Under-screen fingerprint recognition system, backlight module, light source component and display screen

Abstract

The present disclosure relates to an in-screen fingerprint recognition system, a backlight module, a light source component, and a display screen. The display screen includes an in-screen fingerprint recognition system, a backlight module, and a display panel, and the backlight module is disposed below the display panel. The in-screen fingerprint recognition system includes a fingerprint light source for providing fingerprint recognition light and a fingerprint sensor for receiving the fingerprint recognition light, and the backlight module includes a backlight light source for providing backlight light. The fingerprint light source and the backlight light source are integrally arranged and the fingerprint light source is located above the backlight light source, and the fingerprint sensor is disposed below the backlight module. The fingerprint recognition light emitted from the fingerprint light source passes through the display panel and is transmitted to the finger, and after being reflected by the finger, it passes through the display panel and the backlight module again and is transmitted to the fingerprint sensor. By integrally arranging the fingerprint light source and the backlight light source and setting the fingerprint light source above the backlight light source, the present disclosure enables the fingerprint light source not to occupy the lateral space of the product, and can effectively reduce the chin size of the product.

Description

Technical Field

[0001] The present disclosure relates to the field of recognition technologies, and particularly to an in-screen fingerprint recognition system, a backlight module, a light source assembly, and a display screen. Background Art

[0002] With the development of electronic technologies, the display screens of electronic devices are gradually evolving towards full-screen displays, with an increasingly high screen-to-body ratio. This has made it impossible to place the current mainstream capacitive fingerprint modules, and in-screen optical fingerprints have emerged as a result.

[0003] Currently, for Organic Light-Emitting Diode (OLED) display screens, the application of in-screen optical fingerprint recognition solutions has become increasingly common. The in-screen optical fingerprint solution for OLED display screens detects fingerprints by utilizing the light transmissibility of the OLED display screen itself and the light of the screen itself irradiating the finger.

[0004] However, for Liquid Crystal Display (LCD), the fingerprint light source is usually set on the side of the display panel of a mobile terminal, increasing the chin size of electronic devices such as mobile terminals and affecting the effective display area of the display screen of the mobile terminal. Summary of the Invention

[0005] The present disclosure provides an in-screen fingerprint recognition system, a backlight module, a light source assembly, a display screen, and an electronic device, which can effectively reduce the chin size of the electronic device.

[0006] To achieve the above object, the technical solutions adopted in the present disclosure are as follows:

[0007] According to a first aspect of an embodiment of the present disclosure, a display screen is provided, including an in-screen fingerprint recognition system, a backlight module, and a display panel, wherein the backlight module is disposed below the display panel;

[0008] The in-screen fingerprint recognition system includes a fingerprint light source for providing fingerprint recognition light and a fingerprint sensor for receiving the fingerprint recognition light, and the backlight module includes a backlight light source for providing backlight light;

[0009] Wherein, the fingerprint light source and the backlight light source are integrally arranged and located above the backlight light source, the fingerprint sensor is disposed below the backlight module, and the fingerprint recognition light emitted from the fingerprint light source passes through the display panel and is transmitted to the finger, and after being reflected by the finger, it passes through the display panel and the backlight module again and is transmitted to the fingerprint sensor.

[0010] Optionally, the display screen further includes a first bracket and a second bracket which are integrally provided. The integrally provided first bracket and second bracket are fixedly provided below the display panel. The first bracket is located below the second bracket. The backlight source is provided in the first bracket, and the fingerprint light source is provided in the second bracket.

[0011] Optionally, a first opening is provided in a side portion of the first bracket, and a second opening is provided at a top portion of the second bracket.

[0012] Optionally, the display panel includes a flexible circuit board which is electrically connected to the fingerprint sensor. A first metal trace is provided on the flexible circuit board, and a first light avoidance area is formed at a position corresponding to the second opening.

