CN102287670B - Enhanced soft LED (light emitting diode) lamp strip and manufacturing method thereof - Google Patents
Enhanced soft LED (light emitting diode) lamp strip and manufacturing method thereof Download PDFInfo
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- CN102287670B CN102287670B CN201110223289.XA CN201110223289A CN102287670B CN 102287670 B CN102287670 B CN 102287670B CN 201110223289 A CN201110223289 A CN 201110223289A CN 102287670 B CN102287670 B CN 102287670B
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Abstract
The invention discloses an enhanced soft LED (light emitting diode) lamp strip. The LED lamp strip provided by the invention comprises a soft PCB (printed circuit board) and a hard component arranged on the soft PCB, wherein the back face, corresponding to the hard component, of the soft PCB is provided with an enhanced sheet, and the length-width size of the enhanced sheet is greater than that of the corresponding hard component. The invention also discloses a manufacturing method of the enhanced soft LED (light emitting diode) lamp strip. The LED lamp strip and manufacturing method provided by the invention have the advantages that a steel disc and an adhesive are used, the stress concentration of the combined edges of the two components is greatly reduced, the product with the structure can not crack and shed after being subjected to curling multiple times, the failure rate is greatly reduced, and the service life of the product is prolonged.
Description
Technical field
The present invention relates to light emitting diode (LED) product, relate in particular to a kind of LED of utilization as flexible LED strip of light source and preparation method thereof.
Background technology
Along with scientific and technical development, LED is widely used.Wherein one of most important application is to utilize LED to make the display screen of all size, by the display screen of these modern structure, can propagate effectively in large quantities various information, to meet the needs of people's work, study, amusement and life.In the time making large-size display screen, normally the less lamp bar of size of many integrated multiple LED and circuit thereof is arranged in to modular unit, then a piece module spliced is connected into satisfactory display screen.For ease of accumulating, it is little, lightweight that people design volume, is convenient to curling flexible LED display screen.This product is the components and parts that hard material is set on flexible printed wiring board (PCB), as, IC chip, LED lamp etc.When lamp bar repeatedly curling, launch time, easily produce stress at the jointing edge of harder components and parts and softer PCB material and concentrate, through repeatedly curling, launch, these jointing edges will ftracture, come off, cause fault, thereby affect quality and the service life of product.
Summary of the invention
The present invention, in order to solve above-mentioned problems of the prior art, proposes a kind of concentrated reinforced flexible LED lamp bar of stress and preparation method thereof that greatly reduces.
For solving the problems of the technologies described above, the reinforced flexible LED lamp bar that the present invention proposes, it comprises flexible PCB, is located at the hard components and parts on this flexible PCB.The back side of the flexible PCB of corresponding described hard components and parts is provided with hard reinforced sheet, and the length and width size of this hard reinforced sheet is slightly larger than the length and width size of the described hard components and parts of its correspondence.
Preferably, the edge filling that described hard reinforced sheet is combined with flexible PCB has adhesive.
The long lamp bar that the present invention can also form adjacent described flexible PCB head and the tail overlap joint, described lap-joint is coated with described adhesive.
Preferably, the tow sides at described flexible PCB two ends are provided with the first pad, separate on the surface of flexible PCB of an overlap distance be also provided with the second pad at this pad; Two adjacent flexible PCB head and the tail overlap and make described pad relatively to connect into described long lamp bar.
The preparation method of the reinforced flexible LED lamp bar that the present invention proposes, step is as follows:
A, hard components and parts are connected on flexible PCB, and at the back side of the flexible PCB of corresponding hard components and parts, hard reinforced sheet are set, the length and width size of this hard reinforced sheet is slightly larger than the length and width size of the described hard components and parts of its correspondence;
B, the edge filling adhesive of being combined with flexible PCB at hard reinforced sheet, the adhesive described in the edge filling of being combined with flexible PCB at hard components and parts;
C, cured adhesive.
Preferably, after steps A completes, all right:
First at the tow sides at flexible PCB two ends, the first pad is set, separates at this pad on the surface of flexible PCB of an overlap distance the second pad is set again;
Overlap and make described pad relative two adjacent flexible PCB head and the tail, then the positive and negative of head and the tail lap-joint is carried out to two-sided welding, thereby polylith flexible PCB is connected to growth lamp bar;
To described lap-joint's adhesive coating.
