CN207366883U - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN207366883U CN207366883U CN201721059816.7U CN201721059816U CN207366883U CN 207366883 U CN207366883 U CN 207366883U CN 201721059816 U CN201721059816 U CN 201721059816U CN 207366883 U CN207366883 U CN 207366883U
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- wall
- backlight module
- circuit board
- printed circuit
- light guide
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Abstract
It the utility model is related to a kind of backlight module and display device.Wherein, backlight module includes light guide plate and backlight, and the side of light guide plate is incidence surface, and backlight includes metal base printed circuit board and LED lamp bead.Metal base printed circuit board is provided with the first wall and the second wall, and the first wall and the second wall are connected with each other, and the medial surface of the first wall and the incidence surface of light guide plate are oppositely arranged, and light guide plate is located at the top of the second wall.LED lamp bead is arranged at the medial surface of the first wall and is electrically connected with the first wall, and the light-emitting area of LED lamp bead and the incidence surface of light guide plate are oppositely arranged.Backlight module provided by the utility model and display device, realize the technique effect of good heat radiating, solve the technical problem that heat dissipation effect existing for existing backlight module is poor and service life is short.In addition, the technical problem that the parts for also solving backlight module are more, thickness is big, production process is more and production efficiency is low, reaches the technique effect for improving backlight module production efficiency.
Description
Technical field
It the utility model is related to technical field of liquid crystal display, more particularly to a kind of backlight module and display device.
Background technology
As the continuous development of science and technology, people are increasingly frivolous to the volume needs of display.Traditional cathode-ray tube is shown
Show device (Cathode Ray Tube, CRT) although there is its advantage, its volume is big, and power consumption, therefore, liquid crystal display,
The flat-panel screens such as plasma display panel and electroluminescent display has become the display of the market mainstream gradually.Wherein, liquid crystal
Show that device due to having the advantages that operation voltage is low, radiationless, light-weight and small, has been increasingly becoming the mainstream of monitor market
Product.Liquid crystal cell in liquid crystal display device structure does not shine, it is necessary to provide light source using backlight module in itself.Backlight mould
Group can be divided into down straight aphototropism mode set and side entrance back module according to the position relationship between backlight and light guide plate.Under straight
The backlight of formula backlight module is located at the dorsal part of light guide plate or diffuser plate, and the backlight of side entrance back module is arranged at light guide plate
Sidepiece, by light guide plate total reflection and it is scattered after, can further be spread through diffuser plate, form area source, light is uniform
Ground is irradiated on the display panel on front side of backlight module.
Side entrance back module generally use light emitting diode (Light Emitting Diode, LED) is used as backlight
Primary light source, in order to ensure the stability of LED lamp bead and its service life, the heat dissipation to LED lamp bead has higher requirement.Such as Fig. 1
Shown, in order to realize the heat dissipation of LED lamp bead 122 ', existing way is that LED lamp bead 122 ' is installed on backlight substrate 124 '
On, then will be fixed on by heat-conducting glue on aluminium base heat sink 13 ', aluminium base heat sink 13 ' is finally screwed in backboard
On 11 ' bottom plate 111 ', the production process of backlight module 1 ' is more and production efficiency is low.
In addition, although the partial heat in LED lamp bead 122 ' can be passed sequentially through heat-conducting glue, aluminium base by existing radiator structure
Heat sink 13 ' and backboard 11 ' export, but this overall heat-conducting mode belongs to indirect heat conducting mode, the degree of transitivity of process
Compare more, thermal resistance is bigger, causes the globality heat dissipation effect of backlight module 1 ' poor, so that the LED of place in high temperature environments
Lamp bead 122 ' is easily damaged, and reduces the service life of backlight module 1 '.
In addition, the parts that existing indirect heat conducting mode is related to are more, backlight substrate 124 ', aluminium base heat sink 13 '
And backboard 11 ' stacks gradually, cause the thickness of backlight module 1 ' larger.Wherein, as shown in Fig. 2, existing backlight substrate
124 ' along the thickness direction (h directions as shown in Figure 1) of backlight module 1 ' except LED lamp bead 122 ' to be accommodated, also to hold
Receive the connection circuit 123 ' and connector 125 ' being electrically connected with LED lamp bead 122 ', cause backlight substrate 124 ' along backlight module 1 '
Thickness direction on size it is larger so that backlight module 1 ' it is overall thickness it is larger.
Utility model content
In view of this, the purpose of this utility model is that proposing a kind of backlight module and display device, for solving tradition
Backlight module heat dissipation effect is poor, service life is short and the technical problem of low production efficiency.
