CN210155456U - Detection module, backlight module, display device and electronic equipment - Google Patents
Detection module, backlight module, display device and electronic equipment Download PDFInfo
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- CN210155456U CN210155456U CN201920374821.XU CN201920374821U CN210155456U CN 210155456 U CN210155456 U CN 210155456U CN 201920374821 U CN201920374821 U CN 201920374821U CN 210155456 U CN210155456 U CN 210155456U
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Abstract
The utility model discloses a display device, including the display module assembly that can provide backlight beam and display image and the detection module assembly of setting in the display module assembly below, the detection module assembly can see through the display module assembly transmission and receive the detection light beam. The detection module comprises an emission unit, a light transmission display module and a detection module, wherein the emission unit is used for emitting a detection light beam by the light transmission display module, and the detection light beam can be used for detecting biological characteristic information of an external object, or drawing an image of the external object, or detecting the space coordinate change of the external object; the light guide unit comprises a side surface and an upper surface which are connected, and is used for detecting that light beams enter the light guide unit from the side surface and are emitted to the display module in a divergent mode from the upper surface; and the receiving unit is arranged below the light guide unit and used for receiving the detection light beam reflected by the external object through the display module and the light guide unit. The utility model also discloses a collocation detection module assembly uses backlight unit to and including above-mentioned display device and the electronic equipment who detects module assembly and backlight unit. The utility model discloses better visual effect has.
Description
Technical Field
The utility model relates to the field of photoelectric technology, especially, relate to a detect module assembly, backlight unit, display device and electronic equipment.
Background
With the technical progress and the improvement of living standard of people, users demand more functions and fashionable appearance for electronic products such as mobile phones, tablet computers, cameras and the like. At present, the development trend of mobile phones is that the mobile phones are light and thin, are close to a full screen, and have functions of self-shooting by a front camera, face recognition and the like. As the functions supported by the electronic device become more and more abundant, the number of elements to be set becomes more and more, and a part of the display area on the front side of the electronic device needs to be occupied, which affects the appearance and user experience.
Recently, in order to achieve a full screen or nearly full screen effect, a technology of detecting biological features under a screen has come into use, that is, a biological feature detection module is placed below a display screen, and biological feature detection is achieved by sending or receiving detection light beams through the display screen. However, for non-self-emissive types of display screens, such as liquid crystal display screens, the under-screen biometric detection needs to address the screen's problem with respect to the detection beam transmittance. Some manufacturers have proposed placing the biometric detection module under the backlight module and tapping the entire display screen and backlight module. Although the scheme can realize the detection of the biological characteristics under the screen, the relatively complex process is needed, the product cost is higher, and the holes are needed on the screen and the backlight module, so that the visual effect of the whole display of the screen is poorer.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a be used for detection module assembly, backlight unit, display device and electronic equipment under screen for solving prior art problem.
An aspect of the utility model discloses a display device, be in including display module assembly and the setting that can provide the light beam in a poor light and show the image the detection module assembly of display module assembly below, it can see through to detect the module assembly the display module assembly transmission with receive the measuring beam. The detection module comprises an emission unit and a light transmission unit, wherein the emission unit is used for transmitting a detection light beam through the display module, and the detection light beam can be used for detecting biological characteristic information of an external object, or drawing an image of the external object, or detecting the space coordinate change of the external object; the light guide unit comprises a side surface and an upper surface which are connected, and is used for the detection light beam to enter the light guide unit from the side surface and to be emitted to the display module from the upper surface in a divergent mode; and the receiving unit is arranged below the light guide unit and used for receiving the detection light beams reflected by the external object through the display module and the light guide unit.
Optionally, the light guide unit has a flat structure, the light guide unit has an opening corresponding to the receiving unit, and the receiving unit receives the detection light beam reflected by the external object through the opening.
Optionally, the light guide unit has a flat structure, the light guide unit includes a light guide layer, the emitting unit is disposed adjacent to one side of the light guide layer, the light guide layer has a first opening corresponding to the receiving unit, and a light shielding layer is disposed inside the first opening and can prevent the detection light from passing through.
