CN207927014U - A kind of FPC, lamp bar and backlight - Google Patents

A kind of FPC, lamp bar and backlight Download PDF

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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
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CN
China
Prior art keywords
fpc
pad
cabling
copper foil
back side
Prior art date
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Active
Application number
CN201820477023.5U
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Chinese (zh)
Inventor
李文宣
郑瑞建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Truly Opto Electronics Ltd
Original Assignee
Truly Opto Electronics Ltd
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Publication date
Application filed by Truly Opto Electronics Ltd filed Critical Truly Opto Electronics Ltd
Priority to CN201820477023.5U priority Critical patent/CN207927014U/en
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Publication of CN207927014U publication Critical patent/CN207927014U/en
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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

A kind of FPC, lamp bar and backlight
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.
CN201820477023.5U 2018-04-04 2018-04-04 A kind of FPC, lamp bar and backlight Active CN207927014U (en)

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

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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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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