CN206147228U - Straight following formula backlight and liquid crystal display module - Google Patents
Straight following formula backlight and liquid crystal display module Download PDFInfo
- Publication number
- CN206147228U CN206147228U CN201621234056.4U CN201621234056U CN206147228U CN 206147228 U CN206147228 U CN 206147228U CN 201621234056 U CN201621234056 U CN 201621234056U CN 206147228 U CN206147228 U CN 206147228U
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- Prior art keywords
- metal frame
- light
- direct
- type backlight
- following formula
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Abstract
The utility model discloses a straight following formula backlight and liquid crystal display module. Should straighten the following formula backlight includes the metal frame, sets up circuit board, setting on the metal frame bottom are in a plurality of LED, setting on the circuit board are in the radiating basal plate of LED one side is kept away from to the circuit board, be provided with blooming group on the metal frame. Should straighten the following formula backlight and adopt the good metal frame of heat conductivility to replace the gluey frame among the prior art, strengthen the heat dispersion of straight following formula backlight.
Description
Technical field
This utility model is related to field of backlights, more particularly to a kind of direct-light-type backlight and liquid crystal display module.
Background technology
The backlighting requirements brightness of vehicle-mounted HUD products is high, brightness range from tens of thousands of to hundreds of thousands, far beyond current TFT
Color screen backlight it is thousand of to 10,000 or so scope, conventional side entering-type LED backlight source is little due to lamp bar, it is impossible to meet vehicle-mounted
The brightness requirement of HUD products, can only adopt direct LED backlight, and in order to lift brightness, it is high-power in being typically employed to
LED and large number of, amount of localized heat aggregation is serious, and the heat that highlighted LED is produced is difficult to effectively distribute, and affects product reliability
And the life-span.
Utility model content
In order to solve above-mentioned the deficiencies in the prior art, this utility model provides a kind of direct-light-type backlight and liquid crystal display mode
Group.The direct-light-type backlight replaces glue frame of the prior art using the good metal frame of heat conductivility, enhances downward back
The heat dispersion of light source.
Technical problem to be solved in the utility model is achieved by the following technical programs：
A kind of direct-light-type backlight, including metal frame, be arranged on the metal frame bottom wiring board, be arranged on it is described
Some LED on wiring board, heat-radiating substrate of the wiring board away from LED sides is arranged on, on the metal frame light is provided with
Learn film group.
Further, the metal frame and wiring board pass through heat conduction glue bond.
Further, some pit-holes are formed with a metal frame at least side.
Further, some pit-holes mutually stagger.
Further, it is provided with an at least blooming on the exiting surface of the blooming group.
Further, it is provided with brake sack on the metal frame.
Further, some retaining walls are extended at the top of the metal frame.
Further, it is pasted with cushion pad on the inside of the retaining wall.
A kind of liquid crystal display module, including above-mentioned direct-light-type backlight.
This utility model has the advantages that：The direct-light-type backlight is replaced using the good metal frame of heat conductivility
Glue frame of the prior art, enhances the heat dispersion of direct-light-type backlight；If being formed with four sides of the metal frame
Dry pit-hole, the pit-hole can increase the surface area of metal frame, strengthen the heat-sinking capability of the metal frame.
Description of the drawings
The structure chart of the direct-light-type backlight that Fig. 1 is provided for this utility model；
The front of the direct-light-type backlight that Fig. 2 is provided for this utility model and the schematic diagram of four sides.
Specific embodiment
This utility model is described in detail with reference to the accompanying drawings and examples.
Embodiment one
As shown in figure 1, a kind of direct-light-type backlight, including metal frame 1, the circuit that is arranged on the bottom of the metal frame 1
Plate 9, some LED 4 being arranged on the wiring board 9, heat-radiating substrate 3 of the wiring board 9 away from the sides of LED 4 is arranged on,
Blooming group 5 is provided with the metal frame.
In prior art, direct-light-type backlight is used as the glue frame that the frame structure of support is generally plastic cement material, glue frame
The capacity of heat transmission is poor, and the heat-radiating substrate 3 that the radiating of whole direct-light-type backlight is only relied on wiring board 9 is completed, and heat-radiating substrate 3 is general
For aluminium base, but, with the increase of the caloric values of LED 4 in direct-light-type backlight, only relying on heat-radiating substrate 3 cannot meet
The cooling requirements of direct-light-type backlight.
Direct-light-type backlight in the technical program is using the good replacement of metal frame 1 glue of the prior art of heat conductivility
Frame, enhances the heat dispersion of direct-light-type backlight, the metal frame 1 can adopt the good metal of some heat conductivilitys or
Alloy, preferred aluminium alloy.
