CN215871662U - Display device and electronic equipment with 3D module of making a video recording - Google Patents

Abstract

The utility model provides a display device with a 3D camera module and electronic equipment, comprising a display substrate; the display substrate comprises a display area and a black matrix area surrounding the display area; the black matrix region includes at least two light transmissive regions; the 3D camera module comprises a depth camera module positioned on the backlight side of the black matrix area; the depth camera module comprises a laser module; the laser module comprises a structured light projector and a projection lens; the projection lens comprises a lens component and a lamp mirror; a structured light projector for projecting structured light towards the lens assembly, the structured light comprising a plurality of randomly distributed laser beams; the lens assembly is used for converging a plurality of laser beams and then transmitting the laser beams to the light incident surface of the lamp mirror; and the lamp mirror is used for enabling a plurality of incident laser beams to be emitted in parallel or to be emitted nearly in parallel so as to enable the laser beams to irradiate the object to be shot through a light transmission area. The utility model can make the depth camera module with the projection lens suitable for being installed in a narrow gap without being shielded by the FOV.

Description

Display device and electronic equipment with 3D module of making a video recording

Technical Field

The utility model relates to the technical field of display, in particular to a display device with a 3D camera module and electronic equipment.

Background

With the development of the market, the requirements of consumers on the display effect of the display screen are more and more stringent, and the requirements are not only on diversified appearance designs, but also on the requirement that the screen ratio is higher and better. The full screen technology realizes the screen occupation ratio of more than 90 percent by the design of an ultra-narrow frame or even no frame.

The mobile phone with the comprehensive screen realizes the maximization of the display area under the condition that the mobile phone body is not changed, so that the display effect is more brilliant. Present structural design based on full face screen, in order to install devices such as degree of depth camera module among the 3D camera module, set up the non-display area at display substrate's top, bang district promptly, however, still can influence display device's pleasing to the eye and the experience of full face screen like this.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a display device and an electronic apparatus having a 3D camera module, so as to solve the problem that the non-display area of the existing depth camera module affects the beauty and the overall screen experience of the display device.

In order to achieve the purpose, the utility model provides the following technical scheme:

the display device with the 3D camera module comprises a display substrate and the 3D camera module;

the display substrate comprises a display area and a black matrix area surrounding the display area; the black matrix region includes at least two light transmissive regions;

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

the laser module comprises a light path modulator, a structured light projector and a projection lens; the projection lens comprises a lens component and a lamp mirror; the structured light projector is used for projecting structured light to the lens component, and the structured light comprises a plurality of laser beams which are distributed randomly; the light path modulator is used for modulating the structured light of the structured light projector to output structured light or floodlight; the lens assembly is used for converging the structured light or the floodlight and then enabling the structured light or the floodlight to be incident to the light incident surface of the lamp mirror; the lamp mirror is used for enabling the incident structured light or floodlight to irradiate on an object to be shot through a light transmission area;

the imaging module is used for receiving the structural light or floodlight reflected by the object to be shot through another light transmission area, and obtaining a depth image of the surface of the object to be shot according to the received structural light reflected by the object to be shot, or obtaining a two-dimensional image of the surface of the object to be shot according to the received floodlight reflected by the object to be shot.

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

the lamp mirror is used for enabling the diffused and incident infrared structural light or infrared floodlight to penetrate through an infrared film layer and a light transmission area to irradiate on an object to be shot;

the imaging module is used for receiving the infrared structural light or the infrared floodlight reflected by the object to be shot through another infrared film layer and another light transmission area, and obtaining the depth image of the surface of the object to be shot according to the infrared structural light or obtaining the infrared image of the surface of the object to be shot according to the received infrared floodlight reflected by the object to be shot.

Preferably, 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 projecting the structured light or the floodlight after being converged to the second lens;

and the second lens is used for converging the structured light or floodlight projected by the first lens again and projecting the converged structured light or floodlight to the light incident surface of the lamp mirror.

