CN112965296A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN112965296A CN112965296A CN202110288247.8A CN202110288247A CN112965296A CN 112965296 A CN112965296 A CN 112965296A CN 202110288247 A CN202110288247 A CN 202110288247A CN 112965296 A CN112965296 A CN 112965296A
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- light
- backlight module
- guide plate
- concave lens
- light guide
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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
- G02F1/1336—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
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a backlight module and a display device. The backlight module comprises a light guide plate, a circuit board and a light source; the light guide plate is provided with a light incident surface which is provided with an avoiding groove; the circuit board is arranged on the light incident surface and faces the avoiding groove; the light source is arranged on the surface of the circuit board facing the avoidance groove and is electrically connected to the circuit board, and the light source is contained in the avoidance groove. The technical scheme of the invention can improve the problem of light leakage of the conventional backlight module.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module and a display device.
Background
In the conventional side-in backlight module, the light incident surface of the light guide plate is opposite to the light source, and the light source and the light incident surface are arranged at intervals, so that part of light emitted by the light source is emitted from a gap between the light source and the light guide plate, and the light leakage phenomenon occurs.
Disclosure of Invention
The invention provides a backlight module, which aims to solve the problem of light leakage of the conventional backlight module.
To achieve the above object, the present invention provides a backlight module, including:
the light guide plate is provided with a light incident surface, and the light incident surface is provided with an avoiding groove;
the circuit board is arranged on the light incoming surface and faces the avoidance groove; and
the light source is arranged on the surface of the circuit board facing the avoidance groove and is electrically connected to the circuit board, and the light source is contained in the avoidance groove.
In an embodiment of the invention, the light incident surface is provided with a concave lens structure, and a surface of the concave lens structure forms a groove wall of the avoiding groove.
In an embodiment of the invention, the concave lens structure includes a first concave lens and a second concave lens, and the first concave lens and the second concave lens are spliced with each other.
In an embodiment of the invention, a surface of the concave lens structure facing the light source is a smooth surface.
In an embodiment of the invention, the light guide plate further has a light emitting surface, and the light emitting surface is adjacent to the light incident surface.
In an embodiment of the invention, a plurality of recessed portions are disposed on a surface of the light guide plate opposite to the light exit surface.
In an embodiment of the invention, the circuit board abuts against the light incident surface.
In an embodiment of the present invention, the backlight module further includes:
the light guide plate is arranged above the bottom plate;
the side plate is arranged on one side edge of the bottom plate and is opposite to the light incident surface, and the circuit board is arranged on the surface of the side plate facing the light incident surface; and
and the reflector plate is arranged between the bottom plate and the light guide plate.
In an embodiment of the present invention, the backlight module further includes:
the optical diaphragm is arranged on the light emitting surface.
The present invention further provides a display device, which includes a backlight module, wherein the backlight module includes:
the light guide plate is provided with a light incident surface, and the light incident surface is provided with an avoiding groove;
the circuit board is arranged on the light incoming surface and faces the avoidance groove; and
the light source is arranged on the surface of the circuit board facing the avoidance groove and is electrically connected to the circuit board, and the light source is contained in the avoidance groove.
According to the backlight module, the avoiding groove is formed in the light incident surface of the light guide plate, and the light source is accommodated in the avoiding groove, so that more light rays emitted by the light source can be emitted into the light guide plate through the groove wall of the avoiding groove, the possibility that the light rays emitted by the light source are emitted from a gap between the light source and the light guide plate is reduced, and the problem of light leakage of the conventional backlight module is effectively solved;
in addition, more light rays emitted by the light source are emitted into the light guide plate through the groove wall of the avoiding groove, so that the light energy utilization rate can be effectively improved, and the purpose of improving the brightness is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of a backlight module according to an embodiment of the present invention;
FIG. 3 is a schematic view of a light guide plate according to an embodiment of the backlight module of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
13 | |
| 10 | |
20 | |
| 11 | |
30 | |
| 111 | Dodging |
40 | |
| 112 | |
50 | |
| 1121 | First |
60 | |
| 1122 | Second |
70 | |
| 12 | |
80 | Middle frame |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a backlight module 100, which aims to solve the problem of light leakage of the backlight module 100.
