WO2016142267A1 - Optoelektronische vorrichtung und verfahren zur herstellung einer optoelektronischen vorrichtung - Google Patents
Optoelektronische vorrichtung und verfahren zur herstellung einer optoelektronischen vorrichtung Download PDFInfo
- Publication number
- WO2016142267A1 WO2016142267A1 PCT/EP2016/054547 EP2016054547W WO2016142267A1 WO 2016142267 A1 WO2016142267 A1 WO 2016142267A1 EP 2016054547 W EP2016054547 W EP 2016054547W WO 2016142267 A1 WO2016142267 A1 WO 2016142267A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- silicone
- optoelectronic device
- chemical compounds
- anchor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/84—Coatings, e.g. passivation layers or antireflective coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
- C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
- C08G77/385—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing halogens
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/4239—Adhesive bonding; Encapsulation with polymer material
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/01—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/01—Manufacture or treatment
- H10W72/0198—Manufacture or treatment batch processes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/756—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked lead frame, conducting package substrate or heat sink
Definitions
- the invention relates to an optoelectronic device and a method for producing an optoelectronic device.
- Optoelectronic devices often have components of silicones on their surfaces that can be sticky. Since high tackiness or high adhesion, for example to particles from the environment, can lead to a large number of production problems, but also in the operation of optoelectronic devices, it is desirable to increase the tackiness of the silicone outer surfaces of optoelectronic devices reduce.
- harder silicones can only be used in certain manufacturing processes. For many production methods, for example those in which bonding wires are used in the optoelectronic device, harder silicones can not be used or can lead to other problems.
- AdPS ⁇ sion provides a sealing of the surface with silicone non-adhesive polymers to glassy layers by means of active deposition by a plasma process.
- the starting material used here is the monomer hexamethyldisiloxane (HMDSO) or similar monomers (for example with other alkyl groups instead of the methyl group).
- HMDSO monomer hexamethyldisiloxane
- metal shell surfaces for example, lead frame
- Silberoberflä ⁇ Chen oxidize, discolor characterized and in particular their electrical contact or process-technical further processing (bonding, soldering) difficult.
- the invention is achieved by an optoelectronic device according to claim 1. Further refinements of the optoelectronic device and a method for producing an optoelectronic device with low tackiness are the subject matter of further claims.
- the invention according to the main claim 1 is an opto-electronic device comprising at least one
- Adhesion stands for stickiness, in particular for the inclination of the silicone outer surface to the adhesion of particles from the environment.
- particles may be, for example, particles as they are often found in large-scale manufacturing processes.
- it may be metal dusts or metal chips (eg with an average particle size of about 10-50 ym), ceramic dusts (eg with a mean particle size of a few micrometers) or separated silicone particles.
- the adhesion to particle adhesion can be determined experimentally by means of a particle adhesion test.
- the test particles In the P microadPSsionstest the tested silicone ⁇ surface is pressed, the test particles with the same intensity in each case comprising in a vessel.
- the Sili ⁇ konober Assembly can also be sprinkled.
- the surface is completely covered with particles and the sample and the reference sample are treated identically.
- the test particles can be, for example, chips to metal or act powders or other particles or particle mixtures, with which the expected pollution nachge ⁇ represents may be (in terms of size, shape and material). For particle adhesion tests, a large number of possible particles is thus conceivable.
- a particulate mixture of finely-ground ge ⁇ saline and pepper particles (6C Figures 6A, 6B) was used for Pumbleanhaftungstests.
- the inventors of the present invention have observed that with finely ground salt and pepper particles having an average particle size of about 5 to 500 ⁇ m, the particle adhesion to silicone surfaces can be simulated in a simple manner. After contacting with the particles, the silicone surface is blown off with air or nitrogen, removing loose particles while leaving adhesive particles on the surface.
- the tack properties of optoelectronic devices comprising silicones on at least one of their outer surfaces can be influenced by the attachment of chemical compounds.
- the anchor ⁇ group is thus bound to the silicone surface, while the head group is directed to the outside of the silicone or device surface away.
- Optoelectronic devices are important components of many products. When Her ⁇ position of these products can be fitted with or incorporation of optoelectronic devices is a key step. As seen optoelectronic devices of the present invention have a significantly lower tack on ⁇ , also these processes can be simplified. In particular, the placement of products with less personnel, less waste and overall higher degree of automation can be done. Thus, the present invention result laubt not only a reduction of the expense of the pro ⁇ production and packaging of optoelectronic devices themselves, but also production processes in which the optoelectronic devices be installed, can be so much more efficient.
