CN102974907A

CN102974907A - Welding process method of light emitting diode (LED) assembly

Info

Publication number: CN102974907A
Application number: CN2011102722259A
Authority: CN
Inventors: 陈灿荣
Original assignee: SUZHOU SHIDING ELECTRONICS CO Ltd
Current assignee: SUZHOU SHIDING ELECTRONICS CO Ltd
Priority date: 2011-09-06
Filing date: 2011-09-06
Publication date: 2013-03-20

Abstract

The invention relates to a welding process method of a light emitting diode (LED) assembly, wherein the welding process method can be applied into processes of an LED backlight module and an LED lamp and can enables the LED assembly to be welded into covers of the LED backlight module and the LED lamp. According to the welding process method of the LED assembly, any automatic point welding machines or mechanical arms are not needed to be used, and equipment cost is low; and besides, in welding, one-shot heating for solder is needed, and thermal budgets of the integral process can be effectively reduced.

Description

The welding technique of LED assembly

Technical field

The invention relates to a kind of welding technique, particularly about a kind of welding technique for the designed a kind of LED assembly of the LED assembly that is welded in cover body.

Background technology

Light emitting diode (Light-Emitting Diode, LED) is the luminescence component of present extensive use, because it has the advantages such as volume is little, long service life, thereby is widely used in the human daily life.

The most normal lighting device that is applied to of light emitting diode, see also Fig. 1, the stereogram of existing a kind of light emitting diode illuminating apparatus of commonly using, as shown in Figure 1, this light emitting diode illuminating apparatus 1 ' comprising: a main body 11 ', a copper wire layer 12 ', a plurality of LED assembly 13 ', a thermal conductive insulation glue (not shown) and a white reflection sheet 14 '.This copper wire layer 12 ' is arranged at a groove surfaces of main body 11 ', and these a plurality of LED assemblies 13 ' then are welded on copper wire layer the 12 ' surperficial default weld pad.In addition, this white reflection sheet 14 ' is attached at the surface of copper wire layer 12 ' and has a plurality of holes.

When making this light emitting diode illuminating apparatus 1 ', usually first copper wire layer 12 ' is placed the groove surfaces of main body 11 ', then, white reflection sheet 14 ' is placed the surface of copper wire layer 12 ', at last, the recycling stitch welding machine is welded in each LED assembly 13 ' in these a plurality of holes of white reflection sheet 14 ' in the mode of spot welding.Yet the welding of finishing LED assembly 13 ' in the mode of spot welding has following shortcoming:

1. in the pinpoint welding procedure, if stitch welding machine or its robotic arm are given a shock, then part LED assembly 13 ' can't be welded in the hole of white reflection sheet 14 ' exactly, so, will cause the part LED assembly 13 ' can't be luminous.

2. in the pinpoint welding procedure, need constantly heat scolder, so, robotic arm is gripping LED assembly 13 ' and it is welded in the hole of white reflection sheet 14 ' continuously; And such welding manner causes the heat budget (thermal budget) of welding procedure integral body to reduce.

In addition, except being applied to lighting device, light emitting diode is applied in the backlight module in a larger amount, see also Fig. 2, it is the stereogram of existing a kind of light-emitting diode (LED) backlight module of commonly using, as shown in Figure 2, this light-emitting diode (LED) backlight module 1 ' ' comprising: a cover body 11 ' ', a copper wire layer 12 ' ', a plurality of LED assembly 13 ' ', a heat-conducting layer 18 ' ', a reflecting element 14 ' ', a LGP 15 ' ' and an end reflector plate 16 ' '.In this cover body 11 ' wherein ' have cover body bottom 111 ' ', this copper wire layer 12 ' ' then be arranged at by one first insulating heat-conductive glue (not shown) this cover body bottom 111 ' '.

Consult unceasingly Fig. 2, these a plurality of LED assemblies 13 ' in ' be arranged at cover body 11 ' ' and be welded in this copper wire layer 12 ' '.In addition, because heat-conducting layer 18 ' ' made by the metal with high heat-conduction coefficient, so, the phenomenon that the surface of heat-conducting layer 18 ' ' must be attached at again this copper wire layer 12 ' by one second insulating heat-conductive glue (not shown) ' is to avoid the heat-conducting layer 18 ' of metal material ' with copper wire layer 12 ' ' is short-circuited.As shown in the figure, heat-conducting layer 18 ' ' have equally a bottom 181 ' ', and this bottom 181 ' ' have a plurality of the first holes 182 ' '; So, when heat-conducting layer 18 ' during ' be attached at copper wire layer 12 ' ' surperficial, these a plurality of LED assemblies 13 ' ' can pass respectively this a plurality of the first holes 182 ' '.

This reflecting element 14 ' ' then with respect to these a plurality of LED assemblies 13 ' ' and be arranged at cover body 11 ' ' in, and reflecting element 14 ' ' have a reflecting element bottom 111 ' ', and this reflecting element bottom 141 ' ' have a plurality of the second holes 142 ' ', the light that one light emitting surface of wherein, each LED assembly 13 ' ' a plurality of the second holes 142 ' ' sends can see through these the second hole 142 ' a plurality of second holes 142 ' ' and penetrate.

