CN112799250A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN112799250A CN112799250A CN202110199177.9A CN202110199177A CN112799250A CN 112799250 A CN112799250 A CN 112799250A CN 202110199177 A CN202110199177 A CN 202110199177A CN 112799250 A CN112799250 A CN 112799250A
- Authority
- CN
- China
- Prior art keywords
- light
- backlight module
- optical assembly
- shielding portion
- sidewall
- 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
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
Abstract
The application discloses backlight unit and display device. The backlight module includes: the backlight module comprises a back plate, a first optical assembly, a second optical assembly and a first shading part. The back plate includes a bottom plate and a sidewall disposed around an edge of the bottom plate. The first optical assembly is positioned at one side of the bottom plate, which is provided with the side wall, and the first optical assembly is positioned at the inner side of the side wall. The second optical assembly is positioned on one side of the first optical assembly, which is far away from the bottom plate, one side of the second optical assembly, which is close to the bottom plate, is attached to one end of the side wall, and one end of the second optical assembly extends to the outer side of the side wall. The first light shielding portion is bonded to the outer side of the side wall and one end of the second optical member. The backlight module that this application provided can make display device's frame littleer, and increase display device's whole screen accounts for than.
Description
Technical Field
The application relates to the technical field of display, in particular to a backlight module and a display device.
Background
A Liquid Crystal Display (LCD) has many advantages such as a thin body, power saving, and no radiation, and is widely used. The conventional liquid crystal display device mainly includes a backlight module and a liquid crystal panel mounted above the backlight module. The backlight module of the liquid crystal display device can be divided into a direct type and a side type according to the distribution of the light source positions. The thickness of the side-in type backlight module is thinner, which is beneficial to realizing an ultrathin liquid crystal display device. The side-in type backlight module in the prior art generally includes a back plate, a rubber frame, an optical assembly, a light-shielding tape, a light source, and the like.
With the development of technology, ultra-thin and narrow-bezel liquid crystal display devices become the mainstream of the market. The ultra-thin liquid crystal display device can be realized by using a side-in type backlight module. However, the side-in type backlight module in the prior art is affected by the structure, and the distance between the backlight module and the side edge of the liquid crystal panel is still large, which is not favorable for realizing the liquid crystal display device with narrow frame.
Disclosure of Invention
An object of the application is to provide a backlight unit of narrow frame to solve the problem of liquid crystal disply device frame broad.
The embodiment of the application provides a backlight module, include:
a back plate comprising a bottom plate and sidewalls disposed around an edge of the bottom plate;
the first optical assembly is positioned on one side of the bottom plate, where the side wall is arranged, and the first optical assembly is positioned on the inner side of the side wall;
the second optical assembly is positioned on one side of the first optical assembly, which is far away from the bottom plate, one side of the second optical assembly, which is close to the bottom plate, is attached to one end of the side wall, and one end of the second optical assembly extends to the outer side of the side wall;
and a first light shielding part bonded to an outer side of the sidewall and one end of the second optical member.
In some embodiments, the backlight module further comprises a second light shielding part attached to the inner surface of the sidewall, and a gap is formed between the second light shielding part and the first optical assembly.
In some embodiments, the second light blocking portion extends from an end of the sidewall near the bottom plate to an end of the sidewall away from the bottom plate, and the height of the second light blocking portion is greater than the height of the first optical assembly.
In some embodiments, the second light blocking portion is black nickel.
In some embodiments, the backlight module further comprises a third light shielding portion located between the first optical assembly and the second optical assembly, and an end of the third light shielding portion near the sidewall is aligned with an end of the first optical assembly near the sidewall.
In some embodiments, the third light shielding portion is a light shielding tape.
In some embodiments, the first light shielding portion is a light shielding rubber.
In some embodiments, the first optical assembly comprises a reflective sheet, a light guide plate, a diffusion film and a brightness enhancement film which are sequentially stacked, wherein one side of the reflective sheet, which is far away from the light guide plate, is attached to the bottom plate.
In some embodiments, the second optical assembly includes a lower polarizer and a glass plate, one side of the lower polarizer close to the back plate is attached to one end of the side wall, the glass plate is located on one side of the lower polarizer far from the bottom plate, and one ends of the lower polarizer and the glass plate close to the side wall are bonded to the outer sides of the first light shielding portion and the side wall.
The embodiment of the application also provides a display device, and the display device comprises the backlight module.
