CN110262131A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN110262131A CN110262131A CN201910561603.1A CN201910561603A CN110262131A CN 110262131 A CN110262131 A CN 110262131A CN 201910561603 A CN201910561603 A CN 201910561603A CN 110262131 A CN110262131 A CN 110262131A
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- China
- Prior art keywords
- bottom plate
- backlight module
- circuit board
- cooling fin
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G02F1/133382—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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Abstract
The invention discloses a kind of backlight module and display devices, belong to field of display technology, for solving the lower technical problem of backlight module radiating efficiency.The backlight module includes: metal frame, lamp bar and radiating subassembly, in which: including bottom plate and the side plate of the bottom plate surrounding is arranged in the metal frame, and the side plate and the bottom plate form accommodation space；The lamp bar is located in the accommodation space, and the lamp bar includes circuit board and light source, and the side of the bottom plate is arranged in the circuit board, and the side on the circuit board far from the bottom plate is arranged in the light source, with the circuit board electrical connection；Wherein, the metal frame is being provided with through-hole with the orthographic projection region on direction of the light source perpendicular to the bottom plate；The radiating subassembly, including the first cooling fin, first cooling fin are set in the through-hole, and first cooling fin is arranged close to the part of the circuit board with the circuit board contacts.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of backlight module and display device.
Background technique
With the continuous development of liquid crystal display manufacturing technology, realize that the narrow frameization of liquid crystal display has been increasingly becoming one
Kind development trend, and core component one of of the backlight module as display are most important by its narrow frameization.
In the prior art, the narrow frame of Yao Shixian backlight module, light emitting diode (Light EmittingDiode,
LED volume) needs very little, and needs greater number of LED.However, a large amount of heat can be generated when LED operation, cause
The fever of backlight module is serious, the display problems such as ghost occurs if radiating may result in not in time.
As it can be seen that the lower problem of backlight module radiating efficiency exists in the prior art.
Summary of the invention
The embodiment of the present application provides a kind of backlight module and display device, for improving the radiating efficiency of backlight module.
On the one hand, a kind of backlight module is provided, comprising: metal frame, lamp bar and radiating subassembly, in which:
Including bottom plate and the side plate of the bottom plate surrounding, the side plate and the sole shape is arranged in the metal frame
At accommodation space；
The lamp bar is located in the accommodation space, and the lamp bar includes circuit board and light source, and the circuit board setting exists
The side of the bottom plate, the light source are arranged in the side on the circuit board far from the bottom plate, are electrically connected with the circuit board
It connects；
Wherein, the metal frame be provided with the orthographic projection region on direction of the light source perpendicular to the bottom plate it is logical
Hole；
The radiating subassembly, including the first cooling fin, first cooling fin are set in the through-hole, and described first
Cooling fin is arranged close to the part of the circuit board with the circuit board contacts.
In a kind of possible design scheme, the radiating subassembly further includes the second cooling fin, and second cooling fin is set
It is placed in side of the bottom plate far from the circuit board, on the direction perpendicular to the bottom plate, second cooling fin is in institute
Projection and the through-hole for stating bottom plate are at least partly overlapping in the projection of the bottom plate, and second cooling fin and described first
Cooling fin contact setting.
In a kind of possible design scheme, on the direction perpendicular to the bottom plate, second cooling fin covers institute
State bottom plate.
In a kind of possible design scheme, the backlight module further includes light guide plate, and the light guide plate is arranged described
Side of the circuit board far from the bottom plate, the light-emitting surface of the light guide plate intersect with the light-emitting surface of the light source.
In a kind of possible design scheme, shape of the through-hole on the direction for being parallel to the bottom plate and the light
Source is identical in the shape being parallel on the bottom plate direction.
In a kind of possible design scheme, the through-hole on the direction perpendicular to the bottom plate with the light source one by one
It is correspondingly arranged.
In a kind of possible design scheme, on the direction for being parallel to the bottom plate, the length phase of each through-hole
0mm-0.2mm is inside contracted for the length of each light source or extends out 0mm-0.5mm.