Optionally, the light guide unit has a flat structure, the light guide unit includes a light guide layer, the emitting unit is disposed adjacent to one side of the light guide layer, the light guide layer has a first opening corresponding to the receiving unit, and a light shielding layer is disposed inside the first opening and can prevent the detection light from passing through.
Optionally, the light guide unit further includes a reflective layer disposed below the light guide layer, the reflective layer has a second opening corresponding to the receiving unit, the second opening is disposed inside the light shielding layer, the light shielding layer is made of opaque material, and the light shielding layer is disposed close to a backlight module disposed above the light guide unit and can be used for blocking the detection beam from directly entering the receiving unit without being reflected by an external object and reducing external stray light from entering the receiving unit.
Optionally, the reflective layer is configured to reflect a portion of the detection beam entering the light guide layer from the side of the light guide layer and exiting from the lower side of the light guide layer, and then enter the light guide layer.
Optionally, the display module includes that display panel and setting are in the backlight unit of display panel below, it sets up to detect the module assembly backlight unit below, the detection light beam that detects the module assembly transmission sees through in proper order backlight unit, display panel exit to the outside to see through in proper order after being reflected by the external object display panel backlight unit reachs detect the module assembly.
Optionally, the backlight module includes a light guide plate, a reflector disposed below the light guide plate, a diffuser disposed above the light guide plate, and a backlight source disposed on a side of the light guide plate, where the backlight source is configured to provide a backlight beam for image display, the light guide plate includes a light exit surface opposite to the diffuser and a light entrance surface connected to the light exit surface, the light guide plate is configured to receive the backlight beam from the backlight source from the light entrance surface and emit the backlight beam from the light exit surface, and the reflector is configured to reflect a part of the backlight beam emitted from the bottom of the light guide plate into the light guide plate and transmit the detection beam.
One aspect of the utility model discloses a detection module, it can be used to the biological feature under the screen to detect, it includes leaded light unit, transmitting element and receiving element to detect the module, the receiving element sets up leaded light unit below, the transmitting element is close to a side of leaded light unit sets up, leaded light unit includes leaded light layer and sets up the reflection stratum in leaded light layer below, the transmitting element is close to the side setting on leaded light layer, the receiving element sets up the reflection stratum below, leaded light layer with the reflection stratum has the correspondence the trompil of receiving element, the trompil inboard sets up the light shield layer, the setting is hugged closely with a backlight unit's reflector plate to the light shield layer, the receiving element part sets up in the trompil.
One aspect of the present invention discloses a backlight module, a detection module disposed below the backlight module can transmit and receive detection light beams through the backlight module, the backlight module comprises a light guide plate, a reflector plate disposed below the light guide plate, a diffusion sheet disposed above the light guide plate, and a backlight source disposed at one side of the light guide plate, the backlight source is used for providing backlight beams for image display, the light guide plate comprises a light emitting surface opposite to the diffusion sheet and a light incident surface connected to the light emitting surface, the light guide plate is used for receiving the backlight beams from the backlight source from the light incident surface and emitting the backlight beams from the light emitting surface, the reflector plate is used for reflecting part of the backlight beams emitted from the bottom of the light guide plate into the light guide plate and transmitting the detection light beams, the diffusion sheet comprises a quantum dot film, and the backlight module is used in the display device.
An aspect of the present invention discloses an electronic device, which includes the above-mentioned display device, or the above-mentioned detection module, or the above-mentioned backlight module.
Compared with the prior art, the utility model discloses detect module, backlight unit, display device and electronic equipment utilizes and detects the module transmission and receive the measuring beam, and the measuring beam that the even face of detection module can transmission, and backlight unit and display panel have good transmissivity to the measuring beam to need punch on the display module assembly just can realize the detection and the discernment to outside object under the screen, have better whole visual effect and user experience simultaneously.
