CN115209705A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN115209705A CN115209705A CN202210900779.7A CN202210900779A CN115209705A CN 115209705 A CN115209705 A CN 115209705A CN 202210900779 A CN202210900779 A CN 202210900779A CN 115209705 A CN115209705 A CN 115209705A
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- 239000002826 coolant Substances 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 238000007654 immersion Methods 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims abstract description 23
- 230000008093 supporting effect Effects 0.000 claims description 21
- 239000002390 adhesive tape Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 16
- 230000000630 rising effect Effects 0.000 abstract description 3
- 239000011324 bead Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 239000012788 optical film Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
- H05K7/20981—Liquid coolant without phase change
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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
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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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Theoretical Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The application discloses a backlight module and a display device, wherein the backlight module comprises a box body, a splicing support, a heat dissipation assembly and a plurality of lamp panels, the splicing support is fixed on the box body, the plurality of lamp panels and installation positions on the splicing support are fixedly arranged in a one-to-one correspondence manner, the bottoms of the lamp panels are leaked from a hollow area of the installation positions, and a closed immersion cavity is formed among the bottoms of the plurality of lamp panels, the bottoms of the splicing support and the box body; the heat dissipation assembly comprises an input pipe, an output pipe, a cooling unit, a pump and a cooling medium, the immersion cavity is filled with the cooling medium, the input pipe and the output pipe are communicated with the immersion cavity, and the output pipe, the cooling unit, the pump and the input pipe are sequentially connected. This application adopts immersive cooling design, can directly absorb the heat on the lamp plate, has directly avoided thermal rising on the lamp plate for backlight unit possesses very good radiating effect, has guaranteed backlight unit's life.
Description
Technical Field
The application relates to the technical field of display, in particular to a backlight module and a display device.
Background
The large screen display screen adopts the splicing lamp panel technology, and because each lamp panel is provided with a plurality of LED lamp beads, the large screen display screen is easy to generate higher heat. Especially, large commercial LED display device or even Mini LED display device needs to have higher brightness, but the high brightness is accompanied with the high temperature problem, so that the service life of LED lamp beads can be greatly shortened when the Mini LED display device continuously works in a high-temperature environment, and the Mini LED display device is required to have good heat dissipation performance.
The relatively commonly used heat dissipation mode in the display device is to add the air cooling system at present, but the air cooling system energy consumption is high, the noise is big when the heat dissipation, and the radiating effect is also relatively poor, influences user experience.
Disclosure of Invention
The application aims at providing a backlight module and a display device which are low in energy consumption, low in noise and good in heat dissipation effect when heat is dissipated.
The application discloses a backlight module, which comprises a box body, a splicing support, a heat dissipation assembly and a plurality of lamp panels, wherein the splicing support is fixed on the box body, and a plurality of hollowed-out installation positions are arranged on the splicing support; the lamp panels and the installation positions are fixedly arranged in a one-to-one correspondence mode, the bottoms of the lamp panels are leaked from the hollow areas of the installation positions, and closed immersion cavities are formed among the bottoms of the lamp panels, the bottoms of the splicing supports and the box body; the heat dissipation assembly comprises an input pipe, an output pipe, a cooling unit, a pump and a cooling medium, wherein the cooling medium is filled in the immersion cavity, the input pipe and the output pipe are respectively arranged on the box body and are communicated with the immersion cavity, the output pipe, the cooling unit, the pump and the input pipe are sequentially connected, and the cooling unit cools the cooling medium flowing out of the output pipe; the pump control cooling medium in the cavity of immersing flows from the delivery pipe, through after the cooling unit cools, flows back to from the delivery pipe in the cavity of immersing.
Optionally, the mounting position is of an annular structure, the cross section of the mounting position is stepped, the bottom of the edge of the lamp panel is higher than the bottom of the central area of the edge, the bottom of the edge of the lamp panel is attached to the stepped surface of the mounting position, and the bottom of the central area of the edge is flush with the bottom of the lamp panel support; the lamp plate with the installation position is fixed through waterproof sticky tape bonding.
