Under-screen fingerprint test calibration device of mobile terminal

Abstract

The utility model provides an under-screen fingerprint test calibration device of a mobile terminal. The under-screen fingerprint test calibration device comprises a rack, a translation driving assembly, a positioning clamp, a plurality of fingerprint test mechanisms and a controller, a guide rail is arranged on the rack, the translation driving assembly drives the positioning fixture to move along the guide rail, the fingerprint testing mechanisms are arranged on the rack, and the plurality of fingerprint testing mechanisms are sequentially arranged along the guide rail; the fingerprint testing mechanism comprises a downward pressing driving assembly and a fingerprint profiling part, and the downward pressing driving assembly is arranged on the rack; and the controller is arranged on the rack and is in signal connection with the translation driving assembly and the pressing driving assembly. The under-screen fingerprint test calibration device of the mobile terminal can automatically realize the detection of the under-screen fingerprint assembly, and multiple times of tests are carried out by the plurality of fingerprint test mechanisms, so that the test accuracy is improved, time and labor are saved, the test efficiency is improved, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, and particularly relates to an in-screen fingerprint test and calibration device for a mobile terminal. Background Art

[0002] Mobile terminals such as smart phones or tablet computers have become a necessity in people's lives. During the use of mobile terminals, in order to ensure the security of use, users usually set up to verify the user identity by fingerprint, such as collecting fingerprint images through an optical fingerprint sensor arranged under the screen to verify the user identity.

[0003] After the mobile terminal is assembled, functional tests need to be carried out on each component. At present, the screen detection of mobile terminals usually adopts manual detection, and the detection efficiency is low. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies in the prior art, and provide an in-screen fingerprint test and calibration device for a mobile terminal.

[0005] An embodiment of the utility model provides an in-screen fingerprint test and calibration device for a mobile terminal, including: a frame, a translation driving component, a positioning fixture, a plurality of fingerprint test mechanisms and a controller;

[0006] A guiding track is arranged on the frame, the translation driving component drives the positioning fixture to move along the guiding track, the fingerprint test mechanisms are arranged on the frame, and the plurality of fingerprint test mechanisms are arranged in sequence along the guiding track;

[0007] Wherein, the fingerprint test mechanism includes a downward pressing driving component and a fingerprint profiling part. The downward pressing driving component is arranged on the frame and is drivingly connected with the fingerprint profiling part for driving the fingerprint profiling part to lift above the positioning fixture. The fingerprint profiling part is used for triggering the in-screen fingerprint component of the mobile terminal;

[0008] The controller is arranged on the frame and is in signal connection with the translation driving component and the downward pressing driving component.

[0009] In some optional embodiments, the fingerprint test mechanism further includes an elastic buffer structure. The elastic buffer structure is respectively connected with the fingerprint profiling part and the frame. The downward pressing driving component is connected with a downward pressing head. After the downward pressing driving component drives the downward pressing head to descend, it presses against the elastic buffer structure, and drives the fingerprint profiling part to descend through the elastic buffer structure. At this time, the elastic buffer structure generates elastic deformation.

[0010] In some alternative embodiments, the elastic buffer structure includes a top plate, a plurality of guide posts, a plurality of guide sleeves, and an elastic member. The guide sleeves are arranged on the frame. A part of each guide post is slidably disposed within a corresponding guide sleeve. The top plate is arranged on the guide posts. The elastic member is arranged between the top plate and the frame or between the top plate and the guide sleeves. The fingerprint profiling member is connected to the bottom end of the guide post. The downward pressing drive assembly drives the downward pressing head to descend and press against the top plate, and drives the fingerprint profiling member to descend through the top plate and the guide posts until the fingerprint profiling member presses against the screen of the mobile terminal. During the descent of the top plate, the elastic member is driven to undergo elastic deformation.

[0011] In some alternative embodiments, the fingerprint testing mechanism further includes a pressure detector. The pressure detector is arranged on the frame. The downward pressing drive assembly is arranged on the pressure detector. The pressure detector is in signal connection with the controller.

[0012] In some alternative embodiments, the positioning fixture includes a fixture base and an induction assembly. A positioning groove is formed on the fixture base. The inner wall of the positioning groove is provided with protruding positioning portions. The induction assembly is arranged in the positioning groove for detecting the mobile terminal. The induction assembly is in signal connection with the controller.