For this purpose, the utility model uses following technical scheme：
A kind of backlight module, including：
Light guide plate, its side are incidence surface；
Backlight, the backlight include：
Metal base printed circuit board, is provided with the first wall and the second wall, and first wall and second wall are connected with each other,
The incidence surface of the medial surface and the light guide plate of first wall is oppositely arranged, and the light guide plate is located at the upper of second wall
Side；And
LED lamp bead, is arranged at the medial surface of first wall and is electrically connected with first wall, the hair of the LED lamp bead
Smooth surface and the incidence surface of the light guide plate are oppositely arranged.
Further, further include：
Backboard, has been enclosed inner cavity, and the light guide plate is contained in the inner cavity with backlight, second wall with
The bottom plate of the backboard abuts against.
Further, first wall and second wall are laid with connection circuit, the LED lamp bead and the connection
Circuit is electrically connected, to light the LED lamp bead.
Further, first wall and second wall are perpendicular.
Further, second wall includes：
Metal wire, is arranged at the one side that second wall is abutted against with the bottom plate, the metal wire and the bottom plate phase
Abut.
Further, the metal base printed circuit board is additionally provided with：
Groove is bent, is configured on the first face of the metal base printed circuit board, positioned at first wall and described second
The junction of wall.
Further, the cross sectional shape of the bending groove is U-shaped, L-type or arc.
Further, the metal base printed circuit board is aluminum-base printing circuit board, copper-based printed circuit board (PCB) or base steel print
Printed circuit board.
Further, the thickness of the metal base printed circuit board is not less than 0.8mm.
A kind of display device, including backlight module as described above.
The beneficial effects of the utility model are：
The utility model provides backlight module and display device.Backlight module and display device include light guide plate and backlight
Source, backlight include metal base printed circuit board and LED lamp bead.Wherein, metal base printed circuit board is provided with what is be connected with each other
First wall and the second wall, the medial surface of the first wall and the incidence surface of light guide plate are oppositely arranged, and light guide plate is located at the top of the second wall.
LED lamp bead is arranged at the medial surface of the first wall and is electrically connected with the first wall, the light-emitting area of LED lamp bead and the incidence surface phase of light guide plate
To setting.Backlight module provided by the utility model and display device, that are provided with by using in metal base printed circuit board
This connected the first wall and the second wall, the technological means of LED lamp bead is electrically connected with the first wall, realizes and LED lamp bead shines
Caused heat, the technology that good heat radiating on the parts being connected is directly delivered to by metal base printed circuit board are imitated
Fruit, solves the technical problem that heat dissipation effect existing for existing backlight module is poor and service life is short.
In addition, backlight module provided by the utility model and display device, by taking backlight to be printed including Metal Substrate
The technological means of circuit board and LED lamp bead as backlight module light emitting source, compared with traditional backlight module, the utility model
The structure of the backlight module of offer is more simple, solves of the prior art, and the parts of backlight module are more, thickness is big, raw
The technical problem that process is more and production efficiency is low is produced, reaches the technique effect for improving backlight module production efficiency.
Brief description of the drawings
Fig. 1 is the partial structural diagram of backlight module of the prior art；
Fig. 2 is the partial structural diagram of backlight in the prior art；
Fig. 3 is the partial structural diagram of backlight module provided by the utility model；
Fig. 4 is the backsight partial structural diagram of the backlight of backlight module provided by the utility model；
Fig. 5 is the side view of backlight provided by the utility model.
In figure：
1 '-backlight module；
11 '-backboard；13 '-aluminium base heat sink；
111 '-bottom plate；122 '-LED lamp bead；123 '-connection circuit；124 '-backlight substrate；125 '-connector；
1- backlight modules；
11- backboards；12- backlights；13- light guide plates；
111- bottom plates；121- metal base printed circuit boards；122-LED lamp beads；123- connection circuits；
The first walls of 1211-；The second walls of 1212-；1213- bends groove；
12121- metal wires.
Embodiment
In order to enable those skilled in the art to better understand the technical solutions of the present invention, below in conjunction with the accompanying drawings and pass through
Embodiment further illustrates the technical solution of the utility model.
As shown in Fig. 3~Fig. 5, backlight module 1 provided in this embodiment includes light guide plate 13 and backlight 12, light guide plate 13
Side be C faces (i.e. incidence surface), backlight 12 includes metal base printed circuit board 121 and LED lamp bead 122.Wherein, such as Fig. 5
Shown, metal base printed circuit board 121 is provided with the first wall 1211 and the second wall 1212 being connected with each other, the A of the first wall 1211
Face (i.e. medial surface) and the C faces of light guide plate 13 are oppositely arranged, and light guide plate 13 is located at the top of the second wall 1212.LED lamp bead 122 is set
It is placed in the medial surface of the first wall 1211 and is electrically connected with the first wall 1211, the light-emitting area of LED lamp bead 122 enters light with light guide plate 13
Face is oppositely arranged.