Optionally, the box body includes a bottom plate, a first side plate, a supporting plate and a second side plate, and the bottom plate is located at the bottom of the lamp panel and is arranged opposite to the lamp panel; the first side plate is vertically connected with the edge of the bottom plate, arranged around the bottom plate and extends towards the lamp panel; the supporting plate is of an annular or square structure, is connected with one end, far away from the bottom plate, of the first side plate, is arranged in parallel with the bottom plate, and extends in the direction far away from the bottom plate; the edge of the splicing support is fixedly bonded with the support plate through a waterproof adhesive tape; the second side plate is of an annular or square structure, is connected with one end, far away from the first side plate, of the support plate, is perpendicular to the first side plate, and extends towards the direction far away from the bottom plate; the bottom plate the first curb plate the bottom and a plurality of concatenation support the bottom of lamp plate forms inclosed cavity of immersing.
Optionally, the bottom of the splicing support is provided with a plurality of supporting columns, threaded holes are formed in the supporting columns, the bottom plate is provided with a plurality of through holes in one-to-one correspondence with the threaded holes, the supporting columns are abutted to the bottom plate, and the bottom plate is fixed to the supporting columns through the cooperation of screws, the through holes and the threaded holes.
Optionally, the supporting column is disposed corresponding to a vertex angle of each of the mounting positions, and disposed corresponding to a middle position of each side of each of the mounting positions.
Optionally, a wiring channel extending towards the direction of the base plate is arranged at the bottom of each lamp panel, and the wiring channel is hollow and is integrally formed with the lamp panel; a plurality of wiring holes are formed in the bottom plate, the wiring holes are matched with the wiring channels in a one-to-one correspondence mode, and the joint of the wiring holes and the wiring channels is sealed through a waterproof gasket; the intercommunication lamp pearl on the lamp plate walk the line pass through walk the line passageway with it extends to walk the line hole keep away from in the bottom plate one side of lamp plate.
Optionally, when the backlight module is used, the input tube is located at the bottom of the box body, and the output tube is located at the top of the box body.
Optionally, the input pipe and the output pipe are respectively located at two opposite corners of the box body.
Optionally, the bottom of the lamp panel is coated with a waterproof coating.
The application also discloses a display device, display device includes display panel and as above backlight unit, display panel fixes on backlight unit, backlight unit does display panel provides backlight.
Compared with the scheme that an air cooling system is additionally arranged in the display equipment, the scheme that the air cooling system is used for cooling the lamp panel and the lamp beads is adopted; the backlight module is additionally provided with the heat dissipation assembly, the lamp panel and the lamp beads are dissipated heat through the cooling medium, only a small amount of electric quantity is needed to control the pump to operate, and the cooling medium does not need to flow rapidly, so that the electric quantity of the heat dissipation assembly during operation is greatly saved; and compare the sound that causes when the fan moves in air cooling system, radiator unit is when moving, and the flow of coolant and the sound that the pump caused at the during operation are all less, consequently adopt the heat dissipation design in this application to be favorable to reducing the energy consumption, reduce the noise.
In addition, this application adopts immersive cooling design, cool off the heat dissipation with the direct submergence of the bottom of lamp plate in coolant, for the water-cooling design that sets up the water pipe at backlight unit's back, and carry out the opening and combine the forced air cooling design of fan at backlight unit's back, radiating component can directly absorb the heat on the lamp plate in this application, do not receive the influence of intermediate structure or intermediate medium, thermal rising on the lamp plate has directly been avoided, make backlight unit possess very good radiating effect, backlight unit's life has been guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic block diagram of a backlight module provided in an embodiment of the present application;
fig. 2 is a schematic cross-sectional view of a first portion of a backlight module according to an embodiment of the present disclosure;
fig. 3 is a schematic cross-sectional view of a second portion of a backlight module according to an embodiment of the present disclosure;
fig. 4 is a schematic cross-sectional view of a third portion of a backlight module according to an embodiment of the present disclosure;
FIG. 5 is a partial schematic view of a splice bracket provided in accordance with embodiments of the present application;
FIG. 6 is a partial schematic view of another splice holder provided in accordance with an embodiment of the present application;
FIG. 7 is a schematic view of a portion of a housing provided in accordance with an embodiment of the present application;
fig. 8 is a schematic diagram of a display device according to an embodiment of the present application.
