CN115499640B - Display device and electronic device with 3D camera module - Google Patents

Abstract

The invention provides a display device with a 3D camera module and electronic equipment, comprising a display substrate and the 3D camera module; the display substrate includes a display area and a black matrix area surrounding the display area; the black matrix region includes a first light-transmitting region; the 3D camera module comprises a depth camera module; the depth camera module comprises a laser module and an imaging module; the laser module is positioned on the backlight side of the black matrix area; the imaging module is positioned on the backlight side of the display area; the laser module includes a structured light projector; a structured light projector for projecting structured light toward the lens assembly; the lens assembly is used for converging a plurality of laser beams and then making the laser beams incident on the light incident surface of the lamp mirror; a lamp mirror for irradiating incident laser beams onto an object to be photographed through a first light-transmitting region; and the imaging module is used for receiving the laser which penetrates the display area after being reflected by the object to be shot. The invention can make the depth camera module with projection lens installed in a narrow gap without shielding the FOV.

Description

Display device and electronic device with 3D camera module

Technical Field

The present invention relates to the field of display technology, and more specifically, to a display device and electronic equipment with a 3D camera module.

Background technique

With the development of the market, consumers have increasingly stringent requirements for display effects, requiring not only diversified appearance designs, but also a higher screen-to-body ratio. Full-screen technology achieves a screen-to-body ratio of more than 90% through ultra-narrow or even borderless designs.

Full-screen mobile phones maximize the display area without changing the body, making the display effect more amazing. In the existing full-screen structural design, in order to install devices such as the depth camera module in the 3D camera module, a non-display area, i.e., the bangs area, is set on the top of the display substrate. However, this still affects the beauty of the display device and the full-screen experience.

Summary of the invention

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

To achieve the above objectives, in a first aspect, the present invention provides the following technical solutions:

A display device with a 3D camera module provided by the present invention includes 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 a first light-transmitting area;

The 3D camera module includes a depth camera module; the depth camera module includes a laser module and an imaging module; the laser module is located on the backlight side of the black matrix area; the imaging module is located on the backlight side of the display area;

The laser module includes a structured light projector and a projection lens; the projection lens includes a lens assembly and a light mirror; the structured light projector is used to project structured light to the lens assembly, and the structured light includes a plurality of randomly distributed laser beams; the lens assembly is used to converge the plurality of laser beams and then make them incident on the light incident surface of the light mirror; the light mirror is used to make the incident plurality of laser beams pass through the first light-transmitting area and irradiate the object to be photographed;

The imaging module is used to receive the laser light that is reflected by the object to be photographed and then penetrates the display area, and obtain a depth image of the surface of the object to be photographed according to the received spot pattern of the laser light reflected by the object to be photographed.

Preferably, the first light-transmitting area is provided with a first infrared film layer;

The lamp mirror is used to allow the divergent and incident multiple infrared laser beams to pass through the first infrared film layer and the first light-transmitting area and irradiate the object to be photographed.

Preferably, the lens assembly comprises a first lens, a second lens and a lens barrel;

The first lens and the second lens are sequentially arranged on the light incident side of the lens barrel; the lamp lens is arranged on the light exit side of the lens barrel;

The first lens is used to converge the multiple laser beams and project them to the second lens;

The second lens is used to converge the multiple laser beams projected by the first lens again and project them onto the light incident surface of the lamp mirror.

Preferably, a concave light entrance is provided on the light entrance side of the lamp mirror;

The bottom surface of the light entrance is a light entrance surface; the light entrance surface is a convex surface; the aperture of the projection lens is arranged on the convex surface;

The light incident surface is used to make the incident multiple laser beams emerge in parallel or nearly in parallel.

Preferably, the laser module comprises a light splitter located between the structured light projector and the projection lens;

The structured light projector uses a laser array to project dot matrix lasers;

The beam splitter is located at the light-emitting side of the laser array and is used to split the dot matrix laser into a plurality of randomly distributed laser beams.

Preferably, the structured light projector comprises an edge-emitting laser, a collimating lens, a reflecting device and a light splitting device located between the laser module and the projection lens;

The edge emitting laser is used to project laser light toward the collimating lens;

The collimating lens is located at the light-emitting side of the edge-emitting laser, and is used to collimate the incident laser and emit a collimated light beam;

The reflective device is located at the light-emitting side of the collimating lens, and is used to fold the collimated light beam and project it to the beam splitting device;

The beam splitter is located at the light-emitting side of the reflector, and is used to split the collimated light beam projected by the reflector into a plurality of randomly distributed laser beams.

Preferably, the depth camera module includes a driving circuit connected to the laser module and the imaging module;

The driving circuit is used to control the laser module and the imaging module to be turned on or off simultaneously, and to control the output optical power of the laser module by controlling the driving current of the laser module.

Preferably, the imaging module comprises a receiving lens and a light detector array; the light detector array comprises a plurality of light detectors distributed in an array;

The receiving lens is used to converge parallel lasers incident at the same angle onto an upper light detector located on the focal plane of the receiving lens;

The light detector is used to receive the laser to generate a spot pattern, and obtain a depth image of the surface of the object to be photographed according to the spot pattern.

Preferably, it also includes a floodlight projector;

The floodlight projector is arranged on the backlight side of the black matrix area, and is used to project floodlight to the object to be photographed through the second light-transmitting area arranged on the black matrix area according to a preset light illumination threshold, so as to illuminate the object;

Alternatively, the floodlight projector is located at the backlight side of the display area, and is used to allow the floodlight to penetrate the display area and illuminate the object to be photographed for illumination according to a preset light intensity threshold.

The electronic device provided according to the present invention is characterized by comprising the above-mentioned display device.