Via above-mentioned, can learn the present light-emitting diode (LED) backlight module 1 ' of commonly using that has now the also suitable height of light utilization rate of ' suitable simple of framework, and this light-emitting diode (LED) backlight module 1 ' '; Yet ' time, usually first with copper wire layer 12 ' ' is arranged at this cover body bottom 111 ' to make this light-emitting diode (LED) backlight module 1 ' ' surface, then, with heat-conducting layer 18 ' ' places copper wire layer 12 ' ' the surface; Afterwards, utilize stitch welding machine in the mode of spot welding with each LED assembly 13 ' these a plurality of first holes 182 ' of ' be welded in heat-conducting layer 18 ' ' ' in; At last, in ', LGP 15 ' ' and end reflector plate 16 ' again with reflecting element 14 ' ' be incorporated into cover body 11 ' '.The welding that identical with aforementioned light emitting diode illuminating apparatus 1 ' is to make this light-emitting diode (LED) backlight module 1 ' ' time, finish LED assembly 13 ' in the mode of spot welding ' can be learnt light-emitting diode (LED) backlight module 1 ' ' technique have following shortcoming:

The first hole 182 ' of A. in the pinpoint welding procedure, if stitch welding machine or its robotic arm are given a shock, part LED assembly 13 ' then ' possibly can't be welded in exactly heat-conducting layer 18 ' ' ' in, so, will cause part LED assembly 13 ' ' can't be luminous.

B. the first hole 182 ' that in the pinpoint welding procedure, need constantly heat scolder, so, robotic arm is gripping LED assembly 13 ' continuously ' and be welded in heat-conducting layer 18 ' with it ' ' in; And such welding manner causes the heat budget (thermal budget) of welding procedure integral body to reduce.

This shows that above-mentioned existing light-emitting diode (LED) backlight module obviously still has inconvenience and defective, and demands urgently further being improved in product structure, manufacture method and use.Therefore how to found a kind of welding technique of new LED assembly, also becoming the current industry utmost point needs improved target.

Because the defective that above-mentioned existing light-emitting diode (LED) backlight module exists, the inventor is based on being engaged in for many years abundant practical experience and professional knowledge of this type of product design manufacturing, and the utilization of cooperation scientific principle, positive research and innovation in addition, in the hope of founding a kind of welding technique of new LED assembly, can improve general existing light-emitting diode (LED) backlight module, make it have more practicality.Through constantly research, design, and through after repeatedly studying sample and improvement, finally create the present invention who has practical value.

Summary of the invention

Main purpose of the present invention is, overcome the defective that existing light-emitting diode (LED) backlight module exists, and provide a kind of welding technique of new LED assembly, technical problem to be solved is to make it in the welding technique of this LED assembly, need not use any stitch welding machine and robotic arm, have the cheap advantage of equipment cost; And, during welding, only need scolder is once heated, can effectively reduce the heat budget of technique integral body, be very suitable for practicality.

The object of the invention to solve the technical problems realizes by the following technical solutions.The welding technique of a kind of LED assembly that proposes according to the present invention, comprising following steps: take off a plurality of LED assemblies (1) from a strip; (2) light emitting surface that will these a plurality of LED assemblies and is arranged in order one first with it and puts on the tool down; (3) use one first to push away tool and promote to be arranged in this first these a plurality of LED assemblies of putting on the tool, and make it drop down onto one second to put on the tool; (4) move this and second put tool, make it push away tool with respect to one second; (5) use this second to push away tool and promote to drop down onto this and second put these a plurality of LED assemblies of tool, and make it drop into simultaneously a plurality of holes on the assembled material, wherein, the rear surface of this assembled material is pasted with an anti-welding adhesive tape; (6) use a pressing element to press down these a plurality of LED assemblies of dropping in these a plurality of holes, make it be bonded in this anti-welding adhesive tape; (7) printing one scolder is on a plurality of solder joints of a solder side of these a plurality of LED assemblies; (8) with the front surface of assembled material down, so that this solder side of LED assembly down; (9) assembled material is placed in the cover body, and be positioned at the surface of a copper wire layer; (10) cover body is placed one have the welding surroundings of specified temp and carry out a reflow and connect technique, so that these a plurality of LED components weldings are in the surface of this copper wire layer; And (11) take out cover body from the welding surroundings that this has specified temp, and remove the anti-welding adhesive tape of the rear surface that attaches assembled material.

The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.

The welding technique of aforesaid LED assembly, wherein said this step (3) described second is put tool and is had a plurality of guide rails, and these a plurality of LED assemblies drop on respectively within these a plurality of guide rails.

The welding technique of aforesaid LED assembly, wherein said this step (3) more may further comprise the steps: (31) are controlled this and first are pushed away tool and move along a first direction, and make its contact be arranged in this first last LED assembly of putting these upper a plurality of LED assemblies of tool; (32) control unceasingly first and push away tool and move along this first direction, so that first pushes away tool and move a correction distance; (33) be arranged in first and put these a plurality of LED assemblies on the tool and be subject to rear first and push away pushing of tool, and move to the first end place of putting tool; (34) control unceasingly first and push away tool and move along first direction, so that first pushes away tool and move one first specific range; (35) be arranged in first and put these a plurality of LED assemblies on the tool and be subject to rear first and push away pushing of tool, drop down onto this and second put on this guide rail of tool so that be positioned at the first LED assembly of putting tool end place; (36) control this and second put tool and move along a second direction, so that second puts tool and move one second specific range; And (37) judge whether that first puts all LED assemblies on the tool and all drop down onto second and put on the tool, if, then carry out abovementioned steps (4), if not, then repeat abovementioned steps (34).

The welding technique of aforesaid LED assembly, wherein said this first direction can be X-direction or Y direction.

The welding technique of aforesaid LED assembly, the width that wherein said this first specific range is a LED assembly.

The welding technique of aforesaid LED assembly, wherein said this second direction is Y direction or X-direction.

The welding technique of aforesaid LED assembly, the length of wherein said this second specific range are the summation of the spacing of the length of a LED assembly and adjacent two guide rails.

The welding technique of aforesaid LED assembly, wherein said this step (4) described second push away tool to have a plurality of sons and pushes away tool, and this son pushes away tool and can insert this and second put in this guide rail of tool.