[0013] In some alternative embodiments, the positioning fixture further includes a key triggering mechanism. The key triggering mechanism includes a plurality of trigger blocks and a pressing drive assembly. The trigger blocks are movably arranged on one side of the positioning groove. The pressing drive assembly is arranged on the fixture base and is in driving connection with the trigger blocks. The pressing drive assembly is in signal connection with the controller.

[0014] In some alternative embodiments, the frame includes a base and a housing. The guiding track, the loading station, and the unloading station are arranged on the base. The housing is arranged on the base and encloses a working space with the base. The guiding track sequentially extends from the loading station to the working space and the unloading station. The fingerprint testing mechanism is arranged within the working space.

[0015] In some alternative embodiments, two protective covers are arranged on the base. The two protective covers are correspondingly arranged around the loading station and the unloading station. An opening is formed at the top of each protective cover;

[0016] When the translation drive assembly drives the positioning fixture to move to the loading station or the unloading station, the positioning fixture corresponds to the position of the opening.

[0017] In some alternative embodiments, a safety grating assembly is provided on the protective cover. The grating emitted by the safety grating assembly covers the opening, and the safety grating assembly is in signal connection with the controller.

[0018] In some alternative embodiments, an inlet and an outlet are respectively provided on opposite sides of the casing. The guiding track passes through the inlet and the outlet. A transparent observation window is provided above the guiding track at the inlet. A maintenance opening and a maintenance door are further provided on the side of the casing. The maintenance door is movably arranged at the maintenance opening, and the maintenance opening communicates with the working space.

[0019] Compared with the prior art, the in-screen fingerprint test and calibration device of the mobile terminal of the present utility model can automatically detect the in-screen fingerprint component, and is tested multiple times by multiple fingerprint test mechanisms, improving the test accuracy, saving time and effort, improving the test efficiency, and having a high degree of automation.

[0020] In order to more clearly understand the present utility model, the specific embodiments of the present utility model will be described below in conjunction with the accompanying drawings. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of an in-screen fingerprint test and calibration device of a mobile terminal according to an embodiment of the present utility model;

[0022] Figure 2 It is a schematic structural diagram of an in-screen fingerprint test and calibration device of a mobile terminal according to an embodiment of the present utility model when a part of the hidden frame is hidden;

[0023] Figure 3 It is a schematic structural diagram of a fingerprint test mechanism according to an embodiment of the present utility model;

[0024] Figure 4 It is a sectional view of a fingerprint test mechanism according to an embodiment of the present utility model;

[0025] Figure 5 For Figure 4 an enlarged view of the place A shown;

[0026] Figure 6 It is a schematic structural diagram of a positioning fixture according to an embodiment of the present utility model.

[0027] Description of the Reference Numerals:

[0028] 10. Frame; 11. Guide rail; 12. Base; 13. Cabinet; 14. Protective cover; 15. Opening; 16. Safety light curtain assembly; 17. Button switch assembly; 18. Transparent observation window; 19. Maintenance door; 20. Translation drive assembly; 30. Positioning fixture; 31. Fixture base; 32. Induction assembly; 33. Positioning groove; 34. Positioning part; 35. Button trigger mechanism; 36. Trigger block; 37. Pressing drive assembly; 40. Fingerprint testing mechanism; 41. Pressing-down drive assembly; 411. Pressing-down head; 42. Fingerprint profiling part; 43. Elastic buffer structure; 44. Top plate; 45. Guide post; 46. Guide sleeve; 47. Elastic part; 48. Pressure detector; 50. Controller. Detailed implementation manners

[0029] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more. In addition, unless otherwise specified, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the drawings, and is only for the convenience of describing the present utility model 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 thus cannot be understood as a limitation to the present utility model.

[0031] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] In the description of the present utility model, the description referring to terms such as "one embodiment", "some alternative embodiments" or "some alternative examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0033] Please refer to Figure 1 , an under-screen fingerprint test and calibration device for a mobile terminal provided by an embodiment of the present utility model includes: a frame 10, a translation driving assembly 20, a positioning fixture 30, a plurality of fingerprint test mechanisms 40 and a controller 50.