In a second aspect, the present invention provides the following technical solutions:

A display device with a 3D camera module provided by the present invention includes 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 a first light-transmitting area;

The 3D camera module includes a depth camera module; the depth camera module includes a laser module and an imaging module; the laser module is located on the backlight side of the display area; the imaging module is located on the backlight side of the black matrix area;

The laser module includes a structured light projector and a projection lens; the structured light projector is used to project structured light to the projection lens, wherein the structured light includes a plurality of randomly distributed laser beams; the projection lens is used to allow the incident plurality of laser beams to penetrate the display area and irradiate the object to be photographed;

The imaging module includes a light mirror, a receiving lens and a light detector array; the light detector array includes a plurality of light detectors distributed in an array; the light mirror is used to receive the laser reflected by the object to be photographed through the first light-transmitting area, and after shrinking to the narrowest at the aperture, it is divergently projected to the receiving lens; the receiving lens is used to converge parallel lasers incident at the same angle onto the light detector located in the focal plane of the receiving lens; the light detector is used to receive the laser to generate a spot pattern, and obtain a depth image of the surface of the object to be photographed according to the spot pattern.

Preferably, the first light-transmitting area is provided with a first infrared film layer;

The lamp mirror is used to receive the laser reflected by the object to be photographed through the first light-transmitting area and the first infrared film layer in sequence, and after shrinking to the narrowest at the aperture, divergently project it to the receiving lens.

Preferably, the receiving lens comprises a first lens, a second lens and a lens barrel;

The first lens and the second lens are arranged in sequence on the light-emitting side of the lens barrel; the lamp lens is arranged on the light-receiving side of the lens barrel;

The second lens is used to converge the multiple laser beams projected by the lamp mirror and project them onto the light incident surface of the first lens;

The first lens is used to converge the multiple laser beams projected by the second lens and project them onto the photodetector array.

Preferably, a concave light outlet is provided on the light outlet side of the lamp mirror;

The bottom surface of the light outlet is a light outlet surface; the light outlet surface is a convex surface; the aperture of the receiving lens is arranged on the convex surface;

The light-emitting surface is used to make the incident multiple laser beams diverge and emit.

Preferably, the laser module comprises a light splitter located between the structured light projector and the projection lens;

The structured light projector uses a laser array to project dot matrix lasers;

The beam splitter is located at the light-emitting side of the laser array and is used to split the dot matrix laser into a plurality of randomly distributed laser beams.

Preferably, the structured light projector comprises an edge-emitting laser, a collimating lens, a reflective device and a light splitting device located between the laser module and the display substrate;

The edge emitting laser is used to project laser light toward the collimating lens;

The collimating lens is located at the light-emitting side of the edge-emitting laser, and is used to collimate the incident laser and emit a collimated light beam;

The reflective device is located at the light-emitting side of the collimating lens, and is used to fold the collimated light beam and project it to the beam splitting device;

The beam splitter is located at the light-emitting side of the reflector, and is used to split the collimated light beam projected by the reflector into a plurality of randomly distributed laser beams.

Preferably, the depth camera module includes a driving circuit connected to the laser module and the imaging module;

The driving circuit is used to control the laser module and the imaging module to be turned on or off simultaneously, and to control the output optical power of the laser module by controlling the driving current of the laser module.

Preferably, 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 a 2D image of the object to be captured;

The processing module is used to obtain a 3D image of the object to be photographed according to the depth image and the 2D image.

Preferably, it also includes a floodlight projector;

The floodlight projector is arranged on the backlight side of the black matrix area, and is used to project floodlight to the object to be photographed through the second light-transmitting area arranged on the black matrix area according to a preset light illumination threshold, so as to illuminate the object;

Alternatively, the floodlight projector is located at the backlight side of the display area, and is used to allow the floodlight to penetrate the display area and illuminate the object to be photographed for illumination according to a preset light intensity threshold.

The electronic device provided according to the present invention is characterized by comprising the above-mentioned display device.

In a third aspect, the present invention provides the following technical solutions:

A display device with a 3D camera module provided by the present invention includes 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 a light-transmitting area;

The 3D camera module includes a depth camera module; the depth camera module includes a laser module and an imaging module; the laser module is located on the backlight side of the black matrix area; the imaging module is located on the backlight side of the display area;

The laser module includes a floodlight source and a projection lens; the projection lens includes a lens assembly and a lamp mirror; the floodlight source is used to emit floodlight; the lens assembly is used to converge the floodlight and then make it incident on the light incident surface of the lamp mirror; the lamp mirror is used to make the incident floodlight pass through the light-transmitting area and irradiate the object to be photographed;

The imaging module is used to receive the floodlight that is reflected by the object to be photographed and penetrates the display area, and obtain a depth image of the surface of the object to be photographed according to the delay or phase difference of the floodlight.

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

The lamp mirror is used to allow the diffused incident infrared floodlight to pass through an infrared film layer and a light-transmitting area to illuminate the object to be photographed.

Preferably, the lens assembly comprises a first lens, a second lens and a lens barrel;

The first lens and the second lens are sequentially arranged on the light incident side of the lens barrel; the lamp lens is arranged on the light exit side of the lens barrel;

The first lens is used to converge the flood light and then project it to the second lens;

The second lens is used to converge the floodlight projected by the first lens again and project it onto the light incident surface of the lamp mirror.

Preferably, a concave light entrance is provided on the light entrance side of the lamp mirror;

The bottom surface of the light entrance is a light entrance surface; the light entrance surface is a convex surface; the aperture of the projection lens is arranged on the convex surface;

The light incident surface is used to make the incident floodlight emerge in parallel or nearly in parallel.

Preferably, the floodlight source includes a structured light projector, a light splitting device and a diffuser;

The structured light projector uses a laser array to project dot matrix lasers;

The optical splitter is located at the light-emitting side of the laser array and is used to split the dot matrix laser into multiple discretely distributed laser beams;

The diffusion sheet is arranged on the light-emitting side of the light-splitting device, and is used for diffusing the multiple laser beams and making the multiple laser beams emit flood light onto the projection lens.