Backlight module 1 provided by the utility model, is connected with each other by using being provided with metal base printed circuit board 121
The first wall 1211 and the second wall 1212, the technological means of LED lamp bead 122 is electrically connected with the first wall 1211, is realized LED
Heat caused by lamp bead 122 is luminous, the parts being connected are directly delivered to by metal base printed circuit board 121, are realized
The technique effect of good heat radiating, solves the technical problem that heat dissipation effect existing for existing backlight module 1 is poor and service life is short.
In addition, backlight module 1 provided by the utility model, by taking backlight 12 to include metal base printed circuit board
121 and the technological means of the LED lamp bead 122 as 1 light emitting source of backlight module, compared with traditional backlight module 1, this practicality is new
The structure for the backlight module 1 that type provides is more simple, solves of the prior art, and the parts of backlight module 1 are more, thickness
Greatly, the technical problem that production process is more and production efficiency is low, reaches the technique effect for improving 1 production efficiency of backlight module.
In the present embodiment, backlight module 1 further includes backboard 11, and backboard 11 has been enclosed inner cavity, light guide plate 13 and the back of the body
Light source 12 houses in the lumen, and the bottom plate 111 of the second wall 1212 and backboard 11 abuts against, the heat produced from LED lamp bead 122
Amount can be directly delivered on backboard 11 by metal base printed circuit board 121, realize the direct transmission of heat, solve existing
The technical problem that heat dissipation effect present in backlight module 1 ' is poor and service life is short.
In the present embodiment, the first wall 1211 and the second wall 1212 are laid with connection circuit 123, and LED lamp bead 122 is with connecting
Connect circuit 123 to be electrically connected, to lightening LED lamp pearl 122.By the way that part connection circuit 123 is arranged on the second wall 1212
Technological means, size of first wall 1211 along I directions (as shown in Figure 5) can be reduced, reach and reduce backlight 12 along I directions
The technique effect of size, solves the larger technical problem of the thickness of the entirety of backlight module 1 ' in the prior art.
In the present embodiment, the first wall 1211 and the second wall 1212 are perpendicular, the side wall phase of the first wall 1211 and backboard 11
Abut, the bottom plate 111 of the second wall 1212 and backboard 11 abuts against, and realizes the good installation of metal base printed circuit board 121, places
It is and fixed.In addition, as shown in figure 4, be provided with metal wire 12121 in the one side that the second wall 1212 is abutted against with bottom plate 111, lead to
The technological means that metal wire 12121 is abutted against with bottom plate 111 is crossed, metal base printed circuit board 121 is preferably by LED lamp bead 122
On the heat transfer that distributes on backboard 11.Specifically, metal wire 12121 can be copper wire, aluminum steel, silver wire etc., generally select
Large area covers copper wire, and the heat conductivility of copper wire is good and cost-effective.
The molding mode of metal base printed circuit board 121 as shown in Figure 5 is as follows：First in metal base printed circuit board
Bending groove 1213 is offered on the B faces (i.e. the first face) of 121 raw material plate, then it is curved to raw material plate progress at groove 1213 bending
Folding, so as to obtain the metal base printed circuit board 121 for being provided with the first wall 1211 being connected and the second wall 1212, and bends groove
1213 positioned at the junction of the first wall 1211 and the second wall 1212.Set bending groove 1213 to be used for realization before bending technique to determine
Position, ensures to obtain the first wall 1211 of predetermined altitude, and the realization of bending technique is more prone to.Specifically, bending groove
1213 cross sectional shape for U-shaped, L-type, arc etc., all can realize bending technique bending groove 1213 all the application's
Within protection domain.
In the present embodiment, metal base printed circuit board 121 is aluminum-base printing circuit board, copper-based printed circuit board (PCB) or base steel
Printed circuit board (PCB).Select optimal case of the aluminum-base printing circuit board as the present embodiment, compared with base steel printed circuit board (PCB), aluminium base
The heat-conducting effect of printed circuit board (PCB) is more preferable；Compared with copper-based printed circuit board (PCB), the price of aluminum-base printing circuit board is lower, but leads
Thermal effect is not much different, and the sexual valence of aluminum-base printing circuit board is higher.In addition, the density ratio copper and steel of aluminium are low, be conducive to subtract
Light weight, and the bending effect of aluminium is relatively good, can preferably carry out bending technique.
