CN207924327U - A kind of backlight - Google Patents
A kind of backlight Download PDFInfo
- Publication number
- CN207924327U CN207924327U CN201820477021.6U CN201820477021U CN207924327U CN 207924327 U CN207924327 U CN 207924327U CN 201820477021 U CN201820477021 U CN 201820477021U CN 207924327 U CN207924327 U CN 207924327U
- Authority
- CN
- China
- Prior art keywords
- pad
- guide plate
- lamp bar
- cabling
- light guide
- 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.)
- Active
Links
- 239000011889 copper foil Substances 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052802 copper Inorganic materials 0.000 claims abstract description 24
- 239000010949 copper Substances 0.000 claims abstract description 24
- 230000000875 corresponding Effects 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 2
- 239000010931 gold Substances 0.000 claims 2
- 229910052737 gold Inorganic materials 0.000 claims 2
- 238000003466 welding Methods 0.000 description 10
- 230000003287 optical Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Abstract
The utility model discloses a kind of backlights; including metal frame, lamp bar and light guide plate; the light guide plate and lamp bar are arranged in the metal frame; the lamp bar is located at the incident side of the light guide plate and the back side of its FPC is pasted onto in the metal frame; the front copper foil of the FPC includes several pads; its front protecting film offers dew copper windowing on the position corresponding to the pad, and back copper foil includes radiating copper area, and the radiating copper area is covered in corresponding on at least position of a pad.The backlight has good heat sinking function.
Description
Technical field
The utility model is related to field of backlights more particularly to a kind of backlights.
Background technology
Backlight is the important composition component of liquid crystal module, and luminous energy is converted electric energy to by LED, converted in energy
Cheng Zhong, LED will produce a large amount of thermal energy, and the inside of backlight is relatively closed, if thermal energy can not distribute in time influences whether lamp
The performance of item.
Utility model content
In order to solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of backlight, has good heat dissipation work(
Energy.
Technical problem to be solved in the utility model is achieved by the following technical programs：
A kind of backlight, including metal frame, lamp bar and light guide plate, the light guide plate and lamp bar are arranged in the metal frame
Interior, the lamp bar is located at the incident side of the light guide plate and the back side of its FPC is pasted onto in the metal frame, and the FPC is just
Face copper foil includes several pads, and front protecting film offers dew copper windowing, the back side on the position corresponding to the pad
Copper foil includes radiating copper area, and the radiating copper area is covered in corresponding on at least position of a pad.
Further, the FPC of the lamp bar is pasted onto by heat-conducting glue on the bottom plate or side wall of the metal frame.
Further, the lamp bar further includes several LED, and a LED correspondence welds together on pad.
Further, the back protection film of the FPC offers heat dissipation in the position corresponding to the radiating copper area and opens
Window.
Further, the front copper foil further includes front cabling and golden finger, and the front cabling connects the pad
And its corresponding golden finger.
Further, the radiating copper area is covered on the entire back side.
Further, the front copper foil further includes front cabling and golden finger, and the back copper foil further includes that the back side is walked
Line；The back side cabling and/or front cabling connect the pad and its corresponding golden finger.
Further, the radiating copper area is covered on the entire back side other than the back side cabling.
Further, an at least optical film is provided on the light-emitting surface of the light guide plate, and/or, the light guide plate is separate
It is provided with reflectance coating in the one side of light-emitting surface.
Further, it is provided with anti-dazzling screen on the light-emitting surface of the backlight.
The utility model has the advantages that：The backlight is large stretch of empty using having in its back copper foil of its FPC
The back copper foil is fabricated to the radiating copper of large area covering by the characteristics of white region on the position corresponding to the pad
Area is radiated using the high-termal conductivity of copper, both increases heat dissipation area, also improves radiating efficiency.
Description of the drawings
Fig. 1 is the front schematic view of FPC provided by the utility model；
Fig. 2 is the schematic rear view of FPC provided by the utility model；
Fig. 3 is the A-A sectional views of FPC shown in FIG. 1；
Fig. 4 is enlarged drawing at the B of FPC shown in FIG. 1；
Fig. 5 is the C-C sectional views of FPC shown in Fig. 4；
Fig. 6 is the schematic diagram of backlight provided by the utility model.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in fig. 6, a kind of backlight, including metal frame 3, lamp bar and light guide plate 4, the light guide plate 4 and lamp bar are arranged
In the metal frame 3, the lamp bar is located at the incident side of the light guide plate 4 and the back side of its FPC 1 is pasted onto the metal
On frame 3.
As shown in Figs. 1-3, the FPC 1 includes the back protection film 11 set gradually, back copper foil 12, substrate 13, just
Face copper foil 14 and front protecting film 15, the front copper foil 14 include several pads 141, the front protecting film 15 corresponding to
Dew copper windowing 151 is offered on the position of the pad 141, the back copper foil 12 includes radiating copper area 121, the radiating copper
Area 121 is covered in corresponding on at least position of a pad 141.
In general, the FPC 1 of lamp bar is two-layer wiring structure, only has some simple cablings in back copper foil 12,
Most of is all white space, and the position of these white spaces exactly corresponds to the pad in front copper foil 14 for welding LED
141。
The backlight in the back copper foil 12 of its FPC 1 using having the characteristics that large stretch of white space, corresponding to described
On the position of pad 141, the back copper foil 12 is fabricated to the radiating copper area 121 of large area covering, utilizes the high heat conduction of copper
Property radiates, and has both increased heat dissipation area, has also improved radiating efficiency.
