CN103814449B - Change platelet, there is the device launching radiation of this conversion platelet and for the method manufacturing this conversion platelet - Google Patents
Change platelet, there is the device launching radiation of this conversion platelet and for the method manufacturing this conversion platelet Download PDFInfo
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- CN103814449B CN103814449B CN201280045661.5A CN201280045661A CN103814449B CN 103814449 B CN103814449 B CN 103814449B CN 201280045661 A CN201280045661 A CN 201280045661A CN 103814449 B CN103814449 B CN 103814449B
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Abstract
The present invention proposes the conversion platelet (1) of a kind of semiconductor device (10) for launching radiation, wherein changes platelet (1) and comprises the stock (2) being made up of glass, is provided with at least one opening (3) in described stock.Transition material (4) is introduced at least one opening.Further it is proposed that one has the device (10) launching radiation of this conversion platelet (1).Further it is proposed that the method that one is used for manufacturing this conversion platelet (1).
Description
Technical field
The present invention relates to the conversion platelet of a kind of device for launching radiation.Additionally, the present invention relates to
A kind of device launching radiation with this conversion platelet and a kind of for this conversion platelet
Manufacture method.
Background technology
In order to produce the semiconductor device launching white light it is possible that the half of blue radiation will be launched
Conductor chip conversion layer covers, and described conversion layer converts blue light into the light that wavelength is longer.Such as,
White light is produced by the superposition of blue and yellow radiation.Here, the thickness of conversion layer determines
The blue light of the mixed radiation of white and the share of gold-tinted.Here, for specific desired in vain
It is necessary that control accurately to converting layer thicknesses for color tone.But, to this of layer thickness
Plant control to be difficulty and realize with only expending.Especially, the distribution method this adversely expended
It is required.
Summary of the invention
It is an object of the invention to, propose one conversion platelet, can produce by described conversion platelet
Desired white color.Additionally, it is an object of the invention to, it is little that proposition one has this conversion
The semiconductor device launching radiation of plate.Additionally, it is an object of the invention to, a kind of simplification is proposed
For the method manufacturing this conversion platelet.
Described purpose realizes by having the conversion platelet of the feature of embodiments of the invention.This
Outward, described purpose is by having the semiconductor device launching radiation of the feature of another claim
And come by the manufacture method to this conversion platelet with the feature of embodiments of the invention
Realize.That changes platelet, the semiconductor device launching radiation and manufacture method is advantageously improved scheme
It it is the theme of embodiment as described below.
According at least one embodiment, for launching the conversion platelet bag of the semiconductor device of radiation
Containing the stock being made up of glass, described stock is provided with at least one opening.?
At least one opening introduces transition material.
Therefore, according to the present invention, conversion platelet is glass platelet, and described glass platelet is only partly
Comprise transition material.Transition material adjusts through conversion at this relative to the relative share of stock
Radiation relative to the relative share of radiation of unconverted and then the chromaticity coordinate of mixed radiation.
Hereinafter chromaticity coordinate being appreciated in particular that, into following numerical value, described numerical value describes to be launched
Light color in CIE color space.CIE color space particularly CIE standard color system
System (CIE-Normvalenzsystem) (also referred to as CIE 1931).Measured value is based on CIE
Standard color system, described measured value is relevant to general viewers and can be at CIE standard colorimetric
Shown in chart.The area of possible color is retouched in CIE standard color chart in coordinate system
Paint, described coordinate system can directly read X-component and the Y-component of random color.
The conversion platelet with the stock being made up of glass has the advantage that this glass plate
Can by different methods, such as flat glass, with the thickness that can extremely accurate set
Degree manufactures.Additionally, accurate opening or hole can be introduced in glass, such as by means of swashing
The micro-structuring processes of light auxiliary.Additionally, glass is a kind of highly stable stock, described
Stock is advantageously able to be provided with multiple opening or hole, and will not hinder the steady of plate on the whole
Qualitative.Additionally, glass has different refractive indexs and softening temperature.This is allowed for optocoupler in addition
Close output and for equalizing the improvement probability of the area fraction of stock and transition material.This
Outward, glass can at high temperature use, and such as described high temperature, such as hardening for transition material is must
Need.
Being interpreted as by opening in this application, opening extends completely through stock, particularly
Through whole thickness of glass.Therefore opening is the hole in stock, does not has in the region in described hole
Stock is set.The thickness of glass of stock is therefore corresponding to the opening degree of depth or hole depth
Degree.
According at least one embodiment, stock is at least for the spoke in blue wave-length coverage
Penetrate is that radiation is transparent.It means that stock is that largest portion is saturating for blue radiation
Bright.Transparent the meaning especially that of largest portion, stock at least to 80%, the most extremely
90%, it is particularly preferably that radiation is transparent or transparent to 95% for blue radiation.
Therefore, conversion platelet is characterised by being provided with stock, for blue radiation transparent
Region and be preferably adjacent be not provided with stock and be provided with transition material
Region, described transition material is suitable for being converted to the radiation of a wave-length coverage another wavelength model
The radiation enclosed.From the radiation of conversion platelet injection therefore by the spoke of the unconverted through stock
Penetrate and the radiation composition through conversion of conversion in conversion platelet.Stock is relative to conversion material
The area ratio of material determines the relative share of the light with unconverted through conversion at this.Described ratio
Example such as determines in the radiation exiting side of conversion platelet.
According at least one embodiment, transition material is completely filled with at least one opening.Thus,
It is capable of the uniform thickness of transition material, described thickness and thickness of glass or stock
Thickness so to conversion plate thickness relevant.Transition material and stock are the neatest at this
Flat.
According at least one embodiment, the size of at least one opening and/or transition material is determined
Become so that turning completely of the radiation in the wave-length coverage of blueness can be produced in the region of opening
Change.It is to say, conversion plate thickness or thickness of glass can be set as so that preferably completely
The thickness of the transition material that at least one opening is filled on ground is just so that produce in transition material
The conversion completely of blue radiation.
According at least one embodiment, at least one opening has the shape of frustum-like shape.This is especially
It is meant that at least one opening is the most tapered along thickness of glass.Opening is preferred at this
There is sub-circular or ellipse cross section.
According at least one embodiment, stock has the refractive index higher than silicones.Conversion
Material is therefore, it is possible to be embedded in Jie compared with commonly used silicones with higher refractive index
In matter, this advantageously contributes to thus improves the optocoupler of the semiconductor chip such as arranged in upstream
Close output or optical coupling is input in transition material.Additionally, be made up of glass has at least one
The stock of individual opening and the transition material introduced wherein is compared with in the case of silicones
Can preferably be matched with the thermal expansion of the semiconductor chip such as arranged in upstream, which improve and turn
Change platelet to the reliability of the connection of semiconductor chip.
According at least one embodiment, transition material is suitable for blue radiation is converted to wavelength
Longer, such as yellow and/or redness and/or the radiation of green.This is included by transition material
At least one material for transformation of wave length.Material for transformation of wave length such as can be incorporated into base in the form of granules
In body material.Furthermore, it is possible to material for transformation of wave length is especially as the solid existence of pottery.
According to an embodiment, at least one material for transformation of wave length has Eu adulterates and/or La
The material for transformation of wave length of doping.Especially, the wavelength convert material activated with La activated at Eu
Material has determined that the conversion efficiency relevant to intensity.
According to an embodiment, at least one material for transformation of wave length is the wavelength convert material of nitride
Material.Especially, at least one material for transformation of wave length can be from based on (Sr, Ca, Ba)2Si5N8,
Based on (Sr, Ca, Ba) SiN3And material for transformation of wave length of based on CaAlSiN selects.This
Particularly Eu adulterates, the material for transformation of wave length of nitride is preferably able to convert blue light into HONGGUANG.
According to an embodiment, at least one material for transformation of wave length is from orthosilicate, nitrilo--positive silicic acid
Salt and sialon select.Especially, material for transformation of wave length can be from Eu doping
In the nitrilo--orthosilicate of orthosilicate, Eu doping or the nitrilo--orthosilicate of La doping
Select.This material for transformation of wave length is preferably able to convert blue light into green glow to gold-tinted.
Therefore, conversion platelet preferably have for the blue radioparent region being made up of glass and
Blue radiation is carried out to the region being made up of transition material changed.It is input to turn from side coupling
Therefore the blue radiation changed in platelet wears relatively with corresponding region in the case of unconverted
Cross stock and as blue radiation coupling output from conversion platelet, or at transition material
In be converted to the radiation that wavelength is longer, the longer radiation of described wavelength couples defeated subsequently from conversion platelet
Go out.Here, in the region of transition material, preferably there is the conversion completely of the radiation of blueness.Therefore,
Transition material is suitable for blue radiation is fully converted to the spoke in the wave-length coverage that wavelength is longer
Penetrate.Therefore, from transition material, the radiation of injection does not has or has hardly the share of blueness.
Being not understood to especially at this, a small amount of component relevant to manufacture of blue radiation will not be without turning
Through transition material in the case of changing.Especially conversion completely is interpreted as, at least 90%, preferably more than
The blue radiation of 95% is converted to, by transition material, the radiation that wavelength is longer.
According at least one embodiment, stock is provided with multiple opening, opens described
Transition material is introduced respectively in Kou.Therefore stock is run through by opening.Stock is relative to turning
The size of the area ratio of conversion materials determines at this so that the radiation share of desired blueness turns
It is changed to the radiation that wavelength is longer, to such an extent as to launches the desired chromaticity coordinate model in white on the whole
Mixed radiation in enclosing.
According at least one embodiment, stock is provided with opening rectangularly.Here,
" rectangularly " refers to, opening is arranged in stock in a regular pattern.Such as, opening
Can be arranged in row and column fashion in stock.The setting of opening such as can form rectangle
Lattice or triangle lattice.It is capable of by rectangular setting: especially in a distributed manner at whole turn
Change on platelet, the blue radiation of unconverted between the radiation that the wavelength through conversion is longer from
Change in platelet and penetrate, to such an extent as to produce the folded of the improvement of the radiation with unconverted through conversion
Add.
Ratio according at least one embodiment, stock and transition material is 1:1.This example
As it is meant that about 50% being substituted by transition material of glass material of stock.Thus,
Can advantageously produce desired white transition.Described ratio can be at the model of manufacturing tolerance at this
Being uniformly distributed of 1:1 is deviated from enclosing.Here, such as until the deviation of +/-5% is possible.
Described ratio also such as is able at this and overall in conversion platelet of transition material and stock
Long-pending relevant.But especially, described ratio and stock are relative to the area ratio of transition material
Relevant.Described ratio such as determines in the radiation exiting side of conversion platelet.
According at least one embodiment, the device launching radiation has the semiconductor core launching radiation
Sheet, described semiconductor chip is suitable for launching blue radiation.Additionally, launch the device tool of radiation
Conversion platelet, described conversion platelet is had to comprise glass as stock, in described stock
It is provided with at least one opening, at least one opening, wherein introduces transition material.By quasiconductor
The blue radiation of chip emission couples defeated at this through stock in the case of unconverted
Go out.The share through transition material of the blue radiation launched by semiconductor chip is preferably entirely
Be converted to the radiation that wavelength is longer, to such an extent as to the radiation of injection not only includes part of blueness from device
Volume but also include the share that wavelength is longer.These light shares are such as superposed to so that device is whole
The radiation of white is launched on body.
Semiconductor device is preferably opto-electronic device, and described opto-electronic device is capable of with electricity
Otherwise the data that mode generates or energy be converted to light emission or.Semiconductor device has at least
One opto-electronic semiconductor chip, the semiconductor chip of preferred emission radiation.Semiconductor chip is preferred
It is LED (light emitting diode), particularly preferably film LED.In film LED, especially
Ground, growth substrates is partially or fully peeled off, and is epitaxially grown half in described growth substrates
The layer of conductor chip.
Semiconductor chip has semiconductor layers stack, includes active layer in described semiconductor layers stack.Have
Active layer is particularly suitable for producing blue radiation.To this, active layer preferably comprises pn-junction, double different
Matter structure but quantum well structure (SQW, single quantum well) or MQW knot
Structure (MQW, multi quantum well) is for producing radiation.Term quantum well structure exists
This does not show any implication about quantized dimension.Additionally, quantum well structure include quantum groove,
Quantum wire and quantum dot and each combination of these structures.
The semiconductor layers stack of semiconductor chip preferably comprises III/V race semi-conducting material.III/IV race
Semi-conducting material be particularly suitable for producing ultraviolet, through visible until infrared spectral region
In radiation.
According at least one embodiment, stock and transition material with the most predeterminable ratio
Example exists so that the device radiated by transmitting radiates predeterminable color and/or predeterminable color
The light of degree coordinate range.If the light of cool white such as should be produced, then blue radiation is about
17% in the case of unconverted through conversion platelet be enough.So, remaining radiation is turned
Change.The ratio of stock and transition material correspondingly selects.
According at least one embodiment, little for manufacturing the conversion of the semiconductor device launching radiation
The method of plate includes following method step:
A) provide, with the form of platelet, the stock being made up of glass,
B) in stock, at least one opening is constituted, and
C) transition material is introduced at least one opening.
Being capable of following conversion platelet by means of this manufacture method, described conversion platelet is partly
The stock being made up of glass that comprises preferably clear and comprising partly with being adjacent turns
Conversion materials.Radiation through conversion platelet can pass partly at this in the case of unconverted
Conversion platelet, particularly in the region of stock, and be adjacent partly conversion
Material is converted to the radiation of another wavelength.Transparent transparency area is relative to the ratio of transition material
Example determines the phase of the light longer with the light of unconverted, preferred blue light and wavelength through conversion at this
To share.Being sized to opening at this so that realize changing completely in transition material.
In method step a), at this, preferably fabricated glass plate, such as flat glass plate, described
Flat glass plate has the thickness that can extremely accurate set.Glass is characterised by high stablizing
Property, to such an extent as in method step b), can introduce at least one opening in glass, and not
The stability of infringement glass plate.
Preferably, constituted at least by laser-assisted micro-structuring processes in method step b)
One opening.This method allows accurate opening and hole are reasonably introduced the base being made up of glass
This material.The size of opening is coordinated with desired conversion degree mutually at this.
According at least one embodiment, transition material in method step c) by means of pressing
It is incorporated at least one opening.Therefore, fill hole by means of pressing to be capable of uniformly
Thickness, by described thickness be sized to be sufficient for changing completely.
Transition material is preferably embedded in stock with thermal manner.Especially, transition material exists
The after-hardening being incorporated in the opening of stock.Use glass as stock this with such as
The higher temperature of permission compared by normally used silicones.Especially, it is possible to use desired by having
Refractive index and the glass material of desired softening temperature.
According at least one embodiment, in method step b), multiple openings are formed into substantially
In each opening, transition material is introduced in material and in method step c).In stock
The quantity of opening and size this with desired conversion ratio and especially with desired generation
Chromaticity coordinate be correlated with.Especially, can set via the area ratio of stock and transition material
The fixed ratio radiating the radiation relative to unconverted through conversion.
Accompanying drawing explanation
Other the advantage of the present invention and be advantageously improved scheme from below in association with accompanying drawing 1 to 4
The embodiment described draws.Accompanying drawing illustrates:
Fig. 1 illustrates the diagrammatic top view of an embodiment of the conversion platelet according to the present invention；
The signal of the embodiment that Fig. 2 A, 2B are shown respectively the conversion platelet according to the present invention is horizontal
Cross section,
Fig. 3 illustrates the schematic cross-sectional of an embodiment of semiconductor device according to the invention, with
And
Fig. 4 illustrates the signal stream of an embodiment of the manufacturing method according to the invention of conversion platelet
Cheng Tu.
In the accompanying drawings, ingredient that is identical or that play phase same-action is respectively equipped with identical accompanying drawing
Labelling.The ingredient illustrated and its mutual magnitude relationship are not to be taken as proportionally.Phase
Instead, in order to preferably visual and/or in order to be better understood from, it is possible to exaggeration thick or
Exaggerate big size and individual components is shown, such as layer, structure, parts and region.
Detailed description of the invention
Figure 1 illustrates the top view of conversion platelet 1, described conversion platelet comprises stock 2.
Stock 2 preferably glass material, such as flat glass.Particularly square in stock 2
It is provided with opening 3 battle array shape.Opening 3 extends through the whole thickness of glass of stock at this.
Opening 3 has ellipse, the cross section of circular.Preferably, opening 3 is in its size side
Face is configured to identical or approximately uniform.The quantity of the opening 3 in stock 2 is at Fig. 1
Embodiment in exemplarily only illustrate.The quantity of the opening 3 in stock 2 can be according to institute
Desired application and changing according to desired conversion ratio.
Transition material 4 is introduced respectively in opening 3.Especially, transition material 4 is represented respectively completely
Fill opening 3.Therefore, the thickness of glass of stock 2 is corresponding to transition material thickness.Conversion
Material 4 is preferably respectively adapted to be converted to blue radiation that wavelength is longer, the spoke of such as yellow
Penetrate.Here, corresponding opening so that the size of corresponding transition material 4 be matched with desired
Chromaticity coordinate.Especially, being sized to opening 3 and transition material 4 so that energy respectively
The radiation that enough radiation direction wavelength produced in the region of opening 3 in blue wave-length coverage are longer
Change completely.
To this, the ratio of stock 2 and transition material 4 for example, 1:1.It means that glass
About the 50% of glass area is substituted by transition material.
Such as, in the stock being made up of the flat glass of 100 μ m-thick, in square setting
In the case of, when a diameter of 50 μm of opening, draw the pitch of holes of about 87 μm.
Especially, it is possible to draw the rectangle with side a around each opening.Now, in order to obtain
Obtain the transition material ratio relative to the 50% of stock, it is necessary to applicable, the area of opening
Half equal to the area of rectangle.Here, when the radius of opening is r, draw following relation:
2r2π=1/2 a2
Wherein
By the conversion platelet so constituted, it is possible to via stock relative to the face of transition material
Long-pending ratio adjusts and sets the relative share of the light with unconverted through conversion.Transition material
Size be preferably determined as at this so that these blue lights are fully converted to the radiation that wavelength is longer.
Stock and transition material exist with the most predeterminable ratio so that radiated by transmitting
The device predeterminable color of radiation and/or the light of predeterminable chromaticity coordinate scope.If example
As the light of cool white should be produced, then about the 17% of blue radiation is in the case of unconverted
Also it is enough through conversion platelet.So, remaining radiation is changed.Stock and conversion
The ratio of material correspondingly selects.If to this assume pottery transition material and the refraction of glass
Rate is roughly equal and ignores scattering effect, then when the blue share rather than 50% assuming 17%
Time, the formula being previously alluded draws: value a=3.26r.In 180 μm assuming transition material
Thickness be sufficiently used for changing completely under conditions of, in the case of the thickness of glass of 180 μm,
Pitch of holes a of 33 μm is obtained for pore radius r=10 μm.Example illustrates, according to mixing
The desired color of light or colour temperature, it is possible to select be suitable for pitch of holes so that conversion agent relative to
The area ratio being suitable for of stock.The light of unconverted is relative to the ratio of the light through conversion
At this typically with the emission spectrum of semiconductor chip, the transmitting wavelength of semiconductor chip, desired
Colour temperature, desired chromaticity coordinate, the refractive index of stock, the refractive index of transition material and
The scattering properties with transition material of stock is relevant.
The conversion platelet with the stock being made up of glass can be by different methods with energy
The enough thickness extremely accurate set manufactures.Additionally, the most such as can be by means of laser
Accurate hole or opening are reasonably incorporated in stock by the micro-structuring processes of auxiliary.Cause
It is highly stable material for glass, it is possible to constitute multiple opening in stock.These
Opening is filled by transition material subsequently completely, such as, by means of pressing, it is possible to realize all
Even thickness, described uniform thickness is suitable for changing completely.
Glass as stock has widely different refractive index and softening temperature.This shows
For optical coupling output with for equalizing the improvement probability of the area fraction of glass and transition material.
Additionally, the glass as stock allows to use the such as necessary temperature of transition material hardening.
Thus, conversion particles can be embedded in have high refractive index, particularly with commonly used silicon tree
Fat is compared in the stock with high refractive index, and this contributes to light from designed semiconductor core
Coupling output or contribute to the optical coupling of designed semiconductor chip and be input to change material in sheet
In material.Advantageously, moreover, the conversion with the transition material introduced wherein being made up of glass
Platelet can mesh well into the thermal expansion occurred that is in operation in designed semiconductor chip,
More preferable especially compared with in the case of silicones, this advantageously improve conversion platelet and
The reliability of the designed connection between semiconductor chip.
E.g. there is the alkali-free glass of the deformation temperature of about 720 DEG C as the glass of stock
Glass.Thermal coefficient of expansion (CTE) is such as positioned at about 7ppm/k, say, that at semiconductor core
In the scope of the thermal coefficient of expansion of sheet, conversion platelet is set in the downstream of described semiconductor chip.Half
Conductor chip can be such as have that be made up of Ge and/or Mo:Cu or have Ge and/or
The thin-film semiconductor chip of the carrier of Mo:Cu.Stock is preferably at least for blue ripple
Radiation in long scope is that radiation is transparent, the most transparent.If such as blue radiation
Coupling is input to change in platelet, then blue radiation share in the region of stock exists
Through conversion platelet in the case of the most not affecting.Therefore, the radiation of these bluenesss is from conversion platelet
The middle radiation as blueness is penetrated again.Otherwise, in the region of transition material, blue radiation
Share be converted to the radiation that wavelength is longer, occur especially to turn completely in the region of transition material
Change, to such an extent as to from the region of transition material, only have the longer radiation of wavelength couple from conversion platelet
Output.Therefore, on the whole, blue radiation and the longer radiation of wavelength are penetrated from conversion platelet,
The radiation of described blueness and longer the radiating of wavelength are mixed into white radiation by superposition.Here,
The chromaticity coordinate accurately of the radiation of white via stock relative to the area ratio of transition material
Example sets.
The cross section of the conversion platelet of the embodiment of Fig. 1 is shown in fig. 2.Opening 3 is fully
Run through stock 2 and fully filled by transition material 4, to such an extent as to constituting in cross-section
Transition material and the sequence alternately of stock.The radiation that coupling is input to change in platelet 1 exists
Through stock 2 in the case of unconverted.In the region of transition material 4, coupling input
Radiation in conversion platelet 1 is fully converted to the radiation of another kind of wavelength, and particularly wavelength is more
Long radiation.
One of the cross section such as changing platelet of the embodiment according to Fig. 1 is shown in fig. 2b
The embodiment of alternative.Opening 3 through stock 2 has the shape of frustum-like shape.Especially,
It is tapered that opening 3 is configured on the direction along stock 2.Tapered in opening 3
This realizes with being preferably identical to each other.It means that opening 3 is constituted in the same manner or approximately the samely.
Stock 2 has the shape of frustum-like shape the most equally, but, described shape tapered
With transition material 4 or the tapered of opening 3 constitute on the contrary.
Figure 3 illustrates the semiconductor device 10 launching radiation, described semiconductor device includes launching
The semiconductor chip 5 of radiation, described semiconductor chip is preferably suitable for launching blue radiation SC。
Radiation at semiconductor chip 5 couples and is provided with conversion platelet 1 on outlet side.Conversion platelet 1 is excellent
Choosing is corresponding in the embodiment of Fig. 1 or 2.
Semiconductor chip 5 has the active layer 5a being suitable for producing radiation, and described active layer is suitable for
Be in operation the radiation launched in blue wave-length coverage.Semiconductor chip 5 has semiconductor layer sequence
Row, described layer sequence is based on III/IV race semi-conducting material.Active layer 5a is integrated at this
In layer sequence.Semiconductor chip 5 preferably LED.
The conversion platelet 1 arranged in the downstream of semiconductor chip 5 has stock 2, described
Stock is provided with opening together with the transition material 4 introduced wherein.Stock 2 is at this
It is configured to for the radiation launched by semiconductor chip 5 be transparent or radiate transparent.
It means that the radiation launched towards the direction of conversion platelet 1 from active layer 5a is at basic material
The region of material 2 couples and is input in transition material, and transmission is worn in the case of unconverted
Cross conversion platelet 1.Therefore, these radiation conversion platelet 1 deviate from the one of semiconductor chip 5
As blue radiation S on sideCCoupling output.Therefore, semiconductor chip 5 radiation launched
These radiation shares conversion platelet 1 in will not on chromaticity coordinate produce impact.
That launched by active layer 5a, in the region of transition material 4 coupling be input to change platelet 1
In radiation be converted in transition material 4 the longer radiation of wavelength and from conversion platelet 1 make
, the radiation S of such as yellow longer for wavelengthKCoupling output.Therefore, at conversion platelet 1
Deviate from the side of semiconductor chip 5, not only blue radiation SC, and the radiation S of yellowK
Injection.These radiation shares are superimposed as the mixed radiation S of white on the wholeG.Therefore, quasiconductor
Device is the semiconductor device launching white.The chromaticity coordinate of the radiation of white is at this and transition material
Area relative to the area of stock ratio be correlated with.Therefore, can be set by area ratio
The chromaticity coordinate of fixed desired white.
Figure 4 illustrates the flow chart of the manufacture method of conversion platelet, described conversion platelet is the most such as
The conversion platelet of Fig. 1 to 3 is constituted like that.At method step V1In, provide with the form of platelet
The stock being made up of glass.After providing stock, at method step V2In,
Stock constitutes an opening or multiple opening.These openings are preferably by laser-assisted micro-
Structural method is constituted, and is consequently formed the shape of the frustum-like shape of opening.At next method step
V3In, transition material is incorporated in an opening or multiple opening.Transition material preferably by means of
Pressing introduces.The opening of realization transition material filling it is particular enable to by means of pressing
Uniform thickness.Thickness is preferably set at this so that in the opening or in transition material
It is capable of the conversion completely of the longer radiation of blue radiation direction wavelength.
After being incorporated in opening by transition material, these transition materials harden in high temperature.?
After manufacturing conversion platelet, described conversion platelet such as can be by means of picking and placement methods
(Pick-and-Place-Verfahrens) it is applied on designed semiconductor chip and fixes
At that.Advantageously, the conversion platelet of the transition material with introducing being made up of glass with in silicon tree
Compare the thermal expansion that can preferably be matched with semiconductor chip in the case of fat, hence improve and turn
Change the reliability of connection between platelet and semiconductor chip.
The present invention is not limited to the description carried out according to embodiment, but include each new feature and
The arbitrary combination of feature, this arbitrary of feature especially comprised in the claims combines,
Even if described feature or described combination self the most in the claims or are not said in embodiment
Time bright the most such.
This application claims the priority of German patent application 10 2,011 115083.1, the disclosure of which
It is expressly incorporated herein by reference at this.
Claims (13)
1. the conversion platelet (1) on the semiconductor chip (5) being fixed on transmitting radiation,
-wherein said conversion platelet (1) comprises the stock (2) being made up of glass, in institute
State and stock is provided with multiple opening (3), introduce transition material the most respectively
(4),
Being sized to of-described opening (3) and/or described transition material (4) so that
The region of each opening (3) can produce turning completely of the radiation in blue spectral region
Change,
-the region that formed by described stock is configured to so that described region is by blue spectrum
Pass to radiation unconverted in scope, and
The radiation of-converted radiation and unconverted is mixed into white light.
Conversion platelet (1) the most according to claim 1,
Wherein said conversion platelet (1) is prefabricated.
Conversion platelet (1) the most according to claim 1,
Wherein said stock (2) is at least for the radiation (S in blue wave-length coverageC)
Radiation can penetrate.
Conversion platelet (1) the most according to claim 1,
Wherein said transition material (4) is completely filled with each in described opening (3).
Conversion platelet (1) the most according to claim 1,
Each in wherein said opening (3) has the shape of frustum-like shape.
Conversion platelet (1) the most according to claim 1,
Wherein said stock (2) has higher refractive index compared with silicones.
Conversion platelet (1) the most according to claim 1,
Wherein said transition material (4) is suitable for: by blue radiation (SC) be converted to wavelength
Longer radiation (SK)。
Conversion platelet (1) the most according to claim 1,
Wherein said opening (3) is arranged in described stock (2) rectangularly.
9. the device (10) launching radiation, the described device launching radiation has transmitting radiation
Semiconductor chip (5) and conversion platelet according to claim 1 (1), described partly lead
Body chip is suitable for launching blue radiation (SC)。
10. according to the device (10) launching radiation described in the next item up claim,
The ratio that wherein said stock (2) and described transition material (4) are preset with mutual energy
Example exist so that by described launch radiation device (10) radiant preset color and/or
The light of the chromaticity coordinate scope that can preset.
The conversion platelet (1) of 11. 1 kinds of semiconductor chips (5) manufactured for launching radiation
Method, has a following method step:
A) provide, with the form of platelet, the stock (2) being made up of glass,
B) constitute multiple in described stock (2) by laser-assisted micro-structuring processes
Opening (3), and
C) transition material (4) is incorporated in each opening (3), wherein
Being sized to of-described opening (3) and/or described transition material (4) so that
The region of each opening (3) can produce turning completely of the radiation in blue spectral region
Change,
-the region that formed by described stock is configured to so that described region is by blue spectrum
Pass to radiation unconverted in scope, and
The radiation of-converted radiation and unconverted is mixed into white light.
12. methods according to claim 11,
Wherein by means of pressing, described transition material (4) is incorporated in each opening (3).
13. 1 kinds for manufacturing the device (10) launching radiation according to claim 9
Method, has a following step:
-conversion platelet (1) according to claim 1 is provided,
-provide the semiconductor chip (5) launching radiation, the described semiconductor chip launching radiation to fit
Together in launching blue radiation (SC),
-described conversion platelet (1) applied and is fixed to the described semiconductor core launching radiation
On sheet (5).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011115083.1 | 2011-09-19 | ||
| DE102011115083A DE102011115083A1 (en) | 2011-09-19 | 2011-09-19 | Converter wafer, radiation-emitting component with such a converter wafer and method for producing such a converter wafer |
| PCT/EP2012/066036 WO2013041313A1 (en) | 2011-09-19 | 2012-08-16 | Converter die, radiation-emitting component comprising one such converter die and method for producing one such converter die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103814449A CN103814449A (en) | 2014-05-21 |
| CN103814449B true CN103814449B (en) | 2016-11-30 |
Family
ID=
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| JP2002289925A (en) * | 2001-03-23 | 2002-10-04 | Citizen Electronics Co Ltd | Light-emitting diode |
| JP2006179684A (en) * | 2004-12-22 | 2006-07-06 | Matsushita Electric Works Ltd | Light emitting device |
| DE102008012407A1 (en) * | 2008-01-31 | 2009-08-06 | Osram Opto Semiconductors Gmbh | Radiation-emitting device |
| CN102017204A (en) * | 2008-05-07 | 2011-04-13 | 皇家飞利浦电子股份有限公司 | Illumination device with LED with a self-supporting grid containing luminescent material and method of making the self-supporting grid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002289925A (en) * | 2001-03-23 | 2002-10-04 | Citizen Electronics Co Ltd | Light-emitting diode |
| JP2006179684A (en) * | 2004-12-22 | 2006-07-06 | Matsushita Electric Works Ltd | Light emitting device |
| DE102008012407A1 (en) * | 2008-01-31 | 2009-08-06 | Osram Opto Semiconductors Gmbh | Radiation-emitting device |
| CN102017204A (en) * | 2008-05-07 | 2011-04-13 | 皇家飞利浦电子股份有限公司 | Illumination device with LED with a self-supporting grid containing luminescent material and method of making the self-supporting grid |
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