[0013] Optionally, the display panel includes a thin film transistor (TFT) substrate which is electrically connected to the flexible circuit board. A second metal trace is provided on the TFT substrate, and a second light avoidance area is formed at a position corresponding to the second opening.

[0014] Optionally, the wavelength range of the fingerprint recognition light emitted by the fingerprint light source is different from the wavelength range of the backlight light emitted by the backlight source.

[0015] Optionally, the fingerprint light source is an infrared light source, and the backlight source is a white light source.

[0016] Optionally, the backlight module further includes a reflective layer which is provided on a side of the backlight source. The reflective layer can reflect the backlight light and allow the fingerprint recognition light to pass through.

[0017] Optionally, the backlight module further includes a housing portion. The backlight source and the reflective layer are provided in the housing portion. A through hole for passing the fingerprint recognition light is formed in the housing portion, and the fingerprint sensor is provided below the housing portion and corresponds to the position of the through hole.

[0018] Optionally, an absorption coating for absorbing the fingerprint recognition light is provided on an inner surface of the housing portion.

[0019] According to a second aspect of the embodiments of the present disclosure, there is provided an electronic device, including a device body and the display screen as described in any one of the above embodiments. The display screen is assembled on the device body.

[0020] According to a third aspect of the embodiments of the present disclosure, there is provided an in-screen fingerprint recognition system which is applied to a display screen having a backlight module. The backlight module includes a backlight source for providing backlight light. The in-screen fingerprint recognition system includes:

[0021] A fingerprint light source for providing fingerprint recognition light, which is integrally provided with the backlight light source and located above the backlight light source;

[0022] A fingerprint sensor for receiving fingerprint recognition light, which is arranged below the backlight module.

[0023] According to the fourth aspect of the embodiments of the present disclosure, a backlight module is provided, which is applied to a display screen with an in-screen fingerprint recognition system. The in-screen fingerprint recognition system includes a fingerprint light source for providing fingerprint recognition light. The backlight module includes:

[0024] A backlight light source for providing backlight light, which is integrally provided with the fingerprint light source and located below the fingerprint light source;

[0025] A reflective layer, which is arranged on the side of the backlight light source and can reflect the backlight light and allow the fingerprint recognition light to pass through.

[0026] According to the fifth aspect of the embodiments of the present disclosure, a light source assembly is provided, which is applied to a display screen with an in-screen fingerprint recognition system. The light source assembly includes a fingerprint light source for providing fingerprint recognition light, a backlight light source for providing backlight light, and a first bracket and a second bracket which are integrally arranged. The backlight light source is arranged in the first bracket, and the fingerprint light source is arranged in the second bracket.

[0027] Optionally, a first opening is provided on the side of the first bracket, and a second opening is provided on the top of the second bracket.

[0028] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: By integrally arranging the fingerprint light source and the backlight light source and arranging the fingerprint light source above the backlight light source, the present disclosure enables the fingerprint light source not to occupy the lateral space of the product, and can effectively reduce the chin size of the product.

[0029] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a display screen shown in an exemplary embodiment of the present disclosure.

[0031] Figure 2 is a schematic structural diagram of a backlight module of a display screen shown in an exemplary embodiment of the present disclosure.

[0032] Figure 3 is Figure 1 a partial enlarged schematic diagram of part A in

[0033] Figure 4 It is a schematic structural diagram of an electronic device shown in an exemplary embodiment of the present disclosure. Detailed implementation manners

[0034] The present disclosure will be described in detail below in conjunction with the specific implementation manners shown in the accompanying drawings. However, these implementation manners do not limit the present disclosure, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these implementation manners is included in the protection scope of the present disclosure.