Preferably, the floodlight source comprises an edge-emitting laser, a collimating lens, a reflective device, a beam splitter and a diffuser;

The edge emitting laser is used to project laser light toward the collimating lens;

The collimating lens is located at the light-emitting side of the edge-emitting laser, and is used to collimate the incident laser and emit a collimated light beam;

The reflective device is located at the light-emitting side of the collimating lens, and is used to fold the collimated light beam and project it to the beam splitting device;

The beam splitter is located at the light-emitting side of the reflector, and is used to split the collimated light beam projected by the reflector into a plurality of discretely distributed laser beams;

The diffusion sheet is arranged on the light-emitting side of the light-splitting device, and is used for diffusing the multiple laser beams and making the multiple laser beams emit flood light onto the projection lens.

Preferably, the depth camera module includes a driving circuit connected to the laser module and the imaging module;

The driving circuit is used to control the laser module and the imaging module to be turned on or off simultaneously, and to control the output optical power of the laser module by controlling the driving current of the laser module.

Preferably, the imaging module comprises a receiving lens and a light detector array; the light detector array comprises a plurality of light detectors distributed in an array;

The receiving lens is used to focus the parallel flood light incident at the same angle onto the light detector located at the focal plane of the receiving lens;

The photodetector array is used to receive the floodlight and obtain a depth image of the surface of the object to be photographed according to the time delay or phase difference of the floodlight.

Preferably, the floodlight source is an LED light source.

In a fourth aspect, the present invention provides the following technical solutions:

A display device with a 3D camera module provided by the present invention includes 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 a light-transmitting area;

The 3D camera module includes a depth camera module; the depth camera module includes a laser module and an imaging module; the laser module is located on the backlight side of the display area; the imaging module is located on the backlight side of the black matrix area;

The laser module includes a floodlight source and a projection lens; the floodlight source is used to emit floodlight; the projection lens is used to allow the incident floodlight to penetrate the display area and irradiate the object to be photographed;

The imaging module includes a light mirror, a receiving lens and a light detector array; the light detector array includes a plurality of light detectors distributed in an array; the light mirror is used to receive the floodlight reflected by the object to be photographed through a light-transmitting area, and after shrinking to the narrowest at the aperture, divergently projects it to the receiving lens; the receiving lens is used to converge parallel floodlight incident at the same angle onto the light detector located on the focal plane of the receiving lens; the light detector array is used to receive the floodlight that penetrates the display area after being reflected by the object to be photographed, and obtain a depth image of the surface of the object to be photographed based on the delay or phase difference of the floodlight.

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

The light mirror is used to receive the floodlight reflected by the object to be photographed through the light-transmitting area and the infrared film layer in sequence, and after shrinking to the narrowest at the aperture, it is divergently projected to the receiving lens.

Preferably, the receiving lens comprises a first lens, a second lens and a lens barrel;

The first lens and the second lens are arranged in sequence on the light-emitting side of the lens barrel; the lamp lens is arranged on the light-receiving side of the lens barrel;

The second lens is used to converge the floodlight projected by the lamp mirror and then project it onto the light incident surface of the first lens;

The first lens is used to converge the floodlight projected by the second lens again and project it onto the photodetector array.

Preferably, a concave light outlet is provided on the light outlet side of the lamp mirror;

The bottom surface of the light outlet is a light outlet surface; the light outlet surface is a convex surface; the aperture of the receiving lens is arranged on the convex surface;

The light emitting surface is used to make the incident flood light diverge and emit.

Preferably, the floodlight source includes a structured light projector, a light splitting device and a diffuser;

The structured light projector uses a laser array to project dot matrix lasers;

The optical splitter is located at the light-emitting side of the laser array and is used to split the dot matrix laser into multiple discretely distributed laser beams;

The diffusion sheet is arranged on the light-emitting side of the light-splitting device, and is used for diffusing the multiple laser beams and making the multiple laser beams emit flood light onto the projection lens.

Preferably, the floodlight source comprises an edge-emitting laser, a collimating lens, a reflective device, a beam splitter and a diffuser;

The edge emitting laser is used to project laser light toward the collimating lens;

The collimating lens is located at the light-emitting side of the edge-emitting laser, and is used to collimate the incident laser and emit a collimated light beam;

The reflective device is located at the light-emitting side of the collimating lens, and is used to fold the collimated light beam and project it to the beam splitting device;

The beam splitter is located at the light-emitting side of the reflector, and is used to split the collimated light beam projected by the reflector into a plurality of discretely distributed laser beams;

The diffusion sheet is arranged on the light-emitting side of the light-splitting device, and is used for diffusing the multiple laser beams and making the multiple laser beams emit flood light onto the projection lens.

Preferably, the depth camera module includes a driving circuit connected to the laser module and the imaging module;

The driving circuit is used to control the laser module and the imaging module to be turned on or off simultaneously, and to control the output optical power of the laser module by controlling the driving current of the laser module.

Preferably, 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 a 2D image of the object to be captured;

The processing module is used to obtain a 3D image of the object to be photographed according to the depth image and the 2D image.

Preferably, the optical path modulator is a liquid crystal modulator;

The liquid crystal modulator comprises: a first substrate and a second substrate arranged opposite to each other;

a liquid crystal layer disposed between the first substrate and the second substrate;

Wherein, the liquid crystal layer is placed in a transparent state or a diffuse state by controlling the deflection of the liquid crystal in the liquid crystal layer;

When the liquid crystal layer is in a transparent state, the structured light projector projects structured light through the optical path modulator; when the liquid crystal layer is in a diffuse state, the structured light projector projects flood light through the optical path modulator.

The electronic device provided according to the present invention is characterized by comprising the above-mentioned display device.

