WO2015091670A1 - Optoelektronisches bauelement und verfahren zur herstellung eines optoelektronischen bauelements - Google Patents
Optoelektronisches bauelement und verfahren zur herstellung eines optoelektronischen bauelements Download PDFInfo
- Publication number
- WO2015091670A1 WO2015091670A1 PCT/EP2014/078263 EP2014078263W WO2015091670A1 WO 2015091670 A1 WO2015091670 A1 WO 2015091670A1 EP 2014078263 W EP2014078263 W EP 2014078263W WO 2015091670 A1 WO2015091670 A1 WO 2015091670A1
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- WO
- WIPO (PCT)
- Prior art keywords
- phosphor
- cavities
- semiconductor chip
- optoelectronic component
- conversion element
- Prior art date
Links
- 230000005693 optoelectronics Effects 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 60
- 239000011159 matrix material Substances 0.000 claims abstract description 60
- 239000004065 semiconductor Substances 0.000 claims abstract description 54
- 239000011521 glass Substances 0.000 claims abstract description 35
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 111
- 230000005855 radiation Effects 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 47
- 239000000853 adhesive Substances 0.000 claims description 38
- 230000001070 adhesive effect Effects 0.000 claims description 38
- 229920000642 polymer Polymers 0.000 claims description 26
- 239000002904 solvent Substances 0.000 claims description 12
- 230000003595 spectral effect Effects 0.000 claims description 9
- 239000002096 quantum dot Substances 0.000 claims description 6
- 150000002894 organic compounds Chemical class 0.000 claims description 5
- 150000004767 nitrides Chemical class 0.000 claims description 4
- 230000005684 electric field Effects 0.000 claims description 3
- 239000006060 molten glass Substances 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 150000003568 thioethers Chemical class 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 239000012790 adhesive layer Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000002223 garnet Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 nitride compound Chemical class 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- PSNPEOOEWZZFPJ-UHFFFAOYSA-N alumane;yttrium Chemical compound [AlH3].[Y] PSNPEOOEWZZFPJ-UHFFFAOYSA-N 0.000 description 1
- OFOSXJVLRUUEEW-UHFFFAOYSA-N aluminum;lutetium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Lu+3] OFOSXJVLRUUEEW-UHFFFAOYSA-N 0.000 description 1
- PCTXFKUTDJMZPU-UHFFFAOYSA-N aluminum;oxygen(2-);terbium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Tb+3] PCTXFKUTDJMZPU-UHFFFAOYSA-N 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000990 laser dye Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 150000002979 perylenes Chemical class 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000005373 porous glass Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/883—Chalcogenides with zinc or cadmium
-
- 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
-
- 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
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0041—Processes relating to semiconductor body packages relating to wavelength conversion elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/005—Processes relating to semiconductor body packages relating to encapsulations
Definitions
- the invention relates to an optoelectronic component, and to a method for producing an optoelectronic component.
- optoelectronic semiconductor chip e.g. a
- LED chip light-emitting diode
- LEDs Essentially defined by its band gap. Therefore, LEDs only emit light in a narrow spectral
- Conversion elements consists in a significant dispersion of the light emitted by the semiconductor chip to the in the
- Ceramic conversion materials are known, wherein the ceramic material consists of a phosphor and is applied to the light exit side of an LED chip.
- the ceramic material consists of a phosphor and is applied to the light exit side of an LED chip.
- several ceramic layers can be used, each layer a specific
- the emitted radiation of this conversion element has a high angle dependence.
- An optoelectronic component which has an optoelectronic semiconductor chip and an optoelectronic semiconductor chip arranged on the optoelectronic semiconductor chip
- the conversion element comprises a matrix material comprising a glass frit and a first phosphor and cavities embedded in the glass frit. In the cavities of the matrix material, a second phosphor is arranged.
- the matrix material comprising the glass frit into which the first phosphor is embedded and the cavities may also be referred to as a porous glass frit, that is to say a glass frit
- Fluorescent is embedded, exist or more
- the cavities may be at least partially connected to each other
- the glass frit can be used as main component of Si0 2, B 2 O 3, P 2 O 5, Ge0 2, As 2 0 3, As 2 0 5, MgO, A1 2 0 3, Ti0 2, PbO and / or ZnO
- the glass frit in addition to the main component alkali and / or alkaline earth metal oxides such as Na 2 0, K 2 0, CaO, SrO and BaO.
