WO2015125564A1 - 光センサ装置 - Google Patents
光センサ装置 Download PDFInfo
- Publication number
- WO2015125564A1 WO2015125564A1 PCT/JP2015/052100 JP2015052100W WO2015125564A1 WO 2015125564 A1 WO2015125564 A1 WO 2015125564A1 JP 2015052100 W JP2015052100 W JP 2015052100W WO 2015125564 A1 WO2015125564 A1 WO 2015125564A1
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- WO
- WIPO (PCT)
- Prior art keywords
- optical sensor
- resin
- sensor device
- glass
- resin sealing
- Prior art date
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Images
Classifications
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
- C03C3/21—Silica-free oxide glass compositions containing phosphorus containing titanium, zirconium, vanadium, tungsten or molybdenum
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- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
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- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
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- H01L31/02—Details
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- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02162—Coatings for devices characterised by at least one potential jump barrier or surface barrier for filtering or shielding light, e.g. multicolour filters for photodetectors
- H01L31/02164—Coatings for devices characterised by at least one potential jump barrier or surface barrier for filtering or shielding light, e.g. multicolour filters for photodetectors for shielding light, e.g. light blocking layers, cold shields for infrared detectors
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- H01L31/02—Details
- H01L31/0232—Optical elements or arrangements associated with the device
- H01L31/02322—Optical elements or arrangements associated with the device comprising luminescent members, e.g. fluorescent sheets upon the device
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- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
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- H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
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- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
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- H01L2224/484—Connecting portions
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- H01L2224/48465—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
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- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
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- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Definitions
- the present invention relates to an optical sensor device using phosphate glass.
- FIG. 14 is an example of a cross-sectional view of a packaged optical sensor.
- An optical sensor element 24 is mounted on an insulating substrate 22 on which a wiring pattern 21 is formed by metallization, and a translucent epoxy resin 29 is molded around the optical sensor element 24 (FIG. 1 of FIG. 1). 2).
- a resin 23 having a composition for cutting infrared light is provided on the flat surface directly above the optical sensor element 24 in a layered manner.
- a light receiving sensor element is used for the optical sensor element 24 to be mounted.
- the wiring pattern 21 by metallization is electrically connected to an electrode provided on the upper surface of the photosensor element 24 by a wire 25 and used as a connection terminal to the outside.
- the electromotive force generated by the light incident on the optical sensor element is transmitted to the external connection terminal via the wire 25.
- Light that enters from the outside directly above the optical sensor element is cut by infrared light by the resin 23 and passes through the translucent epoxy resin, and the optical sensor element is close to human visual sensitivity characteristics. Can be received.
- the package structure described in Patent Document 1 is molded entirely with a transparent light-transmitting resin, and a resin having a composition that cuts infrared light molds the periphery of the optical sensor element. It is provided only directly above the optical sensor element that is a part of the outer surface of the translucent resin. For this reason, infrared light cannot be cut for obliquely incident light or light incident from the lateral direction, and the optical sensor element receives only light having characteristics reflecting the visibility characteristics. I can't. For this reason, it is difficult to obtain sufficient visibility characteristics for light incident from the lateral direction or oblique direction, and it is difficult to obtain desired light receiving characteristics.
- the conventional package has a structure in which the periphery of the optical sensor element is molded only with a translucent epoxy resin. It is known that a translucent epoxy resin is vulnerable to heat, moisture, and ultraviolet rays, and if the resin is decomposed and deteriorated by heat, the resin is also discolored. Since discoloration causes light absorption, the transmittance is lowered, so that light incident from the outside is attenuated, the light intensity received by the photosensor element is also lowered, and the light receiving sensitivity is lowered. Further, the resin becomes brittle by being continuously exposed to heat, and peeling and cracking are likely to occur. In addition to causing a decrease in intensity, light incident from the outside attenuates, leading to a decrease in the intensity of light received by the optical sensor element and a decrease in light receiving sensitivity.
- Translucent epoxy resins generally do not contain fillers such as silica, carbon, and alumina, compared to epoxy resins that contain a lot of silica fillers used for sealing IC packages. The value remains. For this reason, the expansion coefficient is higher than that of the resin containing the filler, and in a thermal shock environment where high and low temperatures are repeated and in a reflow atmosphere where the resin is suddenly exposed to a high temperature atmosphere, the molded resin undergoes significant expansion and contraction. This will lead to peeling and cracking. As a result, light incident from the outside is attenuated, and it is difficult to obtain high reliability such as a decrease in light intensity received by the optical sensor element and partial destruction of the mold resin.