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

The projection lens of the present invention converges light onto the lamp mirror through a lens assembly, and the aperture is located on the light incident surface of the lamp mirror, so that the depth camera module equipped with the projection lens is suitable for installation in a narrow gap without blocking the FOV, such as realizing the application of the present invention on a narrow-frame screen (a screen with a narrow black matrix area), and the lamp mirror can also be close to the glass cover of the mobile phone to play a dust-proof role;

In the display device and electronic device with a 3D camera module provided in the embodiments of the present invention, the laser module is arranged on the backlight side of the black matrix area of the display substrate, and the imager module is arranged on the backlight side of the display area of the display substrate, so that there is no need to arrange a non-display area, i.e., a notch area, on the top of the display device to install the depth camera module, thereby not affecting the aesthetics of the display device and the full-screen experience;

In the present invention, an infrared film layer is set in the light-transmitting area of the black matrix area. The 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, thereby ensuring the integrity of the black matrix area and not affecting the appearance of the display screen.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

FIG1 is a schematic diagram of a structure of a display device according to an embodiment of the present invention;

FIG2 is a schematic diagram of a group of structures of a display device in a modified example of the present invention;

FIG3 is a schematic diagram of a group of installation of a laser module in an embodiment of the present invention;

FIG4 is another schematic diagram of the installation of the laser module according to an embodiment of the present invention;

FIG5 is a schematic diagram of a group of installation of an imaging module in an embodiment of the present invention;

FIG6 is a schematic diagram of a display device based on an EEL laser according to an embodiment of the present invention;

FIG7 is a schematic diagram of a display device based on a VCSEL laser in an embodiment of the present invention;

FIG8 is a schematic structural diagram of a group of display devices provided in a first specific embodiment of the present invention;

FIG9 is a schematic structural diagram of a display device provided in a second specific embodiment of the present invention;

FIG10 is a schematic diagram of a structure of a projection lens according to an embodiment of the present invention;

FIG11 is another schematic diagram of the structure of a projection lens according to an embodiment of the present invention;

FIG12 is a schematic diagram of the installation of a 3D camera in an embodiment of the present invention;

FIG. 13 is a spot diagram of multiple laser beams according to an embodiment of the present invention.

In the figure:

10 is a display substrate; 11 is a laser module; 1101 is a laser array; 1102 is an edge-emitting laser; 12 is an imaging module; 1201 is a second lamp mirror; 1202 is a receiving lens; 1203 is a light detector array; 13 is a spectrometer; 14 is a driving circuit; 15 is a processing module; 16 is a lens assembly; 1601 is a first lens; 1602 is a second lens; 1603 is a spacer ring; 1604 is a lens barrel; 1605 is a spacer frame; 17 is a reflective device; 18 is a collimating lens; 19 is a lamp mirror; 20 is a black matrix area; 21 is a diffuser; 30 is a display area; 40 is an inner screen; 50 is a floodlight projector; 60 is an RGB camera.

Detailed ways

The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for fixing or for circuit connection.

It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

As described in the background technology, in the existing full-screen based structural design, in order to install devices such as the depth camera module in the 3D camera module, a non-display area, i.e., a bangs area, is set on the top of the display substrate. However, this will affect the aesthetics of the display device and the full-screen experience.

The inventors have found that existing depth camera modules all use vertical cavity surface emitting lasers (VCSEL) as light sources. However, since the output light power of the VCSEL laser is low, when the transmittance of the display substrate is low, the light power of the laser passing through the display panel is low and an effective depth image cannot be obtained. Therefore, it is necessary to set a non-display area, i.e., a bangs area, on the top of the display substrate and to dig a hole in the non-display area to install the VCSEL laser.

In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The embodiment of the present invention provides a display device with a 3D camera module, as shown in FIG1 , comprising a display substrate 10 and a 3D camera module, wherein the 3D camera module comprises a depth camera module located on the backlight side of the display substrate 10. It should be noted that the depth camera module in the embodiment of the present invention is an infrared camera module, and the laser module adopts an infrared laser that emits infrared laser. The laser module adopts a vertical cavity surface emitting laser array, an edge emitting laser, and a semiconductor laser.

Among them, the light-emitting side of the display substrate is the side that can display the image, and the backlight side is the side that cannot display the image. That is to say, the depth camera module in the embodiment of the present invention can be located below the display substrate 10, that is, it can be set below the screen without destroying the structure of the display substrate 10, such as there is no need to dig a hole in the non-display area at the top of the display substrate 10 to set 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 a light-transmitting area. In some embodiments, the black matrix area further includes a first light-transmitting area and a second light-transmitting area. The light-transmitting area is a circular area with a diameter of less than 1 mm.

In the embodiment of the present invention, the depth camera module includes a flood projector 50, a laser module 11 and an imaging module 12. The laser module 11 and the imaging module 12 are both located on the backlight side of the display substrate 10, and the light outlet of the laser module 11 is arranged toward the display substrate 10, so that the laser can be irradiated onto the object to be photographed located on the light outlet side of the display substrate 10 through the first light transmission area, and the light inlet of the imaging module 12 is arranged toward the display substrate 10, so that the laser reflected by the object to be photographed can penetrate the display area and enter the imaging module 12.

The laser module 11 includes a structured light projector and a projection lens; the projection lens includes a lens assembly 16 and a lamp mirror 19; the structured light projector is used to project structured light to the lens assembly 16, and the structured light includes a plurality of randomly distributed laser beams; the lens assembly 16 is used to converge the plurality of laser beams and then make them incident on the light incident surface of the lamp mirror; the lamp mirror 19 is used to make the incident plurality of laser beams emit in parallel or nearly in parallel so that the laser beams can be irradiated onto the object to be photographed through the first light-transmitting area;

In some embodiments, the depth camera module includes a laser module 11 and an imaging module 12. The laser module 11 and the imaging module 12 are both located on the backlight side of the display substrate 10, and the light outlet of the laser module 11 is arranged toward the display substrate 10, so that the laser can be irradiated onto the object to be photographed located on the light outlet side of the display substrate 10 through the first light-transmitting area, and the light inlet of the imaging module 12 is arranged toward the display substrate 10, so that the laser reflected by the object to be photographed penetrates the display area and enters the imaging module 12.

Among them, the laser module 11 includes a floodlight source and a projection lens; the projection lens includes a lens assembly 16 and a lamp mirror 19; the floodlight source is used to emit floodlight; the lens assembly 16 is used to converge the floodlight and make it incident on the light incident surface of the lamp mirror; the lamp mirror 19 is used to allow the incident floodlight to pass through the light-transmitting area and irradiate the object to be photographed.

The imaging module 12 is used to receive the laser light reflected by the object to be photographed and then penetrate the display area, and obtain a depth image of the surface of the object to be photographed according to the received spot pattern of the laser light reflected by the object to be photographed. The depth image includes depth information of different areas on the surface of the object to be photographed.