- the glass frit may consist of the main component and an alkali and / or
- Alkaline earth metal exist.
- the glass frit consists of Si0 2 and Na 2 0.
- the optoelectronic semiconductor chip is emitted, for example, from the optoelectronic semiconductor chip, at least partially absorb and
- the conversion elements contain phosphors which contain luminescent materials. If only a portion of the primary radiation is absorbed by the phosphors, this process will be considered partial conversion designated.
- the wavelength of the primary and secondary radiation can vary within the UV to IR range, wherein the wavelength of the secondary radiation is greater than the wavelength of the primary radiation.
- the optoelectronic semiconductor chip can be used, for example, as a light-emitting diode with one on an arsenide,
- Phosphide and / or nitride compound semiconductor material system based semiconductor layer sequence to be carried out with an active, light-generating region.
- the optoelectronic component with the semiconductor chip and the conversion element may furthermore, for example, on a support and / or in a housing or encapsulation
- lead frame a so-called lead frame
- the optoelectronic semiconductor chip emits a primary radiation, wherein the conversion element is arranged in the beam path of the primary radiation.
- the first phosphor converts the primary radiation at least partially into a first one
- Secondary radiation and the second phosphor converts the primary radiation at least partially into a second one
- the total emission of the optoelectronic component is thus a superposition of the primary radiation, the first one
- the first phosphor includes rare earth doped garnets. In a preferred embodiment, the first phosphor
- the first phosphor may be doped with an activator selected from the group consisting of cerium, europium,
- neodymium neodymium, terbium, erbium, praseodymium, samarium, and manganese. Examples of these are cerium-doped
- Yttrium aluminum garnets and cerium-doped lutetium aluminum garnets are cerium-doped lutetium aluminum garnets.
- the second phosphor may be selected from a group including silicate compounds, sulfide compounds, nitrides,
- the invention is thus not limited to the use of an inorganic compound as a second phosphor.
- organic compounds laser dyes, e.g.
- the second phosphor may be embedded in a polymer.
- the polymer may be a transparent adhesive.
- the term "transparent" means that the adhesive is largely or completely permeable to the radiation emitted by the optoelectronic component.
- low-viscosity silicones can be used as the polymer or transparent adhesive Matrix material are completely filled with the polymer and are therefore free of air. Because of the better
- the optoelectronic device increases. That is, at least some, in particular all, of the cavities can be completely filled within the manufacturing tolerance with the mixture of the second phosphor and polymer or transparent adhesive. In particular, it is possible that the
- Glue is glued to the outer surface of a semiconductor chip. Also at this point, the polymer or the
- Primary radiation and thus disposed on a light exit side of the semiconductor chip, has according to a
- Embodiment in a range between 50 and 200 ym, more preferably between 80 and 150 ym. This ensures on the one hand a certain stability of the device during the manufacturing process and on the other hand does not exceed a certain thickness to the device
- the conversion element can by means of a transparent
- Adhesive may be mounted on the semiconductor chip. It can the conversion element may be mounted on the semiconductor chip by means of an adhesive layer containing or consisting of the transparent adhesive.
- the transparent adhesive is a silicone.
- the transparent adhesive may have a structural similarity to the transparent adhesive in which the second phosphor is embedded, but one
- the adhesive layer comprises a transparent adhesive that is identical to the transparent adhesive in which the second phosphor
- Adhesive layer are made over the adhesive containing the second phosphor which is in the cavities of the
- Matrix material is arranged and also reaches the surface of the matrix material via pores, which reach up to the surface of the matrix material.
- the adhesive layer may contain the second phosphor. It is possible that the adhesive layer consists of the transparent adhesive and the second phosphor.
- the primary radiation is from the ultraviolet to blue spectral range, the first
- the first and second phosphors can convert the ultraviolet to blue primary radiation completely or partially into the respective secondary radiation.
- the superimposition of all three radiations, or complete conversion, of the two secondary radiations produces a warm white light impression.
- the spectrum of the emitted light can by the concentration of the first and second
- Fluorescent can be varied.
- the color of the radiation emitted by the optoelectronic component can be regulated by additionally applying to the conversion element a layer of a polymer in which the second phosphor is embedded.
- the thickness of such an additional layer, as well as the concentration of the second phosphor within this layer may vary depending on
- Radiation and depending on the second phosphor be selected from the range 1 nm to 50 ym and 0.1 to 70 weight percent based on the polymer. Is the second phosphor on?