Drawings
Fig. 1 is a schematic view of an embodiment of the present invention;
fig. 2 is a schematic view of a diffusion sheet according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a transmittance curve of a reflective sheet according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an embodiment of the present invention;
fig. 5 is a schematic diagram of an embodiment of the present invention.
Detailed Description
In the detailed description of the embodiments of the present invention, it is to be understood that when a substrate, a frame, a sheet, a layer, or a pattern is referred to as being "on" or "under" another substrate, another sheet, another layer, or another pattern, it can be "directly" or "indirectly" on the other substrate, the other sheet, the other layer, or the other pattern, or one or more intervening layers may also be present. The thickness and size of each layer in the drawings of the specification may be exaggerated, omitted, or schematically represented for clarity. Further, the sizes of the elements in the drawings do not completely reflect actual sizes.
An embodiment of the utility model provides a display device, be in including the display module assembly and the setting that can provide backlight beam and display image the detection module assembly of display module assembly below, it can see through to detect the module assembly the display module assembly transmission with receive the measuring beam. The detection module comprises an emission unit and a light transmission unit, wherein the emission unit is used for transmitting a detection light beam through the display module, and the detection light beam can be used for detecting biological characteristic information of an external object, or drawing an image of the external object, or detecting the space coordinate change of the external object; the light guide unit comprises a side surface and an upper surface which are connected, and is used for the detection light beam to enter the light guide unit from the side surface and to be emitted to the display module from the upper surface in a divergent mode; and the receiving unit is arranged below the light guide unit and used for receiving the detection light beams reflected by the external object through the display module and the light guide unit. The light guide unit is provided with an opening corresponding to the receiving unit, and the receiving unit receives the detection light beam reflected by the external object through the opening. The light guide unit comprises a light guide layer, the emitting unit is arranged close to one side face of the light guide layer, the light guide layer is provided with a first opening corresponding to the receiving unit, and a light shielding layer is arranged on the inner side of the first opening and can prevent the detection light from penetrating through the light shielding layer.
In this embodiment, the light guide unit includes a light guide layer, the emitting unit is disposed adjacent to one side of the light guide layer, the light guide layer has a first opening corresponding to the receiving unit, and a light shielding layer is disposed inside the first opening and can prevent the detection light from passing through the light shielding layer.
In this embodiment, the light guide unit further includes a reflective layer disposed below the light guide layer, the reflective layer has a second opening corresponding to the receiving unit, the inner side of the second opening is disposed with the light shielding layer, the light shielding layer is made of opaque material, the light shielding layer is disposed close to a backlight module disposed above the light guide unit, and is capable of blocking the detection beam from directly entering the receiving unit without being reflected by an external object and reducing external stray light from entering the receiving unit. The reflecting layer is used for reflecting part of detection beams which enter the light guide layer from the side face of the light guide layer and are emitted from the lower portion of the light guide layer, and then the detection beams enter the light guide layer.
The display module comprises a display panel and a backlight module arranged below the display panel, the detection module is arranged below the backlight module, detection light beams emitted by the detection module sequentially penetrate through the backlight module and the display panel to be emitted to the outside, and are reflected by an external object and then sequentially penetrate through the display panel and the backlight module to reach the detection module. The backlight module comprises a light guide plate, a reflector plate, a diffusion sheet and a backlight source, wherein the reflector plate is arranged below the light guide plate, the diffusion sheet is arranged above the light guide plate, the backlight source is arranged on one side face of the light guide plate, the backlight source is used for providing backlight beams for image display, the light guide plate comprises a light emergent face opposite to the diffusion sheet and a light incident face connected with the light emergent face, the light guide plate is used for receiving the backlight beams from the backlight source from the light incident face and emitting the backlight beams from the light emergent face, and the reflector plate is used for reflecting part of the backlight beams emitted from the bottom of the light guide plate into the light guide plate and transmitting.
An embodiment of the utility model provides a detection module, it can be used to the biological feature under the screen to detect, it includes leaded light unit, transmitting element and receiving element to detect the module, the receiving element sets up leaded light unit below, the transmitting element is close to a side of leaded light unit sets up, leaded light unit includes leaded light layer and the reflector layer of setting in leaded light layer below, the transmitting element is close to the side setting on leaded light layer, the receiving element sets up the reflector layer below, leaded light layer with the reflector layer has the correspondence the trompil of receiving element, the trompil inboard sets up the light shield layer, the setting is hugged closely with a backlight unit's reflector plate to the light shield layer, the receiving element part sets up in the trompil.
An embodiment of the present invention provides a backlight module, a detecting module disposed below the backlight module is capable of transmitting and receiving detecting light beams through the backlight module, the backlight module comprises a light guide plate, a reflector disposed below the light guide plate, a diffuser disposed above the light guide plate, and a backlight source disposed at a side of the light guide plate, the backlight source is used for providing backlight beams for image display, the light guide plate comprises a light emitting surface opposite to the diffuser and a light incident surface connected to the light emitting surface, the light guide plate is used for receiving the backlight beams from the backlight source from the light incident surface and emitting the backlight beams from the light emitting surface, the reflector is used for reflecting part of the backlight beams emitted from the bottom of the light guide plate into the light guide plate and transmitting the detecting light beams, the diffusion sheet comprises a quantum dot film, and the backlight module is used in the display device.
The embodiment of the utility model also provides an electronic equipment, it includes foretell display device, or foretell detection module assembly, or foretell backlight unit.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a display device 1 includes a display module 20 and a detection module 10 disposed below or at the back of the display module 20. The detection module 10 can transmit and receive the detection light beam 101 through the display module 20.
In this embodiment, the detection module 10 can transmit a detection beam to the surface or outside of the display module 20 through the display module 20, and receive the detection beam reflected by the external object 1000 through the display module 20. The display module 20 can be used for displaying images and can provide a contact or non-contact human-computer interaction interface for a user.
The detection module 10 includes a light guide unit 11, a transmitting unit 12, and a receiving unit 13. The emitting unit 12 is disposed adjacent to the light guiding unit 11, and is configured to emit a detection light beam 101. The light guiding unit 11 comprises a side surface (not numbered) and an upper surface (not numbered) which are connected, and is used for enabling the detection light beam 101 to enter the light guiding unit 11 from the side surface of the light guiding unit 11 and to be emitted divergently from the upper surface of the light guiding unit 11. The emission unit 12 is disposed adjacent to a side surface of the light guide unit 11. The receiving unit 13 is disposed below the light guiding unit 11, and is configured to receive the detection light beam 101 reflected by the external object 1000 through the light guiding unit 11. The light guide unit 11 can change the radial detection light beam 101 emitted from the emission unit 12 into a uniform surface-emitting detection light beam 101.
After the detection light beam 101 emitted by the emitting unit 12 enters the light guide unit 11, part of the detection light beam 101 is reflected and/or refracted and then exits from the upper surface of the light guide unit 11 to the lower side of the display module 20, and can reach the outer surface of the display module 20 or the outer part of the display module 20 through the display module 20. The detection light beam 101 is reflected by the external object 1000 and then can be received by the receiving unit 13 through the display module 20 and the light guide unit 11.
In this embodiment, the detection light beam 101 can be used for two-dimensional and/or three-dimensional image rendering of an external object, or for two-dimensional and/or three-dimensional biometric recognition of an external object.
In this embodiment, the detection beam 101 is infrared light. In other modified embodiments, the detection beam 101 may also be visible light, invisible light, electromagnetic wave, ultrasonic wave, or ultraviolet lamp.
The light guide unit 11 has a substantially flat plate-shaped structure, and has an opening corresponding to the receiving unit 13, and the receiving unit 13 receives the detection light beam 101 reflected by the external object 1000 through the opening 114. Specifically, the light guide unit 11 includes a light guide layer 111 and a reflective layer 112 disposed below the light guide layer 111, the emitting unit 12 is disposed adjacent to one side surface (not numbered) of the light guide layer 111, the light guide layer 111 has a first opening (not numbered) corresponding to the receiving unit 13, the reflective layer 112 has a second opening (not numbered) corresponding to the receiving unit 13, the first opening and the second opening together form the opening 114, a light shielding layer 113 is disposed inside the opening 114, and the light shielding layer 113 can prevent the detection light 101 from passing through.
