A terminal and method for under-display fingerprint recognition

Abstract

This application discloses a terminal and method for under-display fingerprint recognition. The terminal includes a multi-functional integrated structure and a camera, with the multi-functional integrated structure positioned above the camera. The multi-functional integrated structure includes an infrared emitter, an infrared receiver, and a multi-functional prism, with the infrared emitter and receiver positioned on opposite sides of the multi-functional prism. The multi-functional prism includes an infrared high-reflectivity coating surface. The infrared emitter emits initial infrared light. The multi-functional prism reflects the initial infrared light through the infrared high-reflectivity coating surface onto the finger to be tested, obtaining a fingerprint-to-be-identified infrared light carrying the fingerprint information of the finger. The fingerprint-to-be-identified infrared light is then reflected through the infrared high-reflectivity coating surface to the infrared receiver. The infrared receiver identifies the fingerprint information. This application embodiment achieves low-cost under-display fingerprint recognition without requiring specific materials to manufacture the screen or a backlight hole in the screen.

Description

Technical Field

[0001] This application relates to the field of fingerprint recognition technology, and more specifically, to a terminal and method for under-display fingerprint recognition. Background Technology

[0002] In-display fingerprint unlocking technology represents a new direction in the development of mobile phone fingerprint recognition. Currently, mass-producible in-display fingerprint technologies mainly focus on fingerprint recognition in a fixed area under the screen of an Organic Light-Emitting Diode (OLED). However, this technology requires the use of an OLED screen, resulting in high costs and low durability. Furthermore, in-display fingerprint recognition technology suitable for Liquid Crystal Displays (LCDs) requires creating openings in the backlight at a fixed location on the screen and using special films to achieve infrared light penetration. This is costly, has limited applicable film materials, and has not yet achieved mass production. Summary of the Invention

[0003] In view of this, this application discloses a terminal and method for under-display fingerprint recognition, which is applicable to commonly used displays and achieves low-cost under-display fingerprint recognition.

[0004] The technical solutions provided in this application are as follows:

[0005] The first aspect of this application provides a terminal for under-display fingerprint recognition. The terminal includes a multi-functional integrated structure and a camera. The multi-functional integrated structure is disposed above the camera. The multi-functional integrated structure includes an infrared emitter, an infrared receiver, and a multi-functional prism. The infrared emitter and the infrared receiver are disposed on both sides of the multi-functional prism. The multi-functional prism includes an infrared high-reflectivity coating surface.

[0006] The infrared emitting device is used to emit initial infrared radiation;

[0007] The multifunctional prism is used to reflect the initial infrared light through the infrared high-reflectivity coating surface onto the finger to be tested, thereby obtaining an infrared light to be identified carrying the fingerprint information of the finger to be tested; and to reflect the infrared light to be identified through the infrared high-reflectivity coating surface onto the infrared receiving device.

[0008] The infrared receiving device is used to identify the fingerprint information carried by the infrared rays to be identified.

[0009] In one possible implementation, the multifunctional integrated structure further includes a first rotating shaft and a second rotating shaft, the first rotating shaft being disposed outside the infrared emitting device and the second rotating shaft being disposed outside the infrared receiving device, and the multifunctional prism body further includes a high light transmittance surface;

[0010] The first and second rotating shafts are used to rotate the multi-functional integrated structure when the camera's recording function is turned on, so that the high-transmittance surface faces the screen of the terminal.

[0011] The camera is used to receive light entering through the high-transmittance surface to achieve the camera function.

[0012] In one possible implementation, the first and second rotating shafts are also used to drive the multi-functional integrated structure to rotate when the camera function is turned off, so that the infrared high reflectivity coating surface faces the screen of the terminal.

[0013] In one possible implementation, the infrared high reflectivity coating surface is formed by the included angle of two infrared reflective surfaces in the multifunctional prism body, and the high light transmittance surface is formed by two parallel highly light transmittance surfaces in the multifunctional prism body.