The metal frame 1 and wiring board 9 are bonded by heat-conducting glue 2, and the heat-radiating substrate 3 is the good metal of heat conductivility
Or alloy, preferably aluminium base, the wiring board 9 and heat-radiating substrate 3 preferably by integrated setting, to strengthen the metal
The triangular collaboration heat-sinking capability of frame 1, wiring board 9 and heat-radiating substrate 3.
Some pit-holes 11 are formed with least side of the metal frame 1, the pit-hole 11 can be arranged on the outer of side
On wall, it is also possible to be arranged on the inwall of side, be preferably provided on the outer wall of side；Preferably, as shown in Fig. 2 described
The outer wall of four sides of metal frame 1 has been respectively formed on some pit-holes 11, and the pit-hole 11 can increase the surface of metal frame 1
Product, the surface area of the metal frame 1 is bigger, and its heat dispersion is better；The pit-hole 11 can run through the side of the metal frame 1
Side, but preferably not through staying certain wall thickness.
Some pit-holes 11 mutually stagger, and the interval region between pit-hole 11 forms a kind of similar network shape reinforcement
Structure, prevents from causing the intensity decreases of metal frame 1 because pit-hole 11 is arranged.
The blooming group 5 is light guide plate or/and diffusion barrier or/and bright enhancement film or other blooming groups, in general
The blooming group 5 includes successively light guide plate, diffusion barrier, lower bright enhancement film and upper bright enhancement film, but, the type of blooming group 5
Should be depending on actual demand with quantity, should not be as limit.
It is provided with brake sack 6 on the metal frame, the brake sack 6 is preferably two-sided with viscosity, dorsad the side of LED 4
For black flour, the side towards LED 4 is black flour or the face of flour or other colors.
It can also be FPC that the wiring board 9 can be PCB.
Reflector plate can be pasted on the inwall of four sides of the metal frame 1, it is also possible to plate last layer reflective metals, than
Such as silver, to improve the brightness of backlight；In addition, the bottom surface of the stepped locations of the assembling of the metal frame 1 blooming group 5 and
Four sides can also paste one layer of reflective metals of reflector plate or plating.
Extend some retaining walls 7 at the top of the metal frame, when liquid crystal display module is assembled, for limiting the straight-down negative
Relative position between backlight and display floater；The inner side of the retaining wall 7 is pasted with cushion pad 8, prevents metal material
Retaining wall 7 damages the display floater of glass material, and the cushion pad 8 can be plastic cement or silica gel or the material such as PET or foam
Material.Further, a little glue frame can be made, little glue frame is pasted onto into the top of the metal frame 1, or in the metal
The top of frame arranges corresponding structure, and for being socketed in little glue frame, little glue frame display floater is placed.
Embodiment two
A kind of liquid crystal display module, including the direct-light-type backlight described in embodiment one.
Embodiment described above only expresses embodiment of the present utility model, and its description is more concrete and detailed, but and
Therefore the restriction to this utility model the scope of the claims can not be interpreted as, as long as the institute in the form of equivalent or equivalent transformation
The technical scheme of acquisition, all should fall within protection domain of the present utility model.
Claims (9)
1. a kind of direct-light-type backlight, it is characterised in that including metal frame, the wiring board being arranged on the metal frame bottom,
Some LED for being arranged on the wiring board, it is arranged on heat-radiating substrate of the wiring board away from LED sides, the metal frame
On be provided with blooming group.
2. direct-light-type backlight according to claim 1, it is characterised in that the metal frame and wiring board pass through heat-conducting glue
Bonding.
3. direct-light-type backlight according to claim 1, it is characterised in that the metal frame is formed with an at least side
Some pit-holes.
4. direct-light-type backlight according to claim 1, it is characterised in that some pit-holes mutually stagger.
5. direct-light-type backlight according to claim 1, it is characterised in that be provided with the exiting surface of the blooming group
An at least blooming.
6. direct-light-type backlight according to claim 1, it is characterised in that be provided with brake sack on the metal frame.
7. direct-light-type backlight according to claim 1, it is characterised in that extend some gears at the top of the metal frame
Wall.
8. direct-light-type backlight according to claim 7, it is characterised in that buffering is pasted with the inside of the retaining wall soft
Pad.
9. a kind of liquid crystal display module, it is characterised in that including arbitrary described direct-light-type backlight in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234056.4U CN206147228U (en) | 2016-11-17 | 2016-11-17 | Straight following formula backlight and liquid crystal display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234056.4U CN206147228U (en) | 2016-11-17 | 2016-11-17 | Straight following formula backlight and liquid crystal display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206147228U true CN206147228U (en) | 2017-05-03 |
Family
ID=58626654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621234056.4U Active CN206147228U (en) | 2016-11-17 | 2016-11-17 | Straight following formula backlight and liquid crystal display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206147228U (en) |
-
2016
- 2016-11-17 CN CN201621234056.4U patent/CN206147228U/en active Active
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