In a kind of possible design scheme, on the direction of the vertical bottom plate, the circuit board is on the bottom plate
Projection cover the projection of the through-hole on the bottom plate.
In a kind of possible design scheme, the material of the radiating subassembly is graphite, in copper alloy, carbon copper, copper foil
It is at least one.
In a kind of possible design scheme, the backlight module further includes glue frame, and the glue frame is connect with the side plate
Form the accommodation space.
Second aspect provides a kind of display device, including as described in any in first aspect backlight module and with institute
State the display panel that backlight module is arranged oppositely.
The application has the beneficial effect that:
Backlight module in the embodiment of the present application includes metal frame, lamp bar and radiating subassembly.Wherein, metal frame, including bottom
Plate and the side plate that bottom plate surrounding is arranged in, side plate and bottom plate form accommodation space；Lamp bar is located in accommodation space, and lamp bar includes
The side of bottom plate is arranged in circuit board and light source, circuit board, and light source is arranged on circuit boards far from the side of bottom plate, with circuit board
Electrical connection；Metal frame is being provided with through-hole with the orthographic projection region on direction of the light source perpendicular to bottom plate；Radiating subassembly, including the
One cooling fin, the first cooling fin are set in through-hole, and the first cooling fin is arranged close to the part of circuit board with circuit board contacts.
In this way, due to, close to the corresponding position of bottom plate of metal frame, being provided with through-hole in circuit board and being provided with first in through-holes
Cooling fin, i.e. the first cooling fin and circuit board directly contact, that is to say, that and the first cooling fin and heat source directly contact, thus the
The bottom plate that the heat that light emitting source generates is directed through metal frame can be directed to except bottom plate by one cooling fin, accelerate heat
Conduction efficiency, to improve the radiating efficiency of backlight module.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application will make below to required in the embodiment of the present application
Attached drawing is briefly described, it should be apparent that, attached drawing described below is only some embodiments of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the overlooking structure diagram of the backlight module in the embodiment of the present application；
Fig. 2 is the cross section structure schematic diagram for the backlight module that the SS ' along Fig. 1 in the embodiment of the present application is intercepted；
Fig. 3 is the structural schematic diagram of the metal frame in the embodiment of the present application；
Fig. 4 is another cross section structure schematic diagram for the backlight module that the SS ' along Fig. 1 in the embodiment of the present application is intercepted；
Fig. 5 is another cross section structure schematic diagram for the backlight module that the SS ' along Fig. 1 in the embodiment of the present application is intercepted；
Fig. 6 is another overlooking structure diagram of the backlight module in the embodiment of the present application；
Fig. 7 is another overlooking structure diagram of the backlight module in the embodiment of the present application；
Fig. 8 is another cross section structure schematic diagram for the backlight module that the SS ' along Fig. 1 in the embodiment of the present application is intercepted；
Fig. 9 is another cross section structure schematic diagram for the backlight module that the SS ' along Fig. 1 in the embodiment of the present application is intercepted；
Figure 10 is the floor map of one of the embodiment of the present application display device.
Specific embodiment
It is understandable to enable the above objects, features, and advantages of the application to become apparent, below in conjunction with attached drawing and implementation
Example is described further the application.However, example embodiment can be implemented in a variety of forms, and it is not understood as limited to
Embodiment set forth herein；On the contrary, these embodiments are provided so that the application more comprehensively and completely, and by example embodiment party
The design of formula is comprehensively communicated to those skilled in the art.Identical appended drawing reference indicates same or similar knot in figure
Structure, thus repetition thereof will be omitted.The word of expression position and direction described herein, is to be with attached drawing
The explanation that example carries out, but can also make a change as needed, done change is all contained in the application protection scope.The application
Attached drawing be only used for signal relative positional relationship do not represent actual proportions.