- the resin that cuts infrared light provided on the outer surface of the light-transmitting mold resin may easily deteriorate the characteristics of the resin due to heat and moisture.
- the characteristics tend to be unstable. Since both the translucent resin that molds the periphery of the optical sensor element and the resin that cuts infrared light deteriorate, there are multiple resin factors that affect reliability, and high reliability is obtained. Is difficult.
- the epoxy resin contains a benzene ring in the resin structure.
- the benzene ring is damaged, leading to ring-opening decomposition. This means that the resin has decomposed, and the epoxy resin is decomposed by ultraviolet rays.
- the light incident from the outside is attenuated and the light intensity received by the optical sensor element is reduced, and it is difficult to obtain high reliability because the mold resin is decomposed.
- the mold resin will become thinner and thicker.
- the above-described resin peeling, cracking, discoloration, and the like are more likely to occur, and at the same time, mechanical strength is reduced and deformation is easily caused.
- the present invention provides a sealing resin in which a glass having a composition with high reliability and visibility characteristics is newly created, and the obtained new glass is pulverized into a filler to be dispersed and mixed into the resin. It is an object to provide a highly reliable photosensor device that can be miniaturized as a package.
- a phosphate glass having visibility characteristics is adjusted by adjusting the composition, and the obtained phosphate glass is crushed into a filler state into a resin.
- the mixed resin containing glass filler is characterized in that it has a structure in which it is used as a sealing resin for a resin-sealed package structure.
- the optical sensor element can be packaged with a resin mixed with a glass filler having specific visibility characteristics around the periphery, so that not only from the top surface but also from outside light incident from the side or from the side surface direction. Sufficient visibility characteristics can be obtained even with respect to incident external light.
- the package since the visibility characteristics are obtained with the glass filler compared to the ones that have obtained the visibility characteristics only with the resin typified by the dye, the package can have the visibility characteristics with high heat resistance.
- the expansion coefficient of the sealing resin can be lowered, and the expansion and shrinkage of the mold resin due to the thermal shock environment that repeats high and low temperatures and the reflow atmosphere that is exposed to the high temperature atmosphere can be eased. Can be made difficult to occur.
- the optical sensor device can reduce the occurrence of discoloration, peeling and cracking of the resin in the resin-encapsulated structure having the visibility characteristic, and can reduce the change in the visibility characteristic and the decrease in the light receiving sensitivity. it can.
- the phosphate glass having the above-mentioned visibility characteristic has a wavelength range of 540 nm to 560 nm at the central peak of the transmittance, the transmittance in the wavelength range of 700 nm to 1200 nm is 2% or less, and is 300 nm to 430 nm.
- the one having a transmittance characteristic with a transmittance in the wavelength range of 3% or less is used.
- the sealing resin includes an epoxy resin, a silicon resin, an acrylic resin, a urethane resin, a melamine resin, a urea resin, a phenol resin, and a mixture thereof, and a light-transmitting resin such as polyamide, polycarbonate, and polystyrene. Is used.
- the optical sensor device of the present invention has a structure in which the periphery of the optical sensor element is sealed with a resin mixed with a glass filler obtained by pulverizing phosphate-based glass having visibility characteristics in a structure in which the periphery of the optical sensor element is sealed with resin.
- a package having a resin-encapsulated structure capable of continuously obtaining a stable visibility characteristic that is strong against heat, moisture, and ultraviolet rays with respect to a resin material having a visibility characteristic using an organic dye. It can be said that.
- the package has a resin-encapsulated structure in which a finely pulverized phosphate-based glass having a visibility characteristic is adjusted by mixing the composition into a resin, and the glass filler around the optical sensor element has a visibility characteristic.
- Phosphate-based glass filler having visibility characteristics has a wavelength range of 540 nm to 560 nm at the central peak of transmittance, transmittance in the wavelength range of 700 nm to 1200 nm is 2% or less, and a wavelength range of 300 nm to 430 nm It is a crushed glass filler made of glass having a transmittance characteristic of 3% or less, and having a particle size of about 1 ⁇ m to 20 ⁇ m, preferably 1 ⁇ m to 3 ⁇ m.
- the optical sensor device having the glass filler mixed resin sealing structure can receive light having a visibility characteristic not only in the direction directly above the optical sensor element but also in light incident from an oblique direction or a lateral direction.
- a highly reliable optical sensor device can be provided.