- the inventors have also found that in erfindungsge ⁇ MAESSEN optoelectronic devices unwanted adhesion of particles from the environment is significantly reduced. This affects both the manufacturing process, as well as the subsequent operation.
- Particle adhesions undesirably affect the properties of optoelectronic devices.
- it may optoelectrochemical ⁇ African devices by retained particulate are used in radiation-emitting to a change in the emission characteristics. If it is for example in the optoelectronic device is a light emitting diode (LED), a rela Particle Adherence ⁇ hung as may result adhesion of particles to ambient brightness losses. Conversely, in the case of photosensitive devices, particulate adhesion can reduce sensitivity.
- a Particle Adherence is significantly reduced by the novel optoelectronic devices, which can have a positive impact on the efficiency and service life Le ⁇ the optoelectronic device.
- the inventors have also recognized that leave optoelectronic devices of the invention easily make manufacturing than conventional optoelectronic Vorrichtun ⁇ gen as a selective by the use of chemical compounds with anchor and head groups, the connection to the silicon surface is performed with the anchor group Connection to surface areas of the optoelectronic device having silicones can be made possible. In this way it may be possible to avoid a coating, for example of metal contacts, such as silver contacts. An elaborate subsequent exposure of the contacts, which must be electrically conductive, can thus be avoided.
- the optoelectronic devices according to the invention are thus easier to manufacture, because the adhesion-reducing coating can be controlled.
- a number of developments of the optoelectronic device according to the invention are presented below.
- a particularly preferred embodiment of the invention shown SEN optoelectronic device is characterized in that the groups attached to the silicon by means of anchor groups chemical compounds form a monomolecular layer. So it does not come to the formation of several superimposed layers on the silicone surface.
- the inventors of the present optoelectronic device have recognized that in this way particularly thin layers of a few nanometers, for example less than 100 nm, in particular less than 50 nm, preferably less than 10 nm, more preferably less than 5 nm, and particularly preferably less than 3 nm are possible.
- the adhesion to particle adhesion can be significantly reduced. So the desired effect can be with a small Ma ⁇ terialroot reach.
- Layer thicknesses can reduce the adhesion-reducing effect in some cases. It may therefore be preferred, for example, if a layer thickness of, for example, 0.5 nm is not exceeded .
- Another development of the optoelectronic device according to the invention is characterized by the fact that the chemical compounds bound to the silicone with the anchor group form a self-assembling monolayer (SAM: self-assembling monolayer).
- SAM self-assembling monolayer
- a self-assembling monolayer can be used to create a layer that shields the sticky silicone surface.
- a head group which is a linear or branched alkyl group, which may in particular also be fluorinated.
- the chemical compounds can be arranged particularly compactly on the silicone surface. Depending kom ⁇ more compact arrangement of the chemical compounds, the clearer the adhesion can be reduced to ambient particles eg.
- compact SAMs can be produced particularly well with linear alkyl groups or linear fluorinated alkyl groups. Fluorinated head groups lead to a particularly significant reduction of the adhesion, which is also the case in particle adhesion tests of the present invention. was occupied. In addition, fluorinated groups have the effect that they lead to a reduction of friction coeffi ⁇ cient. Coefficients of friction represent a measure of the sliding and in particular static friction and thus also reflect adhesion or adhesion properties.
- fluorinated head groups allow a reduction in the coefficient of friction, that is to say a reduction in the adhesion of the optoelectronic devices according to the invention. Fluorinated head groups can also reduce soiling of various kinds due to their high both hydrophobic and oleophobic properties. In some cases, even a self-cleaning effect may be possible because liquid droplets may bead on layers comprising fluorinated head groups and thereby additionally wash off particles.
- alkyl groups or fluorinated alkyl groups are always meant groups in particular having a chain length of Ci to Cioo, preferably Ci to C 5 o, more preferably Ci to C20, particularly prefers Ci to C 10 .
- Further preferred chain lengths are, for example, chain lengths in the range of C2 to C2 0 and C2 to C 1 0 and C3 to C20 and C3 to C 1 0.
- the inventors of the optoelectronic device according to the invention have recognized that even short alkyl groups, be short fluorinated alkyl groups can achieve the desired effect of reducing particle adhesion.
- the shorter the alkyl groups the thinner the layer that forms.
- the thinner the layer the less the other desired properties of the silicone are affected.
- the chain length of the alkyl groups or fluorinated alkyl group may be greater than or equal to C 2 , in particular greater than or equal to C 3 , so that the adhesion-reducing effect can be fully utilized.
- Alkyl group in particular a perfluorinated alkyl group.
