CN102214770A - Light-emitting diode (LED) planar light source support and light-emitting diode (LED) planar light source with same - Google Patents
Light-emitting diode (LED) planar light source support and light-emitting diode (LED) planar light source with same Download PDFInfo
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- CN102214770A CN102214770A CN 201010148046 CN201010148046A CN102214770A CN 102214770 A CN102214770 A CN 102214770A CN 201010148046 CN201010148046 CN 201010148046 CN 201010148046 A CN201010148046 A CN 201010148046A CN 102214770 A CN102214770 A CN 102214770A
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- light source
- planar light
- led
- accommodation space
- source support
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Abstract
The invention discloses a light-emitting diode (LED) planar light source support and a light-emitting diode (LED) planar light source with the same. The support comprises a substrate which is provided with a first side surface and a second side surface opposite to the first side surface, wherein the substrate is provided with an accommodating space which penetrates through the first side surface and the second side surface and is used for storing an LED chip; the substrate is also provided with a filling hole and a discharging hole which are formed beside the accommodating space; the filling hole and the discharging hole penetrate through the first side surface and the second side surface; and a first groove which is communicated with the filling hole and the accommodating space, and a second groove which is communicated with the discharging hole and the accommodating space are formed on the second side surface. The LED planar light source is provided with the support. During solidification, the volume shrinkage of the encapsulating adhesive in the accommodating space, which is caused by the solidification, can be compensated by the encapsulating adhesive in the first groove, the second groove, the filling hole and discharging hole, so that air bubbles are avoided; therefore, the performance of the light source is improved.
Description
Technical field
The present invention relates to the LED planar light source device, more particularly, relate to a kind of LED planar light source support and have the LED planar light source of this support.
Background technology
Led light source is as light source of new generation, have that luminosity is good, good directionality, be swift in response, advantage such as life-span length, luminous efficiency height, make it be widely used in various illumination occasions, for example field of backlights, common lighting field etc.
Because LED is a kind of electric light source, can only send optical fiber to half space, the maximum angle of emergent ray is less than 180 degree, and this can bring the adverse effect of two aspects: they are the light uneven illumination that light source sends is spared on the one hand, and dark around the centre is bright, be solar effect; Be that light source has strong glare effect on the one hand in addition, visual adaptation is poor, the application of restriction light source.In order to eliminate above-mentioned adverse effect, generally adopt illuminance uniformity, brightness uniformity and the elimination dazzle of optical lens that on led light source, increases through secondary optics design even repeatedly optical design to improve led light source, improve euphorosia, make led light source can be used as planar light source and use.Method relatively more commonly used at present is to install light guide plate or diffuse reflection transparent material etc. additional in white LED light source array front, though address the above problem to a certain extent, but can partly be absorbed during by light process light guide plate or diffuse reflection transparent panel, cause the whole lighting efficiency of light fixture lower, do not give play to the advantage of led light source, be unfavorable for energy-conserving and environment-protective yet.
Have the researcher that yellow fluorescent powder is coated on the flat glass at present, then at packaging LED chips on glass, this packaged type can obtain LED planar light source preferably.The general packaged type that adopts is: casting glue is injected installed and finished the support that is electrically connected earlier, then sheet glass is covered on casting glue final curing.But expand with heat and contract with cold because casting glue exists, because volume contraction usually produces bubble in the bonding place with glass, the existence of these bubbles produces adverse influence to the led light source optical property, influences the efficient of led light source when solidifying.
Summary of the invention
One of purpose of the present invention provides a kind of LED planar light source support, can prevent effectively that casting glue produces bubble when encapsulation, helps improving the utilance of light source.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of LED planar light source support, comprise substrate, described substrate have first side and with the first side second side surface opposite, described first side is the side of substrate in the beam projecting direction of LED planar light source, and described substrate has the accommodation space that is used to place led chip that runs through described first side and second side;
Also have on the described substrate and be used for the hand-hole that casting glue injects, and the tap that is used for casting glue or gas discharge, described hand-hole and tap are arranged on the next door of described accommodation space, and described tap and hand-hole run through described first side and second side;
Offer first cell body that is used to be communicated with described hand-hole and described accommodation space on described second side, and second cell body that is used to be communicated with described tap and described accommodation space.
In LED planar light source support of the present invention, the both sides that are distributed in described accommodation space of described hand-hole and tap symmetry.
In LED planar light source support of the present invention, the cross section that is parallel to described first side of described accommodation space is a square or rectangular, and described hand-hole and described tap are distributed in cornerwise direction of described square or rectangular.
In LED planar light source support of the present invention, the sidewall of described accommodation space has a step, and described step is positioned at the side near described second side.
In LED planar light source support of the present invention, described step has the step surface with described second parallel sided, and the inclined-plane that connects described step surface and described second side.
In LED planar light source support of the present invention, the angle of the described inclined-plane and second side is 30 to 60 degree.
In LED planar light source support of the present invention, be coated with reflective membrane on the described inclined-plane.
In LED planar light source support of the present invention, described reflective membrane is aluminium film, chromium film or nickel film.