- the optical sensor device of the present invention has a structure in which the periphery of the element mounting portion is sealed with a resin obtained by mixing a phosphate glass having a visibility characteristic with a unique composition into a filler. .
- FIG. 1 schematically shows a cross-sectional configuration of the optical sensor device of the present invention.
- the resin-sealed portion is composed of a resin in which a glass filler obtained by pulverizing phosphate glass having visibility characteristics by adjusting the composition is dispersed and mixed.
- the periphery of the optical sensor element and the element mounting portion is made of a resin mixed with a glass filler having visibility characteristics, and the optical sensor element and the element mounting portion are in close contact with the resin.
- the adhered resin is cured to form a package.
- the composition of phosphate glass with visibility characteristics is 1) P 2 O 5 40-60% 2) BaO 20-40% 3) including Al 2 O 3 , La 2 O 3 , and Y 2 O 3 , Furthermore, Al 2 O 3 + La 2 O 3 + Y 2 O 3 1-8% 4) containing ZnO, MgO, CaO and SrO, ZnO + MgO + CaO + SrO 1-15% 5) including Li 2 O, Na 2 O, K 2 O, Li 2 O + Na 2 O + K 2 O 1-15% 6) CuO 3-10% 7) V 2 O 5 1-5% 8) NiO 1-5% Consists of.
- the said composition shall have a visibility characteristic and high weather resistance compared with the conventional phosphate glass.
- the phosphate-based glass having visibility characteristics is a crushed glass filler having a particle size of about 1 ⁇ m to 20 ⁇ m, preferably 1 ⁇ m to 3 ⁇ m.
- the pulverized glass filler is mixed with a resin and kneaded, and defoamed and compatibilized to form a paste or slurry, thereby obtaining a liquid resin form in which the glass filler is mixed.
- the lead frame can be made of metal or resin metallized, and the substrate can be made of resin, ceramic, metal, glass or silicon. Furthermore, it is also possible to have a structure in which the periphery of the optical sensor element mounted on the lead frame having a cavity and the substrate is filled with resin.
- FIG. 1 is a schematic longitudinal sectional view of the optical sensor device 14 of the present embodiment.
- the optical sensor element 4 is fixed and fixed to the element mounting portion 7 by the die attach agent 3.
- An electrode (not shown) is provided on the upper surface of the optical sensor element 4, and the electrode provided on the optical sensor element 4 by the wire 5.
- the lead frames 6a and 6b are electrically connected.
- the element mounting portion 7 is usually made of the same material as the lead frames 6a and 6b, and is also called a die pad.
- the phosphate which has the visibility characteristic which grind
- a resin sealing part 1 in which a system glass is dispersed and mixed in a resin covers the periphery to form an exterior package. Part of the lead frames 6a and 6b is exposed to the outside from the resin sealing portion 1 and functions as an external terminal.
- a tablet having finely pulverized glass having a visibility characteristic and made into a glass filler is dispersed and mixed in a resin, and then molded into a tablet.
- the resin sealing part 1 can be made into a package.
- Phosphate-based glass as a glass filler has visibility characteristics, and its composition is in terms of weight percent, 1) P 2 O 5 40-60% 2) BaO 20-40% 3) including Al 2 O 3 , La 2 O 3 , and Y 2 O 3 , Furthermore, Al 2 O 3 + La 2 O 3 + Y 2 O 3 1-8% 4) containing ZnO, MgO, CaO and SrO, ZnO + MgO + CaO + SrO 1-15% 5) including Li 2 O, Na 2 O, K 2 O, Li 2 O + Na 2 O + K 2 O 1-15% 6) CuO 3-10% 7) V 2 O 5 1-5% 8) NiO 1-5% It is comprised by.
- the wavelength range of 540 nm to 560 nm is at the central peak of the transmittance
- the transmittance in the wavelength range of 700 nm to 1200 nm is 2% or less
- the transmittance in the wavelength range of 300 nm to 430 nm Has a visibility characteristic having a characteristic of 3% or less and a high weather resistance as compared with the conventional phosphate glass.
- Table 1 shows a comparison result between this example and a comparative example showing the effectiveness of this composition. It was confirmed by relative evaluation that it is possible to achieve both the visibility characteristics shown in FIG. 13 and high weather resistance by the composition and addition amount of Example A based on this Example in Table 1. . In comparative experiments, the absence of BaO in Comparative Example B, or the presence of B 2 O 3 or SiO 2 in Comparative Examples C or D appears to have an unfavorable effect.
- the transmittance in a short wavelength region of 300 nm to 430 nm is 3% or less while being a resin sealing structure.