10, a display device; 20. a backlight module; 30. a display panel; 40. an optical film; 50. a middle frame; 51. a bottom frame; 52. a top frame; 100. a box body; 110. a base plate; 111. a via hole; 112. a wiring hole; 120. a first side plate; 130. a support plate; 140. a second side plate; 200. splicing the brackets; 210. an installation position; 220. a support column; 300. a lamp panel; 310. a routing channel; 400. a heat dissipating component; 410. an input tube; 420. an output pipe; 430. a cooling unit; 440. a pump; 450. a cooling medium; 500. an immersion cavity; 600. a waterproof tape; 700. a waterproof gasket.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
The present application is described in detail below with reference to the figures and alternative embodiments.
As shown in fig. 1 and 2, the present application discloses a backlight module with combination of an immersive cooling heat dissipation design, aiming to achieve the characteristics of low energy consumption, low noise and good heat dissipation effect during heat dissipation. And backlight unit 20 adopts the concatenation lamp plate technique, lamp pearl on the lamp plate 300 can be general LED lamp pearl, also can be mini LED lamp pearl.
Specifically, the backlight module 20 includes a box 100, a splicing support 200 and a plurality of lamp panels 300, and the box 100 is of an integrally formed box structure and can be formed by stamping a metal plate; the splicing support 200 is preferably made of metal materials to ensure structural strength, the splicing support 200 is fixed on the box body 100, and the splicing support 200 is provided with a plurality of mounting positions 210 which are arranged in an array mode and are hollow inside.
The lamp panels 300 are all installed on the splicing support 200, specifically, in the installation positions 210 of the splicing support 200, and one lamp panel 300 is installed at each installation position 210; and after the lamp panel 300 is installed, the edge of the lamp panel 300 is fixed on the frame of the installation position 210, and the bottom of the lamp panel 300 is leaked from the hollow area of the installation position 210. At this time, a closed space is formed between the bottoms of the lamp panels 300 and the splicing support 200 and the box body 100, that is, the immersion cavity 500 is formed.
The backlight module 20 further includes a heat dissipation assembly 400, the heat dissipation assembly 400 includes an input tube 410, an output tube 420, a cooling unit 430, a pump 440, and a cooling medium 450, the cooling medium 450 may be a cooling liquid or a cooling gas, when the cooling medium 450 is a cooling liquid, the cooling medium may be water, a fluorinated liquid, mineral oil, or other cooling liquid material, and at this time, the pump 440 is a water pump; when the cooling medium 450 is a cooling gas, it may be nitrogen or other gas that can be used for cooling, and the pump 440 is an air pump. The cooling medium 450 is filled in the immersion cavity 500, and directly contacts with the inner wall of the box body 100, the bottom of the lamp panel 300 and the bottom of the splicing support 200, so that heat on the lamp panel 300, the box body 100 and the splicing support 200 is taken away, and heat conduction is avoided. The cooling unit 430 is a structure, device or material that can cool the cooling medium 450, such as a blower, dry ice, or a compressor.
Moreover, the inner wall of the box body 100 and the splicing support 200 can be subjected to anti-corrosion treatment, such as electroplating, bluing or coating, to prevent the cooling medium 450 in the immersion cavity 500 from rusting and corroding the inner wall of the box body 100 and the splicing support 200.