In LED planar light source support of the present invention, described substrate is made by aluminium, copper, aluminium alloy, copper alloy or ceramic material.
Another object of the present invention is to provide a kind of LED planar light source, have above-described LED planar light source support, be provided with led chip in the accommodation space of described substrate, be marked with the casting glue that is used to encapsulate described led chip in the described accommodation space.
Implement LED planar light source support of the present invention and have the LED planar light source of this support, has following beneficial effect: in LED planar light source support of the present invention, have hand-hole and tap on the substrate, and first cell body that is communicated with hand-hole and accommodation space, second cell body that is communicated with tap and accommodation space, when LED encapsulates, casting glue injects accommodation space by hand-hole, gas and unnecessary casting glue are discharged by tap, during curing, casting glue in first cell body and second cell body and hand-hole and the tap can replenish owing to cause the contraction of the volume of the casting glue in the accommodation space after solidifying, avoid the generation of bubble, thereby improved the performance of light source.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the schematic perspective view of the preferred embodiment of LED planar light source support of the present invention;
Fig. 2 is the front view of the preferred embodiment of LED planar light source support of the present invention;
Fig. 3 is the rearview of the preferred embodiment of LED planar light source support of the present invention;
Fig. 4 is an A-A profile among Fig. 2;
Fig. 5 is a B portion enlarged drawing among Fig. 4.
Embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As 1 to shown in Figure 4, a preferred embodiment for LED planar light source support of the present invention, this light source bracket comprises substrate 1, substrate 1 have first side 11 and with first side, 11 second side surface opposite 12, wherein, first side 11 is the side of substrate 1 in the beam projecting direction of LED planar light source; Substrate 1 has the accommodation space 13 that is used to place led chip that runs through first side 11 and second side 12; Also have on the substrate 1 and be used for the hand-hole 14 that casting glue injects, and the tap 15 that is used for casting glue or gas discharge, hand-hole 14 and tap 15 are arranged on the next door of described accommodation space 13, and tap 15 and hand-hole 14 run through first side 11 and second side 12; Offer first cell body 16 that is used to be communicated with described hand-hole 14 and described accommodation space 13 on second side 12, and second cell body 17 that is used to be communicated with tap 15 and described accommodation space 13.
In the present embodiment, the cross section that is parallel to described first side 11 of accommodation space 13 is square, hand-hole 14 and tap 15 are distributed in foursquare cornerwise direction, this is in order to guarantee the longest distance that has between hand-hole 14 and the tap 15, when encapsulation, casting glue is injected by hand-hole 14, because tap 15 from hand-hole 14 farthest, so be filled at last, in the time of can guaranteeing that like this accommodation space 13 is filled, casting glue just can be overflowed by tap 15, can guarantee also that in addition the air in the accommodation space 13 and second cell body can be discharged fully.In the reality, also can be with the both sides that are arranged on accommodation space 13 of hand-hole 14 and tap 15 symmetries.In practice, the cross section that is parallel to described first side 11 of accommodation space 13 also can be a rectangle.
In the present embodiment, led chip is installed for convenience, the sidewall of accommodation space 13 is provided with a step 18, step 18 is near a side of second side 12, also be accommodation space 13 at the opening on first side 11 greater than its opening on second side 12, during encapsulation, the glass plate that scribbles phosphor powder layer is placed on the step 18.
Referring to Fig. 4 and Fig. 5, in the present embodiment, the light that utilizes led chip to send for maximum possible, step 18 has the step surface 181 parallel with second side 12, and the inclined-plane 182 that connects the step surface 181 and second side 12, on this inclined-plane, be coated with reflective membrane, be used to reflect the light that led chip sends, in the present embodiment, the angle of the inclined-plane 182 and second side 12 is 53 degree.In practice, can be 30 degree or 60 degree, perhaps in 30 to 60 degree scopes.Reflective membrane can be aluminium film, chromium film or nickel film.
The substrate of LED planar light source support of the present invention can be by being made by aluminium, copper, aluminium alloy, copper alloy or ceramic material.
In practice, the shape of the accommodation space on the substrate 1 of LED planar light source support is not limited to shape in this enforcement, can be according to led chip and needs setting.
Casting glue can be a transparent resin, perhaps is mixed with the resin of yellow fluorescent powder.
When LED encapsulates, led chip welds or is mounted on the pcb board, second side 12 of substrate 1 is attached on the pcb board, led chip is positioned at the centre of accommodation space 13, the glass plate that is coated with fluorescent material is put on the step surface 181 by first side 11, led chip is enclosed between pcb board and the glass plate, casting glue injects accommodation space 13 by hand-hole 14 then, fill the space between pcb board and the glass plate, gas and unnecessary casting glue are discharged by tap 15, during curing, casting glue in first cell body 16 and second cell body 17 and hand-hole 14 and the tap 15 can replenish owing to cause the contraction of the volume of the casting glue in the accommodation space 13 after solidifying, avoid the generation of bubble, thereby improved the performance of light source.
