WO2017090267A1 - 電力用半導体装置 - Google Patents
電力用半導体装置 Download PDFInfo
- Publication number
- WO2017090267A1 WO2017090267A1 PCT/JP2016/069596 JP2016069596W WO2017090267A1 WO 2017090267 A1 WO2017090267 A1 WO 2017090267A1 JP 2016069596 W JP2016069596 W JP 2016069596W WO 2017090267 A1 WO2017090267 A1 WO 2017090267A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- silicone gel
- semiconductor device
- power semiconductor
- temperature
- insulating substrate
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/562—Protection against mechanical damage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
- H01L23/043—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
- H01L23/053—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having an insulating or insulated base as a mounting for the semiconductor body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/16—Fillings or auxiliary members in containers or encapsulations, e.g. centering rings
- H01L23/18—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device
- H01L23/24—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device solid or gel at the normal operating temperature of the device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
- H01L23/293—Organic, e.g. plastic
- H01L23/296—Organo-silicon compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
- H01L23/3672—Foil-like cooling fins or heat sinks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3735—Laminates or multilayers, e.g. direct bond copper ceramic substrates
-
- 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
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L24/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/07—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/07—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00
- H01L25/072—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/18—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different subgroups of the same main group of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N
-
- 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
- H01L2224/481—Disposition
- H01L2224/48111—Disposition the wire connector extending above another semiconductor or solid-state body
-
- 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
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48153—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being arranged next to each other, e.g. on a common substrate
- H01L2224/48155—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being arranged next to each other, e.g. on a common substrate the item being non-metallic, e.g. insulating substrate with or without metallisation
-
- 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
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
-
- 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
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/4901—Structure
- H01L2224/4903—Connectors having different sizes, e.g. different diameters
-
- 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
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
-
- 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
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1306—Field-effect transistor [FET]
- H01L2924/13091—Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
-
- 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 silicon gel-sealed power semiconductor device.
- Semiconductor devices of the type in which the energization path is the vertical direction of the device for the purpose of dealing with high voltage and large current are generally power semiconductor devices (for example, IGBT (Insulated Gate Bipolar Transistor), MOSFET (Metal Oxide Semiconductor Field Effect Transistor)). Bipolar transistor, diode, etc.).
- IGBT Insulated Gate Bipolar Transistor
- MOSFET Metal Oxide Semiconductor Field Effect Transistor
- Bipolar transistor diode, etc.
- a power semiconductor device in which a power semiconductor element is mounted on a circuit board and packaged with a sealing resin is used in a wide range of fields such as industrial equipment, automobiles, and railways.
- demands for higher performance of power semiconductor devices such as increased rated voltage and rated current, and expanded operating temperature range (higher temperature, lower temperature) Is growing.
- a case-type power semiconductor device has a structure in which a power semiconductor element is mounted on a base plate for heat dissipation via an insulating substrate, and a case is bonded to the base plate.
- the power semiconductor element mounted inside the power semiconductor device is connected to the main electrode.
- a bonding wire is used to connect the power semiconductor element and the main electrode.
- an insulating gel filler typified by silicone gel is generally used as a sealing resin for power semiconductor devices.
- a semiconductor element in a case is sealed or filled with a silicone gel, and the loss elastic modulus of the silicone gel at 25 ° C. and a shear frequency of 0.1 Hz is 1.0 ⁇ 10 3 to 1. It is 0 ⁇ 10 5 dyne / cm 2 and the complex elastic modulus is 1.0 ⁇ 10 6 dyne / cm 2 or less (see Patent Document 1).
- ⁇ Power semiconductor devices have a wider operating temperature range (higher and lower temperatures). In order to cope with the higher power density of the power semiconductor device, it is essential to operate the power semiconductor element at a high temperature, and the power semiconductor element has shifted from a conventional 150 ° C. operation to a 175 ° C. operation. In addition, the demand for use in a cryogenic environment up to ⁇ 55 ° C. is increasing due to the response to environmental resistance due to the wide use environment of power semiconductor devices. It is necessary to ensure the reliability of the power semiconductor device in the expanded use temperature range from ⁇ 55 ° C. to 175 ° C.
- a temperature cycle test is performed in the temperature range of ⁇ 55 ° C. on the low temperature side and 175 ° C. on the high temperature side.
