WO2007037093A1 - 反射材及び発光ダイオード用反射体 - Google Patents
反射材及び発光ダイオード用反射体 Download PDFInfo
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- WO2007037093A1 WO2007037093A1 PCT/JP2006/317317 JP2006317317W WO2007037093A1 WO 2007037093 A1 WO2007037093 A1 WO 2007037093A1 JP 2006317317 W JP2006317317 W JP 2006317317W WO 2007037093 A1 WO2007037093 A1 WO 2007037093A1
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- compound
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- reflective material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
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- 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
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
- H01L2224/45099—Material
- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/45144—Gold (Au) as principal constituent
-
- 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
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- 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
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/85—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a wire connector
- H01L2224/8538—Bonding interfaces outside the semiconductor or solid-state body
- H01L2224/85385—Shape, e.g. interlocking features
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—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
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L24/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12041—LED
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
Definitions
- the present invention relates to a reflector and a reflector for a light emitting diode.
- LEDs light-emitting diodes
- white LEDs are expected as next-generation light sources to replace conventional white light bulbs, halogen lamps, HID lamps, and so on.
- LEDs have been evaluated for their features such as long life, power saving, temperature stability, and low-voltage drive, and they are applied to displays, destination display boards, in-vehicle lighting, signal lights, emergency lights, mobile phones, video cameras, and so on.
- Such a light-emitting device is usually manufactured by fixing an LED to a reflector formed by integrally molding a synthetic resin with a lead frame and sealing with a sealing material such as epoxy resin or silicone resin.
- the LED reflector material In order to efficiently take out light emitted from the LED, the LED reflector material needs to have a high light reflectivity. In recent years, LEDs that emit ultraviolet light have come to be used, and there is a demand for those having high reflectivity for ultraviolet light. Also, it may be exposed to high temperatures, such as a sealing process or a soldering process. For this reason, it is required that the reflectance does not decrease even when exposed to high temperatures.
- a resin composition obtained by adding acid-titanium to a polyamide-based resin (for example, Patent Document 1) is often used as a LED reflector.
- This material has a high reflectance in the visible light region.
- titanium dioxide absorbs ultraviolet light having a wavelength of 400 nm or less
- the material containing titanium dioxide hardly reflects ultraviolet light having a wavelength of 400 nm or less.
- potassium titanate fibers were used instead of acid titanium (Patent Document 2), the reflection characteristics against ultraviolet rays were not enough to improve (the reflectance was about 30% at 350 nm).
- Patent Document 3 discloses a technique of providing a resin layer containing a light-reflective filler around a light-emitting element when manufacturing an LED lamp.
- a light reflective filler a compound containing titanium and oxygen such as titanium oxide and potassium titanate is disclosed.
- these fillers have the property of absorbing ultraviolet rays, they are still purple. The reflectivity for external lines was very low.
- Patent Document 4 discloses a light reflecting film in which a surface layer containing hollow particles is laminated on a polyester resin sheet containing bubbles. This film has a high reflectivity, and it has been shown that the brightness is improved when it is incorporated into a liquid crystal knocklight, but the UV reflection characteristics are not mentioned.
- polyester is selected based on the fact that there is almost no absorption in the visible light region.
- Patent Document 1 JP-A-2-288274
- Patent Document 2 JP 2002-294070 A
- Patent Document 3 JP 2000-150969 A
- Patent Document 4 Japanese Patent Laid-Open No. 2004-101601
- An object of the present invention is to provide a reflector and an LED reflector having a high reflectivity with respect to ultraviolet rays and a high reflectivity even after heat treatment.
- the following reflector and LED reflector are provided.
- thermopolymerizable compound is a compound having one or more kinds selected from an acrylic compound, an epoxy compound, and a silicone compound.
- a polymer having a visible light reflectance at a wavelength of 550 nm of 80% or more, and a polymer made from the composition containing (a) and (b) as a raw material is laminated on the substrate! / Reflector according to any one of 1 to 5
- the substrate is a metal selected from the group consisting of aluminum, gold, silver, copper, nickel, and palladium, and one or more selected
- a light-emitting diode reflector having the reflective material according to any one of 1 to 8 on at least a reflective surface.
- FIG. 1 is a graph showing the reflectance of a reflector obtained in Example 2.
