CN109860378A - A kind of white light LED part and preparation method thereof - Google Patents
A kind of white light LED part and preparation method thereof Download PDFInfo
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- CN109860378A CN109860378A CN201811591003.1A CN201811591003A CN109860378A CN 109860378 A CN109860378 A CN 109860378A CN 201811591003 A CN201811591003 A CN 201811591003A CN 109860378 A CN109860378 A CN 109860378A
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- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 31
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000741 silica gel Substances 0.000 claims abstract description 25
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 25
- 238000002955 isolation Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000000084 colloidal system Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 abstract description 15
- 230000006872 improvement Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 5
- 241001062009 Indigofera Species 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
The invention discloses a kind of white light LED parts and preparation method thereof.The white light LED part includes: bracket and the LED chip that is set on bracket；Wherein, LED chip is for issuing blue light；Arc convex glue-line is provided in the middle part of LED chip, the first end of LED chip is provided with the first arc-shaped concave glue-line, and the second end of LED chip is provided with the second arc-shaped concave glue-line；Any two in arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line are respectively arranged with red fluorescence powder, green emitting phosphor, another is layer of silica gel.White light LED part of the invention and preparation method thereof can be realized the uniform mixing of feux rouges, green light and blue light, and white light edge is avoided monochromatic aperture occur.
Description
Technical field
The present invention relates to LED technology fields more particularly to a kind of white light LED part and preparation method thereof.
Background technique
LED component is long because having many advantages, such as the high and low power consumption of luminous efficiency, service life, be widely used in TV, display,
The lighting areas such as car light and Landscape Lamp.Currently, the white light LED part of mainstream uses blue-light LED chip and yellow substantially in the market
YAG fluorescent powder encapsulates, and this LED component is to carry out second of quantum to blue light using yellow YAG phosphor to convert to be formed
The transfer efficiency of white light, white light is relatively low.
In order to promote the luminous efficiency and display capabilities of white light LED part, as shown in Figure 1, existing white light LED part is big
Mostly it is that red LED chip, green LED chip and blue-light LED chip are packaged together, utilizes feux rouges, green light and blue light
At white light.But since in existing white light LED part, red LED chip, green LED chip and blue-light LED chip are usual
Positioned at same level, the light that each LED chip issues is more dispersed, thus cause existing white light LED part there are feux rouges,
The problem of green light and blue light light mixing unevenness, and then white light edge is caused monochromatic aperture occur.
Summary of the invention
In view of the above-mentioned problems, a kind of white light LED part and preparation method thereof of the invention, can be realized feux rouges, green light and
The uniform mixing of blue light avoids white light edge from monochromatic aperture occur.
In order to solve the above technical problems, a kind of white light LED part of the invention, comprising: bracket and be set to the branch
LED chip on frame；Wherein, the LED chip is for issuing blue light；
Arc convex glue-line is provided in the middle part of the LED chip, the first end of the LED chip is provided with the first arc
Concave surface glue-line, the second end of the LED chip are provided with the second arc-shaped concave glue-line；
Any two in the arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line
A to be respectively arranged with red fluorescence powder, green emitting phosphor, another is layer of silica gel.
Compared with prior art, in the white light LED part, the arc convex glue-line of setting, LED chip in the middle part of LED chip
First end setting the first arc-shaped concave glue-line, LED chip second end setting the second arc-shaped concave glue-line, be collectively formed
Two concave surfaces press from both sides the fluorescence layer structure on a convex surface, so that the light being emitted in the middle part of LED chip is spread to both ends, from LED chip
The light of both ends outgoing is gathered to middle part；On the other hand, the white light LED part is in arc convex glue-line, the first arc-shaped concave glue-line
Red fluorescence powder, green emitting phosphor, arc convex glue-line, are respectively arranged with any two in the second arc-shaped concave glue-line
Another in one arc-shaped concave glue-line and the second arc-shaped concave glue-line is layer of silica gel, the blue light warp that LED chip can be made to issue
Red fluorescence powder is converted to feux rouges, green light is converted to through green emitting phosphor and transmits blue light through layer of silica gel, so that this is white
Light LED component can be realized the uniform mixing of feux rouges, green light and blue light, and white light edge is avoided monochromatic aperture occur, and be promoted mixed
The white light density of white light.
As an improvement of the above scheme, is provided between the arc convex glue-line and the first arc-shaped concave glue-line
One isolation glue-line, is provided with second between the arc convex glue-line and the second arc-shaped concave glue-line and glue-line is isolated.