- a crack in the silicone gel sealing material may occur, resulting in a decrease in insulation reliability.
- the silicone gel having a large thermal expansion coefficient and each member of the power semiconductor device Since the thermal stress due to the difference in thermal expansion coefficient is large, there is a case where a crack occurs in the silicone gel sealing material and the insulation reliability is lowered.
- This invention was made in order to solve the above-mentioned problems, and by suppressing the occurrence of cracks in the silicone gel sealing material, a silicone gel sealing type capable of improving heat resistance and reliability. A power semiconductor device is obtained.
- a power semiconductor device includes an insulating substrate having a metal layer formed on an upper surface, a semiconductor element and a main electrode bonded to the upper surface of the metal layer, a metal wiring connecting the metal layer and the semiconductor element, The metal member bonded to the lower surface side of the insulating substrate, the case member surrounding the insulating substrate and contacting the surface of the metal member where the insulating substrate is bonded, and the region surrounded by the metal member and the case member are filled at room temperature.
- the resin strength is 0.12 MPa or more, the microcrystallization temperature is ⁇ 55 ° C. or less, and the penetration after 1000 hours storage at 175 ° C. is 30 to 50, and the insulating substrate, the metal layer, the semiconductor element, the metal wiring, And a sealing resin for sealing the main electrode.
- the generation of cracks in the silicone gel sealing material can be suppressed in the temperature cycle test and the high temperature storage test of the power semiconductor device, and it becomes possible to obtain a power semiconductor device with high heat resistance and high reliability.
- FIG. 1 is a schematic cross-sectional structure diagram showing a power semiconductor device according to a first embodiment of the present invention.
- FIG. 3 is a schematic cross-sectional structure diagram showing a power semiconductor device when a crack is generated in a silicone gel in a temperature cycle test in Embodiment 1 of the present invention. It is a cross-sectional structure schematic diagram which shows the power semiconductor device in Embodiment 3 of this invention.
- FIG. 1 is a schematic cross-sectional view showing a power semiconductor device according to Embodiment 1 of the present invention.
- a power semiconductor device 100 includes a base plate 1 that is a metal member, an insulating substrate 2, a chip 3 that is a semiconductor element, a bonding wire 4 that is a metal wiring, a main electrode 5, and a case member. 6.
- a lid 7 as a lid material and a silicone gel 8 as a sealing resin are provided.
- an insulating substrate 2 is joined to the base plate 1 with solder (not shown), and a chip 3 is joined to the insulating substrate 2 with solder (not shown).
- the chip 3 is wired with bonding wires 4, and the insulating substrate 2 has the main electrode 5 wired with solder (not shown).
- a case 6 is bonded to the base plate 1 with an adhesive (not shown), and a lid 7 is bonded to the case 6 with an adhesive (not shown). Further, the insulating substrate 2, the chip 3, the bonding wire 4, and the main electrode 5 disposed in a region surrounded by the base plate 1 and the case 6 are sealed with a silicone gel 8.
- the base plate 1 can be made of, for example, a composite material made of aluminum and ceramics such as aluminum and an aluminum alloy, copper and a copper alloy, and AlSiC.
- a composite material made of aluminum and ceramics such as aluminum and an aluminum alloy, copper and a copper alloy, and AlSiC.
- copper and a copper alloy are preferable from the viewpoint of thermal conductivity
- an AlSiC composite material is more preferable from the viewpoint of light weight and low thermal expansion.
- the insulating substrate 2 has metal conductor layers 22 and 23 formed on both surfaces of a ceramic plate 21.
- a ceramic plate 21 silicon nitride (SN), aluminum nitride (AlN), alumina, or Zr-containing alumina can be used.
- AlN and SN are preferable from the viewpoint of thermal conductivity, and SN is more preferable from the viewpoint of material strength.
- the insulating substrate 2 is bonded onto the base plate 1 using solder. As the bonding material, sintered silver or a liquid phase diffusion material can be applied in addition to solder.
- One insulating substrate 2 may be bonded onto the base plate 1, and a plurality of insulating substrates 2 may be used depending on current density or the like.