In some embodiments, the imaging module 12 includes a second light mirror 1201, a receiving lens 1202, and a light detector array 1203; the light detector array 1203 includes a plurality of light detectors distributed in an array; the light mirror 1201 is used to receive the laser reflected by the object to be photographed through the first light-transmitting area, and after shrinking to the narrowest at the aperture, divergently project it to the receiving lens; the receiving lens 1202 is used to converge parallel lasers incident at the same angle onto the light detector located in the focal plane of the receiving lens; the light detector is used to receive the laser to generate a spot pattern, and obtain a depth image of the surface of the object to be photographed according to the spot pattern. The depth image includes depth information of different areas on the surface of the object to be photographed.

The floodlight projector 50 is used to project floodlight to the object to be photographed through the second light-transmitting area for illumination according to a preset light threshold. The preset light threshold is any value from 10 lux to 50 lux, and preferably the preset light threshold is 10 lux.

In a variation of the present invention, the floodlight projector 50 may also be disposed on the backlight side of the display area, and is used to allow the floodlight to penetrate the display area and illuminate the object to be photographed for illumination according to a preset light intensity threshold.

Since the laser module 11 is arranged on the backlight side of the black matrix area, and the imaging module 12 is arranged on the backlight side of the display area, there is no need to set a non-display area on the top of the display device to install the depth camera module, which will not affect the appearance and full-screen experience of the display device.

Moreover, since the laser module 11 and the imaging module 12 are both arranged on the backlight side of the display substrate 10, there are many possibilities for the arrangement and combination of the laser module 11 and the imaging module 12. Without affecting the aesthetics, the distance between the laser module 11 and the imaging module 12 can be increased to improve the shooting accuracy of the depth camera module. As shown in FIG2a, the laser module 11 and the imaging module 12 can also be arranged in the black matrix area on both sides. As shown in FIG2b, the laser module 11 can also be arranged in the display area on either side of the two sides, and the imaging module 12 can be arranged in the black matrix area on either side of the two sides. As shown in FIG2c, the laser module 11 and the imaging module 12 can also be arranged in the black matrix area on both sides. As shown in FIG2d, the laser module 11 can also be arranged in the display area on either side of the two sides, and the imaging module 12 can be arranged in the black matrix area on either side of the two sides.

Optionally, the light-transmitting area is provided with an infrared film layer; in some embodiments, the first light-transmitting area is provided with a first infrared film layer, and the second light-transmitting area is provided with a second infrared film layer;

The lamp mirror 19 is used to allow the diffused incident infrared flood light to pass through an infrared film layer and a light-transmitting area to illuminate the object to be photographed.

In some embodiments, the lamp mirror 19 is used to make the divergent incident multiple laser beams be emitted in parallel or nearly in parallel so that the laser beams can pass through the first infrared film layer and the first light-transmitting area to irradiate the object to be photographed;

In some embodiments, the lamp mirror 19 is used to receive the laser reflected by the object to be photographed through the first light-transmitting area and the first infrared film layer in sequence, and after shrinking to the narrowest at the aperture, diverge and project to the receiving lens;

The floodlight projector is used to project floodlight to the object to be photographed through the second infrared film layer and the second light-transmitting area for illumination when the light intensity is lower than a preset light intensity threshold.

Optionally, as shown in FIG3 and FIG8 , the laser module includes a light splitting device located between the structured light projector and the projection lens;

The structured light projector uses a laser array 1101 for projecting dot matrix lasers;

The beam splitter 13 is located at the light-emitting side of the laser array 1101 and is used to split the dot-matrix laser emitted by the structured light projector into a plurality of randomly distributed laser beams.

In some embodiments, the floodlight source includes a structured light projector, a light splitting device 13 and a diffuser 21;

The structured light projector uses a laser array 1101 for projecting dot matrix lasers;

The optical splitter 13 is located at the light-emitting side of the laser array 1101 and is used to split the dot-matrix laser emitted by the structured light projector into multiple discretely distributed laser beams.

The diffusion sheet 21 is disposed on the light-emitting side of the light-splitting device, and is used to diffuse the multiple laser beams and make the multiple laser beams emit flood light onto the projection lens.

That is, in the embodiment of the present invention, the display substrate 10 may be a glass substrate, and the inner side of the display substrate 10 is the inner screen 40 of the display device.

In an embodiment of the present invention, as shown in FIGS. 6 and 7 , the depth camera module includes a driving circuit 14 connected to the laser module 11 and the imaging module 12. The driving circuit 14 is used to control the laser module 11 and the imaging module 12 to be turned on or off at the same time, and to control the output optical power of the laser module 11 by controlling the driving current of the laser module 11, so as to control the optical power of the laser passing through the first light-transmitting area by controlling the output optical power of the laser module 11.

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 a 2D image of the object to be captured. The processing module 15 is used to obtain a 3D image of the object to be captured based on the depth image captured by the 3D camera module and the 2D image captured by the 2D imaging module.

It should be noted that in order to set the depth camera module on the backlight side of the display substrate 10, the driving current can be increased through the driving circuit 14, the pulse width of the laser module 11 can be reduced, and the optical power of the laser module 11 can be greatly improved while the total pulse energy of the laser module 11 is basically kept unchanged to meet the optical power limit for human eye safety.

In one embodiment of the present invention, as shown in FIG. 4 and FIG. 9 , the structured light projector includes an edge-emitting laser 1102, a collimating lens 18, a reflecting device 17, and a spectroscopic device 13 located between the laser module and the projection lens; a collimating lens 18 and a reflecting device 17 are also provided between the spectroscopic device 13 and the laser module 11;

The edge emitting laser 1102 is used to project laser light toward the collimating lens;

The collimating lens 18 is located at the light-emitting side of the edge-emitting laser 1102, and is used to collimate the incident laser and emit a collimated light beam;

The reflector 17 is located at the light-emitting side of the collimating lens, and is used to fold the collimated light beam and project it to the beam splitter 13;

The beam splitter 13 is located at the light-emitting side of the reflector 17 and is used to split the collimated light beam projected by the reflector 17 into a plurality of randomly distributed laser beams.

