CN1996624A - Light-emitting diode-LED and its encapsulation method and application - Google Patents
Light-emitting diode-LED and its encapsulation method and application Download PDFInfo
- Publication number
- CN1996624A CN1996624A CNA2006100001048A CN200610000104A CN1996624A CN 1996624 A CN1996624 A CN 1996624A CN A2006100001048 A CNA2006100001048 A CN A2006100001048A CN 200610000104 A CN200610000104 A CN 200610000104A CN 1996624 A CN1996624 A CN 1996624A
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- led
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- front surface
- cylinder
- tube core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
- H01L2924/1815—Shape
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Abstract
This invention discloses one tube chip transparent part composed of three LED with different shapes, wherein, the transparent part tail is of column part of fix leg; the transparent top is of transparent lens by infration; the transparent part middle reflects all light from side of tube to front surface polymer part; the tube sends all light to front surface to refract lights onto LED front; This LED changes can get different refraction angle.
Description
One, relates to the field
The present invention relates to a kind of semiconductor light-emitting-diode, i.e. the multiple application of the method for packing of LED, and LED and LED.
Two, technical background
For many years the profile major part of LED all is the cylinder ball of ining succession half, and square column is connecting blockage, and form such as straw hat shape.The LED of these profiles, the light of tube core directive side has directly passed the cylinder scattering and has come out, the LED of straw hat shape, the angle of scattering of light is very big, in the side of LED even the position after also leaning on, can both see the light that tube core sends.Present common LED almost can not all scatter to the light that tube core sends the place ahead of LED.For a lot of LED application luminaires such as traffic lights, shot-light, torch, and display screen, scatter to the only otiose light of side, be a kind of waste and shortcoming, also must add a reflective mirror sometimes, this part light is reflexed to the place ahead of light fixture.And the display screen made from common LED, perhaps the light-emitting area of light fixture has very big space between each LED, and these spaces can not be luminous, therefore can not connect into a complete light-emitting area.
Three, Fa Ming content
The object of the present invention is to provide a kind of LED that light-focusing function is arranged, this LED profile variation is many, the light overwhelming majority that tube core sends all the past surface scattering is gone out, utilize this LED can be arranged into complete light-emitting area or luminous line, and light-emitting area can form various three-dimensional contouring, thereby can produce a variety of brand-new light fixtures and display screen etc.
The present invention is achieved in that because the difference of principle, the transparent body around the new LED tube core by three difformities and not the part of same-action form.The afterbody of the transparent body is the cylinder part of anchor leg or pin, and the front portion of the transparent body is the lens component that light scatter is gone out, and the centre of the transparent body is the optically focused part that all light of tube core directive side all is totally reflected to front surface.The front surface of LED is the sphere of projection or the curved surface of the multi-disc face of cylinder or various moulding for example ellipsoid etc. or plane.The cross section that cuts along the position, corner of front surface is greater than the cross section of cylinder.Side between front surface and the cylinder, from the edge of cylinder, smooth extension extends to front surface, perhaps extends with the form of multi-disc curved surface combination to extend to front surface.The edge of placing the reflector of tube core is positioned the corresponding end face of cylinder or is lower than the corresponding end face of cylinder, and the peak of tube core is lower than the edge of reflector.A tube core can be placed in the reflector, also a plurality of tube cores can be placed.
The light of tube core directive side, a part be reflected the cup reflex to front surface, from the reflector edge, shine the light of side and the angle between the cylinder end face and increase gradually.For taper seat that fixed slope is arranged or flat side, as long as from the reflector edge, shine the light of side and the angle between the side, (refractive index of epoxy resin is generally 1.56 less than the critical angle that forms total reflection, the refractive index of air is 1, critical angle is approximately 50 ° of degree), whole side all less than the critical angle that forms total reflection, is exactly a fully reflecting surface just.Side for the curved surface shaped that forms by curve rotation or stretching, according to the refractive index of LED transparent material and the refractive index of air, analytical calculation, measurement are carried out in a plurality of main position to the side, angle between the light that makes each position of side and shine, all less than the critical angle that forms total reflection, whole like this side is exactly a fully reflecting surface.New LED, all light of tube core directive side all are totally reflected to front surface by the side.
Here the angle that is noted that the edge of front surface and lateral edge connecting portion especially can not be excessive, in order to avoid through arriving the light of front surface after the total reflection of side, form total reflection on front surface.Through arriving all light of front surface after the total reflection of side, and the angle between the front surface, form the critical angle of total reflection greater than transparent material, on front surface, there is not the total reflection of light.