The welding technique of aforesaid LED assembly, wherein said this step (5) more may further comprise the steps: (51) are controlled this and second are pushed away tool and move along this first direction, and make its this a plurality of sons push away tool to insert respectively second and put in these a plurality of guide rails of tool; (52) control unceasingly second and push away tool and move along first direction, all contact this LED assembly so that each height pushes away tool; And (53) control unceasingly second and push away tool and move along first direction, so that second push away tool and promote simultaneously second these a plurality of LED assemblies of putting on the tool, makes it drop into simultaneously a plurality of holes on this assembled material.

The welding technique of aforesaid LED assembly, wherein said this assembled material can be following any: reflector plate and thermal conductive belt.

The welding technique of aforesaid LED assembly is in the wherein said technique that is applied to high-capacity LED backlight module, low-power LED-backlit module and LED light fixture.

The object of the invention to solve the technical problems also realizes by the following technical solutions.The welding technique of a kind of LED assembly that proposes according to the present invention is comprising following steps: (A) a plurality of LED assemblies are taken off from a strip; (B) light emitting surface that will these a plurality of LED assemblies and is arranged in order one first with it and puts on the tool down; (C) use one first pushes away tool and promotes to be arranged in this first these a plurality of LED assemblies of putting on the tool, and collocation is used a driving-belt and so that these a plurality of LED assemblies are dropped into a plurality of holes on the assembled material in order, wherein, the rear surface of this assembled material is pasted with an anti-welding adhesive tape; (D) assembled material is moved to pressing element below, and use this pressing element to press down and drop into these interior a plurality of LED assemblies of these a plurality of holes, make it be bonded in this anti-welding adhesive tape; (E) printing one scolder is on a plurality of solder joints of a solder side of these a plurality of LED assemblies; (F) with the front surface of assembled material down, so that this solder side of LED assembly down; (G) assembled material is placed within the cover body, and be positioned at the surface of a copper wire layer; (H) cover body is placed one have the welding surroundings of specified temp and carry out a reflow and connect technique, so that these a plurality of LED components weldings are in the surface of this copper wire layer; And the anti-welding adhesive tape that (I) cover body is taken out, and remove the rear surface of attaching assembled material from the welding surroundings that this has specified temp.

The welding technique of aforesaid LED assembly, wherein said this step (C) more may further comprise the steps: (C1) control this and first push away tool and move along a first direction, and make its contact be arranged in this first last LED assembly of putting these a plurality of LED assemblies on the tool; (C2) control unceasingly first and push away tool and move along this first direction, so that first pushes away tool and move a correction distance; (C3) be arranged in first and put these a plurality of LED assemblies on the tool and be subject to rear first and push away pushing of tool, and move to the first end place of putting tool; (C4) control unceasingly first and push away tool and move along first direction, so that first pushes away tool and move one first specific range; (C5) be arranged in first and put these a plurality of LED assemblies on the tool and be subject to rear first and push away pushing of tool, drop down onto on the surface of this assembled material so that be positioned at the first LED assembly of putting tool end place, and be sandwiched between this driving-belt and the assembled material; (C6) driving-belt constantly turns round and drives the LED assembly and moves on the surface of assembled material; (C7) the LED assembly is moved into first hole part of these a plurality of holes on the assembled material, and drops within this hole; And (C8) judge whether that first puts all LED assemblies on the tool and all drop in the hole on the assembled material, if, then carry out abovementioned steps (D), if not, then repeat abovementioned steps (C4).

The welding technique of aforesaid LED assembly, the described driving-belt of wherein said this step (C) are positioned at this assembled material top, and have a space between driving-belt and the assembled material.

The welding technique of aforesaid LED assembly, the height in wherein said this space is slightly less than the thickness of this LED assembly, so that the LED assembly can be sandwiched between this driving-belt and this assembled material.

The welding technique of aforesaid LED assembly, the skin-friction force of wherein said this driving-belt is greater than the skin-friction force of this assembled material.

The welding technique of aforesaid LED assembly, the described assembled material of wherein said this step (C) can place the carrying with a plurality of slotted eyes to put the tool below, assists these a plurality of LED assemblies to drop into respectively in these a plurality of holes with these a plurality of slotted eyes that utilize this carrying to put tool.

The present invention compared with prior art has obvious advantage and beneficial effect.By above technical scheme as can be known, main technical content of the present invention is as follows: propose a kind of welding technique of LED assembly, may further comprise the steps: take off a plurality of LED assemblies (1) from a strip; (2) light emitting surface that will these a plurality of LED assemblies and is arranged in order one first with it and puts on the tool down; (3) use one first to push away tool and promote to be arranged in this first these a plurality of LED assemblies of putting on the tool, and make it drop down onto one second to put on the tool; (4) move this and second put tool, make it push away tool with respect to one second; (5) use this second to push away tool and promote to drop down onto this and second put these a plurality of LED assemblies of tool, and make it drop into simultaneously a plurality of holes on the assembled material, wherein, the rear surface of this assembled material is pasted with an anti-welding adhesive tape; (6) use a pressing element to press down these a plurality of LED assemblies of dropping in these a plurality of holes, make it be bonded in this anti-welding adhesive tape; (7) printing one scolder is on a plurality of solder joints of a solder side of these a plurality of LED assemblies; (8) with the front surface of assembled material down, so that this solder side of LED assembly down; (9) assembled material is placed in the cover body, and be positioned at the surface of a copper wire layer; (10) cover body is placed one have the welding surroundings of specified temp and carry out a reflow process, so that these a plurality of LED components weldings are in the surface of this copper wire layer; And (11) take out cover body from the welding surroundings that this has specified temp, and remove the anti-welding adhesive tape of the rear surface that attaches assembled material.In addition, the welding technique of LED assembly of the present invention has more another possible embodiments, and this possible embodiments may further comprise the steps: (A) a plurality of LED assemblies are taken off from a strip; (B) light emitting surface that will these a plurality of LED assemblies and is arranged in order one first with it and puts on the tool down; (C) use one first pushes away tool and promotes to be arranged in this first these a plurality of LED assemblies of putting on the tool, and collocation is used a driving-belt and so that these a plurality of LED assemblies are dropped into a plurality of holes on the assembled material in order, wherein, the rear surface of this assembled material is pasted with an anti-welding adhesive tape; (D) assembled material is moved to pressing element below, and use this pressing element to press down and drop into these interior a plurality of LED assemblies of these a plurality of holes, make it be bonded in this anti-welding adhesive tape; (E) printing one scolder is on a plurality of solder joints of a solder side of these a plurality of LED assemblies; (F) with the front surface of assembled material down, so that this solder side of LED assembly down; (G) assembled material is placed in the cover body, and be positioned at the surface of a copper wire layer; (H) cover body is placed one have the welding surroundings of specified temp and carry out a reflow process, so that these a plurality of LED components weldings are in the surface of this copper wire layer; And the anti-welding adhesive tape that (I) cover body is taken out, and remove the rear surface of attaching assembled material from the welding surroundings that this has specified temp.