Preferably, a concave light inlet is arranged on the light inlet side of the lamp mirror;

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 structured light or floodlight to be emitted in parallel or to be emitted nearly in parallel.

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

the structured light projector adopts a laser array and is used for projecting dot matrix laser;

the light splitting device is positioned on the light emitting side of the laser array and used for splitting the lattice 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 between the laser module and the display substrate;

the edge-emitting laser is used for projecting laser to the collimating lens;

the collimating lens is positioned on the light-emitting side of the edge-emitting laser and is used for collimating the incident laser and emitting a collimated light beam;

the reflecting device is positioned on the light-emitting side of the collimating lens and used for reflecting the collimated light beam and projecting the collimated light beam to the light splitting device;

the light splitting device is positioned on the light emitting side of the reflecting device and used for splitting the collimated light beams projected by the reflecting device into a plurality of laser beams which are distributed randomly.

Preferably, the depth camera module comprises a driving circuit connected with the laser module and the imaging module;

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

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

the liquid crystal modulator includes: the first substrate and the second substrate are oppositely arranged;

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

wherein the liquid crystal layer is in a transparent state or a diffused state by controlling the deflection of liquid crystals in the liquid crystal layer;

when the liquid crystal layer is in a transparent state, the structured light projector projects structured light through the light path modulator; and when the liquid crystal layer is in a diffusion state, the structured light projector projects floodlight through the light path modulator.

Preferably, the light splitting device is a waveguide device, a nano-photonic chip, a diffraction grating or a coding structure photomask.

Preferably, the depth camera module comprises a processing module; the 3D camera module further comprises a 2D imaging module;

the 2D imaging module is used for shooting a 2D image of the object to be shot;

preferably, the imaging module comprises a second 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 second lamp mirror is used for receiving the laser reflected by the object to be shot through the other light-transmitting area, and after the laser is contracted to the narrowest position at the diaphragm, the laser is divergently projected to the receiving lens;

the receiving lens is used for converging the parallel laser beams incident at the same angle on the optical detector positioned on the focal plane of the receiving lens;

the light detector array is used for receiving the structured light 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, or obtaining a two-dimensional image of the surface of the object to be shot according to received floodlight reflected by the object to be shot.

And the processing module is used for obtaining a 3D image of the object to be shot according to the depth image and the 2D image.

The electronic equipment provided by the utility model comprises the display device.

Compared with the prior art, the utility model has the following beneficial effects:

the projection lens of the utility model converges light to the lamp lens through the first lens and the second lens of the lens component, and the diaphragm is positioned on the light incident surface of the lamp lens, so that the depth camera module with the projection lens is suitable for being installed in a narrow gap without being shielded by FOV, thus realizing the application of the utility model on a narrow-frame screen (a narrow screen with a black matrix area), and also being capable of enabling the lamp lens to be tightly attached to a mobile phone glass cover plate to play a dustproof role;

according to the display device and the electronic equipment with the 3D camera module, the depth camera module is arranged on the backlight side of the black matrix area of the display substrate, so that a non-display area, namely a sea area, does not need to be arranged at the top of the display device, the depth camera module is installed, and the attractiveness and the comprehensive screen experience of the display device cannot be influenced;

according to the utility model, the infrared film layer is arranged in the light transmission area of the black matrix area, the infrared film layer can transmit infrared light so as not to influence the work of the depth camera module, but visible light cannot penetrate through the infrared film layer, so that the integrity of the black matrix area is ensured, and the attractiveness of a display screen is not influenced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a display device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a display device according to a variation of the present invention;

FIG. 3 is a schematic view of an installation of a laser module according to an embodiment of the present invention;

FIG. 4 is another schematic illustration of an installation of a laser module in an embodiment of the utility model;

FIG. 5 is a schematic view of an imaging module in an embodiment of the utility model;

FIG. 6 is a schematic view of an installation of a depth camera module according to a variation of the present invention;