The input pipe 410 and the output pipe 420 are respectively arranged on the box body 100 and are communicated with the immersion cavity 500, the output pipe 420, the cooling unit 430, the pump 440 and the input pipe 410 are sequentially connected, and the cooling unit 430 cools the cooling medium 450 flowing out of the output pipe 420; the pump 440 controls the flow of the cooling medium 450 from the outlet conduit 420 to the immersion chamber 500, and the cooling medium flows from the inlet conduit 410 back into the immersion chamber 500 after being cooled by the cooling unit 430.
Compared with the scheme that an air cooling system is additionally arranged in the display equipment, the scheme that the air cooling system is used for cooling the lamp panel 300 and the lamp beads is adopted; in the embodiment of the application, the heat dissipation assembly 400 is additionally arranged in the backlight module 20, the lamp panel 300 and the lamp beads are dissipated heat through the cooling medium 450, only a small amount of electric quantity is needed to control the operation of the pump 440, and the cooling medium 450 does not need to flow rapidly, so that the electric quantity of the heat dissipation assembly 400 during operation is greatly saved; compared with the moving and static conditions caused by the operation of the fan in the air cooling system, when the heat dissipation assembly 400 operates, the flowing of the cooling medium 450 and the sound caused by the operation of the pump 440 are small, and therefore the heat dissipation design provided by the embodiment of the application is beneficial to reducing energy consumption and noise.
In addition, this application adopts immersive cooling design, cool off the heat dissipation with the direct submergence of bottom of lamp plate in coolant, for the water-cooling design that sets up the water pipe at backlight unit 20's the back, and carry out the opening and combine the forced air cooling design of fan at backlight unit 20's the back, radiating component can directly absorb the heat on lamp plate 300 in this application, do not receive the influence of intermediate structure or intermediate medium, thermal rising on the lamp plate 300 has directly been avoided, make backlight unit 20 possess very good radiating effect, backlight unit 20's life has been guaranteed.
Of course, the backlight module 20 further includes a middle frame 50 and an optical film 40, wherein the middle frame 50 is fixed on the box 100, and the optical film 40 is fixed on the middle frame 50.
As shown in fig. 1, when the backlight module 20 is used, the input tube 410 is located at the bottom of the box 100, and the output tube 420 is located at the top of the box 100. In other words, taking the monitor of the desktop computer as an example, the monitor includes a display screen and a base, the display screen is installed on the base, when the monitor of the desktop computer is installed on the computer desk, one side of the display screen close to the base is the bottom of the corresponding backlight module 20, that is, the bottom of the box 100; the side of the display screen away from the base is the top of the corresponding backlight module 20, i.e. the top of the box 100.
According to the rule of expansion with heat and contraction with cold of liquid or gas, after the temperature of the cooling medium 450 rises, the volume is increased, the density is reduced, the molecules of the cooling medium 450 with high temperature move upwards, and the molecules of the cooling medium 450 with low temperature have high density and move downwards to form convection, so that the cooling medium 450 can float on the cooling medium 450 with low temperature after being heated. Therefore, the outlet pipe 420 is disposed at the top of the cabinet 100, so that the heated cooling medium 450 can be discharged, and the unheated cooling medium 450 is left in the immersion chamber 500, thereby ensuring the heat dissipation effect.
Further, the input pipe 410 and the output pipe 420 are respectively located at two opposite corners of the box body 100. Explaining the state of the backlight module 20 or the display device 10 in use, at this time, the backlight module 20 and the box 100 are vertically placed and face a user, the input tube 410 is positioned at the lower left corner of the box 100, and the output tube 420 is positioned at the upper right corner of the box 100; alternatively, the input pipe 410 is located at the lower right corner of the tank 100 and the output pipe 420 is located at the upper left corner of the tank 100. By such an arrangement, the cooling medium 450 needs to undergo longitudinal and transverse flows from the inlet to the outlet, and can take away more heat, thereby improving the utilization rate of the cooling medium 450. Meanwhile, the problem that the cooling medium 450 enters the immersion cavity 500 from the input pipe 410 and is directly discharged from the output pipe 420 under the condition of no temperature rise due to inertia acting force after entering the immersion cavity 500 by arranging the input pipe 410 and the output pipe 420 on the same vertical line, so that the heat dissipation effect is poor is solved.