The following will describe the specific structure of the backlight module 100 of the present invention, and take the backlight module 100 as an example:
referring to fig. 1 to 3, in an embodiment of the backlight module 100 of the present invention, the backlight module 100 includes a light guide plate 10, a circuit board 20 and a light source 30 (LED); the light guide plate 10 has a light incident surface 11, and the light incident surface 11 is provided with an avoiding groove 111; the circuit board 20 is disposed on the light incident surface 11 and faces the avoiding groove 111; the light source 30 is disposed on a surface of the circuit board 20 facing the avoiding groove 111 and electrically connected to the circuit board 20, and the light source 30 is accommodated in the avoiding groove 111.
It can be understood that, in the backlight module 100 of the present invention, the light incident surface 11 of the light guide plate 10 is provided with the avoiding groove 111, and the light source 30 is accommodated in the avoiding groove 111, so that more light rays emitted from the light source 30 can be emitted into the light guide plate 10 through the groove wall of the avoiding groove 111, and the possibility that the light rays emitted from the light source 30 are emitted from the gap between the light source 30 and the light guide plate 10 is reduced, thereby effectively improving the problem of light leakage of the backlight module 100 at present;
in addition, more light rays emitted from the light source 30 are emitted into the light guide plate 10 through the groove wall of the avoiding groove 111, so that the light energy utilization rate can be effectively improved, and the purpose of improving the brightness is achieved.
It should be noted that, because the conventional backlight module is prone to light leakage, a commonly used method needs to add an adhesive tape to block light to improve the light leakage phenomenon; however, the addition of the adhesive tape not only increases the number of steps for mounting the backlight module 100 to increase the material and labor costs, but also increases the overall thickness of the backlight module, thereby making it impossible to achieve an ultra-thin design.
Specifically, the light incident surface 11 is provided with a plurality of avoiding grooves 111 arranged at intervals, the light sources 30 are provided with a plurality of light sources 30, the plurality of light sources 30 are arranged at intervals along the length direction of the circuit board 20 and are all electrically connected to the circuit board 20, and each light source 30 is accommodated in one avoiding groove 111, so that more light rays emitted by each light source 30 can be emitted into the light guide plate 10 from the groove wall of the corresponding avoiding groove 111. Due to the fact that the light energy utilization rate is improved, the brightness of the backlight module 100 is improved, and therefore the using number of the light sources 30 can be reduced under the condition that the same brightness is needed, and the input of material cost is reduced.
In practical applications, the backlight module 100 of the present application may be a side-in type backlight module 100, or a direct type backlight module 100.
Referring to fig. 1 to fig. 3, in an embodiment of the backlight module 100 of the present invention, the light incident surface 11 is provided with a concave lens structure 112, and a surface of the concave lens structure 112 forms a wall of the avoiding groove 111.
It can be understood that, the concave lens structure 112 is disposed on the light incident surface 11 of the light guide plate 10, and the surface of the concave lens structure 112 forms the wall of the avoiding groove 111, so that the light emitted from the light source 30 will be incident into the light guide plate 10 through the surface of the concave lens structure 112, and the concave lens structure 112 has a diverging effect on the light, so that the light emitted from the light source 30 will be scattered after passing through the concave lens structure 112, so as to disturb the light energy distribution which is originally regularly arranged, thereby enlarging the incident light angle of the light guide plate 10, and improving the phenomena of shadows between the lamps and side dark angles.
It should be noted that, in the conventional edge-type backlight module, the light incident surface 11 of the light guide plate 10 is disposed opposite to the light source 30, and the light source 30 and the light incident surface 11 are disposed at an interval, at the interface between the air and the light guide plate 10, the incident light of the light source 30 is refracted, the refractive index of the air is set to 1, and the refractive index of the light guide plate 10 is set to n, so that the equation can be obtained: sina × sinb, where the refractive index n of the light guide plate 10 is 1.49, and the light emitting angle of the LED is about 120 °, so that the incident angle b of the critical light ray incident on the light guide plate 10 is arcsin (sina/n), and b is calculated to be about 35.5 °, that is, the incident critical light ray has an included angle of about 54.5 ° with the light incident surface 11 of the light guide plate 10, so that no light energy is introduced into two adjacent critical light ray regions to form a light energy loss region, that is, a dark image between two light sources 30 is generated; similarly, the light source 30 and the edge of the light guide plate 10 also form a light energy missing region therebetween, i.e., the edge of the light guide plate 10 generates a side dark corner, thereby causing the backlight module to have an uneven visual effect.
