Display device with 3D camera module and electronic device

Abstract

The application provides a display device with a 3D camera module and an electronic device, comprising a display substrate and a 3D camera module; the display substrate comprises a display area and a black matrix area surrounding the display area; the black matrix area comprises at least two light transmission areas; the 3D camera module comprises a depth camera module located at the backlight side of the black matrix area; the depth camera module comprises a floodlight and an imaging module; the floodlight is used for emitting a floodlight to irradiate on a to-be-photographed object through a light transmission area; the imaging module is used for receiving the floodlight reflected by the to-be-photographed object through another light transmission area, and obtaining a depth map of the surface of the to-be-photographed object according to the time delay or phase difference of the light. The depth camera module is arranged at the backlight side of the black matrix area of the display substrate, so that a non-display area, i.e. a notch area, is not needed to be arranged at the top of the display device to install the depth camera module, and the display device is not affected in appearance and full-screen experience.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a display device and electronic device having a 3D camera module. Background Technology

[0002] As the market develops, consumers have increasingly stringent requirements for display effects, demanding not only diverse designs but also higher screen-to-body ratios. Full-screen technology, through ultra-narrow bezels or even borderless designs, achieves screen-to-body ratios exceeding 90%.

[0003] Full-screen phones maximize the display area without changing the body shape, resulting in a more stunning display effect. Existing full-screen structural designs have a non-display area, or notch, at the top of the display substrate to accommodate components such as the depth camera module in 3D camera modules. However, this still affects the aesthetics of the display device and the full-screen experience. Summary of the Invention

[0004] In view of this, the present invention provides a display device and electronic device with a 3D camera module to solve the problem that the non-display area of ​​the existing mounting depth camera module affects the aesthetics of the display device and the full-screen experience.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The display device with a 3D camera module provided by the present invention includes a display substrate and a 3D camera module;

[0007] The display substrate includes a display area and a black matrix area surrounding the display area; the black matrix area includes at least two light-transmitting areas.

[0008] The 3D camera module includes a depth camera module located on the backlight side of the black matrix area;

[0009] The depth camera module includes a floodlight source and an imaging module;

[0010] The floodlight source is used to emit floodlight so that the floodlight shines on the object to be photographed through a light-transmitting area;

[0011] The imaging module is used to receive the floodlight reflected by the object to be photographed through another light-transmitting area, and to obtain a depth image of the surface of the object to be photographed based on the delay or phase difference of the floodlight.

[0012] Preferably, the light-transmitting area is provided with an infrared film layer;

[0013] The floodlight source is used to emit floodlight so that the floodlight passes through an infrared film layer and a light-transmitting area and illuminates the object to be photographed.

[0014] The imaging module is used to receive the floodlight reflected from the object to be photographed through another infrared film layer and another light-transmitting area, and to obtain a depth image of the surface of the object to be photographed based on the delay or phase difference of the floodlight.

[0015] Preferably, the floodlight source includes an LED light source and a projection lens;

[0016] The LED light source is used to emit floodlight.

[0017] The projection lens is used to focus the floodlight onto the display substrate and then project the floodlight onto the object to be photographed.

[0018] Preferably, the floodlight source includes a projection lens, a reflective device, a beam splitter, a diffuser, and an edge-emitting laser;

[0019] The edge-emitting laser is used to emit laser light;

[0020] The collimating lens is located on the light-emitting side of the edge-emitting laser and is used to collimate the incident laser and emit a collimated beam.

[0021] The reflective device is located on the light-emitting side of the collimating lens and is used to refract the collimated beam and project it onto the beam-splitting device.

[0022] The beam splitter is located on the light-emitting side of the reflector and is used to split the laser beam projected by the reflector into multiple laser beams.

[0023] The diffuser is disposed on the light-emitting side of the beam splitter to diffuse the multiple laser beams and to allow the multiple laser beams to be emitted onto the projection lens.

[0024] The projection lens is used to focus the laser onto the display substrate and then project the laser onto the object to be photographed.

