CN114660851A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN114660851A CN114660851A CN202210381063.0A CN202210381063A CN114660851A CN 114660851 A CN114660851 A CN 114660851A CN 202210381063 A CN202210381063 A CN 202210381063A CN 114660851 A CN114660851 A CN 114660851A
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- plate
- heat dissipation
- backlight module
- lamp panel
- lamp
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 106
- 230000000712 assembly Effects 0.000 claims abstract description 23
- 238000000429 assembly Methods 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 22
- 238000013021 overheating Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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Classifications
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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
- G02F1/133628—Illuminating devices with cooling means
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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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
Abstract
The invention provides a backlight module and a display device, wherein the backlight module comprises a lamp panel, a lamp source and a heat dissipation structure, the heat dissipation structure comprises a plurality of heat dissipation assemblies extending along a first direction, each heat dissipation assembly comprises a contact part and a connecting part, the contact part is attached to the surface of one side, away from the lamp source, of the lamp panel, and the orthographic projection of at least one lamp source on the heat dissipation structure is positioned in the attachment surface of the contact part and the lamp panel; the connecting parts are arranged on different surfaces of the contact parts and are used for connecting adjacent radiating assemblies; according to the backlight module, the contact part of the heat dissipation assembly is attached to the surface of one side, away from the lamp source, of the lamp panel, the orthographic projection of at least one lamp source on the heat dissipation structure is arranged in the attachment surface of the contact part and the lamp panel, so that heat generated by the lamp source can be conducted to the heat dissipation structure through the shortest path, the thermal resistance is reduced, the temperature of the lamp panel is reduced, the heat dissipation efficiency of the backlight module is improved, the influence of local overheating on the display effect is avoided, and the reliability of a product is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module and a display device.
Background
A Liquid Crystal Display (LCD) needs a backlight module to provide a Light source, which is usually a Light Emitting Diode (LED). The direct type backlight adopting the Local dimming technology can significantly improve the contrast and improve the display effect, and is currently applied to products. Because the quantity of local light modulation district is more, the display effect is better, and correspondingly, the quantity of LED also can be more, but this can lead to backlight unit's high temperature, influences display effect and reliability. Therefore, there is a need to solve the heat dissipation problem of such backlights.
The prior art is through setting up the backplate between lamp plate and fin, through designing the backplate into the dysmorphism structure that has a plurality of cushion chambers, will not in time conduct a large amount of heats of going out at first release the cushion chamber and alleviate to avoid local overheat to cause unusually. However, the buffer cavities are of a closed structure, air cannot circulate, only air can be used for heat conduction, but the efficiency of the air heat conduction is very low, so that the buffer cavities play a role in heat preservation (similar to down jackets), and the actual heat dissipation area finally conducted to the outer side is a heat dissipation fin, that is, the final heat dissipation area is not increased, and the heat dissipation effect is not improved; in addition, prior art's LED is located the top of cushion chamber, and the heat that its produced is partly conducted heat conduction by the lamp plate, and the heat needs pass to cushion chamber wall along the lamp plate plane again, has increased the temperature of lamp plate, and heat conduction efficiency is low. Therefore, it is necessary to improve this defect.
Disclosure of Invention
The embodiment of the invention provides a backlight module, which is used for solving the technical problems that the temperature of a lamp panel is increased and the heat conduction efficiency is low due to the fact that the backlight module in the prior art conducts heat through air heat and the lamp panel conducts heat for heat dissipation.
The embodiment of the invention provides a backlight module, which comprises a lamp panel, a lamp source and a heat dissipation structure; the lamp source is positioned on the lamp panel; the heat dissipation structure is positioned on one side of the lamp panel, which is far away from the lamp source; the heat dissipation structure comprises a plurality of heat dissipation assemblies extending along a first direction, each heat dissipation assembly comprises a contact part and a connecting part, the contact parts are attached to the surface of one side, away from the light source, of the lamp panel, and the orthographic projection of at least one light source on the heat dissipation structure is located in the attaching surface of the contact parts and the lamp panel; the connecting part and the contact part are arranged in a different surface mode, and the connecting part is used for connecting the adjacent heat dissipation assemblies.
In the backlight module provided by the embodiment of the invention, the connecting part is provided with a plurality of first through holes, and the first through holes extend along the thickness direction of the connecting part; and/or a plurality of second through holes are arranged on the contact part, and the second through holes extend along the thickness direction of the contact part.
