WO2015192679A1 - 显示模组的散热结构 - Google Patents

显示模组的散热结构 Download PDF

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Publication number
WO2015192679A1
WO2015192679A1 PCT/CN2015/076036 CN2015076036W WO2015192679A1 WO 2015192679 A1 WO2015192679 A1 WO 2015192679A1 CN 2015076036 W CN2015076036 W CN 2015076036W WO 2015192679 A1 WO2015192679 A1 WO 2015192679A1
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WO
WIPO (PCT)
Prior art keywords
heat dissipation
display module
air outlet
dissipation structure
air inlet
Prior art date
Application number
PCT/CN2015/076036
Other languages
English (en)
French (fr)
Inventor
张黔中
孙如斌
顾荣君
Original Assignee
上海启钧电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201410273054.5A external-priority patent/CN104020591B/zh
Priority claimed from CN201510137520.1A external-priority patent/CN104678636A/zh
Application filed by 上海启钧电子有限公司 filed Critical 上海启钧电子有限公司
Priority to US15/112,093 priority Critical patent/US10036914B2/en
Priority to KR1020167023132A priority patent/KR20160111515A/ko
Priority to JP2016549769A priority patent/JP2017514156A/ja
Priority to AU2015278124A priority patent/AU2015278124A1/en
Priority to EP15808866.6A priority patent/EP3088942B1/en
Publication of WO2015192679A1 publication Critical patent/WO2015192679A1/zh

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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
    • 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
    • G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
    • G02F1/133385—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • 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
    • 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
    • H05K7/20972—Forced ventilation, e.g. on heat dissipaters coupled to components
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133328—Segmented frames
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331—Cover glasses
    • 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
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/36—Airflow channels, e.g. constructional arrangements facilitating the flow of air
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements

Definitions

  • the invention relates to the field of screen display, and particularly relates to a heat dissipation structure of a display module.
  • liquid crystal panel there are two technical forms of the liquid crystal panel, which are respectively defined as a cell and an open cell.
  • the cell is filled with liquid crystal between the two glass substrates to form a sealed liquid crystal module, and the appearance is the same as that of the ordinary thin glass. It is configured on the basis of the cell to arrange various interfaces for external signal sources, but the open cell does not include components such as backlight modules in the liquid crystal display module.
  • the liquid crystal panel itself does not emit light, and the display function must be completed by the backlight module.
  • the main structure of the backlight module is composed of a light source, a light guide plate, an optical film, a diffusion sheet, a plastic frame and a back plate.
  • the backlight module and the liquid crystal panel are assembled to form a display module.
  • the technical considerations of the display module are mainly in terms of weight reduction, thinning, low cost, and heat dissipation of the display module.
  • the applicant's prior patent publication number is 104020591A
  • the invention and creation name is a display module structure and a mounting method thereof, and a display module structure is provided, and a plurality of function boards are fixed through a mounting frame, and the installation frame passes through a plurality of The mounting strip is formed by splicing, and the mounting structure formed on the inner side of the mounting frame is used to fix the function board in the mounting frame.
  • the display module structure includes a plurality of function boards 30 and a mounting frame 20 .
  • the mounting frame 20 is enclosed by a plurality of mounting bars 201 , and the inner side of the mounting frame 20 is formed with a mounting structure. 205.
  • the mounting structure 205 includes mounting grooves 208, 209 formed on the inner side of the mounting bar 201, and a mounting surface 207.
  • a heat dissipation structure 2012 is formed on the mounting bar 201.
  • the function board 30 includes a light board 302, a liquid crystal panel 304, a diffuser board 306, and an optical film 308.
  • the liquid crystal panel 304 is inserted and fixed in the mounting groove 208, and the optical film 308 and the diffusion plate 306 are inserted and fixed in the mounting groove 209.
  • the light board 302 is detachably mounted on the mounting surface 207.
  • the display module structure saves the integrated metal back plate, the front frame, and the plastic frame in the existing display module, thereby effectively saving cost, and the structure of the display module is flexibly adjusted. Strong adaptability.
  • the heat dissipation function of the above display module structure is poor, and it is formed on the mounting strip.