By technique scheme, the welding technique of LED assembly of the present invention has following advantages and beneficial effect at least:

1. the present invention should place in the hole of this assembled material (that is, aforesaid thermal conductive belt) by a plurality of LED assemblies, and assembled material is placed in the cover body, then, again all LED assemblies is carried out welding procedure at one time; Hence one can see that, and the welding technique of LED assembly of the present invention need not use any stitch welding machine and robotic arm, has the cheap advantage of equipment cost.

2. the present invention is after LED assembly and assembled material place in the cover body, cover body placed one to have the welding surroundings of specified temp and carry out a reflow and connect technique, so that the LED assembly is welded in the surface of copper wire layer again; So, during welding, only need scolder is once heated, therefore can effectively reduce the heat budget of technique integral body.

3. in addition, hold above-mentioned the 1st point, because the present invention welds all LED assemblies at one time, so, compared to existing located by prior art (namely, use stitch welding machine and robotic arm to carry out the solder technology of LED assembly), the welding technique of LED assembly of the present invention can be finished the welding of all LED assemblies in the short period of time.

Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.

Description of drawings

Fig. 1 is the stereogram of existing a kind of light emitting diode illuminating apparatus of commonly using;

Fig. 2 is the stereogram of existing a kind of light-emitting diode (LED) backlight module of commonly using;

But Fig. 3 A, Fig. 3 B are the flow charts of one first embodiment of the welding technique of a kind of LED assembly of the present invention;

Fig. 4 is the process schematic representation of the welding technique of LED assembly;

Fig. 5 is the process schematic representation of the welding technique of LED assembly;

Fig. 6 is the process schematic representation of the welding technique of LED assembly;

Fig. 7 is the process schematic representation of the welding technique of LED assembly;

Fig. 8 is the process schematic representation of the welding technique of LED assembly;

Fig. 9 is the detailed step flow chart of a step (S03) of the welding technique of LED assembly;

Figure 10 is the detailed step flow chart of a step (S05) of the welding technique of LED assembly;

Figure 11 is the stereogram of a LED light fixture;

But Figure 12 A, Figure 12 B are the flow charts of one second embodiment of the welding technique of a kind of LED assembly of the present invention;

But Figure 13 is the process schematic representation of the first embodiment of the welding technique of LED assembly; And

But Figure 14 A, Figure 14 B are the detailed step flow charts of a step (S0C) of the first embodiment of the welding technique of LED assembly.

1: strip 11:LED assembly

Put tool 3: the first push away tool at 2: the first

Put tool 41 at 4: the second: guide rail

Push away tool 51 at 5: the second: son pushes away tool

6: assembled material 61: hole

62: anti-welding adhesive tape

7: cover body 71: copper wire layer

8: welding surroundings 9: driving-belt

S01-S06: method step S07-S11: method step

S031-S037: method step S051-S053: method step

S0A-S0E: method step S0F-S0I: method step

S0C1-S0C6: method step S0C7-S0C8: method step

1 ': light emitting diode illuminating apparatus 11 ': main body

12 ': copper wire layer 13 ': the LED assembly

14 ': white reflection sheet 1 ' ': light-emitting diode (LED) backlight module

11 ' ': cover body 12 ' ': copper wire layer

13 ' ': LED assembly 18 ' ': heat-conducting layer

14 ' ': reflecting element 15 ' ': LGP

16 ' ': end reflector plate 111 ' ': the cover body bottom

181 ' ': bottom 182 ' ': the first hole

142 ' ': the second hole

The specific embodiment

Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, its specific embodiment of welding technique, structure, method, step, feature and the effect thereof of the LED assembly that foundation the present invention is proposed are described in detail as follows.

But the welding technique of LED assembly of the present invention has the steps flow chart of two cover embodiment, and the welding technique of LED assembly of the present invention can be applicable in the technique of LED-backlit module and LED light fixture.See also Fig. 3 A and Fig. 3 B, but the flow chart of one first embodiment of the welding technique of a kind of LED assembly of the present invention.In addition, and please consult simultaneously Fig. 4 to Fig. 8, the process schematic representation of the welding technique of LED assembly.

Such as Fig. 3 A figure and shown in Figure 4, at first, the welding technique execution in step (S01) of this LED assembly and step (S02) are taken off a plurality of LED assemblies 11 from a strip 1, and light emitting surface that will these a plurality of LED assemblies 11 down, and it is arranged in one first in order puts on the tool 2.As shown in Figure 4, by a surface that this strip 1 is pasted with diaphragm down and tear this diaphragm, then the LED assembly 11 in the strip 1 just falls to this with its light emitting surface and first puts on the tool 2.When carrying out the welding technique of this LED assembly, can use an automatic stripping machine automatically completing steps (S01) and step (S02).