In the backlight module provided by the embodiment of the invention, when the contact part is provided with the plurality of second through holes, one end of each second through hole, which is adjacent to the lamp panel, is closed, and one end of each second through hole, which is far away from the lamp panel, is communicated with the outside.
In the backlight module provided by the embodiment of the invention, the contact part comprises a first plate, and the connecting part comprises a first connecting plate, a second plate and a second connecting plate; one end of the first connecting plate is connected with the first plate; the second plate is connected with the other end of the first connecting plate, and the second plate is arranged in parallel with the first plate; one end of the second connecting plate is connected with the second plate, and the other end of the second connecting plate is connected with the first plate of the adjacent heat dissipation assembly.
In the backlight module provided by the embodiment of the invention, the connecting part is provided with a plurality of first through holes, and the first through holes extend along the thickness direction of the connecting part; wherein the distribution density of the first through holes on the second plate is less than the distribution density of the first through holes on the first connection plate and/or the second connection plate.
In the backlight module provided by the embodiment of the invention, a first included angle is formed between the first connecting plate and the second plate, a second included angle is formed between the second connecting plate and the second plate, and the angle value of the first included angle is equal to that of the second included angle.
In the backlight module provided by the embodiment of the invention, the contact part comprises a first plate, and the connecting part comprises a first connecting plate and a second connecting plate; one end of the first connecting plate is connected with the first plate; one end of the second connecting plate is connected with the first connecting plate, and the other end of the second connecting plate is connected with the first plate of the adjacent heat dissipation assembly.
In the backlight module provided by the embodiment of the invention, the first connecting plate and the second connecting plate are symmetrically arranged about a boundary line between the first connecting plate and the second connecting plate.
In the backlight module provided by the embodiment of the invention, the backlight module comprises a plurality of heat dissipation structures arranged along the light-emitting side direction of the backlight module.
The embodiment of the invention also provides a display device which comprises an optical switch panel and the backlight module, wherein the optical switch panel is positioned at the light emergent side of the backlight module.
Has the advantages that: the embodiment of the invention provides a backlight module, which comprises a lamp panel, a lamp source and a heat dissipation structure; the lamp source is positioned on the lamp panel; the heat dissipation structure is positioned on one side of the lamp panel away from the lamp source; the lamp panel comprises a lamp panel body, a lamp source, a radiating structure and a lamp panel, wherein the radiating structure comprises a plurality of radiating assemblies extending along a first direction, each radiating assembly comprises a contact part and a connecting part, the contact parts are attached to the surface of one side, away from the lamp source, of the lamp panel body, and the orthographic projection of at least one lamp source on the radiating structure is located in the attaching surface of the contact parts and the lamp panel body; the connecting parts are arranged on different surfaces of the contact parts and are used for connecting adjacent radiating assemblies; according to the backlight module, the contact part of the heat dissipation assembly is attached to the surface of one side, away from the lamp source, of the lamp panel, the orthographic projection of at least one lamp source on the heat dissipation structure is arranged in the attachment surface of the contact part and the lamp panel, so that heat generated by the lamp source can be conducted to the heat dissipation structure through the shortest path, the thermal resistance is reduced, the temperature of the lamp panel is reduced, the heat dissipation efficiency of the backlight module is improved, the influence of local overheating on the display effect is avoided, and the reliability of a product is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is a cross-sectional view of a backlight module according to an embodiment of the invention.
Fig. 2 is a perspective view of another backlight module according to an embodiment of the invention.
Fig. 3 is a schematic diagram of a basic structure of a heat dissipation structure according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a basic structure of another heat dissipation structure according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a basic structure of another heat dissipation structure according to an embodiment of the present invention.
Fig. 6 is a cross-sectional view of another backlight module according to an embodiment of the invention.
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. In the drawings, the size and thickness of components illustrated in the drawings are not to scale for clarity and ease of understanding and description.
As shown in fig. 1, which is a cross-sectional view of a backlight module provided in an embodiment of the present invention, the backlight module includes a lamp panel 10, a lamp source 20, and a heat dissipation structure 30; the light source 20 is located on the lamp panel 10; the heat dissipation structure 30 is located on one side of the lamp panel 10 away from the light source 20; the heat dissipation structure 30 includes a plurality of heat dissipation assemblies 31 extending along a first direction, each heat dissipation assembly 31 includes a contact portion 311 and a connection portion 312, the contact portion 311 is attached to a side surface of the lamp panel 10 away from the light source 20, and an orthographic projection of at least one light source 20 on the heat dissipation structure 30 is located in an attachment surface of the contact portion 311 and the lamp panel 10; the connecting portion 312 is disposed opposite to the contact portion 311, and the connecting portion 312 is used for connecting the adjacent heat dissipation assemblies 31.