[0025] Preferably, the floodlight source includes a projection lens, a diffuser, a beam splitter, and a vertical-cavity surface-emitting laser array;

[0026] The vertical cavity surface-emitting laser array is used to emit array lasers;

[0027] The beam splitter is located on the output side of the vertical cavity surface-emitting laser array and is used to split the array laser projected by the reflector into multiple randomly distributed laser beams.

[0028] The diffuser is disposed on the light-emitting side of the beam splitter to diffuse the multiple laser beams and to allow the multiple laser beams to be emitted onto the projection lens.

[0029] The projection lens is used to focus the laser onto a light-transmitting area on the display substrate and then project the laser onto the object to be photographed.

[0030] Preferably, the floodlight source includes a diffuser and a vertical-cavity surface-emitting laser array;

[0031] The vertical cavity surface-emitting laser array is used to emit array lasers;

[0032] The diffuser is disposed on the light-emitting side of the vertical cavity surface-emitting laser array to diffuse the array laser to form a floodlight, and to allow the floodlight to illuminate the object to be photographed through a light-transmitting area.

[0033] Preferably, the depth camera module includes a driving circuit connected to the floodlight source and the imaging module;

[0034] The driving circuit is used to control the floodlight source and the imaging module to be turned on or off simultaneously, and to control the output light power of the floodlight source by controlling the driving current of the floodlight source.

[0035] Preferably, the light inlet of the imaging module is oriented towards the display panel so that the laser reflected from the object to be photographed penetrates the display panel and enters the imaging module;

[0036] The light outlet of the floodlight source is positioned facing the display panel so that the laser can penetrate the display panel and illuminate the object to be photographed located on the light-emitting side of the display panel.

[0037] Preferably, the depth camera module includes a processing module; the 3D camera module further includes a 2D imaging module.

[0038] The 2D imaging module is used to capture 2D images of the object to be photographed;

[0039] The processing module is used to obtain a 3D image of the object to be photographed based on the depth image and the 2D image.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The display device and electronic device with a 3D camera module provided by the present invention place the depth camera module on the backlight side of the black matrix area of ​​the display substrate, thereby eliminating the need to set a non-display area, i.e., a notch area, on the top of the display device to install the depth camera module, thus not affecting the aesthetics of the display device and the full-screen experience;

[0042] In this invention, an infrared film layer is set in the light-transmitting area of ​​the black matrix region. This infrared film layer can transmit infrared light so as not to affect the operation of the depth camera module, but visible light cannot pass through the infrared film layer, thus ensuring the integrity of the black matrix region and not affecting the aesthetics of the display screen.

[0043] In this invention, a beam splitter is split into multiple randomly distributed laser beams by a projection lens and then focused onto the display substrate. These multiple laser beams are then projected onto the object to be photographed, reducing the installation space of the laser module and enabling the application of this invention on narrow-bezel screens (screens with a narrower black matrix area). Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of a display device according to an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the structure of another display device in an embodiment of the present invention;

[0047] Figure 3 This is a schematic diagram of the first installation method of the laser module in an embodiment of the present invention;

[0048] Figure 4 This is a schematic diagram of a second installation method for the laser module in an embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of the third installation method for the laser module in this embodiment of the invention;

[0050] Figure 6 This is a schematic diagram of a display device based on a floodlight source in an embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of a display device based on a laser array in an embodiment of the present invention;

[0052] Figure 8 This is a schematic diagram of another display device based on a laser array in an embodiment of the present invention;

[0053] Figure 9 This is a schematic diagram of the structure of a side-emitting laser in an embodiment of the present invention.

[0054] In the picture:

[0055] 10 is the display substrate; 11 is the floodlight source; 12 is the imaging module; 13 is the beam splitter; 14 is the driving circuit; 15 is the processing module; 16 is the projection lens; 17 is the reflector; 18 is the collimating lens; 19 is the diffuser; 20 is the black matrix area; 30 is the display area; 40 is the inner screen. Detailed Implementation

[0056] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0057] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be for both fixing and circuit connection purposes.