After completing steps (S01) and step (S02), such as Fig. 3 A, Fig. 5 and shown in Figure 6, this welding technique continues execution in step (S03), use one first to push away tool 3 and promote to be arranged in this first these a plurality of LED assemblies 11 of putting on the tool 2, and make it drop down onto one second to put on the tool 4, wherein, this second is put tool 4 and has a plurality of guide rails 41, and these a plurality of LED assemblies 11 drop on respectively in these a plurality of guide rails 41.At this, the included detailed step flow process of supplementary notes step (S03) sees also Fig. 9, the detailed step flow chart of step (S03) in addition.Such as Fig. 5, Fig. 6 and shown in Figure 9, during execution in step (S03), elder generation's execution in step (S031) is controlled this and first is pushed away tool 3 and move along a first direction, and makes its contact be arranged in this first last LED assembly 11 of putting these a plurality of LED assemblies 11 on the tool 2, wherein, as shown in the figure, in the welding technique of this LED assembly, this first direction can be X-direction or Y direction, and for preferred embodiments, this first direction is X-direction.Follow execution in step (S032) and step (S033), controlling unceasingly first pushes away tool 3 and moves along first direction, so that first push away tool 3 and move a correction distance, and be arranged in first and put these a plurality of LED assemblies 11 on the tool 2 and be subject to rear first and push away pushing of tool 3, and move to the first end place of putting tool 2.At this, push away the purpose that tool 3 moves this correction distance with first, be to be beneficial to the execution of next step so that LED assembly 11 is movable to the first end place of putting tool 2.

Behind the completing steps (S033), unceasingly, execution in step (S034) and step (S035), controlling unceasingly first pushes away tool 3 and moves along first direction, so that first push away tool 3 and move one first specific range, and be arranged in first and put these a plurality of LED assemblies 11 on the tool 2 and be subject to rear first and push away pushing of tool 3, drop down onto this and second put on this guide rail 41 of tool 4 so that be positioned at the first LED assembly 11 of putting tool 2 end places.In step (S034) and step (S035), push away the purpose that tool 3 moves this first specific range with first, be to limit a LED assembly 11 and drop down onto second and put on the guide rail 41 of tool 4, therefore, must this first specific range of definition the width that is a LED assembly.

And, after completing steps (S034) and the step (S035), then continue execution in step (S036), controlling this second puts tool 4 and moves along a second direction, so that second put tool 4 and move one second specific range, wherein, this second direction can be Y direction or X-direction, and for preferred embodiments, second direction can be Y direction.At last, execution in step (S037) then judges whether that first puts all LED assemblies 11 on the tool 2 and all drop down onto second and put on the tool 4, if, then carry out abovementioned steps (S04), if not, then repeat abovementioned steps (S034).In step (S034) and step (S035), this second is put tool 4 and move one second specific range in order to put the LED assembly 11 at tool 4 end places so that the second next guide rail 41 of putting tool 4 can regard to second, therefore, the length of this second specific range is defined as the summation of the spacing of the length of a LED assembly 11 and adjacent two guide rails 41.In addition, in the judgement formula of step (S037), be not that all LED assemblies 11 all are placed into second and put in the guide rail 41 of tool 4 if find, then the welding technique of LED assembly of the present invention will be got back to step (S034), push away tool 3 and will put LED assembly 11 on the tool 2 with first and push second and put in the guide rail 41 of tool 4 to use unceasingly first.

Behind the completing steps (S03), such as Fig. 3 A and shown in Figure 7, this welding technique continues execution in step (S04), and mobile this second put tool 4, makes it push away tool 5 with respect to one second; Then execution in step (S05) uses this second to push away tool 5 and promote to drop down onto this and second put these a plurality of LED assemblies 11 of tool 4, and makes it drop into simultaneously a plurality of holes 61 on the assembled material 6, and wherein, the rear surface of this assembled material 6 is pasted with an anti-welding adhesive tape; In addition, this second pushes away tool 5 and has a plurality of sons and push away tool 51, and this son pushes away tool 51 and can insert this and second put in this guide rail 41 of tool 4.At this, the included detailed step flow process of supplementary notes step (S05) sees also Figure 10, the detailed step flow chart of step (S05) in addition.Such as Fig. 7 and shown in Figure 10, during execution in step (S05), first execution in step (S051) is controlled this and second is pushed away tool 5 and move along this first direction, and makes its these a plurality of sons push away tool 51 to insert respectively second and put in these a plurality of guide rails 41 of tool 4; Then, execution in step (S052) is controlled unceasingly second and is pushed away tool 5 and move along first direction, all contacts this LED assembly 11 so that each height pushes away tool 51; Last execution in step (S053) is then controlled unceasingly second and is pushed away tool 5 and move along first direction, so that second push away tool 5 and promote simultaneously second these a plurality of LED assemblies 11 of putting on the tool 4, it is dropped in a plurality of holes 61 on this assembled material 6 simultaneously.

Behind the completing steps (S05), as shown in Figure 3A, successively, this welding technique is followed execution in step (S06), use a pressing element (not shown) to press down to drop into these a plurality of LED assemblies 11 in these a plurality of holes 61, make it be bonded in this anti-welding adhesive tape.Then, such as Fig. 3 A and shown in Figure 8, welding technique execution in step (S07) is printed a scolder (not shown) on a plurality of solder joints of a solder side of these a plurality of LED assemblies 11.And, behind completing steps (S07), namely follow execution in step (S08) and step (S09), with the front surface of assembled material 6 down, so that this solder side of LED assembly 11 down, and place assembled material 6 in the cover body 7, and be positioned on the surface of a copper wire layer 71.

