CN111665590A - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN111665590A CN111665590A CN202010597135.6A CN202010597135A CN111665590A CN 111665590 A CN111665590 A CN 111665590A CN 202010597135 A CN202010597135 A CN 202010597135A CN 111665590 A CN111665590 A CN 111665590A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light
- light guide
- area
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
-
- 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
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
Abstract
The application discloses a light guide plate and a backlight module, wherein the light guide plate comprises a light guide plate body and a through hole; the through hole is arranged on the light guide plate body; the light guide plate body comprises a first area and a second area, and the first area and the second area are arranged around the through hole; wherein the first area is close to the light source, and a light absorption layer is arranged on the first area; the second area is far away from the light source, and a light reflecting layer is arranged in the second area. The light-absorbing layer can absorb a large amount of light, bright lines are avoided appearing, the light-reflecting layer can reflect and condense light, and backlight module brightness in the through hole is increased, so that the light-absorbing layer and the light-reflecting layer are added around the through hole, the brightness around the through hole is more uniform, and the display effect is enhanced.
Description
Technical Field
The application relates to the technical field of display, especially, relate to a light guide plate, backlight unit.
Background
Nowadays, people have higher and higher requirements on mobile phones, wherein the screen ratio becomes one of important indexes for measuring the mobile phones. The higher the screen occupation ratio, the larger the area of the mobile phone display area occupied by the mobile phone screen. At present, the current bang screen/water drop screen still occupies a large area of a mobile phone screen due to a front camera and the like of the mobile phone. Therefore, each large mobile phone terminal successively develops the single-hole/double-hole display screen, and the screen occupation area of the camera is reduced to the utmost extent.
The mobile phone backlight is fixed at the back of the mobile phone screen, provides a light source for the display screen, and is corresponding to the single-hole/double-hole display screen, and holes are dug at corresponding positions in the backlight to avoid the front camera. However, since the light source cannot be uniformly spread around the hole after the hole is cut in the light guide plate, the circular hole is easily formed to be bright near the light source side, dark far from the light source side, and uneven brightness around the hole.
Therefore, the prior art has defects and needs to be improved urgently.
Disclosure of Invention
The embodiment of the application provides a light guide plate, backlight unit increase a light absorbing layer and a reflector layer around the through-hole, solve effectively and be close to light source side through-hole and shine, keep away from light source side through-hole and send dark, lead to the uneven problem of through-hole luminance all around.
The embodiment of the application provides a light guide plate, which comprises a light guide plate body and a through hole; the through hole is arranged on the light guide plate body; the light guide plate body comprises a first area and a second area, and the first area and the second area are arranged around the through hole; wherein the first area is close to the light source, and a light absorption layer is arranged on the first area; the second area is far away from the light source, and a light reflecting layer is arranged in the second area.
In some embodiments, the first region includes a first upper surface and a first lower surface, the light absorbing layer being disposed on at least one of the first upper surface and the first lower surface; the second region comprises a second upper surface and a second lower surface, and the light reflecting layer is arranged on at least one of the second upper surface and the second lower surface.
In some embodiments, the light absorbing layer and the light reflecting layer are both crescent-shaped, and the area enclosed by the light absorbing layer and the light reflecting layer is circular, and the diameter of the circle is equal to the aperture of the through hole.
In some embodiments, a mesh point is disposed on one side of the light guide plate body, the size of the mesh point is between 0.2mm and 1mm, and the pitch of the mesh point is greater than or equal to 1 mm.
In some embodiments, the material of the light absorbing layer is at least one of a black light absorbing ink and a black light absorbing tape.
In some embodiments, the material of the light reflecting layer is at least one of white light reflecting ink and white light reflecting adhesive tape.
In some embodiments, the material of the light guide plate is one of polymethyl methacrylate, thermoplastic resin, polycarbonate, MS material, and glass.
The embodiment of the present application further provides a backlight module, including: a light guide plate according to any one of claims 1 to 7; the display screen is arranged on one side of the light guide plate; the brightness enhancement film is arranged between the light guide plate and the display screen; the reflector plate is arranged on one side of the light guide plate, which is far away from the display screen; a light source; and the frame body is arranged on the side edge of the frame body and used for providing a light source for the light guide plate, and the frame body is arranged outside the light guide plate and used for fixing the light guide plate.
In some embodiments, the brightness enhancement film is a reflective polarizing brightness enhancement film.
In some embodiments, the reflector plate is a gradual reflector plate, and the reflectivity of the side of the reflector plate far away from the light source is larger than that of the side of the reflector plate near the light source.