The embodiment of the application provides a backlight unit, through getting rid of the gluey frame among the traditional backlight unit, optical assembly among the backlight unit is closer to the lateral wall of backplate, is favorable to dwindling the thickness of frame, and increase display device's whole screen accounts for the ratio. The backlight module that this application provided still is provided with first shading portion. The first light shielding portion is bonded to the outer side of the side wall and one end of the second optical member. The first shading part can absorb light, effectively reduces side bright lines of the backlight module and further improves the picture quality of the backlight module. Meanwhile, the backlight module also plays a role in fixing and sealing, so that the relative position of the back plate and the second optical assembly can be prevented from changing, the water vapor and air are further prevented from entering, the optical assemblies in the backlight module are protected, and the service life of the backlight module is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments and implementations of the application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a backlight module according to a first implementation manner of an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a backlight module according to a second implementation manner of the embodiment of the present application;
fig. 3 is a schematic structural diagram of a backlight module according to a third embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a fourth implementation manner of a backlight module provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a backlight module according to a fifth implementation manner provided in the embodiment of the present application;
fig. 6 is a schematic structural diagram of a display device 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 should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the 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.
It should be noted that the numerical terms "first," "second," "third," and the like, when used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The directional terms used in this application, such as [ upper ], [ lower ], [ left ], [ right ], refer to the directions in the attached drawings only. The positional relationship terms such as [ one end ], [ other end ], [ inner side ], [ outer side ] and the like referred to in this application are used only for distinguishing different parts. Accordingly, the use of ordinal, directional and positional terms is to be taken as an illustration and understanding of the application and is not intended to limit the application. Like reference numerals refer to like elements throughout the specification. Because the dimensions and thicknesses of the various components illustrated in the drawings are presented for ease of illustration, the present disclosure is not necessarily limited to the illustrated dimensions and thicknesses of the various components.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a backlight module according to a first embodiment of the present disclosure. The backlight module 100 provided by the embodiment of the present application includes a back plate 10, a first optical assembly 20, a second optical assembly 30, and a first light shielding portion 40. The back plate 10 includes a bottom plate 101 and sidewalls 102, the sidewalls 102 being disposed around edges of the bottom plate 101. The sidewall 102 includes an inner side and an outer side. The first optical element 20 in this application is located at the side of the bottom plate 101 where the side wall 102 is located, and the first optical element 20 is located at the inner side of the side wall 102. The second optical assembly 30 is located on a side of the first optical assembly 20 away from the bottom plate 101, a side of the second optical assembly 30 close to the bottom plate 101 is attached to one end of the sidewall 102, and one end of the second optical assembly 30 extends to an outer side of the sidewall 102. The first light shielding portion 40 is bonded to the outside of the sidewall 102 and one end of the second optical member 30.
The back sheet 10 may be a metal back sheet. Specifically, the material of the back plate 10 may be iron, aluminum, an aluminum alloy, a galvanized steel sheet, or the like, and the material of the back plate 10 may be selected as needed, which is not particularly limited herein. The back plate 10 may be formed by bending a metal plate to integrally form the bottom plate 101 and the side wall 102, or the back plate 10 may be formed by welding a metal plate. The back plate 10 made of a metal plate has a high hardness, and can support and protect the entire backlight module 100. The sidewalls 102 may be double-folded sidewalls 102 as shown in fig. 1, and the double-folded sidewalls 102 may ensure the supporting strength of the back plate 10, thereby improving the overall stability of the backlight module 100. It should be noted that the back plate 10 may also adopt only one side wall 102 as shown in fig. 2, and the shape of the side wall 102 may be designed into other shapes according to actual requirements.
The first optical element 20 is located inside the sidewall 102 and the gap 50 is formed between the first optical element 20 and the sidewall 102, so as to prevent the sidewall 102 from directly contacting the first optical element 20 to affect the light emitting effect of the backlight module 100. The first optical assembly 20 includes a reflective sheet 201, a light guide plate 202, a diffusion film 203, and a brightness enhancement film 204 stacked in this order, and one side of the reflective sheet 201 away from the light guide plate 202 is bonded to the base plate 101. The side of the brightness enhancement film 204 away from the base plate 101 is attached to the second optical assembly 30.