It should be noted that elaborating detail in the following description in order to fully understand the application.But this Shen
It please can be different from other way described herein with a variety of and implement, those skilled in the art can be without prejudice in the application
Similar popularization is done in the case where culvert.Therefore the application is not limited by following public specific embodiment.Specification is subsequent to be retouched
It states to implement the better embodiment of the application, so the description is not being used for the purpose of the rule for illustrating the application
To limit scope of the present application.The protection scope of the application is as defined by the appended claims.
As previously mentioned, the problem of backlight module heat dissipation exists in the prior art, is directed to the solution of this problem in the prior art
Certainly mode is to paste graphite flake in the behind of the glue iron integral structure of backlight module, to absorb the heat of LED light generation.However, by
Across iron frame among LED light and graphite flake, so heat transfer efficiency is lower, cause heat dissipation effect bad.As it can be seen that in the prior art
There is a problem of that backlight module radiating efficiency is lower.
In consideration of it, in order to solve the problems, such as that backlight module radiating efficiency is lower, this application provides a kind of backlight module and
The backlight module and display device of the offer of the application specific embodiment is discussed in detail in display device with reference to the accompanying drawing.
Referring to Figure 1 and Fig. 2, Fig. 1 be the backlight module 00 in the embodiment of the present application overlooking structure diagram, such as Fig. 1
Shown, backlight module 00 includes: metal frame 10, the light guide plate 50 on metal frame 10, and is located at 50 incident side of light guide plate
Lamp bar 20；Fig. 2 is the schematic diagram of the section structure of the backlight module 00 on the direction SS ' in Fig. 1.
As shown in Fig. 2, backlight module 00 includes metal frame 10, lamp bar 20 and radiating subassembly 30.Wherein, backlight module 00 wraps
Metal frame 10 is included, metal frame 10 includes bottom plate 101 and the side plate 102 that 101 surrounding of bottom plate is arranged in, 102 shape of bottom plate 101 and side plate
At accommodation space.Lamp bar 20 includes circuit board 201 and light source 202, wherein and the side of bottom plate 101 is arranged in circuit board 201, and
In accommodation space.Side of the circuit board 201 far from bottom plate 101, and 201 electricity of light source 202 and circuit board is arranged in light source 202
Connection.In the specific implementation process, light source 202 can be welded on circuit board 201, i.e., light source 202 can by pad with
Circuit board 201 keeps electrical connection.In practice, light source 202 can be LED light or other light sources, in the embodiment of the present application,
It is illustrated so that light source 202 is LED light as an example.
With continued reference to Fig. 2, on the direction perpendicular to bottom plate 101, metal frame 10 with light source 202 on bottom plate 101
Orthographic projection region is provided with through-hole 103.Fig. 3 is referred to, Fig. 3 is the structural schematic diagram of metal frame 10 in the embodiment of the present application, gold
Belonging to frame 10 includes bottom plate 101 and the side plate 102 that 101 surrounding of bottom plate is arranged in, and bottom plate 101 and side plate 102 form accommodation space, example
The accommodation space that four sides add bottom surface is such as formed, to put it more simply, merely illustrating bottom surface and a side in Fig. 3.In addition, golden
Belonging to frame 10 further includes through-hole 103, and in the embodiment of the present application, through-hole 103 refers to passing through through the entire bottom plate 101 of metal frame 10
Perforation.
Continuing with referring to fig. 2, backlight module 00 further includes radiating subassembly 30, and radiating subassembly 30 includes the first cooling fin 301,
Wherein, the first cooling fin 301 is set in through-hole 103, and part and circuit board of first cooling fin 301 close to circuit board 201
201 contact settings.In this case, circuit board 201 is close to the position of metal frame 10, due to being provided with through-hole 103 and through-hole 103
In the first cooling fin 301, can use the contact with circuit board 201 close to the part of metal frame 10 and be arranged and produce light source 202
Raw heat is conducted by through-hole 103 and the first cooling fin 301, it can heat is directed through to the side of metal frame 10
Frame and bottom plate 101 and be directed to except bottom plate 101, so as to improving heat radiation efficiency.