- FIG. 2 is a view showing a reflector for LED produced in Example 9, wherein (a) is a cross-sectional view of a molded product obtained by injection molding of a resin composition containing a solid particulate white pigment.
- FIGS. 4A and 4B are cross-sectional views when an LED is attached to the molded body of FIG. 5A and a polymerizable compound containing hollow particles is applied and polymerized inside the molded body, and
- FIG. FIG. 3 is a cross-sectional view when a sealant is added to the resin and cured.
- the reflective material of the present invention comprises a polymer made from a composition containing a heat or photopolymerizable compound and hollow particles as a raw material.
- the thermal or photopolymerizable compound may be one kind or a mixture of two or more kinds.
- the photopolymerizable compound preferably has an ultraviolet transmittance of 50% or more, more preferably 60% to 100%, for light having a wavelength of 350 nm when the thickness is 250 m.
- the ultraviolet transmittance is a value measured for rosin polymerized by heat or light.
- a thermal or photopolymerizable compound having an ultraviolet transmittance at a wavelength of 350 nm at a thickness of 250 ⁇ m of 50% or more includes acrylic compounds, epoxy compounds, silicone compounds, styrene compounds , Phenolic compounds, unsaturated polyester compounds, and the like, which may include one or more of these.
- the heat or photopolymerizable compound refers to a compound that is polymerized by heat or light.
- a compound may be any of a monomer, an oligomer, or a resin. Oligomer resin is further polymerized by the action of heat and light.
- acrylic compounds, epoxy compounds, and silicone compounds that give high heat-resistant polymers are preferred.
- acrylic compounds and silicone compounds are preferred.
- an alicyclic hydrocarbon group-containing (meth) acrylic acid ester compound having 7 or more carbon atoms is preferred because it gives a polymer having a high glass transition point and excellent light resistance.
- Examples of the alicyclic hydrocarbon group having 7 or more carbon atoms include an adamantyl group, a norbornyl group, a dicyclopentanyl group, and the like.
- the thermal or photopolymerizable ricin compound may be liquid or solid before polymerization, but is more preferable because the liquid is easier to handle at room temperature.
- a polymer (silicone resin) obtained from a silicone compound has a low glass transition point but is excellent in flexibility.
- the silicone-based resin can relieve the thermal stress generated during the manufacture and use of the LED lamp, and can cause peeling between the sealant and the lead frame.
- Silicone-based resin is also excellent in light resistance. The above is the reason why silicone compounds are preferred.
- the content of the heat or photopolymerizable compound is 95 to 30% by mass, preferably 90 to 50% by weight, based on the composition comprising the heat or photopolymerizable compound and the hollow particles.
- the hollow particles also have a material strength with an ultraviolet transmittance of 50% or more for light having a wavelength of 350 nm when the thickness is 250 ⁇ m. More preferably, it is 60% to 100%. Since the ultraviolet light that has passed through the outer shell of the hollow particles is reflected by the hollow portion, a material having a high ultraviolet transmittance is required.
- the difference in refractive index between the part constituting the hollow particle and the gas existing inside the hollow particle is large.
- the gas present inside the hollow particles is usually air, but may be an inert gas such as nitrogen or argon, and may be a vacuum.
- the hollow particles are preferably particles containing one or more closed cells inside the particles, but may be secondary particles in which a hollow portion is formed.
- the component constituting the hollow particles may be organic or inorganic.
- the ultraviolet light reaching the hollow particles is reduced and the reflectivity at the hollow portion is reduced, and therefore, those that do not absorb much ultraviolet light are preferable.
- the hollow portion may be destroyed by heat treatment. Since the reflection characteristics are lost when the hollow portion disappears, a material having high heat resistance is preferable.
- metal oxides such as glass beads, silica and alumina, and metal salts such as calcium carbonate, barium carbonate, calcium silicate and nickel carbonate can be suitably used.
- organic material styrene-based resin, acrylic-based resin, and cross-linked products thereof can be suitably used, and one or more of these may be included.
- glass beads, silica, crosslinked acrylic resin, and crosslinked styrene resin are preferred.