[0034] Please refer to Figure 2 , a guiding track 11 is provided on the frame 10, the translation driving assembly 20 drives the positioning fixture 30 to move along the guiding track 11, the positioning fixture 30 can position the mobile terminal, the fingerprint test mechanisms 40 are arranged on the frame 10, and the plurality of fingerprint test mechanisms 40 are arranged in sequence along the guiding track 11. Among them, the fingerprint test mechanism 40 includes a pressing driving assembly 41 and a fingerprint profiling member 42, the pressing driving assembly 41 is arranged on the frame 10 and is drivingly connected to the fingerprint profiling member 42 for driving the fingerprint profiling member 42 to lift above the positioning fixture 30, and the fingerprint profiling member 42 is used to trigger the under-screen fingerprint component of the mobile terminal. The fingerprints simulated by the fingerprint profiling members 42 of the plurality of fingerprint test mechanisms 40 are different.

[0035] The controller 50 is arranged on the frame 10 and is in signal connection with the translation driving assembly 20 and the pressing driving assembly 41.

[0036] A test APP is pre-installed in the mobile terminal to detect the function of fingerprint sensing. During the test, the staff places the mobile terminal on the positioning fixture 30 with the screen facing up. The translation drive assembly 20 drives the positioning fixture 30 to reach below the first fingerprint test mechanism 40 for testing. Among them, when the positioning fixture 30 reaches below the fingerprint test mechanism 40, the downward pressure drive assembly 41 drives the fingerprint profiling member 42 to descend, so that the fingerprint profiling member 42 presses on the position of the mobile terminal screen corresponding to the under-screen fingerprint component. The test APP is used to determine whether the fingerprint sensing function of the under-screen fingerprint component is normal; the translation drive assembly 20 of the positioning fixture 30 drives the positioning fixture 30 to sequentially reach below each fingerprint test mechanism 40 for fingerprint testing, so as to perform tests through different fingerprint profiling members 42 to improve the test accuracy. The test efficiency is high, saving time and effort. After the fingerprint tests of each fingerprint test mechanism 40 are completed, the positioning fixture 30 reaches the next test / processing procedure or moves to the blanking station under the drive of the translation drive assembly 20. Then, after the mobile terminal is removed from the positioning fixture 30, the positioning fixture 30 returns to its original position again.

[0037] The specific structure of the translation drive assembly 20 can be designed according to actual needs. For example, the translation drive assembly 20 can be a lead screw drive assembly, a rotary motor translation drive assembly 20, a belt translation drive assembly 20, a cylinder translation drive assembly 20, or a linear motor translation drive assembly 20.

[0038] Please refer to Figure 3 , in some alternative embodiments, the fingerprint test mechanism 40 further includes an elastic buffer structure 43. The elastic buffer structure 43 is respectively connected to the fingerprint profiling member 42 and the frame 10. The downward pressure drive assembly 41 is connected with a downward pressure head 411. After the downward pressure drive assembly 41 drives the downward pressure head 411 to descend, it presses against the elastic buffer structure 43, and drives the fingerprint profiling member 42 to descend through the elastic buffer structure 43. The downward pressure head 411 will drive the elastic buffer structure 43 to produce elastic deformation, and the elastic buffer structure 43 provides a buffering effect to prevent the fingerprint profiling member 42 from excessively squeezing or impacting the screen of the mobile terminal and causing damage to the screen of the mobile terminal. When the downward pressure drive assembly 41 drives the downward pressure head 411 to rise and return to its original position, the elastic buffer structure 43 drives the fingerprint profiling member 42 to rise and return to its original position.

[0039] Please refer to Figure 4 and Figure 5, in some alternative embodiments, the elastic buffer structure 43 includes a top plate 44, a plurality of guide posts 45, a plurality of guide sleeves 46, and an elastic member 47. The guide sleeves 46 are disposed on the frame 10, a portion of the guide posts 45 is slidably disposed within the guide sleeves 46, the top plate 44 is disposed on the guide posts 45, and the elastic member 47 is disposed between the top plate 44 and the frame 10 or between the top plate 44 and the guide sleeves 46. The fingerprint profiling member 42 is connected to the bottom end of the guide post 45. In this embodiment, the elastic member 47 is disposed between the top plate 44 and the guide sleeves 46.

