CN210274699U - Continuous low-voltage-drop lighting flexible circuit board - Google Patents
Continuous low-voltage-drop lighting flexible circuit board Download PDFInfo
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- CN210274699U CN210274699U CN201920744188.9U CN201920744188U CN210274699U CN 210274699 U CN210274699 U CN 210274699U CN 201920744188 U CN201920744188 U CN 201920744188U CN 210274699 U CN210274699 U CN 210274699U
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- 239000010410 layer Substances 0.000 claims abstract description 163
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003292 glue Substances 0.000 claims abstract description 28
- 239000011241 protective layer Substances 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 18
- 239000011889 copper foil Substances 0.000 claims description 16
- 229910000679 solder Inorganic materials 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 12
- 238000009713 electroplating Methods 0.000 abstract description 8
- 239000006071 cream Substances 0.000 abstract description 5
- 238000005286 illumination Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract description 3
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to a continuous low pressure drop's illumination flexible circuit board, its top-down is equipped with positive protective layer in proper order, first circuit layer, first insulation glue film, second circuit layer, second insulation glue film, third circuit layer and back protective layer, be equipped with first tin hole of leading between first circuit layer and the first insulation glue film, first tin downthehole packing that leads has the tin cream, be equipped with between second circuit layer and the second insulation glue film and lead the tin hole with the coaxial communicating second in first tin hole of leading, the second is led the tin downthehole packing and is had the tin cream, first circuit layer, first insulation glue film, second circuit layer, second insulation glue film, third circuit layer pressfitting forms a continuous overall structure. The utility model discloses can solve traditional conducting structure who electroplates the via hole and appear cracked risk when buckling easily, change traditional electroplating process and make the circuit board in succession infinitely long, promote the quality of the efficiency of pasting the device, the performance is more stable, reliable.
Description
Technical Field
The utility model relates to a field of flexible circuit board, more specifically say, relate to a continuous low pressure drop's illumination flexible circuit board.
Background
The flexible printed circuit board is called as a 'soft board' in short, is commonly called as FPC in the industry, is a printed circuit board made of flexible insulating base materials, and has the advantages that many rigid printed circuit boards do not have. For example it may be freely bent, folded, etc. The flexible circuit board can greatly reduce the volume of the electronic product, and is suitable for the development of the electronic product towards high density, miniaturization and high reliability. Therefore, the flexible circuit board is widely applied to the fields or products of aerospace, military, mobile communication, laptop computers, computer peripherals, PDAs, digital cameras and the like.
However, the conventional three-layer flexible circuit board is formed by conducting three layers of conductor circuits in a copper deposition electroplating mode, but due to the limitation of a copper deposition electroplating process, the three-layer flexible circuit board cannot be manufactured continuously and infinitely, and can only be manufactured within 1 meter at most; and traditional three-layer flexible circuit board is that the electroplating via hole switches on three layer construction, and the product size is too big, is not resistant buckling, and three layer construction can not form continuous infinitely long, has electroplating via hole cracked risk when buckling, also can appear not hard up or the problem of shifting between the three-layer conductor line simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that a continuous low-voltage drop's illumination flexible circuit board is provided, cracked risk appears easily when buckling in the conducting structure that can solve traditional electroplating via hole.
In order to solve the technical problem, the utility model provides a continuous low-voltage drop lighting flexible circuit board, which is sequentially provided with a front surface protective layer, a first circuit layer, a first insulating glue layer, a second circuit layer, a second insulating glue layer, a third circuit layer and a back surface protective layer from top to bottom, a first tin conducting hole is arranged between the first circuit layer and the first insulating glue layer, tin paste capable of conducting the first circuit layer and the second circuit layer is filled in the first tin conducting hole, a second tin guide hole which is coaxially communicated with the first tin guide hole is arranged between the second circuit layer and the second insulating glue layer, the second tin conducting holes are filled with tin paste which can conduct the first circuit layer, the second circuit layer and the third circuit layer, the first circuit layer, the first insulating adhesive layer, the second circuit layer, the second insulating adhesive layer and the third circuit layer are pressed to form a continuous integral structure.