It can be appreciated that the prior art alleviates the problem of local overheating by first releasing a large amount of heat into the buffer chamber that cannot be conducted away in time. However, the buffer cavity is of a closed structure, air cannot circulate, and only air heat conduction can be utilized, but the efficiency of the air heat conduction is very low; in addition, prior art's LED is located the top of cushion chamber, and the heat that its produced is partly conducted heat conduction by the lamp plate, and the heat needs pass to cushion chamber wall along the lamp plate plane again, has increased the temperature of lamp plate, and heat conduction efficiency is low. According to the invention, the contact part 311 of the heat dissipation assembly 31 is attached to the surface of one side of the lamp panel 10, which is far away from the lamp source 20, and the orthographic projection of at least one lamp source 20 on the heat dissipation structure 30 is arranged in the attachment surface of the contact part 311 and the lamp panel 10, so that heat generated by the lamp source 20 can be directly conducted to the contact part 311 of the heat dissipation structure 30 through the lamp panel 10, namely, the heat can be rapidly conducted to the heat dissipation structure 30 through the shortest path, the thermal resistance is reduced, the temperature of the lamp panel 10 is reduced, namely, the heat dissipation efficiency of the backlight module is improved, the influence of local overheating on the display effect is avoided, and the product reliability is improved.
It should be noted that the backlight module provided in the embodiment of the present invention is a direct-type LED backlight module, where the backlight module includes a plurality of light modulation regions, each of the light modulation regions is provided with at least one light source 20, and the light sources 20 in the light modulation regions are independently controlled, so as to improve the display effect.
It should be noted that the first direction may be any direction, such as leftward or rightward, fig. 1 only illustrates the first direction as rightward, and the plurality of heat dissipation assemblies 31 extend in the rightward direction. It can be understood that, since the connection portion 312 and the contact portion 311 are disposed in different planes, the plurality of heat dissipation assemblies 31 of the heat dissipation structure 30 have a bending structure along the first direction, so that the backlight module is easily bent in another direction (different from the first direction), that is, the backlight module provided by the embodiment of the present invention can also be applied to backlight of a curved display product.
The term "the connection portion 312 is used to connect the adjacent heat dissipating modules 31" means that the connection portion 312 may be connected to the connection portion of the adjacent heat dissipating module 31, or may be directly connected to the contact portion 311 of the adjacent heat dissipating module 31.
Next, please refer to fig. 2, which is a perspective view of another backlight module according to an embodiment of the present invention, where the backlight module includes a lamp panel 10, a lamp source 20, and a heat dissipation structure 30; the light source 20 is located on the lamp panel 10; the heat dissipation structure 30 is located on one side of the lamp panel 10 away from the light source 20; the heat dissipation structure 30 includes a plurality of heat dissipation assemblies 31 extending along a first direction, each heat dissipation assembly 31 includes a contact portion 311 and a connection portion 312, the contact portion 311 is attached to a side surface of the lamp panel 10 away from the lamp source 20, and an orthographic projection of at least one lamp source 20 on the heat dissipation structure 30 is located in an attachment plane between the contact portion 311 and the lamp panel 10; the connecting portion 312 is disposed opposite to the contact portion 311, and the connecting portion 312 is used for connecting the adjacent heat dissipation assemblies 31. In the present embodiment, the connecting portion 312 is provided with a plurality of first through holes 40, and the first through holes 40 extend in the thickness direction of the connecting portion 312; and/or a plurality of second through holes 50 (as shown in fig. 4 or fig. 5) are provided on the contact portion 311, and the second through holes 50 extend in the thickness direction of the contact portion 311.
It can be understood that this embodiment is through setting up a plurality of first through-holes 40 and/or set up a plurality of second through-holes 50 on contact part 311 on connecting portion 312 (the face that does not contact with lamp plate 10 promptly) to can strengthen the heat convection, strengthen the radiating effect, improve backlight unit's radiating efficiency, reduce lamp plate 10 temperature, avoid local overheat to cause the influence to the display effect, promoted product reliability.