[0040] After the downward pressing drive assembly 41 drives the downward pressing head 411 to descend and press against the top plate 44, the fingerprint profiling member 42 is driven to descend through the top plate 44 and the guide posts 45. When the downward pressing head 411 abuts against the top plate 44 and the fingerprint profiling member 42 has not yet contacted the screen of the mobile terminal, the top plate 44 presses the elastic member 47 towards the guide sleeves 46, and the elastic member 47 undergoes elastic deformation. The elastic force of the elastic member 47 will provide buffering for the top plate 44, the guide posts 45, and the fingerprint profiling member 42, causing the fingerprint profiling member 42 to decelerate, so that the fingerprint profiling member 42 slowly approaches the screen of the mobile terminal. When the fingerprint profiling member 42 presses against the screen of the mobile terminal, since the speed of the fingerprint profiling member 42 has been reduced, the impact force of the fingerprint profiling member 42 on the screen of the mobile terminal is reduced, which helps to avoid damage to the screen of the mobile terminal caused by impact.

[0041] In some alternative embodiments, the fingerprint testing mechanism 40 further includes a pressure detector 48. The pressure detector 48 is disposed on the frame 10, and the downward pressing drive assembly 41 is disposed on the pressure detector 48. The pressure detector 48 is in signal connection with the downward pressing drive assembly 41. When the downward pressing drive assembly 41 presses the fingerprint profiling member 42 against the screen of the mobile terminal, the pressure detector 48 detects the downward pressure of the downward pressing drive assembly 41, and the downward pressing drive assembly 41 adjusts based on the downward pressure detected by the pressure detector 48 to maintain the downward pressure within a standard range, avoiding excessive or insufficient downward pressure from affecting the test effect or causing damage to the screen of the mobile terminal.

[0042] Please refer to Figure 6, in some alternative embodiments, the positioning fixture 30 includes a fixture base 31 and a sensing component 32. A positioning groove 33 is provided on the fixture base 31, and a protruding positioning portion 34 is provided on the inner wall of the positioning groove 33. The positioning portion 34 can press the mobile terminal tightly within the positioning groove 33. The positioning portion 34 is detachably installed on the positioning groove 33 and can adjust the distance extending into the positioning groove 33, thereby facilitating adaptation to mobile terminals of different sizes. The sensing component 32 is arranged within the positioning groove 33 for detecting the mobile terminal. The sensing component 32 is in signal connection with the translation driving component 20. When a mobile terminal is placed on the positioning fixture 30, the sensing component 32 senses the mobile terminal and then sends a detection signal to the translation driving component 20. After receiving the detection signal, the translation driving component 20 will drive the positioning fixture 30 to move to the fingerprint testing mechanism 40.

[0043] In some alternative embodiments, the positioning fixture 30 further includes a key triggering mechanism 35. The key triggering mechanism 35 includes a plurality of trigger blocks 36 and a pressing driving component 37. The trigger blocks 36 are movably arranged on one side of the positioning groove 33, and the pressing driving component 37 is arranged on the fixture base 31 and is drivingly connected to the trigger blocks 36. When it is necessary to test the key function, the pressing driving component 37 drives the trigger blocks 36 to press against the side keys of the mobile terminal, and the function of the keys is tested through the test APP of the mobile terminal. The pressing driving component 37 can drive the trigger blocks 36 to translate or rotate to achieve pressing against the side keys of the mobile terminal. In this embodiment, the pressing driving component 37 drives the trigger blocks 36 to translate. The pressing driving component 37 can adopt a lead screw driving component, a rotary motor translation driving component 20, a belt translation driving component 20, a cylinder translation driving component 20, or a linear motor translation driving component 20, etc.

[0044] In some alternative embodiments, the frame 10 includes a base 12 and a housing 13. A guiding track 11, a loading station, and an unloading station are provided on the base 12. The housing 13 is arranged on the base 12 and together with the base 12 encloses a working space. The guiding track 11 sequentially extends from the loading station to the working space and the unloading station. The fingerprint testing mechanism 40 is arranged within the working space. The housing 13 can protect the working space, preventing dust and impurities in the external environment from entering the working space and causing dust and impurities to fall on the screen of the mobile terminal, thereby affecting the testing of the fingerprint testing mechanism 40. After the positioning fixture 30 moves to the loading station, the operator places the mobile terminal on the positioning fixture 30, and then the translation driving component 20 drives the positioning fixture 30 to move into the working space. After the fingerprint testing is completed, the translation driving component 20 drives the positioning fixture 30 to move to the unloading station, and then the mobile terminal can be removed.