All light that tube core sends all converge to front surface, and come out according to law of refraction the past surface refraction, scatter to the place ahead of LED.The same with common light refraction, when being accompanied by light refraction and going out, still have very a spot of light in the past in the return reflection surface transparent material.
By the shape of adjustment front surface and side, and the distance between front surface and the tube core, just can obtain to have orthographic projection different astigmatic angles, front surface is many kinds LED difform, the past surface light emitting.LED places a plurality of tube cores and lead-in wire in inside, just can produce the pixel pipe or the Colour-change light source of display screen of new generation.
Because the transparent body of LED is made of three parts, and front surface is bigger than the cylinder of anchor leg, therefore face the orthographic projection of the front surface that front surface sees, can make a variety of shapes, for example circular, oval, rectangle, regular hexagon, regular pentagon, square, triangle or the like.The orthographic projection that utilizes front surface is the LED of different shapes such as rectangle, square, triangle, make the side of LED, the side that is pasting another LED is arranged in together, just can be the light-emitting area of LED, be arranged into difform lines, plane or be arranged into the curved surface etc. of the face of cylinder, sphere, moulding arbitrarily, and can not having non-luminous space on the light-emitting area, whole or lines are all-round luminous.For some special light fixtures or special formed light-emitting area, the orthographic projection of front surface even can also make various irregular peripheral shapes.
Because this LED is only outwards luminous from front surface, light extraction efficiency is higher, brighter, and can be arranged into the difform display surface that does not have non-luminous space, this just lays a good foundation for making LED display of new generation, and LED display of new generation will have advantages such as high definition, high brightness, various brand-new moulding.Even if adopt circular LED, owing to the interference of the stray light that has not had the side to send, picture is also clear bright than the display screen of common LED.
The high light-emitting efficiency of this LED, the light-emitting area moulding that can arrange is flexibly also laid a good foundation for making LED artistic lamp, indoor and outdoor lighting light fixture, signal lamp and the advertising lamp etc. with the various moulding of brand new, various lighting effects of new generation.
Utilize this LED, can also make the ornament that face is luminous or line is luminous of the various moulding of a new generation.
When encapsulating common LED, the top of tube core together with lead-in wire or pin is fixed in the mould, injects the transparent material that mixes up, transparent material takes off LED after solidifying in mould.The mould that encapsulates this LED is made of two parts, two parts axially separating up and down along LED of mould.The interface of mould can be made on the interface of front surface and side, and the perhaps the thickest position of LED is perhaps on the face that the drift angle of front surface constitutes.In the encapsulation process, after transparent material solidified, mould separated up and down, by promoting lead-in wire or pin or the afterbody of LED, the demoulding was come out.
Compare with the LED of other shapes, the present invention utilizes the total reflection principle of light, make the light of tube core directive side, all reflex to front surface, the light that has thoroughly solved the LED side problem of scattering and disappearing has realized the full optically focused that light that tube core sends all is utilized first, has improved brightness and the light extraction efficiency of LED, and create a kind of brand-new LED principle of luminosity, and brand-new many kinds LED pioneeringly.Utilize that LED of the present invention makes, the not difform lines in luminous space or light-emitting area, the display surface of plane form, perhaps light-emitting area, the display surface of the forms such as curved surface of the face of cylinder, sphere, arbitrary shape, be the application of LED in every field, brought more perfectly effect, higher performance index have been opened up brand-new road and finer prospect.Therefore the present invention fundamentally promotes LED itself greatly, and LED is in the technological progress of a plurality of applications, for the development in an all-round way of semiconductor lighting is laid a good foundation.
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Four, description of drawings
Fig. 1, be the principle schematic of the LED that astigmatic angle is bigger among the present invention.
Fig. 2, be the principle schematic of the smaller LED of astigmatic angle among the present invention.
Fig. 3, be that the orthographic projection of front surface is orthohexagonal LED schematic diagram among the present invention.
Fig. 4, be that the orthographic projection of front surface is foursquare LED schematic diagram among the present invention.
Fig. 5, be that the orthographic projection of front surface is leg-of-mutton LED schematic diagram among the present invention.
Fig. 6, be that front surface among the present invention is the LED schematic diagram of rectangular planes.
Fig. 7, be that the orthographic projection of front surface is the schematic diagram of rectangular adopting surface mounted LED among the present invention.