After hard components and parts are connected on flexible PCB, because hard components and parts to the thickness of flexible PCB changes suddenly, and two kinds of components and parts soft durometer differ larger, easily produce stress at the jointing edge of hard components and parts and PCB soft or hard material and concentrate.The present invention is provided with hard reinforced sheet at the back side of the flexible PCB of corresponding hard components and parts, and the edge of being combined with flexible PCB at hard reinforced sheet, the edge filling that hard components and parts are combined with flexible PCB has the adhesive of mobility, make it fill the space being produced to the varied in thickness of flexible PCB by hard components and parts, so that the mild transition in edge that hard components and parts are combined with flexible PCB, make stress point be offset, thereby the stress that greatly reduces described two member jointing edges is concentrated, the product of this kind of structure also can not be ftractureed through repeatedly curling, come off, greatly reduce fault rate, extend service life.Positive and negative to two flexible PCB head and the tail lap-joints carries out two-sided welding, connects more firmly not frangibility than traditional single-point, can also transmit the more signal of telecommunication and electric current.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is described further, wherein:
Fig. 1 a, Fig. 1 b are respectively front view and the right view of flexible PCB of the present invention;
Fig. 2 a, Fig. 2 b are respectively two flexible PCBs of the present invention and are overlapped to form front view and the right side after lamp bar
View;
Fig. 2 c is the partial enlarged drawing at A place in Fig. 2 b;
Fig. 3 a, Fig. 3 b are respectively front view and the top view after lamp bar side perfusion marine glue of the present invention;
Fig. 4 a, Fig. 4 b are respectively lamp bar of the present invention and all pour into front view and the top view after marine glue.
Detailed description of the invention
As shown in Fig. 1 a, Fig. 1 b and Fig. 2 c, the reinforced flexible LED lamp bar that the better implementation column of the present invention provides, comprises flexible PCB 1, is located at the hard components and parts 2 on this flexible PCB.Be provided with hard reinforced sheet 3 at the back side of the flexible PCB 1 of corresponding hard components and parts 2, the length and width size of this reinforced sheet is slightly larger than the length and width size of its corresponding hard components and parts 2.In the present embodiment, hard reinforced sheet 3 is steel disc, and its thickness is 0.1～0.4 millimeter.Certainly, hard reinforced sheet also can adopt other materials to make, as copper material etc.There is adhesive 6 at steel disc 3 and the edge filling of flexible PCB 1 combination.There is adhesive 6 at hard components and parts 2 and the edge filling of flexible PCB 1 combination.For improving stress performance, also can only fill adhesive 6 at steel disc 3 and the jointing edge of flexible PCB 1 Axis Cross, fill adhesive 6 at hard components and parts 2 and the jointing edge of flexible PCB 1 Axis Cross, and need not fill adhesive 6 at steel disc 3 and hard components and parts 2 jointing edge parallel with flexible PCB 1 axis.Adhesive 6 between two hardened member (steel disc, hard components and parts) is not need to fill continuously, between two hardened member, does not need to stick with glue agent 6 and couples together.If the adhesive 6 between two hardened member is continuous coatings, do not reach and change the object of stress point, make on the contrary all hardening of whole lamp bar, make lamp bar lose flexibility.
As shown in Fig. 2 a, Fig. 2 b and Fig. 2 c, the reinforced flexible LED lamp bar that the better implementation column of the present invention provides, also comprises the long lamp bar that adjacent flexible PCB 1 head and the tail overlap joint is formed.In conjunction with Fig. 1 a, Fig. 1 b, the tow sides at flexible PCB 1 two ends are provided with the first pad 4, separate on the surface of flexible PCB of an overlap distance be also provided with the second pad 9 at this pad.Two adjacent flexible PCB 1 head and the tail overlap and make pad 4,9 relative, by positive and negative two-sided welding, polylith flexible PCB 1 are connected into described long lamp bar.The lap-joint of two adjacent flexible PCBs is coated with adhesive 6.Positive and negative to two flexible PCB head and the tail lap-joints carries out two-sided welding, connects more firmly not frangibility than traditional single-point, can also transmit the more signal of telecommunication and electric current.