The light source (not shown) of the edge-type backlight module 100 is disposed on at least one side surface of the light guide plate 202. The Light source may be a Cold Cathode Fluorescent Lamp (CCFL), a hot Cathode Fluorescent Lamp, a Light Emitting Diode (LED), an Electroluminescent (EL) sheet, or the like, and the Light source may be selected according to the need, and is not limited specifically herein.
Light from the light source enters from the end face of the light guide plate 202. The light guide plate 202 is located on a side of the reflective sheet 201 away from the bottom plate 101. The light guide plate 202 may be an optical grade organic glass or Polycarbonate (PC) plate, and the material of the light guide plate 202 may be selected according to the need, and is not particularly limited. The light guide plate 202 has a high refractive index and does not absorb light, and can convert a linear light source in the edge-type backlight module 100 into a surface light source.
The side of the reflective sheet 201 away from the light guide plate 202 is attached to the bottom plate 101. The material of the reflective sheet 201 may be Polyethylene terephthalate (PET), Polypropylene (Polypropylene), PC, or the like, and the material of the light guide plate 202 may be selected according to needs, and is not particularly limited herein. The reflective sheet 201 is used to reflect the light exposed at the bottom back into the light guide plate 202, so as to prevent the light from leaking out, and make full use of the light in the light source.
After exiting the light guide plate 202, the light enters the diffusion film 203. The diffusion film 203 is located on a side of the light guide plate 202 away from the reflective sheet 201. A certain proportion of scattering particles having different refractive indices are uniformly dispersed in the diffusion film 203, or the diffusion film 203 forms an uneven surface in a certain direction. The light is scattered in the diffusion film 203 or the uneven surface is refracted, reflected and scattered many times, so that the light is corrected and the optical diffusion effect is realized.
After exiting from the diffusion film 203, the light enters the brightness enhancement film 204. The brightness enhancement film 204 is located on the side of the diffusion film 203 away from the light guide plate 202. The material of the brightness enhancement film 204 may be Polyester (Polyester), PC, or the like, and the material of the brightness enhancement film 204 may be selected as needed, and is not particularly limited. Since the directivity of light is poor after the light is emitted from the diffusion film 203, the direction of light needs to be corrected by the brightness enhancement film 204. The surface of the brightness enhancement film 204 is in a prismatic or semi-cylindrical structure. The light is refracted and reflected after passing through the brightness enhancement film 204, so that the effects of condensing the light and improving the front luminance are achieved, the use benefit of the light after being emitted from the diffusion film 203 can be increased, and the luminance of the whole backlight module 100 can be improved by more than 60% -100%.
The second optical assembly 30 includes a lower polarizer 301 and a glass plate 302, wherein one side of the lower polarizer 301 close to the backplane 10 is attached to one end of the sidewall 102, the glass plate 302 is located on one side of the lower polarizer 301 away from the bottom plate 101, and one ends of the lower polarizer 301 and the glass plate 302 are attached to the outer sides of the first light-shielding portion 40 and the sidewall 102.
After exiting from the brightness enhancement film 204, the light enters the lower polarizer 301. The lower polarizer 301 is used to convert natural light into polarized light, so that the liquid crystal display device realizes normal display. The glass plate 302 functions to support and protect the backlight assembly 100 and the liquid crystal panel.
One side of the lower polarizer 301 close to the back plate 10 is attached to one end of the sidewall 102, and one end of the lower polarizer 301 extends to the outside of the sidewall 102. The bottom plate 101, the side wall 102 and the lower polarizer 301 form a sealed space, which can block water vapor and air and prevent light from leaking.
Further, the first light-shielding portion 40 is disposed in the backlight module 100, and the first light-shielding portion 40 is bonded to the outer side of the sidewall 102, one end of the lower polarizer 301, and one end of the glass plate 302 by a dispensing process. Dispensing refers to a process of dropping a glue material into the backlight module 100, which can perform the fixing and sealing functions. By providing the first light shielding portion 40, the relative positions of the lower polarizer 301 and the glass plate 302 to the rear plate 10 are less likely to change. Meanwhile, the first light shielding portion 40 can further block the ingress of moisture and air, protecting the optical components in the backlight module 100. The first light shielding portion 40 is made of a light shielding adhesive material, and specifically, the light shielding adhesive material may be a hot melt adhesive material with a light absorption function. The light-shielding plastic material can absorb light, thereby effectively reducing side bright lines of the backlight module 100 and improving the picture quality of the backlight module 100.