Five, embodiment
Front surface among Fig. 1 (1) is a sphere, and the centre of sphere is just in time in the top of tube core (4), and the diameter at sphere (1) edge is greater than the diameter of cylinder (3).The interface of two parts of mould is made on the plane that the edge of sphere (1) constitutes.Conical side (2) and tube core (4) are penetrated the angle between the next light (7), and all less than the critical angle that can form total reflection, side (2) are fully reflecting surfaces.Through arriving the light of sphere (1) after side (2) reflection, and the angle between the sphere (1), all greater than the critical angle that can form total reflection, these light can not form total reflection again on sphere (1), at normal (5) one side other all directly the refraction go out.Because tube core (4) is below the centre of sphere, tube core (4) is the light (6) of directive sphere (1) directly, below normal (5), through the refraction of sphere (1), all turns to the place ahead of LED.
Front surface among Fig. 2 (1) is a sphere, and the radius of sphere is bigger, and the centre of sphere is still in the top of tube core (4), the centre of sphere also can move on to tube core below, front surface (1) also can be the plane.From with the connecting portion of cylinder (3), conical side (2) is crooked glossily, extension expands to sphere (1), the tapering of the conical side (2) of close cylinder (3) changes greatly, and such design is also can realize total reflection for the light (7) of the close cylinder (3) that shines side (2).Side (2) is reflective just as one, the cover of optically focused, and the light of tube core (4) directive side is all reflexed on the sphere (1), arrives the light of sphere (1), at normal (5) one side other the refraction go out.Because sphere (1) is smaller with respect to the angle that tube core (4) scatters, after the refraction through sphere (1), the angle that light scatters is also smaller, so this LED can be in light scatter to the smaller angular range.
LED shown in Figure 3, the orthographic projection of front surface is a regular hexagon, and its front surface is a sphere, and its side is by 1 taper seat, and by 6 curved surfaces that are drawn into along the track of curve by curve, cutting connects and constitutes.Its side can all reflex to front surface to the light from tube core.Orthohexagonal LED can be arranged into a complete flat light-emitting area, uses with the LED of regular pentagon, can also connect into the luminous sphere on a similar football surface, can be used in to make various complete face alight tools.
LED shown in Figure 4, the orthographic projection of front surface is a square, and its front surface is connected to form by 4 faces of cylinder, and its side is made up of 4 plate planes.Utilize this face of cylinder and side combining form, can also make regular pentagon, regular hexagon and leg-of-mutton LED shown in Figure 5.Foursquare LED can be arranged into whole luminous plane, straight line, the face of cylinder.The inner placement after a plurality of tube cores and the lead-in wire just can be produced the square pixels pipe of a new generation.
LED shown in Figure 5, the orthographic projection of front surface is leg-of-mutton LED, and its front surface is connected to form by 3 faces of cylinder, and the side is made up of 3 plate planes.Leg-of-mutton LED can be arranged into whole luminous sphere, the face of cylinder, plane.
LED shown in Figure 6, front surface are rectangular planes, and 4 sides are the curved surfaces that stretch.Utilize this side and plane, can also make the LED of shapes such as regular pentagon, regular hexagon, square, triangle.
Adopting surface mounted LED shown in Figure 7, its front surface is made of the face of cylinder, and its side is made up of 2 plate planes.Two other side is the same with common LED, but these two sides of a plurality of LED can be connected to each other together, and luminous straight line, perhaps plane form a whole.LED among other figure changes lead-in wire into pin, and the cylinder of anchor leg and the whole transparent body do short, do for a short time, also can make SMD LED.
Claims (8)
1, a kind of light-emitting diode-LED, tube core is encapsulated in the inside of the transparent body, the light that tube core sends scatters out by the transparent body, it is characterized in that: the LED transparent body is made up of three difform parts, the afterbody of the transparent body is the cylinder of anchor leg or pin, front surface is the sphere of projection, the perhaps multi-disc face of cylinder, perhaps curved surface, or plane, the cross section that cuts along the position, corner of front surface, cross section greater than the cylinder around the pin, side between front surface and the cylinder, edge from cylinder, smooth extension extends to front surface, perhaps extends with the form of multi-disc curved surface combination to extend to front surface, and the edge of placing the reflector of tube core is positioned the end face of cylinder, perhaps be lower than the end face of cylinder, the peak of tube core is lower than the edge of reflector, can place a tube core in the reflector, also can place a plurality of tube cores, all light that tube core sends all converge to front surface, and the past surface refraction is to the place ahead of LED.
2, according to the light-emitting diode-LED of claim 1 regulation, it is characterized in that: the side between front surface and the cylinder, and tube core shines the angle between all light of side, forms the critical angle of total reflection less than the LED transparent material.