In the backlight module 100 of the present application, the light source 30 is accommodated in the avoiding groove 111 of the light guide plate 10, and the light source 30 and the concave lens structure 112 are arranged oppositely, so that the light emitted from the light source 30 is refracted under the action of the concave lens structure 112, and the incident light angle of the light guide plate 10 is enlarged from 120 ° to about 150 °, so as to utilize the surface curvature change of the concave lens structure 112 to press down the boundary light of the light source 30, although a light energy missing region is still formed between adjacent light sources 30, so as to generate a dark shadow phenomenon between lamps, compared with the conventional design, the area of the light energy missing region can be greatly reduced; similarly, the side dark corners and the shadows between the lamps are the same, and the arrangement of the concave lens structure 112 can also greatly reduce the light energy loss area between the light source 30 and the edge of the light guide plate 10. Therefore, the backlight module 100 of the present application can effectively improve the phenomena of dark shadows between lamps and dark corners at the side edges, so as to solve the problem of uneven visual effect of the backlight module 100.
Specifically, the concave lens structure 112 is a part of the light guide plate 10, and specifically, the avoiding groove 111 may be integrally formed at the light incident surface 11 of the light guide plate 10, that is, the concave lens structure 112 may be obtained at a groove wall of the avoiding groove 111, and the light guide plate 10 may be made of one of light transmissive materials such as organic glass (PMMA) and Polycarbonate (PC).
Referring to fig. 3, in an embodiment of the backlight module 100 of the present invention, the concave lens structure 112 includes a first concave lens 1121 and a second concave lens 1122, and the first concave lens 1121 and the second concave lens 1122 are spliced together.
It can be understood that, in the light emitted from the light source 30, the intensity of the light emitted from the middle of the light source 30 is stronger, and the intensity of the light emitted from the edge of the light source 30 is weaker, so that the first concave lens 1121 and the second concave lens 1122 which are spliced with each other are selected as the concave lens structure 112, and the middle of the light source 30 is opposite to the spliced portion of the first concave lens 1121 and the second concave lens 1122, so that a part of the light emitted from the middle of the light source 30 enters the light guide plate 10 through the first concave lens 1121, and a part of the light enters the light guide plate 10 through the second concave lens 1122, so as to expand the incident light angle of the light guide plate 10 as much as possible after the light emitted from the light source 30 passes through the first concave lens 1121 and the second concave lens 1122, thereby further improving the phenomena of dark shadows between the lamps and side dark angles.
Also, in order to ensure uniformity of light incident on the light guide plate 10, optionally, the joint of the first concave lens 1121 and the second concave lens 1122 is smoothly transited by a circular arc section.
Referring to fig. 3, in an embodiment of the backlight module 100 of the present invention, a surface of the concave lens structure 112 facing the light source 30 is smooth.
It can be understood that, by setting the surface of the concave lens structure 112 facing the light source 30 to be a smooth surface, the light emitted from the light source 30 can be smoothly guided into the light guide plate 10, and the reflection of the light by the concave lens structure 112 is reduced, so as to fully utilize the light energy, thereby improving the light energy utilization rate.
Referring to fig. 2 and fig. 3, in an embodiment of the backlight module 100 of the present invention, the light guide plate 10 further has a light emitting surface 12, and the light emitting surface 12 is adjacent to the light incident surface 11. That is, the backlight module 100 under this setting is the side income formula backlight module 100, and light source 30 goes into light through the side of light guide plate 10, and wherein, has a plurality of leaded light points in the light guide plate 10, and when light struck each leaded light point, the incident light can be toward each angle diffusion, through various density, the leaded light point of variation in size, can make light guide plate 10 evenly luminous.
Referring to fig. 1 to fig. 3, in an embodiment of the backlight module 100 of the present invention, a plurality of recessed portions 13 are disposed on a surface of the light guide plate 10 opposite to the light exit surface 12.