- the conductor layers 22 and 23 may be made of a metal excellent in electrical conduction and thermal conductivity, such as aluminum and aluminum alloy, copper and copper alloy. In particular, it is preferable to use copper from the viewpoints of heat conduction and electric conduction.
- sintered silver or a liquid phase diffusion material can be applied in addition to the solder.
- Sintered silver or a liquid phase diffusion material has a higher melting temperature than a solder material, and the operating temperature of a power semiconductor device can be increased. Since sintered silver has better thermal conductivity than solder, the heat dissipation of the chip is improved and the reliability is improved. Since the liquid phase diffusion material can be bonded with a lower load than sintered silver, the processability is good, and damage to the chip due to the bonding load can be prevented.
- the bonding wire 4 can be made of aluminum and aluminum alloy, copper and copper alloy.
- the main electrode 5 for example, a copper plate having a thickness of 1.0 mm processed into a predetermined shape by etching or die punching can be used.
- the case 6 and the lid 7 may be formed of a thermoplastic resin molding such as PET (Poly Ethylene Terephthalate) -PBT (Poly Butylene Terephthalate), PPS (Poly Phenylene Sulfide), or a liquid crystal polymer.
- PET Poly Ethylene Terephthalate
- PPS Poly Phenylene Sulfide
- a liquid crystal polymer is preferable from the viewpoint of heat resistance.
- the case 6 is arranged on the entire circumference of the outer peripheral edge portion of the base plate 1 so as to surround the insulating substrate 2. When there are a plurality of insulating substrates 2, the case 6 collectively surrounds the plurality of insulating substrates 2.
- the case 6 is bonded to the base plate 1 using an adhesive or the like.
- the silicone gel 8 is an addition reaction type of a vinyl group of a methyl vinyl siloxane polymer and a methyl hydrogen polymer.
- the addition reaction type silicone gel is preferable from the viewpoint of ensuring insulation reliability without a reaction by-product such as water and alcohol in a short-time curing and curing reaction.
- insulating substrates 2 having a size of 5.7 cm ⁇ 4.8 cm are bonded to a base plate 1 having an outer shape of 25 cm ⁇ 14 cm.
- the height of the case 6 is 4.5 cm, and the silicone gel 8 is sealed in the case 6 with a thickness of 2.7 cm.
- the lid 7 has a grid-like convex portion, and a part of the convex portion is buried in the silicone gel 8. Since the power semiconductor device 100 is large and the sealing thickness of the silicone gel 8 is thick, the silicone gel 8 itself vibrates greatly in the vibration test. The defect that the bonding wire 4 is disconnected by the vibration of the silicone gel 8 itself occurs. For this reason, the lattice-shaped convex part formed in the lid 7 is inserted into the silicone gel 8 and the silicone gel 8 is fixed, thereby reducing the vibration of the silicone gel 8 and preventing the bonding wire 4 from being disconnected. In addition, when the size of the power semiconductor device 100 is not large and the vibration of the silicone gel 8 is not a problem, there may be no lattice-shaped protrusions.
- the cured product characteristics of the silicone gel 8 used for sealing the power semiconductor device 100 were measured by the following method.
- the penetration of the silicone gel 8 cured product was measured with a 1/4 cone (9.38 g) of an automatic penetration tester (RPN-201: manufactured by Hoiso Co., Ltd.).
- the measuring method was based on JIS-K2235 (consistency test), and the distance to enter the silicone gel of the quarter corn in 5 seconds was measured, and 0.1 mm was taken as one unit.
- a glass gel having a diameter of 70 mm and a cured product of silicone gel 8 having a thickness of 20 mm was used.
- the penetration is a measured value indicating the hardness of the silicone gel 8.
- the silicone gel 8 When the silicone gel 8 is subjected to a thermal history in a temperature cycle test or a high temperature storage test, the silicone gel 8 is hardened and deteriorated. When the curing deterioration progresses and the silicone gel 8 becomes hard (the penetration value becomes small), the silicone gel 8 becomes brittle and causes the silicone gel 8 to crack. In this evaluation, the initial penetration at 175 ° C. after a predetermined time was measured and used as an index of curing deterioration of the silicone gel 8 cured product.
- the high temperature is the maximum value (upper limit value) on the high temperature side of the operating temperature of the power semiconductor device, and the high temperature storage is holding at this high temperature side temperature.
