CN111381398B - Display module and electronic equipment - Google Patents
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- CN111381398B CN111381398B CN201811639243.4A CN201811639243A CN111381398B CN 111381398 B CN111381398 B CN 111381398B CN 201811639243 A CN201811639243 A CN 201811639243A CN 111381398 B CN111381398 B CN 111381398B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The disclosure relates to a display module and an electronic device. The method comprises the following steps: the liquid crystal display device comprises a liquid crystal layer, a first prism module, a light guide plate and a second prism module which are sequentially arranged from top to bottom, wherein the first prism module and the second prism module respectively comprise N prism films, and N is more than or equal to 1; the light incident surface of the prism film in the first prism module faces the light guide plate, the light emergent surface of the prism film in the first prism module faces the liquid crystal layer, the light incident surface of the prism film in the second prism module faces the light guide plate, and the light emergent surface of the prism film in the second prism module faces the bottom surface of the display module, wherein the incidence angle of light on the light incident surface is larger than the emergence angle of light on the light emergent surface. According to the technical scheme, the included angle between the infrared light and the normal line of the display module is not changed after the infrared light passes through the display module, so that the fingerprint identification module can identify the infrared light reflected by the finger, and the user experience is improved.
Description
Technical Field
The disclosure relates to the technical field of display screens, in particular to a display module and electronic equipment.
Background
With the rapid development of science and technology, the comprehensive screen gradually becomes a trend of mobile terminal design, wherein the problem of how to set up a fingerprint identification module when designing a mobile terminal has been plagued by various manufacturers. In general, the fingerprint recognition module may be disposed on the front, the back or the side of the mobile terminal, where the fingerprint recognition module is required to be disposed on the surface of the mobile terminal housing in the three manners, and the fingerprint collection window is disposed on the front of the mobile terminal housing, which may result in a decrease in the screen duty ratio of the mobile terminal; the fingerprint acquisition window is arranged on the side surface of the shell of the mobile terminal, so that the thickness of the mobile terminal is increased; the fingerprint collection window is arranged on the back of the shell of the mobile terminal, so that a user cannot directly determine the position of the fingerprint collection window through naked eyes when using the mobile phone, and the user experience can be damaged by the three schemes.
In the related art, an under-screen fingerprint identification module can be arranged in the mobile terminal so as to avoid arranging a fingerprint acquisition window on the surface of the shell of the mobile terminal. The under-screen fingerprint identification module can be arranged below the screen, and can identify fingerprint lines of fingers above the screen by sending out near infrared light without touching the fingers with the fingerprint module.
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a display module and an electronic device. The technical proposal is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided a display module, including: the liquid crystal display device comprises a liquid crystal layer, a first prism module, a light guide plate and a second prism module which are sequentially arranged from top to bottom, wherein the first prism module and the second prism module respectively comprise N prism films, and N is more than or equal to 1;
the light incident surface of the prism film in the first prism module faces the light guide plate, the light emergent surface of the prism film in the first prism module faces the liquid crystal layer, the light incident surface of the prism film in the second prism module faces the light guide plate, and the light emergent surface of the prism film in the second prism module faces the bottom surface of the display module, wherein the incidence angle of light on the light incident surface is larger than the emergence angle of light on the light emergent surface.
In the technical scheme provided by the embodiment of the disclosure, the display module comprises a liquid crystal layer, a first prism module, a light guide plate and a second prism module which are sequentially arranged from top to bottom, wherein the first prism module and the second prism module respectively comprise N prism films, N is more than or equal to 1, the light incident surface of the prism films in the first prism module faces the light guide plate, the light emergent surface of the prism films in the first prism module faces the liquid crystal layer, the light incident surface of the prism films in the second prism module faces the light guide plate, and the light emergent surface of the prism films in the second prism module faces the bottom surface of the display module, wherein the incident angle of light on the light incident surface is larger than the light emergent angle on the light emergent surface. In the display module, if the fingerprint above the display module reflects infrared light, the light path of the reflected infrared light is changed by the first prism module when passing through the first prism module, the included angle between the infrared light and the normal line of the display module is increased from a first angle value to a second angle value, the infrared light passing through the first prism module passes through the second prism module after passing through the light guide plate and is changed by the second prism module, the included angle between the infrared light passing through the second prism module and the normal line of the display module is reduced from the second angle value to the first angle value, even if the included angle between the infrared light emitted from the bottom of the display module and the normal line of the display module is still the first angle value (namely, the angle value of the included angle between the infrared light and the normal line of the display module when the infrared light is emitted into the display module), the included angle between the infrared light and the normal line of the display module is not changed after the infrared light passes through the display module, so that the fingerprint recognition module arranged below the display module can not be divided into a plurality of sub-images according to the images, and the fingerprint recognition module can recognize the infrared light reflected by the finger, thereby improving user experience.