[0035] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0036] The present disclosure provides an in-screen fingerprint recognition system, a backlight module, a light source component, a display screen, and an electronic device, which can effectively reduce the chin size of the electronic device. Below, in conjunction with the accompanying drawings, the in-screen fingerprint recognition system, the backlight module, the light source component, the display screen, and the electronic device of the present disclosure will be described in detail. Without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0037] See Figure 1 As shown, an embodiment of the present disclosure provides a display screen 10, which includes an in-screen fingerprint recognition system, a backlight module 100, and a display panel 200. It can be understood that the display screen 10 of the present disclosure can refer to an LCD liquid crystal display screen. The display screen 10 of the present disclosure can be applied to any electronic device with an in-screen fingerprint recognition function of an LCD display screen, such as a smart phone, a laptop computer, a wearable device, a household appliance device, etc.

[0038] Among them, the backlight module 100 is disposed below the display panel 200, and the backlight module 100 includes a backlight source 101 for providing backlight light. The backlight module 100 is mainly used to provide sufficient and uniform backlight for the display panel 200, and the display panel 200 can modulate the backlight as needed to display different images. Therefore, under the illumination of the backlight light emitted by the backlight source 101 of the backlight module 100, the display panel 200 can achieve the display function.

[0039] The in-screen fingerprint recognition system includes a fingerprint light source 300 for providing fingerprint recognition light and a fingerprint sensor 301 for receiving the fingerprint recognition light. The fingerprint light source 300 is integrally provided with the backlight source 101 and is located above the backlight source 101, and the fingerprint sensor 301 is provided below the backlight module 100.

[0040] The process of fingerprint recognition by the in-screen fingerprint recognition system is as follows: When the user presses a finger on the display panel 200, the fingerprint recognition light emitted from the fingerprint light source 300 passes through the display panel 200 and is transmitted to the finger. After internal conduction in the finger, a part of the fingerprint recognition light diffuses out at the fingerprint pattern of the finger pulp. After being reflected by the finger, it passes through the display panel 200 and the backlight module 100 again and is transmitted to the fingerprint sensor 301 to form an image of valleys and ridges. The fingerprint sensor 301 generates fingerprint image data for fingerprint recognition according to the received fingerprint recognition light carrying fingerprint information. The propagation path of the fingerprint recognition light is as Figure 1 shown by the arrow direction in

[0041] Optionally, the fingerprint sensor 301 can be referred to as an optical sensor, an image sensor, an optical fingerprint sensor, an optical sensor, or a fingerprint detection sensor, etc. The in-screen fingerprint recognition system may further include a lens structure 302 provided above the fingerprint sensor 301. The lens structure 302 can better focus the fingerprint recognition light that passes through the display panel 200 and the backlight module 100 after being reflected by the finger onto the fingerprint sensor 301, improving the accuracy of fingerprint recognition.

[0042] For the display screen 10 of the present disclosure, by integrally providing the fingerprint light source 300 and the backlight source 101 to form a dual-crystal structure and arranging the fingerprint light source 300 above the backlight source 101, the fingerprint light source 300 does not occupy the lateral space of the product, can effectively reduce the chin size of the electronic device, and thus can increase the screen-to-body ratio of the electronic device and achieve a full-screen display.

[0043] In some alternative embodiments, the display panel 200 may include a cover plate 201. The cover plate 201 is disposed on the upper surface of the display panel 200, which can protect the display panel 200, and the cover plate 201 will not damage the fingerprint recognition light carrying fingerprint information. Optionally, the cover plate 201 may be a glass cover plate, which is mainly used to protect the display panel 200 and does not affect the display effect. When the user presses a finger on the cover plate 201, the fingerprint recognition light emitted from the fingerprint light source 300 passes through the display panel 200 and the cover plate 201 and then is transmitted to the finger. After being reflected by the finger, it passes through the cover plate 201, the display panel 200, and the backlight module 100 and is transmitted to the fingerprint sensor 301. The fingerprint sensor 301 generates fingerprint image data for fingerprint recognition according to the received fingerprint recognition light carrying fingerprint information.