  • the heat dissipation structure performs heat conduction and heat dissipation. If the size of the display module is large, the light source on the light board is more, so that the heat in the display module is higher, and the existing heat conduction heat dissipation can not satisfy the function of timely heat dissipation, which may result in the display mode. The group was damaged due to excessive heat.
  • the existing heat dissipation technology also includes the use of a fan to form air convection for heat dissipation, but because the display module needs to maintain a clean space and avoid the influence of dust on the display effect, the air convection is treated when dealing with the heat dissipation problem of the display module.
  • the heat dissipation method is almost unattended.
  • the object of the present invention is to overcome the shortcomings of the prior art, and to provide a heat dissipation structure of a display module, which solves the difference in heat dissipation of the existing display module structure when heat is radiated by heat conduction, and the heat dissipation of the display module cannot be performed by using air convection. problem.
  • a heat dissipation structure of a display module includes an outer frame and a liquid crystal panel, an optical film, a diffusion plate, and a light panel, which are sequentially disposed in the outer frame, the liquid crystal panel and the optical film Forming a first module space therebetween, the heat dissipation structure includes an air inlet and an air outlet formed on the outer frame, and the air inlet and the air outlet are formed in the first module space a ventilation passage, and a filter screen is disposed at the air inlet and the air outlet.
  • the invention adopts an air inlet and an air outlet on the outer frame, and forms a ventilation passage in the module space between the liquid crystal panel and the diffusion plate, and uses the ventilation to form air convection to dissipate the display module, which can quickly dissipate heat.
  • the function, and the filter screen is arranged in the ventilation passage, effectively ensuring the cleanness in the module space, thereby ensuring a good display effect and avoiding the influence of dust, particles and the like.
  • a further improvement of the heat dissipation structure of the display module of the present invention is that the air inlet and the air outlet are disposed on opposite sides of the outer frame.
  • a further improvement of the heat dissipation structure of the display module of the present invention is that a second module space is formed between the diffusion plate and the lamp plate, and the heat dissipation structure further includes an air inlet and a row opened on the outer frame The tuyere, the air inlet and the air outlet are formed with a second ventilation passage in the second module space, and a filter net is disposed at the air inlet and the air outlet.
  • a further improvement of the heat dissipation structure of the display module of the present invention is that the air inlet and the air outlet are disposed on opposite sides of the outer frame.
  • the heat dissipation structure of the display module further includes a first ventilation component disposed at the air inlet and the air inlet, and The second ventilation component at the air outlet.
  • a further improvement of the heat dissipation structure of the display module of the present invention is that the first ventilation component includes a first fan fixedly mounted to the outer frame at one end, and the other end of the first fan is provided with the filter mesh.
  • a further improvement of the heat dissipation structure of the display module of the present invention is that the second ventilation component includes a second fan fixedly mounted to the outer frame at one end, and the other end of the second fan is provided with the filter mesh.
  • a further improvement of the heat dissipation structure of the display module of the present invention is that the cover glass is attached to the surface of the first module space.
  • a further improvement of the heat dissipation structure of the display module of the present invention is that the liquid crystal panel and the cover glass are disposed on the mounting surface of the outer frame, and the peripheral edge of the outer surface of the cover glass is fixed to the outer frame by a pressure plate .
  • a further improvement of the heat dissipation structure of the display module of the present invention is that a heat dissipation plate is attached to the back surface of the light panel.
  • FIG. 1 is a schematic structural view of a display module in the prior art
  • Figure 2 is a cross-sectional view of the display module of Figure 1;
  • FIG. 3 is a schematic structural view of a heat dissipation structure of a display module of the present invention.
  • FIG. 4 is a cross-sectional view showing a heat dissipation structure of a display module of the present invention.
  • the invention provides a heat dissipation structure of a display module, and adopts a method of setting a ventilation passage to form air convection to dissipate heat of the display module, and ensuring a display effect, and simultaneously performing heat dissipation processing on the display module, compared with The existing heat conduction heat dissipation has a better heat dissipation effect.
  • the invention forms a ventilation passage by opening an air inlet and an air outlet on the outer frame, and overcomes the technical prejudice that the air-cooling heat dissipation cannot be applied to the liquid crystal display module, and ensures the air inside the display module is clean. Air-cooled air convection heats the display module.
  • the heat dissipation structure of the display module of the present invention will be described below with reference to the accompanying drawings.