- the outer diameter of the hollow particles is not particularly limited. From the viewpoint of light reflectivity and handleability 0.01-500
- / z m force is preferable, 0.1 to: More preferable than LOO / z m force. From 0.01 m / J, otherwise, the viscosity of the composition containing the heat or photopolymerizable compound and the hollow particles is increased before polymerization, which may make it difficult to form. If it is larger than 500 / z m, the surface of the reflector will be rough, and the reflectivity may decrease.
- the inner diameter of the hollow particles is not particularly limited. From the viewpoint of light reflectivity, 0.001 to 100 111 is preferable, and 0.1 to 50 / ⁇ ⁇ is more preferable. Outside this range, the reflection efficiency may deteriorate. [0021]
- the content of the hollow particles is 5 to 70% by mass, preferably 10 to 50% by weight, based on the composition containing heat or a polymerizable compound and the hollow particles. If it is less than 5% by weight, the reflectivity may decrease. If it exceeds 70% by weight, the viscosity of the composition containing the heat or photopolymerizable compound and the hollow particles becomes high, and the shaping is performed. There is a risk of becoming.
- the polymer used in the reflective material of the present invention may contain a thermoplastic resin to improve heat resistance.
- the thermoplastic resin preferably has a glass transition temperature of 120 ° C or higher, which is highly transparent. If the glass transition temperature is lower than 120 ° C, the heat resistance improvement effect may be reduced.
- the thermoplastic resin is used in a composition before polymerization.
- thermoplastic resins examples include acrylic resins, styrene resins, polycarbonates, polyaryl esters, polyether sulfones, epoxy acrylates, olefin maleimide copolymers, ZEONEX.
- ZEONEX manufactured by Nippon Zeon Co., Ltd., cycloolefin polymer
- Zeonor manufactured by Nippon Zeon Co., Ltd., cycloolefin polymer
- Arton manufactured by JSR Co., Ltd., cycloolefin polymer
- Topas T OPAS, manufactured by Ticona, cycloolefin polymer
- transparent ABS transparent propylene, methacryl styrene resin, polyarylate, polysulfone, transparent nylon, transparent polybutylene terephthalate, transparent fluoro resin, poly 4-methylpentene 1 And transparent phenoxy resin.
- the addition amount is preferably 0.5 to 20% by mass in the reflector of the present invention. If the amount is less than 5% by mass, the effect of improving heat resistance cannot be obtained. If the amount is more than 20% by mass, the fluidity of the composition before polymerization tends to be inferior.
- antioxidants include phenolic antioxidants, phosphorus antioxidants, phenolic antioxidants, rataton antioxidants, and amine amine antioxidants.
- the amount of these antioxidants to be used is generally 0.005-5 parts by mass, preferably 0.02-2 parts by mass with respect to 100 parts by mass of the total amount of the polymer. Two or more of these additives may be combined.
- a hindered amine light stabilizer can be preferably used as the light stabilizer.
- the addition amount of the light stabilizer is usually 0.005 to 5 parts by mass, preferably 0.02 to 2 parts by mass with respect to 100 parts by mass of the total amount of the polymer. Two or more of these additives may be combined.
- the thickness of the polymer layer is preferably 0.05 to 2 mm, more preferably 0.25 to 2 mm.
- the reflective material of the present invention not only has an extremely high reflectivity with respect to ultraviolet rays, but also maintains a high reflectivity even after undergoing a heat treatment when manufacturing a light-emitting device. For example, even after severe heat treatment such as a sealing process (100 to 200 ° C for several hours) and a solder reflow process (260 ° C for several seconds), a reflectance of 50% or more is maintained for light with a wavelength of 350 nm. It is possible.
- the above polymer is preferably used in a state where the polymer is laminated on a substrate made of a material having a high reflectance to visible light.
- a material having a high reflectance to visible light means a material having a visible light reflectance at a wavelength of 550 nm of 80% or more.
- a base material is a rosin composition containing a solid-particle white pigment.
- a substrate made of a resin composition containing a solid-particle white pigment such as titanium oxide has a low ultraviolet reflectivity and a very high visible light reflectivity.
- solid particle white pigment examples include titanium oxide, silica, potassium titanate, barium sulfate, alumina, zinc oxide, calcium carbonate, talc, and my strength.
- the content of the solid particle white pigment is not particularly limited, but is preferably 1 to 50% by weight, more preferably 5 to 40% by weight with respect to the resin composition containing the solid particle white pigment. .