[0058] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] As described in the background section, existing full-screen-based structural designs have a non-display area, or notch area, on the top of the display substrate in order to install devices such as depth cameras in 3D camera modules. However, this affects the aesthetics of the display device and the full-screen experience.

[0061] The inventors discovered that existing depth camera modules all use vertical cavity surface emitting lasers (VCSELs) as light sources. However, due to the low output power of VCSEL lasers, when the transmittance of the display substrate is low, the light power of the laser after passing through the first light-transmitting area is low, and an effective depth image cannot be obtained. Therefore, it is necessary to set a non-display area, i.e., a notch area, on the top of the display substrate, and to make holes in the non-display area to install the VCSEL laser.

[0062] Based on this, the present invention provides a display device with a 3D camera module to overcome the above-mentioned problems existing in the prior art, including a display substrate and a 3D camera module;

[0063] The display substrate includes a display area and a black matrix area surrounding the display area; the black matrix area includes at least two light-transmitting areas.

[0064] The 3D camera module includes a depth camera module located on the backlight side of the black matrix area;

[0065] The depth camera module includes a floodlight source and an imaging module;

[0066] The floodlight source is used to emit floodlight so that the floodlight shines on the object to be photographed through a light-transmitting area;

[0067] The imaging module is used to receive the floodlight reflected by the object to be photographed through another light-transmitting area, and to obtain a depth image of the surface of the object to be photographed based on the delay or phase difference of the floodlight.

[0068] The display device and electronic device with a 3D camera module provided by the present invention place the depth camera module on the backlight side of the black matrix area of ​​the display substrate, thereby eliminating the need to set a non-display area, such as a notch area, on the top of the display device to install the depth camera module, thus not affecting the aesthetics and full-screen experience of the display device.

[0069] The above is the core idea of ​​this invention. To make the above-mentioned objectives, features, and advantages of this invention more apparent and understandable, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0070] This invention provides a display device with a 3D camera module, such as... Figure 1As shown, the system includes a display substrate 10 and a 3D camera module, which includes a depth camera module located on the backlight side of the display substrate 10. It should be noted that the depth camera module in this embodiment is an infrared camera module, and the floodlight source is an infrared laser that emits infrared laser light. The floodlight source employs a vertical-cavity surface-emitting laser array, an edge-emitting laser, and a semiconductor laser.

[0071] In this embodiment, the light-emitting side of the display substrate is the side that can display images, while the backlight side is the side that cannot display images. That is, the depth camera module in this embodiment can be located below the display substrate 10, i.e., below the screen, without damaging the structure of the display substrate 10; for example, it does not require drilling a hole in the non-display area at the top of the display substrate 10 to house the depth camera module. The display substrate includes a display area and a black matrix area surrounding the display area; the black matrix area includes at least two light-transmitting areas. The light-transmitting areas are circular areas with a diameter of less than 1 mm.

[0072] In this embodiment of the invention, the depth camera module includes a floodlight source 11 and an imaging module 12. Both the floodlight source 11 and the imaging module 12 are located on the backlight side of the display substrate 10. The light outlet of the floodlight source 11 is positioned facing the display substrate 10, allowing the floodlight to pass through a first light-transmitting area 10 and illuminate the object to be photographed on the light-emitting side of the display substrate 10. The light inlet of the imaging module 12 is positioned facing the display substrate 10, allowing the laser light reflected from the object to pass through a second light-transmitting area 10 and enter the imaging module 12.

[0073] The floodlight source 11 is used to emit floodlight so that the floodlight illuminates the object to be photographed after passing through the first light-transmitting area; the imaging module 12 is used to receive the floodlight reflected by the object to be photographed through the first light-transmitting area 10, and obtain a depth image of the surface of the object to be photographed based on the floodlight, the depth image including depth information of different areas of the surface of the object to be photographed.