  • the display module includes an outer frame 401, a liquid crystal panel 402 sequentially disposed in the outer frame 401, an optical film 403, a diffusion plate 404, and a light plate 405.
  • a first module space 408 is formed between the 402 and the optical film 403, and a second module space 409 is formed between the diffusion plate 404 and the lamp plate 405.
  • the heat dissipation structure of the display module of the present invention includes a frame.
  • the air inlet 511 and the air outlet 512 of the 401, the air inlet 511 and the air outlet 512 are formed with a first ventilation passage in the first module space 408, and the air inlet 511 and the air outlet 512 are provided with a filter.
  • Air convection is formed in the first module space 408 through the first ventilation passage, and the first module space 408 is blown and cooled, so as to ensure air cleanliness in the first module space 408, and avoid dust, particles and the like.
  • the filter is provided at the air inlet 511 and the air outlet 512 forming the first ventilation passage to filter out impurities (such as dust and particles) in the outside air to ensure the display effect.
  • the heat dissipation structure of the display module of the present invention further includes an air inlet 521 and an air outlet 522 formed on the outer frame 401.
  • the air inlet 521 and the air outlet 522 form a second ventilation passage in the second module space 409.
  • the air inlet 521 and the air outlet 522 forming the second ventilation passage are respectively provided with a filter screen to filter out impurities such as dust and particles in the external air, and the second ventilation passage is formed in the second module space 409.
  • the air is convected, and the second module space 409 is blown and radiated.
  • the inner side surface of the outer frame 401 of the display module is provided with a mounting structure, and the liquid crystal panel 402, the optical film 403, the diffusion plate 404, and the light board 405 are mounted and fixed by the mounting structure, and are disposed at the top of the outer frame 401.
  • the liquid crystal panel 402 is not directly exposed to the outside.
  • a glass piece is disposed on the front surface of the liquid crystal panel 402.
  • a cover glass 407 is attached to the surface of the 408.
  • the cover glass 407 is mounted on the mounting surface of the outer frame 401 together with the liquid crystal panel 402.
  • the cover glass 407 is fixed to the outer frame 401 by the pressure plate 410.
  • the pressure plate 410 has an L-shaped structure. One end is press-fitted to the outer edge of the outer surface of the cover glass 407, and the other end is attached to the outer side surface of the outer frame 401, and the other end of the pressure plate 410 corresponds to the air inlet 511, the air outlet 512, the air inlet 521 of the outer frame 401, And the air outlet 522 is provided with a vent.
  • the optical film 403 and the diffusion plate 404 are disposed in abutting manner and are inserted into the mounting grooves on the outer frame 401.
  • a heat dissipation plate 406 is attached to the back surface of the lamp plate 405.
  • a first module space 408 is formed between the liquid crystal panel 402 and the optical film 403, and a second module space 409 is formed between the diffusion plate 404 and the light plate 405.
  • the light emitted by the light source passes through the second module space 409, is irradiated onto the diffusion plate 404, passes through the diffusion plate 404 and the optical film 403, and then is irradiated to the first module space 408, and then passes through the first
  • the module space 408 is irradiated onto the liquid crystal panel 402 to realize display of the screen.
  • the light passes through the first module space 408, if impurities are present in the first module space 408, the light passes through the diffusion plate 404 and the optical film 403, and is easily affected by impurities, causing reflection or scattering, thereby affecting the display.
  • the effect is that when the display module is packaged, the air cleanliness in the first module space 408 needs to be particularly ensured to ensure that there is no impurity in the first module space 408.
  • the first ventilation passage in the heat dissipation structure of the display module of the present invention includes an air inlet 511 and an air outlet 512 formed on the outer frame 401.
  • the air inlet 511 and the air outlet 512 are opened at On the opposite side of the outer frame 401 of the first module space 408, a first ventilation passage is formed in the first module space 408 through the air inlet 511 and the air outlet 512, thereby generating air convection in the first module space 408.
  • the second ventilation passage in the heat dissipation structure of the display module includes an air inlet 521 and an air outlet 522 formed on the outer frame 401.
  • the air inlet 521 and the air outlet 522 are opened in the second module.
  • a second ventilation passage is formed in the second module space 409 through the air inlet 521 and the air outlet 522, thereby generating air convection in the second module space 409 for heat dissipation.