As the preferred scheme of the utility model, the first aperture that leads the tin hole is greater than the aperture that the tin hole was led to the second.
As a preferred aspect of the present invention, the first circuit layer includes a flexible substrate and a conductive circuit on a surface thereof.
As the preferred scheme of the utility model, the second circuit layer is pure copper foil layer.
As the preferred scheme of the utility model, the third circuit layer is pure copper foil layer.
As the preferred proposal of the utility model, the pure copper foil layer is formed by a plurality of parallel copper foil strips which are separated.
As the utility model discloses preferred scheme, the front protective layer with the back protective layer is insulating solder mask.
As the utility model discloses preferred scheme, the illumination flexible circuit board still includes a plurality of electronic components, the front protective layer is equipped with a plurality ofly can supply each electronic components pastes the window of dress on first circuit layer.
As the utility model discloses preferred scheme, the surface of positive protective layer is equipped with the character sign.
As the preferable proposal of the utility model, the thickness range of the front protective layer is 12um-100 um; the thickness range of the first circuit layer is 50-200 um; the thickness range of the first insulating glue layer is 12-100 um; the thickness range of the second circuit layer is 50um-200 um; the thickness range of the second insulating glue layer is 12-100 um; the thickness range of the third circuit layer is 50-200 um; the thickness range of the back surface protection layer is 12um-100 um.
Implement the utility model discloses a lighting flexible circuit board of low pressure drop in succession compares with prior art, has following beneficial effect:
(1) the utility model discloses a lead tin cream and switch on first circuit layer, second circuit layer and third circuit layer in second lead tin hole and second lead tin hole through packing tin cream for the three-layer circuit realizes the electricity and connects, has solved the risk that the fracture easily appears when buckling in the conduction structure of traditional electroplating via hole, and the performance is more stable, reliable;
(2) the utility model discloses a first insulating glue film and second insulating glue film, make first circuit layer, second circuit layer and third circuit layer keep apart each other and pressfitting form a continuous infinitely long overall structure, thereby make the problem that can not appear becoming flexible or shift between each circuit layer, avoid appearing the unreliable condition of flexible line way board, and can also avoid the unstable problem of electronic components welding, improved the stability and the reliability of flexible line way board;
(3) compared with the existing flexible circuit board with a single-layer or double-layer circuit layer, the flexible circuit board with three circuit layers can further reduce the conductive impedance of the flexible circuit board, reduce the voltage drop of the lead circuit (namely the second circuit layer and the third circuit layer) of an external power supply, reduce the loss generated in the use process, improve the long-distance transmission electrical performance of the low-voltage circuit board, reduce the installation cost and improve the production efficiency.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a continuous low-voltage drop lighting flexible circuit board provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the preferred embodiment of the present invention is a lighting flexible circuit board with continuous low voltage drop, which is sequentially provided with a front protection layer 1, a first circuit layer 2, a first insulation adhesive layer 3, a second circuit layer 4, a second insulation adhesive layer 5, a third circuit layer 6 and a back protection layer 7 from top to bottom, wherein a first tin-guiding hole 8 is provided between the first circuit layer 2 and the first insulation adhesive layer 3, the first tin-guiding hole 8 is filled with a tin paste capable of conducting the first circuit layer 2 and the second circuit layer 4, a second tin-guiding hole 9 is provided between the second circuit layer 4 and the second insulation adhesive layer 5 and coaxially communicated with the first tin-guiding hole 8, the second tin-guiding hole 9 is filled with a tin paste capable of conducting the first circuit layer 2, the second circuit layer 4 and the third circuit layer 6, the first circuit layer 2, the first insulation adhesive layer 3, the second circuit layer 4, The second insulating glue layer 5 and the third circuit layer 6 are pressed to form a continuous integral structure.