- the expansion coefficient of the resin can be reduced by 30% or more, and it exceeds the transmittance in the wavelength range of 540 nm to 560 nm by using resin dyes and conventional glass, and at the same time, the glass is resistant to heat of sensitivity and ultraviolet rays. Visibility characteristics can be obtained, and a highly reliable package with a resin-encapsulated structure can be obtained.
- Resin having visibility characteristics includes a pulverized phosphate glass having a wavelength characteristic of 2% or less in the wavelength range of 700 nm to 1200 nm, and a transmission in the wavelength range of 300 nm to 430 nm. It can also be obtained by mixing a glass obtained by pulverizing phosphate glass having a wavelength characteristic with a rate of 3% or less into a filler at a certain ratio.
- FIG. 2 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the resin sealing portion 1 is a portion having a package structure in which a glass filler having fine visibility and glass filler dispersed and mixed in a resin is sealed by a transfer molding method.
- the structure is such that the element mounting portion 8 having heat dissipation is thickened in the cross-sectional direction and a part is exposed from the resin sealing portion 1.
- the element mounting portion 8 having heat dissipation can release the heat generated in the optical sensor element 4 to the outside of the resin sealing portion 1, so that the package can have a low thermal resistance.
- FIG. 3 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the resin-sealed portion 2 is sealed by a transfer mold method in which a glass filler with finely crushed glass having a light-shielding property is dispersed in a resin, and after the resin-sealed portion 2 is cured In this state, an opening portion is provided in the upper surface direction of the optical sensor element 4, and the opening portion is filled with a liquid resin in which a glass filler having a visibility characteristic is dispersed and mixed, and cured.
- the resin sealing portion 1 having visibility characteristics is provided.
- the package can have a structure in which visibility characteristics can be obtained only in the direction directly above the optical sensor element 4, and usage that does not require visibility characteristics from an oblique direction or a lateral direction with respect to the optical sensor element 4 is possible. It can be set as the package which has an effective structure with respect to the request
- the resin sealing portion 2 has a package structure in which a glass having light-shielding properties is finely pulverized to form a glass filler, which is then dispersed and mixed in a resin.
- the phosphate glass made into a glass filler has a light-shielding property, and aims to have a light-shielding property having a transmittance of 2% or less in a wavelength range of 300 nm to 1200 nm.
- This composition can also have higher weather resistance than conventional phosphate glass.
- the phosphate glass having a light shielding property has physical properties such as an expansion coefficient similar to those of the phosphate glass having a visibility characteristic, and the resin sealing portion 1 and the resin sealing portion 2 are expanded. The difference in coefficients does not become a problem, and a package having a resin sealing structure having the same high weather resistance level can be obtained.
- FIG. 4 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the resin sealing portion 2 has a package structure in which a glass filler having finely pulverized glass is dispersed and mixed in a resin and sealed by a transfer molding method.
- the resin sealing portion 1 filled in the opening is made of a liquid resin obtained by dispersing and mixing a glass filler having a visibility characteristic into a glass filler, and is the same as the embodiment of FIG. Structure.
- the difference is that it has a heat dissipation property made of the same material as that of the lead frames 6a and 6b, is thick in the cross-sectional direction, and a part is exposed from the resin sealing portion 1.
- heat-radiating heat generated in the optical sensor element 4 can be released to the outside of the resin sealing portion 1, so that a package with low thermal resistance can be obtained.
- FIG. 5 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the resin sealing portion 9 is sealed with a translucent resin by a transfer molding method, and the shape after the resin sealing portion 9 is cured is more in the upper surface direction of the optical sensor element 4 than the dimension of the optical sensor element.
- a structure having a small opening portion is provided, and the resin sealing portion 1 having the visibility characteristic is provided by filling and curing a liquid resin in which a glass filler having a visibility characteristic is dispersed and mixed in the opening location.
- the resin sealing portion 9 has a rough surface having a grain shape on the outer peripheral surface and a light scattering effect that leaves a rough processing mark, and external light is reflected or scattered by the surface and greatly attenuated. Surface structure.
- a package having a structure capable of having a visibility characteristic in a direction directly above the sensor element 4 can be obtained.
- the periphery of the element is sealed with a resin in which a certain amount of particles having different refractive indexes, such as silica, alumina, and frosted glass, are dispersed and mixed.
- a resin in which a certain amount of particles having different refractive indexes, such as silica, alumina, and frosted glass, are dispersed and mixed.