[0014] In one possible implementation, the multifunctional integrated structure further includes a first upper fixing body, a first lower fixing body, a second upper fixing body, and a second lower fixing body. The first upper fixing body and the second upper fixing body are hollow barrel-shaped, and notches are provided on the upper side of the first upper fixing body and the upper side of the second upper fixing body. The first upper fixing body and the first lower fixing body are disposed inside the infrared emitting device, and the second upper fixing body and the second lower fixing body are disposed inside the infrared receiving device. The infrared emitting device is fixed to the multifunctional prism body through the first upper fixing body and the first lower fixing body, and the infrared receiving device is fixed to the multifunctional prism body through the second upper fixing body and the second lower fixing body.

[0015] In one possible implementation, the terminal further includes a proximity sensor and a fingerprint recognition area, the fingerprint recognition area being disposed above the multi-functional integrated structure;

[0016] The distance sensing sensor is used to trigger the infrared emitting device to emit initial infrared rays when it detects that the finger to be tested is located in the fingerprint recognition area.

[0017] A second aspect of this application provides a method for under-display fingerprint recognition, the method comprising:

[0018] The initial infrared light is emitted through an infrared emitting device with a multi-functional integrated structure; wherein, the multi-functional integrated structure is positioned above the camera, and the multi-functional integrated structure includes an infrared emitting device, an infrared receiving device, and a multi-functional prism body;

[0019] The initial infrared light is reflected onto the finger to be tested through the infrared high reflectivity coating surface of the multifunctional prism body, thereby obtaining the infrared light to be identified carrying the fingerprint information of the finger to be tested.

[0020] The infrared light to be identified is reflected by the infrared high-reflectivity coating surface and then onto the infrared receiving device.

[0021] The fingerprint information carried by the infrared light to be identified is then identified.

[0022] In one possible implementation, the method further includes:

[0023] When the camera's recording function is turned on, rotate the multi-functional integrated structure so that the high-transmittance surface of the multi-functional prism faces the terminal's screen.

[0024] The camera receives light entering through the highly transparent surface to achieve the camera function.

[0025] In one possible implementation, the method further includes:

[0026] When the camera function is turned off, rotate the multi-functional integrated structure so that the infrared high-reflectivity coating surface faces the screen.

[0027] In one possible implementation, the emission of initial infrared radiation via the multifunctional integrated infrared emitting device includes:

[0028] When the distance sensor detects that the finger to be tested is in the fingerprint recognition area, it emits initial infrared light through a multi-functional integrated infrared emitter.

[0029] As can be seen from the above technical solution, this application discloses a terminal and method for under-display fingerprint recognition. The terminal includes a multi-functional integrated structure and a camera, with the multi-functional integrated structure positioned above the camera. The multi-functional integrated structure includes an infrared emitting device, an infrared receiving device, and a multi-functional prism. The multi-functional prism includes an infrared high-reflectivity coating surface, and the infrared emitting device and the infrared receiving device are positioned on both sides of the multi-functional prism. The infrared emitting device emits initial infrared light. The multi-functional prism reflects the initial infrared light through the infrared high-reflectivity coating surface onto the finger to be tested, obtaining infrared light to be identified carrying the fingerprint information of the finger to be tested. The infrared light to be identified is then reflected through the infrared high-reflectivity coating surface onto the infrared receiving device. The infrared receiving device is used to identify the fingerprint information. It is evident that by setting a multi-functional prism above the camera in this application embodiment, the infrared light reflected by the infrared high-reflectivity coating surface of the multi-functional prism can be reflected onto the finger to be tested for fingerprint recognition using the camera aperture on the screen. This eliminates the need for using specific materials to manufacture the screen or for backlighting holes in the screen, thus achieving under-display fingerprint recognition at a low cost. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the published drawings without creative effort.

[0031] Figure 1 This is a schematic diagram illustrating fingerprint recognition using a terminal for under-display fingerprint recognition disclosed in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of a multi-functional integrated structure disposed in a terminal with a punch-hole screen and a multi-functional integrated structure disposed in a terminal with a waterdrop screen, as disclosed in the embodiments of this application.