In the embodiment of the present application, the first cooling fin 301 contacts setting with circuit board 201 close to the part of circuit board 201
Distance can be different, specifically, the difference of the material used according to the first cooling fin 301, so that the first cooling fin 301 is close
The part of circuit board 201 can correspond at a distance from the contact setting of circuit board 201 and have differences.
In another enforceable mode, if the first cooling fin 301 uses composite material, the first cooling fin 301
Setting can be partially contacted between the part and circuit board 201 of circuit board 201.That is, the first cooling fin 301 leans on
The part of nearly circuit board 201 can contact setting with circuit board 201 for part.In other words, in the embodiment of the present application first dissipate
The part of the close circuit board 201 of backing 301 can partially contact setting with circuit board 201, can also completely attach to setting, this
Apply in embodiment with no restrictions.
The backlight module 00 provided in the embodiment of the present application, can be side entering type light source, can also be with directly-down light source, this
Application does not limit the assembling mode of light source 202.The application diagram is illustrated by taking side entering type light source as an example, continuing with referring to figure
2, backlight module 00 can also include light guide plate 50, and side of the circuit board 201 far from bottom plate 101 is arranged in light guide plate 50, guide-lighting
The light-emitting surface of plate 50 intersects with the light-emitting surface of light source 202, i.e., the backlight module 00 in the embodiment of the present application, the backlight of use can
To be side entering type light source.Certainly, the light-emitting surface of light source 202 can also be parallel with the light-emitting surface of light guide plate 50, i.e., the application is implemented
In the backlight that uses of backlight module can be directly-down light source.In addition, the backlight module and straight-down negative of side entering type light source
Backlight module is provided with above-mentioned beneficial effect, will not repeat them here.
With continued reference to FIG. 2, radiating subassembly 30 in the embodiment of the present application can also include the second cooling fin 302, second
Cooling fin 302 is set to side of the bottom plate 101 far from circuit board 201, on the direction perpendicular to bottom plate 101, the second cooling fin
302 on bottom plate 101 projection and projection of the through-hole 103 on bottom plate 101 it is at least partly overlapping, and the second cooling fin 302 with
The contact setting of first cooling fin 301.In the specific implementation process, the second cooling fin 302 can attach the first cooling fin 301 and connect
Touching setting.
In the embodiment of the present application, it is connect by the part of the close circuit board 201 of the first cooling fin 301 with circuit board 201
Touching setting quickly and effectively exports the heat that light source 202 generates by through-hole 103 and the first cooling fin 301, further,
Faster heat can be conducted by the second cooling fin 302 contacted with the first cooling fin 301 again, to improve back
The radiating efficiency of optical mode group.
Specifically, in a kind of enforceable mode, the second cooling fin 302 is in the projection of bottom plate 101 and through-hole 103 bottom of at
The projection section of plate 101 is overlapping, and the second cooling fin 302 contacts setting with the first cooling fin 301, and the second cooling fin 302 only covers
Through the lead to the hole site of bottom plate 101 on base plate 101.In this way, 103 He of through-hole can will be passed through by the second cooling fin 302
Heat derived from first cooling fin 301 sheds, and the radiating efficiency of backlight module can be improved.
Specifically, in another enforceable mode, Fig. 4 is referred to, Fig. 4 is the backlight module that SS ' is intercepted along Fig. 1
The through-hole 103 through bottom plate 101, i.e., the second heat dissipation is completely covered in 00 another cross section structure schematic diagram, the second cooling fin 302
The first cooling fin 301 of piece 302 and setting in through-holes completely attaches to, also, the second cooling fin 302 is partially covered on bottom plate
On 101, specifically, the side of light source 202 is upwardly away from by the side that the second cooling fin 302 is placed perpendicular to bottom plate 101,
In this case, the heat that light source 202 generates can quickly and effectively be exported by through-hole 103 and the first cooling fin 301, then
Heat is quickly shed by the biggish heat dissipation area of the second cooling fin 302 contacted with the first cooling fin 301 again.