In a modified embodiment of the above embodiment, the light guide unit 11 further includes a Diffusion Sheet (Diffusion Sheet) disposed on the light guide layer 111 for diffusing the detection light beam 101 and/or a Prism Sheet (Prism Sheet) for increasing the brightness of the detection light beam 101 within a detection range corresponding angle. The detection range corresponds to an angle such as, but not limited to, 60 degrees from the normal of the prism sheet.
In this embodiment, the apertures of the first opening and the second opening are different in size, the aperture of the first opening is smaller than the aperture of the second opening, and the light shielding layer 113 covers a step surface formed at a joint of the first opening and the second opening due to the aperture difference.
In this embodiment, the emitting unit 112 may include one or more light emitting elements, such as but not limited to a Light Emitting Diode (LED), a Vertical Cavity Surface emitting laser (Vertical Cavity Surface emitting laser), or other light emitting devices. The receiving unit 13 may comprise an infrared image sensor capable of receiving infrared light beams and converting them into corresponding electrical signals. In other or modified embodiments, the receiving unit 13 may include a visible light image sensor, or other types of photoelectric conversion chips.
The transmitting unit 12 and the receiving unit 13 shown in fig. 1 are schematic representations only, and do not represent any limitation of the transmitting unit 12, the receiving unit 13, and the shape, structure, and positional relationship therebetween.
In other or modified embodiments of the present invention, the aperture of the first opening and the second opening may be the same, or the aperture of the first opening is larger than the aperture of the second opening.
The display module 20 includes a display panel 21 and a backlight module 22 disposed below the display panel 21. The display panel 21 can be used for image display, and the backlight module 22 can provide the display panel 21 with a backlight beam for image display. In this embodiment, the backlight beam is, for example, but not limited to, visible light.
The display panel 21 includes a panel layer 211 and a protective layer 212 disposed on the panel layer. The backlight module 22 includes a light guide plate 222, a reflective sheet 221 disposed below the light guide plate 222, a diffusion sheet 223 disposed above the light guide plate 222, and a backlight source 224 disposed adjacent to a side surface of the light guide plate 222. The detection module 10 is disposed below the reflective sheet 221. The display panel 21 is disposed above the diffusion sheet 223. The backlight light source 224 is used for providing a backlight beam required for image display to the display panel 21. The light guide plate 222 includes a light exit surface (not numbered) opposite to the diffusion sheet 223 and a light entrance surface (not numbered) connected to the light exit surface, and the light guide plate 222 is configured to receive the backlight beam from the backlight source 224 from the light entrance surface and emit the backlight beam from the light exit surface. The reflective sheet 221 is used for reflecting a part of the backlight beam emitted from the bottom of the light guide plate 222 into the light guide plate 222 and transmitting the detection beam 101. The diffusion sheet 223 is used for diffusing the backlight beam emitted from the light-emitting surface of the light guide plate 222, so that the backlight beam enters the display panel 21 more uniformly and divergently.
In this embodiment, the light shielding layer 113 is disposed close to the reflective sheet 221, so that the detection beam 101 can be effectively prevented from directly entering the receiving unit 13 from the emitting unit 12, and external stray light and interference of reflected light from the display panel 21 and the reflective sheet 221 can be reduced.
In this embodiment, the diffusion sheet 223 includes one of a quantum dot film, a nano porous film, polyethylene terephthalate, or other polyester compounds.
Referring to fig. 2, when the diffusion sheet 223 includes a quantum dot film, the diffusion sheet 223 includes a base 2231 and a plurality of quantum dots 2232 disposed in the base 2231. The backlight light beam provided by the backlight light source 224 may be blue light, a portion of which can be converted by the quantum dots 2232 in the quantum dot film into red light and green light, which can be mixed to form white light, which can be used for image display of the display panel 21. In a modified embodiment of this embodiment, the backlight light sources 224 can emit ultraviolet light, the diffusion sheet 223 can convert the ultraviolet light from the backlight light sources 224 into red light, green light, and blue light, and the converted red light, green light, and blue light can be mixed into white light and supplied to the display panel 21 for image display.