Specifically, the present embodiment includes three implementation manners, a first implementation manner is shown in fig. 3 and is a basic structural schematic diagram of the heat dissipation structure provided in the embodiment of the present invention, and the implementation manner in fig. 3 is to provide a plurality of first through holes 40 only on the connection portion 312. Wherein, the contact portion 311 of the heat dissipation structure 30 is attached to a side surface of the lamp panel 10 (as shown in fig. 1) away from the light source 20 (as shown in fig. 1), so that no through hole needs to be formed in the contact portion 311, the connection portion 312 of the heat dissipation structure 30 does not contact with the lamp panel 10, and the connection portion 312 is provided with a plurality of first through holes 40, thereby increasing heat convection and improving the heat dissipation effect. In addition, in the plane perpendicular to the light-emitting side of the backlight module, along the direction perpendicular to the first direction, the cavity formed between the contact portion 311 and the connecting portions 312 on both sides thereof has a through channel, so that a chimney effect type (i.e., hot air flows upward, and cold air enters from the bottom) strong convection can be formed, and the heat dissipation effect is greatly improved. The heat dissipation structure 30 provided by the embodiment of the invention can be processed by stamping, and is convenient to process and low in cost.
Second, as shown in fig. 4, which is a schematic view of a basic structure of another heat dissipation structure according to an embodiment of the present invention, in the embodiment of fig. 4, a plurality of second through holes 50 are only disposed on the contact portion 311. Wherein, the second through hole 50 is close to one end of the lamp panel 10 (as in fig. 1) and is closed, and one end of the second through hole 50 far away from the lamp panel 10 is communicated with the outside. Specifically, because contact portion 311 and lamp plate 10 keep away from the laminating of a side surface of lamp source 20 (as in fig. 1), consequently, the one end that second through-hole 50 on the contact portion 311 is close to lamp plate 10 is sealed by lamp plate 10, and the heat that lamp source 20 produced can directly conduct the outside from second through-hole 50 through lamp plate 10 and dispel the heat, and the heat dissipation route is short, has improved backlight unit's radiating effect.
Third, as shown in fig. 5, which is a schematic diagram of a basic structure of another heat dissipation structure provided in the embodiment of the present invention, in the implementation of fig. 5, both the first through holes 40 are disposed on the connection portion 312, and the second through holes 50 are disposed on the contact portion 311. The heat generated by the lamp source 20 (as shown in fig. 1) can be conducted to the outside through the second through hole 50 on the contact portion 311, and can also form heat convection through the first through hole 40 on the connection portion 312, so that the heat dissipation is accelerated, and the heat dissipation efficiency is high.
In one embodiment, the first plurality of through holes 40 and the second plurality of through holes 50 are evenly distributed. It can be understood that, in the present embodiment, the plurality of first through holes 40 and the plurality of second through holes 50 are uniformly distributed, so that heat in the plurality of heat dissipation assemblies 31 can be uniformly dispersed, thereby avoiding the influence of local overheating on the display effect and improving the reliability of the product.
With continued reference to fig. 1, in one embodiment, the contact portion 311 includes a first plate, and the connection portion 312 includes a first connection plate 3121, a second plate 3122, and a second connection plate 3123; one end of the first connecting plate 3121 is connected to the first plate; the second plate 3122 is connected to the other end of the first connection plate 3121, and the second plate 3122 is disposed in parallel with the first plate; one end of the second connection plate 3123 is connected to the second plate 3122, and the other end of the second connection plate 3123 is connected to the first plate of an adjacent one of the heat dissipation assemblies 31.
It can be understood that, in the present embodiment, the connection portion 312 is divided into the first connection plate 3121, the second plate 3122 and the second connection plate 3123, and the second plate 3122 is disposed in parallel with the first plate, so that the first plate and the left and right adjacent first connection plates 3121 and second connection plates 3123 respectively constitute a first cavity, the second plate 3122 and the left and right adjacent first connection plates 3121 and second connection plates 3123 respectively constitute a second cavity, and the first cavity and the second cavity are symmetrically disposed, so that the heat dissipation structure 30 is more stable and is not easily deformed.
In one embodiment, the connecting portion 312 is provided with a plurality of first through holes 40, and the first through holes 40 extend along the thickness direction of the connecting portion 312; wherein the distribution density of the first through holes 40 on the second plate 3122 is less than the distribution density of the first through holes 40 on the first connection plate 3121 and/or the second connection plate 3123.
It is understood that heat convection is enhanced between two adjacent heat dissipation assemblies 31 through the first through holes 40 of the first connection plate 3121 and the second connection plate 3123, and the present embodiment can further enhance the heat dissipation effect by arranging the first through holes 40 of the first connection plate 3121 and/or the second connection plate 3123 more densely.