Hard components and parts 2 of the present invention can be the one for IC chip, LED lamp, resistance, electric capacity.In preferred embodiment of the present invention, hard components and parts 2 comprise light source led lamp and realize the combination of the components and parts such as the IC of video effect, resistance, electric capacity.On flexible PCB 1, be also provided with the circuit of driving LED.Adhesive 3 can be selected the adhesive of hard, soft adhesive or the one of semihard medium-soft adhesive, object be make hardened member hardness progressively transition approach the hardness of flexible PCB, the existing picture of concentrating to reduce stress.Conventionally adhesive 3 uses ultraviolet curing glue (UV), can also adopt as required other adhesive, for example, silica gel or epoxy resin etc.
The preparation method of the reinforced flexible LED lamp bar that the present invention proposes, has the following steps:
Step 1: hard components and parts 2 are welded on flexible PCB 1, and at back side hot pressing or the bonding steel disc 3 of the flexible PCB 1 of corresponding hard components and parts, the length and width size of this steel disc 3 is slightly larger than the length and width size of the described hard components and parts 2 of its correspondence, thickness is 0.1～0.2 millimeter, consults Fig. 1 a, Fig. 1 b.
Step 2: first at the tow sides at flexible PCB 1 two ends, the first pad 4 is set, separates at this pad on the surface of flexible PCB of an overlap distance the second pad 9 is set again, consult Fig. 1 a, Fig. 1 b.
Step 3: overlap and make the pad at two ends relative two adjacent flexible PCB 1 head and the tail, then the positive and negative of head and the tail lap-joint is carried out to two-sided welding 5, thereby polylith flexible PCB is connected to growth lamp bar, consult Fig. 2 a, Fig. 2 b and Fig. 2 c.
Step 4: the edge filling adhesive 6 at steel disc 3 with flexible PCB 1 combination, the edge filling adhesive 6 at hard components and parts 2 with flexible PCB 1 combination.For improving stress performance, also can only fill adhesive 6 at steel disc 3 and the jointing edge of flexible PCB 1 Axis Cross, fill adhesive 6 at hard components and parts 2 and the jointing edge of flexible PCB 1 Axis Cross.And need not fill adhesive 6 at steel disc 3 and hard components and parts 2 jointing edge parallel with flexible PCB 1 axis.Between two hardened member (reinforced sheet, hard components and parts), also can fill continuously adhesive 6.To two adjacent flexible PCB 1 head and the tail lap-joint adhesive coatings 6, consult Fig. 2 a, Fig. 2 b and Fig. 2 c.
Step 5: solidify all adhesive 6, make it by firmly bonding to steel plate 3 and hard components and parts 2 and flexible PCB 1.
As shown in Figure 3 a, 3 b, for safety, lamp bar can also be placed in silica gel sleeve pipe, at the side perfusion marine glue 8 of lamp bar.As shown in Fig. 4 a and Fig. 4 b, while being necessary, also can lamp bar all be encapsulated with marine glue 8.
The present invention uses steel disc and adhesive, and the stress that greatly reduces described two member jointing edges is concentrated, and makes the product of this kind of structure also can not ftracture, come off through repeatedly curling, greatly reduces fault rate, has extended service life.
In conjunction with preferred embodiments, this patent is specifically described above, but those skilled in the art can make numerous variations or variation to these embodiments, within these changes and variation should fall into the scope of this patent protection.
Claims (4)
1. a reinforced flexible LED lamp bar, comprise flexible PCB (1), be located at the hard components and parts (2) on this flexible PCB, the back side of the flexible PCB (1) of corresponding described hard components and parts (2) is provided with hard reinforced sheet (3), the length and width size of this hard reinforced sheet is greater than the length and width size of the described hard components and parts (2) of its correspondence, it is characterized in that: the tow sides at described flexible PCB (1) two ends are provided with the first pad (4), separate at this first pad on the surface of flexible PCB of an overlap distance and be also provided with the second pad (9); Two adjacent flexible PCB (1) head and the tail overlap and make the first described pad relative with the second pad, by the front-back two-sided growth lamp bar that is welded to connect;
The position of described head and the tail overlap joint is coated with adhesive (6);
Described hard reinforced sheet (3) has adhesive (6) with the edge filling of flexible PCB (1) combination, and between described hard reinforced sheet (3), adhesive (6) is not connected;
Described hard components and parts (2) have described adhesive (6) with the edge filling of flexible PCB (1) combination, and between described hard components and parts (2), adhesive (6) is not connected.