- the inventors of the present invention have recognized that the adhesion is particularly significantly reduced by the use of head groups comprising fluorinated alkyl groups.
- the inventors have found that the reduced copy ⁇ tion of adhesion is more pronounced, the higher the degree of fluorination of the alkyl group. Consequently, the adhesion is particularly reduced when the alkyl group is an alkyl group containing many F atoms. Most preferred are perfluorinated
- Alkyl groups as head groups.
- inven- tion is a linear fluorinated insbeson ⁇ particular a linear perfluorinated alkyl group.
- the head group may be fluorinated, especially perfluorinated, methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl ,
- the anchor group of the chemical compounds is bound to the silicone by a covalent bond. So it's a directional bond.
- the chemical compounds are thus bound by chemisorption to the silicone surface. Such a connection is particularly stable.
- the anchor group of the chemical compounds is bound by a covalent bond to chemically active centers of the silicone surface.
- chemically active sites may be doing to functional groups on the silicon surface which to ⁇ due to their chemical nature suitable to the anchor group of the chemical compounds forming covalent bonds.
- the nature of the chemically active centers on the silicone surface can be influenced by various types of pretreatment of the silicone.
- various plasma treatments are conceivable.
- different types of gases or gas mixtures can be used.
- wet-chemical pretreatments are conceivable. But it is also possible in principle to NEN active surface centers of the silicone without pretreatment.
- the anchor group may be an electrophile and the active surface center on the silicone surface may be a nucleophile and vice versa.
- Typical active surface centers on the silicone surface may be, for example, silicone surface OH, silicone surface OOH, but also silicone surface R c -COOH, where R c is a hydrocarbon radical, for example a methylene radical.
- the anchor group of the chemical compounds is a group selected from one of the following groups:
- radicals Xi to X 3 are independently selected from the group comprising -Cl, -Br, -I, -OH, -ORi, -H, -Ri,
- radicals Xi to X 3 may be -H or Ri, wherein Ri is an alkyl, and X4 is selected from the group comprising -Cl, -Br, -I, -OH, -H, -OSiXiX 2 X 3
- X5, Xe are independently selected from the group comprising
- X7 is selected from the group comprising
- R 1 is a short-chain alkyl radical, for example an alkyl radical of chain length C 1 to C 7. Particularly preferred are methyl, ethyl, propyl, butyl and pentyl. Most preferred are methyl and ethyl.
- connection point to which the head group can be bound.
- a middle group can join at this point, which in turn can be arranged between the anchor group and the head group.
- anchor groups is e.g. a connection to the silicone surface to form acid esters (for example, carboxylic acid esters, sulfonic acid esters, etc.) but also to form urea derivatives or urethane bonds possible.
- acid esters for example, carboxylic acid esters, sulfonic acid esters, etc.
- the head group is an at least partially fluorinated linear or branched alkyl group
- anchor group of the chemical compounds is selected from one of the following groups:
- radicals Xi to X 3 are independently selected from the group comprising -Cl, -Br, -I, -OH, -ORi, -H, -Ri,
- radicals Xi to X 3 may be -H or Ri, wherein Ri is an alkyl, and
- X4 is selected from the group comprising
- X5, Xe are independently selected from the group comprising
- X7 is selected from the group comprising
- the anchor group is a group of the following general ⁇ my formula: X 1
- radicals Xi to X 3 are independently selected from the group comprising -Cl, -Br, -I, -OH, -ORi, -H, -Ri,
- radicals Xi to X 3 may be -H or Ri, wherein Ri is an alkyl.
- Such a silyl anchor By using such a silyl anchor, a strong attachment of the chemical compound to the silicone surface can be achieved.
- Such anchor groups form in particular stable covalent bonds with the already mentioned hydroxy groups or hydroperoxy groups (silicone surface OH, silicone surface OOH) as chemically active surface centers.
- a covalent bond is not only formed between the silyl anchor and the silicone surface, but also depending on the choice of the radicals X 1 -X3 covalent bonds between the anchor groups of adjacent chemical compounds can be formed, whereby an even more stable Anchoring can be achieved. This is especially possible when two or all three of the radicals X 1 -X 3 are selected from Cl, -Br, -I, -OH, -ORi.
- nucleophilic groups for example amino groups, for example -H 2
- anchor groups are also possible for the anchor groups.
- the central group may be directly covalently linked to the anchor group on one hand and to the head group on ⁇ other hand.
- a sour ⁇ substance or a sulfur atom or another bridge atom is, via which the connection is made. The same applies to the bond between the middle group and the head group.