[0044] In some alternative embodiments, to ensure the accuracy of fingerprint recognition, the fingerprint recognition light emitted by the fingerprint light source 300 should be different from the backlight emitted by the backlight source 101. That is, the wavelength range of the fingerprint recognition light emitted by the fingerprint light source 300 is different from the wavelength range of the backlight emitted by the backlight source 101. The wavelength ranges of the fingerprint recognition light emitted by the fingerprint light source 300 and the backlight emitted by the backlight source 101 can be specifically set according to needs. For example, if the wavelength range of the light emitted by the backlight source 101 is the wavelength range of visible light, then the wavelength range of the light emitted by the fingerprint light source 300 is the wavelength range of invisible light.

[0045] In this embodiment, the wavelength range of the fingerprint recognition light emitted by the fingerprint light source 300 is the infrared light wavelength range, and the wavelength range of the backlight emitted by the backlight source 101 is the visible light wavelength range. That is, the fingerprint light source 300 is an infrared light source, and the backlight source 101 is a white light source. Such an infrared light source may be, for example, an infrared LED light source, an infrared vertical cavity surface emitting laser (abbreviated as VCSEL), an infrared laser diode, etc. Of course, in other embodiments, the wavelength range of the fingerprint recognition light emitted by the fingerprint light source 300 may also be the ultraviolet light wavelength range, etc. Setting the fingerprint light source 300 as an infrared light source can avoid the interference of the fingerprint recognition light on the backlight for display, ensuring the display effect of the display panel. At the same time, it also avoids the interference of the backlight on the fingerprint recognition light, effectively ensuring the accuracy of fingerprint detection.

[0046] See Figure 2 and Figure 3As shown, in some alternative embodiments, the backlight module 100 includes a backlight source 101 for providing backlight, a reflective layer 102, a light guide portion 103, a diffusion layer 104, and a brightness enhancement layer 105. The light guide portion 103 is disposed above the reflective layer 102, the diffusion layer 104 is disposed above the light guide portion 103, and the brightness enhancement layer 105 is disposed above the diffusion layer 104. The backlight source 101 is disposed on the side of the light guide portion 103 and the reflective layer 102, and is used to reflect the backlight emitted by the backlight source 101 through the light guide portion 103 and then successively pass through the diffusion layer 104 and the brightness enhancement layer 105 and enter the display panel 200. The propagation path of the backlight is as Figure 2 shown by the arrow direction in

[0047] The reflective layer 102 is disposed below the light guide portion 103, and can reflect the light leakage of each layer of the backlight module 100 towards the light-emitting surface of the backlight module 100, improving the efficiency of the backlight module 100 and enhancing the brightness. The light reflected back into the light guide portion 103 can directly pass through the light guide portion 103 and exit from its front surface, or can exit from the front surface of the light guide portion 103 after being scattered by total reflection and the like within the light guide portion 103. According to different requirements, the light guide portion 103 can include a light guide plate or a light guide film, etc., and the present disclosure does not limit this. In this embodiment, taking the light guide portion 103 including a light guide plate as an example, it can be made of optical-grade acrylic or PC material, so that the light guide portion 103 has a very high reflectivity and does not absorb light.

[0048] The backlight module 100 may further include a first bracket 107 and a second bracket 108 that are integrally provided. The integrally provided first bracket 107 and second bracket 108 are fixedly disposed below the display panel 200. The first bracket 107 and the second bracket 108 can be two separate components fixedly connected to each other or integrally formed. The first bracket 107 is located below the second bracket 108. The backlight source 101 is disposed within the first bracket 107, and the fingerprint light source is disposed within the second bracket 108. By disposing the backlight source 101 and the fingerprint light source 300 within the integrally provided first bracket 107 and second bracket 108, a dual-crystal structure in which the backlight source 101 and the fingerprint light source 300 are integrally provided is formed. Optionally, the integrally provided first bracket 107 and second bracket 108 are fixedly disposed on the side of the light guide portion 103 and the diffusion layer 104 and are located below the display panel 200.