As an improvement of the above scheme, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line are symmetrical arranged
In the two sides of the arc convex glue-line.
As an improvement of the above scheme, the concave surface of the first arc-shaped concave glue-line and the second arc-shaped concave glue-line to
The arc convex glue-line inclination.
As an improvement of the above scheme, the curvature of the first arc-shaped concave glue-line and the second arc-shaped concave glue-line half
Diameter is greater than the radius of curvature of the arc convex glue-line.
As an improvement of the above scheme, the LED chip includes formal dress type blue-light LED chip, flip chip type blue-light LED chip
Or vertical-type blue-light LED chip.
As an improvement of the above scheme, the bracket is provided with reflective bowl；
The LED chip, the arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue
Layer is set in the reflective bowl；
The highest point of the arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line is low
In the top of the reflective bowl.
The present invention also provides a kind of production methods of white light LED part, include the following steps:
LED chip is fixed on bracket；Wherein, the LED chip is for issuing blue light；
In the middle part coating colloid of the LED chip, arc convex glue-line is formed；
Respectively in the both ends coating colloid of the LED chip, the first arc-shaped concave glue-line and the second arc-shaped concave glue are formed
Layer；Wherein, any two in the first arc-shaped concave glue-line, the second arc-shaped concave glue-line and the arc convex glue-line
A to be mixed with red fluorescence powder, green emitting phosphor respectively, another is layer of silica gel.
Compared with prior art, in the production method of the white light LED part, arc convex glue is formed in the middle part of LED chip
Layer, LED chip both ends be respectively formed the first arc-shaped concave glue-line and the second arc-shaped concave glue-line so that shape in the LED chip
The fluorescence layer structure on a convex surface is pressed from both sides at two concave surfaces, so that the light being emitted in the middle part of LED chip is spread to both ends, from LED
The light of chip both ends outgoing is gathered to middle part；On the other hand, due in arc convex glue-line, the first arc-shaped concave glue-line and second
Any two in arc-shaped concave glue-line are respectively arranged with red fluorescence powder, green emitting phosphor, arc convex glue-line, the first arc
Another in concave surface glue-line and the second arc-shaped concave glue-line is layer of silica gel, and the blue light that LED chip can be made to issue is through red glimmering
Light powder is converted to feux rouges, green light is converted to through green emitting phosphor and transmits blue light through layer of silica gel, so that the white light LEDs
Device can be realized the uniform mixing of feux rouges, green light and blue light, and white light edge is avoided monochromatic aperture occur, and promote mixed white light
White light density.
As an improvement of the above scheme, it in the middle part coating colloid of the LED chip, is formed before arc convex glue-line,
Further include following steps:
The first isolation glue-line and the second isolation glue-line are fixed in the LED chip respectively, to the arc convex
Glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line are isolated.
As an improvement of the above scheme, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line are symmetrical arranged
In the two sides of the arc convex glue-line, and the concave surface of the first arc-shaped concave glue-line and the second arc-shaped concave glue-line to
The arc convex glue-line inclination.
Detailed description of the invention
Fig. 1 is the light mixing schematic diagram of existing white light LED part.
Fig. 2 is a kind of structural schematic diagram of white light LED part of the embodiment of the present invention 1.
Fig. 3 is a kind of structural schematic diagram of white light LED part of the embodiment of the present invention 2.
Fig. 4 is the light mixing schematic diagram of the white light LED part of the embodiment of the present invention 2.
Specific embodiment
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But the present invention can be with
It is different from the other modes of this description much to implement, those skilled in the art can be without violating the connotation of the present invention
Similar popularization is done, therefore the present invention is not limited by the specific embodiments disclosed below.
Clear, complete description is carried out to technical solution of the present invention with attached drawing combined with specific embodiments below.
Embodiment 1
Fig. 2 is referred to, is a kind of structural schematic diagram of white light LED part of the embodiment of the present invention 1.
As shown in Fig. 2, the white light LED part includes: bracket 1 and the LED chip being set on bracket 12；Wherein,
LED chip 2 is for issuing blue light；The middle part of LED chip 2 is provided with arc convex glue-line 31, the first end setting of LED chip 2
There is the first arc-shaped concave glue-line 32, the second end of LED chip 2 is provided with the second arc-shaped concave glue-line 33；Arc convex glue-line 31,
It is glimmering that any two in first arc-shaped concave glue-line 32 and the second arc-shaped concave glue-line 33 are respectively arranged with red fluorescence powder, green
Light powder, another in arc convex glue-line 31, the first arc-shaped concave glue-line 32 and the second arc-shaped concave glue-line 33 is layer of silica gel.