The application discloses light guide plate, backlight unit. The light guide plate comprises a light guide plate body and a through hole, and the through hole is formed in the light guide plate body; the light guide plate body comprises a first area and a second area, the first area and the second area are arranged around the through hole, the first area is close to the light source, and the second area is far away from the light source; the position of through-hole can correspond the camera setting, and the unable even propagation of light source around the through-hole passes through the first region sets up a light absorbing layer, and the second region sets up a reflector layer, the light absorbing layer can absorb a large amount of light, avoids appearing the bright line, but the reflector layer reflection spotlight increases through-hole back luminance, can solve effectively and be close to light source side through-hole and shine, keeps away from light source side through-hole and send dark, leads to the uneven problem of through-hole luminance all around.
The backlight module comprises a light guide plate, a display screen, a brightness enhancement film, a reflector plate, a light source and a frame body; in the backlight module, the brightness enhancement film is arranged between the light guide plate and the display screen, the reflector plate is arranged on one side of the light guide plate far away from the display screen, and the light guide plate can greatly improve the utilization rate of a light source through the combination of the brightness enhancement film and the reflector plate, so that the light emitted by the light source is more uniform, the brightness of the display screen is improved, and the display effect is enhanced.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic plan view of a light guide plate according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a light guide plate according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of a light guide plate according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a backlight module according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Specifically, referring to fig. 1, fig. 1 is a schematic plan view of a light guide plate 10 according to an embodiment of the present disclosure. The embodiment of the present application provides a light guide plate 10, which includes a light guide plate body 100 and a through hole 130; the through hole 130 is disposed on the light guide plate body 100; the light guide plate body 100 includes a first region 110 and a second region 120, and the first region 110 and the second region 120 are disposed around the through hole 130; wherein the first area 110 is close to the light source, and a light absorption layer 111 is disposed on the first area 110; the second region 120 is remote from the light source and a light-reflecting layer 121 is disposed in the second region.
The light absorbing layer 111 and the light reflecting layer 121 are both crescent-shaped, and the area surrounded by the light absorbing layer 111 and the light reflecting layer 121 is circular, and the diameter of the circular area is equal to the aperture of the through hole 130, it can be understood by those skilled in the art that the area surrounded by the light absorbing layer 111 and the light reflecting layer 121 is circular, that is, the area surrounded by the crescent-shaped of the light absorbing layer 111 and the crescent-shaped of the light reflecting layer 121 is circular, wherein the shape of the light absorbing layer 111 and the light reflecting layer 121 can be other shapes as long as the light absorbing layer 111 and the light reflecting layer 121 surround the through hole, and is not limited to the crescent shape.
It can be understood by those skilled in the art that the position of the through hole 130 is not limited to that shown in fig. 1, and may be any position on the light guide plate 10 as long as the position corresponds to the camera.
Specifically, please refer to fig. 2, fig. 2 is a schematic structural diagram of a light guide plate 10 according to an embodiment of the present disclosure. The first region 110 includes a first upper surface 112 and a first lower surface 113, and the light absorbing layer 111 is disposed on at least one of the first upper surface 112 and the first lower surface 113; the second region 120 includes a second upper surface 122 and a second lower surface 123, and the light-reflecting layer 121 is disposed on at least one of the second upper surface 122 and the second lower surface 123. It will be understood by those skilled in the art that the light absorbing layer 111 and the light reflecting layer 121 are not limited to the position shown in fig. 2, and fig. 2 is only one of the arrangement manners, i.e., the light absorbing layer 111 is disposed on the first upper surface 112 of the first region 110, and the light reflecting layer 121 is disposed on the second upper surface 122 of the second region 120. In addition to the arrangement shown in fig. 2, the arrangement positions of the light absorbing layer 111 and the light reflecting layer 121 further include: the light absorbing layer 111 is disposed on the first upper surface 112 of the first region 110, and the light reflecting layer 121 is disposed on the second lower surface 123 of the second region 120; the light absorbing layer 111 is disposed on the first lower surface 113 of the first region 110, and the light reflecting layer 121 is disposed on the second upper surface 122 of the second region 120; the light absorbing layer 111 is disposed on the first lower surface 113 of the first region 110, and the light reflecting layer 121 is disposed on the second lower surface 123 of the second region 120.
It will be understood by those skilled in the art that the light absorbing layer 111 and the light reflecting layer 121 may also be disposed on the sidewall of the through hole 130, i.e. adhered to the sidewall of the through hole 130 in the form of a tape, the light absorbing tape is adhered to the sidewall of the through hole 130 on the side close to the light source, and the light reflecting tape is adhered to the sidewall of the through hole 130 on the side away from the light source.