In one embodiment, the display module further includes an infrared transmitting reflective sheet disposed between the light guide plate and the second prism module, the non-reflective surface of the infrared transmitting reflective sheet faces the second prism module, and the reflective surface of the infrared transmitting reflective sheet faces the light guide plate.
In one embodiment, the display module further includes a visible light diffusion sheet disposed between the first prism module and the light guide plate.
In one embodiment, the display module further includes a fingerprint recognition module disposed under the second prism module, the fingerprint recognition module including an infrared light emitter and an infrared light sensor.
In one embodiment, the display module further includes a frame, and the first prism module, the light guide plate and the second prism module are all fixed in the frame.
In one embodiment, the liquid crystal layer is bonded to the bezel.
In one embodiment, the display module further includes a light source module disposed at a side surface of the light guide plate and fixed on an inner wall of the frame.
According to a second aspect of embodiments of the present disclosure, there is provided an electronic device comprising the display module of any one of the first aspects of embodiments of the present disclosure.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1a1 is a schematic structural view of a display module shown according to an exemplary embodiment;
FIG. 1a2 is a schematic view of an optical path of a display module shown according to an exemplary embodiment;
fig. 1b is a schematic structural view of a display module shown according to an exemplary embodiment;
fig. 1c is a schematic diagram of a display module according to an exemplary embodiment;
FIG. 1d is a schematic diagram of a display module according to an exemplary embodiment;
fig. 1e is a schematic diagram illustrating a structure of a display module according to an exemplary embodiment;
fig. 2 is a schematic diagram of a structure of an electronic device according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
With the rapid development of science and technology, the full-screen is gradually becoming a trend of mobile terminal design, wherein how to set up fingerprint recognition modules in designing the full-screen mobile terminal has been plagued by various manufacturers.
In the related art, an under-screen fingerprint identification module can be arranged in the mobile terminal so as to avoid arranging a fingerprint acquisition window on the surface of the shell of the mobile terminal. The under-screen fingerprint identification module can be arranged below the screen, and can identify fingerprint lines of fingers above the screen by sending out near infrared light without touching the fingers with the fingerprint module.
Because an Organic Light-Emitting Diode (OLED) screen has a self-luminous characteristic, a certain interval can be reserved between pixels on the OLED screen, and infrared Light emitted by a fingerprint module arranged under the screen and infrared Light reflected by fingers can penetrate the screen, so that the fingerprint identification purpose is achieved. However, for a liquid crystal display (Liquid Crystal Display, LCD) screen, a prism film is generally disposed between a liquid crystal module and a light guide plate in the LCD screen, so that the prism film can collect light emitted by the light guide plate, i.e. scattered light emitted by the light guide plate is concentrated toward the front, thereby achieving the purpose of improving the front brightness of the LCD screen. When the under-screen fingerprint identification module is arranged under the LCD screen, when infrared light reflected by the finger passes through the prism film, the optical path of the infrared light is changed by the prism film, so that the included angle between the infrared light and the normal line of the display screen is changed after the infrared light is transmitted through the display screen, the image acquired by the under-screen fingerprint identification module according to the infrared light reflected by the finger is divided into a plurality of sub-images, and then the fingerprint identification module cannot conduct fingerprint identification through the infrared light reflected by the finger, so that the user experience is damaged.