Therefore, the utility model discloses a pack the tin cream in second lead tin hole 9 and switch on first circuit layer 2, second circuit layer 4 and third circuit layer 6 for the three-layer circuit realizes the electricity and connects, has solved the risk that the fracture easily appears when buckling in the conduction structure of traditional electroplating via hole, and the performance is more stable, reliable; secondly, the first circuit layer 2, the second circuit layer 4 and the third circuit layer 6 are mutually isolated and pressed to form a continuous and infinite-length integral structure through the first insulating glue layer 3 and the second insulating glue layer 5, so that the problem of looseness or displacement among the circuit layers is avoided, the situation that a flexible circuit board is unreliable is avoided, the problem that electronic components are unstable in welding can be avoided, and the stability and reliability of the flexible circuit board are improved; finally, compared with the existing single-layer or double-layer circuit layer flexible circuit board, the flexible circuit board with the three circuit layers can further reduce the conductive impedance of the flexible circuit board, reduce the voltage drop of the lead lines (namely the second circuit layer 4 and the third circuit layer 6) of the external power supply, reduce the loss generated in the use process, improve the long-distance transmission electrical performance of the low-voltage circuit board, reduce the installation cost and improve the production efficiency.
Illustratively, the aperture of the first tin conduction hole 8 is larger than that of the second tin conduction hole 9. Due to the design, the solder paste can be bonded on the surface of the second circuit layer 4, so that the contact area between the solder paste and the second circuit layer 4 is increased, and the connection structure and the conduction performance of the first circuit layer 2, the second circuit layer 4 and the third circuit layer 6 are more stable and reliable.
Illustratively, the first circuit layer 2 is used to realize a circuit arrangement of a lighting flexible circuit board, which includes a flexible substrate 21 and conductive traces 22 on a surface thereof.
Illustratively, the second circuit layer 4 is a pure copper foil layer for external power supply. Wherein, the pure copper foil layer is formed by a plurality of parallel copper foil strips at intervals.
Illustratively, the third circuit layer 6 is a pure copper foil layer for external power supply. Wherein, the pure copper foil layer is formed by a plurality of parallel copper foil strips at intervals.
It should be further noted that when the lamp strip is applied to the lamp strip, due to the design of the second circuit layer 4 and the third circuit layer 6, no additional lead is required to be connected, so that the prepared lamp strip can be coated with rubber at one time, and the manufacturing difficulty of the lamp strip is reduced; and because of adopting the pure copper foil, the whole thickness of the circuit board can be greatly reduced, the circuit board is more compact, and the pure copper foil is formed by adopting continuous physical cutting, so that the continuous production can be realized, the defects that the circuit board with the circuit etched in the prior art has the length of only 1 meter at most and a plurality of strips need to be spliced in the preparation of the lamp strip are overcome, and the production efficiency can be greatly improved.
Illustratively, the first insulating glue layer 3 and the second insulating glue layer 5 are both double-sided solid pure glue of a carrier, and are used for bonding and isolating the first circuit layer 2, the second circuit layer 4 and the third circuit layer 6.
Illustratively, the front surface protection layer 1 is an insulating solder mask layer, and preferably an insulating solder mask layer is used for protecting the front surface of the flexible printed circuit board, that is, the first circuit layer 2. Because the lighting flexible circuit board further comprises a plurality of electronic components, a plurality of windows which can be used for the electronic components to be attached to the first circuit layer 2 are arranged on the front protection layer 1. When preparing the lamp area, set up the lamp pearl on first circuit layer 2, after long-time use, in the great or heavier place of moisture of dust very much, take place the short circuit easily between lamp pearl and first circuit layer 2, cause the trouble, consequently, covered insulating solder mask on first circuit layer 2, isolated first circuit layer 2 with external environment, provided good electronic insulation function, prevent the problem of solder deposit during follow-up welding simultaneously. In addition, the outer surface of the front surface protection layer 1 is also provided with character marks.
Illustratively, the back surface protection layer 7 is an insulating solder mask layer, preferably an insulating solder mask layer, and is used for protecting the back surface of the flexible circuit board, that is, the third circuit layer 6.