Specifically, please refer to fig. 3, fig. 3 is a schematic structural diagram of a light guide plate 10 according to an embodiment of the present disclosure. Arranging mesh points 140 on one side of the light guide plate body 100, wherein the mesh points are uniformly distributed on one side of the light guide plate body 100, the size of the mesh points 140 is 0.2mm to 1mm, and the space between the mesh points is larger than or equal to 1 mm; the bottom of the light guide plate is printed with dots 140 that disrupt the overall emission of light, redirecting the light and transmitting it out of the light guide plate.
The material of the mesh points 140 includes silicon dioxide, titanium dioxide and barium sulfide, and it can be understood by those skilled in the art that the content of the silicon dioxide, the titanium dioxide and the barium sulfide in the mesh points 140 can be self-prepared according to the actual situation. The pattern shape of the dots 140 includes at least one of a circle, an ellipse, a square, a hexagon, and other irregular patterns.
In this application, the light absorbing layer 111 is made of at least one of black light absorbing ink and black light absorbing tape, and the light reflecting layer 121 is made of at least one of white light reflecting ink and white light reflecting tape. It will be understood by those skilled in the art that the black light absorbing ink and the white light reflecting ink can be materials commonly used in the art, and the specific materials of the light absorbing layer 111 and the light reflecting layer 121 are not limited in this application as long as the technical effects to be achieved by the present application can be achieved.
The light guide plate is made of one of polymethyl methacrylate, thermoplastic resin, polycarbonate, MS material and glass.
Specifically, please refer to fig. 4, and fig. 4 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure. The embodiment of the present application further provides a backlight module 1, where the backlight module 1 includes a light guide plate 10, and the light guide plate 10 is the light guide plate described in any one of the above embodiments; the display screen 20 is arranged on one side of the light guide plate 10; a brightness enhancement film 30, wherein the brightness enhancement film 30 is disposed between the light guide plate 10 and the display screen 20; the reflecting sheet 40 is arranged on one side of the light guide plate 10 far away from the display screen 20; a light source 50; and a frame 60, the light source 50 is disposed on a side of the frame 60 and is used for providing a light source for the light guide plate 10, and the frame 60 is disposed outside the light guide plate 10 and fixes the light guide plate 10.
It will be understood by those skilled in the art that fig. 4 only shows the structure of the backlight module 1 related to the present application, and other structures not shown are conventional in the art.
The brightness enhancement film 30 is preferably a reflective polarized brightness enhancement film herein, and those skilled in the art will appreciate that the brightness enhancement film 30 is not limited to only a reflective polarized brightness enhancement film herein. The middle of the reflection-type polarized light brightness enhancement film is composed of a multi-film layer structure, the optical layer in the middle is composed of hundreds of optical films with different thicknesses and refractive indexes, and the total thickness of the reflection-type polarized light brightness enhancement film is about 100 mu m. The optical films play a role of a reflection type polarizer, namely natural light (including P wave and S wave) entering the optical film passes through the optical film for hundreds of times of refraction, interference and reflection, the P wave is selectively passed through, and the S wave is reflected back, wherein the vibration direction of the P wave is consistent with the transmission axis direction of a lower polarizer of a liquid crystal box; the reflected S wave reaches the reflector 40 after passing through each film material of the backlight and is reflected and utilized again, and part of the S wave is converted into natural light waves in the process, so that the surface brightness is improved by at least 30% compared with the backlight source without adopting a reflection-type polarization brightness enhancement film, and the viewing angle is hardly influenced while brightness enhancement is performed.
In the present application, the reflective sheet 40 is a reflective sheet with a conventional structure, and it can be understood by those skilled in the art that the reflective sheet 40 can be a silver reflective sheet, that is, a metal film with high conductivity is plated on the surface of the PET substrate, and the metal film can be gold, silver, aluminum, copper or other metal materials; the reflective sheet 40 may be a white reflective sheet, i.e., a sheet composed of a PET substrate and titanium dioxide having a high refractive index sandwiched therebetween. The reflective sheet 40 plays a role in circularly reflecting the light reflected by the brightness enhancement film 30, thereby greatly improving the utilization rate of the light source.