As shown in fig. 2, in the present embodiment and the modified embodiments, the diffusion sheet 223 has a better transmittance for the detection light beam 101, for example, but not limited to, when the detection light beam 101 is infrared light, the transmittance of the diffusion sheet 223 for the detection light beam 101 is greater than 50%.
In this embodiment, the panel layer 211 includes two substrates disposed opposite to each other and a liquid crystal layer disposed between the two substrates. The display panel 21 is a liquid crystal display panel. The protective layer 212 is a cover glass. The display panel 21 can transmit the detection light beam 101, and the substrate, the liquid crystal layer and the cover glass of the display panel 21 have better transmittance for the detection light beam 101.
In this embodiment, the reflective sheet 221 can reflect visible light and transmit the detection beam 101. For example, but not limiting of, the reflective sheet 221 is formed by a stack of multilayer optical films having different refractive indices for the detection beam 101 and visible light, the reflective sheet having a reflectance of greater than 90% for visible light, a transmittance of less than 0.1% for visible light, and a transmittance of greater than 90% for the detection beam 101 by optical modulation. Preferably, the detection light beam is infrared light, and the reflectivity of the reflection sheet 221 to visible light is greater than 90%, and the transmissivity to infrared light is greater than 90%.
Referring to fig. 3, in an embodiment of the present invention, the transmittance of the reflective sheet 221 to infrared light with a wavelength of 900nm to 1000nm is greater than 90%, and the transmittance to visible light is less than 0.1%.
In the embodiment or the modified embodiment, the detection light beam 101 may include one or more of flood light (flood light, light beam that the illumination area of flood light finger is wider and the illumination angle is divergent), speckle structured light, coded structured light, and modulation pulse signal.
Please refer to fig. 4, which is a schematic diagram of an embodiment of the display device 1 shown in fig. 1. In this embodiment, the receiving unit 13 and the transmitting unit 12 are disposed below the display module 20 adjacent to the bottom of the display module 20. The emitting unit 12 emits the detection light beam 101, which is reflected by the external object after passing through the display module 20, and passes through the display module 20 again to be received by the receiving unit 13, and can be used for detecting the biological characteristics of the external object, or drawing the image of the external object, or detecting the spatial coordinate changes such as the motion or distance of the external object.
Please refer to fig. 5, which is a schematic diagram of an embodiment of the display device 1 shown in fig. 1. In this embodiment, the transmitting unit 12 is disposed below the display module 20 adjacent to the bottom of the display module 20. The number of the receiving units 13 is two, and the receiving units 13 are arranged below the display module 20 adjacent to the top of the display module 20. In the present embodiment, the two receiving units 13 are capable of receiving the detection light beams 101 reflected by the external object 1000, respectively, and obtaining three-dimensional biometric information of the external object 1000 through Binocular Stereo Vision (Binocular Stereo Vision), or drawing a three-dimensional image of the external object, or detecting a change in coordinates such as a direction and a distance of the external object in a three-dimensional space.
In the above embodiment or the modified embodiment, the detection module 20 may further include a processor (not shown), and the processor may obtain the two-dimensional information and/or the depth information of the external object 1000 according to the detection beam 101 received by the receiving unit 13. Further, the processor also stores the biometric information data in advance, and the processor can detect and identify the biometric information of the external object by comparing the obtained two-dimensional information and/or depth information of the external object 1000 with the biometric information data stored in advance, such as but not limited to: fingerprint recognition, face recognition, iris recognition, and the like.
By detecting and identifying the biological characteristics of the external object 1000, the detection module 10 can be applied to various products and application scenarios such as locking or unlocking of the display device 1, online payment service verification, authentication of a financial system or a public security system, passage verification of an access control system, and the like.