- FIG. 6 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the resin sealing portion 1 only the upper surface of the mounting substrate 12 on which the optical sensor element is mounted is formed by a transfer molding method or potting using a resin in which a glass filler having visibility characteristics is dispersed and mixed in the resin. It is sealed. In the case of potting, a resin in the form of paste or slurry is used.
- the mounting substrate 12 on which the optical sensor element is mounted a substrate made of resin, ceramic, glass, or silicon is used.
- the mounting substrate 12 on which the optical sensor element is mounted is provided with through electrodes 11a and 11b serving as external terminals, and the surface opposite to the surface on which the optical sensor element 4 is mounted is 11a and 11b.
- the external terminal does not have a size larger than the width of the resin sealing portion 1, and a compact package can be obtained.
- the mounting substrate 12 on which the optical sensor element is mounted is made of resin, ceramic, glass, silicon, metal, or the like, it can be easily thinned, and a small and thin package can be obtained.
- FIG. 7 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the package structure in which filling and sealing is performed by potting a resin in which a glass filler having visibility characteristics is dispersed and mixed in the mounting substrate 12 on which the optical sensor element is placed and the resin sealing portion 1 is mixed in the resin is shown in FIG.
- the mounting substrate 12 on which the optical sensor element is mounted exposes a part of the mounting substrate 12 that is partly or as a bottom surface through the surface opposite to the surface on which the optical sensor element 4 is mounted. Although it has a heat dissipation property with a thickness, it is provided and the optical sensor element 4 is fixed.
- the heat dissipating material is made of the same material as the through electrodes 11a and 11b, or is made of another metal material. As a result, the heat-radiating material can release heat generated in the optical sensor element 4 to the outside, so that the package structure can be reduced in size and thickness and have low thermal resistance.
- FIG. 8 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the resin sealing portion 1 has a package structure in which a glass filler having fine visibility and made into a glass filler is dispersed and mixed in a resin and sealed by a transfer molding method or a liquid resin by potting filling. This is the same as the embodiment of FIG. The difference is that inside the element mounting substrate 12 on which the optical sensor element 4 is mounted, the lead frames 6a and 6b serving as external terminals are bent to fit within the width of the element mounting substrate 12, and the leading end portion of the lead frame
- the back surface portion has a through electrode structure with a non-lead design in which the surface of the element mounting substrate 12 is exposed.
- the optical sensor device 14 can be reduced in mounting area and easily reduced in size.
- the mounting substrate 12 is made of resin, ceramic, or the like, a package having high strength and durability can be obtained with respect to the substrate portion to which stress and impact such as heat history and load accompanying mounting are directly transmitted.
- the mounting substrate 12 may be omitted from the element mounting portion 7.
- the optical sensor element 4 is mounted on the surface of the mounting substrate made of resin or ceramic.
- FIG. 9 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the resin sealing portion 1 is a portion having a package structure in which a glass filler having fine visibility and glass filler dispersed and mixed in a resin is sealed by a transfer molding method or a liquid resin by potting filling.
- the element mounting substrate 12 on which the optical sensor element 4 is mounted has a structure in which the lead frames 6a and 6b are accommodated within the substrate width, and this is the same as the embodiment of FIG. The difference is that the optical sensor element 4 has a structure having an element mounting portion 8 having heat dissipation.
- the element mounting portion 8 having heat dissipation is made of the same metal as the lead frames 6a and 6b or a material having high thermal conductivity.
- the optical sensor device 14 has a small mounting area and can be easily miniaturized.
- the optical sensor device 14 has a low thermal resistance capable of releasing heat generated in the optical sensor element 4. It can be a package structure.
- FIG. 10 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the resin sealing portion 1 is a portion having a package structure in which a glass filler having fine visibility and glass filler dispersed and mixed in a resin is sealed by a transfer molding method or a liquid resin by potting filling.
- 6 is the same as the embodiment of FIG. 6, but the element mounting portion 7 and the external terminals 6a and 6b are made of metal, resin or ceramic provided by metallization, and the element mounting portion 7 is not made thick in the cross-sectional direction.
- the external terminals 6a and 6b have the same thickness as the external terminals 6a and 6b, and the surface opposite to the surface on which the optical sensor element 4 is mounted is exposed to the outside.
- the outer dimensions can be made thin and small.
- a package structure with low thermal resistance that can release heat to the outside can be obtained.
- FIG. 11 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the package includes a mounting part 13 having a cavity, lead frames 6a and 6b, and an optical sensor element 4.