After LED assembly 11 is placed in this copper wire layer 71, can carry out the welding procedure of LED assembly 11, be step (S10), place one to have the welding surroundings 8 of specified temp and carry out a reflow process cover body 7, so that these a plurality of LED assemblies 11 are welded in the surface of this copper wire layer 71.At last, then execution in step (S11) is taken out cover body 7 from the welding surroundings that this has specified temp, and removes the anti-welding adhesive tape 62 of the rear surface that attaches assembled material 6.So, as shown in Figure 8, these a plurality of LED assemblies 11 have been welded on this copper wire layer 71, and are positioned at this cover body 7; In addition, what must illustrate in addition is that to the assembled material 6 described in the step (S11), it is a Heat Conduction Material in step (S01), is commonly called as to be thermal conductive belt.Usually, thermal conductive belt is applied in the LED-backlit module widely, and the heat that produces when in order to assistance that the LED assembly is luminous leaves.In addition, because the LED-backlit module can be categorized as high-capacity LED backlight module and low-power LED-backlit module, wherein, when the welding technique of this LED assembly is applied to low-power LED-backlit module, can in this step (S11), this assembled material and this anti-welding adhesive tape together be removed; That is, in low-power LED-backlit module, can not need the assembled material of thermal conductive belt.

In addition, seeing also Figure 11, is the stereogram of a LED light fixture, and as shown in figure 11, the welding technique of LED assembly of the present invention also can be applicable to the technique of LED light fixture, in order to these a plurality of LED assemblies 11 are welded in the cover body 7 of LED light fixture.Wherein, for the LED light fixture, assembled material 6 in its technique is the white reflection sheet, therefore, when carrying out the welding technique of LED assembly of the present invention, first these a plurality of LED assemblies 11 are placed in a plurality of holes of white reflection sheet, again the white reflection sheet is placed the cover body 7 of LED light fixture, then carry out welding, so, can finish that LED assembly 11 is welded in the cover body 7 of LED light fixture.

Then, hereinafter, but one second embodiment of the welding technique of a kind of LED assembly of the present invention will be continued to introduce, see also Figure 12 A and Figure 12 B, but be the flow chart of the second embodiment of the welding technique of a kind of LED assembly of the present invention, and please consult simultaneously Figure 13, but be the process schematic representation of the first embodiment of the welding technique of LED assembly.In addition, because but but the second embodiment and not existing together of aforementioned the first embodiment only are the LED assembly is inserted the mode of the hole of assembled material, therefore, but when the second embodiment of the welding technique of describing LED assembly of the present invention, can be simultaneously with reference to Fig. 4, Fig. 5 and Fig. 8.

Such as Figure 12 A and shown in Figure 4, at first, the welding technique of this LED assembly is execution in step (S0A) and step (S0B), and a plurality of LED assemblies 11 are taken off from a strip 1, and light emitting surface that will these a plurality of LED assemblies 11 down, and it is arranged in one first in order puts on the tool 2.As shown in Figure 4, by a surface that this strip 1 is pasted with diaphragm down and tear this diaphragm, then the LED assembly 11 in the strip 1 just falls to this with its light emitting surface and first puts on the tool 2.When carrying out the welding technique of this LED assembly, can use an automatic stripping machine automatically completing steps (S0A) and step (S0B).

After completing steps (S0A) and step (S0B), such as Figure 12 A and shown in Figure 13, this welding technique continues execution in step (S0C), use one first to push away tool 3 and promote to be arranged in this first these a plurality of LED assemblies 11 of putting on the tool 2, and collocation is used a driving-belt 9 and so that these a plurality of LED assemblies 11 are dropped into a plurality of holes 61 on the assembled material 6 in order, wherein, the rear surface of this assembled material is pasted with an anti-welding adhesive tape 62.At this, the included detailed step flow process of supplementary notes step (S0C) sees also Figure 14 A and Figure 14 B in addition, is the detailed step flow chart of step (S0C).Such as Figure 14 A and shown in Figure 5, at first, execution in step (S0C1), controlling this, first to push away tool 3 mobile along a first direction (that is, X-direction), and make its contact be arranged in this first last LED assembly of putting these a plurality of LED assemblies 11 on the tool 2.Then, execution in step (S0C2) and step (S0C3), controlling unceasingly first pushes away tool 3 and moves along this first direction, so that first push away tool 3 and move a correction distance, and be arranged in first and put these a plurality of LED assemblies 11 on the tool 2 and be subject to rear first and push away pushing of tool 3, and move to the first end place of putting tool 2.At this, push away the purpose that tool 3 moves this correction distance with first, be to be beneficial to the execution of next step so that LED assembly 11 is movable to the first end place of putting tool 2.

Behind the completing steps (S0C3), unceasingly, execution in step (S0C4) and step (S0C5), controlling unceasingly first pushes away tool 3 and moves along first direction, so that first push away tool 3 and move one first specific range, and be arranged in first and put these a plurality of LED assemblies 11 on the tool 2 and be subject to rear first and push away pushing of tool 3, drop down onto on the surface of this assembled material 6 so that be positioned at the first LED assembly 11 of putting tool end place, and be sandwiched between this driving-belt 9 and the assembled material 6.In step (S0C4) and step (S0C5), push away the purpose 6 that tool 3 moves this first specific range with first, be to limit a LED assembly 11 and drop down onto on the surface of assembled material 6, therefore, the width that necessary this first specific range of definition is a LED assembly.