In order to solve the problem in the above-mentioned scheme, in the technical scheme that the embodiment of the disclosure provides, the display module includes from top to bottom the liquid crystal layer that sets gradually, first prism module, light guide plate and second prism module, wherein first prism module and second prism module include N piece prism membrane respectively, N is greater than or equal to 1, the income plain noodles of prism membrane in the first prism module is towards the light guide plate, the play plain noodles of prism membrane in the first prism module is towards the liquid crystal layer, the income plain noodles of prism membrane in the second prism module is towards the light guide plate, the play plain noodles of prism membrane in the second prism module is towards the bottom surface of display module, wherein the incident angle of light on the income plain noodles is greater than the emergence angle of light on the play plain noodles. In the display module, if the fingerprint above the display module reflects infrared light, the light path of the reflected infrared light is changed by the first prism module when passing through the first prism module, the included angle between the infrared light and the normal line of the display module is increased from a first angle value to a second angle value, the infrared light passing through the first prism module passes through the second prism module after passing through the light guide plate and is changed by the second prism module, the included angle between the infrared light passing through the second prism module and the normal line of the display module is reduced from the second angle value to the first angle value, even if the error between the included angle between the infrared light emitted from the bottom of the display module and the normal line of the display module and the first angle value (namely the angle value of the included angle between the infrared light and the normal line of the display module when entering the display module) is smaller, the included angle between the infrared light and the normal line of the display module is not changed or is smaller after the infrared light passes through the display module, so that the fingerprint recognition module arranged below the display module can not divide images acquired according to the infrared light reflected by fingers into a plurality of sub images, and fingerprint recognition modules can recognize the infrared light reflected by fingers, thereby improving the user experience.
The embodiment of the disclosure provides a display module, as shown in fig. 1a1, the display module 100 includes a liquid crystal layer 101, a first prism module 102, a light guide plate 103 and a second prism module 104 sequentially disposed from top to bottom, where the first prism module 102 and the second prism module 104 respectively include N prism films, and N is greater than or equal to 1. The light incident surface of the prism film in the first prism module 102 faces the light guide plate 103, the light emergent surface of the prism film in the first prism module 102 faces the liquid crystal layer 101, the light incident surface of the prism film in the second prism module 104 faces the light guide plate 103, and the light emergent surface of the prism film in the second prism module 104 faces the bottom surface of the display module 100, wherein the incident angle of the light on the light incident surface is larger than the emergent angle of the light on the light emergent surface.
For example, taking the first prism module including 1 prism film and the second prism module including 1 prism film as shown in fig. 1a2, the reflected infrared light 1001 that passes through the liquid crystal layer after being reflected by a finger is incident on the light exit surface of the first prism module 102, the first reflected infrared light 1002 after the light path is changed is emitted from the light entrance surface of the first prism module 102, where an included angle between the reflected infrared light 1001 and the normal 1003 of the display module is a first included angle (the first included angle is illustrated as 0 degree in fig. 1a, that is, the reflected infrared light 1001 is perpendicular to the display module 100), and an included angle between the normal 1003 of the display module is perpendicular to the first reflected infrared light 1002 of the liquid crystal layer 101 and the normal 1003 of the display module is a second included angle 1012, where the second included angle 1012 is greater than the first included angle. The light path of the first refractive infrared light 1002 is not affected or less affected when the first refractive infrared light 1002 passes through the light guide plate, the first refractive infrared light 1002 is incident into the light incident surface of the second prism module 104 after passing through the light guide plate, the second refractive infrared light 1004 after the light path is changed is emitted from the light emergent surface of the second prism module 104, wherein an included angle between the second refractive infrared light 1004 and the normal 1003 of the display module is a third included angle, and an angle difference between the third included angle and the first included angle is less than or equal to a preset angle difference (it can be understood that the third included angle is about equal to 0 degree).
In the technical scheme provided by the embodiment of the disclosure, the display module comprises a liquid crystal layer, a first prism module, a light guide plate and a second prism module which are sequentially arranged from top to bottom, wherein the first prism module and the second prism module respectively comprise N prism films, N is more than or equal to 1, the light incident surface of the prism films in the first prism module faces the light guide plate, the light emergent surface of the prism films in the first prism module faces the liquid crystal layer, the light incident surface of the prism films in the second prism module faces the light guide plate, and the light emergent surface of the prism films in the second prism module faces the bottom surface of the display module, wherein the incident angle of light on the light incident surface is larger than the light emergent angle on the light emergent surface. In the display module, if the fingerprint above the display module reflects infrared light, the light path of the reflected infrared light is changed by the first prism module when passing through the first prism module, the included angle between the infrared light and the normal line of the display module is increased from a first angle value to a second angle value, the infrared light passing through the first prism module passes through the second prism module after passing through the light guide plate and is changed by the second prism module, the included angle between the infrared light passing through the second prism module and the normal line of the display module is reduced from the second angle value to the first angle value, even if the error between the included angle between the infrared light emitted from the bottom of the display module and the normal line of the display module and the first angle value (namely the angle value of the included angle between the infrared light and the normal line of the display module when entering the display module) is smaller, the included angle between the infrared light and the normal line of the display module is not changed or is smaller after the infrared light passes through the display module, so that the fingerprint recognition module arranged below the display module can not divide images acquired according to the infrared light reflected by fingers into a plurality of sub images, and fingerprint recognition modules can recognize the infrared light reflected by fingers, thereby improving the user experience.