The traditional backlight module comprises a rubber frame, so that the frame of the backlight module is thicker, and the screen of the assembled display device occupies a smaller area. The backlight module 100 that this application embodiment provided has reduced gluey frame, can reduce backlight module 100's frame thickness for the holistic frame of display screen is littleer, has increased the occupation ratio of display screen. Meanwhile, the backlight module 100 of the present application is additionally provided with the first light-shielding portion 40, which can effectively reduce the side bright lines of the backlight module 100 and improve the picture quality of the backlight module 100. The first light-shielding portion 40 is bonded to the outer side of the sidewall 102, one end of the lower polarizer 301 and one end of the glass plate 302 by a dispensing process, so that the relative positions of the lower polarizer 301 and the glass plate 302 with respect to the back plate 10 are not easily changed, and meanwhile, the damage of the optical assembly caused by the water vapor entering the backlight module 100 is prevented, and the service life of the backlight module 100 is prolonged.
Referring to fig. 3, in a third implementation manner provided in the embodiment of the present application, the backlight module 100 further includes a second light shielding portion 60. The second light-shielding portion 60 is attached to the inner surface of the sidewall 102, and a gap 50 is formed between the second light-shielding portion 60 and the first optical element 20, so that the first optical element 20 is ensured not to contact with the second light-shielding portion 60, and the light-emitting effect of the backlight module 100 is prevented from being affected by the direct contact between the second light-shielding portion 60 and the first optical element 20.
The second light shielding portion 60 extends from an end of the sidewall 102 close to the bottom plate 101 to an end of the sidewall 102 far from the bottom plate 101, wherein the height of the second light shielding portion 60 is greater than the height of the first optical assembly 20. The light emitted from the first optical assembly 20 is reflected by the back plate 10, which easily causes the generation of side bright lines. By arranging the second light-shielding portion 60 inside the sidewall 102 of the back plate 10, the second light-shielding portion 60 extends from one end of the sidewall 102 close to the bottom plate 101 to one end of the sidewall 102 far from the bottom plate 101, and the second light-shielding portion 60 can effectively absorb light rays emitted from the light guide plate 202 and the reflective sheet 201, thereby reducing side bright lines of the backlight module 100. In addition, the height of the second light shielding portion 60 is greater than that of the first optical assembly 20, so that light emitted from the first optical assembly 20 can be absorbed, and light leakage of the backlight module 100 can be effectively prevented.
The material used for the second light-shielding portion 60 is black nickel. The black nickel is a coating which integrates nickel, zinc, sulfur and organic matters into a whole and is black. The black nickel has a light extinction effect and can effectively absorb light emitted from the light guide plate 202 and the reflective sheet 201. Specifically, the thickness of the black nickel is 3 to 5 microns, and the thickness of the black nickel may be 3 microns, 3.2 microns, 3.5 microns, 3.8 microns, 4 microns, 4.2 microns, 4.5 microns, 4.8 microns, or 5 microns. The specific thickness of the black nickel is determined by the specific requirements of the backlight module 100. The black nickel within the thickness range does not affect the width of the frame of the backlight module 100. In some embodiments, the material used for the second light blocking portion 60 may be black ink. The light emitted from the light guide plate 202 and the reflective sheet 201 can be effectively absorbed by the second light-shielding portion 60, so that the problem of high brightness around the light source in the backlight module 100 due to strong reflection of the sidewall 102 on the light in the conventional technology can be solved, the side bright lines of the backlight module 100 are effectively reduced, and the light-emitting uniformity of the backlight source is improved.
Referring to fig. 4, in a fourth embodiment provided in the present application, the backlight module 100 further includes a third light shielding portion 70. The third light shielding portion 70 is located between the first optical assembly 20 and the second optical assembly 30, and one end of the third light shielding portion 70 is aligned with one end of the first optical assembly 20. Specifically, the third light shielding portion 70 is located between the brightness enhancement film 204 and the lower polarizer 301. The third light shielding portion 70 is located at an edge position of the bright enhancement film 204 and the lower polarizer 301. The material of the first light shielding portion 40 is a light shielding tape made of a light absorbing material, for example, the material of the light shielding tape may be black PET, PC, graphite, or silicon (Si). Both sides of the third light shielding portion 70 have adhesive properties, and can function to attach the first optical assembly 20 and the second optical assembly 30 and to fix the relative positions of the first optical assembly 20 and the second optical assembly 30. Meanwhile, the third light-shielding portion 70 has light absorption property, so as to block the leakage above the first optical assembly 20, thereby achieving the effect of reducing the side bright lines of the backlight module 100.