FIG. 7 is a schematic view of another installation of a depth camera module according to a variation of the present invention;

FIG. 8 is a schematic diagram of a display device based on an EEL laser according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a VCSEL laser based display device in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a display device according to a first embodiment of the utility model;

fig. 11 is a schematic structural diagram of a display device according to a second embodiment of the utility model;

FIG. 12 is a schematic diagram of a projection lens according to an embodiment of the disclosure;

FIG. 13 is a schematic diagram of another structure of a projection lens according to an embodiment of the present invention;

FIG. 14 is a spot diagram of multiple lasers in accordance with an embodiment of the present invention;

FIG. 15 is a schematic diagram of an output light of a laser module according to an embodiment of the present invention;

fig. 16 is a schematic diagram of another output light of the laser module in the embodiment of the present invention.

In the figure:

10 is a display substrate; 11 is a laser module; 12 is an imaging module; 1201 is a second lamp mirror; 1202 is receiving lens; 1203 is a photodetector array; 13 is a light splitting device; 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 space ring; 1604 is a lens barrel; 1605 is a bulkhead; 17 is a reflecting device; 18 is a collimating lens; 19 is a lamp mirror; 20 is a black matrix region; 30 is a display area; 40 is an inner screen; 101 is a structured light projector; 102 is an optical path modulator.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the utility model. All falling within the scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. The connection may be for fixation or for circuit connection.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As described in the background art, in the existing structural design based on a full-face screen, in order to install devices such as a depth camera module in a 3D camera module, a non-display area, i.e., a bang area, is disposed at the top of a display substrate, but this may affect the beauty and the overall screen experience of the display device.

The utility model discloses people research discovery, current degree of depth camera module all adopts Vertical Cavity Surface Emitting Laser (VCSEL) as the light source, however, because the output optical power of VCSEL Laser is lower, when display substrate's transmissivity is lower, the optical power of Laser behind the display panel is lower, can not obtain effective depth image, consequently, need set up non-display area promptly the Liuhai district at display substrate's top, and dig the hole and install the VCSEL Laser to non-display area.

Based on this, the utility model provides a display device with a 3D camera module to overcome the above problems in the prior art, 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 region includes at least two light transmissive regions;

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

the laser module comprises a light path modulator, a structured light projector and a projection lens; the projection lens comprises a lens component and a lamp mirror; the structured light projector is used for projecting structured light to the lens component, and the structured light comprises a plurality of laser beams which are distributed randomly; the light path modulator is used for modulating the structured light of the structured light projector to output structured light or floodlight; the lens assembly is used for converging the structured light or the floodlight and then enabling the structured light or the floodlight to be incident to the light incident surface of the lamp mirror; the lamp mirror is used for enabling the incident structured light or floodlight to irradiate on an object to be shot through a light transmission area;

the imaging module is used for receiving the structural light or floodlight reflected by the object to be shot through another light transmission area, and obtaining a depth image of the surface of the object to be shot according to the received structural light reflected by the object to be shot, or obtaining a two-dimensional image of the surface of the object to be shot according to the received floodlight reflected by the object to be shot.

The projection lens of the utility model converges light rays to the lamp lens through the first lens and the second lens of the lens component, and the diaphragm is positioned on the light incident surface of the lamp lens, so that the depth camera module with the projection lens is suitable for being installed in a narrow gap without being shielded by FOV, thus realizing the application of the utility model on a narrow-frame screen (a narrow screen with a black matrix area), and also being capable of enabling the lamp lens to be tightly attached to a mobile phone glass cover plate to play a dustproof role.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the above is the core idea of the present invention, and the above objects, features and advantages of the present invention can be more clearly understood. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a display device with a 3D camera module, as shown in fig. 1, including a display substrate 10 and a 3D camera module, where the 3D camera module includes a depth camera module located on a 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 employs an infrared laser that emits infrared laser. The laser module adopts a laser array, an edge emitting laser and a semiconductor laser.

The light-emitting side of the display substrate is a side capable of displaying images, and the backlight side is a side incapable of displaying images. That is, the depth camera module in the embodiment of the utility model may be located below the display substrate 10, i.e., may be disposed below the screen, without damaging the structure of the display substrate 10, for example, without digging a hole in the non-display area on the top of the display substrate 10 to dispose the depth camera module. The display substrate comprises a display area and a black matrix area surrounding the display area; the black matrix region includes at least two light transmissive regions. The light-transmitting area is a circular area with the diameter smaller than 1 millimeter.

In the embodiment of the present invention, 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 disposed toward the display substrate 10, so that laser can irradiate an object to be photographed located on the light outlet side of the display substrate 10 through a light-transmitting area, and the light inlet of the imaging module 12 is disposed toward the display substrate 10, so that laser reflected by the object to be photographed enters the imaging module 12 after passing through another light-transmitting area.

Wherein the laser module 11 comprises an optical path modulator 102, a structured light projector and a projection lens; the projection lens comprises a lens assembly 16 and a lamp mirror 19; the structured light projector is used for projecting structured light to the lens component, and the structured light comprises a plurality of laser beams which are distributed randomly; the light path modulator 102 is configured to modulate the structured light of the structured light projector to output structured light or floodlight; the lens assembly 16 is used for converging the structured light or the floodlight and then enabling the converged structured light or floodlight to enter the light incident surface of the lamp mirror; the lamp mirror 19 is used for enabling the incident structured light or floodlight to be emitted in parallel or to be emitted in a near-parallel mode so that the structured light or floodlight can be irradiated onto an object to be shot through a light transmission area;

the imaging module 12 is configured to receive the structured light or floodlight reflected by the object to be photographed through another light-transmitting area, and obtain a depth image of the surface of the object to be photographed according to the received structured light of the laser reflected by the object to be photographed. The depth image comprises depth information of different areas of the surface of the object to be photographed. Or obtaining a two-dimensional image of the surface of the object to be shot according to the received floodlight reflected by the object to be shot. The two-dimensional map may be an infrared image or an RGB image.

Because the laser module 11 and the imaging module 12 are arranged on the backlight side of the black matrix area, a non-display area is not required to be arranged at the top of the display device to install the depth camera module, and the attractiveness and the overall screen experience of the display device cannot be influenced.

Moreover, since the laser module 11 and the imaging module 12 are both disposed on the backlight side of the display substrate 10, the arrangement and combination of the laser module 11 and the imaging module 12 have multiple possibilities, and the distance between the laser module 11 and the imaging module 12 can be increased on the premise of not affecting the beauty, so as to improve the shooting accuracy of the depth camera module, as shown in fig. 2, the laser module 11 and the imaging module 12 can be disposed in the black matrix areas on both sides, respectively.

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

the lamp mirror 19 is used for enabling divergent incident infrared structural light or infrared floodlight to be emitted in parallel or to be emitted in a near-parallel mode so that the laser can penetrate through an infrared film layer and a light transmission area to irradiate on an object to be shot;

the imaging module 12 is an infrared camera, and is configured to receive the infrared structured light or the infrared floodlight reflected by the object to be photographed through another infrared film layer and another light-transmitting area, and obtain the depth image of the surface of the object to be photographed according to the infrared structured light, or obtain the infrared image of the surface of the object to be photographed according to the received infrared floodlight reflected by the object to be photographed.

Optionally, as shown in fig. 3, 6, 10, the laser module comprises a light splitting device between the structured light projector and the optical path modulator;

the structured light projector adopts a laser array 1101 for projecting dot matrix laser;

the light splitting device 13 is located on the light emitting side of the laser array and is configured to split the lattice laser emitted by the structured light projector into a plurality of randomly distributed laser beams.

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

In the embodiment of the present invention, as shown in fig. 8 and 9, 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 configured to control the laser module 11 and the imaging module 12 to be turned on or off simultaneously, and 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 a light-transmitting area by controlling the output optical power of the laser module 11.