The application discloses a light guide plate 10, backlight unit 1. The light guide plate 10 includes a light guide plate body 100 and a through hole 130, the through hole 130 is disposed on the light guide plate body 100; the light guide plate body 100 includes a first region 110 and a second region 120, the first region 110 and the second region 120 are disposed around the through hole 130, the first region 110 is close to a light source, and the second region 120 is far away from the light source; the position of the through hole 130 can correspond to the camera setting, and the light source can not spread evenly around the through hole 130, through set up a light absorbing layer 111 in the first region 110, and set up a reflector layer 121 in the second region 120, a large amount of light can be absorbed in the light absorbing layer 111, bright lines are avoided appearing, the reflector layer 121 can reflect the spotlight, increase the backlight brightness in the through hole 130, can solve effectively and be close to the light source side through hole 130 and shine, keep away from the light source side through hole 130 and shine dark, lead to the uneven problem of luminance in through hole 130 all around.
The backlight module 1 comprises a light guide plate 10, a display 20, a brightness enhancement film 30, a reflector 40, a light source 50 and a frame 60; in the backlight module 1, the brightness enhancement film 30 is arranged between the light guide plate 10 and the display screen 20, the reflector plate 40 is arranged on one side of the light guide plate 10 far away from the display screen 20, and the light guide plate 10 can greatly improve the utilization rate of the light source 50 through the combination of the brightness enhancement film 30 and the reflector plate 40, so that the light emitted by the light source 50 is more uniform, the brightness of the display screen is improved, and the display effect is enhanced.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The light guide plate and the backlight module provided by the embodiment of the present application are described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A light guide plate is characterized by comprising a light guide plate body and a through hole;
the through hole is arranged on the light guide plate body;
the light guide plate body comprises a first area and a second area, and the first area and the second area are arranged around the through hole; wherein the content of the first and second substances,
the first area is close to the light source, and a light absorption layer is arranged in the first area; the second area is far away from the light source, and a light reflecting layer is arranged in the second area.
2. The light guide plate according to claim 1, wherein the first region includes a first upper surface and a first lower surface, and the light absorbing layer is disposed on at least one of the first upper surface and the first lower surface; the second region comprises a second upper surface and a second lower surface, and the light reflecting layer is arranged on at least one of the second upper surface and the second lower surface.
3. The light guide plate according to claim 1, wherein the light absorbing layer and the light reflecting layer are each crescent-shaped, and the area surrounded by the light absorbing layer and the light reflecting layer is circular, and the diameter of the circle is equal to the aperture of the through hole.
4. The light guide plate according to claim 1, wherein a dot is disposed on one side of the light guide plate body, the size of the dot is between 0.2mm and 1mm, and the pitch of the dot is 1mm or more.
5. The light guide plate according to claim 1, wherein the light absorbing layer is made of at least one of a black light absorbing ink and a black light absorbing tape.
6. The light guide plate according to claim 1, wherein the reflective layer is made of at least one of a white reflective ink and a white reflective tape.
7. The light guide plate according to claim 1, wherein the material of the light guide plate is at least one of polymethylmethacrylate, thermoplastic resin, polycarbonate, MS material, and glass.
8. A backlight module, comprising:
a light guide plate according to any one of claims 1 to 7;
the display screen is arranged on one side of the light guide plate;
the brightness enhancement film is arranged between the light guide plate and the display screen;
the reflector plate is arranged on one side of the light guide plate, which is far away from the display screen;
a light source; and the number of the first and second groups,
the light source is arranged on the side edge of the frame body and used for providing a light source for the light guide plate, and the frame body is arranged outside the light guide plate and used for fixing the light guide plate.
9. The backlight module of claim 8, wherein the brightness enhancement film is a reflective polarized brightness enhancement film.