3, according to claim 1 or the 2 light-emitting diode-LED that stipulate, it is characterized in that: after the offside reflection between front surface and the cylinder, arrive all light of front surface, and the angle between the front surface, the critical angle of total reflection formed greater than the LED transparent material.
4, a kind of luminous line or light-emitting area or display surface, LED is arranged on luminous line or light-emitting area or the display surface with the form of array, it is characterized in that: the LED that arranges on luminous line or light-emitting area or the display surface is claim 1 or 2 or 3 LED that limit.
5, a kind of display screen, LED is arranged on the display surface with the form of array, it is characterized in that: the LED that arranges on the display surface of display screen is claim 1 or 2 or 3 LED that limit.
6, a kind of light fixture, LED is installed on the light fixture, it is characterized in that: the LED that is installed on the light fixture is claim 1 or 2 or 3 LED that limit.
7, a kind of ornament, LED is arranged on the ornament, it is characterized in that: the LED that arranges on the ornament is claim 1 or 2 or 3 LED that limit.
8, the method for packing of a kind of light-emitting diode-LED, during packaged LED, tube core is fixed in the mould together with lead-in wire or pin, the transparent material that injection mixes up, after transparent material solidifies, in mould, take off LED, it is characterized in that: that this method encapsulates is claim 1 or 2 or 3 LED that limit, the mould of packaged LED is made of two parts, after transparent material solidifies, two parts of mould are axially separated up and down along LED's, by lead-in wire or pin or the afterbody of top LED, the demoulding are come out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100001048A CN1996624A (en) | 2006-01-04 | 2006-01-04 | Light-emitting diode-LED and its encapsulation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100001048A CN1996624A (en) | 2006-01-04 | 2006-01-04 | Light-emitting diode-LED and its encapsulation method and application |
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| Publication Number | Publication Date |
|---|---|
| CN1996624A true CN1996624A (en) | 2007-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100001048A Pending CN1996624A (en) | 2006-01-04 | 2006-01-04 | Light-emitting diode-LED and its encapsulation method and application |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049475A1 (en) * | 2007-09-24 | 2009-04-23 | Shenzhen Jiuzhou Optoelectronics Co., Ltd | An optical lens |
| CN102116427A (en) * | 2010-12-16 | 2011-07-06 | 叶逸仁 | Preparation method for integrally sealed LED (light-emitting diode) light with diffuser |
| CN102169947A (en) * | 2010-01-29 | 2011-08-31 | 惠州科锐光电有限公司 | Wide angle oval light emitting diode package |
| CN101299451B (en) * | 2008-06-26 | 2012-05-02 | 罗维鸿 | Encapsulation structure of LED |
| CN102748705A (en) * | 2011-04-20 | 2012-10-24 | 比亚迪股份有限公司 | Condenser lens |
| CN103943766A (en) * | 2014-05-15 | 2014-07-23 | 刘如松 | LED (Light Emitting Diode) light source provided with light distribution device |
-
2006
- 2006-01-04 CN CNA2006100001048A patent/CN1996624A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049475A1 (en) * | 2007-09-24 | 2009-04-23 | Shenzhen Jiuzhou Optoelectronics Co., Ltd | An optical lens |
| CN101299451B (en) * | 2008-06-26 | 2012-05-02 | 罗维鸿 | Encapsulation structure of LED |
| CN102169947A (en) * | 2010-01-29 | 2011-08-31 | 惠州科锐光电有限公司 | Wide angle oval light emitting diode package |
| CN102169947B (en) * | 2010-01-29 | 2016-06-01 | 惠州科锐光电有限公司 | Wide angle oval light emitting diode package |
| CN102116427A (en) * | 2010-12-16 | 2011-07-06 | 叶逸仁 | Preparation method for integrally sealed LED (light-emitting diode) light with diffuser |
| CN102116427B (en) * | 2010-12-16 | 2013-04-17 | 叶逸仁 | Preparation method for integrally sealed LED (light-emitting diode) light with diffuser |
| CN102748705A (en) * | 2011-04-20 | 2012-10-24 | 比亚迪股份有限公司 | Condenser lens |
| CN102748705B (en) * | 2011-04-20 | 2014-09-17 | 比亚迪股份有限公司 | Condenser lens |
| CN103943766A (en) * | 2014-05-15 | 2014-07-23 | 刘如松 | LED (Light Emitting Diode) light source provided with light distribution device |
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