Therefore, the display device 1 can be used for two-dimensional and/or three-dimensional biometric detection and recognition of an external object, or for two-dimensional and/or three-dimensional image rendering of an external object, or for two-dimensional and/or three-dimensional spatial coordinate detection of an external object.
In the embodiments and variations of the present invention, the external object 1000 includes, but is not limited to, a finger (fingerprint), an iris, a face, and the like.
In the above or modified embodiments of the present invention, the positions and the numbers of the transmitting unit 12 and the receiving unit 13 may have different settings, which is not limited by the present invention.
The utility model also provides a detection module, detection module includes above-mentioned detection module 10 or its change embodiment, and it can be used to display device 1 or its change embodiment.
The utility model also provides a backlight module, backlight module can arrange above-mentioned detection module group and use. The backlight module includes the backlight module 22 or its modified embodiment, which can be used in the display device 1 or its modified embodiment.
The utility model also provides an electronic equipment, electronic equipment includes above-mentioned display device 1 or its modified embodiment. The electronic device may be a mobile phone, a tablet computer, a smart watch, an augmented reality/virtual reality device, a human action detection device, an autonomous vehicle, a smart home device, a security device, an intelligent robot or other electronic devices having a biometric identification capability for objects.
Compared with the prior art, the utility model discloses detection module 10, backlight unit 22, display device 11 and electronic equipment utilize detection module 10 transmission and receive detection light beam 101, and detection module 10 has the structure that can provide the luminous detection light beam 101 of even face. The backlight module 22 and the display panel 21 have good transmittance for the detection beam 101. Thereby need not punch on display module assembly 20 just can realize detection and discernment to outside object 1000 under the screen, have better whole visual effect and user experience simultaneously.
It should be noted that, those skilled in the art can understand that, without creative efforts, some or all of the embodiments of the present invention, and some or all of the deformation, replacement, alteration, split, combination, extension, etc. of the embodiments should be considered as covered by the inventive idea of the present invention, and belong to the protection scope of the present invention.
Any reference in this specification to "one embodiment," "an embodiment," "example embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature or structure is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature or structure in connection with other ones of the embodiments.
The references to "length", "width", "upper", "lower", "front", "rear", "back", "front", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. as used herein are intended to refer to the orientation or positional relationship shown in the drawings, and are intended to facilitate the description of the embodiments and to simplify the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Like reference numbers and letters refer to like items in the figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance. In the description of the present invention, "plurality" or "a plurality" means at least two or two unless specifically defined otherwise. In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, "disposed," "mounted" or "connected" is to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. The terms used in the following claims should not be construed to limit the invention to the specific embodiments disclosed in the specification. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A display device, comprising:
the display module can provide backlight beams and display images; and
the detection module is arranged below the display module and can transmit and receive detection light beams through the display module;
wherein, the detection module includes:
the transmitting unit is used for transmitting a detection light beam through the display module, and the detection light beam can be used for detecting biological characteristic information of an external object, or drawing an image of the external object, or detecting the space coordinate change of the external object;
the light guide unit comprises a side surface and an upper surface which are connected, and is used for the detection light beam to enter the light guide unit from the side surface and to be emitted to the display module from the upper surface in a divergent mode; and
and the receiving unit is arranged below the light guide unit and used for receiving the detection light beams reflected by the external object through the display module and the light guide unit.
2. The display device according to claim 1, wherein the light guide unit has an opening corresponding to the receiving unit, and the receiving unit receives the detection beam reflected by the external object through the opening.
3. The display device according to claim 1, wherein the light guide unit includes a light guide layer, the emitting unit is disposed adjacent to one side surface of the light guide layer, the light guide layer has a first opening corresponding to the receiving unit, and a light shielding layer is disposed inside the first opening and can prevent the detection beam from passing through.
4. The display device as claimed in claim 3, wherein the light guide unit further includes a reflective layer disposed below the light guide layer, the reflective layer has a second opening corresponding to the receiving unit, the light shielding layer is disposed inside the second opening and is made of opaque material, and the light shielding layer is disposed adjacent to a backlight module above the light guide unit and is capable of blocking the detection beam from directly entering the receiving unit without being reflected by an external object and reducing external stray light from entering the receiving unit.