[0049] A first opening 109 is provided on the side of the first bracket 107, and a second opening 110 is provided on the top of the second bracket 108. It is understood that the first opening 109 is oriented toward the light guide 103, achieving side-emitting light, which more conveniently directs the backlight light emitted by the backlight source 101 toward the light guide 103, where it is reflected from the diffusion layer 104 and the light-enhancing layer 105 and incident on the display panel 200. The second opening is oriented toward the display panel 200, and it is understood that the fingerprint light source 300 is oriented away from the backlight source 101, achieving top-emitting light, which more conveniently directs the fingerprint recognition light emitted by the fingerprint light source 300 toward the display panel 200.

[0050] In order to ensure that the fingerprint recognition light emitted by the fingerprint light source 300 can pass through the backlight module 100, the reflective layer 102, the light guide portion 103, the diffusion layer 104 and the light-enhancing layer 105 of the backlight module 100 can all be made of film materials that can transmit infrared light. In this way, the reflective layer 102 can allow the fingerprint recognition light to pass through and reflect the backlight light toward the light guide portion 103. In turn, the backlight module 100 can pass the fingerprint recognition light emitted by the fingerprint light source 300. In this way, it is ensured that the backlight light emitted by the backlight light source 101 will not pass through the backlight module 100 and interfere with the fingerprint recognition light, and it can also ensure that the fingerprint recognition light emitted by the fingerprint light source 300 can pass through the backlight module 100, so as to ensure that the fingerprint sensor 301 can receive the fingerprint recognition light and thus does not affect the accuracy of fingerprint recognition.

[0051] The diffusion layer 104 is mainly used to diffuse the backlight, making it uniform and atomized, thereby making the light intensity more uniform at all locations on the light-emitting surface of the backlight module 100. In order to prevent the diffusion layer 104 from diffusing the fingerprint recognition light carrying fingerprint information and causing distortion, the diffusion layer 104 can be made of a material or structure that has a diffusion degree of at least part of the fingerprint recognition light carrying fingerprint information that is less than or equal to a set threshold. In this way, the backlight module 100 can not only meet the use requirements of the display screen and provide backlight for the display screen, but also ensure that the fingerprint recognition light carrying fingerprint recognition information will not cause serious distortion when passing through the backlight module 100, thereby ensuring the recognition accuracy during fingerprint recognition.

[0052] The backlight module 100 may further include a housing portion 106. The backlight light source 101, the reflective layer 102, the light guide portion 103, the diffusion layer 104, and the brightness enhancement layer 105 of the backlight module 100 are all disposed within the housing portion 106, which can protect the various components of the backlight module 100. It can be understood that the fingerprint light source 300 and the backlight light source 101 are of a dual-crystal structure integrated together, so the fingerprint light source 300 is also disposed within the housing portion 106. A through hole is formed in the housing portion 106 for the fingerprint recognition light emitted by the fingerprint light source 300 to pass through. The fingerprint sensor 301 is disposed below the housing portion 106 and corresponds to the position of the through hole. Through the above arrangement, the fingerprint recognition light passes through the housing portion 106 and is received by the fingerprint sensor 301, so that the fingerprint recognition light can pass through the backlight module 100, ensuring the accuracy of fingerprint recognition. Of course, in other examples, the backlight module 100 may also be a structure without the housing portion 106.

[0053] An absorption coating for absorbing the fingerprint recognition light may be provided on the inner surface of the housing portion 106. In this embodiment, taking the fingerprint recognition light as infrared light as an example, the inner surface of the housing portion 106 is treated with an infrared absorption coating to form an absorption coating capable of absorbing infrared light, which can prevent environmental noise caused by repeated reflection of infrared light.

[0054] When the user presses a finger on the display panel 200, the fingerprint recognition light emitted from the fingerprint light source 300 passes through the display panel 200 and is transmitted to the finger. After being conducted inside the finger, a part of the fingerprint recognition light diffuses out at the fingerprint pattern of the finger pad, and after being reflected by the finger, it passes through the display panel 200, the brightness enhancement layer 105, the diffusion layer 104, and the reflective layer 102 of the backlight module 100 and is then transmitted to the fingerprint sensor 301.