Specifically, referring to Fig. 5 in another enforceable mode, Fig. 5 is the backlight module that SS ' is intercepted along Fig. 1
00 another cross section structure schematic diagram, the second cooling fin 302 is in the projection of bottom plate 101 and through-hole 103 in the Projection Division of bottom plate 101
Divide and overlap, and the second cooling fin 302 and the first cooling fin 301 completely attach to and be arranged, by being arranged the second cooling fin 302 vertical
The side of light source 202 is directly upwardly away from the side of bottom plate 101, in this way, the heat that the first cooling fin 301 generates light source 202 can
Heat is shed with the second cooling fin 302 for covering bottom plate 101 by part, further, due to the second cooling fin 302
Covering bottom plate 101 is divided to further improve the radiating efficiency of backlight module to increase heat dissipation area, realize to backlight
The purpose of mould group fast cooling.
Specifically, in another enforceable mode, with continued reference to FIG. 2, the second cooling fin 302 is in bottom plate 101
Projection is all overlapping in the projection of bottom plate 101 with through-hole 103, and the second cooling fin 302 contacts setting with the first cooling fin 301,
Second cooling fin 302 all covers bottom plate 101.That is, the second cooling fin 302 is dissipated be arranged in through-hole 103 first
Backing 301 is completely covered, and absorbs the heat of the first cooling fin 301 conduction to the greatest extent.Further, since in the second cooling fin
Heat dissipation area is maximum when 302 whole covering bottom plates 101, i.e. the second cooling fin 302 will can absorb the first cooling fin 301 faster
The heat of conduction distributes, and improves the radiating efficiency of backlight module 00.
In the embodiment of the present application, the material of radiating subassembly 30 can for graphite, copper alloy, carbon copper, in copper foil at least
It is a kind of, that is to say, that the material of radiating subassembly 30 can be one of graphite, copper alloy, carbon copper, copper foil.It is being embodied
In the process, the first cooling fin 301 and the second cooling fin 302 can use identical material, or can use different materials,
For example, the material of the first cooling fin 301 be graphite, the second cooling fin 302 material be graphite；The material of radiating subassembly 30 can also
To be graphite and copper alloy, graphite, copper alloy, copper foil can also be, for example, the material of the first cooling fin 301 is copper foil and copper
The combination of alloy, the material of the second cooling fin 302 are graphite.In addition, the first cooling fin 301 and the second cooling fin 302 can be with one
Body setting, or can also be arranged with the contact of separate type, the embodiment of the present application is with no restrictions.
In the embodiment of the present application, metal frame 10 with light source 202 perpendicular to the forward projection region on the direction of bottom plate 101
The mode of through-hole 103 is arranged in domain, and a through-hole 103 can be set, be also possible to that multiple through-holes 103 are arranged.It should be noted that
In the embodiment of the present application, on the direction perpendicular to bottom plate 101, projection of the circuit board 201 on bottom plate 101 covers through-hole
103 projection on bottom plate 101, that is to say, that on the direction of vertical base plate 101, the length of circuit board 201 is greater than through-hole
103 length, in this case, on the basis of meeting radiating requirements, it can also be ensured that the original supporting role of bottom plate 101.
Specifically, in a kind of enforceable mode, referring to FIG. 6, a kind of plan structure that Fig. 6 is backlight module 00 is shown
It is intended to, in the embodiment of the present application, light source 202 is illustrated by taking LED light as an example.As shown in fig. 6, being welded with 6 on circuit board 201
A LED light (i.e. light source 202), through-hole 103 on the direction perpendicular to bottom plate 101 with light source 202 is one-to-many is correspondingly arranged, specifically
, through-hole 103 is shown in Fig. 6 and is correspondingly arranged on the direction perpendicular to bottom plate 101 with 202 a pair three of light source, i.e., in bottom plate 101
Two through-holes of upper setting, the corresponding 3 LED light setting of a through-hole 103.That is, in the embodiment of the present application, can use
Two or more LED light are correspondingly arranged the mode of a through-hole 103 through-hole 103 is arranged, such mode can be by LED
The heat that lamp generates quickly sheds, and is opened simpler.