- Examples of the resin containing solid particle-based white pigment include polyamide-based resin and liquid crystal polymer Polyether-based resin, syndiotactic polystyrene, polyester-based resin, and the like.
- the content of the resin containing the solid particle-based white pigment is not particularly limited, but 40 to 95% by weight is preferable with respect to the resin composition containing the solid particle-based white pigment 50 to 90% by weight. % Power is preferable.
- the resin composition containing the solid particle-based white pigment can contain glass fiber and the like.
- a metal having one or more kinds selected from the group consisting of aluminum, gold, silver, copper, nickel, and palladium Even with such a metallic substrate, it is possible to obtain a high reflectance with ultraviolet rays and visible light.
- the shape of the substrate is not necessarily flat and may be any shape.
- the present invention When the present invention is applied to an LED reflector, for example, the one formed into a concave shape as shown in FIG. 2 (a) is used.
- the thickness of the polymer layer made of a composition containing a heat or photopolymerizable ricin compound and hollow particles varies depending on the location (see 24 in FIG. 2 (b)).
- the maximum thickness of this layer is 0.05 to 3 mm, more preferably 0.25 to 2 mm.
- the reflective material of the present invention can be produced by mixing hollow particles with a heat or photopolymerizable compound and then polymerizing with heat or light. Further, a polymerization initiator may be added to accelerate the polymerization reaction.
- the polymerization initiator is not particularly limited.
- a radical polymerization initiator can be used.
- radical polymerization initiators include ketone peroxides such as methyl ethyl ketone peroxide, methyl isobutyl ketone peroxide, acetyl ethyl acetone peroxide, cyclohexanone peroxide, and methylcyclohexanone peroxide.
- the amount used for the radical polymerization initiator is usually 0.01 to 5 parts by mass, preferably 0.05 to 0.5 parts by mass with respect to 100 parts by mass of the total amount of the heat or photopolymerizable compound. is there.
- the above radical polymerization initiators may be used alone or in combination.
- the reflective material of the present invention can be suitably used for a reflector for LED, but can also be applied to other reflective material applications. It is particularly suitable for applications that require ultraviolet reflectivity and applications that require heat stability.
- the reflector for LED of the present invention is a composition comprising a heat or photopolymerizable compound and hollow particles
- the polymer layer which uses as a raw material has at least a reflective surface.
- the polymer is preferably used in a state of being laminated on a molded body (substrate) made of a resin composition containing a solid particle-based white pigment.
- the polymer is preferably used in a state of being laminated on a molded body (substrate) having a specific metal strength.
- thermoplastic rosin and the like used in Examples and Comparative Examples are shown below.
- Epicoat 828 Japan Epoxy Resin Co., Ltd.
- UV transmittance of polymer 90% (wavelength 350 °, thickness 250 ⁇ m)
- Hollow glass beads HSC—110C (Potters Valloty Co., Ltd., average particle size 13 ⁇ m, average pore size 9 / ⁇ ⁇ , (UV transmittance of glass 90% (wavelength 350 nm, thickness 250 m))
- Crosslinked acrylic Hollow particles XX06BZ (Sekisui Plastics Co., Ltd., average particle size 5; ⁇ ⁇ , average pore size 12 m, (UV transmittance of crosslinked acrylic 84% (wavelength 350 nm, thickness 250 ⁇ m))
- Silica beads FB201SX (Showa Denko KK, average particle size 7.8 / z m)
- Acid Titanium Typeter R680 (Ishihara Sangyo Co., Ltd., average particle size 0.21 ⁇ ⁇
- Fillers were added to the acrylic compound (a) (liquid) in the proportions shown in Table 1, and irradiated with ultrasonic waves for 15 minutes in an ultrasonic cleaner to fully disperse the fillers.
- 2 g of this filler dispersion was put into an aluminum dish having a diameter of 5 cm and heat-treated at 110 ° C. for 3 hours and 160 ° C. for 1 hour to thermally polymerize the acrylic compound (a). After the polymerization, it was peeled off from the aluminum dish to obtain a round plate having a diameter of 5 cm and a thickness of about 1 mm. The round plate was subjected to the following treatment and evaluated.