In one embodiment, a first angle a is formed between the first connecting plate 3121 and the second plate 3122, a second angle b is formed between the second connecting plate 3123 and the second plate 3122, and an angle value of the first angle a is equal to an angle value of the second angle b.
It can be understood that the present embodiment improves the heat dissipation effect of the backlight module by setting the angle between the first connection plate 3121 and the second plate 3122 to be equal to the angle between the second connection plate 3123 and the second plate 3122 such that the first connection plate 3121 and the second connection plate 3123 are symmetrically disposed with respect to the second plate 3122, and the heat conducted from the lamp source 20 to the contact portion 311 can be uniformly conducted to the first connection plate 3121 and the second connection plate 3123.
Next, please refer to fig. 6, which is a cross-sectional view of another backlight module according to an embodiment of the present invention, the backlight module includes a lamp panel 10, a lamp source 20, and a heat dissipation structure 30; the light source 20 is located on the lamp panel 10; the heat dissipation structure 30 is located on one side of the lamp panel 10 away from the light source 20; the heat dissipation structure 30 includes a plurality of heat dissipation assemblies 31 extending along a first direction, each heat dissipation assembly 31 includes a contact portion 311 and a connection portion 312, the contact portion 311 is attached to a side surface of the lamp panel 10 away from the lamp source 20, and an orthographic projection of at least one lamp source 20 on the heat dissipation structure 30 is located in an attachment plane between the contact portion 311 and the lamp panel 10; the connecting portion 312 is disposed opposite to the contact portion 311, and the connecting portion 312 is used for connecting the adjacent heat dissipation assemblies 31.
In this embodiment, the contact portion 311 includes a first plate, and the connection portion 312 includes a first connection plate 3121 and a second connection plate 3123; one end of the first connecting plate 3121 is connected to the first plate; one end of the second connection plate 3123 is connected to the first connection plate 3121, and the other end of the second connection plate 3123 is connected to the first plate of an adjacent one of the heat dissipation assemblies 31.
It is understood that, in the present embodiment, by dividing the connection portion 312 into the first connection plate 3121 and the second connection plate 3123, the second plate 3122 (see fig. 1 to 5) is omitted as compared with the embodiment of fig. 1 to 5, and thus, the interval between the plurality of light sources 20 may be reduced, the distribution density of the light sources 20 may be increased, and the display effect may be improved.
It should be noted that, this embodiment also can set up a plurality of through-holes (not shown in the figure) on connecting portion 312 (first connecting plate 3121 and second connecting plate 3123 promptly) to strengthen the heat convection, strengthen the radiating effect, improve backlight unit's radiating efficiency, reduce lamp plate 10 temperature, avoid local overheat to cause the influence to the display effect, promoted product reliability.
In one embodiment, the first connection plate 3121 and the second connection plate 3123 are symmetrically disposed about an intersection line c between the first connection plate 3121 and the second connection plate 3123.
It can be understood that, in the present embodiment, by disposing the first connection plate 3121 and the second connection plate 3123 to be symmetrical with respect to the boundary line c between the first connection plate 3121 and the second connection plate 3123, the heat conducted from the lamp source 20 to the contact portion 311 can be uniformly conducted to the first connection plate 3121 and the second connection plate 3123, thereby improving the heat dissipation effect of the backlight module.
In one embodiment, the backlight module includes a plurality of heat dissipation structures (not shown) arranged along a light-emitting side direction of the backlight module. It is understood that the heat dissipation structure may be multi-layered. That is, the lamp panel is away from the heat dissipation structure of the lamp source, and a plurality of heat dissipation structures arranged in a stacked manner are arranged on one side of the lamp panel, wherein the heat dissipation assemblies in two adjacent heat dissipation structures can extend towards different directions, for example, the heat dissipation assembly in the heat dissipation structure of the first layer extends towards the first direction, and the heat dissipation assembly in the heat dissipation structure of the second layer extends towards the direction perpendicular to the first direction.
An embodiment of the present invention further provides a display device, including an optical switch panel and the backlight module, where the optical switch panel is located on a light emitting side of the backlight module, and the structure of the backlight module is please refer to fig. 1 to 6 and related descriptions, which are not repeated herein. The display device provided by the embodiment of the invention can be as follows: products or components with display functions such as mobile phones, tablet computers, notebook computers, televisions, digital cameras, navigators and the like.