Specifically, in another enforceable mode, referring to FIG. 7, Fig. 7 is that the another of backlight module 00 overlooks knot
Structure schematic diagram, by taking 6 LED light rearrange as an example, through-hole 103 is a pair of with light source 202 1 on the direction perpendicular to bottom plate 101
It should be arranged, i.e., 6 through-holes 103 are set on bottom plate 101, each through-hole 103 is correspondingly arranged with a LED light.I.e. through-hole 103 exists
It is arranged in a one-to-one correspondence perpendicular on the direction of bottom plate 101 with light source 202.Such mode, due to being by through-hole 103 and LED light
It is arranged in a one-to-one correspondence, so as to which the heat that each LED light generates sheds in time as soon as possible, improves backlight module
Radiating efficiency.
Further, Fig. 8 is referred to, Fig. 8 is another schematic diagram of through-hole 103 in Fig. 7, when through-hole 103 and LED light one
One when being correspondingly arranged, and the range of the setting size of through-hole 103 can be as shown in Figure 8, wherein a indicates the length of through-hole setting, b
Indicate the width of through-hole setting, wherein the value of a for example can be 0mm to 0.2mm, and numberical range herein refers to through-hole
The numberical range that length relative to LED light inside contracts.That is, the length of through-hole 0mm smaller than LED light length can arrive
Between 0.2mm.Or the length of through-hole can be set longer than the length of LED light, the value range of a arrives at this time for 0mm
0.5mm, that is to say, that if the length of setting through-hole ratio LED is long, through-hole can extend out long relative to the length of LED
Between 0mm to 0.5mm.
The value range of same reason, the width b, b of through-hole setting can be 0mm to 0.2mm, that is to say, that when logical
When the width in hole is arranged shorter than the width of LED, through-hole can inside contract 0mm to 0.2mm relative to the width of LED light.And
When the width of through-hole is arranged bigger than the width of LED, then the value range of b is 0mm to 0.5mm, that is to say, that the width of through-hole
It spends and is extended out between 0mm to 0.5mm relative to the width of LED light.
Continuing with referring to Fig. 8, i.e., on the direction for being parallel to bottom plate 101, the length of each through-hole 103 is relative to each
The length of LED light can be to inside contract 0mm to 0.2mm, can also extend out 0mm to 0.5mm, that is to say, that the length of each through-hole 103
Degree can be 0mm shorter than the length of each LED light to 0.2, alternatively, the length of each through-hole can be longer than the length of each LED light
0mm to 0.2mm.For example, the length that through-hole 103 can be set is 0.2mm shorter than the length of LED light, or through-hole can be set
103 length is 0.3mm longer than the length of LED light.That is, in the embodiment of the present application, the setting of the length of through-hole 103 can
It is long or shorter than the length of light source 202 with the length than light source 202, so that on the basis of realizing heat dissipation purpose,
It can also guarantee the supporting role of bottom plate 101.
Continuing with referring to Fig. 8, in the embodiment of the present application, on the direction perpendicular to bottom plate 101, each through-hole 103
Width can inside contract 0mm to 0.2mm relative to the width of each LED light, can also extend out 0mm to 0.5mm.For example, can set
The width for setting through-hole 103 is 0.1mm narrower than the width of LED light, or width of the width than LED light of through-hole 103 can be set
Wide 0.2mm.The size that through-hole 103 adapts to light source 202 as far as possible is set, the heat of light source 202 is effectively shed,
Improve radiating efficiency.In addition, it is necessary to explanation, in the specific implementation process, according to actual product and operational characteristic into
The specific matched design of row, in the embodiment of the present application with no restrictions.