Referring to fig. 2 and 5, the mounting position 210 is an annular structure, and the cross section of the mounting position is stepped, that is, a rectangular notch is formed at the top of the mounting position 210; the edge of the lamp panel 300 is of an inverted step structure, and may be regarded as a rectangular notch formed at the bottom of the edge of the lamp panel 300, or may be regarded as the bottom of the edge of the lamp panel 300 is higher than the bottom of the central area of the edge.
At this time, the bottom of the edge of the lamp panel 300 is attached to the step surface of the mounting position 210, and the bottom of the central area of the edge is flush with the bottom of the lamp panel 300 bracket; the lamp panel 300 and the installation position 210 are fixed by adhering with a waterproof adhesive tape 600. Specifically, the vertical face at the edge of the lamp panel 300 and the vertical face of the installation position 210 are bonded through the waterproof adhesive tape 600, the horizontal face at the edge of the lamp panel 300 and the horizontal face of the installation position 210 are bonded through the waterproof adhesive tape 600, the gap between the lamp panel 300 and the splicing support 200 is also bonded through the waterproof adhesive tape 600, and the cooling medium 450 in the immersion cavity 500 is prevented from flowing out through the gap between the lamp panel 300 and the splicing support 200. The shape fit of step is made through the edge with installation position 210 and lamp plate 300, can enough conveniently support lamp plate 300, improves lamp plate 300's stability, can increase installation position 210 and lamp plate 300's bonding face again, improves waterproof, gas-proof effect.
Moreover, the bottom of the lamp panel 300 is further coated with a waterproof coating, so that after the backlight module 20 is used for a long time, the cooling medium 450 is stored in the immersion cavity 500 for a long time, and the lamp panel 300 is immersed in the cooling medium 450 for a long time, so that the cooling medium 450 permeates out of the lamp panel 300 to affect the circuit and the light emitting effect of the backlight module 20.
As shown in fig. 2, the side of the box 100 is a stepped structure, specifically, the box 100 includes a bottom plate 110, a first side plate 120, a supporting plate 130 and a second side plate 140, and the bottom plate 110 is located at the bottom of the lamp panel 300 and is opposite to the lamp panel 300; the first side plate 120 is vertically connected with an edge of the bottom plate 110, is arranged around the bottom plate 110, and extends toward the lamp panel 300; the supporting plate 130 is of an annular or square structure, is connected to one end of the first side plate 120 away from the bottom plate 110, is parallel to the bottom plate 110, and extends in a direction away from the bottom plate 110; the edge of the splicing support 200 is fixedly bonded with the support plate 130 through a waterproof adhesive tape 600; the second side plate 140 is an annular or square structure, is connected to one end of the support plate 130 away from the first side plate 120, is perpendicular to the first side plate 120, and extends in a direction away from the bottom plate 110; the bottom plate 110, the first side plate 120, the bottom of the splicing support 200 and the bottoms of the plurality of lamp panels 300 form a closed immersion cavity 500.
For the design that the side of back casing or backplate is the linear type among backlight unit 20 at present, the side of box 100 at the back among backlight unit 20 is made the step shape to this application embodiment, at first control immerse cavity 500 only under lamp plate 300, cooling medium 450 only submerge the bottom of lamp plate 300 can, all concatenation supports 200 of not needing to contact simultaneously, consequently immerse cavity 500 and need not be too big, thereby reduced cooling medium 450's use amount, be favorable to reducing the cost. Secondly, the supporting plate 130 of the case 100 can effectively support the edge of the splicing support 200 and is also bonded by the waterproof tape 600 to improve waterproof and airtight effects and stability.