Illustratively, the thickness of the front surface protection layer 1 ranges from 12um to 100 um; the thickness range of the first circuit layer 2 is 50um-200 um; the thickness range of the first insulating glue layer 3 is 12um-100 um; the thickness range of the second circuit layer 4 is 50um-200 um; the thickness range of the second insulating glue layer 5 is 12-100 um; the thickness range of the third circuit layer 6 is 50um-200 um; the thickness range of the back surface protection layer 7 is 12um-100 um.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (10)
1. A continuous low-voltage-drop lighting flexible circuit board is characterized in that the lighting flexible circuit board is sequentially provided with a front protection layer, a first circuit layer, a first insulating glue layer, a second circuit layer, a second insulating glue layer, a third circuit layer and a back protection layer from top to bottom, a first tin conducting hole is arranged between the first circuit layer and the first insulating glue layer, tin paste capable of conducting the first circuit layer and the second circuit layer is filled in the first tin conducting hole, a second tin guide hole which is coaxially communicated with the first tin guide hole is arranged between the second circuit layer and the second insulating glue layer, the second tin conducting holes are filled with tin paste which can conduct the first circuit layer, the second circuit layer and the third circuit layer, the first circuit layer, the first insulating adhesive layer, the second circuit layer, the second insulating adhesive layer and the third circuit layer are pressed to form a continuous integral structure.
2. The continuous low drop-out lighting flexible circuit board of claim 1, wherein the first tin conducting via has a larger pore size than the second tin conducting via.
3. The continuous low drop-out lighting flexible circuit board of claim 1, wherein the first circuitry layer comprises a flexible substrate and conductive traces on a surface thereof.
4. The continuous low drop-out, illuminated flexible circuit board of claim 1, wherein the second circuit layer is a pure copper foil layer.
5. The continuous low drop-out, illuminated flexible circuit board of claim 1, wherein said third circuit layer is a pure copper foil layer.
6. The continuous low drop-out lighting flexible circuit board of claim 4 or 5, wherein said pure copper foil layer is formed from a plurality of parallel spaced-apart strips of copper foil.
7. The continuous low drop-out lighting flexible circuit board of claim 1, wherein the front protective layer and the back protective layer are both insulating solder resists.
8. The continuous low drop-out lighting flexible circuit board of claim 1, wherein the lighting flexible circuit board further comprises a plurality of electronic components, and the front cover layer has a plurality of windows for each of the electronic components to be attached to the first circuit layer.
9. The continuous low drop-out lighting flexible circuit board of claim 1, wherein an outer surface of the front protective layer is provided with a character mark.
10. The continuous low drop-out lighting flexible circuit board of claim 1, wherein the front protective layer has a thickness in the range of 12um to 100 um; the thickness range of the first circuit layer is 50-200 um; the thickness range of the first insulating glue layer is 12-100 um; the thickness range of the second circuit layer is 50um-200 um; the thickness range of the second insulating glue layer is 12-100 um; the thickness range of the third circuit layer is 50-200 um; the thickness range of the back surface protection layer is 12um-100 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920744188.9U CN210274699U (en) | 2019-05-22 | 2019-05-22 | Continuous low-voltage-drop lighting flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920744188.9U CN210274699U (en) | 2019-05-22 | 2019-05-22 | Continuous low-voltage-drop lighting flexible circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN210274699U true CN210274699U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920744188.9U Active CN210274699U (en) | 2019-05-22 | 2019-05-22 | Continuous low-voltage-drop lighting flexible circuit board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112672527A (en) * | 2020-12-25 | 2021-04-16 | 张晟 | Circuit wiring method and circuit board |
| CN113915201A (en) * | 2021-09-29 | 2022-01-11 | 航天精工股份有限公司 | Sensor fastener with traceability and preparation method thereof |
-
2019
- 2019-05-22 CN CN201920744188.9U patent/CN210274699U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112672527A (en) * | 2020-12-25 | 2021-04-16 | 张晟 | Circuit wiring method and circuit board |
| CN113915201A (en) * | 2021-09-29 | 2022-01-11 | 航天精工股份有限公司 | Sensor fastener with traceability and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A lighting flexible circuit board with continuous low voltage drop Effective date of registration: 20220706 Granted publication date: 20200407 Pledgee: Jiangmen Rural Commercial Bank Co.,Ltd. Jianghai central sub branch Pledgor: Jiangmen Qinyun Circuit Technology Co.,Ltd. Registration number: Y2022980009926 |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20240326 Granted publication date: 20200407 |