It can be understood that, through the surface that sets up with going out the face 12 back to the light guide plate 10 be equipped with the depressed part 13 that a plurality of intervals set up, make the inside surface that the light guide plate 10 corresponds depressed part 13 form the hemisphere cambered surface, after light penetrates into the light guide plate 10 inside, partial light will carry out the secondary scattering through the inside hemisphere cambered surface of light guide plate 10, in order to open the emergent light angle of light guide plate 10, destroy the total reflection condition and emit out by the play face 12 of light guide plate 10, thereby further promote the light energy utilization ratio, in order to reach the mesh that luminance promoted.
It should be noted that, in order to increase the brightness, the conventional edge-type backlight module needs to be configured with a film frame, or increase the driving current of the light sources 30, or set more light sources 30 to meet the brightness requirement; however, when the diaphragm structure is configured, the manufacturing cost of the backlight module is increased, the overall thickness of the backlight module is increased, and the ultra-thin design is not facilitated; and improve the driving current of light source 30 or can increase the calorific capacity of light source 30 by a wide margin when setting up more light source 30 quantity, lead to the life decline of light source 30, light guide plate 10 and other diaphragms take place thermal buckling deformation easily, thereby need be provided with heat dissipation aluminium strip on the side of light source 30 and bottom surface, with the heat of deriving light source 30 through heat dissipation aluminium strip, and the setting of heat dissipation aluminium strip can increase backlight unit's whole thickness undoubtedly, thereby equally difficult realization ultra-thin design. The backlight module 100 of the present application can effectively improve the light energy utilization rate of the light source 30 by combining the concave lens structure 112 with the arrangement of the concave portion 13, so as to achieve the purpose of brightness improvement, without configuring a diaphragm framework, or improving the driving current of the light source 30, or setting more light sources 30 to meet the brightness requirement, and canceling the design of the heat dissipation aluminum strip, thereby realizing the ultra-thin design and improving the use satisfaction of the user.
Referring to fig. 1 and fig. 2, in an embodiment of the backlight module 100 of the present invention, the circuit board 20 is abutted against the light incident surface 11.
It can be understood that, in the installation process, the circuit board 20 is abutted to the light incident surface 11, that is, the circuit board 20 can support and fix the light guide plate 10, so as to ensure the installation stability of the light guide plate 10, and at the same time, the arrangement can ensure that the light source 30 accommodated in the avoiding groove 111 keeps the installation distance from the groove wall of the avoiding groove 111.
It should be noted that, in the conventional backlight module, a cushion block needs to be disposed on the circuit board 20 and located between two adjacent light sources 30, so as to ensure a safe distance between the light sources 30 and the light guide plate 10 through the cushion block, and the cushion block plays a role in supporting and fixing the light guide plate 10; however, when the spacers are disposed between two adjacent light sources 30, the volume of the spacers cannot be designed too large, on one hand, the space between two adjacent light sources 30 is limited, and on the other hand, the entire weight of the backlight module is reduced, so that the contact area between the light guide plate 10 and the spacers is too small, and the spacers often drop, which results in low support reliability of the spacers on the light guide plate 10, and thus the installation stability of the light guide plate 10 cannot be ensured. And this application makes circuit board 20 direct and the income plain noodles 11 butt of light guide plate 10 to make circuit board 20 and the income between the plain noodles 11 form the butt of face and face, support with forming the face to light guide plate 10 through circuit board 20, thereby effectively improve the support reliability to light guide plate 10, in order to guarantee light guide plate 10's installation stability.
Referring to fig. 1, in an embodiment of the backlight module 100 of the present invention, the backlight module 100 further includes a bottom plate 40, a side plate 50 and a reflective sheet 60; the light guide plate 10 is arranged above the bottom plate 40; the side plate 50 is arranged on one side edge of the bottom plate 40 and is arranged opposite to the light incident surface 11, and the circuit board 20 is arranged on the surface of the side plate 50 facing the light incident surface 11; the reflective sheet 60 is disposed between the bottom plate 40 and the light guide plate 10.
In this embodiment, after the light emitted from the light source 30 enters the light guide plate 10, the light is scattered to each corner of the light guide plate 10, and the light passing through the bottom of the light guide plate 10 is reflected back to the light guide plate 10 by the reflection sheet 60, and finally the light is emitted from the light emitting surface 12 of the light guide plate 10.
Specifically, the bottom plate 40 and the side plates 50 form a back plate of the backlight module 100, so that the back plate can improve the installation stability of the structures such as the light guide plate 10, the circuit board 20, the light source 30, and the reflective sheet 60.