[0074] Since the floodlight source and imaging module are located on the backlight side of the black matrix area, there is no need to set up a non-display area on the top of the display device to install the depth camera module, thus not affecting the aesthetics of the display device and the full-screen experience.

[0075] Furthermore, since both the floodlight source 11 and the imaging module 12 are located on the backlight side of the display substrate 10, there are multiple possibilities for their arrangement and combination. Without affecting aesthetics, the distance between the floodlight source 11 and the imaging module 12 can be increased to improve the shooting accuracy of the depth camera module, such as... Figure 2 As shown, the floodlight source 11 and the imaging module 12 can also be set in the black matrix areas on both sides respectively.

[0076] Optionally, the light-transmitting area is provided with an infrared film layer;

[0077] The floodlight source 11 is used to emit infrared floodlight so that the infrared floodlight passes through an infrared film layer and a light-transmitting area and illuminates the object to be photographed.

[0078] The imaging module 12 employs an infrared camera to receive the infrared floodlight reflected by the object to be photographed through another infrared film layer and another light-transmitting area, and to obtain a depth image of the surface of the object to be photographed based on the infrared laser.

[0079] Optionally, such as Figure 7 As shown, the floodlight source includes a diffuser 19 and a vertical-cavity surface-emitting laser array 1102;

[0080] The vertical cavity surface-emitting laser array 1102 is used to emit array lasers;

[0081] The diffuser 19 is disposed on the light-emitting side of the vertical cavity surface-emitting laser array 1102, and is used to diffuse the array laser to form a floodlight, and to allow the floodlight to illuminate the object to be photographed through a light-transmitting area.

[0082] Optionally, such as Figure 4 , Figure 8 As shown, the floodlight source includes a projection lens 16, a diffuser 19, a beam splitter 13, and a vertical cavity surface-emitting laser array 1102.

[0083] The vertical cavity surface-emitting laser array 1102 is used to emit array lasers;

[0084] The beam splitter 13 is located on the light-emitting side of the vertical cavity surface-emitting laser array and is used to split the array laser projected by the reflector into multiple randomly distributed laser beams.

[0085] The diffuser 19 is disposed on the light-emitting side of the beam splitter to diffuse the multiple laser beams and to allow the multiple laser beams to be emitted onto the projection lens.

[0086] The projection lens 16 is used to focus the laser onto a light-transmitting area on the display substrate and then project the laser onto the object to be photographed.

[0087] In this embodiment of the invention, the aperture of the laser projected by the projection lens 16 is located on the display substrate 10. The display substrate 10 can be a glass substrate, and the inner side of the display substrate 10 is the inner screen 40 of the display device.

[0088] In embodiments of the present invention, such as Figure 6As shown, the depth camera module includes a driving circuit 14 connected to a floodlight source 11 and an imaging module 12. The driving circuit 14 is used to control the floodlight source 11 and the imaging module 12 to be turned on or off simultaneously, and to control the output light power of the floodlight source 11 by controlling the driving current of the floodlight source 11, so as to control the light power of the laser passing through the first light-transmitting region 10 by controlling the output light power of the floodlight source 11.

[0089] Furthermore, the depth camera module also includes a processing module 15, and the 3D camera module also includes a 2D imaging module. The 2D imaging module is used to capture 2D images of the object to be photographed. The processing module 15 is used to obtain a 3D image of the object to be photographed based on the depth image captured by the 3D camera module and the 2D image captured by the 2D imaging module.

[0090] It should be noted that in order to place the depth camera module on the backlight side of the display substrate 10, the driving current can be increased by the driving circuit 14, the pulse width of the floodlight source 11 can be reduced, the light power of the floodlight source 11 can be greatly increased, and the total pulse energy of the floodlight source 11 can be kept basically unchanged, thus meeting the light power limit for human eye safety.

[0091] In one embodiment of the present invention, such as Figure 5 , Figure 9 As shown, the floodlight source 11 includes a projection lens 16, a reflective device 17, a beam splitter 13, a diffuser 19, and an edge-emitting laser 1103.