- a head group a strongly fluorinated alkyl radical (eg, an alkyl radical in which more than 50% of the H atoms by F atoms, preferably more than 75% of the H atoms by F- are replaced atoms), in particular a perfluorinated to use Al ⁇ kylrest, while it is sufficient for with ⁇ telelle to use conventional alkyl fluorination without or with only partial fluorination.
- the middle group also has perfluorinated alkyl radicals.
- the middle group is selected from the group consisting of linear alkyls, linear fluorinated alkyls, polyethylene glycol, polyethylenediamine, siloxanes and silanes.
- the central group comprises before ⁇ Trains t between 1 and 100 carbon atoms or silicon atoms in the backbone of the middle group, in particular between 1 and 50, more preferably between 1 and 20, more preferably between 1 and 10, and most preferably between 1 and 5 carbon atoms or Silicon atoms on.
- the optoelectronic device is designed as a radiation-emitting optoelectronic device, in particular as a light-emitting diode.
- a different development of the optoelectronic device according to the invention is configured as a photodetector. Since transparency and radiation transmission entspre ⁇ -reaching silicones is hardly or not influenced by controlling the thickness of the connected che ⁇ mix compounds that make up more than a monolayer film of ⁇ , the present optoelectronic devices of the invention are also suitable for use in the beam path of radiation-emitting devices , In particular, radiation-emitting devices are affected by particle buildup, since their emission characteristics and brightness can be adversely affected by particle adhesion. Adhesion reduction can therefore positively impact performance, reliability, and in some cases even lifetime. In another development, the silicone is the outer one
- part of an encapsulation material part of a Ver ⁇ casting material, for example, a radiation-transmissive lens or part of an outer, so located on the outer surface of the optoelectronic device wavelength conversion layer.
- Another embodiment of the optoelectronic device according to the invention is dimethylsiloxane-based elastomers, in particular silicones based on dimethylsiloxane or partially phenylated dimethylsiloxane.
- the invention further relates to a method for producing an optoelectronic device comprising the method steps:
- Head groups of the chemical compounds is reduced.
- the inventors of the present invention have observed that such a method makes it possible to reduce the stickiness ie particle adhesion or the coefficient of friction of optoelectronic components without at the same time coating any metal contacts present (eg contacts of the leadframe). This facilitates the further machining ⁇ processing of the optoelectronic device significantly since the metal contacts have to be exposed not only prior to soldering or bonding, so for the electrical contact.
- extremely thin and well-controlled layer thicknesses are achieved in the method according to the invention, even in the case of an undesirable coating usually be exposed to exposure of the contacts, since the layer thicknesses are sufficiently thin so as not to adversely affect the electrical properties influence.
- the process is characterized by low technical complexity and lower costs compared to conventional methods.
- a preferred embodiment relates to the inventive method, wherein in step C) a covalent bond between see the anchor group and the silicone surface is formed. Covalent bonds allow a directed and special ⁇ DERS stable attachment of the chemical compounds.
- a preferred further relates to method of the invention, wherein the outer surface is subjected to a pretreatment prior to the method step ⁇ C).
- pretreatment is meant a surface treatment or surface functionalization.
- the type of treatment is to the type of sub ⁇ base materials, so the properties of the silicone ⁇ fit, as well as the nature of the anchor group of the chemical compound.
- Examples of pretreatments may be UV radiation or plasma treatment.
- UV radiation and / or plasma treatment can break chemical bonds on the surface of the silicone and create highly reactive or metastable groups such as radicals or hydroperoxides. They increase the reac ⁇ tivity of the silicone surface and can either react even with the anchor function of the chemical compounds or functional groups on the silicone surface (eg
- Another development of the invention relates to a method according to the invention, wherein the outer surface is pretreated with a plasma prior to method step C).
- Be ⁇ Sonder highly suitable plasmas are, for example, Sau ⁇ erstoff plasma, argon plasma and NH3 plasma or plasma from mixtures of these gases. But other common plasma treatment can be used.
- the inventors of the present invention have found that by using an oxygen plasma, the density of the chemically active surface centers on the silicone surface, in particular silicone surface OH and silicon surface OOH, but also silicone surface R c -COOH (where R c is a
- Alkyl group eg methylene is "silicone surface OH" stands for hydroxy groups bound to the silicone surface; this applies analogously to the other groups described) can be significantly increased. Las on this way much sen more chemical compounds bind to the silicon surface, resulting in a stronger Adphasesminde ⁇ tion.
- nitrogen-containing surface centers can be produced, for example, the previously mentioned centers, silicone surface NY 2 .
- Such centers are suitable, for example, for linking anchor groups based on isocyanates.