Wherein, in the white light LED part, LED chip 2 is fixed in the reflective bowl 11 of bracket 1 using adhesive 4.
In the white light LED part, when being provided with red fluorescence powder, the second arc-shaped concave in the first arc-shaped concave glue-line 32
When being provided with green emitting phosphor in glue-line 33, then arc convex glue-line 31 is layer of silica gel；At this point, the blue light warp that LED chip 2 issues
When crossing the first arc-shaped concave glue-line 32, the second arc-shaped concave glue-line 33 and arc convex glue-line 31, respectively obtain feux rouges, green light and
Blue light.
It should be understood that when being provided with green emitting phosphor, the second arc-shaped concave glue-line 33 in the first arc-shaped concave glue-line 32
In when being provided with red fluorescence powder, then arc convex glue-line 31 is layer of silica gel；When the first arc-shaped concave glue-line 32 is layer of silica gel, the
When being provided with red fluorescence powder in two arc-shaped concave glue-lines 33, then green emitting phosphor is provided in arc convex glue-line 31.It is red
Other set-up modes of fluorescent powder, green emitting phosphor and layer of silica gel can be derived from by above-mentioned set-up mode, no longer superfluous herein
It states.
Compared with prior art, in the white light LED part, the arc convex glue-line 31 that is arranged in the middle part of LED chip 2, LED core
The second arc-shaped concave glue-line 33 that the first arc-shaped concave glue-line 32 of first end setting of piece 2, the second end of LED chip 2 are arranged,
The fluorescence layer structure that two concave surfaces press from both sides a convex surface is collectively formed, so that the light being emitted in the middle part of LED chip 2 is spread to both ends,
The light being emitted from 2 both ends of LED chip is gathered to middle part；On the other hand, the white light LED part is in arc convex glue-line 31, first
Any two in arc-shaped concave glue-line 32 and the second arc-shaped concave glue-line 33 are respectively arranged with red fluorescence powder, green fluorescence
Powder, another in arc convex glue-line 31, the first arc-shaped concave glue-line 32 and the second arc-shaped concave glue-line 33 is layer of silica gel, energy
The blue light for enough issuing LED chip 2 is converted to feux rouges through red fluorescence powder, is converted to green light through green emitting phosphor and through silica gel
Layer transmits blue light, so that the white light LED part can be realized the uniform mixing of feux rouges, green light and blue light, avoids white light
There is monochromatic aperture in edge, and promotes the white light density of mixed white light.
Embodiment 2
Fig. 3 is referred to, is a kind of structural schematic diagram of white light LED part of the embodiment of the present invention 2.
As shown in figure 3, the white light LED part is other than comprising whole building blocks in embodiment 1, further includes:
Be provided with first between arc convex glue-line 31 and the first arc-shaped concave glue-line 32 and glue-line 51 be isolated, arc convex glue-line 31 with
The second isolation glue-line 52 is provided between second arc-shaped concave glue-line 33.
In this embodiment, glue-line 52 is isolated by arc convex glue-line 31, the first arc in the first isolation glue-line 51 and second
It is isolated between concave surface glue-line 32 and the second arc-shaped concave glue-line 33, can avoid between red fluorescence powder and green emitting phosphor
It mutually absorbs and scatters, moreover it is possible to avoid red fluorescence powder or green emitting phosphor from diffusing in layer of silica gel, and then the white light can be promoted
The whole lighting efficiency of LED component.
Preferably, as shown in figure 3, in order to which the white light for being mixed into the white light LED part is more uniform, in the white light LEDs
First arc-shaped concave glue-line 32 and the second arc-shaped concave glue-line 33 are symmetrically disposed on to the two sides of arc convex glue-line 31 in device,
So that the colour temperature of mixed white light all angles is uniform.
Further, as shown in Figure 3 and Figure 4, in order to promote the light mixing efficiency of the white light LED part, the white light LED part
In the concave surface 321 of the first arc-shaped concave glue-line 32 and the concave surface 331 of the second arc-shaped concave glue-line 33 incline to arc convex glue-line 31
Tiltedly, avoid the light reflected through the first arc-shaped concave glue-line 32 and the second arc-shaped concave glue-line 33 to external diffusion, hoisting light mixing effect
Rate.