- Heat treatment was performed under the following two conditions.
- the following i) is a condition that assumes the thermal history that the reflector receives in the sealing process, and ii) that the thermal history that the reflector receives in the solder reflow process.
- irradiation was performed for 100 hours at an output of 500 W / m 2 .
- the initial reflectance, the reflectance after heat treatment, and the reflectance after ultraviolet irradiation were measured by the following methods. Made by Shimadzu Corporation 'Self-recording spectrophotometer UV-2400PC' Made by Shimadzu Corporation Multi A large sample chamber unit MPC-2200 was installed, and the reflectance (%) was measured in the wavelength range of 700 to 300 nm. In addition, barium sulfate was used as a reference.
- Figure 1 shows the measurement results of Example 2.
- the reflectivity at 550 nm and 350 nm is shown in Table 2.
- Fillers were added to the epoxy compound (liquid) in the proportions shown in Table 1, and irradiated with ultrasonic waves for 15 minutes in an ultrasonic cleaner to fully disperse the fillers.
- 2 g of the filler dispersion was put into an aluminum dish having a diameter of 5 cm, heat-treated at 130 ° C. for 3 hours, and the epoxy compound was thermally polymerized to obtain a round plate having a diameter of 5 cm and a thickness of about 1 mm.
- a heat treatment or the like was performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after the ultraviolet irradiation was measured. Further, the glass transition point was measured by the method described above. The results are shown in Table 2.
- Fillers were added to the silicone compound (a) (liquid) in the proportions shown in Table 1 and irradiated with ultrasonic waves for 15 minutes in an ultrasonic cleaner to sufficiently disperse the fillers.
- 2 g of the filler dispersion was put into an aluminum dish having a diameter of 5 cm, heat-treated at 160 ° C. for 3 hours, and the silicone compound (a) was thermally polymerized to obtain a round plate having a diameter of 5 cm and a thickness of about 1 mm.
- a heat treatment or the like was performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after the ultraviolet irradiation was measured. The results are shown in Table 2.
- Example 2 A filler dispersion in which the hollow glass beads used in Example 2 were dispersed in the acrylic compound (a) on the square plate obtained in Comparative Example 4 (visible light reflectivity of 90.6% at 550 nm) was obtained. lg was applied and thermally polymerized under conditions of 110 ° C for 3 hours and 160 ° C for 1 hour. The heat treatment and the like were performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after ultraviolet irradiation was measured. The results are shown in Table 2.
- Example 1 of Japanese Patent Application Laid-Open No. 2004-101601 a light reflecting film having a thickness of about 200 ⁇ m was produced.
- the main extruder has an intrinsic viscosity of 0.63 dlZg, a polyethylene terephthalate (hereinafter referred to as PET) with a melting point of 256 ° C, 89% by weight, a polymethylpentene with a melting point of 235 ° C, 10% by weight, and a molecular weight of 4,000 polyethylene.
- PET polyethylene terephthalate
- Pellets mixed with 1% by weight of glycol are supplied, and pellets mixed with 85% by weight of PET and 15% by weight of calcium carbonate particles with an average particle size of 1.5 m are supplied to another sub-extrusion machine.
- a three-layer laminated sheet was produced by melt extrusion so that the components supplied to the sub-extruder were laminated on the surface layers on both sides of the resin layer extruded from the machine, and cooling on a mirror-surface cast drum by electrostatic application method. .
- the laminated sheet was stretched 3.3 times in the longitudinal direction at a temperature of 90 ° C, and then stretched 3.5 times in the width direction at 120 ° C through a preheating zone of 110 ° C with a tenter.
- the film was further heat treated at 220 ° C for 30 seconds to obtain a stretch heat-treated sheet.
- the following coating material was applied to one side of the sheet so that the average thickness after drying was 10 m, and dried at 120 ° C.
- Emulsion solution solids concentration 33%) 1 part (parts by weight, the same shall apply hereinafter)
- a water-based binder pigment solution solid content concentration: 50%
- Nipol LX407BP manufactured by Nippon Zeon Co., Ltd.
- the obtained light reflecting film had a flat bubble content of 92.8% and a hollow particle area occupation ratio of 60.9%.
- this film has flat bubbles, but the reflectors of the examples do not have flat bubbles.