Further, the depth camera module further comprises a processing module 15, and the 3D camera module further comprises a 2D imaging module. The 2D imaging module is used for shooting a 2D image of an object to be shot. The processing module 15 is used for obtaining a 3D image of the object to be shot according to the depth image shot by the 3D camera module and the 2D image shot 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 circuit 14 may increase the driving current, reduce the pulse width of the laser module 11, and greatly increase the optical power of the laser module 11, while the total pulse energy of the laser module 11 is kept unchanged, so as to meet the optical power limitation of human eye safety.

In one embodiment of the present invention, as shown in fig. 4, 7 and 11, the structured light projector includes an edge-emitting laser 1102, a collimating lens 18, a reflecting device 17 and a light splitting device 13 between the laser module and the optical path modulator; a collimating lens 18 and a reflecting device 17 are arranged between the light splitting device 13 and the laser module 11;

the edge-emitting laser 1102 is configured to project laser light to the collimator lens;

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

the reflecting device 17 is located on the light-emitting side of the collimating lens 18, and is configured to fold the collimated light beam and project the collimated light beam to the light splitting device 13;

the light splitting device 13 is located on the light-emitting side of the reflecting device 17, and is configured to split the collimated light beam projected by the reflecting device 17 into multiple laser beams which are randomly distributed.

Specifically, the light splitting device 13 divides the laser light emitted by the edge-emitting laser 1102 into a plurality of laser light which are randomly distributed, and when the laser light is irradiated on a plane, a light spot image as shown in fig. 14 is formed, when the plurality of laser light is irradiated on an object to be photographed, the light spot pattern is deformed or displaced, and after the first imaging module photographs the light spot pattern on the surface of the object to be photographed, a depth image of the surface of the object to be photographed is obtained according to the deformation or displacement of the light spot pattern, that is, the depth information of the surface of the object to be photographed is obtained. The processing module 15 can obtain a 3D image of the object to be photographed according to the depth image and the 2D image.

In the embodiment of the present invention, the reflecting device 17 may adopt a mirror or a triangular prism. The reflecting surface of the triangular prism can be plated with a layer of reflecting film.

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 light reflected by the object to be photographed.

In the embodiment of the present invention, as shown in fig. 5, 6, and 7, the imaging module 12 includes a second lamp mirror 1201, a receiving lens 1202, and a photo detector array 1203; the photo detector array 1203 comprises a plurality of photo detectors distributed in an array;

the second light mirror 1201 is used for receiving the structured light or floodlight reflected by the object to be shot through another light transmission area, and divergently projecting the structured light or floodlight to the receiving lens after the structured light or floodlight is contracted to the narrowest position at the diaphragm;

the receiving lens 1202 is configured to converge parallel laser beams incident at the same angle on a light detector located in a focal plane of the receiving lens;

the light detector array is used for receiving the structured light 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, or obtaining a two-dimensional image of the surface of the object to be shot according to received floodlight reflected by the object to be shot.

In the embodiment of the utility model, the light detector can adopt a CMOS or CCD sensor.

Fig. 12 is a schematic structural diagram of a projection lens according to an embodiment of the present invention, and fig. 13 is another schematic structural diagram of a projection lens according to an embodiment of the present invention, as shown in fig. 12 and 13, the projection lens includes a lens assembly 16 and a lamp mirror 19; the lens assembly 16 is used for condensing the structured light or the floodlight and then making the condensed structured light or the floodlight incident on the light incident surface of the light mirror 19; the lamp mirror 19 is used for enabling the incident structured light or floodlight to be emitted in parallel or to be emitted in a near-parallel mode so that the laser can be irradiated onto an object to be shot through a light transmission area;