[0092] The edge-emitting laser 1103 is used to emit laser light;

[0093] The collimating lens 18 is located on the light-emitting side of the edge-emitting laser and is used to collimate the incident laser and emit a collimated beam.

[0094] The reflective device 17 is located on the light-emitting side of the collimating lens and is used to refract the collimated beam and project it onto the beam splitter.

[0095] The beam splitter 13 is located on the light-emitting side of the reflector and is used to split the laser beam projected by the reflector into multiple randomly distributed laser beams.

[0096] The diffuser 19 is disposed on the light-emitting side of the beam splitter to diffuse the multiple laser beams and to allow the multiple laser beams to be emitted onto the projection lens.

[0097] The projection lens 16 is used to focus the laser onto a light-transmitting area on the display substrate and then project the laser onto the object to be photographed.

[0098] In this embodiment of the invention, the reflective device 17 can be a reflective mirror or a triangular prism. A reflective film can be coated on the reflective surface of the triangular prism.

[0099] Optionally, the imaging module is a TOF (Time of Flight) camera. The imaging module obtains a depth image of the object's surface based on the delay or phase difference of the laser light reflected from the object. That is, the imaging module obtains the depth image of the object's surface based on the time difference between the emitted and received laser light, or based on the phase difference between the emitted and received laser light. Then, the processing module 15 obtains a 3D image of the object based on the depth image and the 2D image.

[0100] In this embodiment of the invention, the beam splitter 13 can be a nanophotonic chip, a diffractive optical element (DOE), or a coded structured photomask, etc., and the invention is not limited to these.

[0101] The display device with a 3D camera module provided by the present invention has a high output light power of floodlight source. Even when facing a display substrate with low transmittance, the light power of the laser passing through the first light-transmitting area is also high. Therefore, the depth camera module can be set on the backlight side of the display substrate, so there is no need to set a non-display area on the top of the display device to install the depth camera module, thus not affecting the aesthetics of the display device and the full-screen experience.

[0102] This invention also provides an electronic device, which includes the display device provided in any of the above embodiments. This electronic device can be a mobile phone, tablet computer, or digital camera, etc. The electronic device with a 3D camera module provided by this invention eliminates the need to set a non-display area on the top of the display device to install the depth camera module, resulting in a more aesthetically pleasing appearance and facilitating a full-screen experience.

[0103] The display device and electronic device with a 3D camera module in this embodiment of the invention place the depth camera module on the backlight side of the black matrix area of ​​the display substrate, thereby eliminating the need to set a non-display area (notch) on the top of the display device to install the depth camera module, thus not affecting the aesthetics and full-screen experience of the display device; an infrared film layer is set in the light-transmitting area of ​​the black matrix area. This infrared film layer can transmit infrared light and will not affect the operation of the depth camera module, but visible light cannot pass through the infrared film layer, ensuring the integrity of the black matrix area and not affecting the aesthetics of the display screen; after the beam splitter is divided into multiple randomly distributed laser beams by the projection lens and focused on the display substrate, the multiple laser beams are projected onto the object to be photographed, reducing the installation space of the laser module and realizing the application of the invention on narrow bezel screens (screens with a narrow black matrix area).

[0104] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. 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 the invention. Therefore, the invention 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.

[0105] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. 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 the invention. Therefore, the invention 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.

[0106] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A display device with a 3D camera module, characterized in that, Including display substrates and 3D camera modules; The display substrate includes a display area and a black matrix area surrounding the display area; the black matrix area includes at least two light-transmitting areas; the light-transmitting areas are circular areas with a diameter of less than 1 mm; The 3D camera module includes a depth camera module located on the backlight side of the black matrix area; The depth camera module includes a floodlight source and an imaging module; The floodlight source is used to emit floodlight so that the floodlight shines on the object to be photographed through a light-transmitting area; The floodlight source includes a projection lens, which is used to focus the floodlight onto a light-transmitting area on the display substrate and then project the floodlight onto the object to be photographed; the aperture of the projection lens is located on the display substrate; The imaging module is used to receive the floodlight reflected by the object to be photographed through another light-transmitting area, and to obtain a depth image of the surface of the object to be photographed based on the delay or phase difference of the floodlight.