- the obtained film was subjected to heat treatment and the like in the same manner as in Example 1, and the reflectance after the initial heat treatment and after ultraviolet irradiation was measured. The results are shown in Table 2.
- the electronic component (LED reflector) shown in Fig. 2c was fabricated.
- the resin composition 10 used in Comparative Example 4 was injection molded (barrel temperature 330 ° C., mold temperature 120 ° C.) to produce an integrally molded product with the lead frame 12 as shown in FIG. 2a.
- Light-emitting element 20 (manufactured by Nichia Corporation, NCCU033) is mounted on this molded product, and after bonding gold wire 22, the hollow glass beads used in Example 2 are made acrylic based on the inside of the injection molded product.
- the filler dispersion liquid 24 dispersed in the compound (a) was applied (see FIG. 2b), and thermal polymerization was performed under conditions of 110 ° C. for 3 hours and 160 ° C. for 1 hour. At this time, the maximum thickness of the thermal polymer 24 was about 0.7 mm.
- an acrylic compound (a) as a sealant 30 was placed in the concave portion of the molded article and polymerized under conditions of 110 ° C. for 3 hours and 160 ° C. for 1 hour (see FIG. 2c).
- the electronic parts thus obtained were energized and the brightness was examined visually.
- the evaluation is as follows.
- Table 3 shows the evaluation results.
- the electronic component was sealed in the same manner as in Example 9 except that the silicone compound (a) was used instead of the acrylic compound (a) as the sealant and was thermally polymerized at 160 ° C for 3 hours. Obtained. The brightness was visually checked after energization. Table 3 shows the evaluation results.
- Example 2 The hollow glass beads used in Example 2 were coated with the acid-titanium-dispersed acrylic compound (a) used in Comparative Example 2 instead of the filler monodispersed liquid in which the acrylic compound (a) was dispersed. Otherwise, an electronic component was obtained in the same manner as in Example 9. The electronic parts thus obtained were energized, and the luminance was examined visually. Table 3 shows the evaluation results.
- Fillers were added to the acrylic compound (b) in the proportions shown in Table 4 and irradiated with ultrasonic waves for 15 minutes in an ultrasonic cleaner to sufficiently disperse the fillers. 2 g of this filler dispersion was put into an aluminum dish having a diameter of 5 cm and heat treated at 110 ° C. for 3 hours and 160 ° C. for 1 hour to thermally polymerize the acrylic compound (b). As a result, a round plate having a diameter of 5 cm and a thickness of 1 mm was obtained.
- Example 5 A heat treatment or the like was performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after the ultraviolet irradiation was measured. Further, the glass transition point was measured by the method described above. The results are shown in Table 5.
- Fillers were added to the acrylic compound (c) in the proportions shown in Table 4, and were irradiated with ultrasonic waves for 15 minutes in an ultrasonic cleaner to sufficiently disperse the fillers. 2 g of this filler dispersion was put into an aluminum dish having a diameter of 5 cm and heat-treated at 110 ° C. for 3 hours and 160 ° C. for 1 hour to thermally polymerize the acrylic compound (c). As a result, a round plate having a diameter of 5 cm and a thickness of 1 mm was obtained.
- Example 5 A heat treatment or the like was performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after the ultraviolet irradiation was measured. Further, the glass transition point was measured by the method described above. The results are shown in Table 5.
- Fillers were added to the silicone compound (b) in the proportions shown in Table 4, and the filler was sufficiently dispersed by irradiating with ultrasonic waves in an ultrasonic cleaner for 15 minutes. 2 g of this filler dispersion was put into an aluminum dish having a diameter of 5 cm and heat-treated at 70 ° C for 1 hour and at 150 ° C for 5 hours to thermally polymerize the silicone compound (b). As a result, a round plate having a diameter of 5 cm and a thickness of 1 mm was obtained.
- Example 5 A heat treatment or the like was performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after the ultraviolet irradiation was measured. Further, the glass transition point was measured by the method described above. The results are shown in Table 5.
- Example 3 0.7 g of the filler dispersion prepared in Example 3 was put into an aluminum dish having a diameter of 5 cm, and 110 ° C 3 Heat treatment was performed for 1 hour at 160 ° C. to obtain a round plate polymer having a diameter of 5 cm and a thickness of 0.3 mm. A heat treatment or the like was performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after the ultraviolet irradiation was measured. Further, the glass transition point was measured by the method described above. The results are shown in Table 5.