in the embodiment of the present invention, the angle between the two laser beams is smaller than a preset angle threshold, and the angle threshold may be set to be 5 °. The multiple laser beams are parallel, namely 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 incident side of the lens barrel; the lamp mirror 19 is arranged on the light-emitting side of the lens barrel; the first lens 1601 is used for projecting the structured light or the floodlight after being converged to the second lens; the second lens 1602 is configured to converge the structured light or the floodlight projected by the first lens again and project the converged structured light or the floodlight to the light incident surface of the light mirror. The lens barrel 1604 is used for integrally assembling and fixing the first lens 1601, the second lens 1602 and the lamp mirror 19. A concave light inlet is arranged on the light inlet side of the lamp mirror 19; the bottom surface of the light inlet is a light inlet surface; the light incident surface is a convex surface; and the diaphragm of the projection lens is arranged on the convex surface. The light incident surface is used for enabling the incident structured light or floodlight to be emitted in parallel or to be emitted in a near-parallel mode so as to form an image at a specified distance position at infinity or a distance.

In the embodiment of the utility model, because the depth camera module is arranged under the narrow gap for emitting light, the position of the diaphragm, namely the position of the narrowest light beam, is the position in the middle of the height of the narrow gap, the lens can reach the largest angle of field under the condition that the upper side and the lower side can not shield the light.

When the projection lens is located on the backlight side of the display substrate 10, a lamp mirror 19 needs to be filled between the lens assembly 16 and the display substrate 10. Since the area available for light transmission is smaller in size, the convergence point of the light of the projection lens, i.e., the diaphragm, needs to be placed at the position of the lamp mirror 19, and then the diameter of the projection lens needs to be larger, so that the emergent light with a certain angle can be converged at a specified position after being transmitted for a certain distance. The lower surface of the lamp lens 19 is made into a convex surface, and the diaphragm of the projection lens is placed on the convex surface, so that the lamp lens 19 can bear part of focal power, which is equivalent to a convex lens, and meanwhile, the angle of emergent light rays from the lens below the lamp lens 19 is reduced, the effective caliber of the projection lens can be reduced, and further, the size of the whole system is reduced.

In the embodiment of the utility model, the upper surface of the lamp mirror 19 is tightly attached to the lower surface of the display substrate 10, the boss structure on the upper part of the lamp mirror 19 is tightly attached to the lower surface of the inner screen 40, and the lower edge of the lamp mirror 19 is tightly attached to the projection lens barrel, so that the assembly and the test are convenient.

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

In the embodiment of the utility model, a boss structure is arranged on the light emergent side of the lamp mirror; the end face of the boss structure is a light-emitting face. The first lens 1601 and the second lens 1602 are convex lenses. The light incident side surface of the lamp mirror 19 is attached to the second lens 1602. The lamp lens 19 is made of optical plastic materials, so that the function of bearing focal power can be realized, and the dustproof function between the projection lens and the display substrate 10 can also be realized.

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

In the embodiment of the present invention, the light incident from the first lens 1601 may be projected by any light projector, such as a structured light projector, an edge emitting laser, to project a pattern. The structured light emitted by the light projector can be a plurality of parallel telecentric beams or beams with the chief rays having certain angles.

In the embodiment of the present invention, the light splitter 13 may be a waveguide device, a nano-photonic chip, or a diffraction grating (DOE) or a photomask with a code structure, and the present invention is not limited thereto.

Fig. 15 is a schematic diagram of one output light of a laser module in an embodiment of the utility model, and fig. 16 is a schematic diagram of another output light of a laser module in an embodiment of the utility model, the laser module including a structured light projector 101 and an optical path modulator 102; the light path modulator 102 is arranged on the light emitting side of the structured light projector 101; the light path modulator 102 is configured to modulate the output light of the structured light projector 101, so that the output light outputs structured light or outputs floodlight;

the optical path modulator 102 is a liquid crystal modulator;

the liquid crystal modulator includes: the first substrate and the second substrate are oppositely arranged;

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

wherein the liquid crystal layer is in a transparent state or a diffusive state by controlling the deflection of liquid crystals in the liquid crystal layer. When the liquid crystal layer is in a transparent state, the structured light projector 101 projects structured light through the optical path modulator 102; when the liquid crystal layer is in a diffusing state, the structured light projector 101 projects floodlight through the light path modulator 102.