As shown in fig. 3, 6 and 7, the bottom of the splicing support 200 is provided with a plurality of supporting columns 220, threaded holes are formed in the supporting columns 220, the bottom plate 110 is provided with a plurality of through holes 111 corresponding to the threaded holes one by one, the supporting columns 220 are abutted to the bottom plate 110, and the bottom plate 110 is fixed to the supporting columns 220 through the matching of screws and the through holes 111 and the threaded holes. Or, the support column 220 is not provided with a threaded hole therein, and the bottom plate 110 is not provided with the via hole 111, but directly adopts an adhesive manner to adhere and fix the bottom of the support column 220 to the bottom plate 110 of the box 100.
The support columns 220 are additionally arranged at the bottom of the splicing support 200, so that all areas of the splicing support 200 are supported, although the edge of the splicing support 200 can be supported by the support plates 130 of the box body 100, the middle of the splicing support 200 is easily sunken towards the bottom plate 110 of the box body 100 due to the gravity of the lamp panels 300 and the lamp panels 300 because the lamp panels 300 are arranged on the splicing support 200, the risk of fracture of the splicing support 200 can be caused, the distribution of cooling media 450 can be influenced, and the heat dissipation is uneven; especially large commercial display devices, and Mini LED display devices, result in greater load bearing capacity of the splice holder 200, which is more prone to these problems. Therefore, the support column 220 is additionally arranged at the bottom of the splicing support 200, so that the support column 220 is abutted to the bottom plate 110 of the box body 100, the splicing support 200 can be prevented from deforming, and the uniform heat dissipation effect can be ensured.
The second supporting column 220 is fixed with the bottom plate 110 of the box 100, so that the stability of the splicing support 200 is further improved, and the splicing support 200 is prevented from shaking in the backlight module 20.
A supporting column 220 is correspondingly arranged at each installation position 210, the supporting column 220 can be correspondingly arranged at the top corner of each installation position 210, and can be correspondingly arranged at the middle position of each side of each installation position 210. Because installation position 210 mainly bears the weight of lamp plate 300 among the concatenation support 200, through such design of arranging for the supporting effect of concatenation support 200 each department is even, has further improved concatenation support 200's stability.
The bottom outside of support column 220 is made annular incision to with the horizontal face and the longitudinal surface of incision department with the bottom plate 110 that via hole 111 department corresponds mutually, and still set up waterproof gasket 700 in laminating department, when supporting, still ensured waterproof, gas-tight effect, avoid the bottom of box 100 to leak water or gas leakage.
As shown in fig. 4, fig. 6 and fig. 7, a routing channel 310 extending toward the bottom plate 110 is disposed at the bottom of each lamp panel 300, and the routing channel 310 is hollow and is integrally formed with the lamp panel 300; a plurality of wiring holes 112 are formed in the bottom plate 110, the wiring holes 112 are correspondingly matched with the wiring channels 310 one by one, and the joints of the wiring holes 112 and the wiring channels 310 are sealed by waterproof gaskets 700; the wiring that communicates lamp pearl on the lamp plate 300 passes through walk line passageway 310 and walk line hole 112 and extend to keep away from in the bottom plate 110 one side of lamp plate 300.
Similarly, under the condition of not affecting the wiring of the lamp panel 300, the waterproof and gas-proof effects are also considered; moreover, walk behind line passageway 310 and the cooperation of bottom plate 110, can also support lamp plate 300, be favorable to reducing the pressure of lamp plate 300 to concatenation support 200. In addition, walk line channel 310 as with lamp plate 300 integrated into one piece's structure, can conduct the heat on the lamp pearl equally, and walk line channel 310 in immersing cavity 500, have great area of contact with cooling medium 450 to can further improve the radiating effect.
As shown In fig. 8, the present application further discloses a display device 10, where the display device 10 includes a display panel 30 and the backlight module 20 In the above embodiment, and the display panel 30 may be a TN (Twisted Nematic) display panel, an IPS (In-Plane Switching) display panel, a VA (Vertical Alignment) display panel, an MVA (Multi-Domain Vertical Alignment) display panel, which is not limited herein.