[0055] Combined Figure 2 and Figure 3 as shown Figure 3 as shown in Figure 1The partial enlarged schematic diagram at position A in the figure can be understood as a schematic diagram of the internal structure of the end part of the display screen 10. The display panel 200 includes a first polarizer 202, a TFT (Thin Film Transistor) substrate 203, a color filter substrate (Color Filter, abbreviated as CF) 204, and a second polarizer 205. Among them, the TFT substrate 203 and the color filter substrate 204 are located between the first polarizer 202 and the second polarizer 205. The first polarizer 202 is located on the side close to the backlight module 100, and the second polarizer 20 is located on the side far from the backlight module 100. The TFT substrate 203 is located below the color filter substrate 204, and a sealant layer 206 can be provided between the TFT substrate 203 and the color filter substrate 204. A light-shielding tape 207 can be provided between the first polarizer 202 and the light enhancement layer 105 of the backlight module 100. An optical transparent adhesive 208 can be provided between the cover plate 201 and the second polarizer 205, and they are fixed to each other through the optical transparent adhesive 208.

[0056] When the user presses a finger on the display panel 200, the fingerprint recognition light emitted from the fingerprint light source 300 passes through the second polarizer 205, the color filter substrate 204, the TFT substrate 203, and the first polarizer 202 of the display panel 200 and then is transmitted to the finger. After being conducted inside the finger, a part of the fingerprint recognition light diffuses at the fingerprint pattern of the finger pad. After being reflected by the finger, it passes through the first polarizer 202, the TFT substrate 203, the color filter substrate 204, and the second polarizer 205 of the display panel 200, as well as the reflection layer 102, the light guide part 103, the diffusion layer 104, and the light enhancement layer 105 of the backlight module 100, and then is transmitted to the fingerprint sensor 301.

[0057] It can be understood that in order to achieve the side - emitting function of the backlight source 101, the dual - crystal structure formed by integrating the backlight source 101 and the fingerprint light source 300 is located at the end of the display screen 10. The display panel 200 may further include a flexible circuit board 209 (Flexible Printed Circuit, abbreviated as FPC). A part of the flexible circuit board 209 is in the direction of the housing part 106 of the backlight module 100, and another part of the flexible circuit board 209 is bent and electrically connected to the thin - film transistor tft substrate 203. The fingerprint sensor 301 may be disposed below the flexible circuit board 209 and electrically connected to the flexible circuit board 209. Both the backlight source 101 and the fingerprint light source 300 can be electrically connected to the flexible circuit board 209. The flexible circuit board 209 can supply power to the backlight source 101, the fingerprint light source 300, the fingerprint sensor 301, and the thin - film transistor tft substrate 203 and apply corresponding control instructions, so as to ensure that the display screen 10 can realize the display function and the fingerprint recognition function.

[0058] Among them, for the thin - film transistor tft substrate 203 and the flexible circuit board 209 to achieve the functions of electrical connection and conduction, the flexible circuit board 209 is provided with a first metal trace (which can refer to a gold finger) for transmitting signals, and the thin - film transistor tft substrate 203 is provided with a second metal trace for transmitting signals. Since the infrared transmittance of the metal trace part is relatively low, it is not conducive to the propagation of fingerprint recognition light. Therefore, a first light - avoiding area is formed at the position of the first metal trace corresponding to the second opening 110, and a second light - avoiding area is formed at the position of the second metal trace corresponding to the second opening 110, so as to avoid the fingerprint recognition light emitted by the fingerprint light source 300, enabling the fingerprint recognition light to pass through the display panel 200 smoothly, thus ensuring the accuracy of fingerprint recognition.