- Example 3 0.25 g of the filler dispersion prepared in Example 3 was put into an aluminum dish having a diameter of 5 cm, and heat treated at 110 ° C. for 3 hours and 160 ° C. for 1 hour to obtain a round plate polymer having a diameter of 5 cm and a thickness of 0.1 mm. It was. A heat treatment or the like was performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after the ultraviolet irradiation was measured. Further, the glass transition point was measured by the method described above. The results are shown in Table 5.
- the filler dispersion lg prepared in Example 3 was applied on a 3 cm square 1 mm thick aluminum plate having a silver-plated surface, and was thermally polymerized under conditions of 110 ° C. for 3 hours and 160 ° C. for 1 hour. After the polymerization, the polymerization layer was evaluated without peeling off from the aluminum plate.
- Example 5 A heat treatment or the like was performed in the same manner as in Example 1, and the reflectance after the initial heat treatment and after the ultraviolet irradiation was measured. The results are shown in Table 5. The light reflectance of silver at a wavelength of 550 nm is 98%.
- Example 1 Example 1 2 Example 1 3 Example 1 4 Example 1 5 Example 1 6
- the reflective material of the present invention can be used for lamp reflectors for liquid crystal displays, reflectors for showcases, reflectors for illumination, LED reflectors, and the like.
- LED reflectors can be used in various office automation equipment, electrical and electronic equipment and parts, automobile parts, such as displays, destination display boards, in-vehicle lighting, signal lights, emergency lights, mobile phones, and video cameras.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2007537560A JPWO2007037093A1 (ja) | 2005-09-29 | 2006-09-01 | 反射材及び発光ダイオード用反射体 |
DE112006002540T DE112006002540T5 (de) | 2005-09-29 | 2006-09-01 | Reflektierendes Material und Reflektor für lichtemittierende Diode |
US12/066,884 US20090268279A1 (en) | 2005-09-29 | 2006-09-01 | Reflective material and reflector for light-emitting diode |
Applications Claiming Priority (4)
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JP2005284068 | 2005-09-29 | ||
JP2005-284068 | 2005-09-29 | ||
JP2006159359 | 2006-06-08 | ||
JP2006-159359 | 2006-06-08 |
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WO2007037093A1 true WO2007037093A1 (ja) | 2007-04-05 |
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PCT/JP2006/317317 WO2007037093A1 (ja) | 2005-09-29 | 2006-09-01 | 反射材及び発光ダイオード用反射体 |
Country Status (6)
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US (1) | US20090268279A1 (ja) |
JP (1) | JPWO2007037093A1 (ja) |
KR (1) | KR20080063231A (ja) |
DE (1) | DE112006002540T5 (ja) |
TW (1) | TW200719496A (ja) |
WO (1) | WO2007037093A1 (ja) |
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JP2008243892A (ja) * | 2007-03-26 | 2008-10-09 | Idemitsu Kosan Co Ltd | 光半導体用反射材 |
JP2011171345A (ja) * | 2010-02-16 | 2011-09-01 | Stanley Electric Co Ltd | 発光装置及びその製造方法 |
JP2011228411A (ja) * | 2010-04-19 | 2011-11-10 | Panasonic Corp | 光半導体装置 |