The middle frame 50 in the backlight module 20 is of a zigzag structure and comprises a bottom frame 51 and a top frame 52 which are arranged in parallel, wherein the top frame 52 is fixed on the box body 100, the bottom frame 51 is pressed on the splicing support 200, the optical film 40 in the backlight module 20 is fixed on the bottom frame 51, the display panel 30 is fixed on the top frame 52, and the optical film 40 is positioned between the display panel 30 and the lamp panel 300.
In addition, the inventive concept of the present application can form a great number of embodiments, but the space of the application document is limited, and the application document cannot be listed one by one, so that, on the premise of no conflict, the above-described embodiments or technical features can be combined arbitrarily to form a new embodiment, and after the embodiments or technical features are combined, the original technical effect will be enhanced.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A backlight module is characterized in that the backlight module comprises:
a box body;
the splicing support is fixed on the box body and is provided with a plurality of hollowed-out mounting positions;
the lamp panels are fixedly arranged in one-to-one correspondence with the installation positions, the bottoms of the lamp panels are leaked from the hollow areas of the installation positions, and closed immersion cavities are formed among the bottoms of the lamp panels, the bottoms of the splicing supports and the box body; and
the cooling medium is filled in the immersion cavity, the input pipe and the output pipe are respectively arranged on the box body and are communicated with the immersion cavity, the output pipe, the cooling unit, the pump and the input pipe are sequentially connected, and the cooling unit cools the cooling medium flowing out of the output pipe; and the pump is used for controlling the cooling medium in the immersion cavity to flow out of the output pipe, and after the cooling medium is cooled by the cooling unit, the cooling medium flows back to the immersion cavity from the input pipe.
2. The backlight module of claim 1, wherein the mounting position is of an annular structure, the cross section of the mounting position is stepped, the bottom of the edge of the lamp panel is higher than the bottom of the central area of the edge, the bottom of the edge of the lamp panel is attached to the stepped surface of the mounting position, and the bottom of the central area of the edge is flush with the bottom of the lamp panel bracket; the lamp plate with the installation position is fixed through waterproof sticky tape bonding.
3. The backlight module of claim 1, wherein the box body comprises a bottom plate, a first side plate, a supporting plate and a second side plate, and the bottom plate is positioned at the bottom of the lamp panel and is arranged opposite to the lamp panel; the first side plate is vertically connected with the edge of the bottom plate, arranged around the bottom plate and extends towards the lamp panel;
the supporting plate is of an annular or square structure, is connected with one end, far away from the bottom plate, of the first side plate, is arranged in parallel with the bottom plate, and extends in the direction far away from the bottom plate; the edge of the splicing support is fixedly bonded with the support plate through a waterproof adhesive tape; the second side plate is of an annular or square structure, is connected with one end of the support plate, which is far away from the first side plate, is perpendicular to the first side plate, and extends towards the direction far away from the bottom plate;
the bottom plate the first curb plate the bottom and a plurality of concatenation support the bottom of lamp plate forms inclosed cavity of immersing.
4. The backlight module as claimed in claim 3, wherein a plurality of support posts are disposed at the bottom of the splicing support, threaded holes are disposed in the support posts, a plurality of through holes corresponding to the threaded holes are disposed on the bottom plate, the support posts are abutted against the bottom plate, and the bottom plate and the support posts are fixed by screws engaged with the through holes and the threaded holes.
5. The backlight module of claim 4, wherein the support posts are disposed corresponding to the top corners of each of the mounting locations and the middle positions of each side of each of the mounting locations.
6. The backlight module according to claim 3, wherein a wiring channel extending toward the bottom plate is formed at the bottom of each lamp panel, and the wiring channel is hollow and is integrally formed with the lamp panel;
a plurality of wiring holes are formed in the bottom plate, the wiring holes are matched with the wiring channels in a one-to-one correspondence manner, and the joints of the wiring holes and the wiring channels are sealed through waterproof gaskets;
the intercommunication lamp pearl on the lamp plate walk the line pass through walk the line passageway with it extends to walk the line hole keep away from in the bottom plate one side of lamp plate.