- non-oxidizing plasmas come Ver ⁇ the method step C) in the pretreatment used.
- the inventors of the present invention have recognized that the process according to the invention can increase the density of the active surface chemical sites of the silicone surface even without oxidizing plasmas.
- Suitable examples are plasmas of hydrogen or mixtures of hydrogen and Ar ⁇ gon.
- Inert gas plasmas can also be used.
- special plasmas of noble gases such as argon plasma or helium plasma are particularly preferred since they allow an efficient Akti ⁇ vation without undesirable oxidation of electrical contacts, as they may be present in the optoelectronic Vorrich- device.
- silver contacts or other metal contacts that can be even easier than silver oxidizes, thus in particular metals with a ge ⁇ ringeren standard reduction potential than silver, are treated with the ER inventive method without a
- Oxidation occurs.
- the processing of the optoelectronic device according to the invention is substantially facilitated because problems due to oxidized metal contacts such as oxidized silver contacts can be avoided.
- the use of metals that are less noble than gold can be made possible in this way.
- the use of less noble metals leads to a significant cost savings.
- the reac tion ⁇ takes place in the method step C) by means of dip coating or spray coating.
- the inventors have recognized that a reaction by process step C) in the context of a dip or spray coating leads to a reliable film formation and thus to a reduction in the adhesion. At the same time, both methods are suitable for use on an industrial scale. Especially for hard-to-evaporate chemical compounds are to be preferred to dip and spray coating.
- the method according according to the reac ⁇ tion is carried out in method step C) by means of deposition from the gas phase, in particular with ⁇ means of chemical vapor deposition (CVD, "Chemical Vapor Deposition”).
- CVD chemical vapor deposition
- PECVD plasma enhanced chemical vapor deposition
- the deposition from the gas phase is suitable for the deposition in the gas phase without Zerset ⁇ wetting that can be converted chemical compounds and is particularly suitable for the industrial scale. It allows a quick and cost-effective production.
- FIGS. 1A and 1B each show a schematic side view of a preferred embodiment of an optoelectronic device (1) according to the invention.
- the device shown is in each case a light-emitting diode, comprising a radiation-emitting optoelectronic ⁇ African semiconductor (50), which can be contacted via wires (bond wires) (40) to conductive housing components (70) (lead frames).
- the device has a silicone (20), which can form, for example, the encapsulation of the component.
- the silicone can be introduced, for example, as a potting. Also a multistage silicone encapsulation is possible.
- the silicone may also contain fillers such as dyes.
- wel ⁇ leninkonversionsstoffe that allow a conversion of shorter-wave primary radiation in ⁇ a longer wavelength secondary radiation may contain in the silicone as a filler be.
- the silicone can also be free of fillers.
- further components of the optoelectronic device comprise silicone.
- the device may comprise housing components, which may also include silicone.
- the optoelectronic device has at least one outer surface with a silicone (2).
- the Vergusssilikon (20) has a surface on an outer side of the optoelectronic device (2). Shown are an upper surface (2a) and lateral surfaces (2b).
- Devices of the invention are characterized by a layer (30) from said chemical compounds that have an anchor group and a head group on ⁇ , wherein the anchor group is bonded to the silicone outer surface.
- the head group ensures a reduction in the adhesion or stickiness of the outer surface of the optoelectronic device according to the invention.
- the layer (30) may be applied to only one or at least one surface, eg the upper surface (2a). But it is also possible that several surfaces are covered with the layer (30). For example, the upper surface (2a) and one or all soober ⁇ surfaces (2b) with the layer (30) to be covered.
- Figure 1B shows an optoelectronic device in which all the Si ⁇ likonau combined (2) the upper surface (2a) and all of the side surfaces (2b) with the layer adhäsionsvermindernden
- FIG. 2 schematically shows production steps for producing an optoelectronic device (1) according to FIG. 1A.
- Shown are the thus initially not yet singulated unseparated optoelectronic devices, for example comprising radiation-emitting optoelectronic semiconducting ⁇ ter (50) via wires (bonding wires) (40) to conductive housing components (70) (lead frame) contacts be Kgs ⁇ nen ,
- the non-isolated optoelectronic devices may be mounted on a temporary substrate or carrier (60). This may be, for example, a peelable film.
- the silicone material (20) of the optoelectronic devices advantages can be introduced as a casting and has at least ⁇ an outer surface (2).
- the non-isolated optoelectronic devices having a layer (30) can be coated.
- the optoelectronic devices can be separated, ie separated from one another. This can be done for example by a separation from the temporary substrate (60).