[0059] See Figure 4 As shown, the embodiments of the present disclosure further provide an electronic device 20, including a device body 30 and a display screen 10, and the display screen 10 is assembled to the device body 30. It should be noted that in the above - mentioned embodiments and implementation manners, the description of the display screen also applies to the electronic device 20 of the present disclosure. The electronic device 20 may refer to a smart phone, a laptop computer, a wearable device, a household appliance device, etc.

[0060] In the electronic device 20 of the present disclosure, by integrating the fingerprint light source 300 and the backlight source 101 of the display screen 10 to form a dual - crystal structure, and setting the fingerprint light source 300 above the backlight source 101, the fingerprint light source 300 does not occupy the horizontal space of the product, which can effectively reduce the chin size of the electronic device, thereby improving the screen - to - body ratio of the electronic device and realizing a full - screen.

[0061] Embodiments of the present disclosure also provide an in-screen fingerprint recognition system, which is applied to a display screen with a backlight module. The in-screen fingerprint recognition system includes a fingerprint light source for providing fingerprint recognition light and a fingerprint sensor for receiving the fingerprint recognition light. The fingerprint light source is integrally provided with the backlight source and is located above the backlight source, and the fingerprint sensor is provided below the backlight module. It should be noted that the in-screen fingerprint recognition system proposed in the embodiments of the present disclosure may refer to the in-screen fingerprint recognition system of the display screen 10 described in the above embodiments and implementations.

[0062] Embodiments of the present disclosure also provide a backlight module, which is applied to a display screen with an in-screen fingerprint recognition system. The backlight module includes a backlight source for providing backlight light and a reflection layer. The backlight source is integrally provided with the fingerprint light source and is located below the fingerprint light source. The reflection layer is provided on the side of the backlight source, and the reflection layer can reflect the backlight light and allow the fingerprint recognition light to pass through. It should be noted that the backlight module proposed in the embodiments of the present disclosure may refer to the backlight module 100 of the display screen 10 described in the above embodiments and implementations.

[0063] Embodiments of the present disclosure also provide a light source assembly, which is applied to a display screen with an in-screen fingerprint recognition system. The light source assembly includes a fingerprint light source for providing fingerprint recognition light, a backlight source for providing backlight light, and a first bracket and a second bracket integrally provided. The backlight source is disposed in the first bracket, and the fingerprint light source is disposed in the second bracket. It should be noted that the light source assembly proposed in the embodiments of the present disclosure can be applied to the display screen 10 described in the above embodiments and implementations.

[0064] Optionally, the first bracket is located below the second bracket.

[0065] Optionally, a first opening is provided on the side of the first bracket, and a second opening is provided on the top of the second bracket.

[0066] Those skilled in the art will readily think of other implementations of the present disclosure after considering the specification and practicing the disclosure herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and examples are only considered exemplary, and the true scope and spirit of the present disclosure are pointed out by the claims of the present disclosure.

[0067] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A display screen, characterized in that, It includes an in-screen fingerprint recognition system, a backlight module, and a display panel. The backlight module is disposed below the display panel; The in-screen fingerprint recognition system includes a fingerprint light source for providing fingerprint recognition light and a fingerprint sensor for receiving the fingerprint recognition light. The backlight module includes a backlight source for providing backlight light; Wherein, the fingerprint light source and the backlight source are integrally arranged to form a dual-crystal structure. The fingerprint light source is longitudinally located above the backlight source. The larger one of the lateral dimension of the fingerprint light source and the lateral dimension of the backlight source is the lateral dimension of the dual-crystal structure. The fingerprint sensor is disposed below the backlight module. The fingerprint recognition light emitted from the fingerprint light source passes through the display panel and transmits to the finger, and after being reflected by the finger, it passes through the display panel and the backlight module again and transmits to the fingerprint sensor.