  • a filter screen is disposed on each of the air inlet 511, the air outlet 512, the air inlet 521, and the air outlet 522.
  • the heat dissipation structure of the display module further includes a first ventilation component 53 disposed at the air inlet 511 and the air inlet 521, and a second ventilation disposed at the air outlet 512 and the air outlet 522.
  • the assembly 54 forms air convection in the first module space 408 and the second module space 409 through the cooperation of the first ventilation component 53 and the second ventilation component 54, and then the first module space 408 and the The second module space 409 performs heat dissipation.
  • the first ventilation unit 53 includes a first fan 532 that is fixedly mounted on the outer frame 401 at one end, and a filter 534 is disposed at the other end of the first fan 532.
  • the first ventilation component 53 further includes a first mounting frame 531.
  • the first fan 532 is mounted on the outer frame 401 through the first mounting frame 531, and is disposed on the first mounting frame 531.
  • the second ventilation unit 54 includes a second fan 542 that is fixedly mounted on the outer frame 501 at one end, and a filter 544 is disposed at the other end of the second fan 542.
  • the second ventilation module 53 further includes a second mounting frame 541.
  • the second fan 542 is mounted on the outer frame 401 through the second mounting frame 541, and the second mounting frame 541 is disposed on the second mounting frame 541.
  • the opening 543 is provided with a filter 544 at the opening 543.
  • the first fan 532 is a blower fan, and the air filtered through the filter net 534 is blown into the display module
  • the second fan 542 is a suction fan, which sucks the air in the display module, passes through the blow fan and sucks The cooperation of the fan forms the air
  • the convection heats the first module space 408 and the second module space 409 while ensuring air cleanliness in the first module space 408 and the second module space 409.
  • the air inlet and the air outlet are opened on the outer frame, and a ventilation passage is formed in the module space between the liquid crystal panel and the diffusion plate, and the air is used to form a convection to dissipate heat to the display module, which can quickly dissipate heat.