- an opto ⁇ electronic device according to Figure 1A is obtained.
- Such optoelectronic devices have silicone outer surfaces on the sides which are not coated. However, since these side surfaces frequently undergo a certain roughening during separation, ie separation of the optoelectronic devices, their tackiness is generally already reduced.
- the method presented here offers the advantage of a lower technical outlay compared to methods in which all side surfaces are coated (see FIG. 3).
- FIG. 3 schematically shows production steps for producing an optoelectronic device (1) according to FIG. 1B.
- the separation ie separation of the optoelectronic devices.
- the bonding of the chemical compounds ie separation of the optoelectronic devices.
- a coating (30) is also shown here by way of example before the singulation or separation of the individual optoelectronic devices.
- FIG. 5 shows on the left a hydroxyl group, as an example of a chemically active surface center, and an example of a chemical compound for attachment to the silicone surface.
- the latter has a silyl anchor group, a CH 2 CH 2 group, as a middle group, and a (CF 2 ) 7 CF 3 group, as a head ⁇ group, on.
- the anchor group reacts with the hydroxy group on the silicone surface.
- the chemical compounds of the optoelectronic device according to the invention may together form a coating or film (30). Due to the directed connection via covalent bonds to the silicone surface by means of chemisorption no multiple ⁇ layering (multilayer) takes place, but it is at most a single coverage so a monolayer achieved. The inventors have recognized that it is for a significant reduction of
- Figures 6A, 6B and 6C show photographs of particle adhesion tests on differently treated silicone outer surfaces.
- Image 6A shows particle adhesion to an untreated, conventional silicone surface.
- the photograph 6B shows the particle adhesion to silicone outer surfaces, according to the present invention, wherein chemical see compounds comprising an anchor group (3) and a head group (4), are anchored to the anchor group to the silicone for the purpose of reducing the adhesion or stickiness. It is therefore on the silicone surfaces of the recordings 6B, a chemical compound according to the invention of the aforementioned type according to the invention.
- the silicone surface was not additionally pretreated before the chemical compounds were attached, that is, they were not subjected to plasma or UV treatment. Nevertheless, compared to recording 6A is already a much lower
- Figure 6C shows a silicone surface according to the invention comprising the same chemical compounds as the silicon surface of pick-up 6B, with the difference that the surface of the silicone was additionally subjected to a pretreatment prior to reaction with the chemical compounds.
- an argon plasma treatment was performed.
- the Sili ⁇ konober Diagram which was further treated with a plasma prior to attachment of the chemical compounds, an even lower number of particles than the surface without plasma treatment (recording 6B).
- the stickiness or particle adhesion is therefore even more reduced with additional pretreatment, which can be explained by the introduction of additional chemically active surface centers, for example hydroxyl groups during the pretreatment, which can act as further points of attachment for the anchor groups of the chemical compounds.
- silicones is thermally curable, addition-two-component silicones ( "2K-silicones") based on dimethyl siloxane.
- the Plasma adaptationszei ⁇ th possibility depending on the type of to be treated surface and plasma vary Plant. in vorlie ⁇ constricting case, a plasma treatment of 10 to 90 seconds proved to be sufficient, and even longer Plasmabehand ⁇ development times are possible. following the Plasmabehand ⁇ development (in this example, within 30 minutes) ER followed by the Coating by immersion in a coating solution The immersion process was about 30 seconds
- An example of a coating solution that is particularly suitable is a solution in this case
- 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane as a chemical compound can act as an anchor group as shown in Figure 5, the tri- chlorosilane while a fluorinated alkyl per ⁇ serves as head group.
- befin ⁇ det an ethylene-agent group.
- an alcoholic solution of said chemical compound may be used, but other common solvents may be used.
- the surface treatment was carried out in the same way but without plasma pretreatment for the silicone surfaces for which particle adhesion tests are shown in Figure 6B. In both cases, following immersion in the coating solution, the sample was heated to about 125 ° C. for 5 minutes. In this step, the chemical compounds are attached to the silicone surface.
- the surfaces were rinsed with isopropanol to remove excess, not bound ⁇ nes material. Thereafter, the samples were dried, which can be done for example in an air stream. During the coating process, make sure that the surface to be coated is completely immersed in the Beschich ⁇ processing solution.