[0033] Figure 3 This is a schematic diagram illustrating the use of a terminal for under-display fingerprint recognition disclosed in an embodiment of this application for taking a photograph;

[0034] Figure 4 This is a schematic diagram of a terminal for under-display fingerprint recognition with the camera function turned off, as disclosed in an embodiment of this application.

[0035] Figure 5 This is a schematic diagram of various multifunctional prism bodies disclosed in the embodiments of this application;

[0036] Figure 6This is a schematic diagram of a multifunctional integrated structure disclosed in an embodiment of this application;

[0037] Figure 7 This is a schematic diagram of a proximity sensor and a fingerprint recognition area in a terminal for under-display fingerprint recognition, as disclosed in an embodiment of this application.

[0038] Figure 8 This is a flowchart of a method for under-display fingerprint recognition disclosed in an embodiment of this application;

[0039] Figure 9 This is a flowchart illustrating a method for implementing a camera function as disclosed in an embodiment of this application;

[0040] Figure 10 This is a flowchart of a method for under-display fingerprint recognition and camera operation disclosed in an embodiment of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] Multifunctional integrated structure: 1. Camera; 2. Glass cover; 3. LCD display; 4. Backlight; 5. Proximity sensor; 6. Fingerprint recognition area; 7.

[0043] Infrared transmitting device 11, infrared receiving device 12, multifunctional prism body 13, first rotating shaft 14, second rotating shaft 15, first upper fixing body 16, first lower fixing body 17, second upper fixing body 18, second lower fixing body 19;

[0044] Infrared high reflectivity coating surface 131, high light transmittance surface 132;

[0045] Initial infrared light L, infrared light to be identified L', finger to be tested a. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] The terms “comprising,” “including,” “having,” and variations thereof, used in this specification, all mean “including but not limited to,” unless otherwise specifically emphasized. It should be noted that in the description of embodiments in this application, terms such as “first,” “second,” etc., are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order.

[0048] This application discloses a terminal and method for under-display fingerprint recognition. The terminal includes a multi-functional integrated structure and a camera, with the multi-functional integrated structure positioned above the camera. The multi-functional integrated structure includes an infrared emitter, an infrared receiver, and a multi-functional prism. The multi-functional prism includes an infrared high-reflectivity coating surface, and the infrared emitter and receiver are positioned on opposite sides of the multi-functional prism. The infrared emitter emits initial infrared light. The multi-functional prism reflects the initial infrared light through the infrared high-reflectivity coating surface onto the finger to be tested, obtaining infrared light to be identified carrying the fingerprint information of the finger. The infrared light to be identified is then reflected through the infrared high-reflectivity coating surface onto the infrared receiver. The infrared receiver is used to identify the fingerprint information. As can be seen, by setting a multi-functional prism above the camera in this application embodiment, the infrared light reflected by the infrared high-reflectivity coating surface of the multi-functional prism can be reflected onto the finger to be tested for fingerprint recognition using the aperture left on the screen for the camera. This eliminates the need for using specific materials to manufacture the screen or for backlighting holes in the screen, achieving under-display fingerprint recognition at a low cost.

[0049] See Figure 1 This is a schematic diagram illustrating fingerprint recognition using a terminal for under-display fingerprint recognition disclosed in an embodiment of this application. The terminal for under-display fingerprint recognition includes a multi-functional integrated structure 1 and a camera 2. The multi-functional integrated structure 1 is disposed above the camera 2. The multi-functional integrated structure 1 includes an infrared transmitter 11, an infrared receiver 12, and a multi-functional prism 13. The infrared transmitter 11 and the infrared receiver 12 are disposed on both sides of the multi-functional prism 13. The multi-functional prism 13 includes an infrared high-reflectivity coating surface 131.