2. The display device according to claim 1, characterized in that, The light-transmitting area is provided with an infrared film layer; The floodlight source is used to emit floodlight so that the floodlight passes through an infrared film layer and a light-transmitting area and illuminates the object to be photographed. The imaging module is used to receive the floodlight reflected from the object to be photographed through another infrared film layer and another light-transmitting area, and to obtain a depth image of the surface of the object to be photographed based on the delay or phase difference of the floodlight.

3. The display device according to claim 1, characterized in that, The floodlight source includes an LED light source and a projection lens; The LED light source is used to emit floodlight; The projection lens is used to focus the floodlight onto the display substrate and then project the floodlight onto the object to be photographed.

4. The display device according to claim 1, characterized in that, The floodlight source includes a projection lens, a reflective device, a beam splitter, a diffuser, and an edge-emitting laser; The edge-emitting laser is used to emit laser light; The collimating lens is located on the light-emitting side of the edge-emitting laser and is used to collimate the incident laser and emit a collimated beam. The reflective device is located on the light-emitting side of the collimating lens and is used to refract the collimated beam and project it onto the beam-splitting device. The beam splitter is located on the light-emitting side of the reflector and is used to split the laser beam projected by the reflector into multiple laser beams. The diffuser is disposed on the light-emitting side of the beam splitter to diffuse the multiple laser beams and to allow the multiple laser beams to be emitted onto the projection lens. The projection lens is used to focus the laser onto a light-transmitting area on the display substrate and then project the laser onto the object to be photographed.

5. The display device according to claim 1, characterized in that, The floodlight source includes a projection lens, a diffuser, a beam splitter, and a vertical cavity surface-emitting laser array; The vertical cavity surface-emitting laser array is used to emit array lasers; The beam splitter is located on the output side of the vertical cavity surface-emitting laser array and is used to split the array laser projected by the reflector into multiple randomly distributed laser beams. The diffuser is disposed on the light-emitting side of the beam splitter to diffuse the multiple laser beams and to allow the multiple laser beams to be emitted onto the projection lens. The projection lens is used to focus the laser onto a light-transmitting area on the display substrate and then project the laser onto the object to be photographed.

6. The display device according to claim 1, characterized in that, The floodlight source includes a diffuser and a vertical-cavity surface-emitting laser array; The vertical cavity surface-emitting laser array is used to emit array lasers; The diffuser is disposed on the light-emitting side of the vertical cavity surface-emitting laser array to diffuse the array laser to form a floodlight, and to allow the floodlight to illuminate the object to be photographed through a light-transmitting area.

7. The display device according to claim 1, characterized in that, The depth camera module includes a driving circuit connected to the floodlight source and the imaging module; The driving circuit is used to control the floodlight source and the imaging module to be turned on or off simultaneously, and to control the output light power of the floodlight source by controlling the driving current of the floodlight source.

8. The display device according to claim 1, characterized in that, The light inlet of the imaging module is oriented toward the display panel so that the laser reflected by the object to be photographed can penetrate the display panel and enter the imaging module. The light outlet of the floodlight source is positioned facing the display panel so that the laser can penetrate the display panel and illuminate the object to be photographed located on the light-emitting side of the display panel.

9. The display device according to claim 1, characterized in that, The depth camera module includes a processing module; the 3D camera module also includes a 2D imaging module. The 2D imaging module is used to capture 2D images of the object to be photographed; The processing module is used to obtain a 3D image of the object to be photographed based on the depth image and the 2D image.

10. An electronic device, characterized in that, Includes the display device according to any one of claims 1 to 9.

Images