In one embodiment, as shown in fig. 1b, the display module 100 further includes an infrared transmitting reflective sheet 105 disposed between the light guide plate 103 and the second prism module 104, wherein a non-reflective surface of the infrared transmitting reflective sheet 105 faces the second prism module 104, and a reflective surface of the infrared transmitting reflective sheet 105 faces the light guide plate 103.
The infrared transmitting reflective sheet is exemplified to reflect visible light incident from the reflective surface and to transmit infrared light incident from both the reflective surface and the non-reflective surface through the infrared transmitting reflective sheet.
Through setting up infrared transmission reflector plate between light guide plate and second prism module, can be under the prerequisite that does not change the infrared ray light path through infrared transmission reflector plate, the visible light that will light guide plate launched is to the reflection of light guide plate to under the prerequisite that does not influence the normal work of display module assembly below fingerprint identification module, increase the luminance of the visible light of directive liquid crystal layer, improved user experience.
In one embodiment, as shown in fig. 1c, the display module 100 further includes a visible light diffusion sheet 106 disposed between the first prism module 102 and the light guide plate 103.
Through setting up the visible light diffusion piece between first prism module and light guide plate, can make the light that the light guide plate launched more even the shining on the liquid crystal layer after the diffusion of visible light diffusion piece, ensure that the liquid crystal layer is luminous even to user experience has been improved.
In one embodiment, as shown in fig. 1d, the display module 100 further includes a fingerprint recognition module 107 disposed under the second prism module 104, and the fingerprint recognition module 107 includes an infrared light emitter 117 and an infrared light sensor 127.
By arranging the fingerprint identification module under the second prism module, the display module can have the fingerprint identification function.
In one embodiment, as shown in fig. 1e, the display module 100 further includes a frame 108, and the first prism module 102, the light guide plate 103, and the second prism module 104 are all fixed in the frame 108.
The first prism module, the visible light diffusion sheet, the light guide plate, the infrared transmitting reflection sheet and the second prism module can be further stacked in sequence and fixed in the frame. The liquid crystal layer may be adhered to the bezel. The display module may further include a light source module, which may be disposed at a side of the light guide plate and fixed on an inner wall of the frame.
Through all fixing first prism module, light guide plate and second prism module in the frame, can ensure that first prism module, light guide plate and second prism module can not relative movement, reduce the probability that leads to the display module assembly to break down because of first prism module, light guide plate and second prism module relative movement.
An embodiment of the present disclosure provides an electronic device, as shown in fig. 2, including a display module of any one of fig. 1a1 to 1 e.