[0050] Infrared emitting device 11, used to emit initial infrared light L;

[0051] The multifunctional prism body 13 is used to reflect the initial infrared light L through the infrared high reflectivity coating surface 131 onto the finger to be tested a, so as to obtain the infrared light to be identified L' carrying the fingerprint information of the finger to be tested; and to reflect the infrared light to be identified L' through the infrared high reflectivity coating surface 131 to the infrared receiving device 12.

[0052] The infrared receiver 12 is used to identify the fingerprint information carried by the infrared rays to be identified.

[0053] It should be noted that the terminal in this embodiment can be of various forms, such as mobile phones, tablets, computers, etc., and there is no specific limitation. It can be selected according to actual application needs. The terminal in this embodiment may also include a glass cover plate 3, a liquid crystal display 4, and a backlight 5. Among them, the glass cover plate refers to the glass cover plate at the top of the display module, which plays a protective role for the display module; the liquid crystal display (LCD) controls the rotation direction of liquid crystal molecules by changing the signal and voltage on the thin film transistor, thereby controlling whether polarized light is emitted from each pixel to achieve the display purpose; the backlight (BackLight Unit, BLU) is a light source located behind the LCD. Its light emission effect directly affects the visual effect of the liquid crystal display module. The brightness, color, power consumption, and other main indicators of the liquid crystal display are heavily dependent on the performance of the backlight. It is understood that the above is only an example illustration. The specific components included in the terminal can be set according to actual needs, such as replacing the LCD with an OLED. There is no specific limitation.

[0054] In this embodiment, considering that fingerprints are easily left on the LENS surface during fingerprint unlocking, which may affect the camera function, AF Coatting treatment is applied to the upper surface of the LENS. AF Coatting, also known as anti-fingerprint coating, is based on the principle of lotus leaves, applying a layer of nano-chemical material to the glass surface to give it strong hydrophobicity, oil resistance, and fingerprint resistance.

[0055] See Figure 2 This is a schematic diagram illustrating the multi-functional integrated structure 1 disposed within a terminal with a punch-hole screen and a multi-functional integrated structure disposed within a terminal with a waterdrop screen, as disclosed in the embodiments of this application. It is understood that the embodiments of this application are applicable to all currently available screens of various shapes, including those with holes or screens with reserved space for a front-facing camera. The multi-functional integrated structure in the embodiments of this application can also be disposed in terminals with runway screens, dual-hole screens, square-hole screens, notch screens, etc., and is not specifically limited, but can be configured according to actual needs.

[0056] As can be seen, the terminal for under-display fingerprint recognition in this embodiment includes a multi-functional integrated structure and a camera, with the multi-functional integrated structure positioned above the camera. The multi-functional integrated structure includes an infrared emitter, an infrared receiver, and a multi-functional prism. The multi-functional prism includes an infrared high-reflectivity coating surface, and the infrared emitter and receiver are positioned on either side of the multi-functional prism. The infrared emitter emits initial infrared light; the multi-functional prism reflects the initial infrared light through the infrared high-reflectivity coating surface onto the finger to be tested, obtaining infrared light carrying the fingerprint information of the finger to be identified. This infrared light is then reflected through the infrared high-reflectivity coating surface to the infrared receiver; the infrared receiver identifies the fingerprint information. By placing the multi-functional prism above the camera, the infrared light reflected by the infrared high-reflectivity coating surface of the multi-functional prism can be reflected onto the finger to be tested using the camera aperture on the screen for fingerprint recognition. This eliminates the need for specific screen materials or backlighting holes in the screen, enabling under-display fingerprint recognition at a low cost.

[0057] See Figure 3 This is a schematic diagram of a terminal for under-display fingerprint recognition disclosed in an embodiment of this application for taking a picture. In some possible implementations, in the terminal for under-display fingerprint recognition disclosed in an embodiment of this application, the multi-functional integrated structure 1 further includes a first rotating shaft 14 and a second rotating shaft 15. The first rotating shaft 14 is disposed on the outside of the infrared emitting device 11, and the second rotating shaft 15 is disposed on the outside of the infrared receiving device 12. The multi-functional prism body 13 further includes a high light transmittance surface 132.

[0058] The first pivot 14 and the second pivot 15 are used to drive the multi-functional integrated structure to rotate when the camera function of the camera 2 is turned on, so that the high-transmittance surface 132 faces the screen of the terminal.

[0059] Camera 2 is used to receive light entering through the high-transmittance surface 132 to achieve the camera function.

[0060] It should be noted that the multifunctional integrated structure 1 in this embodiment may also include an external drive device, which drives the first rotating shaft 14 and the second rotating shaft 15 to rotate back and forth, thereby driving the multifunctional integrated structure 1 to rotate. The back-and-forth rotation angle of the multifunctional integrated structure 1 can be 90°, and is not specifically limited, but can be set according to actual needs.

[0061] As can be seen, the multi-functional integrated structure in this embodiment can be rotated, so that the infrared high reflectivity coating surface or high light transmittance surface of the multi-functional prism can be oriented towards the screen of the terminal by rotation. In this way, the multifaceted nature of the multi-functional prism body is utilized. By the different reflection and penetration effects of different surfaces of the multi-functional prism body on different types of light, the fingerprint recognition unlocking function and the camera function are integrated.

[0062] See Figure 4 This is a schematic diagram of a terminal for under-display fingerprint recognition disclosed in this application after the camera function is turned off. In some possible implementations, in the terminal for under-display fingerprint recognition disclosed in this application, the first rotating shaft 14 and the second rotating shaft 15 are also used to drive the multi-functional integrated structure 1 to rotate when the camera function is turned off, so that the infrared high reflectivity coating surface 131 faces the screen of the terminal.

[0063] As can be seen, in this embodiment of the application, considering that users' need for fingerprint unlocking is higher than their need for camera in daily life, the normal state of the multi-functional integrated structure should be the fingerprint recognition state. The fingerprint recognition state is when the infrared high reflectivity coating surface of the multi-functional integrated structure faces the screen of the terminal. Therefore, when the camera function is turned off, the multi-functional integrated structure will automatically switch to the fingerprint recognition state, thereby meeting the user's daily use needs and improving the user experience.

[0064] See Figure 5 The diagram illustrates various multifunctional prism bodies disclosed in the embodiments of this application. In some possible implementations, in a terminal for under-display fingerprint recognition disclosed in the embodiments of this application, the infrared high-reflectivity coating surface 131 is formed by the included angle of two infrared-reflecting surfaces in the multifunctional prism body 13, and the high-transmittance surface 132 is formed by two parallel highly transparent surfaces in the multifunctional prism body 13.

[0065] It is understood that the multifunctional prism body in this application embodiment only needs to have two included angled surfaces that can reflect infrared light and two transparent surfaces. The included angle of the two surfaces that can reflect infrared light can be selected according to the actual situation, and there is no specific limitation. Among them, the multifunctional prism body in this application embodiment can have a variety of shapes, such as cube, cuboid, triangular prism, rhomboid prism, irregular shape, etc., and there is no specific limitation. It can be set according to actual needs.

[0066] As can be seen, the multifunctional prism body in this embodiment only needs to have two angled surfaces that can reflect infrared light and two transparent surfaces, which increases the feasibility of the solution.

[0067] See Figure 6This is a schematic diagram of a multifunctional integrated structure disclosed in an embodiment of this application. In some possible implementations, the multifunctional integrated structure 1 further includes a first upper fixing body 16, a first lower fixing body 17, a second upper fixing body 18, and a second lower fixing body 19. The first upper fixing body 16 and the second upper fixing body 18 are hollow barrel-shaped, and notches are provided on the upper side of the first upper fixing body 16 and the upper side of the second upper fixing body 18. The first upper fixing body 16 and the first lower fixing body 17 are disposed inside the infrared emitting device 11, and the second upper fixing body 18 and the second lower fixing body 19 are disposed inside the infrared receiving device 12. The infrared emitting device 11 is fixed to the multifunctional prism body 13 through the first upper fixing body 16 and the first lower fixing body 17, and the infrared receiving device 12 is fixed to the multifunctional prism body 13 through the second upper fixing body 18 and the second lower fixing body 19.

[0068] In this embodiment, the infrared emitting device 11 and the infrared receiving device 12 can be cylindrical or otherwise, and there are no specific limitations. They can be set according to actual needs.

[0069] As can be seen, in this embodiment of the application, by setting the first upper fixing body and the second upper fixing body as hollow barrels, and providing notches on the upper side of the first upper fixing body and the upper side of the second upper fixing body, it is ensured that the initial infrared rays and the infrared rays to be identified can propagate according to the designed path.

[0070] See Figure 7 This is a schematic diagram of a proximity sensor and a fingerprint recognition area in a terminal for under-display fingerprint recognition, as disclosed in an embodiment of this application. Figure 7 In the image, the left sub-image shows the finger being tested (a) not located in the fingerprint recognition area 7, while the right sub-image shows the finger being tested (a) located in the fingerprint recognition area 7. In some possible implementations, the terminal also includes a proximity sensor 6 and a fingerprint recognition area 7, with the fingerprint recognition area 7 positioned above the multi-functional integrated structure 1.

[0071] The distance sensor 6 is used to trigger the infrared emitter 11 to emit an initial infrared light L when the finger to be tested a is detected to be located in the fingerprint recognition area 7.

[0072] As can be seen, in this embodiment of the application, the fingerprint recognition function is triggered by the detection of the distance sensing sensor.

[0073] See Figure 8 This is a flowchart of a method for under-display fingerprint recognition disclosed in an embodiment of this application. The method includes:

[0074] Step S801: Emit initial infrared rays through the infrared emitting device of the multi-functional integrated structure; wherein, the multi-functional integrated structure is set above the camera, and the multi-functional integrated structure includes an infrared emitting device, an infrared receiving device, and a multi-functional prism body;

[0075] Step S802: The initial infrared light is reflected onto the finger to be tested through the infrared high reflectivity coating surface of the multifunctional prism body to obtain the infrared light to be identified carrying the fingerprint information of the finger to be tested.

[0076] Step S803: The infrared light to be identified is reflected to the infrared receiving device through the infrared high reflectivity coating surface;

[0077] Step S804: Identify the fingerprint information carried by the infrared light to be identified.

[0078] As can be seen, the method for under-display fingerprint recognition in this embodiment emits initial infrared light through a multi-functional integrated infrared emitting device. This multi-functional integrated structure is positioned above the camera and includes an infrared emitting device, an infrared receiving device, and a multi-functional prism. The initial infrared light is reflected onto the finger to be tested via the infrared high-reflectivity coating of the multi-functional prism, resulting in infrared light carrying the fingerprint information of the finger. The infrared light to be identified is then reflected back onto the infrared receiving device via the infrared high-reflectivity coating. The fingerprint information carried by the infrared light to be identified is then recognized. By placing a multi-functional prism above the camera, the infrared light reflected by the infrared high-reflectivity coating of the multi-functional prism can be reflected onto the finger to be tested via a hole in the screen used for the camera, thus enabling under-display fingerprint recognition without the need for specific screen materials or backlighting holes, resulting in low cost.

[0079] See Figure 9 This is a flowchart illustrating a method for implementing a camera function disclosed in an embodiment of this application. In some possible implementations, a method for under-display fingerprint recognition disclosed in an embodiment of this application further includes:

[0080] Step S901: When the camera's video recording function is turned on, rotate the multi-functional integrated structure so that the high-transmittance surface of the multi-functional prism faces the terminal's screen.

[0081] Step S902: Receive light entering through the high-transmittance surface to achieve the camera function.

[0082] In some possible implementations, the method for under-display fingerprint recognition disclosed in this application further includes:

[0083] Step S903: When the camera function is off, rotate the multi-functional integrated structure so that the infrared high-reflection coating surface faces the screen.