  • the filter mesh is arranged in the ventilation passage, the cleanness in the module space is effectively ensured, thereby ensuring a good display effect and avoiding the influence of dust, particles and the like.

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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)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种显示模组的散热结构，该显示模组包括外框（401）和依次设于外框（401）内的液晶面板（402）、光学膜片（403）、扩散板（404）、以及灯板（405），所述液晶面板（402）与所述光学膜片（403）之间形成有第一模组空间（408），所述散热结构包括开设于所述外框（401）上的进风口（511）和出风口（512），所述进风口（511）和所述出风口（512）于所述第一模组空间（408）内形成有第一通风通道，且所述进风口（511）和所述出风口（512）处均设有过滤网。采用外框上开设进风口和出风口，进而在液晶面板和扩散板之间的模组空间内形成通风通道，利用通风形成空气对流对显示模组进行散热，可以起到快速散热的作用，且由于在通风通道设置了过滤网，有效保证模组空间内的洁净度，进而保证了良好的显示效果，避免了尘埃、颗粒等的影响。

Description

显示模组的散热结构 技术领域
本发明涉及屏幕显示领域，特指一种显示模组的散热结构。
背景技术
在液晶显示器中，液晶面板存在两种技术形式，业界分别定义为cell和open cell，cell是在两玻璃基板间充填液晶从而形成一密闭的液晶组件，外观与普通的薄片玻璃无异，open cell是在cell的基础上配置各类接口，以便外接信号源等，但open cell不包含液晶显示模组中的背光模组等元件。
液晶面板本身不发光，其必须通过背光模组完成显示功能，背光模组的主要结构由发光源、导光板、光学膜片、扩散片、胶框以及背板等部分组成。背光模组与液晶面板组装在一起就形成了显示模组，对于显示模组的技术考量，主要是在显示模组的轻量化、薄型化、低成本、以及散热性等方面。
申请人的在先专利公开号为104020591A，发明创造名称为显示模组结构及其安装方法中，提供了一种显示模组结构，通过安装框固定多个功能板，该安装框又通过多个安装条围合拼接形成，安装框内侧面上形成的安装结构用于将功能板固定于安装框内。如图1和图2所示，显示模组结构包括多个功能板30和安装框20，安装框20通过多个安装条201围合拼接而成，且安装框20的内侧面形成有安装结构205，安装结构205包括有形成于安装条201内侧面上的安装槽208,209、以及安装面207。安装条201上形成有散热结构2012。功能板30包括灯板302、液晶面板304、扩散板306、以及光学膜片308，其中的液晶面板304插入固定于安装槽208内，光学膜片308和扩散板306插入固定于安装槽209内，灯板302可拆卸的安装于安装面207上。上述显示模组结构与现有技术相比，省去了现有显示模组中的整体化金属背板、前框、以及胶框，有效地节约成本，且该显示模组结构尺寸调节灵活，适配性强。
但是，上述显示模组结构的散热功能较差，其通过形成于安装条上的 散热结构进行热传导散热，若显示模组尺寸较大时，灯板上的灯源较多使得显示模组内的热量较高，现有的热传导散热已不能满足及时散热的功能，会导致显示模组因热量过高而损坏。另外，现有的散热技术还包括采用风扇形成空气对流进行散热，但是由于显示模组内需保持洁净空间，避免尘埃对显示效果的影响，使得在处理显示模组的散热问题时，对于空气对流的散热方法几乎无人问津。
发明内容
本发明的目的在于克服现有技术的缺陷，提供一种显示模组的散热结构，解决现有显示模组结构采用热传导进行散热时存在的散热差和无法采用空气对流进行显示模组内部散热的问题。
实现上述目的的技术方案是：
本发明一种显示模组的散热结构，该显示模组包括外框和依次设于外框内的液晶面板、光学膜片、扩散板、以及灯板，所述液晶面板与所述光学膜片之间形成有第一模组空间，所述散热结构包括开设于所述外框上的进风口和出风口，所述进风口和所述出风口于所述第一模组空间内形成有第一通风通道，且所述进风口和所述出风口处均设有过滤网。
本发明采用了外框上开设进风口和出风口，进而在液晶面板和扩散板之间的模组空间内形成通风通道，利用通风形成空气对流对显示模组进行散热，可以起到快速散热的作用，且由于在通风通道设置了过滤网，有效保证模组空间内的洁净度，进而保证了良好的显示效果，避免了尘埃、颗粒等的影响。