In the embodiment of the present application, shape of the through-hole 103 on the direction for being parallel to bottom plate 101 is with light source 202 parallel
Can be in the shape on 101 direction of bottom plate it is identical, at this stage used by the shape of LED light be mostly rectangle, for example, please join
See Fig. 6 or Fig. 7, when shape of the multiple LED light for including in light source 202 on the direction for being parallel to bottom plate 101 is rectangle, then
Shape of the through-hole 103 on the direction for being parallel to bottom plate 101 is also rectangle, to accomplish that shape is adapted as far as possible.In addition, through-hole
103 shape on the direction for being parallel to bottom plate 101 can also be the other shapes such as circle, triangle, round rectangle, the application
Embodiment is with no restrictions.
It in the specific implementation process, can also include glue frame 104 in above-mentioned backlight module 00 provided by the embodiments of the present application,
Glue frame 104 connect to form accommodation space with side plate 102.Metal frame 10 and glue frame 104 can be described as glue iron frame, i.e. the embodiment of the present application
In backlight module 00 can be the application scenarios applied to glue iron frame integral structure.Wherein, glue iron frame is glue frame integral structure,
Independent injecting glue when packaged is not needed, the display device of narrow frame is more suitable for.Optionally, the material of metal frame 10 can be for not
Become rusty steel or iron.
Specifically, Fig. 9 is please referred to, Fig. 9 is another cross-section structure signal of the backlight module 00 in the embodiment of the present application
Figure.As shown in figure 9, backlight module 00 includes metal frame 10 and glue frame 104, metal frame 10 includes bottom plate 101 and side plate 102, glue
Frame 104 is connect with side plate 102, collectively constitutes accommodation space.Lamp bar 20 includes circuit board 201 and light source 202, wherein circuit board
201 are arranged in the side of bottom plate 101, and are located in accommodation space.One of circuit board 201 far from bottom plate 101 is arranged in light source 202
Side, and light source 202 is electrically connected with circuit board 201.In order to make light source 202 be converted into area source, backlight module 00 can also include
Reflector plate 40, light guide plate 50, diffusion sheet 60 and prismatic lens 70.Reflector plate 40, light guide plate 50, diffusion sheet 60 and prismatic lens 70 are all provided with
It is placed in the side of bottom plate 101, is cascading by the direction that bottom plate 101 is directed toward light source 202, and is located in accommodation space.
Further, backlight module 00 provided by the embodiments of the present application further includes colloid 105, circuit board 201 and metal frame
10 and glue frame 104 connected by colloid 105.
Specifically, in a kind of enforceable mode, the display device in the application can be narrow frame display device,
In, for the distance of 202 lateral extent frame of light source between 1.6mm to 3.0mm, i.e., the backlight module in this programme is to be suitable for narrow side
Frame display device.
Referring to FIG. 10, Figure 10 is a kind of floor map of display device of the embodiment of the present application.The embodiment of the present application
In display device include backlight module 00 (shown in dotted line in figure) that aforementioned any embodiment provides, further include and backlight mould
The display panel 80 that group 00 is arranged oppositely.
The embodiment of Figure 10 only takes the mobile phone as an example, and is illustrated to display device, it is to be understood that the embodiment of the present application
The display device of offer can be other display devices having a display function such as computer, TV, display device for mounting on vehicle, this Shen
Please this is not specifically limited.Display device provided by the embodiments of the present application has backlight module provided by the embodiments of the present application
Beneficial effect, can specifically refer to the various embodiments described above illustrating for display panel, the present embodiment is no longer superfluous herein
It states.
Backlight module in the embodiment of the present application includes metal frame, lamp bar and radiating subassembly.Wherein, metal frame, including bottom
Plate and the side plate that bottom plate surrounding is arranged in, side plate and bottom plate form accommodation space；Lamp bar is located in accommodation space, and lamp bar includes
The side of bottom plate is arranged in circuit board and light source, circuit board, and light source is arranged on circuit boards far from the side of bottom plate, with circuit board
Electrical connection；Metal frame is being provided with through-hole with the orthographic projection region on direction of the light source perpendicular to bottom plate；Radiating subassembly, including the
One cooling fin, the first cooling fin are set in through-hole, and the first cooling fin is arranged close to the part of circuit board with circuit board contacts.