Referring to fig. 5, in a fifth embodiment provided in the present application, a backlight module 100 includes a first light shielding portion 40, a second light shielding portion 60, and a third light shielding portion 70. The first light shielding portion 40 is bonded to the outer side of the sidewall 102 and one end of the lower polarizer 301 and the glass plate 302. The second light-shielding portion 60 is attached to the inner surface of the sidewall 102, and the second light-shielding portion 60 extends from one end of the sidewall 102 close to the bottom plate 101 to one end of the sidewall 102 far from the bottom plate 101. The third light shielding portion 70 is located between the brightness enhancement film 204 and the lower polarizer 301. The materials of the first light-shielding portion 40, the second light-shielding portion 60 and the third light-shielding portion 70 are all light-absorbing, so that the light emitted from the first optical assembly 20 can be absorbed, the side bright lines of the backlight module 100 can be effectively reduced, and the picture quality of the backlight module 100 can be improved. The first light-shielding portion 40 is bonded to the outer side of the sidewall 102, one end of the lower polarizer 301 and one end of the glass plate 302, so that the relative positions of the lower polarizer 301 and the glass plate 302 with respect to the backplane 10 are not easily changed, and meanwhile, the damage of the optical assembly caused by the water vapor entering the backlight module 100 is prevented, and the service life of the backlight module 100 is prolonged. Both sides of the third light-shielding portion 70 have viscosity, so that the light-adding film 204 and the lower polarizer 301 can be attached and the relative position of the light-adding film 204 and the lower polarizer 301 can be fixed, thereby enhancing the stability of the backlight module 100. The backlight module 100 provided by the application cancels a rubber frame in the traditional backlight module 100, so that the boundary of the backlight module 100 is smaller, and the occupation ratio of the whole display screen is larger. In order to reduce the generation of side bright lines and improve the stability of the backlight module 100, the backlight module 100 provided by the present application is additionally provided with the first light-shielding portion 40, the second light-shielding portion 60 and the third light-shielding portion 70. The first light shielding portion 40 is bonded to the outside of the sidewall 102 and one end of the second optical member 30. The third light shielding part 70 is bonded to the first optical assembly 20 and the second optical assembly 30 at both ends thereof, so that the stability of the backlight module 100 can be improved. The materials of the first light-shielding portion 40, the second light-shielding portion 60 and the third light-shielding portion 70 all have light absorption, so that the backlight module 100 realizes a narrow frame and reduces the generation of side bright lines, thereby improving the picture quality of the backlight module 100.
The backlight unit that this application embodiment provided has reduced the gluey frame among the traditional backlight unit, can reduce backlight unit's frame thickness for the holistic frame of display screen is littleer, has increased the proportion of display screen. The backlight module is additionally provided with the first shading part, so that side bright lines of the backlight module can be effectively reduced, and the picture quality of the display device is improved. The first shading part is bonded with the outer side of the side wall, one end of the lower polarizer and one end of the glass plate, so that the relative positions of the lower polarizer and the glass plate with the back plate are not easy to change, and meanwhile, water vapor is prevented from entering the backlight module to cause the damage of the optical assembly, and the service life of the backlight module is prolonged.
Correspondingly, the present application further provides a display device 1000, which includes the backlight module 100 as described above. Referring to fig. 6, the display device 1000 includes the backlight module 100 and other components, such as a display screen, a bracket, a cover plate, a heat sink, a camera, etc., which need to be assembled into the display device 1000.
The display Device 1000 may be at least one of a smart Phone (Smartphone), a Tablet Personal Computer (Tablet Personal Computer), a Mobile Phone (Mobile Phone), a video Phone, an electronic Book Reader (E-Book Reader), a Desktop Computer (Desktop PC), a Laptop PC (Laptop PC), a Netbook (Netbook Computer), a Workstation (Workstation), a server, a Personal Digital Assistant (Personal Digital Assistant), a Portable media Player (Portable Multimedia Player), a Mobile medical Device, a camera, a game machine, a Digital camera, a car navigation Device, an electronic billboard, an automatic teller machine, or a Wearable Device (Wearable Device).