- the optical sensor element 4 has a bottom surface that serves as a bottom of the cavity of the mounting part 13 having a cavity by a die attach agent 3. Fastened to the mounting.
- a part of the lead frames 6a and 6b is exposed on the bottom surface of the bottom of the cavity, and is connected to an electrode (not shown) provided on the upper surface of the optical sensor element 4 by a wire 5 to obtain an electrical connection.
- One of the lead frames 6a and 6b penetrates the mounting portion having the cavity and is exposed to the outside and functions as an external terminal.
- a resin in which a glass filler having visibility characteristics is dispersed and mixed in the resin is filled in the cavity by potting, thereby forming a resin sealing portion 1 for sealing the cavity.
- a phosphate glass having the composition shown in Example 1 can be used as a glass filler having a visibility characteristic dispersed and mixed in a resin.
- the mounting portion 13 having a cavity has a structure made of a resin, ceramic, or the like that has a light shielding property or a reflective property and has heat resistance.
- a resin having reflectivity can be obtained by a method similar to that described in Example 5. As a result, the package can be made resistant to heat resistance, weather resistance, and external impact.
- FIG. 12 is a cross-sectional view of the optical sensor device 14 of the present embodiment.
- the package structure is composed of a mounting portion 13 having a cavity, lead frames 6a and 6b, and a resin sealing portion 1 in which a resin in which a glass filler having visibility characteristics is dispersed and mixed in the cavity is filled and sealed by potting.
- 11 is the same as the embodiment 11, but the element mounting portion 8 made of the same material as the lead frames 6a and 6b and having a heat dissipation property is thickened in the cross-sectional direction, and a part thereof is exposed from the back surface of the mounting portion 13 having the cavity. It has a structure. As a result, the element mounting portion 8 having heat dissipation can release the heat generated in the optical sensor element 4 to the outside, so that it has a low heat resistance package in addition to heat resistance, weather resistance and resistance to external impacts. can do.
- an optical sensor device using a package with a structure that seals the periphery of the optical sensor element with a resin a phosphate-based glass that has been newly developed with a unique composition in the resin is crushed into a glass filler in the resin.
- the structure sealed with a resin that is dispersed and mixed the light sensitivity characteristics of the light received by the light-receiving optical sensor element are not only directly above the optical sensor element, but also in a wide-angle orientation including diagonal and horizontal directions. The angle dependency can be greatly improved.