- the invention is not limited by the description with reference to the embodiments. Rather includes the inventions-making any new feature and any combination of features, which in particular includes any combination of features in the patent claims, even if this feature or ⁇ se combination itself is not explicitly specified in the patent claims or exemplary embodiments.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Led Device Packages (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020177026670A KR20170127470A (ko) | 2015-03-06 | 2016-03-03 | 광전자 소자 및 광전자 소자를 제조하기 위한 방법 |
| US15/555,964 US10243110B2 (en) | 2015-03-06 | 2016-03-03 | Optoelectronic device and method for the production of an optoelectronic device |
| JP2017544719A JP2018510506A (ja) | 2015-03-06 | 2016-03-03 | 光電子デバイスおよび光電子デバイスの製造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015103335.6 | 2015-03-06 | ||
| DE102015103335.6A DE102015103335A1 (de) | 2015-03-06 | 2015-03-06 | Optoelektronische Vorrichtung und Verfahren zur Herstellung einer optoelektronischen Vorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016142267A1 true WO2016142267A1 (de) | 2016-09-15 |
Family
ID=55453183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2016/054547 Ceased WO2016142267A1 (de) | 2015-03-06 | 2016-03-03 | Optoelektronische vorrichtung und verfahren zur herstellung einer optoelektronischen vorrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10243110B2 (de) |
| JP (1) | JP2018510506A (de) |
| KR (1) | KR20170127470A (de) |
| DE (1) | DE102015103335A1 (de) |
| WO (1) | WO2016142267A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016113490A1 (de) * | 2016-07-21 | 2018-01-25 | Osram Opto Semiconductors Gmbh | Plättchen für ein optoelektronisches Bauelement, Verfahren zur Herstellung eines optoelektronischen Bauelements und optoelektronisches Bauelement |
| DE102017130528A1 (de) * | 2017-12-19 | 2019-06-19 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement und Verfahren zur Herstellung eines optoelektronischen Bauelements |
| JP2020085835A (ja) * | 2018-11-30 | 2020-06-04 | 日亜化学工業株式会社 | タックの評価方法 |
| CA3126152A1 (en) | 2019-01-14 | 2020-07-23 | Glisten Llc | Molecular coatings and methods of making and using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100220396A1 (en) * | 2007-09-04 | 2010-09-02 | Gertrud Kraeuter | Optical Device, Method of Producing the Device and Optoelectronic Component Comprising the Device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539061A (en) * | 1983-09-07 | 1985-09-03 | Yeda Research And Development Co., Ltd. | Process for the production of built-up films by the stepwise adsorption of individual monolayers |
| DE10328811B4 (de) * | 2003-06-20 | 2005-12-29 | Infineon Technologies Ag | Verbindung zur Bildung einer selbstorganisierenden Monolage, Schichtstruktur, Halbleiterbauelement mit einer Schichtstruktur und Verfahren zur Herstellung einer Schichtstruktur |
| JP4872296B2 (ja) * | 2005-09-30 | 2012-02-08 | 日亜化学工業株式会社 | シリコーンゴム封止型発光装置、及び該発光装置の製造方法 |
| JP4684835B2 (ja) * | 2005-09-30 | 2011-05-18 | 信越化学工業株式会社 | シリコーンゴム硬化物の表面タック性を低減する方法、半導体封止用液状シリコーンゴム組成物、シリコーンゴム封止型半導体装置、及び該半導体装置の製造方法 |
| DE102008006374B4 (de) * | 2007-09-27 | 2018-12-06 | Osram Oled Gmbh | Elektrisches organisches Bauelement und Verfahren zu seiner Herstellung |
| US8017246B2 (en) * | 2007-11-08 | 2011-09-13 | Philips Lumileds Lighting Company, Llc | Silicone resin for protecting a light transmitting surface of an optoelectronic device |
| CN101640240A (zh) * | 2008-07-28 | 2010-02-03 | 富准精密工业(深圳)有限公司 | 发光二极管制造方法 |
| DE102009012163A1 (de) * | 2009-03-06 | 2010-09-09 | Siemens Aktiengesellschaft | Monolagen organischer Verbindungen auf Metalloxidoberflächen oder oxidhaltigen Metalloberflächen und damit hergestelltes Bauelement auf Basis organischer Elektronik |
| JP2010245477A (ja) * | 2009-04-10 | 2010-10-28 | Dow Corning Toray Co Ltd | 光デバイス及びその製造方法 |
| CN103509422B (zh) * | 2012-06-29 | 2018-07-31 | 3M创新有限公司 | 一种疏水和疏油的涂层组合物 |
-
2015
- 2015-03-06 DE DE102015103335.6A patent/DE102015103335A1/de not_active Withdrawn
-
2016
- 2016-03-03 KR KR1020177026670A patent/KR20170127470A/ko not_active Ceased
- 2016-03-03 WO PCT/EP2016/054547 patent/WO2016142267A1/de not_active Ceased