[0045] In some alternative embodiments, two protective covers 14 are provided on the base 12. The two protective covers 14 are arranged corresponding to the loading station and the unloading station respectively. An opening 15 is formed at the top of the protective cover 14. When the translation driving assembly 20 drives the positioning fixture 30 to move to the loading station or the unloading station, the position of the positioning fixture 30 corresponds to that of the opening 15. The protective cover 14 can prevent the hands of the staff from reaching into the translation driving assembly 20 or between the translation driving assembly 20 and the positioning fixture, resulting in injury to the staff. When the positioning fixture 30 moves to the loading station and the unloading station, the positioning fixture 30 is just located below the opening 15, so that the staff can directly put the mobile terminal into the positioning fixture 30 through the opening 15.

[0046] In some alternative embodiments, a safety light curtain assembly 16 is provided on the protective cover 14. The light curtain emitted by the safety light curtain assembly 16 covers the opening 15. When the staff puts the mobile terminal into the positioning fixture 30 through the opening 15, the safety light curtain assembly 16 is continuously triggered and sends a stop signal to the translation driving assembly 20, and the translation driving assembly 20 cannot be started. Until the hand of the staff leaves the opening 15, the safety light curtain assembly 16 is not triggered. At this time, the translation driving assembly 20 does not receive the stop signal and can be started.

[0047] In addition, a button switch assembly 17 may be provided on the protective cover 14 at the loading station. The button switch assembly 17 is signal-connected to the translation driving assembly 20 and is used to control the start and stop of the translation driving assembly 20. In this embodiment, the button switch assembly 17 includes a start button and an emergency stop button. The emergency stop button facilitates the user to stop the translation driving assembly 20 in time to avoid accidents, while the start button enables the user to start easily so that the translation driving assembly 20 drives the positioning fixture 30 to move into the working space to start the test. In this embodiment, the translation driving assembly 20 can be started to drive the positioning fixture 30 to move only when it receives the detection signal and does not receive the stop signal. An emergency stop button may also be provided on the protective cover 14 at the unloading station.

[0048] The controller 50 is signal-connected to the safety light curtain assembly 16, the button switch assembly 17, the induction assembly 32, the pressing driving assembly 37 and the pressure detector 48 respectively. The stop signal emitted by the safety light curtain assembly 16 is received by the controller 50 and then sent by the controller 50 to the translation driving assembly 20 to realize the control of the translation driving assembly 20. The signal emitted by the pressure detector 48 is received by the controller 50 and then sent by the controller 50 to the pressing-down driving assembly 41 to realize the control of the pressing-down driving assembly 41 to apply an appropriate pressure to the mobile terminal. The signal emitted by the induction assembly 32 is received by the controller 50 and then sent by the controller 50 to the translation driving assembly 20 to realize the control of the translation driving assembly 20. The controller 50 can control the operation of the pressing driving assembly 37.

[0049] In this embodiment, the signal connection manner between each component can be realized by wired connection or wireless connection.

[0050] In some alternative embodiments, an inlet and an outlet are respectively arranged on opposite sides of the housing 13, the guiding track 11 passes through the inlet and the outlet, a transparent observation window 18 located above the guiding track 11 is arranged at the inlet, and the transparent observation window 18 facilitates the staff to observe the fingerprint testing process in the working space. A maintenance opening and a maintenance door 19 are further arranged on the side of the housing 13, the maintenance door 19 is movably arranged at the maintenance opening, the maintenance opening is communicated with the working space, and the maintenance opening facilitates the staff to perform maintenance on the components in the working space.