- the phosphate-based glass according to the present invention has high heat resistance due to the fact that it is a glass having a transmittance characteristic of 3% to 2% or less for light having a wavelength in the ultraviolet region and light having a wavelength in the infrared region in terms of visibility characteristics. And high weather resistance, it has a higher absorption rate for ultraviolet and infrared wavelengths than those with a resin and has good visibility characteristics for a long time. In addition, it has high reliability that is hardly affected by heat, ultraviolet rays and moisture.
- optical sensor devices that are less susceptible to the influence of the surrounding environment and have little change over time, so that they can be used in in-vehicle and outdoor applications, such as TVs, home appliances, and portable terminals, as well as more severe environments. It can contribute to the supply to the optical sensor device-equipped equipment in consideration.
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Abstract
Description
1)P2O5 40~60%
2)BaO 20~40%
3)Al2O3、La2O3、およびY2O3を含み、
さらに Al2O3+La2O3+Y2O3 1~8%
4)ZnO、MgO、CaOおよびSrOを含み、
さらに ZnO+MgO+CaO+SrO 1~15%
5)Li2O、Na2O、K2Oを含み、
さらに Li2O+Na2O+K2O 1~15%
6)CuO 3~10%
7)V2O5 1~5%
8)NiO 1~5%
からなる。前記組成により、従来のリン酸塩系ガラスに比べて、視感度特性と高い耐候性とを有したものとしている。
1)P2O5 40~60%
2)BaO 20~40%
3)Al2O3、La2O3、およびY2O3を含み、
さらに Al2O3+La2O3+Y2O3 1~8%
4)ZnO、MgO、CaOおよびSrOを含み、
さらに ZnO+MgO+CaO+SrO 1~15%
5)Li2O、Na2O、K2Oを含み、
さらに Li2O+Na2O+K2O 1~15%
6)CuO 3~10%
7)V2O5 1~5%
8)NiO 1~5%
により構成されている。
1)P2O5 40~60%
2)BaO 20~40%
3)Al2O3、La2O3、およびY2O3を含み、
さらに Al2O3+La2O3+Y2O3 1~8%
4)ZnO、MgO、CaOおよびSrOを含み、
さらに ZnO+MgO+CaO+SrO 1~15%
5)Li2O、Na2O、K2Oを含み、
さらに Li2O+Na2O+K2O 1~15%
6)CoO 1~5%
7)CuO 3~10%
8)V2O5 5~15%
9)NiO 1~5%
により構成されている。
2 遮光性を有したリン酸塩系ガラスフィラーを樹脂中に含んだ樹脂封止部
3 ダイアタッチ剤
4 光センサ素子
5 ワイヤー
6a,6b リードフレーム
7 素子実装部
8 放熱性を有する素子実装部
9 透光性樹脂
10 光散乱拡散シボ加工面
11a、11b 貫通電極
12 光センサ素子実装基板
13 キャビティを有する実装部
14 光センサ装置
Claims (17)
- 素子実装部と、
前記素子実装部に固着された光センサ素子と、
一端が前記光センサ素子とワイヤーにより接続され、他端が外部端子となるリードフレームと、
前記素子実装部、前記光センサ素子および前記リードフレームを覆う樹脂封止部と、
を有する光センサ装置であって、
前記樹脂封止部は、全て、特定の視感度特性を有するリン酸塩系ガラスを粉砕したガラスフィラーが分散混合された樹脂からなることを特徴とする光センサ装置。 - 前記特定の視感度特性を有するリン酸塩系ガラスの組成は、重量%換算で、
1)P2O5 40~60%
2)BaO 20~40%
3)Al2O3、La2O3、およびY2O3を含み、
さらに Al2O3+La2O3+Y2O3 1~8%
4)ZnO、MgO、CaOおよびSrOを含み、
さらに ZnO+MgO+CaO+SrO 1~15%
5)Li2O、Na2O、K2Oを含み、
さらに Li2O+Na2O+K2O 1~15%
6)CuO 3~10%
7)V2O5 1~5%
8)NiO 1~5%
を含むことを特徴とする請求項1記載の光センサ装置。 - 前記樹脂封止部は、540nmから560nmの波長範囲を透過率の中心ピークに持ち、700nmから1200nmの波長範囲の透過率が2%以下であり、300nmから430nmの波長範囲の透過率が3%以下である特性を有することを特徴とする請求項1または2に記載の光センサ装置。
- 前記ガラスフィラーは粒径が1μmから20μmであることを特徴とする請求項1乃至3のいずれか1項に記載の光センサ装置。
- 前記素子実装部の一部が前記樹脂封止部から露出している請求項1乃至4のいずれか1項に記載の光センサ装置。