JP2012077235A (ja) * | 2010-10-05 | 2012-04-19 | Nitto Denko Corp | 光半導体装置用エポキシ樹脂組成物およびそれを用いて得られる光半導体装置用リードフレーム、ならびに光半導体装置 |
JP2012180432A (ja) * | 2011-02-28 | 2012-09-20 | Dainippon Printing Co Ltd | リフレクター用樹脂組成物、リフレクター用樹脂フレーム、リフレクター、及び半導体発光装置 |
JP2013197545A (ja) * | 2012-03-22 | 2013-09-30 | Dainippon Printing Co Ltd | 半導体発光装置、半導体発光装置用部品、半導体発光装置用反射体、半導体発光装置用反射体組成物、半導体発光装置用反射体の製造方法 |
JP2013232532A (ja) * | 2012-04-27 | 2013-11-14 | Dainippon Printing Co Ltd | 光反射積層体及び半導体発光装置 |
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JP2014011029A (ja) * | 2012-06-29 | 2014-01-20 | Toshiba Lighting & Technology Corp | 照明装置 |
TWI634145B (zh) * | 2012-01-17 | 2018-09-01 | 大日本印刷股份有限公司 | 電子線硬化性樹脂組成物、反射體用樹脂框架、反射體、半導體發光裝置及成形體之製造方法 |
JP5843016B2 (ja) * | 2012-07-27 | 2016-01-13 | コニカミノルタ株式会社 | Led装置及びその製造方法 |
JP6155928B2 (ja) * | 2013-07-17 | 2017-07-05 | 大日本印刷株式会社 | 半導体発光装置の製造方法、半導体発光装置用部品の製造方法、反射体の製造方法及び反射体形成用組成物 |
DE102021132495A1 (de) * | 2021-12-09 | 2023-06-15 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Optoelektronisches element und verfahren zur herstellung eines optoelektronischen elements |
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- 2006-09-01 WO PCT/JP2006/317317 patent/WO2007037093A1/ja active Application Filing
- 2006-09-01 KR KR1020077028743A patent/KR20080063231A/ko not_active Application Discontinuation
- 2006-09-01 JP JP2007537560A patent/JPWO2007037093A1/ja active Pending
- 2006-09-01 DE DE112006002540T patent/DE112006002540T5/de not_active Withdrawn
- 2006-09-29 TW TW095136309A patent/TW200719496A/zh unknown
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JPH0963329A (ja) * | 1995-08-30 | 1997-03-07 | Minnesota Mining & Mfg Co <3M> | 液晶バックライト用反射シート |
JP2003195020A (ja) * | 2001-12-26 | 2003-07-09 | Otsuka Chemical Holdings Co Ltd | 紫外線発生源用反射板材料 |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008243892A (ja) * | 2007-03-26 | 2008-10-09 | Idemitsu Kosan Co Ltd | 光半導体用反射材 |
JP2011171345A (ja) * | 2010-02-16 | 2011-09-01 | Stanley Electric Co Ltd | 発光装置及びその製造方法 |
JP2011228411A (ja) * | 2010-04-19 | 2011-11-10 | Panasonic Corp | 光半導体装置 |
JP2012077235A (ja) * | 2010-10-05 | 2012-04-19 | Nitto Denko Corp | 光半導体装置用エポキシ樹脂組成物およびそれを用いて得られる光半導体装置用リードフレーム、ならびに光半導体装置 |
JP2012180432A (ja) * | 2011-02-28 | 2012-09-20 | Dainippon Printing Co Ltd | リフレクター用樹脂組成物、リフレクター用樹脂フレーム、リフレクター、及び半導体発光装置 |
JP2013197545A (ja) * | 2012-03-22 | 2013-09-30 | Dainippon Printing Co Ltd | 半導体発光装置、半導体発光装置用部品、半導体発光装置用反射体、半導体発光装置用反射体組成物、半導体発光装置用反射体の製造方法 |
JP2013232532A (ja) * | 2012-04-27 | 2013-11-14 | Dainippon Printing Co Ltd | 光反射積層体及び半導体発光装置 |
JP2015089922A (ja) * | 2013-11-06 | 2015-05-11 | 出光興産株式会社 | 反射材用組成物及びこれを用いた光半導体発光装置 |
CN108864673A (zh) * | 2017-05-11 | 2018-11-23 | 江南大学 | 一种高透明紫外阻隔聚合物组合物及其制备方法和应用 |
WO2021038771A1 (ja) * | 2019-08-28 | 2021-03-04 | 昭和電工マテリアルズ株式会社 | 光反射用熱硬化性樹脂組成物、光半導体素子搭載用基板及び光半導体装置 |
JPWO2021038771A1 (ja) * | 2019-08-28 | 2021-03-04 |
Also Published As
Publication number | Publication date |
---|---|
TW200719496A (en) | 2007-05-16 |
DE112006002540T5 (de) | 2008-08-21 |
KR20080063231A (ko) | 2008-07-03 |
JPWO2007037093A1 (ja) | 2009-04-02 |
US20090268279A1 (en) | 2009-10-29 |
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