In the present embodiment, the thickness of metal base printed circuit board 121 is not less than 0.8mm.Due to metal base printed circuit
Plate 121 needs to lay connection circuit 123 above and bending groove is opened at the back side, so thickness had better not be less than 0.8mm, otherwise can go out
Now the danger of open circuit occurs for connection circuit 123.Additionally it is possible to prevent from setting the position of bending groove 1213 to be broken, improve
The hardness and intensity of metal base printed circuit board 121, prevent to deform.But metal base printed circuit board 121 is taken into account again
Cost and overall backlight module 1 thickness, the thickness of metal base printed circuit board 121 is preferably no more than 1mm.
Display device provided in this embodiment, including backlight module 1 as mentioned above, display device can be tablet electricity
Brain, display screen, mobile phone etc., for solving that traditional heat dissipation effect of backlight module 1 ' is poor, service life is short and low production efficiency
Technical problem.
It should be strongly noted that the display device in the present embodiment belongs to same technology structure with above-mentioned backlight module 1
Think.So the detail content of not detailed description in a display device, refers to the backlight module 1 in the present embodiment, herein no longer
Repeat.
Note that have been shown and described above the utility model basic principle and main feature and the utility model it is excellent
Point.It should be understood by those skilled in the art that the utility model is not limited to the embodiments described above, the above embodiment and say
The principle for simply illustrating the utility model described in bright book, on the premise of not departing from the spirit and scope of the utility model, this
Utility model also has various changes and modifications, and these various changes and improvements fall within the scope of the claimed invention,
The claimed scope of the utility model is defined by the appending claims and its equivalent thereof.
Claims (10)
- A kind of 1. backlight module, it is characterised in that including：Light guide plate (13), its side are incidence surface；Backlight (12), the backlight (12) include：Metal base printed circuit board (121), is provided with the first wall (1211) and the second wall (1212), first wall (1211) and Second wall (1212) is connected with each other, and the medial surface of first wall (1211) is opposite with the incidence surface of the light guide plate (13) Set, the light guide plate (13) is located at the top of second wall (1212)；AndLED lamp bead (122), is arranged at the medial surface of first wall (1211) and is electrically connected with first wall (1211), institute The light-emitting area and the incidence surface of the light guide plate (13) for stating LED lamp bead (122) are oppositely arranged.
- 2. backlight module according to claim 1, it is characterised in that further include：Backboard (11), has been enclosed inner cavity, the light guide plate (13) is contained in the inner cavity with backlight (12), described Second wall (1212) and the bottom plate (111) of the backboard (11) abut against.
- 3. backlight module according to claim 1, it is characterised in that first wall (1211) and second wall (1212) connection circuit (123) is laid with, the LED lamp bead (122) is electrically connected with the connection circuit (123), to light The LED lamp bead (122).
- 4. according to claims 1 to 3 any one of them backlight module, it is characterised in that first wall (1211) with it is described Second wall (1212) is perpendicular.
- 5. backlight module according to claim 2, it is characterised in that second wall (1212) includes：Metal wire (12121), is arranged at the one side that second wall (1212) abuts against with the bottom plate (111), the metal Line (12121) is abutted against with the bottom plate (111).
- 6. according to claims 1 to 3 any one of them backlight module, it is characterised in that：The metal base printed circuit board (121) it is additionally provided with：Groove (1213) is bent, is configured on the first face of the metal base printed circuit board (121), positioned at first wall (1211) with the junction of second wall (1212).
- 7. backlight module according to claim 6, it is characterised in that it is described bending groove (1213) cross sectional shape for it is U-shaped, L-type or arc.
- 8. according to claims 1 to 3 any one of them backlight module, it is characterised in that the metal base printed circuit board (121) it is aluminum-base printing circuit board, copper-based printed circuit board (PCB) or base steel printed circuit board (PCB).
- 9. according to claims 1 to 3 any one of them backlight module, it is characterised in that the metal base printed circuit board (121) thickness is not less than 0.8mm.
- 10. a kind of display device, it is characterised in that including such as claim 1~9 any one of them backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721059816.7U CN207366883U (en) | 2017-08-23 | 2017-08-23 | A kind of backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721059816.7U CN207366883U (en) | 2017-08-23 | 2017-08-23 | A kind of backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207366883U true CN207366883U (en) | 2018-05-15 |
Family
ID=62422395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721059816.7U Active CN207366883U (en) | 2017-08-23 | 2017-08-23 | A kind of backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207366883U (en) |
-
2017
- 2017-08-23 CN CN201721059816.7U patent/CN207366883U/en active Active
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