- 2016-03-03 JP JP2017544719A patent/JP2018510506A/ja active Pending
- 2016-03-03 US US15/555,964 patent/US10243110B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100220396A1 (en) * | 2007-09-04 | 2010-09-02 | Gertrud Kraeuter | Optical Device, Method of Producing the Device and Optoelectronic Component Comprising the Device |
Non-Patent Citations (1)
| Title |
|---|
| M J OWEN: "A review of significant directions in fluorosiloxane coatings A review of significant directions in nuorosiloxane coatings", SURFACE COATINGS INTERNATIONAL PART B: COATINGS TRANSACTIONS, 1 June 2004 (2004-06-01), pages 71 - 148, XP055262898, Retrieved from the Internet <URL:http://rd.springer.com/content/pdf/10.1007/BF02699599.pdf> [retrieved on 20160405] * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180069156A1 (en) | 2018-03-08 |
| KR20170127470A (ko) | 2017-11-21 |
| US10243110B2 (en) | 2019-03-26 |
| DE102015103335A1 (de) | 2016-09-08 |
| JP2018510506A (ja) | 2018-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016142267A1 (de) | Optoelektronische vorrichtung und verfahren zur herstellung einer optoelektronischen vorrichtung | |
| EP1800353B1 (de) | Verfahren zum Herstellen von Lumineszenzdiodenchips | |
| DE19945935B4 (de) | Verfahren zur Herstellung eines oberflächenmodifizierten Schichtsystems | |
| DE69216692T2 (de) | Kondensator und Verfahren zu seiner Herstellung | |
| DE4005472A1 (de) | Verfahren zur Bildung eines keramischen oder keramikartigen Überzugs | |
| DE102012108704A1 (de) | Verfahren zur Fixierung einer matrixfreien elektrophoretisch abgeschiedenen Schicht auf einem Halbleiterchip und strahlungsemittierendes Halbleiterbauelement | |
| WO2018015441A1 (de) | Plättchen für ein optoelektronisches bauelement, verfahren zur herstellung eines optoelektronischen bauelements und optoelektronisches bauelement | |
| WO2006034682A1 (de) | Halbleiterbauteil mit in kunststoffgehäusemasse eingebetteten halbleiterbauteilkomponenten | |
| WO2016193098A1 (de) | Optoelektronisches bauelement und verfahren zur herstellung eines optoelektronischen bauelements | |
| EP2323776B1 (de) | Vollständig vernetzte chemisch strukturierte monoschichten | |
| WO1999008317A1 (de) | Integrierte elektrische schaltung mit passivierungsschicht | |
| DE112012006689T5 (de) | Verfahren zur Verkapselung eines optoelektronischen Bauelements und Leuchtdioden-Chip | |
| EP0911088A2 (de) | Verfahren zur Beschichtung von Oberflächen | |
| DE60123921T2 (de) | Verfahren zur Herstellung von ultrafeinen Metallchalkogenidteilchen | |
| DE102007004844B4 (de) | Verfahren zur Herstellung eines Bauteils und Bauteil | |
| DE69430318T2 (de) | Verfahren zur selektiven Metallisierung | |
| EP1336197A1 (de) | Verfahren zum schutz elektronischer oder mikromechanischer bauteile | |
| KR100760285B1 (ko) | 은 나노입자를 고체 표면에 코팅하는 방법 | |
| WO2018041657A1 (de) | Elektrisch leitfähiges kontaktelement für ein optoelektronisches bauelement, optoelektronisches bauelement und verfahren zur herstellung eines optoelektronischen bauelements | |
| EP3601154B1 (de) | Verfahren zur herstellung eines wenigstens teilweise gehäusten halbleiterwafers | |
| DE10236150A1 (de) | Verfahren zur Herstellung wenigstens einer kleinen Öffnung in einer Schicht auf einem Substrat und damit hergestellte Bauelemente | |
| DE19747816A1 (de) | Nanostrukturierung von Oberflächen | |
| DE102018101710A1 (de) | Optoelektronisches bauelement und verfahren zur herstellung eines optoelektronischen bauelements | |
| DE102017130528A1 (de) | Optoelektronisches Bauelement und Verfahren zur Herstellung eines optoelektronischen Bauelements | |
| DE102004020173B4 (de) | Mikrostrukturiertes Bauelement und ein Verfahren zum Herstellen eines mikrostrukturierten Bauelements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16707783 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2017544719 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 15555964 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 20177026670 Country of ref document: KR Kind code of ref document: A |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 16707783 Country of ref document: EP Kind code of ref document: A1 |