- the operating temperature of the power semiconductor device is not the temperature at which the power semiconductor device is actually used, but the operating temperature (temperature range) determined by the design specifications of the power semiconductor device. Will be referred to.
- the loss elastic modulus of the cured silicone gel varies depending on the measurement frequency, the elastic modulus at a very low frequency under the temperature cycle test conditions and actual use conditions and the loss elasticity in the parallel plate method of the viscoelasticity measuring device There is a discrepancy in the rate measurements.
- the measurement sample shape is generally measured using a small disk-shaped sample having a diameter of 20 mm and a thickness of 5 to 6 mm.
- the silicone gel 8 is injected into the space formed by the case 6 and the base plate 1 and cured. Since the progress of curing deterioration of the silicone gel 8 is affected by oxygen in the atmosphere, the silicone gel 8 surrounded by the disk-shaped silicone gel 8 sample, the case 6 of the power semiconductor device, and the base plate 1 is used. A big difference occurs.
- the penetration measurement sample is a 20 mm thick silicone gel 8 cured product prepared on a ⁇ 70 mm glass petri dish, and the curing deterioration phenomenon of the silicone gel 8 in the power semiconductor device can be almost reproduced.
- the penetration after storage at high temperature has a high correlation with the occurrence of cracks in the temperature cycle test in the power semiconductor device, and the penetration after storage at high temperature was used as an index value for the occurrence of cracks in silicone 8. .
- the microcrystallization temperature of the cured silicone gel 8 was measured by a differential scanning calorimeter (DSC: Differential Scanning Calorimetry) (DSC7000x: manufactured by Hitachi High-Tech Science Co., Ltd.). The measurement conditions were that the temperature was raised from ⁇ 80 ° C. to 100 ° C. at 3 ° C./min in an N 2 atmosphere, and the microcrystallization temperature of the cured silicone gel was determined from the endothermic peak in the low temperature region.
- DSC Differential Scanning Calorimetry
- the property of the cured silicone gel 8 is a soft gel at room temperature, but in the low temperature region, the thermal movement of the silicone chain decreases and the silicone gel 8 is partially microcrystallized. Then, below the microcrystallization temperature, the silicone gel 8 is partially microcrystallized and becomes hard and brittle rubber instead of gel. Since the silicone gel 8 is hard and brittle below the microcrystallization temperature, use of the power semiconductor device below the microcrystallization temperature causes cracking of the silicone gel 8. Therefore, it is necessary to set the microcrystallization temperature of the silicone gel 8 to be equal to or lower than the use temperature (low temperature use temperature) on the low temperature side where the power semiconductor device is used.
- the use temperature on the low temperature side (low temperature specification temperature) is the minimum value (lower limit value) of the use temperature of the power semiconductor device.
- the room temperature generally means a range of about 20 ° C. to 25 ° C.
- the resin strength of the cured silicone gel was measured by a shear adhesion test using a sample in which an aluminum plate was bonded with a cured silicone gel using an autograph (AG-IS, manufactured by Shimadzu Corporation).
- AG-IS manufactured by Shimadzu Corporation
- a spacer / dam of 20 mm ⁇ 40 mm ⁇ 0.24 mmt is formed on the aluminum plate of the adherend with fluorine tape, about 0.5 g of silicone gel 8 is applied, and the other aluminum plate It was prepared by curing the silicone gel 8 after fixing with a clip.
- the measurement was performed at room temperature at a tensile speed of 5 mm / min, and the maximum test force was measured. All the fracture modes of the samples after fracture were cohesive fracture of the silicone gel 8. Since the failure mode was cohesive failure of the silicone gel 8, this maximum test force was defined as the resin strength of the silicone gel 8.
- a temperature cycle test was conducted.
- the temperature cycle test was conducted using a thermal shock test apparatus.
- the temperature cycle test was performed for 1000 cycles under the condition of holding at the low temperature side -55 ° C and the high temperature side 175 ° C for 1 hour each. After the completion of 1000 cycles, the presence or absence of cracks in the silicone gel 8 was confirmed by appearance observation.
- the temperature cycle test was conducted using 10 types of silicone gels having different resin strength, microcrystallization temperature, and penetration after storage at a high temperature of 175 ° C.