The display device that this application embodiment provided has reduced the gluey frame in the backlight unit, can reduce backlight unit's frame thickness for the holistic frame of display screen is littleer, has increased the proportion of display screen. The display device provided by the application is additionally provided with the first shading part in the backlight module, so that the side bright lines of the backlight module can be effectively reduced, and the picture quality of the display device is improved. The first shading part is bonded with the outer side of the side wall, one end of the lower polarizer and one end of the glass plate, so that the relative positions of the lower polarizer and the glass plate with the back plate are not easy to change, and meanwhile, water vapor is prevented from entering the backlight module to cause the damage of the optical assembly, and the service life of the display device is prolonged.
In summary, although the embodiments of the present application are described in detail above, the above-mentioned embodiments are not intended to limit the present application, and it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.
Claims (10)
1. A backlight module, comprising:
a back plate comprising a bottom plate and sidewalls disposed around an edge of the bottom plate;
the first optical assembly is positioned on one side of the bottom plate, where the side wall is arranged, and the first optical assembly is positioned on the inner side of the side wall;
the second optical assembly is positioned on one side of the first optical assembly, which is far away from the bottom plate, one side of the second optical assembly, which is close to the bottom plate, is attached to one end of the side wall, and one end of the second optical assembly extends to the outer side of the side wall;
and a first light shielding part bonded to an outer side of the sidewall and one end of the second optical member.
2. The backlight module as claimed in claim 1, further comprising a second light-shielding portion attached to the inner surface of the sidewall, wherein a gap is provided between the second light-shielding portion and the first optical assembly.
3. A backlight module according to claim 2, wherein the second light shielding portion extends from an end of the sidewall near the bottom plate to an end of the sidewall away from the bottom plate, and the height of the second light shielding portion is greater than the height of the first optical assembly.
4. The backlight module as claimed in claim 2, wherein the second light-shielding portion is black nickel.
5. The backlight module of claim 1, further comprising a third light blocking portion between the first optical assembly and the second optical assembly, wherein an end of the third light blocking portion adjacent the sidewall is aligned with an end of the first optical assembly adjacent the sidewall.
6. The backlight module as claimed in claim 5, wherein the third light-shielding portion is a light-shielding tape.
7. The backlight module as claimed in claim 1, wherein the first light-shielding portion is made of a light-shielding plastic material.
8. The backlight module according to claim 1, wherein the first optical assembly comprises a reflector plate, a light guide plate, a diffusion film and a brightness enhancement film, which are sequentially stacked, and one side of the reflector plate, which is far away from the light guide plate, is attached to the bottom plate.
9. The backlight module as claimed in claim 1, wherein the second optical assembly includes a bottom polarizer and a glass plate, one side of the bottom polarizer close to the back plate is attached to one end of the sidewall, the glass plate is located on one side of the bottom polarizer away from the bottom plate, and one ends of the bottom polarizer and the glass plate close to the sidewall are bonded to the first light-shielding portion and the outer side of the sidewall.
10. A display device, characterized in that the display device comprises a backlight module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110199177.9A CN112799250A (en) | 2021-02-22 | 2021-02-22 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110199177.9A CN112799250A (en) | 2021-02-22 | 2021-02-22 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112799250A true CN112799250A (en) | 2021-05-14 |
Family
ID=75815364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110199177.9A Pending CN112799250A (en) | 2021-02-22 | 2021-02-22 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112799250A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113934036A (en) * | 2021-10-25 | 2022-01-14 | 京东方科技集团股份有限公司 | Display module assembly and display device with same |
| CN113990184A (en) * | 2021-10-13 | 2022-01-28 | 深圳创维－Rgb电子有限公司 | Display screen, display device and preparation method of display screen |
