CN207927014U - A kind of FPC, lamp bar and backlight - Google Patents
A kind of FPC, lamp bar and backlight Download PDFInfo
- Publication number
- CN207927014U CN207927014U CN201820477023.5U CN201820477023U CN207927014U CN 207927014 U CN207927014 U CN 207927014U CN 201820477023 U CN201820477023 U CN 201820477023U CN 207927014 U CN207927014 U CN 207927014U
- Authority
- CN
- China
- Prior art keywords
- fpc
- pad
- cabling
- copper foil
- back side
- 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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Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052802 copper Inorganic materials 0.000 claims abstract description 25
- 239000010949 copper Substances 0.000 claims abstract description 25
- 239000011889 copper foil Substances 0.000 claims abstract description 25
- 230000000875 corresponding Effects 0.000 claims abstract description 22
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 description 10
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 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
- 239000003292 glue Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000003287 optical Effects 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 FPC, lamp bar and backlights.The front copper foil of the FPC includes several pads, and 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 FPC has good heat sinking function.
Description
Technical field
The utility model is related to a kind of wiring board art more particularly to FPC, lamp bar and 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, a kind of FPC of the utility model offer, lamp bar and backlight.The FPC has
There is good heat sinking function.
Technical problem to be solved in the utility model is achieved by the following technical programs：
A kind of FPC, front copper foil include several pads, and its front protecting film is in the position corresponding to the pad
On offer dew copper windowing, back copper foil includes radiating copper area, what the radiating copper area was covered in corresponding to an at least pad
On position.
Further, back protection film offers heat dissipation windowing in the position corresponding to the radiating copper area.
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.
A kind of lamp bar, including above-mentioned FPC and several LED, a LED correspondence are welded on a pad.
A kind of backlight, including above-mentioned lamp bar.
The utility model has the advantages that：The FPC utilizes the spy in its back copper foil with large stretch of white space
The back copper foil is fabricated to the radiating copper area of large area covering, utilizes copper by point on the position corresponding to the pad
High-termal conductivity radiates, and 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.
Embodiment one
As shown in Figs. 1-3, a kind of FPC, including set gradually back protection film 11, back copper foil 12, substrate 13, front
Copper foil 14 and front protecting film 15, the front copper foil 14 include several pads 141, and the front protecting film 15 is corresponding to institute
It states and offers dew copper windowing 151 on the position of pad 141, the back copper foil 12 includes radiating copper area 121, the radiating copper area
121 are covered in corresponding on at least position of a pad 141.
In general, the FPC of lamp bar is two-layer wiring structure, only has some simple cablings in back copper foil 12, greatly
Part 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 FPC, which is utilized in its back copper foil 12, has the characteristics that large stretch of white space, in the position corresponding to the pad 141
It sets, the back copper foil 12 is fabricated to the radiating copper area 121 of large area covering, is dissipated using the high-termal conductivity of copper
Heat both increases heat dissipation area, also improves radiating efficiency.
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.
Embodiment two
A kind of lamp bar, including the FPC described in embodiment one and several LED, a LED correspondence are welded on a pad
On 141.
Embodiment three
As shown in fig. 6, a kind of backlight, including the lamp bar described in embodiment two.
The backlight further includes metal frame 3 and light guide plate 4, and the light guide plate 4 and lamp bar are arranged in the metal frame 3,
Wherein, 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 in the metal frame 3.
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.
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 (8)
1. a kind of FPC, front copper foil includes several pads, and its front protecting film is on the position corresponding to the pad
Offer dew copper windowing, which is characterized in that its back copper foil includes radiating copper area, and the radiating copper area is covered in corresponding at least
On the position of one pad.
2. FPC according to claim 1, which is characterized in that its back protection film is in the position corresponding to the radiating copper area
It sets and offers heat dissipation windowing.
3. FPC according to claim 1 or 2, which is characterized in that the front copper foil further includes front cabling and golden hand
Refer to, the front cabling connects the pad and its corresponding golden finger.
4. FPC according to claim 3, which is characterized in that the radiating copper area is covered on the entire back side.
5. FPC according to claim 1 or 2, which is characterized in that the front copper foil further includes front cabling and golden hand
Refer to, the back copper foil further includes back side cabling；The back side cabling and/or front cabling connect the pad and its corresponding
Golden finger.
6. FPC according to claim 5, which is characterized in that the radiating copper area be covered in addition to the back side cabling it
On the outer entire back side.
7. a kind of lamp bar, which is characterized in that corresponded to including any FPC and several LED in claim 1-6, a LED
It is welded on a pad.
8. a kind of backlight, which is characterized in that including the lamp bar described in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820477023.5U CN207927014U (en) | 2018-04-04 | 2018-04-04 | A kind of FPC, lamp bar and backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820477023.5U CN207927014U (en) | 2018-04-04 | 2018-04-04 | A kind of FPC, lamp bar and backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207927014U true CN207927014U (en) | 2018-09-28 |
Family
ID=63597023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820477023.5U Active CN207927014U (en) | 2018-04-04 | 2018-04-04 | A kind of FPC, lamp bar and backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207927014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568964A (en) * | 2019-09-12 | 2019-12-13 | 业成科技（成都）有限公司 | Sensor assembly, preparation method thereof, bonding structure and touch panel module |
-
2018
- 2018-04-04 CN CN201820477023.5U patent/CN207927014U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568964A (en) * | 2019-09-12 | 2019-12-13 | 业成科技（成都）有限公司 | Sensor assembly, preparation method thereof, bonding structure and touch panel module |
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