[0084] In some possible implementations, in a method for under-display fingerprint recognition disclosed in this application, the infrared high-reflectivity coating surface is composed of two angled surfaces that reflect infrared rays in a multifunctional prism body, and the high-transmittance surface is composed of two parallel surfaces with high transmittance in the multifunctional prism body.

[0085] In some possible implementations, in a method for under-display fingerprint recognition disclosed in this application embodiment, the multi-functional integrated structure further includes a first upper fixing body, a first lower fixing body, a second upper fixing body, and a second lower fixing body. The first upper fixing body and the second upper fixing body are configured as hollow barrels, and notches are provided on the upper side of the first upper fixing body and the upper side of the second upper fixing body. The first upper fixing body and the first lower fixing body are disposed inside the infrared emitting device, and the second upper fixing body and the second lower fixing body are disposed inside the infrared receiving device. The infrared emitting device is fixed to the multi-functional prism body through the first upper fixing body and the first lower fixing body, and the infrared receiving device is fixed to the multi-functional prism body through the second upper fixing body and the second lower fixing body.

[0086] In some possible implementations, in a method for under-display fingerprint recognition disclosed in this application embodiment, step S801 includes:

[0087] When the distance sensor detects that the finger to be tested is in the fingerprint recognition area, it emits initial infrared light through a multi-functional integrated infrared emitter.

[0088] See Figure 10 This is a flowchart illustrating a method for under-display fingerprint recognition and imaging disclosed in an embodiment of this application. It should be noted that... Figure 10 The integrated structure is a multi-functional integrated structure. The infrared device includes an infrared transmitter and an infrared receiver. In this method, considering that users' needs for fingerprint unlocking are higher than their needs for camera in daily life, the normal state of the integrated structure is set to the fingerprint recognition state. The fingerprint recognition state can be understood as the infrared high reflective coating surface of the integrated structure facing the terminal screen.

[0089] When the proximity sensor detects a finger in the fingerprint recognition area, indicating a user's need for fingerprint input, the processor determines that the integrated structure is in fingerprint recognition mode. It then triggers the infrared device, causing the infrared emitter to emit initial infrared light, which is reflected by the infrared high-reflectivity coating onto the finger being tested. This results in infrared light carrying the fingerprint information of the finger being tested. The infrared receiver receives this infrared light carrying the fingerprint information and obtains the fingerprint information. The received fingerprint information is then transferred to the processor for processing, which determines whether to unlock or not.

[0090] When a user activates the camera function, i.e. when the user needs to take a video, the processor will determine that the unibody structure needs to be in camera mode. Camera mode can be understood as the high-transmittance surface of the unibody structure facing the screen of the terminal. Then the unibody structure switches to camera mode and the camera turns on to realize the camera function. When the camera function is turned off, the unibody structure automatically switches to fingerprint recognition mode.

[0091] As can be seen, the embodiments of this application utilize the multifaceted nature of the multifunctional prism. By using the different faces of the multifunctional prism to reflect and transmit different types of light, different functions can be achieved: fingerprint recognition unlocking function and camera function.

[0092] It should be noted that the specific working principles of each component in the method embodiment can be found in the corresponding section of the device embodiment, and will not be repeated here.

[0093] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0094] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0095] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A terminal for under-display fingerprint recognition, characterized in that, The terminal includes a multi-functional integrated structure and a camera, with the multi-functional integrated structure positioned above the camera; the multi-functional integrated structure includes an infrared transmitter, an infrared receiver, a multi-functional prism body, a first rotating shaft, and a second rotating shaft, with the infrared transmitter and the infrared receiver positioned on both sides of the multi-functional prism body; The multifunctional prism body includes an infrared high-reflectivity coating surface and a high-transmittance surface; The infrared emitting device is used to emit initial infrared radiation; The multifunctional prism is used to reflect the initial infrared light through the infrared high-reflectivity coating surface onto the finger to be tested, thereby obtaining an infrared light to be identified carrying the fingerprint information of the finger to be tested; and to reflect the infrared light to be identified through the infrared high-reflectivity coating surface onto the infrared receiving device. The infrared receiving device is used to identify the fingerprint information carried by the infrared light to be identified; The first and second rotating shafts are used to drive the multi-functional integrated structure to rotate, so that the high-transmittance surface faces the screen of the terminal, thereby realizing the camera's recording function.