Specifically, the optical splitter 13 will divide the laser emitted by the edge-emitting laser 1102 into a plurality of randomly distributed lasers. When these lasers are irradiated on a plane, a light spot image as shown in FIG. 13 will be formed. When multiple lasers are irradiated on the object to be photographed, the light spot pattern will be deformed or displaced. After the first imaging module captures the light spot pattern on the surface of the object to be photographed, it will obtain a depth image of the surface of the object to be photographed based on the deformation or displacement of the light spot pattern, that is, obtain the depth information of the unevenness of the surface of the object to be photographed. The processing module 15 can obtain a 3D image of the object to be photographed based on the depth image and the 2D image.

The imaging module 12 is a first imaging module, and optionally, the first imaging module is an infrared camera. The first imaging module 12 obtains a depth image of the surface of the object to be photographed according to the received spot pattern of the laser reflected by the object to be photographed.

In some embodiments, the floodlight source includes an edge emitting laser 1102, a collimating lens 18, a reflector 17, a beam splitter 13, and a diffuser 21;

The edge emitting laser 1102 is used to project laser light toward the collimating lens;

The collimating lens 18 is located at the light-emitting side of the edge-emitting laser 1102, and is used to collimate the incident laser and emit a collimated light beam;

The reflector 17 is located at the light-emitting side of the collimating lens, and is used to fold the collimated light beam and project it to the beam splitter 13;

The beam splitter 13 is located at the light-emitting side of the reflector, and is used to split the collimated light beam projected by the reflector 17 into a plurality of discretely distributed laser beams;

The diffusion sheet 21 is disposed on the light-emitting side of the light-splitting device, and is used to diffuse the multiple laser beams and make the multiple laser beams flood-emitted onto the projection lens.

In the embodiment of the present invention, the reflective device 17 may be a reflective mirror or a triangular prism. A reflective film may be coated on the reflective surface of the triangular prism.

In the embodiment of the present invention, as shown in FIG5 , the imaging module 12 includes a receiving lens 1202 and a light detector array 1201 ; the light detector array 1201 includes a plurality of light detectors distributed in an array;

The receiving lens 1202 is used to receive the laser light that is reflected by the object to be photographed and penetrates the display area, and to converge the parallel laser light incident at the same angle onto the upper light detector located on the focal plane of the receiving lens;

The light detector is used to receive the laser to generate a spot pattern, and obtain a depth image of the surface of the object to be photographed according to the spot pattern.

In the embodiment of the present invention, the light detector may be a CMOS or CCD sensor.

In some embodiments, the imaging module 12 includes a second light lens 1201, a receiving lens 1202, and a light detector array 1203; the light detector array 1203 includes a plurality of light detectors distributed in an array;

The second light mirror 1201 is used to receive the laser reflected by the object to be photographed through another light-transmitting area, and after shrinking to the narrowest at the aperture, divergently projects it to the receiving lens.

In some embodiments, the imaging module 12 includes a receiving lens 1202 and a light detector array 1201; the light detector array 1201 includes a plurality of light detectors distributed in an array;

The receiving lens 1202 is used to receive the floodlight reflected by the object to be photographed and penetrate the display area, and to focus the parallel floodlight incident at the same angle onto a light detector located on the focal plane of the receiving lens;

The photodetector array is used to receive the floodlight and obtain a depth image of the surface of the object to be photographed according to the time delay or phase difference of the floodlight.

FIG10 is a schematic diagram of a structure of a projection lens according to an embodiment of the present invention, and FIG11 is another schematic diagram of a structure of a projection lens according to an embodiment of the present invention. As shown in FIGS. 10 and 11 , the projection lens includes a lens assembly 16 and a lamp mirror 19; the structured light projector is used to project structured light to the lens assembly, and the structured light includes a plurality of randomly distributed laser beams; the lens assembly 16 is used to converge the plurality of laser beams and then make them incident on a light incident surface of the lamp mirror 19; the lamp mirror 19 is used to make the incident plurality of laser beams emit in parallel or nearly in parallel so that the laser beams can irradiate the object to be photographed through the first light-transmitting area;

In the embodiment of the present invention, the nearly parallel means that the angle between the two laser beams is less than a preset angle threshold, and the angle threshold can be set to 5°. The parallelism of multiple laser beams means that multiple laser beams form multiple groups of laser beams, and the multiple laser beams in each group of laser beams are parallel to each other.

In the embodiment of the present invention, the lens assembly 16 includes a first lens 1601, a second lens 1602 and a lens barrel 1604; the first lens 1601 and the second lens 1602 are sequentially arranged on the light-entering side of the lens barrel; the lamp mirror 19 is arranged on the light-exiting side of the lens barrel; the first lens 1601 is used to converge the multiple laser beams and project them to the second lens; the second lens 1602 is used to converge the multiple laser beams projected by the first lens again and project them to the light-entering surface of the lamp mirror. The lens barrel 1604 is used to assemble and fix the first lens 1601, the second lens 1602 and the lamp mirror 19 into one body. A concave light entrance is arranged on the light-entering side of the lamp mirror 19; the bottom surface of the light entrance is the light entrance surface; the light entrance surface is a convex surface; the aperture of the projection lens is arranged on the convex surface. The light entrance surface is used to make the multiple incident laser beams exit in parallel or nearly in parallel to form an image at a position at infinity or a specified distance away.