In this way, circuit board is close to the position of metal frame, due to being provided with through-hole and being provided with the first cooling fin in through-holes, so logical
The first cooling fin crossed in perforative through-hole can conduct the heat that light source generates, to improve radiating efficiency.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (11)
1. a kind of backlight module characterized by comprising metal frame, lamp bar and radiating subassembly, in which:
Including bottom plate and the side plate of the bottom plate surrounding is arranged in the metal frame, and the side plate and the bottom plate, which are formed, to be held
Receive space；
The lamp bar is located in the accommodation space, and the lamp bar includes circuit board and light source, and the circuit board is arranged described
The side of bottom plate, the side on the circuit board far from the bottom plate is arranged in the light source, with the circuit board electrical connection；
Wherein, the metal frame is being provided with through-hole with the orthographic projection region on direction of the light source perpendicular to the bottom plate；
The radiating subassembly, including the first cooling fin, first cooling fin are set in the through-hole, and first heat dissipation
Piece is arranged close to the part of the circuit board with the circuit board contacts.
2. backlight module as described in claim 1, which is characterized in that the radiating subassembly further includes the second cooling fin, described
Second cooling fin is set to side of the bottom plate far from the circuit board, on the direction perpendicular to the bottom plate, described
Two cooling fins are at least partly overlapping in the projection of the bottom plate in the projection of the bottom plate and the through-hole, and second heat dissipation
Piece contacts setting with first cooling fin.
3. backlight module as claimed in claim 2, which is characterized in that on the direction perpendicular to the bottom plate, described second
Cooling fin covers the bottom plate.
4. backlight module as described in claim 1, which is characterized in that the backlight module further includes light guide plate, the leaded light
Side of the circuit board far from the bottom plate, the light-emitting surface phase of the light-emitting surface of the light guide plate and the light source is arranged in plate
It hands over.
5. backlight module as described in claim 1, which is characterized in that the through-hole is on the direction for being parallel to the bottom plate
Shape is identical in the shape being parallel on the bottom plate direction as the light source.
6. backlight module as described in claim 1, which is characterized in that the through-hole on the direction perpendicular to the bottom plate with
The light source is arranged in a one-to-one correspondence.
7. the backlight module as described in claim 1-6 is any, which is characterized in that on the direction for being parallel to the bottom plate, often
The length of a through-hole inside contracts 0mm-0.2mm relative to the length of each light source or extends out 0mm-0.5mm.
8. backlight module as described in claim 1, which is characterized in that on the direction of the vertical bottom plate, the circuit board
Projection on the bottom plate covers projection of the through-hole on the bottom plate.
9. backlight module as described in claim 1, which is characterized in that the material of the radiating subassembly is graphite, copper alloy, carbon
At least one of copper, copper foil.
10. backlight module as described in claim 1, which is characterized in that the backlight module further includes glue frame, the glue frame with
The side plate connects to form the accommodation space.
11. a kind of display device, which is characterized in that including as described in claim 1-10 is any backlight module and with the back
The display panel that optical mode group is arranged oppositely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561603.1A CN110262131A (en) | 2019-06-26 | 2019-06-26 | A kind of backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561603.1A CN110262131A (en) | 2019-06-26 | 2019-06-26 | A kind of backlight module and display device |
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| CN110262131A true CN110262131A (en) | 2019-09-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910561603.1A Pending CN110262131A (en) | 2019-06-26 | 2019-06-26 | A kind of backlight module and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113934052A (en) * | 2021-09-27 | 2022-01-14 | 惠州Tcl移动通信有限公司 | Backlight module and mobile terminal |
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Application publication date: 20190920 |