[0051] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fingerprint test and calibration device under the screen of a mobile terminal, characterized in that: include: Rack, translation drive assembly, positioning fixture, multiple fingerprint testing mechanisms and controller; The frame is provided with a guide track, the translation drive assembly drives the positioning fixture to move along the guide track, the fingerprint testing mechanism is provided on the frame, and a plurality of the fingerprint testing mechanisms are arranged in sequence along the guide track; The fingerprint testing mechanism includes a downward pressing driving component and a fingerprint profiling member, wherein the downward pressing driving component is arranged on the frame and is drivingly connected to the fingerprint profiling member, and is used to drive the fingerprint profiling member to rise and fall above the positioning fixture, and the fingerprint profiling member is used to trigger the under-screen fingerprint component of the mobile terminal; The controller is arranged on the frame and is signal-connected with the translation drive assembly and the downward pressing drive assembly.

2. The under-screen fingerprint test and calibration device for a mobile terminal according to claim 1, characterized in that: The fingerprint testing mechanism also includes an elastic buffer structure, which is respectively connected to the fingerprint profiling member and the frame. The downward pressing drive assembly is connected to a downward pressing head. The downward pressing drive assembly drives the downward pressing head to descend and then press against the elastic buffer structure, and drives the fingerprint profiling member to descend through the elastic buffer structure. At this time, the elastic buffer structure generates elastic deformation.

3. The under-screen fingerprint test and calibration device for a mobile terminal according to claim 2, characterized in that: The elastic buffer structure includes a top plate, a plurality of guide pillars, a plurality of guide sleeves and an elastic member, wherein the guide sleeve is arranged on the frame, and a portion of the guide pillar is slidably arranged in the guide sleeve, the top plate is arranged on the guide pillar, and the elastic member is arranged between the top plate and the frame or between the top plate and the guide sleeve, and the fingerprint profiling member is connected to the bottom end of the guide pillar, and the downward pressure driving assembly drives the downward pressure head to descend and press against the top plate, and drives the fingerprint profiling member to descend through the top plate and the guide pillar until the fingerprint profiling member presses against the screen of the mobile terminal, and the top plate drives the elastic member to produce elastic deformation during the descending process.

4. The under-screen fingerprint test and calibration device for a mobile terminal according to claim 1, characterized in that: The fingerprint testing mechanism further comprises a pressure detector, which is arranged on the frame, the downward pressing driving assembly is arranged on the pressure detector, and the pressure detector is connected to the controller signal.

5. The under-screen fingerprint test and calibration device for a mobile terminal according to any one of claims 1 to 4, characterized in that: The positioning fixture includes a fixture seat and a sensing component. The fixture seat is provided with a positioning groove, and the inner wall of the positioning groove is provided with a protruding positioning portion. The sensing component is arranged in the positioning groove for detecting the mobile terminal, and the sensing component is connected to the controller signal.

6. The under-screen fingerprint test and calibration device for a mobile terminal according to claim 5, characterized in that: The positioning fixture also includes a button trigger mechanism, which includes a plurality of trigger blocks and a press-drive assembly. The trigger block is movably arranged on one side of the positioning groove. The press-drive assembly is arranged on the fixture seat and is drive-connected to the trigger block. The press-drive assembly is signal-connected to the controller.

7. The under-screen fingerprint test and calibration device for a mobile terminal according to any one of claims 1 to 4, characterized in that: The frame includes a base and a casing, the base is provided with the guide rail, the loading station and the unloading station, the casing is arranged on the base and forms a working space around the base, the guide rail extends from the loading station to the working space and the unloading station in sequence, and the fingerprint testing mechanism is arranged in the working space.

8. The under-screen fingerprint test and calibration device for a mobile terminal according to claim 7, characterized in that: Two protective covers are provided on the base, and the two protective covers are arranged around the loading station and the unloading station respectively, and an opening is formed on the top of the protective cover; When the translation drive assembly drives the positioning fixture to move to the loading station or the unloading station, the positioning fixture corresponds to the position of the opening.

9. The under-screen fingerprint test and calibration device for a mobile terminal according to claim 8, characterized in that: A safety grating assembly is arranged on the protective cover, and a grating emitted by the safety grating assembly covers the opening. The safety grating assembly is connected to the controller signal.

10. The under-screen fingerprint test and calibration device for a mobile terminal according to claim 7, characterized in that: An inlet and an outlet are respectively provided on opposite sides of the casing, the guide track passes through the inlet and the outlet, a transparent observation window located above the guide track is provided at the inlet, an inspection port and an inspection door are also provided on the side of the casing, the inspection door is movably provided at the inspection port, and the inspection port is connected to the working space.

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