In an embodiment of the present invention, the liquid crystal layer includes liquid crystal and polymer, and is classified into three categories: polymer dispersed liquid crystals, polymer stabilized liquid crystals and polymer network liquid crystals, wherein polymer dispersed liquid crystals have a higher percentage of monomer composition, such as greater than 20 wt%, while polymer stabilized liquid crystals have a lower percentage of monomer, such as less than <10 wt%, and polymer network liquid crystals have a moderate percentage of monomer, such as 10 wt% to 20 wt%. Due to the anchoring effect of the polymer network, polymer dispersed liquid crystals, polymer stabilized liquid crystals and polymer network liquid crystals provide relatively fast response times, provide greater flexibility and richer functionality compared to pure nematic liquid crystals.

In one embodiment of the present invention, the liquid crystal layer comprises a metastable liquid crystal material; the metastable liquid crystal material has a molecular orientation in response to an applied voltage. The voltage applied to the liquid crystal layer is any voltage between 1V and 50V to control the deflection of liquid crystals in the liquid crystal layer.

By placing a liquid crystal layer between two transparent and electrically conductive substrates, the optical properties of the liquid crystal polymer layer can be changed by applying a voltage across the liquid crystal layer. When a voltage is applied to the optical modulator 102, the direction of the liquid crystal is along the direction of the electric field, and the liquid crystal layer is in a transparent state, as shown in fig. 15, which is equivalent to a layer of transparent material, so that the structured light passes through the liquid crystal layer smoothly without scattering, and the structured light is not changed at all. When no voltage is applied to the optical path modulator 102, the directions of the liquid crystals are randomly distributed, the liquid crystal layer is in a diffusion state, and as shown in fig. 16, the structured light is scattered while passing through the liquid crystal layer, so that the structured light is output equivalent to the illumination (i.e., the uniform light) for diffusing the incident light into a uniform distribution.

The embodiment of the utility model also provides electronic equipment, which comprises the display device provided by any one of the embodiments, and the electronic equipment can be a mobile phone, a tablet computer, a digital camera and the like. According to the electronic equipment with the 3D camera module, the depth camera module is installed without arranging a non-display area on the top of the display device, so that the appearance is more attractive, and the full-screen experience is more favorably realized.

In the embodiment of the utility model, light rays are converged on the lamp lens through the first lens and the second lens of the lens component, and the diaphragm is positioned on the light incident surface of the lamp lens, so that the depth camera module with the projection lens is suitable for being installed in a narrow gap without being shielded by an FOV (field of view), thus the application of the utility model on a narrow-frame screen (a narrow screen with a black matrix area) is realized, and the lamp lens can be attached to a mobile phone glass cover plate to play a role in dust prevention; according to the display device and the electronic equipment with the 3D camera module, the depth camera module is arranged on the backlight side of the black matrix area of the display substrate, so that a non-display area, namely a sea area, does not need to be arranged at the top of the display device, the depth camera module is installed, and the attractiveness and the comprehensive screen experience of the display device cannot be influenced; according to the embodiment of the utility model, the infrared film layer is arranged in the light-transmitting area of the black matrix area, the infrared film layer can transmit infrared light so as not to influence the work of the depth camera module, but visible light cannot pass through the infrared film layer, so that the integrity of the black matrix area is ensured, and the attractiveness of a display screen is not influenced.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended 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.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended 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.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model.