- 前記光センサ装置は、前記特定の視感度特性を有するリン酸塩系ガラスを粉砕してフィラーとしたもの混合した樹脂を成型したタブレットを用いて、トランスファーモールド法により光センサ素子の周囲を封止する構造であることを特徴とする請求項1乃至5のいずれか1項に記載の光センサ装置。
- 素子実装部と、
前記素子実装部に固着された光センサ素子と、
一端が前記光センサ素子とワイヤーにより接続され、他端が外部端子となるリードフレームと、
前記素子実装部、前記光センサ素子および前記リードフレームを覆う樹脂封止部と、
を有する光センサ装置であって、
前記樹脂封止部は、特定の視感度特性を有するリン酸塩系ガラスを粉砕したガラスフィラーが分散混合された樹脂からなる第1の樹脂封止部と特定の遮光特性を有するリン酸塩系ガラスを粉砕したガラスフィラーが分散混合された樹脂からなる第2の樹脂封止部とからなる光センサ装置。 - 前記特定の視感度特性を有するリン酸塩系ガラスの組成は、重量%換算で、
1)P2O5 40~60%
2)BaO 20~40%
3)Al2O3、La2O3、およびY2O3を含み、
さらに Al2O3+La2O3+Y2O3 1~8%
4)ZnO、MgO、CaOおよびSrOを含み、
さらに ZnO+MgO+CaO+SrO 1~15%
5)Li2O、Na2O、K2Oを含み、
さらに Li2O+Na2O+K2O 1~15%
6)CuO 3~10%
7)V2O5 1~5%
8)NiO 1~5%
を含み、
前記特定の遮光特性を有するリン酸塩系ガラスの組成は、重量%換算で、
1)P2O5 40~60%
2)BaO 20~40%
3)Al2O3、La2O3、およびY2O3を含み、
さらに Al2O3+La2O3+Y2O3 1~8%
4)ZnO、MgO、CaOおよびSrOを含み、
さらに ZnO+MgO+CaO+SrO 1~15%
5)Li2O、Na2O、K2Oを含み、
さらに Li2O+Na2O+K2O 1~15%
6)CoO 1~5%
7)CuO 3~10%
8)V2O5 5~15%
9)NiO 1~5%
を含むことを特徴とする請求項7記載の光センサ装置。 - 前記第1の樹脂封止部は、540nmから560nmの波長範囲を透過率の中心ピークに持ち、700nmから1200nmの波長範囲の透過率が2%以下であり、300nmから430nmの波長範囲の透過率が3%以下である特性を有し、
前記第2の樹脂封止部は、300nmから1200nmの波長範囲の透過率が2%以下である特性を有することを特徴とする請求項7または8に記載の光センサ装置。 - 光センサ素子と、
前記光センサ素子が載置された実装基板と、
前記実装基板を貫通して設けられ、前記光センサ素子と一端で接続され、多端が外部接続端子となる貫通電極と、
前記実装基板および前記光センサ素子の上面を覆う樹脂封止部と、
を有する光センサ装置であって、
前記樹脂封止部は、全て、特定の視感度特性を有するリン酸塩系ガラスを粉砕したガラスフィラーが分散混合された樹脂からなることを特徴とする光センサ装置。 - 前記特定の視感度特性を有するリン酸塩系ガラスの組成は、重量%換算で、
1)P2O5 40~60%
2)BaO 20~40%
3)Al2O3、La2O3、およびY2O3を含み、
さらに Al2O3+La2O3+Y2O3 1~8%
4)ZnO、MgO、CaOおよびSrOを含み、
さらに ZnO+MgO+CaO+SrO 1~15%
5)Li2O、Na2O、K2Oを含み、
さらに Li2O+Na2O+K2O 1~15%
6)CuO 3~10%
7)V2O5 1~5%
8)NiO 1~5%
を含むことを特徴とする請求項10記載の光センサ装置。 - 前記樹脂封止部は、540nmから560nmの波長範囲を透過率の中心ピークに持ち、700nmから1200nmの波長範囲の透過率が2%以下であり、300nmから430nmの波長範囲の透過率が3%以下である特性を有することを特徴とする請求項10または11に記載の光センサ装置。
- 前記実装基板には、前記光センサ素子が実装される面から反対の面まで貫通して一部が外部へ露出している素子実装部が設けられている請求項10乃至12のいずれか1項に記載の光センサ装置。
- 前記貫通電極は、前記実装基板の内部で屈曲しているリードフレームであって、前記実装基板の幅内に収まると共に、前記リードフレームの先端部分と裏面部分とが前記実装基板の表面から露出している請求項10乃至13のいずれか1項に記載の光センサ装置。
- キャビティを有する実装部と、
前記実装部の有底面に固着された光センサ素子と、
一端が前記有底面において露出し、前記光センサ素子とワイヤーにより接続され、他端が前記実装部から露出して外部端子となるリードフレームと、
前記キャビティを充填している樹脂封止部と、
を有する光センサ装置であって、
前記樹脂封止部は、全て、特定の視感度特性を有するリン酸塩系ガラスを粉砕したガラスフィラーが分散混合された樹脂からなることを特徴とする光センサ装置。 - 前記特定の視感度特性を有するリン酸塩系ガラスの組成は、重量%換算で、
1)P2O5 40~60%
2)BaO 20~40%
3)Al2O3、La2O3、およびY2O3を含み、
さらに Al2O3+La2O3+Y2O3 1~8%
4)ZnO、MgO、CaOおよびSrOを含み、
さらに ZnO+MgO+CaO+SrO 1~15%
5)Li2O、Na2O、K2Oを含み、
さらに Li2O+Na2O+K2O 1~15%
6)CuO 3~10%
7)V2O5 1~5%
8)NiO 1~5%
を含むことを特徴とする請求項15記載の光センサ装置。 - 前記実装部には、前記光センサ素子が固着される前記有底面から反対の面まで貫通して一部が外部へ露出している素子実装部が設けられている請求項15または16に記載の光センサ装置。
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TW201603292A (zh) | 2016-01-16 |
JP2015173254A (ja) | 2015-10-01 |
CN106062969B (zh) | 2017-12-08 |
KR20160122136A (ko) | 2016-10-21 |
US20160351730A1 (en) | 2016-12-01 |
US9773926B2 (en) | 2017-09-26 |
JP6429621B2 (ja) | 2018-11-28 |
KR102313269B1 (ko) | 2021-10-15 |
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