5. The display device according to claim 4, wherein the reflective layer is configured to reflect a portion of the detection beam entering the light guide layer from a side of the light guide layer and exiting from below the light guide layer, and then entering the light guide layer.
6. The display device according to claim 1, wherein the display module comprises a display panel and a backlight module disposed below the display panel, the detection module is disposed below the backlight module, and the detection light beam emitted by the detection module sequentially exits to the outside through the backlight module and the display panel, and is reflected by an external object and then sequentially reaches the detection module through the display panel and the backlight module.
7. The display device according to claim 6, wherein the backlight module comprises a light guide plate, a reflector disposed below the light guide plate, a diffuser disposed above the light guide plate, and a backlight source disposed at a side of the light guide plate, the backlight source being configured to provide a backlight beam for image display, the light guide plate comprising an exit surface opposite to the diffuser and an entrance surface connected to the exit surface, the light guide plate being configured to receive the backlight beam from the backlight source from the entrance surface and to emit the backlight beam from the exit surface, and the reflector being configured to reflect a portion of the backlight beam emitted from the bottom of the light guide plate into the light guide plate and to transmit the detection beam.
8. The utility model provides a detection module, its biological feature that can be used to under the screen detects, its characterized in that, detection module includes leaded light unit, emission unit and receiving element, the receiving element sets up leaded light unit below, the emission unit is close to a side setting of leaded light unit, leaded light unit includes leaded light layer and the reflection stratum of setting in leaded light layer below, the emission unit is close to the side setting on leaded light layer, the receiving element sets up the reflection stratum below, leaded light layer with the reflection stratum has the correspondence the trompil of receiving element, the trompil inboard sets up the light shield layer, the light shield layer is hugged closely with a backlight unit's reflector plate and is set up, the receiving element part sets up in the trompil.
9. A backlight module characterized in that a detection module disposed below the backlight module is capable of emitting and receiving a detection light beam through the backlight module, the backlight module comprises a light guide plate, a reflector plate disposed below the light guide plate, a diffuser plate disposed above the light guide plate, and a backlight source disposed at one side of the light guide plate, the backlight source is used for providing a backlight light beam for image display, the light guide plate comprises a light exit surface opposite to the diffuser plate and a light entrance surface connected to the light exit surface, the light guide plate is used for receiving the backlight light beam from the backlight source from the light entrance surface and emitting the backlight light beam from the light exit surface, the reflector plate is used for reflecting part of the backlight light beam emitted from the bottom of the light guide plate into the light guide plate and transmitting the detection light beam, the diffuser plate comprises a quantum dot film, the backlight module is used in the display device of any one of claims 1 to 7.
10. An electronic device, comprising the display device according to any one of claims 1 to 7, or the detection module according to claim 8, or the backlight module according to claim 9.
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| CN201920374821.XU CN210155456U (en) | 2019-03-23 | 2019-03-23 | Detection module, backlight module, display device and electronic equipment |
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| CN201920374821.XU CN210155456U (en) | 2019-03-23 | 2019-03-23 | Detection module, backlight module, display device and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901313A (en) * | 2019-03-23 | 2019-06-18 | 深圳阜时科技有限公司 | Detect mould group, backlight module, display device and electronic equipment |
| CN111405090A (en) * | 2020-03-18 | 2020-07-10 | Oppo广东移动通信有限公司 | Camera calling method of mobile equipment and mobile equipment |
-
2019
- 2019-03-23 CN CN201920374821.XU patent/CN210155456U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901313A (en) * | 2019-03-23 | 2019-06-18 | 深圳阜时科技有限公司 | Detect mould group, backlight module, display device and electronic equipment |
| CN111405090A (en) * | 2020-03-18 | 2020-07-10 | Oppo广东移动通信有限公司 | Camera calling method of mobile equipment and mobile equipment |
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