Preferably, the convex surface 311 of the arc convex glue-line 31 is in arch bridge shape.
Preferably, as shown in Figure 3 and Figure 4, in the white light LED part, the first arc-shaped concave glue-line 32 and the second arc
The radius of curvature of concave surface glue-line 33 is greater than the radius of curvature of arc convex glue-line 31, so that through the first arc-shaped concave glue-line 32 and the
The light that two arc-shaped concave glue-lines 33 reflect has biggish light-emitting surface, and the light reflected through arc convex glue-line 31 more expands
It dissipates, and then increases light mixing region area, further hoisting light mixing efficiency.
Preferably, as shown in Figure 3 and Figure 4, in the white light LED part, bracket 1 is provided with reflective bowl；LED chip 2, arc
Shape convex surface glue-line 31, the first arc-shaped concave glue-line 32 and the second arc-shaped concave glue-line 33 are set in reflective bowl；Arc convex
The highest point of glue-line 31, the first arc-shaped concave glue-line 32 and the second arc-shaped concave glue-line 33 is lower than the top of reflective bowl.
In above-described embodiment, LED chip 2 includes formal dress type blue-light LED chip 2, flip chip type blue-light LED chip 2 or vertical
Type blue-light LED chip 2.
Embodiment 3
The present invention also provides a kind of production methods of white light LED part, include the following steps:
S1, LED chip is fixed on bracket；Wherein, LED chip is for issuing blue light；
S2, the middle part coating colloid in LED chip form arc convex glue-line；
S3, respectively in the both ends coating colloid of LED chip, form the first arc-shaped concave glue-line and the second arc-shaped concave glue
Layer；Wherein, any two in arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line are mixed with respectively
Red fluorescence powder, green emitting phosphor, it is another in arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line
A is layer of silica gel.
In the production method of the white light LED part, when being mixed with red fluorescence powder, second in the first arc-shaped concave glue-line
When being mixed with green emitting phosphor in arc-shaped concave glue-line, then arc convex glue-line is layer of silica gel；At this point, the indigo plant that LED chip issues
When light is by the first arc-shaped concave glue-line, the second arc-shaped concave glue-line and arc convex glue-line, feux rouges, green light and indigo plant are respectively obtained
Light.
It should be understood that being mixed with green emitting phosphor in the first arc-shaped concave glue-line, mixing in the second arc-shaped concave glue-line
When conjunction has red fluorescence powder, then arc convex glue-line is layer of silica gel；When the first arc-shaped concave glue-line is layer of silica gel, the second arc is recessed
When being mixed with red fluorescence powder in the glue-line of face, then green emitting phosphor is mixed in arc convex glue-line.Red fluorescence powder, green are glimmering
Light powder and other set-up modes of layer of silica gel can be derived from by above-mentioned set-up mode, and details are not described herein.
Compared with prior art, in the production method of the white light LED part, arc convex glue is formed in the middle part of LED chip
Layer, LED chip both ends be respectively formed the first arc-shaped concave glue-line and the second arc-shaped concave glue-line so that shape in the LED chip
The fluorescence layer structure on a convex surface is pressed from both sides at two concave surfaces, so that the light being emitted in the middle part of LED chip is spread to both ends, from LED
The light of chip both ends outgoing is gathered to middle part；On the other hand, due in arc convex glue-line, the first arc-shaped concave glue-line and second
Any two in arc-shaped concave glue-line are respectively arranged with red fluorescence powder, green emitting phosphor, arc convex glue-line, the first arc
Another in concave surface glue-line and the second arc-shaped concave glue-line is layer of silica gel, and the blue light that LED chip can be made to issue is through red glimmering
Light powder is converted to feux rouges, green light is converted to through green emitting phosphor and transmits blue light through layer of silica gel, so that the white light LEDs
Device can be realized the uniform mixing of feux rouges, green light and blue light, and white light edge is avoided monochromatic aperture occur, and promote mixed white light
White light density.
Preferably, it in the middle part coating colloid of LED chip, is formed before arc convex glue-line, further includes following steps:
Respectively by first isolation glue-line and second isolation glue-line be fixed in the LED chip, with to arc convex glue-line,
First arc-shaped concave glue-line and the second arc-shaped concave glue-line are isolated.