In some embodiments, the lamp mirror 19 is used to make the incident multiple laser beams shrink to the narrowest at the aperture and then diverge and project to the receiving lens; the receiving lens 16 is used to converge the parallel laser beams incident at the same angle onto the light detector located at the focal plane of the receiving lens;

The receiving lens 16 includes a first lens 1601, a second lens 1602 and a lens barrel 1604; a concave light outlet is provided on the light outlet side of the lamp mirror 19; the bottom surface of the light outlet is the light outlet surface; the light outlet surface is a convex surface; the aperture of the lamp mirror 19 is provided on the convex surface. The light outlet surface is used to make the multiple laser beams of the incident multiple laser beams diverge and emit. The second lens 1602 and the first lens 1601 are sequentially arranged on the light outlet side of the lens barrel; the lamp mirror 19 is arranged on the light entrance side of the lens barrel; the second lens 1602 is used to converge the multiple laser beams projected by the lamp mirror 19 and project them onto the light entrance surface of the first lens 1601; the first lens 1601 is used to converge the multiple laser beams projected by the second lens 1602 again and project them onto the light detector array. The lens barrel 1604 is used to assemble and fix the first lens 1601, the second lens 1602 and the lamp mirror 19 into one body.

In an embodiment of the present invention, since the depth camera module is installed under a narrow light-emitting gap, the position of the aperture, i.e., the position where the light beam is narrowest, should be in the middle of the height of the narrow gap. Then, without blocking the light on the upper and lower sides, the lens can achieve the maximum field of view.

When the projection lens is located on the backlight side of the display substrate 10, it is necessary to fill the lamp mirror 19 between the lens assembly 16 and the display substrate 10. As the area available for light transmission is smaller, it is necessary to place the convergence point of the light from the projection lens, i.e., the aperture, at the position of the lamp mirror 19. Therefore, the diameter of the projection lens needs to be larger so that the outgoing light with a certain angle can converge at a specified position after propagating a certain distance. Making the lower surface of the lamp mirror 19 convex and placing the aperture of the projection lens on the convex surface can allow the lamp mirror 19 to bear part of the optical focal length, which is equivalent to a convex lens. At the same time, reducing the angle of the light emitted from the lens below the lamp mirror 19 can reduce the effective aperture of the projection lens, thereby reducing the size of the entire system.

In the embodiment of the present invention, the upper surface of the lamp mirror 19 is in close contact with the lower surface of the display substrate 10, the boss structure on the upper part of the lamp mirror 19 is in close contact with the lower surface of the inner screen 40, and the lower edge of the lamp mirror 19 is in close contact with the projection lens barrel, which is convenient for assembly and testing.

A spacer ring is disposed between the first lens 1601 and the second lens 1602 , and the spacer ring 1603 is used to fix the relative position between the first lens 2 and the second lens 4 .

In the embodiment of the present invention, a boss structure is provided on the light-emitting side of the lamp mirror; the end face of the boss structure is the light-emitting surface. The first lens 1601 and the second lens 1602 are convex lenses. The light-entering side of the lamp mirror 19 is fitted with the second lens 1602. The lamp mirror 19 is made of optical plastic material, which can not only realize the function of taking on the optical focal length, but also realize the dust-proof function between the projection lens and the display substrate 10.

In a modified example of the present invention, a spacer frame 1605 is disposed on the lens barrel 1604 ; the second lens 1602 is disposed on one side of the spacer frame 1605 , and the lens barrel 1604 is disposed on the other side of the spacer frame 1605 .

In an embodiment of the present invention, the light incident on the first lens 1601 can be projected by any light projector, such as a structured light projector or an edge-emitting laser to project a pattern. The structured light emitted by the light projector can be a plurality of parallel telecentric light beams or a light beam whose main light has a certain angle.

In the embodiment of the present invention, the optical splitter 13 may be a waveguide device, a nanophotonic chip, a diffraction grating (Diffractive Optics Element, DOE) or a coded structured optical mask, etc., but the present invention is not limited thereto.

FIG12 is a schematic diagram of the installation of a 3D camera in an embodiment of the present invention. As shown in FIG12 , when the display device with a 3D camera module provided by the present invention is implemented, the floodlight projector 50 and the laser module 11 are installed on the backlight side of the display substrate 10, and the imaging module 12 and the RGB camera 60 are installed on the backlight side of the inner screen.

An embodiment of the present invention further provides an electronic device, which includes the display device provided by any of the above embodiments, and the electronic device can be a mobile phone, a tablet computer, a digital camera, etc. The electronic device with a 3D camera module provided by the present invention does not need to set a non-display area on the top of the display device to install the depth camera module, and the appearance is more beautiful and more conducive to achieving a full-screen experience.

In the embodiment of the present invention, the light is converged onto the lamp mirror through the first lens and the second lens of the lens assembly, and the aperture is located on the light incident surface of the lamp mirror, so that the depth camera module equipped with the projection lens is suitable for installation in a narrow gap without blocking the FOV, such as realizing the application of the present invention on a narrow-frame screen (a screen with a narrow black matrix area), and the lamp mirror can also be close to the glass cover of the mobile phone to play a dust-proof role; the display device and electronic device with a 3D camera module provided in the embodiment of the present invention set the laser module on the backlight side of the black matrix area of the display substrate, and set the imager module on the backlight side of the display area of the display substrate, so that there is no need to set a non-display area, i.e., a fringe area, on the top of the display device to install the depth camera module, thereby not affecting the beauty of the display device and the full-screen experience; in the embodiment of the present invention, an infrared film layer is set in the light-transmitting area of the black matrix area, and the infrared film layer can transmit infrared light and thus will not affect the operation of the depth camera module, but visible light cannot pass through the infrared film layer, thereby ensuring the integrity of the black matrix area and not affecting the beauty of the display screen.

In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown in this article, but will comply with the widest range consistent with the principles and novel features disclosed herein.

In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown in this article, but will comply with the widest range consistent with the principles and novel features disclosed herein.