| CN114241919A (en) * | 2021-12-29 | 2022-03-25 | 重庆惠科金渝光电科技有限公司 | Backlight module and display device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1078579A (en) * | 1996-09-05 | 1998-03-24 | Citizen Watch Co Ltd | Liquid crystal display device |
| CN104791670A (en) * | 2015-05-05 | 2015-07-22 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN107340643A (en) * | 2017-08-26 | 2017-11-10 | 武汉华星光电技术有限公司 | A kind of backlight module and display |
| CN207008250U (en) * | 2017-08-11 | 2018-02-13 | 合肥京东方显示光源有限公司 | A kind of glue frame, backlight source module and display device |
| CN108181761A (en) * | 2017-12-21 | 2018-06-19 | 武汉华星光电技术有限公司 | Display and its backlight module |
| CN207764405U (en) * | 2018-02-07 | 2018-08-24 | 深圳创维－Rgb电子有限公司 | Backlight module and liquid crystal display device |
| CN109307943A (en) * | 2018-10-30 | 2019-02-05 | 武汉华星光电技术有限公司 | Backlight module and narrow frame liquid crystal display die set |
| CN110333628A (en) * | 2019-07-09 | 2019-10-15 | 武汉华星光电技术有限公司 | A kind of backlight module and display device |
-
2021
- 2021-02-22 CN CN202110199177.9A patent/CN112799250A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1078579A (en) * | 1996-09-05 | 1998-03-24 | Citizen Watch Co Ltd | Liquid crystal display device |
| CN104791670A (en) * | 2015-05-05 | 2015-07-22 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN207008250U (en) * | 2017-08-11 | 2018-02-13 | 合肥京东方显示光源有限公司 | A kind of glue frame, backlight source module and display device |
| CN107340643A (en) * | 2017-08-26 | 2017-11-10 | 武汉华星光电技术有限公司 | A kind of backlight module and display |
| CN108181761A (en) * | 2017-12-21 | 2018-06-19 | 武汉华星光电技术有限公司 | Display and its backlight module |
| CN207764405U (en) * | 2018-02-07 | 2018-08-24 | 深圳创维－Rgb电子有限公司 | Backlight module and liquid crystal display device |
| CN109307943A (en) * | 2018-10-30 | 2019-02-05 | 武汉华星光电技术有限公司 | Backlight module and narrow frame liquid crystal display die set |
| CN110333628A (en) * | 2019-07-09 | 2019-10-15 | 武汉华星光电技术有限公司 | A kind of backlight module and display device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990184A (en) * | 2021-10-13 | 2022-01-28 | 深圳创维－Rgb电子有限公司 | Display screen, display device and preparation method of display screen |
| CN113934036A (en) * | 2021-10-25 | 2022-01-14 | 京东方科技集团股份有限公司 | Display module assembly and display device with same |
| CN113934036B (en) * | 2021-10-25 | 2023-10-13 | 京东方科技集团股份有限公司 | Display module and display device with same |
| CN114241919A (en) * | 2021-12-29 | 2022-03-25 | 重庆惠科金渝光电科技有限公司 | Backlight module and display device |
| US11747677B2 (en) | 2021-12-29 | 2023-09-05 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Backlight module and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112799250A (en) | Backlight module and display device | |
| US7559683B2 (en) | Backlight assembly, light guiding plate including plurality of discontinuously formed prisms | |
| CN109765720B (en) | Liquid crystal display device having a plurality of pixel electrodes | |
| CN102597603B (en) | Planar lighting device and display apparatus provided with same | |
| US10302837B2 (en) | Backlight unit and liquid crystal display including the same | |
| US8643806B2 (en) | Liquid crystal display device | |
| US9454038B2 (en) | Display device including adhesive sheet attached to bottom chassis | |
| US9304245B2 (en) | Display device including a light guide bonded to a display panel | |
| US9482900B2 (en) | Display device | |
| US20060221273A1 (en) | Diffusion plate, backlight assembly having the same and display device having the same | |
| JP5373180B2 (en) | Surface light source device and liquid crystal display device including the surface light source device | |
| US20130128190A1 (en) | Backlight Module and LCD Device | |
| KR20170013696A (en) | Light-Diffusing Lens and Backlight Unit and Display Device having the same | |
| US20210405431A1 (en) | Display assembly and manufacturing method for display assembly | |
| US20210333468A1 (en) | Backlight module and display device | |
| WO2023160643A1 (en) | Display module and display device | |
| KR102033617B1 (en) | Liquid Crystal Display Device with Narrow Bezel Area | |
| US20150159831A1 (en) | Optical element and light emitting device including the same | |
| CN115176197B (en) | Optical film, backlight module and display device | |
| US7524099B2 (en) | Liquid crystal display | |
| KR101705899B1 (en) | Edge type backlight unit and liquid crystal display device using the same | |
| KR20120068498A (en) | Light guide plate, backlight unit having the same and liquid crystal display device and method thereof | |
| KR102090606B1 (en) | Liquid Crystal Display Device | |
| CN102591065A (en) | Composite optical sheet used for LCD (liquid crystal display) backlight module | |
| KR102130140B1 (en) | Liquid crystal display |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210514 |