In this embodiment, glue-line is isolated by arc convex glue-line, the first arc-shaped concave in the first isolation glue-line and second
It is isolated between glue-line and the second arc-shaped concave glue-line, can avoid the mutual absorption between red fluorescence powder and green emitting phosphor
And scattering, moreover it is possible to avoid red fluorescence powder or green emitting phosphor from diffusing in layer of silica gel, and then the white light LED part can be promoted
Whole lighting efficiency.
Preferably, in step s3, it is convex to be symmetrically disposed on arc for the first arc-shaped concave glue-line and the second arc-shaped concave glue-line
The two sides of face glue-line, so that the white light being mixed into is more uniform.
Preferably, in step s3, the concave surface of the first arc-shaped concave glue-line and the second arc-shaped concave glue-line is to arc convex
Glue-line inclination, avoids the light reflected through the first arc-shaped concave glue-line and the second arc-shaped concave glue-line to external diffusion, hoisting light mixing
Efficiency.
The above described is only a preferred embodiment of the present invention, limitation in any form not is done to the present invention, therefore
All contents without departing from technical solution of the present invention, it is made to the above embodiment according to the technical essence of the invention any simply to repair
Change, equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of white light LED part characterized by comprising bracket and the LED chip being arranged on the bracket；Its
In, the LED chip is for issuing blue light；
Arc convex glue-line is provided in the middle part of the LED chip, the first end of the LED chip is provided with the first arc-shaped concave
Glue-line, the second end of the LED chip are provided with the second arc-shaped concave glue-line；
Any two point in the arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line
It is not provided with red fluorescence powder, green emitting phosphor, another is layer of silica gel.
2. white light LED part as described in claim 1, which is characterized in that the arc convex glue-line and first arc
It is provided with the first isolation glue-line between the glue-line of concave surface, is arranged between the arc convex glue-line and the second arc-shaped concave glue-line
There is the second isolation glue-line.
3. white light LED part as described in claim 1, which is characterized in that the first arc-shaped concave glue-line and described second
Arc-shaped concave glue-line is symmetrically disposed on the two sides of the arc convex glue-line.
4. white light LED part as claimed in claim 3, which is characterized in that the first arc-shaped concave glue-line and described second
The concave surface of arc-shaped concave glue-line is tilted to the arc convex glue-line.
5. white light LED part as claimed in claim 3, which is characterized in that the first arc-shaped concave glue-line and described second
The radius of curvature of arc-shaped concave glue-line is greater than the radius of curvature of the arc convex glue-line.
6. such as white light LED part according to any one of claims 1 to 5, which is characterized in that the LED chip includes formal dress
Type blue-light LED chip, flip chip type blue-light LED chip or vertical-type blue-light LED chip.
7. white light LED part as described in claim 1, which is characterized in that the bracket is provided with reflective bowl；
The LED chip, the arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line are set
It is placed in the reflective bowl；
The highest point of the arc convex glue-line, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line is lower than institute
State the top of reflective bowl.
8. a kind of production method of white light LED part, which comprises the steps of:
LED chip is fixed on bracket；Wherein, the LED chip is for issuing blue light；
In the middle part coating colloid of the LED chip, arc convex glue-line is formed；
Respectively in the both ends coating colloid of the LED chip, the first arc-shaped concave glue-line and the second arc-shaped concave glue-line are formed；Its
In, any two point in the first arc-shaped concave glue-line, the second arc-shaped concave glue-line and the arc convex glue-line
It is not mixed with red fluorescence powder, green emitting phosphor, another is layer of silica gel.
9. production method as claimed in claim 8, which is characterized in that in the middle part coating colloid of the LED chip, form arc
Further include following steps before the glue-line of shape convex surface:
Respectively by first isolation glue-line and second isolation glue-line be fixed in the LED chip, with to the arc convex glue-line,
The first arc-shaped concave glue-line and the second arc-shaped concave glue-line are isolated.
10. production method as claimed in claim 8, which is characterized in that the first arc-shaped concave glue-line and second arc
Shape concave surface glue-line is symmetrically disposed on the two sides of the arc convex glue-line, and the first arc-shaped concave glue-line and second arc
The concave surface of shape concave surface glue-line is tilted to the arc convex glue-line.
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| CN107195752A (en) * | 2017-05-26 | 2017-09-22 | 青岛海信电器股份有限公司 | A kind of LED, backlight module and display device |
| CN209389062U (en) * | 2018-12-25 | 2019-09-13 | 广东晶科电子股份有限公司 | A kind of white light LED part |
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