- the thickness may be selected from a range of 1 to 10 ym and the concentration may be selected within a range of 1 to 10 weight percent.
- Phosphor is a quantum dot or an organic compound, the thickness may range from 1 to 10 nm and the concentration may range from 0.01 to 0.5
- Weight percent for example, 0.05 weight percent
- the homogeneous distribution of the second phosphor within the cavities of the matrix material ensures homogeneous color mixing of the primary radiation emitted by the optoelectronic semiconductor chip and the second secondary radiation emitted by the first phosphor and by the second phosphor or with complete conversion of the first and second phosphors emitted by the first phosphor emitted second secondary radiation
- the matrix material has a higher overall thermal conductivity than, for example, a pure silicone matrix, thereby providing efficient heat dissipation during operation of the
- the concentration of the first phosphor and of the second phosphor can vary depending on the desired hue, the radiation emitted by the component and, depending on the choice of the first and second luminescent material, from 0.1 to 70
- the concentration may be one
- the concentration may be selected from a range of 1 to 10% by weight.
- the concentration of the first phosphor may range from 1 to 10% by weight
- the method comprises the following method steps: A) providing a semiconductor chip, e.g. an LED chip, B) producing a conversion element and C) arranging the
- method step B) comprises the method steps B1) producing a matrix material comprising a glass frit, a first phosphor embedded in the glass frit and cavities, and B2) arranging a second phosphor in the cavities of the matrix material.
- molten glass is mixed with the first phosphor, pulverized and sintered.
- the sintering may take place at a temperature between 200 and 1000 ° C, for example at 400 ° C.
- the sintering process is below the melting temperature of the glass.
- the size of the cavities can through the
- the size of the cavities may be in the ym range, whereas the size of the cavities may be in the nm range when using organic molecules and quantum dots.
- the second phosphor can be mixed with a solvent and introduced into the cavities
- the solvent can evaporate and / or be evaporated.
- the evaporation can depending on the solvent at temperatures between 20 ° C and 100 ° C.
- the introduction of the second phosphor into the cavities may be at least partially under the
- the solvent can be selected from a group comprising toluene, acetone, pentane, Cl-benzene, isopropanol, heptane and xylene.
- Process step B2) applied an electric field.
- Cavities of the matrix material, if the second phosphor has a charge can be amplified. This can do that
- Matrix material are placed in a container filled with a solvent.
- the solvent used is isopropanol.
- the matrix material is in contact with a metallic, electrically conductive carrier.
- Matrix material filled with a polymer The polymer has a higher thermal conductivity than air, which ensures more efficient cooling during electrical operation.
- the second phosphor embedded in a polymer is introduced into the cavities of the matrix material. This can, for example, with partial use of
- the advantage of this embodiment is that the use of a solvent to to introduce the second phosphor into the cavities of the matrix material is not needed and thus the
- this adhesive can also be simultaneously attached to the matrix material on the optoelectronic semiconductor chip. Due to the combination of a matrix material that one
- Matrix material a chemical reaction between the two phosphors during process step B) is at least largely avoided because the second phosphor only after completion of the process step Bl) in another
- Process step B2) is introduced into the cavities of the matrix material.
- the matrix material For example, one possible
- step Bl Temperatures that are applied during sintering in step Bl) avoided. Furthermore, the second phosphor will otherwise not experience high temperatures, e.g. through contact with liquid glass.
- a second phosphor can also be selected a material which is unstable at high temperatures, and therefore for a sintering process, as he, for example, in
- Process step Bl) can be performed is unsuitable.
- the first phosphor on the other hand, can be a material
- the completed conversion element is placed on the
- the conversion element in method step C) can be glued onto the semiconductor chip by means of a transparent adhesive.
- a transparent adhesive layer is arranged on the semiconductor chip in method step C), on which the conversion element can be arranged.
- the matrix material is positioned over the semiconductor chip, wherein the second phosphor is introduced with the adhesive by pressing the matrix material on the semiconductor chip in the cavities of the matrix material.
- Figure 1 shows the schematic side view of a
- FIG. 2 shows the schematic side view of FIG
- FIG. 3 shows the schematic side view of FIG
- Figure 4 shows the schematic side view of a
- FIG. 5 shows the schematic side view of FIG
- Figure 6 shows the schematic side view of a
- Optoelectronic device according to one embodiment.