- FIG. 2 is a schematic cross-sectional structure diagram showing the power semiconductor device when a crack occurs in the silicone gel in the temperature cycle test in the first embodiment of the present invention.
- a power semiconductor device 100 includes a base plate 1 that is a metal member, an insulating substrate 2, a chip 3 that is a semiconductor element, a bonding wire 4 that is a metal wiring, a main electrode 5, a case member 6, and a lid that is a lid material. 7. Silicone gel 8 which is sealing resin, and crack 9 are provided. From the figure, when the silicone gel 8 is deteriorated by the temperature cycle test, a crack 9 is generated inside the silicone gel 8 starting from the protruding portion of the lid 7 and the end of the main electrode 5. Due to the crack 9, the reliability of the power semiconductor device 100 is deteriorated.
- Table 1 shows the prototype specifications and temperature cycle test results of the power semiconductor device using this embodiment.
- the resin strength of the silicone gel 8 can be increased to 0.12 MPa or more by optimizing the chemical structure and crosslinking density of the silicone gel 8.
- the chemical structure of the silicone gel 8 is composed of a polymer of dimethylsiloxane, and the resin strength can be improved by using a part of the dimethylsiloxane as diphenylsiloxane.
- the silicone gel is crosslinked by the addition reaction of the vinyl group of the methylvinylsiloxane polymer and the methylhydrogen polymer.
- the crosslinking density is 0.3 to 1.3 mol% in terms of the molar fraction of the silicone gel 8 polymer. It is preferable that When the crosslinking density is lower than 0.3 mol%, the resin strength is insufficient and cracks of the silicone gel 8 occur. When it is higher than 1.3 mol%, the silicone gel 8 is hard and brittle, and the silicone gel 8 cracks. appear.
- the upper limit of the resin strength is preferably 0.6 MPa or less.
- the silicone gel 8 When the silicone gel 8 receives a thermal history of 175 ° C. in the temperature cycle test, the silicone gel 8 is hardened and deteriorated. When the curing deterioration progresses and the silicone gel 8 becomes hard, the silicone gel 8 becomes brittle and the silicone gel 8 is cracked. It was found that 30 or more was the optimum region when viewed at a penetration of 1000 HR at 175 ° C.
- the silicone gel 8 in case 10 had a penetration of 70 before the temperature cycle test and a penetration of 20 after 1000 hours of storage at 175 ° C., and cracks occurred in the silicone gel 8 in the temperature cycle test. It is considered that this is because the silicone gel 8 is hardened and deteriorated due to the temperature history of the temperature cycle test, the silicone gel 8 becomes brittle, and cracks of the silicone gel 8 are generated due to thermal stress in the temperature cycle test. Thus, even if the penetration of the silicone gel 8 before the temperature cycle test is a value of 70 and 30 or more, the silicone gel 8 is cracked by the temperature cycle test. From this, it can be seen that not the initial penetration of the silicone gel 8 but the penetration of the silicone gel 8 after high-temperature storage correlates with the occurrence of cracks in the silicone gel 8 in the temperature cycle test.
- the silicone gel 8 when the penetration of the cured product of the silicone gel 8 is greater than 70, the silicone gel 8 is very soft, so that bubbles are easily generated in the silicone gel 8 when the power semiconductor device receives a thermal history.
- the insulating properties of the power semiconductor device are deteriorated. Therefore, from the viewpoint of preventing the generation of air bubbles in the silicone gel, 70 or less is preferable in view of the penetration after 1000 HR storage at 175 ° C.
- the penetration after storing at 175 ° C. at a high temperature can be increased to 30 or more.
- the heat resistance improver include metal complexes such as titanium, cerium, iron, and nickel, and a single substance or a mixture can be used.
- a cerium complex and an iron complex are preferred.
- the property of the silicone gel 8 is a soft gel at room temperature, but in the low temperature region, the thermal motion of the silicone chain is reduced and the silicone gel 8 is partially microcrystallized. Below the microcrystallization temperature, the silicone gel 8 is partially microcrystallized into a hard and brittle rubber instead of a gel. Since the silicone gel 8 is hard and brittle below the microcrystallization temperature, if the power semiconductor device is used below the microcrystallization temperature, it causes cracking of the silicone gel 8. Since the temperature on the low temperature side of the temperature cycle test is ⁇ 55 ° C., the optimum range for the microcrystallization temperature is ⁇ 55 ° C. or less.