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

Claims (10)

1. The display device with the 3D camera module is characterized by comprising a display substrate and the 3D camera module;

The display substrate includes a display region and a black matrix region surrounding the display region; the black matrix region includes a first light-transmitting region;

The 3D camera module comprises a depth camera module; the depth camera module comprises a laser module and an imaging module; the laser module is positioned on the backlight side of the black matrix area; the imaging module is positioned on the backlight side of the display area;

the laser module comprises a structured light projector and a projection lens; the projection lens comprises a lens assembly and a lamp mirror; the structured light projector is used for projecting structured light to the lens assembly, and the structured light comprises a plurality of laser lights which are randomly distributed; the lens assembly is used for converging the plurality of laser beams and then making the laser beams incident to the light incident surface of the lamp mirror; the lamp mirror is used for enabling the incident multiple laser beams to irradiate on an object to be shot through the first light transmission area;

The light incident side of the lamp mirror is provided with a concave light incident port;

the bottom surface of the light inlet is a light inlet surface; the light incident surface is a convex surface; the diaphragm of the projection lens is arranged on the convex surface;

the light incident surface is used for enabling the incident multiple laser beams to exit in parallel or nearly in parallel;

the imaging module is used for receiving the laser which penetrates through the display area after being reflected by the object to be shot, and obtaining a depth image of the surface of the object to be shot according to the received light spot pattern of the laser reflected by the object to be shot.

2. The display device of claim 1, wherein the first light transmissive region is provided with a first infrared film layer;

the lamp mirror is used for enabling the divergent incidence of the plurality of laser beams to irradiate on an object to be shot through the first infrared film layer and the first light transmission area.

3. The display device according to claim 1, wherein the lens assembly includes a first lens, a second lens, and a lens barrel;

The first lens and the second lens are sequentially arranged on the light incident side of the lens barrel; the lamp mirror is arranged on the light emitting side of the lens barrel;

The first lens is used for converging the plurality of laser beams and projecting the converged laser beams to the second lens;

the second lens is used for converging the plurality of laser beams projected by the first lens again and then projecting the converged laser beams to the light incident surface of the lamp mirror.

4. The display device with the 3D camera module is characterized by comprising a display substrate and the 3D camera module;

The display substrate includes a display region and a black matrix region surrounding the display region; the black matrix region includes a first light-transmitting region;

the 3D camera module comprises a depth camera module; the depth camera module comprises a laser module and an imaging module; the laser module is positioned on the backlight side of the display area; the imaging module is positioned on the backlight side of the black matrix area;

The laser module comprises a structured light projector and a projection lens; the structure light projector is used for projecting structure light to the projection lens, wherein the structure light comprises a plurality of randomly distributed laser beams; the projection lens is used for penetrating the incident multiple laser beams into the display area and irradiating the multiple laser beams onto an object to be photographed;

The imaging module comprises a lamp mirror, a receiving lens and a light detector array; the light detector array comprises a plurality of light detectors distributed in an array; the lamp mirror is used for receiving laser reflected by the object to be shot through the first light transmission area, and divergently projecting the laser to the receiving lens after the laser is contracted to the narrowest at the diaphragm; the receiving lens is used for converging parallel laser beams incident at the same angle on the optical detector positioned on the focal plane of the receiving lens; the optical detector is used for receiving the laser to generate a light spot pattern and obtaining a depth image of the surface of the object to be shot according to the light spot pattern.

5. The display device of claim 4, wherein the first light transmissive region is provided with a first infrared film layer;

The lamp mirror is used for sequentially receiving laser reflected by the object to be shot through the first light transmission area and the first infrared film layer, and divergently projecting the laser to the receiving lens after the laser is contracted to the narrowest at the diaphragm.

6. The display device with the 3D camera module is characterized by comprising a display substrate and the 3D camera module;

the display substrate includes a display region and a black matrix region surrounding the display region; the black matrix region includes a light-transmitting region;

The 3D camera module comprises a depth camera module; the depth camera module comprises a laser module and an imaging module; the laser module is positioned on the backlight side of the black matrix area; the imaging module is positioned on the backlight side of the display area;

The laser module comprises a floodlight source and a projection lens; the projection lens comprises a lens assembly and a lamp mirror; the floodlight source is used for emitting floodlight; the lens component is used for converging the floodlight and then making the floodlight enter the light incident surface of the lamp mirror; the lamp mirror is used for enabling the incident floodlight to irradiate on an object to be shot through the light transmission area;

The light incident side of the lamp mirror is provided with a concave light incident port;

the bottom surface of the light inlet is a light inlet surface; the light incident surface is a convex surface; the diaphragm of the projection lens is arranged on the convex surface;

the light incident surface is used for enabling the incident floodlight to exit in parallel or nearly in parallel;

The imaging module is used for receiving floodlight which penetrates through the display area after being reflected by the object to be shot, and obtaining a depth image of the surface of the object to be shot according to the delay or the phase difference of the floodlight.

7. The display device according to claim 6, wherein the light-transmitting region is provided with an infrared film layer;

the lamp mirror is used for enabling the scattered incident floodlight to irradiate on an object to be shot through an infrared film layer and a light transmission area.

8. The display device with the 3D camera module is characterized by comprising a display substrate and the 3D camera module;

the display substrate includes a display region and a black matrix region surrounding the display region; the black matrix region includes a light-transmitting region;

the 3D camera module comprises a depth camera module; the depth camera module comprises a laser module and an imaging module; the laser module is positioned on the backlight side of the display area; the imaging module is positioned on the backlight side of the black matrix area;

The laser module comprises a floodlight source and a projection lens; the floodlight source is used for emitting floodlight; the projection lens is used for penetrating the incident floodlight into the display area and irradiating the floodlight onto an object to be photographed;

The imaging module comprises a lamp mirror, a receiving lens and a light detector array; the light detector array comprises a plurality of light detectors distributed in an array; the lamp mirror is used for receiving the floodlight reflected by the object to be shot through the light transmission area, and divergently projecting the floodlight to the receiving lens after the floodlight is contracted to the narrowest at the diaphragm; the receiving lens is used for converging parallel floodlights incident at the same angle on the optical detector positioned on the focal plane of the receiving lens; and the light detector array is used for obtaining the depth image of the surface of the object to be shot according to the time delay or the phase difference of the floodlight.

9. The display device according to claim 8, wherein the light-transmitting region is provided with an infrared film layer;

The lamp mirror is used for sequentially receiving floodlight reflected by the object to be shot through the light transmission area and the infrared film layer, and divergently projecting the floodlight to the receiving lens after the floodlight is contracted to the narrowest at the diaphragm.

10. An electronic device comprising the display device according to any one of claims 1 to 9.