- identical, identical or equivalent elements can each be provided with the same reference numerals.
- the illustrated elements and their proportions with each other are not to be regarded as true to scale, but may individually elements, such as layers, components, components and areas may be exaggerated in size for ease of illustration and / or understanding.
- Figure 1 shows the schematic side view of a
- Optoelectronic semiconductor chip 5 are arranged on a support 4 and a conversion element 1 on the semiconductor chip 5.
- the optoelectronic semiconductor chip 5 is contacted in this example by the first contact 2 and the second contact 6.
- FIGS. 4 and 6 which respectively show embodiments of optoelectronic components 14, for the sake of clarity, carrier 4, encapsulation 3 and contacts 2,6 are not shown.
- FIG. 1 A possible manufacturing method for a matrix material is shown in FIG.
- the mixture of powdered first phosphor 8 and glass powder 7 is sintered in a further step B12.
- the size of the cavities 10 can be determined by the temperature during the sintering process, as well as the grain size of the powdered glass 7 and the first used
- Phosphor 8 can be influenced in powder form.
- FIG. 3 shows a schematic side view of FIG
- the second adhesive 11 containing the transparent adhesive 12 is disposed on the light exit side 13 of the optoelectronic semiconductor chip 5. Subsequently, by the application of pressure, the matrix material 9 with the
- Optoelectronic semiconductor chip 5 are connected, which is indicated by the arrows in Figure 3.
- the matrix material 9 has cavities 10 which, inter alia, project on its outer surface, so that the transparent substance 12 containing the second phosphor 11 can penetrate into these cavities 10. This process can be promoted by occurring capillary forces.
- Complete filling of the cavities 10 with the second adhesive 11 containing the transparent adhesive 12 may also be carried out an additional pressurization, the pressure is so great that the cavities 10 are completely filled with adhesive 12 and the second phosphor In this process step is simultaneously made the conversion element 1, ie the second
- Figure 4 shows the schematic side view of a
- Embodiment The component is produced by the method described with reference to FIGS. 2 and 3, such that the second phosphor 11, which in turn is embedded in the transparent adhesive 12, is arranged in the cavities 10 of the matrix material 9. Between the optoelectronic
- Semiconductor chip 5 and the conversion element 1 thus arises a thin adhesive layer of the second phosphor 11 containing transparent adhesive 12, which establishes the connection between the conversion element 1 and the optoelectronic semiconductor chip 5.
- the optoelectronic semiconductor chip 5 During operation of the optoelectronic component 14, the optoelectronic semiconductor chip 5 generates upon supply of
- the first phosphor 8 contained in the matrix material 9 at least partially converts the primary radiation into a first secondary radiation in the yellow-green spectral range.
- the second converts
- Phosphor 11 at least partially the primary radiation into a second secondary radiation in the red spectral range.
- the superposition of all three radiations becomes a warm white
- the spectrum of the emitted light of the optoelectronic component 14 may include, in addition to the conversion element 1, a further layer containing the second phosphor 11 and the transparent adhesive 12, which may be on the
- Conversion element 1 is arranged to fine-tune the color impression of the radiation emitted by the optoelectronic component 14 depending on the application (not shown here).
- Figure 5 shows the schematic side view of a
- the second phosphor 11 is contained in a container 15 containing a solution and / or suspension 16 of the second phosphor 11 in toluene, acetone, pentane, Cl-benzene, isopropanol, heptane, xylene or a combination of these solvents,
- the matrix material 9 is at least partially immersed in the solution and / or suspension 16.
- the solution and / or suspension 16 can diffuse via the cavities 10 on the surface of the matrix material 9 in the cavities 10, which is at least partially due to occurring
- the matrix material 9 is removed again from the container 15 and the solvent and / or suspension 16 in the cavities 10 can evaporate and / or be vaporized.
- the second phosphor 11 remains within the cavities 10 of the
- this process can also - if the second phosphor 11 a
- the cavities 10 are then filled with a polymer, for example an adhesive 12 (not shown here).
- a polymer for example an adhesive 12 (not shown here).
- FIG. 6 shows the schematic side view of an optoelectronic component 14 according to FIG.
- the conversion element 1 via an adhesive layer 18, which contains a transparent adhesive on the light exit side 13 of the optoelectronic
- the adhesive layer 18 of thickness between 1 and 50 ym contains, for example, the transparent adhesive 12, for example silicones.