Then, continue execution in step (S0C6) and step (S0C7), driving-belt 9 constantly running also to drive LED assembly 11 mobile on the surface of assembled material 6, and LED assembly 11 is moved into first hole 61 places of these a plurality of holes 61 on the assembled material 6, and drops in this hole 61.Wherein, because driving-belt 9 is positioned at this assembled material 6 tops, and has a space between driving-belt 9 and the assembled material 6, the height in this space is slightly less than the thickness of this LED assembly 11, so LED assembly 11 can be sandwiched between this driving-belt 9 and this assembled material 6.In addition, because the skin-friction force of this driving-belt 9 is greater than the skin-friction force of this assembled material 6, so when driving-belt 9 running, it is mobile on the surface of assembled material 6 to drive LED assembly 11.

At last, execution in step (S0C8) then judges whether that first puts all LED assemblies 11 on the tool 2 and all drop in the hole 61 on the assembled material 6, if, then carry out abovementioned steps (S0D), if not, then repeat abovementioned steps (S0C4).In the judgement formula of step (S0C8), be not that all LED assemblies 11 all are placed in the hole 61 on the assembled material 6 if find, then the welding technique of LED assembly of the present invention will be got back to step (S0D), push away tool 3 and will put the surface that LED assembly 11 on the tool 2 pushes assembled material 6 with first to use unceasingly first.

After completing steps (S0C) is its detailed step, this welding technique then continues execution in step (S0D), assembled material 6 is moved to a pressing element (not shown) below, and use this pressing element to press down to drop into these a plurality of LED assemblies 11 in these a plurality of holes 61, make it be bonded in this anti-welding adhesive tape 62.Then, execution in step (S0E) is printed a scolder (not shown) on a plurality of solder joints of a solder side of these a plurality of LED assemblies 11.And, behind completing steps (S0E), such as Figure 12 B and shown in Figure 8, this welding technique is followed execution in step (S0F) and step (S0G), with the front surface of assembled material 6 down, so that this solder side of LED assembly 11 down, and place assembled material 6 in the cover body 7, and be positioned on the surface of a copper wire layer 71.

In addition, in abovementioned steps (S0C), also this assembled material 6 can be placed the carrying with a plurality of slotted eyes to put tool below, and so that these a plurality of slotted eyes that tool is put in carrying respectively with respect to a plurality of holes 61 of assembled material 6; So, when constantly running and when driving LED assembly 11 and moving of driving-belt 9, can utilize this slotted eye to assist guiding LED assembly 11 to drop in the hole 61.

After LED assembly 11 is placed in this copper wire layer 71, can carry out the welding procedure of LED assembly 11, be step (S0H), place one to have the welding surroundings of specified temp and carry out a reflow process cover body 7, so that these a plurality of LED assemblies 11 are welded in the surface of this copper wire layer 71.At last, then execution in step (S0I) is taken out cover body 7 from the welding surroundings that this has specified temp, and removes the anti-welding adhesive tape 62 of the rear surface that attaches assembled material 6.So, as shown in Figure 8, these a plurality of LED assemblies 11 have been welded on this copper wire layer 71, and are positioned at this cover body 7; In addition, what must illustrate in addition is, according to the different application of the welding technique of LED assembly of the present invention, step (S0A) described assembled material 6 to the step (S0I) can be a Heat Conduction Material (namely being commonly called as thermal conductive belt) or is the white reflection sheet.

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims

1. the welding technique of a LED assembly is characterized in that may further comprise the steps:

(1) a plurality of LED assemblies is taken off from a strip;

(2) light emitting surface that will these a plurality of LED assemblies and is arranged in order one first with it and puts on the tool down;

(3) use one first to push away tool and promote to be arranged in this first these a plurality of LED assemblies of putting on the tool, and make it drop down onto one second to put on the tool;

(4) move this and second put tool, make it push away tool with respect to one second;

(5) use this second to push away tool and promote to drop down onto this and second put these a plurality of LED assemblies of tool, and make it drop into simultaneously a plurality of holes on the assembled material, wherein, the rear surface of this assembled material is pasted with an anti-welding adhesive tape;

(6) use a pressing element to press down these a plurality of LED assemblies of dropping in these a plurality of holes, make it be bonded in this anti-welding adhesive tape;

(7) printing one scolder is on a plurality of solder joints of a solder side of these a plurality of LED assemblies;

(8) with the front surface of assembled material down, so that this solder side of LED assembly down;

(9) assembled material is placed in the cover body, and be positioned at the surface of a copper wire layer;

(10) cover body is placed one have the welding surroundings of specified temp and carry out a reflow and connect technique, so that these a plurality of LED components weldings are in the surface of this copper wire layer; And

(11) cover body is taken out from the welding surroundings that this has specified temp, and remove the anti-welding adhesive tape of the rear surface that attaches assembled material.

2. the welding technique of LED assembly as claimed in claim 1 it is characterized in that this step (3) described second puts tool and have a plurality of guide rails, and these a plurality of LED assemblies drops on respectively within these a plurality of guide rails.

3. the welding technique of LED assembly as claimed in claim 2 is characterized in that this step (3) more may further comprise the steps:

(31) control this and first push away tool and move along a first direction, and make its contact be arranged in this first last LED assembly of putting these upper a plurality of LED assemblies of tool;

(32) control unceasingly first and push away tool and move along this first direction, so that first pushes away tool and move a correction distance;

(33) be arranged in first and put these a plurality of LED assemblies on the tool and be subject to rear first and push away pushing of tool, and move to the first end place of putting tool;

(34) control unceasingly first and push away tool and move along first direction, so that first pushes away tool and move one first specific range;

(35) be arranged in first and put these a plurality of LED assemblies on the tool and be subject to rear first and push away pushing of tool, drop down onto this and second put on this guide rail of tool so that be positioned at the first LED assembly of putting tool end place;

(36) control this and second put tool and move along a second direction, so that second puts tool and move one second specific range; And

(37) judge whether that first puts all LED assemblies on the tool and all drop down onto second and put on the tool, if, then carry out abovementioned steps (4), if not, then repeat abovementioned steps (34).