本发明显示模组的散热结构的进一步改进在于，所述进风口和所述出风口设于所述外框上相对的侧部。
本发明显示模组的散热结构的进一步改进在于，所述扩散板和所述灯板之间形成有第二模组空间，所述散热结构还包括开设于所述外框上的入风口和排风口，所述入风口和所述排风口于所述第二模组空间内形成有第二通风通道，且所述入风口和所述排风口处均设有过滤网。
本发明显示模组的散热结构的进一步改进在于，所述入风口和所述排风口设于所述外框上相对的侧部。
本发明显示模组的散热结构的进一步改进在于，所述散热结构还包括设于所述进风口和所述入风口处的第一通风组件和设于所述出风口和所 述排风口处的第二通风组件。
本发明显示模组的散热结构的进一步改进在于，所述第一通风组件包括一端固定安装于所述外框的第一风扇，所述第一风扇的另一端设有所述过滤网。
本发明显示模组的散热结构的进一步改进在于，所述第二通风组件包括一端固定安装于所述外框的第二风扇，所述第二风扇的另一端设有所述过滤网。
本发明显示模组的散热结构的进一步改进在于，所述液晶面板远离所述第一模组空间的面上贴设有防护玻璃。
本发明显示模组的散热结构的进一步改进在于，所述液晶面板和所述防护玻璃设于所述外框的安装面上，所述防护玻璃外表面的周缘通过压板固定于所述外框上。
本发明显示模组的散热结构的进一步改进在于，所述灯板的背面贴设有散热板。
附图说明
图1为现有技术中显示模组的结构示意图；
图2为图1中显示模组的剖视图；
图3为本发明显示模组的散热结构的结构示意图；以及
图4为本发明显示模组的散热结构的剖视图。
具体实施方式
下面结合附图和具体实施例对本发明作进一步说明。
本发明提供了一种显示模组的散热结构，采用了设置通风通道形成空气对流对显示模组进行散热的方法，保证显示效果的同时，可以快速的对显示模组进行散热处理，相比于现有的热传导散热具有较好的散热效果。本发明通过在外框上开设进风口和出风口来形成通风通道，克服了现有不能将风冷式散热应用于液晶显示模组的技术偏见，在确保显示模组内部空气洁净的前提下，利用风冷式的空气对流对显示模组进行散热处理。下面结合附图对本发明显示模组的散热结构进行说明。
如图3和图4所示，显示模组包括外框401和依次设于外框401内的液晶面板402、光学膜片403、扩散板404、以及灯板405，在液晶面板 402和光学膜片403之间形成有第一模组空间408，在扩散板404和灯板405之间形成有第二模组空间409，本发明的显示模组的散热结构包括开设于外框401上的进风口511和出风口512，该进风口511和出风口512于第一模组空间408内形成有第一通风通道，该进风口511和出风口512处均设有过滤网。通过第一通风通道在第一模组空间408内形成空气对流，对第一模组空间408进行吹风散热，为确保第一模组空间408内的空气洁净度，避免尘埃、颗粒等对光的影响，在形成第一通风通道的进风口511和出风口512处设置过滤网，将外部空气内的杂质(如尘埃和颗粒等)滤除，保证显示效果。
本发明的显示模组的散热结构还包括开设于外框401上的入风口521和排风口522，该入风口521和排风口522于第二模组空间409内形成有第二通风通道，该形成第二通风通道的入风口521和排风口522处均设有过滤网，滤除外部空气内的杂质，比如尘埃和颗粒等，第二通风通道在第二模组空间409内形成空气对流，对第二模组空间409进行吹风散热。
如图4所示，显示模组的外框401的内侧面设有安装结构，通过安装结构安装固定液晶面板402、光学膜片403、扩散板404、以及灯板405，在外框401的顶部设有安装液晶面板402的安装面，中部设有安装光学膜片403和扩散板404的安装槽，在底部设有安装灯板405的安装面。显示模组在实际使用时，不会将液晶面板402直接裸露于外部，一般会在液晶面板402的正面设置玻璃片，为保证液晶面板402的显示效果，在液晶面板402远离第一模组空间408的面贴设防护玻璃407，该防护玻璃407和液晶面板402一起安装于外框401的安装面上，再通过压板410将防护玻璃407安装固定于外框401，压板410为L形结构，一端压合于防护玻璃407外表面的周缘处，另一端贴合固定于外框401的外侧面，且压板410的另一端对应外框401上的进风口511、出风口512、入风口521、以及排风口522均设有通风口。光学膜片403和扩散板404贴合设置，一起插设于外框401上的安装槽内。为提高灯板405的散热效果，在灯板405的背面贴设有散热板406。
在显示模组的外框401内，液晶面板402和光学膜片403之间形成第一模组空间408，扩散板404和灯板405之间形成第二模组空间409，灯板405上的灯源发出的光通过第二模组空间409，照射到扩散板404上，经过扩散板404和光学膜片403后照射到第一模组空间408，再经过第一 模组空间408照射到液晶面板402上，实现了画面的显示。光在经过第一模组空间408时，若在第一模组空间408内存有杂质，光经过扩散板404和光学膜片403后，很容易被杂质影响，产生反射或者散射，进而影响了显示效果，所以显示模组在封装时，需要特别保证第一模组空间408内的空气洁净度，确保该第一模组空间408内无杂质。