In the technical scheme provided by the embodiment of the disclosure, electronic equipment includes display module, display module includes from last liquid crystal layer, first prism module, light guide plate and the second prism module that sets gradually down, wherein first prism module and second prism module include N piece prism membrane respectively, N is greater than or equal to 1, the income plain noodles of prism membrane in the first prism module is towards the light guide plate, the play plain noodles of prism membrane in the first prism module is towards the liquid crystal layer, the income plain noodles of prism membrane in the second prism module is towards the light guide plate, the play plain noodles of prism membrane in the second prism module is towards the bottom surface of display module, wherein the incident angle of light on the income plain noodles is greater than the exit angle of light on play plain noodles. In the display module, if the fingerprint above the display module reflects infrared light, the light path of the reflected infrared light is changed by the first prism module when passing through the first prism module, the included angle between the infrared light and the normal line of the display module is increased from a first angle value to a second angle value, the infrared light passing through the first prism module passes through the second prism module after passing through the light guide plate and is changed by the second prism module, the included angle between the infrared light passing through the second prism module and the normal line of the display module is reduced from the second angle value to the first angle value, even if the error between the included angle between the infrared light emitted from the bottom of the display module and the normal line of the display module and the first angle value (namely the angle value of the included angle between the infrared light and the normal line of the display module when entering the display module) is smaller, the included angle between the infrared light and the normal line of the display module is not changed or is smaller after the infrared light passes through the display module, so that the fingerprint recognition module arranged below the display module can not divide images acquired according to the infrared light reflected by fingers into a plurality of sub images, and fingerprint recognition modules can recognize the infrared light reflected by fingers, thereby improving the user experience.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (6)
1. A display module, comprising: the liquid crystal display device comprises a liquid crystal layer, a first prism module, a light guide plate and a second prism module which are sequentially arranged from top to bottom, wherein the first prism module and the second prism module respectively comprise N prism films, and N is more than or equal to 1;
the light incident surface of the prism film in the first prism module faces the light guide plate, the light emergent surface of the prism film in the first prism module faces the liquid crystal layer, the light incident surface of the prism film in the second prism module faces the light guide plate, and the light emergent surface of the prism film in the second prism module faces the bottom surface of the display module, wherein the incident angle of light on the light incident surface is larger than the emergent angle of light on the light emergent surface; when the reflected infrared light passes through the first prism module and the second prism module, the light path is changed, the included angle between the reflected infrared light and the normal line of the display module is increased from a first included angle to a second included angle after passing through the first prism module, and the included angle between the reflected infrared light and the normal line of the display module is reduced to a first included angle after passing through the second prism module;
the display module assembly further comprises a frame, the first prism module assembly, the light guide plate and the second prism module assembly are all fixed in the frame, and the liquid crystal layer is bonded with the top of the frame and is located on the frame.
2. The display module of claim 1, further comprising an infrared transmissive reflector disposed between the light guide plate and the second prism module, wherein a non-reflective surface of the infrared transmissive reflector faces the second prism module, and wherein a reflective surface of the infrared transmissive reflector faces the light guide plate.
3. The display module of claim 1, further comprising a visible light diffuser disposed between the first prism module and the light guide plate.
4. The display module of claim 1, further comprising a fingerprint recognition module disposed under the second prism module, the fingerprint recognition module comprising an infrared light emitter and an infrared light sensor.
5. The display module of claim 1, further comprising a light source module disposed on a side surface of the light guide plate and fixed on an inner wall of the bezel.
6. An electronic device comprising the display module of any one of claims 1-5.
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| CN201811639243.4A CN111381398B (en) | 2018-12-29 | 2018-12-29 | Display module and electronic equipment |
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| CN201811639243.4A CN111381398B (en) | 2018-12-29 | 2018-12-29 | Display module and electronic equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104182727A (en) * | 2014-05-16 | 2014-12-03 | 深圳印象认知技术有限公司 | Ultra-thin fingerprint and palm print collection device, and fingerprint and palm print collection method |
| CN105974660A (en) * | 2015-03-12 | 2016-09-28 | Lg电子株式会社 | Display device and mobile terminal |
| CN107422526A (en) * | 2016-05-24 | 2017-12-01 | 南昌欧菲生物识别技术有限公司 | Backlight module and electronic equipment |
| CN108241839A (en) * | 2016-12-23 | 2018-07-03 | 创智能科技股份有限公司 | Biological identification device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588835B (en) * | 2012-02-08 | 2016-01-13 | 苏州晶智科技有限公司 | A kind of novel backlight module for liquid crystal display |
| CN207833542U (en) * | 2018-03-14 | 2018-09-07 | 印象认知（北京）科技有限公司 | A kind of display screen |
| WO2020124306A1 (en) * | 2018-12-17 | 2020-06-25 | 深圳市汇顶科技股份有限公司 | Liquid crystal display fingerprint module, in-screen fingerprint recognition system, and electronic device |
-
2018
- 2018-12-29 CN CN201811639243.4A patent/CN111381398B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104182727A (en) * | 2014-05-16 | 2014-12-03 | 深圳印象认知技术有限公司 | Ultra-thin fingerprint and palm print collection device, and fingerprint and palm print collection method |
| CN105974660A (en) * | 2015-03-12 | 2016-09-28 | Lg电子株式会社 | Display device and mobile terminal |
| CN107422526A (en) * | 2016-05-24 | 2017-12-01 | 南昌欧菲生物识别技术有限公司 | Backlight module and electronic equipment |
| CN108241839A (en) * | 2016-12-23 | 2018-07-03 | 创智能科技股份有限公司 | Biological identification device |
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