2. reinforced flexible LED lamp bar as claimed in claim 1, is characterized in that: described reinforced sheet (3) is steel disc, and its thickness is 0.1～0.4 millimeter.
3. reinforced flexible LED lamp bar as claimed in claim 2, is characterized in that: the edge of described hard reinforced sheet (3) and flexible PCB (1) combination for the edge of the Axis Cross of flexible PCB (1).
4. a preparation method for reinforced flexible LED lamp bar, is characterized in that comprising the steps:
A, hard components and parts are connected on flexible PCB, and at the back side of the flexible PCB of corresponding hard components and parts, hard reinforced sheet are set, the length and width size of this hard reinforced sheet is greater than the length and width size of the described hard components and parts of its correspondence;
At the tow sides at flexible PCB two ends, the first pad is set, separates at this pad on the surface of flexible PCB of an overlap distance the second pad is set again; Overlap and make the first described pad relative with the second pad two adjacent flexible PCB head and the tail, then the positive and negative of head and the tail lap-joint is carried out to two-sided welding, thereby polylith flexible PCB is connected to growth lamp bar;
B, the position adhesive coating (6) overlapping at described head and the tail, there is adhesive (6) at described hard reinforced sheet (3) and the edge filling of flexible PCB (1) combination, at the adhesive (6) described in the edge filling of described hard components and parts (2) and flexible PCB (1) combination, between described hard reinforced sheet (3), adhesive (6) is not connected, and between described hard components and parts (2), adhesive (6) is not connected;
C, cured adhesive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110223289.XA CN102287670B (en) | 2011-08-05 | 2011-08-05 | Enhanced soft LED (light emitting diode) lamp strip and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110223289.XA CN102287670B (en) | 2011-08-05 | 2011-08-05 | Enhanced soft LED (light emitting diode) lamp strip and manufacturing method thereof |
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| CN102287670A CN102287670A (en) | 2011-12-21 |
| CN102287670B true CN102287670B (en) | 2014-11-19 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742821A (en) * | 2014-01-25 | 2014-04-23 | 深圳市灿明科技有限公司 | LED flexible light bar |
| CN104244595A (en) * | 2014-09-09 | 2014-12-24 | 苏州米达思精密电子有限公司 | Method for manufacturing adhesive indentation reinforcing sheet |
| CN104390118B (en) * | 2014-09-18 | 2019-01-22 | 青岛海信电器股份有限公司 | A kind of backboard and curved surface TV applied to flexible display device |
| CN104633508A (en) * | 2014-12-24 | 2015-05-20 | 西安重装渭南光电科技有限公司 | Plastic LED light source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982547Y (en) * | 2006-10-24 | 2007-11-28 | 邵树发 | LED bank light |
| CN201903024U (en) * | 2010-11-29 | 2011-07-20 | 广州市煜丰音响器材有限公司 | Light emitting diode (LED) lamp strip end part welding circuit structure |
| CN202266911U (en) * | 2011-08-05 | 2012-06-06 | 王宁 | Strengthened flexible light-emitting diode (LED) lamp strip |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100727791B1 (en) * | 2006-08-18 | 2007-06-13 | 주식회사 라이트론 | Led lighting device of bar type |
| CN101886760A (en) * | 2010-06-18 | 2010-11-17 | 王宁 | Enhanced flexible LED (Light-Emitting Diode) light bar and manufacture method thereof |
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- 2011-08-05 CN CN201110223289.XA patent/CN102287670B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982547Y (en) * | 2006-10-24 | 2007-11-28 | 邵树发 | LED bank light |
| CN201903024U (en) * | 2010-11-29 | 2011-07-20 | 广州市煜丰音响器材有限公司 | Light emitting diode (LED) lamp strip end part welding circuit structure |
| CN202266911U (en) * | 2011-08-05 | 2012-06-06 | 王宁 | Strengthened flexible light-emitting diode (LED) lamp strip |
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