2. The terminal according to claim 1, characterized in that, The first rotating shaft is disposed on the outside of the infrared emitting device, and the second rotating shaft is disposed on the outside of the infrared receiving device; The first and second rotating shafts are specifically used to drive the multi-functional integrated structure to rotate when the camera function is turned on, so that the high-transmittance surface faces the screen of the terminal; The camera is used to receive light entering through the high-transmittance surface to achieve the camera function.

3. The terminal according to claim 2, characterized in that, The first and second rotating shafts are also used to drive the multi-functional integrated structure to rotate when the camera function is turned off, so that the infrared high reflectivity coating surface faces the screen of the terminal.

4. The terminal according to claim 2, characterized in that, The infrared high reflectivity coating surface is formed by the included angle of two infrared reflective surfaces in the multifunctional prism body, and the high light transmittance surface is formed by two parallel highly light transmittance surfaces in the multifunctional prism body.

5. The terminal according to claim 1, characterized in that, The multifunctional integrated structure further includes a first upper fixing body, a first lower fixing body, a second upper fixing body, and a second lower fixing body. The first upper fixing body and the second upper fixing body are hollow barrel-shaped, and notches are provided on the upper side of the first upper fixing body and the upper side of the second upper fixing body. The first upper fixing body and the first lower fixing body are disposed inside the infrared emitting device, and the second upper fixing body and the second lower fixing body are disposed inside the infrared receiving device. The infrared emitting device is fixed to the multifunctional prism body through the first upper fixing body and the first lower fixing body, and the infrared receiving device is fixed to the multifunctional prism body through the second upper fixing body and the second lower fixing body.

6. The terminal according to claim 1, characterized in that, The terminal also includes a proximity sensor and a fingerprint recognition area, the fingerprint recognition area being disposed above the multi-functional integrated structure; The distance sensing sensor is used to trigger the infrared emitting device to emit initial infrared rays when it detects that the finger to be tested is located in the fingerprint recognition area.

7. A method for under-display fingerprint recognition, characterized in that, The method includes: The initial infrared light is emitted through an infrared emitting device with a multi-functional integrated structure; wherein, the multi-functional integrated structure is positioned above the camera, and the multi-functional integrated structure includes an infrared emitting device, an infrared receiving device, and a multi-functional prism body; The initial infrared light is reflected onto the finger to be tested through the infrared high reflectivity coating surface of the multifunctional prism body, thereby obtaining the infrared light to be identified carrying the fingerprint information of the finger to be tested. The infrared light to be identified is reflected by the infrared high-reflectivity coating surface and then onto the infrared receiving device. The fingerprint information carried by the infrared light to be identified is then identified; The method further includes: Rotate the multi-functional integrated structure so that the high-transmittance surface of the multi-functional prism faces the screen of the terminal, thereby enabling the camera to perform its recording function.

8. The method according to claim 7, characterized in that, The rotation of the multi-functional integrated structure, so that the high-transmittance surface of the multi-functional prism faces the screen of the terminal, to realize the camera's recording function, includes: When the camera function is turned on, rotate the multi-functional integrated structure so that the high-transmittance surface faces the screen of the terminal; The camera receives light entering through the highly transparent surface to achieve the camera function.

9. The method according to claim 8, characterized in that, The method further includes: When the camera function is turned off, rotate the multi-functional integrated structure so that the infrared high-reflectivity coating surface faces the screen.

10. The method according to claim 7, characterized in that, The infrared emitting device with a multi-functional integrated structure emits initial infrared rays, including: When the distance sensor detects that the finger to be tested is in the fingerprint recognition area, it emits initial infrared light through a multi-functional integrated infrared emitter.

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