4. the welding technique of LED assembly as claimed in claim 3 is characterized in that this first direction can be X-direction or Y direction.

5. the welding technique of LED assembly as claimed in claim 3 is characterized in that the width that this first specific range is a LED assembly.

6. the welding technique of LED assembly as claimed in claim 3 is characterized in that this second direction is Y direction or X-direction.

7. the welding technique of LED assembly as claimed in claim 3, the length that it is characterized in that this second specific range are the summation of the spacing of the length of a LED assembly and adjacent two guide rails.

8. the welding technique of LED assembly as claimed in claim 3 is characterized in that this step (4) described second pushes away tool and has a plurality of sons and push away tool, and this son pushes away tool and can insert this and second put in this guide rail of tool.

9. the welding technique of LED assembly as claimed in claim 8 is characterized in that this step (5) more may further comprise the steps:

(51) control this and second push away tool and move along this first direction, and make its this a plurality of sons push away tool to insert respectively second and put in these a plurality of guide rails of tool;

(52) control unceasingly second and push away tool and move along first direction, all contact this LED assembly so that each height pushes away tool; And

(53) control unceasingly second and push away tool and move along first direction, so that second push away tool and promote simultaneously second these a plurality of LED assemblies of putting on the tool, make it drop into simultaneously a plurality of holes on this assembled material.

10. the welding technique of LED assembly as claimed in claim 1, it is characterized in that this assembled material can be following any: reflector plate and thermal conductive belt.

11. the welding technique of LED assembly as claimed in claim 1 is characterized in that can being applied in the technique of high-capacity LED backlight module, low-power LED-backlit module and LED light fixture.

12. the welding technique of a LED assembly is characterized in that may further comprise the steps:

(A) a plurality of LED assemblies are taken off from a strip;

(B) light emitting surface that will these a plurality of LED assemblies and is arranged in order one first with it and puts on the tool down;

(C) use one first pushes away tool and promotes to be arranged in this first these a plurality of LED assemblies of putting on the tool, and collocation is used a driving-belt and so that these a plurality of LED assemblies are dropped into a plurality of holes on the assembled material in order, wherein, the rear surface of this assembled material is pasted with an anti-welding adhesive tape;

(D) assembled material is moved to pressing element below, and use this pressing element to press down and drop into these interior a plurality of LED assemblies of these a plurality of holes, make it be bonded in this anti-welding adhesive tape;

(E) printing one scolder is on a plurality of solder joints of a solder side of these a plurality of LED assemblies;

(F) with the front surface of assembled material down, so that this solder side of LED assembly down;

(G) assembled material is placed within the cover body, and be positioned at the surface of a copper wire layer;

(H) cover body is placed one have the welding surroundings of specified temp and carry out a reflow and connect technique, so that these a plurality of LED components weldings are in the surface of this copper wire layer; And

(I) cover body is taken out from the welding surroundings that this has specified temp, and remove the anti-welding adhesive tape of the rear surface that attaches assembled material.

13. the welding technique of LED assembly as claimed in claim 12 is characterized in that this step (C) more may further comprise the steps:

(C1) control this and first push away tool and move along a first direction, and make its contact be arranged in this first last LED assembly of putting these a plurality of LED assemblies on the tool;

(C2) control unceasingly first and push away tool and move along this first direction, so that first pushes away tool and move a correction distance;

(C3) be arranged in first and put these a plurality of LED assemblies on the tool and be subject to rear first and push away pushing of tool, and move to the first end place of putting tool;

(C4) control unceasingly first and push away tool and move along first direction, so that first pushes away tool and move one first specific range;

(C5) be arranged in first and put these a plurality of LED assemblies on the tool and be subject to rear first and push away pushing of tool, drop down onto on the surface of this assembled material so that be positioned at the first LED assembly of putting tool end place, and be sandwiched between this driving-belt and the assembled material;

(C6) driving-belt constantly turns round and drives the LED assembly and moves on the surface of assembled material;

(C7) the LED assembly is moved into first hole part of these a plurality of holes on the assembled material, and drops within this hole; And

(C8) judge whether that first puts all LED assemblies on the tool and all drop in the hole on the assembled material, if, then carry out abovementioned steps (D), if not, then repeat abovementioned steps (C4).

14. the welding technique of LED assembly as claimed in claim 13 is characterized in that this first direction can be X-direction or Y direction.

15. the welding technique of LED assembly as claimed in claim 13 is characterized in that the width that this first specific range is a LED assembly.

16. the welding technique of LED assembly as claimed in claim 12, it is characterized in that this assembled material can be following any: reflector plate and thermal conductive belt.

17. the welding technique of LED assembly as claimed in claim 12 is characterized in that the described driving-belt of this step (C) is positioned at this assembled material top, and has a space between driving-belt and the assembled material.

18. the welding technique of LED assembly as claimed in claim 16 is characterized in that the height in this space is slightly less than the thickness of this LED assembly, so that the LED assembly can be sandwiched between this driving-belt and this assembled material.

19. the welding technique of LED assembly as claimed in claim 18 is characterized in that the skin-friction force of this driving-belt is greater than the skin-friction force of this assembled material.

20. the welding technique of LED assembly as claimed in claim 12, it is characterized in that the described assembled material of this step (C) can place the carrying with a plurality of slotted eyes to put the tool below, assists these a plurality of LED assemblies to drop into respectively in these a plurality of holes with these a plurality of slotted eyes that utilize this carrying to put tool.