Preferably, the FPC 1 of the lamp bar is pasted onto by heat-conducting glue on the bottom plate or side wall of the metal frame 3.
The lamp bar further includes several LED, and a LED correspondence is welded on a pad 141.
Preferably, the back protection film 11 offers heat dissipation windowing in the position corresponding to the radiating copper area 121
111, to accelerate the transmission and diverging of thermal energy.
In one embodiment, the front copper foil 14 further includes front cabling and golden finger 142, the front cabling connection
The pad 141 and its corresponding golden finger 142.In the embodiment, all pads 141 and its corresponding golden finger 142 are logical
The front cabling connection is crossed, at this point, the radiating copper area 121 is preferably overlaid on the entire back side.
In another embodiment, the front copper foil 14 further includes front cabling and golden finger 142, the back copper foil 12
It further include back side cabling；The back side cabling and/or the connection pad 141 and its corresponding golden finger 142.The embodiment
In, at least partly pad 141 and its corresponding golden finger 142 are connected by the back side cabling or by the back side cablings
Be combined connection with front cabling, at this point, the radiating copper area 121 be preferably overlaid at it is whole other than the back side cabling
On a back side.
In addition, with the development of automation, equipment pressure welding gradually has been transitioned by human weld for the welding of lamp bar,
In equipment bond technology, the pressure head of pressure welding device is easy to be pressed onto the golden finger 142 on FPC, and the golden finger 142 is caused to occur
The unfavorable condition of fracture.
As shown in Figures 4 and 5, the front protecting film 15 offers welding on the position corresponding to the golden finger 142
Windowing 153, and preferably, the front protecting film 15 has extended to form support portion 152 to the both sides of the welding windowing 153.
The FPC adds the support portion 152 on the both sides in 153 regions of the welding windowing, and the support portion 152 is higher than
Golden finger 142 in the welding windowing 153, in equipment bond technology, the pressure head of pressure welding device can only be pressed in the support
In portion 152, without the golden finger 142 being pressed onto in the welding windowing 153, it is ensured that the stability and yields of lamp bar.
Preferably, the support portion 152 extends to matched with the edge termination of the golden finger 142.
An at least optical film is additionally provided on the light-emitting surface of the light guide plate 4, generally comprise the diffusion barrier set gradually, under
Bright enhancement film and upper bright enhancement film；The light guide plate 4 is additionally provided with reflectance coating in the one side far from light-emitting surface.
It is additionally provided with anti-dazzling screen 5 on the light-emitting surface of the backlight, defines light extraction region for shading, the anti-dazzling screen 5 is viscous
It is attached in the metal frame 3.
The embodiment of the utility model above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot it therefore be interpreted as the limitation to the utility model patent range, as long as using the form institute of equivalent substitution or equivalent transformation
The technical solution of acquisition, shall fall within the scope of the present invention.
Claims (10)
1. a kind of backlight, including metal frame, lamp bar and light guide plate, the light guide plate and lamp bar are arranged in the metal frame,
The lamp bar is located at the incident side of the light guide plate and the back side of its FPC is pasted onto in the metal frame, which is characterized in that described
The front copper foil of FPC includes several pads, and front protecting film offers dew copper windowing on the position corresponding to the pad,
Its back copper foil includes radiating copper area, and the radiating copper area is covered in corresponding on at least position of a pad.
2. backlight according to claim 1, which is characterized in that the FPC of the lamp bar is pasted onto described by heat-conducting glue
On the bottom plate or side wall of metal frame.
3. backlight according to claim 1 or 2, which is characterized in that the lamp bar further includes several LED, one LED pairs
It should weld together on pad.
4. backlight according to claim 1, which is characterized in that the back protection film of the FPC is dissipated corresponding to described
Heat dissipation windowing is offered on the position in the areas Re Tong.
5. backlight according to claim 1 or 4, which is characterized in that the front copper foil further includes front cabling and gold
Finger, the front cabling connect the pad and its corresponding golden finger.
6. backlight according to claim 5, which is characterized in that the radiating copper area is covered on the entire back side.
7. backlight according to claim 1 or 4, which is characterized in that the front copper foil further includes front cabling and gold
Finger, the back copper foil further include back side cabling；The back side cabling and/or front cabling connect the pad and its correspondence
Golden finger.
8. backlight according to claim 7, which is characterized in that the radiating copper area is covered in addition to the back side cabling
Except the entire back side on.
9. backlight according to claim 1, which is characterized in that be provided with an at least light on the light-emitting surface of the light guide plate
Film is learned, and/or, the light guide plate is provided with reflectance coating in the one side far from light-emitting surface.
10. backlight according to claim 1, which is characterized in that be provided with anti-dazzling screen on the light-emitting surface of the backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820477021.6U CN207924327U (en) | 2018-04-04 | 2018-04-04 | A kind of backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820477021.6U CN207924327U (en) | 2018-04-04 | 2018-04-04 | A kind of backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207924327U true CN207924327U (en) | 2018-09-28 |
Family
ID=63597159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820477021.6U Active CN207924327U (en) | 2018-04-04 | 2018-04-04 | A kind of backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207924327U (en) |
-
2018
- 2018-04-04 CN CN201820477021.6U patent/CN207924327U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |