WO2014139735A1 - Herstellung eines optoelektronischen bauelements - Google Patents
Herstellung eines optoelektronischen bauelements Download PDFInfo
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- WO2014139735A1 WO2014139735A1 PCT/EP2014/052346 EP2014052346W WO2014139735A1 WO 2014139735 A1 WO2014139735 A1 WO 2014139735A1 EP 2014052346 W EP2014052346 W EP 2014052346W WO 2014139735 A1 WO2014139735 A1 WO 2014139735A1
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- Prior art keywords
- radiation
- displacement
- semiconductor chip
- potting
- mass
- Prior art date
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- 230000005693 optoelectronics Effects 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 230000005855 radiation Effects 0.000 claims abstract description 204
- 238000006073 displacement reaction Methods 0.000 claims abstract description 176
- 238000004382 potting Methods 0.000 claims abstract description 172
- 150000001875 compounds Chemical class 0.000 claims abstract description 154
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/508—Wavelength conversion elements having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer, wavelength conversion layer with a concentration gradient of the wavelength conversion material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
- H01L33/504—Elements with two or more wavelength conversion materials
Definitions
- the invention relates to a method for producing an optoelectronic device, and an optoelectronic ⁇ construction element.
- the optoelectronic component comprises a optoe ⁇ lektronischen semiconductor chip for delivering a primary radiation and a potting compound surrounding the semiconductor chip for partially converting the primary radiation into a conversion radiation.
- Optoelectronic components may have an optoelectronic semiconductor chip for generating a light radiation and a conversion material ("phosphor") for the partial conversion of the generated light radiation
- the primary and conversion radiation can be superimposed to form a mixed radiation, for example a white light radiation in the color locus distribution of the mixed radiation produced by the components, for example component deviations, fluctuations in the concentration of the phosphor particles, and a bottom attributable to different casting height.
- the color location can be dependent on the viewing angle. The reason for this is that the light radiation emitted by the semiconductor chip dependence of the radiation angle of different size Wegstre ⁇ CKEN in the sealing compound passes through, and therefore there may be a different extent of conversion depends on the angle. This can result in significant yield losses.
- a measurement of the potting height and post-dosing of particle-filled potting compound for correcting the potting height can be performed. This can be achieved by inline process control in a production line. Despite the correction of the potting height, the components may continue to have color location variations. To reduce angle-dependent color location fluctuations, the potting compound can be formed with admixed scattering particles, so that an optical diffuser for distributing light is present. This measure may have a reduced Effi ⁇ ciency of the components result.
- the object of the present invention is to specify a solution for an improved optoelectronic component.
- a method for producing an optoelectronic component comprises providing an output arrangement comprising an optoelectronic semiconductor chip and a potting compound surrounding the semiconductor chip.
- the semicon ⁇ terchip is designed to dispense a primary radiation.
- the casting compound is designed to convert a portion of the primary radiation into a conversion radiation so that a mixed radiation of primary and conversion radiation can be generated.
- the method further includes
- the sealing compound and the displacement of mass have a Kunststofferie under ⁇ of materials.
- a correction is carried out by adding at least one displacement mass to the potting compound with a material characteristic different from the potting compound.
- This allows the optoelectronic device to make a kor ⁇ -corrected mixed radiation, which corresponds to a predetermined specification.
- the introduction of the at least one displacement mass can be associated with a change in the color locus of the producible mixed radiation and / or with a change in the emission characteristic of the mixed radiation.
- a HOE here yield may, with regard to an inquiry carried out by the procedural proceedings ⁇ production of several components, are obtained.
- the correction can be made such that the at least one displacement mass is introduced into the potting compound of the starting arrangement for displacement of the potting compound.
- a measurement of the mixed radiation is carried out.
- chromaticity coordinates ⁇ the output device and / or a Abstrahlcha- can be obtained rakteriding.
- the introduction of the at least one mass displacement in the casting compound is carried out in Depending ⁇ ness of the measured mixed radiation. This allows the correction with a high reliability and be tuned precisely ⁇ accuracy on the respective measured, generated by the output arrangement mixed radiation.
- An individual adaptation of the color locus of the mixed radiation and / or an individual adaptation of the angular characteristic of the color locus of the mixed radiation are possible.
- parameters such as an amount, volume size and / or introduction position of a displacement mass used for the correction can be predefined, for example, depending on the measured mixed radiation. Furthermore the type or nature of the material is translated ⁇ th displacement mass can be selected. Another vorgeb ⁇ Barer parameter is the number of used displacement masses.
- the definition of such parameters as a function of the measured light radiation, as a result of which, for example, the magnitude and the direction of a desired chromaticity change can be predetermined, can be carried out with the aid of a suitable algorithm.
- the provision of the output arrangement comprises providing a carrier with a cavity, arranging the semiconductor chip on the carrier in the cavity, and introducing the potting compound into the cavity. Ment in the finished optoelectronic Bauele- the optoelectronic semiconductor chip, the potting ⁇ mass and the subsequently introduced mass displacement in the cavity are arranged.
- a continuous carrier can first be provided with a plurality of cavities in the ⁇ ser respect, said semiconductor chips, potting compounds and optionally displacement masses in the cavities are disposed.
- a correction with the aid of displacement masses can only take place in the event that mixed radiations of components to be produced are outside a specified specification.
- the continuous carrier can be cut to provide isolated components.
- the potting compound has a potting material in which luminescent material particles are embedded.
- the radiation conversion can be done with the help of light ⁇ Fuel Particles by the phosphor particles a part of the primary radiation of the optoelectronic semiconductor Absorb chips, thereby stimulating the reemission of conversion radiation.
- the molding material of the casting compound may be a transparent material which is initially provided in liquid or zähflüssi ⁇ ger form and subsequently cured who can ⁇ . Both providing the initial arrangement or the introduction of the potting material into the cavity of the carrier as well as the introduction of the at least one Verdrijnungsmas- se in the molding compound is carried out in a non-cured to stand ⁇ the casting compound. After the introduction of the at least one mass displacement, the potting compound may be cured from ⁇ .
- the potting material may be, for example, a silicone material, or other material such as an epoxy material.
- production with additional scattering particles embedded in the potting compound can be considered for the optoelectronic component in order to improve the angular dependence of the color locus.
- a substantially lower particle ⁇ density of the scattering particles can be provided. This allows the optoelectronic component greater efficiency ⁇ aufwei sen. It is also possible to dispense with the use of scattering particles.
- the optoelectronic semiconductor chip may, in particular, be a light-emitting diode chip.
- the optoelectronic component can be, for example, implemented as a white light source ⁇ .
- the op ⁇ toelektronische semiconductor chip may be formed, for example, to emit light radiation in the blue to ultraviolet spectral range.
- the casting compound or the phosphor particles contained in the molding compound may be formed in ⁇ play, a part of the of the semiconductor terchip emitted light radiation into a light radiation in the yellow spectral range to convert.
- the superimposition of the different light radiations can result in a white light radiation (additive color mixing).
- the potting compound comprises only one type of phosphor particles, and therefore all luminescent ⁇ material particles emit a light radiation of the same spectral range (for example, a yellow light radiation).
- the potting compound may comprise different types of phosphor particles, ie a mixture of phosphor particles which emit converted light radiation of different spectral ranges.
- the entire conversion radiation generated in the potting compound comprises several partial radiations of different spectral ranges.
- the potting compound can be formed, for example, with first phosphor particles for emitting light radiation in the yellow to green spectral range and second phosphor particles for emitting light radiation in the red spectral range.
- the (at least one) displacement composition has a potting material, but without inserting ⁇ embedded phosphor particles.
- the mass displacement By using a ⁇ Ver molding material for the displacement of the mass the mass displacement can be arranged in a region above the semiconductor chip to ⁇ which can be irradiated in a direct manner by the output from the semiconductor chip primary radiation. As a result, the radiation conversion and thus the resulting mixed radiation can be changed in a targeted manner. A specific change of the color location and / or the angle dependence of the color location is possible.
- the molding material of the mass displacement may be a transpa ⁇ rentes material which is introduced in liquid or viscous form in the sealing compound, and can be subsequently cured together with the sealing compound. It is possible that the displacement of mass and the potting compound have the same ⁇ potting material, or different Vergussmateria ⁇ lien.
- the potting material of the displacement mass the above-mentioned materials, for example, a silicone material or an epoxy material, are used.
- a has (at least one) displacement mass again a potting material, with a ⁇ bedded phosphor particles.
- the phosphor particles of the displacement mass can also convert part of the primary radiation of the semiconductor chip, and therefore contribute to generating the conversion radiation.
- the displacement mass differs by the phosphor particles of the casting compound. This can be achieved by the methods described in Fol ⁇ constricting embodiments, which are optionally combined with each other.
- the displacement mass may deviates from the United ⁇ casting compound, in particular a lower concentration tion of phosphor particles.
- the particle concentration is a possible parameter over which, for example, the magnitude and the direction of a color location correction can be specified.
- the displacement mass comprises a different type of phosphor particles than the potting mass ⁇ .
- the displacement mass and the casting compound can emit converted light radiation in different spectral ranges.
- a color correction can be realized perpendicular to a Konversionsli ⁇ never.
- the conversion line refers to a color locus of a device with a semiconductor chip and a converting potting compound and forms the
- a trols chromaticity coordinates is in a corresponding manner, characterized possible that different mixtures are provided from different phosphor particles in the displacement mass and in the sealing compound ⁇ the, or that the casting compound with a mixture of various ⁇ Dener phosphor particles and the displacement composition having le ⁇ diglich one kind of fluorescent particles ( or vice versa).
- the displacement mass is introduced into the casting compound in an area opposite a front side of the optoelectronic semiconductor chip.
- the front side is the side over which the semiconductor chip can emit a substantial part of the primary radiation (light exit side).
- Arranging the displacement mass in this area makes it possible that the supply Verdrän ⁇ mass is irradiated from the front side primary radiation emitted of the semiconductor chip. As a result, a targeted correction of the color location of the mixed radiation can be achieved.
- the displacement mass is introduced into the potting compound in an area offset laterally or laterally from the semiconductor chip.
- the Verdrän ⁇ supply mass can be positioned, for example, that the displacement mass is irradiated by an obliquely emitted from the semiconducting ⁇ terchip part of the primary radiation.
- the displacement masses can be positioned symmetrically around the semiconductor chip.
- the region laterally offset relative to the semiconductor chip and the displacement mass formed in this region can be connected, and therefore rotate around the semiconductor chip viewed from above.
- the displacement mass laterally offset relative to the optoelectronic semiconductor chip in a relatively large distance, so that the displacement mass is not or only insignificantly irradiated by the directly emitted primary radiation.
- the displacement mass can in this case essentially increase the casting height, and thus cause a corresponding color change.
- the displacement mass is introduced into the potting compound using a nozzle.
- the displacement mass can be ejected from the nozzle in the form of one or more drops or jet and introduced into the potting compound. From this ⁇ guide die may occur without TERIAL phosphor particles, for application to a (zäh-) displacement liquid mass, in particular a displacement of a mass Vergussma-.
- the displacement mass introduced into the potting compound is a body made of a solid material. This material may have a greater density than the potting compound or its potting material, so that the body can be positioned laterally next to the semiconductor chip.
- the body may be, for example, a sphere or a sphere of glass.
- an optoelectronic component has an optoelectronic semiconductor chip, which is designed to emit a primary radiation.
- the component furthermore has a potting compound surrounding the semiconductor chip.
- the potting compound is also keptbil ⁇ det to convert a portion of the primary radiation into a conversion radiation, so that a mixed radiation of primary and conversion radiation can be generated.
- the optoelectronic component comprises at least one displacement ⁇ mass which is introduced for varying the mixing generatable radiation in the casting compound.
- the potting compound and the displacement mass have a different mate ⁇ rialbelvesheit.
- the optoelectronic component can generate a light radiation which can correspond to a predetermined light radiation.
- the color locus of the light radiation can correspond to a predefined color locus and / or can have a predefined color locus
- the at least one displacement composition can be for correcting ver ⁇ turns, and be introduced to displace the sealing compound and magnification ⁇ fication a grouting in the casting compound in order to change the producible mixed radiation.
- FIG. 1 shows a schematic side view of an output arrangement provided in the manufacture of an optoelectronic component, comprising a carrier with a cavity and an optoelectronic semiconductor chip arranged in the cavity, which is cast with a potting compound;
- FIG. 2 shows an introduction of a displacement mass into the casting compound of the starting arrangement, which is carried out in the manufacture of an optoelectronic component, wherein the displacement mass is a solid body;
- FIG. 3 shows a method performed in the manufacture of an optoelectronic device incorporating a displacement composition in the casting compound, the output arrangement, wherein the displacement composition comprises a potting material without luminescent material particles on ⁇ and is placed in a a front side of the semiconductor chip ge ⁇ genüberstruct area;
- Figure 4 is a method performed in the manufacture of an optoelectronic device incorporating a plurality of VerdrDeutschungsmas ⁇ sen from a molding material without the phosphor particles in the encapsulant of the output array, the displacement extent laterally offset with respect to the semiconductor chip who ⁇ ;
- FIG. 5 shows an introduction of a plurality of displacement masses made of a potting material without luminescent material into the potting compound of the output arrangement laterally offset relative to the semiconductor chip in the production of an optoelectronic component, wherein, in contrast to FIG. 4, a larger distance to the semiconductor chip is provided;
- Figure 6 is a schematic side view of a Bauele ⁇ ment with an introduced into the potting compound displacement mass, which has a potting material with LeuchtstoffParti ⁇ angles; and
- FIG. 7 shows a flow diagram of a method for producing an optoelectronic component.
- the components have an optoelectronic semiconductor chip 110, which is embedded in a potting compound 130 designed for radiation conversion.
- a displacement mass is introduced into the potting compound 130 with a material composition or material composition different from the potting compound 130.
- the emitted light radiation may have a changed color location and / or an altered emission characteristic.
- Step 201 provides an output assembly 100 shown in Fig. 1.
- the motherboard 120 having a cavity 121, ei ⁇ NEN optoelectronic semiconductor chip 110 and a potting compound 130.
- the potting compound 130 is filled with phosphor particles 135 to the radiation conversion.
- the semiconductor chip 110 is arranged inside the cavity 121 on the carrier 120. Here, the semiconductor chip 110 is centered in the region of
- the cavity 121 is potted with the potting compound 130, so that the semiconductor chip 110 is surrounded by the potting compound 130. Due to the boundary ⁇ surface tension, the sealing compound 130 may have a curved upper surface.
- the semiconductor chip 110 For providing the output arrangement 100 of FIG. 1, first arranging the semiconductor chip 110 on the carrier ger 120 performed in the cavity 121. Here, the semiconductor chip 110 is fastened with a rear side on the carrier 120 and electrically contacted with the carrier 120. Subsequently , the potting compound 130 filled with the phosphor particles 135 is introduced into the cavity 121.
- the casting compound 130 is formed from a transparent Vergussmate ⁇ rial, in which the phosphor particles 135 are embedded ⁇ .
- the potting material of potting compound 130 may be, for example, a silicone material, or alternatively another material, for example, an epoxy material.
- the Vergie ⁇ SEN of the cavity 121 with the particle-filled sealing compound 130 may be performed by a suitable means such as a dispenser or a metering device.
- the potting compound 130 or its potting material are in a viscous state. In a later stage of the process, the potting material and thus the potting compound 130 can be cured.
- the optoelectronic semiconductor chip 110 which can be produced by a suitable manufacturing method, may in particular be a light-emitting diode or LED chip 110 (Light Emitting Diode).
- the semiconductor chip 110 is designed to generate a primary light radiation 170 when electrical energy is supplied.
- the primary radiation 170 is emitted essentially via a front side opposite the rear side of the semiconductor chip 110, which is also referred to as the light exit side of the semiconductor chip 110. In this case, the emission of the primary radiation 170 can take place to a large extent in a certain emission area.
- Such a radiation area is indicated in Figure 1 at one side of the semiconductor chip 110 by way of beispielhaf ⁇ th, relating to a lateral surface normal emission angle 171st
- a lower emission of radiation can also take place at larger emission angles, as well as taking place over the lateral sides or a part of the lateral sides of the semiconductor chip 110.
- the supply of electrical energy to the semiconductor chip 110 is effected by means of not shown electrical connection and contact structures of the carrier 120, which are connected in the context of arranging the semiconductor chip 110 on the carrier 120 to not shown contacts of the semiconductor chip 110.
- Figure 1 illustrates a possible contacting with the help of a bonding wire 150 through the bonding wire ⁇ 150 is a front-side contact of the semiconductor chip 110 to an associated counter-contact of the wearer concluded reasonable 120th
- a back contact of the semiconductor chip 110 is connected, for example via a solder or an electrically conductive adhesive (not shown) to another mating contact of the carrier 120.
- the semiconductor chip 110 can simultaneously be mechanically fastened to the carrier 120.
- the semiconductor chip 110 may, for example, have two front-side contacts, which may be connected in a corresponding manner with two bond wires 150 to mating contacts of the carrier 120. It is also possible for the semiconductor chip 110 to have two rear-side contacts which can be connected to mating contacts of the carrier 120 via a solder or via an electrically conductive adhesive.
- the carrier 120 may be, for example, a so-called premold carrier.
- the carrier 120 may have an electrical connection and contact arrangement (leadframe), which is surrounded by a synthetic material material formed by encapsulation.
- leadframe electrical connection and contact arrangement
- Figure 1 may veran- a detail from a larger to ⁇ sammen Strukturden support 120 with a plurality of cavities 121 in this respect illustrate, each cavity 121 as described above equipped with a semiconductor chip 110 and may be potted with a potting compound 130. Therefore, distributed in a plane, there may be multiple contiguous output devices 100 having the construction shown in FIG.
- the continuous carrier 120 can be separated into separate carriers 120.
- the semiconductor chip 110 is surrounded on all sides by the potting compound 130 introduced into the cavity 121, except for its rear side.
- the information contained in the sealing compound 130 phosphor ⁇ particle 135 can be a part of the output from the semiconductor chip 110 in operation primary radiation 170 in a low- more energetic secondary light radiation 175, hereinafter referred to as conversion radiation 175, convert (volume conversion).
- conversion radiation 175 convert (volume conversion).
- the phosphor particles absorb 135 ei ⁇ nen part of the primary radiation 170, and can thereby be excited to shipowners mission of conversion radiation 175th
- the primary radiation 170 and the conversion radiation 175 may overlap to a mixed radiation 179.
- the mixed radiation 179 generated by mixing the primary radiation 170 and the conversion radiation 175 may, for example, be a white light radiation.
- the semiconductor chip 110 can be designed to generate a primary radiation 170 in the blue to ultraviolet spectral range.
- All phosphor particles 135 may comprise a conversion material, which forms part of the blue-violet light radiation 170 emitted by the semiconductor chip 110 into a light radiation 175 in the yellow one
- the potting compound 130 may be a Mi ⁇ research of various kinds of phosphor particles 135 have in this regard from different conversion materials which the primary radiation in secondary lower-energy 170
- the conversion radiation 175 generated in the potting compound 130 thus comprises a plurality of partial radiations.
- a configuration of the potting compound 130 with egg ⁇ ner mixture of the first phosphor particles to emit a light radiation in the yellow to green spectral region and second phosphor particles to emit can be of a light radiation in the red Spectral range can be provided. From the superposition of these light radiations can also emerge a white light radiation 179.
- the mixed radiation 179 that can be generated by the output arrangement 100 of FIG. 1 is outside of a specified specification.
- the color location may deviate from a predetermined color location or color location area.
- a plurality of output devices 100 may, for example due to component variations exist fluctuations in the concentration of the phosphor particles 135 and a different grouting significant Schwankun ⁇ gene in the Farbortverander.
- 179 be un ⁇ differently, the color locus of the mixed radiation depending on the viewing angle.
- the angular characteristic of the color point loading based on the fact that the output from the semiconductor chip 110 passes through the primary radiation 170 in dependence of the beam angle 171 different long distances in the sealing compound 130, and therefore different degrees of convergence ⁇ sion may be present. Such effects can be corrected with the measures described below.
- the mixed radiation that can be generated by the output arrangement 100 is first of all "
- the optoelekronische semi ⁇ conductor chip 110 is activated to emit the primary radiation 170th
- the mixed radiation 179 emitted as a result of the output arrangement 100 is measured by means of a suitable measuring device.
- color coordinates of the output arrangement 100 can be detected, for example. It is also possible to detect an angle-dependent emission characteristic.
- the measurement which is an inline measurement, is carried out after casting in the uncured state of the potting compound 130.
- a correction for changing the producible mixed radiation 179 is carried out, depending on the measured mixed radiation 179 of the output arrangement 100.
- at least one displacement mass is introduced into the uncured potting compound 130 of the output arrangement 100.
- the measured mixed radiation 179 of the output arrangement 100 can, for example, by a suitable algorithm parameters, such as a rate, volume size and / or the introducing of a displacement composition used for the correction, as well as a number of displacement Festge masses ⁇ sets. It is also possible to select a correction method from several possible correction methods. In this case, the nature or material properties of a predisposed displacement mass can be determined.
- the correction method shown in Figure 2 which leads to the production-of an optoelectronic device 101, refers to introduce a displacement composition in the form of a body 140 of a solid material in the unge ⁇ cured molding compound 130 in step 203rd
- the body 140 may be, for example, a bead of glass.
- For the introduction of the body 140 for example, on the casting ⁇ mass can be placed 130 and subsequently fall by themselves to the bottom of the cavity 121st
- the introduction of the body 140 in the potting compound 130 offers the possibility of the remaining volume of the cavity 121 to match ⁇ .
- the introduction of the body 140 has a displacement of the potting compound 130 and thereby an increase in the potting height result.
- the potting compound 130 can furthermore, as shown in FIG. 2, have a curved surface.
- the increased level of the volume encapsulation in the component 101 results in the operation of the semiconductor chip 110 having a greater degree of conversion of the primary radiation 170 than the output arrangement 100.
- the component 101 can thus produce a mixed radiation 179, in which the ratio of primary radiation 170 and conversion radiation 175 is shifted in favor of the conversion radiation 175. This is associated with a corresponding color change of the mixed radiation 179.
- the raised stabili ⁇ hung the level has a color locus of the mixed radiation 179 toward the red spectral range result.
- Another possible effect due to the introduction of the body 140 and thus the enlargement of the potting height is ei ⁇ ne slight change in the angular dependence of the color locus of the mixed radiation 179. This effect may be neglected. It may also be considered to form the potting compound 130 in addition to the phosphor particles 135 with additional scattering particles embedded in the potting compound 130 in order to reduce the angular dependence of the color locus (not shown).
- an individual trols chromaticity coordinates can be carried out so that different sizes, and thus a different size and fill level volume displacement increase inducing fixed body 140 provided ⁇ the.
- a different size and fill level volume displacement increase inducing fixed body 140 provided ⁇ the may be selected in step 203 one of the body 140 and be introduced into the casting compound Ver ⁇ 130th. It is also possible to insert a plurality of bodies 140, which may be of different sizes, (not shown).
- This may be the same potting material as potting compound 130, for example a silicone material or an epoxy material.
- the design of the displacement mass 141 from a potting material makes it possible to position the displacement mass 141 in an area above ⁇ half of the semiconductor chip 110th
- the displacement mass 141 is introduced in a viscous state into the potting compound 130, which is likewise present in a viscous state. Since the displacement mass 141 From a potting material without phosphor particles is freshlybil ⁇ det, the introduction, as indicated in Figure 3, using a nozzle 160 of a dosing device, not shown, are performed. This process, which can be called “jetting", becomes one or more
- the addition of the displacement mass 141 to the potting compound 130 results in a volume displacement, so that a larger potting height is also present in the component 102 of FIG. 3 in relation to the output arrangement 100 of FIG.
- the correction of the mixed radiation 179 in the case of the component 102 is not based on the increased potting height, but rather on arranging the displacement mass 141 in an area above the semiconductor chip 110, which can be directly irradiated by the primary radiation 170 emitted during operation of the semiconductor chip 110. In this way, a targeted change in the radiation conversion and thus the producible mixed radiation 179 are possible.
- the displacement mass 141 is positioned opposite to the front side of the semiconductor chip 110.
- the displacement mass 141 is thus located directly in the emission region of the semiconductor chip 110, and can be directly irradiated by the primary radiation 170 emitted from the front side or vertically at the front side. In a passage of the primary radiation 170 by the displacement of mass 141, occurs because of the Def ⁇ lens of phosphor particles 135, no radiation conversion on. Compared to the output arrangement 100, the component 102 can therefore produce a mixed radiation 179 in which the ratio of the primary radiation 170 and the conversion radiation 175 is shifted in favor of the primary radiation 175. This is with a corresponding color change of the
- the addition of the displacement mass 141 may result in the component 102 having a greater angular dependence of the color location of the mixed radiation 179 than the output arrangement 100.
- a configuration of the potting compound 130 with additional, be provided in the sealing compound 130 contained ⁇ NEN scattering particles (not shown).
- an individual correction can be effected, for example, by the measurement (step 202) taking place in dependence on the measurement at the underlying output arrangement 100
- Step 203 is predetermined an amount matched to converter-free potting material for the displacement mass 141 and introduced into the potting compound 130. Instead, as shown in Fi gur ⁇ 3, only a displacement mass 141 trainees ⁇ , a plurality of separate displacement masses 141,110owskilie ⁇ restricting portion in the sealing compound 130 may be arranged in one of the front side of the semiconductor chip.
- Figure 4 illustrates a view similar to Figure 3 Korrekturme ⁇ Thode, which leads to the production of an optoelectronic construction elements 103rd
- the correction in step 203 takes place in that a plurality of displacement masses 142 are introduced from a potting material without luminescent material particles in the ungehär ⁇ tete potting compound 130.
- the component 103 may be formed with a larger number of such displacement masses 142.
- the displacement of masses 142 are ter Kunststoff not opposite to the front side of the semiconductor chip 110 in a region above the semiconductor chip 110, but the UN to Figure 3, but laterally or laterally ver ⁇ set to the semiconductor chip 110 in the potting compound 130 is a ⁇ accommodated.
- the converter-free displacement masses 142 may have the same potting material as the potting compound 130. Furthermore, the introduction can be done using a nozzle, not shown.
- the displacement of masses are positioned 142 in the device 103 such that the displacement of masses 142 are irradiated directly from an obliquely emitted from the semiconductor chip 110 of the primary radiation 170 NEN kön-.
- an embodiment of the potting compound 130 with additional scattering particles contained in the potting compound 130 can likewise be provided (not illustrated).
- the improvement of the angular characteristic of the color locus can be enhanced.
- a significantly lower particle density of the scattering particles can be provided.
- the component 103 can have a high efficiency.
- an individual adaptation can take place, for example, in that, depending on the measurement carried out on the underlying output arrangement 100 (step 202) in FIG.
- Step 203 Parameters such as insertion positions, amounts of converter-free potting material used for the displacement masses 142 and / or a number of displacement masses 142 are given.
- the displacement masses 142 may be positioned symmetrically around the semiconductor chip 110 when viewed from above.
- a plurality of displacement masses 142 may be arranged in a circle around the semiconductor chip 110.
- the semiconductor chip 110 rotating in the plan view (for example, circle-shaped circumferential ⁇ ) displacement composition may optionally be provided 142nd
- a plurality of adjoining or merging displacement masses 142 may be introduced into the potting compound 130.
- an off ⁇ design of the sealing compound 130 may be provided with additional Streuparti- not to improve the angle characteristics of the color location (not shown).
- An individual Cor ⁇ rection can be carried out, for example, in that in dependence of the performed on the underlying output arrangement 100 measurement (step 202) in step 203, the amount of displacement of masses 142 and / or the amount is set to used convertor free potting material. Instead of a plurality of displacement masses 142, only a single displacement mass 142 can be formed. In the case of the components 102, 103, 104 of FIGS. 3 to 5, the displacement masses 141, 142 have a converter-free potting material as described above.
- a Cor ⁇ rection of the mixed radiation may be 179 carried out by means of displacement of masses having a potting material with embedded phosphor particles.
- a portion of the primary radiation 170 can also be converted into a light radiation.
- This radiation can be attributed to the conversion radiation 175.
- the converted displacement masses may differ by the phosphor particles, for example, by Kon ⁇ concentration of the phosphor particles, of the sealing compound 130th
- Figure 6 shows a further optoelectronic device 105, wel ⁇ ches has substantially the same construction as the device 102 of FIG. 3 For comparable details, therefore, reference is made to the above description of the device 102 taken.
- the correction takes place in that a displacement mass 143 is introduced into the potting compound 130 of the underlying output arrangement 100, which has a potting material 135 filled with luminescent material particles.
- the Verdrän ⁇ mass supply 143 is introduced into a viscous state in which also present in a viscous state casting mass ⁇ 130th
- the introduction which has the consequence of increasing the potting height, can take place with the aid of a suitable metering device (not shown).
- the displacement of the mass 143 is, like the converter free displacement ⁇ mass 141 of the device 102 positioned in a region above the semiconductor chip 110, and, opposite to the front side of the semiconductor chip 110th
- the displacement mass 143 and the potting compound 130 may have the same potting material and the same phosphor particles 135.
- the phosphor particles 135 can be configured to play ⁇ In accordance with the above description, into a yellow Konversi ⁇ onsstrahlung 175 blue-violet primary radiation 170th As indicated in Figure 6, the displacement mass 143 differs by the Parti ⁇ kelêt of the potting compound 130. In the displacement of the mass 143, the concentration of phosphor particles is 135 gerin- ger than in the sealing compound 130th
- the displacement mass 143 of the component 105 is located directly in the Abstrahlbe ⁇ rich of the semiconductor chip 110, and can be directly irradiated by the front vor worked emitted primary radiation 170.
- the displacement mass 143 In a passage of the primary radiation 170 by the displacement of mass 143, reduced in contrast to the displaced sealing compound 130 radiation conversion occurs due to the lower concent ration ⁇ of phosphor particles 135 on. Therefore, it can be achieved in a corresponding manner that the component 105 generates a mixed radiation 179 with a color location changed in relation to the output arrangement 100 (ie in this case color locus shift in favor of the primary radiation 170 and in the direction of the blue spectral range).
- Converting displacement masses can also be used in other ways for correcting an output arrangement 100.
- the displacement masses can, for example, have the same phosphor particles 135 as the potting compound 130, and with a lower particle density for producing a reduced radiation conversion.
- both the casting compound 130 and a displacement matrix introduced for correction can have the same mixture of phosphor particles 135.
- the first phosphor particles to emit a yellow-green light radiation and second phosphor particles for emitting a red light radiation can differ by a different or lower Parti ⁇ kelêt of the potting compound 130th
- the potting compound 130 and used for correcting kon ⁇ vertierende displacement mass can differ in other ways and means than the particle density of each other under ⁇ .
- a displacement mass may comprise a different kind of phosphor particles than the potting compound 130, so that the displacement mass and the potting compound 130 convert the primary radiation 170 into light radiation of different spectral ranges. It is also possible to provide different mixtures of different ones
- Phosphor particles in the displacement mass and in the potting compound 130 or an embodiment of the potting compound 130 with a mixture of different phosphor particles and an embodiment of the displacement mass with only one type of phosphor particles (or vice versa).
- Step 202 203 parameters such as a Pope ⁇ -generating amount of a filled phosphor particles potting material, an introducing position and / or a number of displacement compositions are given in the step. It is also possible to select a particle-filled potting material from a plurality of particle-filled potting materials, which may differ from each other, for example, by the particle density, the type and / or the mixture of the phosphor particles.
- step 204 This includes, for example, hardening of the casting compound 130, which can take place within the framework of a temperature or furnace process.
- Displacement masses which have a potting material, for example, the displacement of sen 141, 142, 143 of the components 102, 103, 104, 105 of Figures 3 to 6, are cured in this process with.
- step 204 Another process that can be performed in step 204 is a singulation process to provide separate components.
- multiple components may be formed together on a common carrier 120 having multiple cavities 121.
- a plurality of adjoining output arrangements 100 can be provided in step 201, and in step 202 thereof
- the individual assemblies may be individually corrected in dependence of the time measurement result jewei ⁇ 100th In the ⁇ ser respect, it is also conceivable to carry out different ones of the above-indicated correction methods. For example, a part of the output arrangements 100 according to FIG. 2 and another part of the output arrangements 100 according to FIG. 3 can be corrected. Depending on the measurement of an output arrangement 100, it may further be considered not to carry out a correction, so that the step 203 for this output arrangement 100 is omitted. This is the case, for example, when the mixed radiation 179 emitted by the relevant output arrangement 100 corresponds to a predetermined specification. After curing, the contiguous carrier 120 can be divided or sawed into separate carriers 120, whereby isolated components are present.
- Another possible embodiment is to provide different potting materials for a potting compound 130 and a displacement mass. Also may be provided that an introduced in a potting compound 130 displacement ⁇ mass having a greater concentration of phosphor particles as the potting compound 130th Furthermore, it can be considered to form a displacement mass having a potting material with additional scattering particles embedded in the potting material.
- a component having a fixed body 140 (see FIG. 2) and with converter-free displacement masses 142 laterally offset from a semiconductor chip 110 see FIG.
- a component can also be formed with a plurality of different sized displacement masses of a potting material who ⁇ .
- a further variant is a component which has both at least one converter-free displacement mass made of a potting material and at least one converting Ver ⁇ displacement mass of a potting material with embedded phosphor particles.
- Also possible is an embodiment of a device with different konvertie ⁇ leaders displacement masses from a container filled with phosphor particles potting material, whereby the converted
- Displacement masses by the particle density, the nature and / or the mixture of the phosphor particles from each other different ⁇ can.
- one possible modification is to measure a light radiation 179 (step 202) and a matched one. to repeat (at least) a displacement mass in a potting compound 130 (step 203), if necessary several times.
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Abstract
Description
Claims
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DE112014001282.3T DE112014001282A5 (de) | 2013-03-12 | 2014-02-06 | Herstellung eines optoelektronischen Bauelements |
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DE102013204293.0 | 2013-03-12 | ||
DE102013204293.0A DE102013204293A1 (de) | 2013-03-12 | 2013-03-12 | Herstellung eines optoelektronischen Bauelements |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9893230B2 (en) | 2015-03-06 | 2018-02-13 | Osram Gmbh | Producing a lighting module |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016116744A1 (de) | 2016-09-07 | 2018-03-08 | Osram Opto Semiconductors Gmbh | Strahlungsemittierendes Bauelement |
DE102021117801A1 (de) | 2021-07-09 | 2023-01-12 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Herstellungsverfahren und optoelektronischer halbleiterchip |
DE102022124732A1 (de) | 2022-09-26 | 2024-03-28 | Ams-Osram International Gmbh | Verfahren zur herstellung eines optoelektronischen bauteils und optoelektronisches bauteil |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2117055A2 (de) * | 2008-05-05 | 2009-11-11 | Cree, Inc. | Verfahren zur Herstellung lichtemittierender Vorrichtungen |
US20100038665A1 (en) * | 2006-10-12 | 2010-02-18 | Panasonic Corporation | Light-emitting device and method for manufacturing the same |
EP2503605A2 (de) * | 2010-09-15 | 2012-09-26 | Lightizer Korea Co., Ltd | Lichtemittierende diode und verfahren zu ihrer herstellung |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2013315A2 (de) * | 2006-04-27 | 2009-01-14 | Philips Intellectual Property & Standards GmbH | Beleuchtungssystem mit strahlungsquelle und leuchtstoff |
-
2013
- 2013-03-12 DE DE102013204293.0A patent/DE102013204293A1/de not_active Withdrawn
-
2014
- 2014-02-06 DE DE112014001282.3T patent/DE112014001282A5/de not_active Withdrawn
- 2014-02-06 WO PCT/EP2014/052346 patent/WO2014139735A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100038665A1 (en) * | 2006-10-12 | 2010-02-18 | Panasonic Corporation | Light-emitting device and method for manufacturing the same |
EP2117055A2 (de) * | 2008-05-05 | 2009-11-11 | Cree, Inc. | Verfahren zur Herstellung lichtemittierender Vorrichtungen |
EP2503605A2 (de) * | 2010-09-15 | 2012-09-26 | Lightizer Korea Co., Ltd | Lichtemittierende diode und verfahren zu ihrer herstellung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9893230B2 (en) | 2015-03-06 | 2018-02-13 | Osram Gmbh | Producing a lighting module |
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DE112014001282A5 (de) | 2015-11-26 |
DE102013204293A1 (de) | 2014-09-18 |
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