- Conversion element 1 filled with a polymer 17 in which the second phosphor 11 is embedded.
- Optoelectronic component emitted radiation, in addition, a layer of the second phosphor 11 containing polymer 17 on the conversion element. 1
- Concentration of the second phosphor 11 is introduced into the cavities of the glass frit.
- a second layer of the polymer 17 containing the second phosphor 11, for example a transparent adhesive 12 to the conversion element 1, the spectrum of the
- emitted light of the optoelectronic component 14 can be adjusted.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Led Device Packages (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/100,532 US20160300985A1 (en) | 2013-12-18 | 2014-12-17 | Optoelectronic Device and Method for Producing an Optoelectronic Device |
DE112014005953.6T DE112014005953A5 (de) | 2013-12-18 | 2014-12-17 | Optoelektronisches Bauelement und Verfahren zur Herstellung eines optoelektronischen Bauelements |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013114337.7 | 2013-12-18 | ||
DE102013114337 | 2013-12-18 | ||
DE102014101804.4A DE102014101804A1 (de) | 2013-12-18 | 2014-02-13 | Optoelektronisches Bauelement und Verfahren zur Herstellung eines optoelektronischen Bauelements |
DE102014101804.4 | 2014-02-13 |
Publications (1)
Publication Number | Publication Date |
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WO2015091670A1 true WO2015091670A1 (de) | 2015-06-25 |
Family
ID=53192682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/078263 WO2015091670A1 (de) | 2013-12-18 | 2014-12-17 | Optoelektronisches bauelement und verfahren zur herstellung eines optoelektronischen bauelements |
Country Status (3)
Country | Link |
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US (1) | US20160300985A1 (de) |
DE (2) | DE102014101804A1 (de) |
WO (1) | WO2015091670A1 (de) |
Cited By (1)
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EP3451031A4 (de) * | 2016-04-25 | 2019-12-11 | NGK Spark Plug Co., Ltd. | Wellenlängenumwandlungselement, herstellungsverfahren dafür und lichtemittierende vorrichtung |
Families Citing this family (8)
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DE102012110774A1 (de) * | 2012-11-09 | 2014-05-15 | Osram Opto Semiconductors Gmbh | Optoelektronisches Halbleiterbauteil |
CN106206904B (zh) * | 2015-04-29 | 2019-05-03 | 深圳光峰科技股份有限公司 | 一种波长转换装置、荧光色轮及发光装置 |
WO2017197392A1 (en) * | 2016-05-13 | 2017-11-16 | Osram Sylvania Inc. | Wavelength converters including a porous matrix, lighting devices including the same, and methods of forming the same |
KR102542426B1 (ko) | 2017-12-20 | 2023-06-12 | 삼성전자주식회사 | 파장변환 필름과, 이를 구비한 반도체 발광장치 |
US11637225B2 (en) * | 2017-12-20 | 2023-04-25 | Lumileds Llc | Converter with glass layers |
US10797207B2 (en) | 2018-07-30 | 2020-10-06 | Lumileds Llc | Light emitting device with porous structure to enhance color point shift as a function of drive current |
WO2020028350A1 (en) * | 2018-07-30 | 2020-02-06 | Lumileds Llc | Light emitting device with porous phosphor structure to enhance color point shift as a function of drive current |
US11217734B2 (en) * | 2018-12-27 | 2022-01-04 | Lumileds Llc | Patterned lumiramic for improved PCLED stability |
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US7075225B2 (en) * | 2003-06-27 | 2006-07-11 | Tajul Arosh Baroky | White light emitting device |
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US20120181919A1 (en) * | 2008-08-27 | 2012-07-19 | Osram Sylvania Inc. | Luminescent Ceramic Composite Converter and Method of Making the Same |
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2014
- 2014-02-13 DE DE102014101804.4A patent/DE102014101804A1/de not_active Withdrawn
- 2014-12-17 WO PCT/EP2014/078263 patent/WO2015091670A1/de active Application Filing
- 2014-12-17 US US15/100,532 patent/US20160300985A1/en not_active Abandoned
- 2014-12-17 DE DE112014005953.6T patent/DE112014005953A5/de not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
US20160300985A1 (en) | 2016-10-13 |
DE102014101804A1 (de) | 2015-06-18 |
DE112014005953A5 (de) | 2017-02-09 |
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