In summary, the backlight module provided in the embodiments of the present invention includes a lamp panel, a lamp source, and a heat dissipation structure; the lamp source is positioned on the lamp panel; the heat dissipation structure is positioned on one side of the lamp panel away from the lamp source; the lamp panel comprises a lamp panel body, a lamp source, a radiating structure and a lamp panel, wherein the radiating structure comprises a plurality of radiating assemblies extending along a first direction, each radiating assembly comprises a contact part and a connecting part, the contact parts are attached to the surface of one side, away from the lamp source, of the lamp panel body, and the orthographic projection of at least one lamp source on the radiating structure is located in the attaching surface of the contact parts and the lamp panel body; the connecting parts are arranged on different surfaces of the contact parts and are used for connecting adjacent radiating assemblies; according to the backlight module, the contact part of the heat dissipation assembly is attached to the surface of one side, away from the lamp source, of the lamp panel, the orthographic projection of at least one lamp source on the heat dissipation structure is arranged in the attachment surface of the contact part and the lamp panel, so that heat generated by the lamp source can be conducted to the heat dissipation structure through the shortest path, the thermal resistance is reduced, the temperature of the lamp panel is reduced, the heat dissipation efficiency of the backlight module is improved, the influence of local overheating on the display effect is avoided, the product reliability is improved, the technical problems that the temperature of the lamp panel is increased and the heat conduction efficiency is low due to the fact that the backlight module in the prior art conducts heat through air heat and the lamp panel are solved.
The backlight module and the display device provided by the embodiment of the invention are described in detail above. It should be understood that the exemplary embodiments described herein should be considered merely illustrative for facilitating understanding of the method of the present invention and its core ideas, and not restrictive.
Claims (10)
1. A backlight module, comprising:
a lamp panel;
the lamp source is positioned on the lamp panel;
the heat dissipation structure is positioned on one side of the lamp panel, which is far away from the lamp source;
the heat dissipation structure comprises a plurality of heat dissipation assemblies extending along a first direction, each heat dissipation assembly comprises a contact part and a connecting part, the contact parts are attached to the surface of one side, away from the light source, of the lamp panel, and the orthographic projection of at least one light source on the heat dissipation structure is located in the attaching surface of the contact parts and the lamp panel; the connecting part and the contact part are arranged in a different surface mode, and the connecting part is used for connecting the adjacent heat dissipation assemblies.
2. The backlight module according to claim 1, wherein the connecting portion has a plurality of first through holes extending in a thickness direction of the connecting portion; and/or
The contact part is provided with a plurality of second through holes, and the second through holes extend along the thickness direction of the contact part.
3. The backlight module according to claim 2, wherein when the contact portion is provided with a plurality of second through holes, one end of the second through hole adjacent to the lamp panel is closed, and one end of the second through hole far away from the lamp panel is communicated with the outside.
4. The backlight module according to claim 1, wherein the contact portion comprises a first plate, and the connection portion comprises:
one end of the first connecting plate is connected with the first plate;
the second plate is connected with the other end of the first connecting plate, and the second plate is arranged in parallel with the first plate;
and one end of the second connecting plate is connected with the second plate, and the other end of the second connecting plate is connected with the first plate of the adjacent heat dissipation assembly.
5. The backlight module according to claim 4, wherein the connecting portion has a plurality of first through holes extending in a thickness direction of the connecting portion;
wherein the distribution density of the first through holes on the second plate is less than the distribution density of the first through holes on the first connection plate and/or the second connection plate.
6. The backlight module as claimed in claim 4, wherein the first connecting plate forms a first angle with the second plate, the second connecting plate forms a second angle with the second plate, and the angle of the first angle is equal to the angle of the second angle.
7. The backlight module according to claim 1, wherein the contact portion comprises a first plate, and the connection portion comprises:
one end of the first connecting plate is connected with the first plate;
and one end of the second connecting plate is connected with the first connecting plate, and the other end of the second connecting plate is connected with the first plate of the adjacent heat radiating assembly.
8. The backlight module according to claim 7, wherein the first connecting plate and the second connecting plate are symmetrically disposed about an intersection line between the first connecting plate and the second connecting plate.
9. The backlight module as claimed in claim 1, wherein the backlight module comprises a plurality of heat dissipation structures arranged along a light-emitting side direction of the backlight module.
10. A display device comprising an optical switch panel and a backlight module as claimed in any one of claims 1 to 9, wherein the optical switch panel is located at a light-emitting side of the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210381063.0A CN114660851B (en) | 2022-04-12 | 2022-04-12 | Backlight module and display device |
Applications Claiming Priority (1)
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| CN114660851B (en) | 2024-02-09 |
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