An embodiment of LED planar light source of the present invention is the LED planar light source of the LED planar light source support of employing the foregoing description, be provided with led chip in the accommodation space 13 of substrate 1, be marked with the casting glue of the described led chip of encapsulation in the accommodation space 13, this casting glue is transparent resin or the resin that is mixed with yellow fluorescent powder.
In conjunction with the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. LED planar light source support, comprise substrate, described substrate have first side and with the first side second side surface opposite, described first side is the side of substrate in the beam projecting direction of LED planar light source, and described substrate has the accommodation space that is used to place led chip that runs through described first side and second side;
It is characterized in that,
Also have on the described substrate and be used for the hand-hole that casting glue injects, and the tap that is used for casting glue or gas discharge, described hand-hole and tap are arranged on the next door of described accommodation space, and described tap and hand-hole run through described first side and second side;
Offer first cell body that is used to be communicated with described hand-hole and described accommodation space on described second side, and second cell body that is used to be communicated with described tap and described accommodation space.
2. LED planar light source support according to claim 1 is characterized in that, the both sides that are distributed in described accommodation space of described hand-hole and tap symmetry.
3. LED planar light source support according to claim 2, it is characterized in that, the cross section that is parallel to described first side of described accommodation space is a square or rectangular, and described hand-hole and described tap are distributed in cornerwise direction of described square or rectangular.
4. according to each described LED planar light source support of claim 1 to 3, it is characterized in that the sidewall of described accommodation space has a step, described step is positioned at the side near described second side.
5. LED planar light source support according to claim 4 is characterized in that described step has the step surface with described second parallel sided, and the inclined-plane that connects described step surface and described second side.
6. LED planar light source support according to claim 5 is characterized in that, the angle of the described inclined-plane and second side is 30 to 60 degree.
7. LED planar light source support according to claim 5 is characterized in that, is coated with reflective membrane on the described inclined-plane.
8. LED planar light source support according to claim 7 is characterized in that, described reflective membrane is aluminium film, chromium film or nickel film.
9. LED planar light source support according to claim 1 is characterized in that described substrate is made by aluminium, copper, aluminium alloy, copper alloy or ceramic material.
10. a LED planar light source is characterized in that, has each described LED planar light source support of claim 1 to 9, is provided with led chip in the accommodation space of described substrate, is marked with the casting glue that is used to encapsulate described led chip in the described accommodation space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010148046 CN102214770B (en) | 2010-04-09 | 2010-04-09 | Light-emitting diode (LED) planar light source support and light-emitting diode (LED) planar light source with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010148046 CN102214770B (en) | 2010-04-09 | 2010-04-09 | Light-emitting diode (LED) planar light source support and light-emitting diode (LED) planar light source with same |
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| Publication Number | Publication Date |
|---|---|
| CN102214770A true CN102214770A (en) | 2011-10-12 |
| CN102214770B CN102214770B (en) | 2013-04-17 |
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| CN 201010148046 Expired - Fee Related CN102214770B (en) | 2010-04-09 | 2010-04-09 | Light-emitting diode (LED) planar light source support and light-emitting diode (LED) planar light source with same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531669A (en) * | 2012-07-05 | 2014-01-22 | 展晶科技(深圳)有限公司 | Method for manufacturing light emitting diode packaging structure |
| CN105336835A (en) * | 2015-11-27 | 2016-02-17 | 宏齐光电子(深圳)有限公司 | LED packaging structure and packaging method thereof |
| CN105514248A (en) * | 2016-01-06 | 2016-04-20 | 宏齐光电子(深圳)有限公司 | High white light and low light decay LED and preparation method thereof |
| CN106156716A (en) * | 2015-04-24 | 2016-11-23 | 上海箩箕技术有限公司 | Fingerprint recognition system and forming method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577301A (en) * | 2008-09-05 | 2009-11-11 | 佛山市国星光电股份有限公司 | Package method for white light LED and LED device manufactured by package method for white light LED |
-
2010
- 2010-04-09 CN CN 201010148046 patent/CN102214770B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577301A (en) * | 2008-09-05 | 2009-11-11 | 佛山市国星光电股份有限公司 | Package method for white light LED and LED device manufactured by package method for white light LED |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531669A (en) * | 2012-07-05 | 2014-01-22 | 展晶科技(深圳)有限公司 | Method for manufacturing light emitting diode packaging structure |
| CN103531669B (en) * | 2012-07-05 | 2016-09-07 | 北京时代浩鼎科技股份有限公司 | The manufacture method of package structure for LED |
| CN106156716A (en) * | 2015-04-24 | 2016-11-23 | 上海箩箕技术有限公司 | Fingerprint recognition system and forming method thereof |
| CN105336835A (en) * | 2015-11-27 | 2016-02-17 | 宏齐光电子(深圳)有限公司 | LED packaging structure and packaging method thereof |
| CN105514248A (en) * | 2016-01-06 | 2016-04-20 | 宏齐光电子(深圳)有限公司 | High white light and low light decay LED and preparation method thereof |
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| CN102214770B (en) | 2013-04-17 |
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