Referring to fig. 1, in an embodiment of the backlight module 100 of the present invention, the backlight module 100 further includes an optical film 70 and a display panel; the optical film 70 is disposed on the light emitting surface 12.
In this embodiment, the light emitted from the light emitting surface 12 of the light guide plate 10 is processed by the optical film 70 and then emitted from the display panel of the display device, so that the display panel presents a corresponding image.
Specifically, when the backlight module 100 is applied to a display device, the display panel is disposed on a surface of the optical film 70 facing away from the light guide plate 10. The backlight module 100 further includes a middle frame 80, the middle frame 80 is sleeved outside the side plate 50 mentioned in the above embodiments, and at least a portion of the middle frame 80 extends between the display panel and the optical film 70, so as to support and fix the display panel through the middle frame 80, thereby ensuring the installation stability of the display panel; in addition, in order to improve the connection strength between the display panel and the middle frame 80 and ensure the installation stability of the display panel, optionally, a glass adhesive tape is arranged between the middle frame 80 and the display panel, and the arrangement of the glass adhesive tape can not only improve the connection strength between the display panel and the middle frame 80, but also play a certain role in buffering the display panel so as to avoid the damage to the display panel caused by collision between the middle frame 80 and the display panel during transportation or use; similarly, in order to improve the connection strength between the optical film 70 and the middle frame 80 to ensure the installation stability of the optical film 70, optionally, a foam adhesive tape is disposed between the middle frame 80 and the optical film 70, and the foam adhesive tape also has a function of connecting the optical film 70 and the middle frame 80 and has a certain buffering effect on the optical film 70.
The invention further provides a display device, which includes the backlight module 100 as described above, and the specific structure of the backlight module 100 is detailed in the foregoing embodiments. Since the display device adopts all the technical solutions of the foregoing embodiments, at least all the beneficial effects brought by all the technical solutions of the foregoing embodiments are achieved, and no further description is given here.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A backlight module, comprising:
the light guide plate is provided with a light incident surface, and the light incident surface is provided with an avoiding groove;
the circuit board is arranged on the light incoming surface and faces the avoidance groove; and
the light source is arranged on the surface of the circuit board facing the avoidance groove and is electrically connected to the circuit board, and the light source is contained in the avoidance groove.
2. The backlight module as claimed in claim 1, wherein the light incident surface is provided with a concave lens structure, and a surface of the concave lens structure forms a wall of the avoiding groove.
3. The backlight module of claim 2, wherein the concave lens structure comprises a first concave lens and a second concave lens, and the first concave lens and the second concave lens are spliced with each other.
4. The backlight module of claim 2, wherein a surface of the concave lens structure facing the light source is smooth.
5. The backlight module as claimed in claim 1, wherein the light guide plate further has a light-emitting surface, and the light-emitting surface is disposed adjacent to the light-incident surface.
6. The backlight module as claimed in claim 5, wherein the surface of the light guide plate opposite to the light-emitting surface is provided with a plurality of spaced recesses.
7. The backlight module according to any one of claims 1 to 6, wherein the circuit board abuts against the light incident surface.
8. The backlight module according to any one of claims 1 to 6, wherein the backlight module further comprises:
the light guide plate is arranged above the bottom plate;
the side plate is arranged on one side edge of the bottom plate and is opposite to the light incident surface, and the circuit board is arranged on the surface of the side plate facing the light incident surface; and
and the reflector plate is arranged between the bottom plate and the light guide plate.
9. The backlight module according to any one of claims 1 to 6, wherein the backlight module further comprises:
the optical diaphragm is arranged on the light emitting surface.
10. A display device comprising the backlight module according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288247.8A CN112965296A (en) | 2021-03-17 | 2021-03-17 | Backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288247.8A CN112965296A (en) | 2021-03-17 | 2021-03-17 | Backlight module and display device |
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| CN112965296A true CN112965296A (en) | 2021-06-15 |
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| CN202110288247.8A Pending CN112965296A (en) | 2021-03-17 | 2021-03-17 | Backlight module and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023130513A1 (en) * | 2022-01-10 | 2023-07-13 | 武汉华星光电技术有限公司 | Backlight module and display panel |
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