2. The display screen according to claim 1, characterized in that, The display screen further includes a first bracket and a second bracket which are integrally arranged. The integrally arranged first bracket and second bracket are fixedly disposed below the display panel. The first bracket is located below the second bracket. The backlight source is disposed in the first bracket, and the fingerprint light source is disposed in the second bracket.

3. The display screen according to claim 2, characterized in that, A first opening is provided on the side of the first bracket, and a second opening is provided on the top of the second bracket.

4. The display screen according to claim 3, characterized in that, The display panel includes a flexible circuit board which is electrically connected to the fingerprint sensor. A first metal trace is provided on the flexible circuit board, and a first light avoidance area is formed at a position corresponding to the second opening.

5. The display screen according to claim 4, wherein The display panel includes a thin film transistor (TFT) substrate which is electrically connected to the flexible circuit board. A second metal trace is provided on the TFT substrate, and a second light avoidance area is formed at a position corresponding to the second opening.

6. The display screen according to claim 1, characterized in that, The wavelength range of the fingerprint recognition light emitted by the fingerprint light source is different from the wavelength range of the backlight light emitted by the backlight source.

7. The display screen according to claim 6, characterized in that, The fingerprint light source is an infrared light source, and the backlight source is a white light source.

8. The display screen according to claim 1, wherein The backlight module further includes a reflective layer which is disposed on the side of the backlight source. The reflective layer can reflect the backlight light and allow the fingerprint recognition light to pass through.

9. The display screen according to claim 8, wherein The backlight module further includes a housing part. The backlight source and the reflective layer are disposed in the housing part. A through hole for passing the fingerprint recognition light is formed on the housing part. The fingerprint sensor is disposed below the housing part and corresponds to the position of the through hole.

10. The display screen according to claim 9, wherein An absorption coating for absorbing the fingerprint recognition light is provided on the inner surface of the housing part.

11. An electronic device, characterized in that, It includes a device body and the display screen according to any one of claims 1 to 10, and the display screen is assembled on the device body.

12. An in-screen fingerprint recognition system is applied to a display screen with a backlight module. The backlight module includes a backlight light source for providing backlight light, and is characterized in that, The in-screen fingerprint recognition system includes: A fingerprint light source for providing fingerprint recognition light. The fingerprint light source and the backlight source are integrally arranged to form a dual-crystal structure. The fingerprint light source is longitudinally located above the backlight source. The larger one of the lateral dimension of the fingerprint light source and the lateral dimension of the backlight source is the lateral dimension of the dual-crystal structure; A fingerprint sensor for receiving fingerprint recognition light is disposed below the backlight module.

13. A backlight module is applied to a display screen with an in-screen fingerprint recognition system. The in-screen fingerprint recognition system includes a fingerprint light source for providing fingerprint recognition light, and is characterized in that, The backlight module includes: A backlight source for providing backlight light, the backlight source and the fingerprint light source are integrally arranged to form a dual-crystal structure, the fingerprint light source is longitudinally located below the fingerprint light source, and the larger one of the lateral dimension of the fingerprint light source and the lateral dimension of the backlight source is the lateral dimension of the dual-crystal structure; A reflective layer is disposed on the side of the backlight source, and the reflective layer can reflect the backlight light and allow the fingerprint recognition light to pass through.

14. A light source component is applied to a display screen with an in-screen fingerprint recognition system, characterized in that, The light source assembly includes a fingerprint light source for providing fingerprint recognition light, a backlight source for providing backlight light, and a first bracket and a second bracket that are integrally arranged. The backlight source is disposed in the first bracket, and the fingerprint light source is disposed in the second bracket; the backlight source and the fingerprint light source are integrally arranged to form a dual-crystal structure, the fingerprint light source is longitudinally located below the fingerprint light source, and the larger one of the lateral dimension of the fingerprint light source and the lateral dimension of the backlight source is the lateral dimension of the dual-crystal structure.

15. The light source assembly according to claim 14, wherein A first opening is provided at the side of the first bracket, and a second opening is provided at the top of the second bracket.

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