Claims (10)

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

the display substrate comprises a display area and a black matrix area surrounding the display area; the black matrix region includes at least two light transmissive regions;

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

the laser module comprises a structured light projector, a light path modulator and a projection lens; the projection lens comprises a lens component and a lamp mirror; the structured light projector is used for projecting structured light to the lens component, and the structured light comprises a plurality of laser beams which are distributed randomly; the light path modulator is used for modulating the structured light of the structured light projector to output structured light or floodlight; the lens assembly is used for converging the structured light or the floodlight and then enabling the structured light or the floodlight to be incident to the light incident surface of the lamp mirror; the lamp mirror is used for enabling the incident structured light or floodlight to irradiate on an object to be shot through a light transmission area;

the imaging module is used for receiving the structural light or floodlight reflected by the object to be shot through another light transmission area, and obtaining a depth image of the surface of the object to be shot according to the received structural light reflected by the object to be shot, or obtaining a two-dimensional image of the surface of the object to be shot according to the received floodlight reflected by the object to be shot.

2. The display device according to claim 1, wherein the light-transmitting region is provided with an infrared film layer;

the lamp mirror is used for enabling the diffused and incident infrared structural light or infrared floodlight to penetrate through an infrared film layer and a light transmission area to irradiate on an object to be shot;

the imaging module is used for receiving the infrared structural light or the infrared floodlight reflected by the object to be shot through another infrared film layer and another light transmission area, and obtaining the depth image of the surface of the object to be shot according to the infrared structural light or obtaining the infrared image of the surface of the object to be shot according to the received infrared floodlight reflected by the object to be shot.

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 projecting the structured light or the floodlight after being converged to the second lens;

and the second lens is used for converging the structured light or floodlight projected by the first lens again and projecting the converged structured light or floodlight to the light incident surface of the lamp mirror.

4. The display device according to claim 1, wherein 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 structured light or floodlight to be emitted in parallel or to be emitted nearly in parallel.

5. The display device of claim 1 wherein the laser module comprises a beam splitting device between the structured light projector and the optical path modulator;

the structured light projector adopts a laser array and is used for projecting dot matrix laser;

the light splitting device is positioned on the light emitting side of the laser array and used for splitting the lattice laser into a plurality of randomly distributed laser beams.

6. The display device of claim 1 wherein the structured light projector comprises an edge-emitting laser, a collimating lens, a reflecting device, and a beam splitting device between the laser module and the optical path modulator;

the edge-emitting laser is used for projecting laser to the collimating lens;

the collimating lens is positioned on the light-emitting side of the edge-emitting laser and is used for collimating the incident laser and emitting a collimated light beam;

the reflecting device is positioned on the light-emitting side of the collimating lens and used for reflecting the collimated light beam and projecting the collimated light beam to the light splitting device;

the light splitting device is positioned on the light emitting side of the reflecting device and used for splitting the collimated light beams projected by the reflecting device into a plurality of laser beams which are distributed randomly.

7. The display device according to claim 3, wherein the depth camera module comprises a driving circuit connected to the laser module and the imaging module;

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

8. The display device according to claim 5, wherein the optical path modulator is a liquid crystal modulator;

the liquid crystal modulator includes: the first substrate and the second substrate are oppositely arranged;

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

wherein the liquid crystal layer is in a transparent state or a diffused state by controlling the deflection of liquid crystals in the liquid crystal layer;

when the liquid crystal layer is in a transparent state, the structured light projector projects structured light through the light path modulator; and when the liquid crystal layer is in a diffusion state, the structured light projector projects floodlight through the light path modulator.

9. The display device of claim 3, wherein the imaging module comprises a second light mirror, a receiving lens, and a photodetector array; the light detector array comprises a plurality of light detectors distributed in an array;

the second light mirror is used for receiving the structured light or floodlight reflected by the object to be shot through another light-transmitting area, and divergently projecting the structured light or floodlight to the receiving lens after the structured light or floodlight is contracted to the narrowest position at the diaphragm;

the receiving lens is used for converging parallel structure light or floodlight incident at the same angle on a light detector positioned on a focal plane of the receiving lens;

the light detector array is used for receiving the structured light 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, or obtaining a two-dimensional image of the surface of the object to be shot according to received floodlight reflected by the object to be shot.

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

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