7. The backlight module of claim 1, wherein the input duct is located at a bottom of the cabinet and the output duct is located at a top of the cabinet when the backlight module is in use.
8. The backlight module according to claim 7, wherein the input duct and the output duct are respectively located at two opposite corners of the case.
9. The backlight module of claim 1, wherein the bottom of the lamp panel is coated with a waterproof coating.
10. A display device, comprising a display panel and the backlight module as claimed in any one of claims 1 to 9, wherein the display panel is fixed on the backlight module, and the backlight module provides backlight for the display panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210900779.7A CN115209705B (en) | 2022-07-28 | 2022-07-28 | Backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210900779.7A CN115209705B (en) | 2022-07-28 | 2022-07-28 | Backlight module and display device |
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| CN115209705A true CN115209705A (en) | 2022-10-18 |
| CN115209705B CN115209705B (en) | 2023-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115857229A (en) * | 2023-02-28 | 2023-03-28 | 惠科股份有限公司 | Backlight module and display device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013037158A1 (en) * | 2011-09-15 | 2013-03-21 | 深圳市华星光电技术有限公司 | Composite backlight plate, backlight module and liquid crystal display |
| CN205350903U (en) * | 2016-02-17 | 2016-06-29 | 北京若水求实科技有限公司 | Strengthen radiating liquid cooling type LED lamps and lanterns module |
| CN110133914A (en) * | 2019-05-29 | 2019-08-16 | 深圳市华星光电半导体显示技术有限公司 | A kind of backing structure and preparation method thereof, display device |
| CN110570781A (en) * | 2019-09-29 | 2019-12-13 | 广东德豪锐拓显示技术有限公司 | LED display module and LED splicing display system |
| CN111735034A (en) * | 2020-06-22 | 2020-10-02 | 杨文玮 | LED circuit board with heat dissipation structure |
| CN114265243A (en) * | 2022-03-02 | 2022-04-01 | 惠科股份有限公司 | Backlight module and display device |
| CN114333627A (en) * | 2021-12-31 | 2022-04-12 | 惠科股份有限公司 | Backlight module and display device |
| CN216697683U (en) * | 2021-12-28 | 2022-06-07 | 绵阳惠科光电科技有限公司 | Backlight module and display device |
-
2022
- 2022-07-28 CN CN202210900779.7A patent/CN115209705B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013037158A1 (en) * | 2011-09-15 | 2013-03-21 | 深圳市华星光电技术有限公司 | Composite backlight plate, backlight module and liquid crystal display |
| CN205350903U (en) * | 2016-02-17 | 2016-06-29 | 北京若水求实科技有限公司 | Strengthen radiating liquid cooling type LED lamps and lanterns module |
| CN110133914A (en) * | 2019-05-29 | 2019-08-16 | 深圳市华星光电半导体显示技术有限公司 | A kind of backing structure and preparation method thereof, display device |
| CN110570781A (en) * | 2019-09-29 | 2019-12-13 | 广东德豪锐拓显示技术有限公司 | LED display module and LED splicing display system |
| CN111735034A (en) * | 2020-06-22 | 2020-10-02 | 杨文玮 | LED circuit board with heat dissipation structure |
| CN216697683U (en) * | 2021-12-28 | 2022-06-07 | 绵阳惠科光电科技有限公司 | Backlight module and display device |
| CN114333627A (en) * | 2021-12-31 | 2022-04-12 | 惠科股份有限公司 | Backlight module and display device |
| CN114265243A (en) * | 2022-03-02 | 2022-04-01 | 惠科股份有限公司 | Backlight module and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115857229A (en) * | 2023-02-28 | 2023-03-28 | 惠科股份有限公司 | Backlight module and display device |
| CN115857229B (en) * | 2023-02-28 | 2023-06-16 | 惠科股份有限公司 | Backlight module and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115209705B (en) | 2023-06-16 |
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