10. The backlight module as claimed in claim 8, wherein the reflector is a graded reflector, and the reflectivity of the reflector at a side away from the light source is greater than the reflectivity at a side close to the light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010597135.6A CN111665590A (en) | 2020-06-28 | 2020-06-28 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010597135.6A CN111665590A (en) | 2020-06-28 | 2020-06-28 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111665590A true CN111665590A (en) | 2020-09-15 |
Family
ID=72390060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010597135.6A Pending CN111665590A (en) | 2020-06-28 | 2020-06-28 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111665590A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113311529A (en) * | 2021-05-06 | 2021-08-27 | 友达光电（昆山）有限公司 | Light guide plate and backlight module |
| CN113359341A (en) * | 2021-06-24 | 2021-09-07 | 武汉华星光电技术有限公司 | Display module, manufacturing method thereof and mobile terminal |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192450A (en) * | 2011-05-31 | 2011-09-21 | 中航华东光电有限公司 | Backlight module and liquid crystal display device |
| CN102495499A (en) * | 2011-12-06 | 2012-06-13 | 友达光电股份有限公司 | Liquid crystal device |
| CN108427228A (en) * | 2018-02-24 | 2018-08-21 | 武汉天马微电子有限公司 | Backlight module and display device |
| CN108826103A (en) * | 2018-06-29 | 2018-11-16 | 厦门天马微电子有限公司 | A kind of display device |
| CN109782482A (en) * | 2019-01-16 | 2019-05-21 | 柳州阜民科技有限公司 | Electronic equipment |
| CN110031928A (en) * | 2019-04-24 | 2019-07-19 | 京东方科技集团股份有限公司 | Backlight and display panel |
| CN110333626A (en) * | 2019-06-17 | 2019-10-15 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN209590475U (en) * | 2019-03-29 | 2019-11-05 | 深圳市隆利科技股份有限公司 | The backlight module of height screen accounting |
-
2020
- 2020-06-28 CN CN202010597135.6A patent/CN111665590A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192450A (en) * | 2011-05-31 | 2011-09-21 | 中航华东光电有限公司 | Backlight module and liquid crystal display device |
| CN102495499A (en) * | 2011-12-06 | 2012-06-13 | 友达光电股份有限公司 | Liquid crystal device |
| CN108427228A (en) * | 2018-02-24 | 2018-08-21 | 武汉天马微电子有限公司 | Backlight module and display device |
| CN108826103A (en) * | 2018-06-29 | 2018-11-16 | 厦门天马微电子有限公司 | A kind of display device |
| CN109782482A (en) * | 2019-01-16 | 2019-05-21 | 柳州阜民科技有限公司 | Electronic equipment |
| CN209590475U (en) * | 2019-03-29 | 2019-11-05 | 深圳市隆利科技股份有限公司 | The backlight module of height screen accounting |
| CN110031928A (en) * | 2019-04-24 | 2019-07-19 | 京东方科技集团股份有限公司 | Backlight and display panel |
| CN110333626A (en) * | 2019-06-17 | 2019-10-15 | 武汉华星光电技术有限公司 | Backlight module and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113311529A (en) * | 2021-05-06 | 2021-08-27 | 友达光电（昆山）有限公司 | Light guide plate and backlight module |
| CN113359341A (en) * | 2021-06-24 | 2021-09-07 | 武汉华星光电技术有限公司 | Display module, manufacturing method thereof and mobile terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100453398B1 (en) | Lighting devices and liquid crystal displays and electronic devices using them | |
| US11655960B2 (en) | Light diffusing lens and light emitting device including the same | |
| US20220397795A1 (en) | Backlight module and display device | |
| TWI222543B (en) | Liquid crystal display module (LCM) | |
| US20070086191A1 (en) | Optical member, method of manufacturing the optical member, and display device having the optical member | |
| KR100634681B1 (en) | A polarizer, the backlight unit and manufacturing method of polarizer sheet employed in the same | |
| JP2004151342A (en) | Display device and electronic equipment | |
| CN111665590A (en) | Light guide plate and backlight module | |
| US9477117B2 (en) | Optical lens module and backlight unit | |
| KR102266737B1 (en) | lens,light emitting apparatus including the lens, and backlight unit including the apparatus | |
| WO2021190414A1 (en) | Display device | |
| JP2004241237A (en) | Surface lighting system and liquid crystal display device using same | |
| CN111665591A (en) | Light guide plate, backlight module and liquid crystal display module | |
| KR20120135875A (en) | Light guide plate, surface light source device, transmission-type image display device | |
| CN110703367A (en) | Light diffusion lens and light emitting device | |
| CN111983837A (en) | Liquid crystal display device and electronic apparatus | |
| CN111708220A (en) | Backlight source, display substrate and display device | |
| CN106814497B (en) | Semi-transparent semi-reflective display panel, manufacturing method thereof and display device | |
| US20240045134A1 (en) | Display panel and electronic device | |
| CN115176197B (en) | Optical film, backlight module and display device | |
| CN108205170B (en) | Backlight module, display device and electronic equipment | |
| CN111665664B (en) | Flexible display device | |
| KR20090068859A (en) | Polarized light guide plate with wire grid polarizer and liquid crystal display panel | |
| CN109581746B (en) | Backlight module and display device | |
| CN101063725A (en) | Filter assembly for display panel and display apparatus comprising the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200915 |
|
| RJ01 | Rejection of invention patent application after publication |