如图3所示，本发明显示模组的散热结构中的第一通风通道包括开设于外框401上的进风口511和出风口512，较佳地，该进风口511和出风口512开设在第一模组空间408处外框401相对的侧部上，通过进风口511和出风口512在第一模组空间408内形成第一通风通道，进而在第一模组空间408内产生空气对流进行散热。本发明显示模组的散热结构中的第二通风通道包括开设于外框401上的入风口521和排风口522，较佳地，该入风口521和排风口522开设在第二模组空间409处外框401相对的侧部上，通过入风口521和排风口522在第二模组空间409内形成第二通风通道，进而在第二模组空间409内产生空气对流进行散热。
作为本发明的一较佳实施方式，在进风口511、出风口512、入风口521、以及排风口522上分别设置过滤网。
作为本发明的一较佳实施方式，显示模组的散热结构还包括设于进风口511和入风口521处的第一通风组件53和设于出风口512和排风口522处的第二通风组件54，通过第一通风组件53和第二通风组件54的配合，在第一模组空间408内和第二模组空间409内分别形成了空气对流，进而对第一模组空间408和第二模组空间409进行散热。
第一通风组件53包括一端安装固定于外框401上的第一风扇532，该第一风扇532的另一端设有过滤网534。作为本发明的另一较佳实施方式，该第一通风组件53还包括第一安装框531，第一风扇532通过第一安装框531安装于外框401上，在第一安装框531上设有开口533，在开口533处设有过滤网534。第二通风组件54包括一端安装固定于外框501上的第二风扇542，该第二风扇542的另一端设有过滤544。作为本发明的另一较佳实施方式，该第二通风组件53还包括第二安装框541，第二风扇542通过第二安装框541安装于外框401上，第二安装框541上设有开口543，在开口543处设有过滤网544。较佳地，第一风扇532为吹风扇，将经过过滤网534过滤的空气吹入到显示模组内，第二风扇542为吸风扇，将显示模组内的空气吸出，通过吹风扇和吸风扇的配合形成了空气 对流，对第一模组空间408和第二模组空间409进行散热，同时确保了第一模组空间408和第二模组空间409内的空气洁净度。
本发明显示模组的散热结构的有益效果为：
采用了外框上开设进风口和出风口，进而在液晶面板和扩散板之间的模组空间内形成通风通道，利用通风形成空气对流对显示模组进行散热，可以起到快速散热的作用，且由于在通风通道设置了过滤网，有效保证模组空间内的洁净度，进而保证了良好的显示效果，避免了尘埃、颗粒等的影响。
以上结合附图实施例对本发明进行了详细说明，本领域中普通技术人员可根据上述说明对本发明做出种种变化例。因而，实施例中的某些细节不应构成对本发明的限定，本发明将以所附权利要求书界定的范围作为本发明的保护范围。

Claims (10)

  1. 一种显示模组的散热结构，该显示模组包括外框和依次设于所述外框内的液晶面板、光学膜片、扩散板、以及灯板，所述液晶面板与所述光学膜片之间形成有第一模组空间，其特征在于，所述散热结构包括开设于所述外框上的进风口和出风口，所述进风口和所述出风口于所述第一模组空间内形成有第一通风通道，且所述进风口和所述出风口处均设有过滤网。
  2. 如权利要求1所述的显示模组的散热结构，其特征在于，所述进风口和所述出风口设于所述外框上相对的侧部。
  3. 如权利要求1或2所述的显示模组的散热结构，其特征在于，所述扩散板和所述灯板之间形成有第二模组空间，所述散热结构还包括开设于所述外框上的入风口和排风口，所述入风口和所述排风口于所述第二模组空间内形成有第二通风通道，且所述入风口和所述排风口处均设有过滤网。
  4. 如权利要求3所述的显示模组的散热结构，其特征在于，所述入风口和所述排风口设于所述外框上相对的侧部。
  5. 如权利要求4所述的显示模组的散热结构，其特征在于，所述散热结构还包括设于所述进风口和所述入风口处的第一通风组件和设于所述出风口和所述排风口处的第二通风组件。
  6. 如权利要求5所述的显示模组的散热结构，其特征在于，所述第一通风组件包括一端固定安装于所述外框的第一风扇，所述第一风扇的另一端设有所述过滤网。
  7. 如权利要求5所述的显示模组的散热结构，其特征在于，所述第二通风组件包括一端固定安装于所述外框的第二风扇，所述第二风扇的另一端设有所述过滤网。
  8. 如权利要求1所述的显示模组的散热结构，其特征在于，所述液晶面板远离所述第一模组空间的面上贴设有防护玻璃。
  9. 如权利要求8所述的显示模组的散热结构，其特征在于，所述液晶面板和所述防护玻璃设于所述外框的安装面上，所述防护玻璃外表面的周缘通过压板固定于所述外框上。
  10. 如权利要求1所述的显示模组的散热结构，其特征在于，所述灯 板的背面贴设有散热板。
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EP3088942B1 (en) 2021-03-03
KR20160111515A (ko) 2016-09-26
EP3088942A4 (en) 2017-04-26
US20170269423A1 (en) 2017-09-21
US10036914B2 (en) 2018-07-31

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