- the microcrystallization temperature can be reduced to ⁇ 55 ° C. or less by optimizing the chemical structure of the silicone gel 8.
- the chemical structure of the silicone gel 8 is composed of a polymer of dimethylsiloxane. By using a part of this dimethylsiloxane as diphenylsiloxane, the silicone gel polymer cannot be regularly aligned due to steric hindrance of the phenyl group at a low temperature state. Even at a low temperature, the microcrystallization temperature can be reduced to ⁇ 55 ° C. or lower without producing microcrystals.
- the proportion of diphenylsiloxane is preferably 4 mol% to 10 mol% in terms of the molar ratio of the silicone gel polymer. If the molar ratio of the silicone gel polymer is less than 4 mol%, the effect of suppressing microcrystallization due to steric hindrance of the phenyl group is small, and the microcrystallization temperature cannot be made ⁇ 55 ° C. or lower. Moreover, when the ratio of diphenylsiloxane exceeds 10 mol%, material cost will become high and it is economically disadvantageous.
- the physical properties of the silicone gel 8 are such that the resin strength at room temperature is 0.12 MPa or more, the microcrystallization temperature is ⁇ 55 ° C. or less, and the penetration after storage at high temperature. Therefore, the generation of cracks in the silicone gel 8 can be prevented in the temperature cycle, and a highly reliable power semiconductor device can be obtained.
- Embodiment 2 in the second embodiment, in the first embodiment, two 5 cm ⁇ 4 cm insulating substrates 2 are joined to the base plate 1 having an outer shape of 14 cm ⁇ 10 cm, the case 6 has a height of 4 cm, and the silicone gel 8 has a thickness of 2 cm. It is different that it was sealed with. Even in such a configuration, the reliability of the power semiconductor device 100 can be improved.
- Table 2 shows the prototype specifications and temperature cycle test results of the power semiconductor device using this embodiment.
- the physical properties of the silicone gel 8 are such that the resin strength at room temperature is 0.12 MPa or more, the microcrystallization temperature is ⁇ 55 ° C. or less, and the penetration after storage at high temperature. Therefore, the generation of cracks in the silicone gel 8 can be prevented in the temperature cycle, and a highly reliable power semiconductor device can be obtained.
- Embodiment 3 FIG.
- the third embodiment is different from the second embodiment in that the base plate 1 is a cooler 10. Since the cooler 10 is directly joined to the power semiconductor device, the thermal resistance is small, the heat dissipation characteristics are improved, and the reliability can be improved.
- FIG. 3 is a schematic sectional view showing a power semiconductor device according to the third embodiment of the present invention.
- a power semiconductor device 200 includes an insulating substrate 2, a chip 3 that is a semiconductor element, a bonding wire 4 that is a metal wiring, a main electrode 5, a case member 6, a lid 7 that is a lid material, and silicone that is a sealing resin.
- the gel 8 includes a cooler 10 that is a metal member.
- the cooler 10 can be made of, for example, a composite material made of aluminum and ceramics such as aluminum and aluminum alloy, copper and copper alloy, and AlSiC.
- aluminum and aluminum alloys are preferable from the viewpoints of thermal conductivity, workability, and light weight.
- Table 3 shows the prototype specifications and temperature cycle test results of the power semiconductor device using this embodiment.
- the physical properties of the silicone gel 8 are such that the resin strength at room temperature is 0.12 MPa or more, the microcrystallization temperature is ⁇ 55 ° C. or less, and the penetration after storage at high temperature. Therefore, the generation of cracks in the silicone gel 8 can be prevented in the temperature cycle, and a highly reliable power semiconductor device can be obtained.
Abstract
Description
図1は、本発明の実施の形態1に係る電力用半導体装置を示す断面模式図である。図において、電力用半導体装置100は、電力用半導体装置100は、金属部材であるベース板1、絶縁基板2、半導体素子であるチップ3、金属配線であるボンディングワイヤ4、主電極5、ケース部材6、蓋材である蓋7、封止樹脂であるシリコーンゲル8を備える。
実施の形態2は、実施の形態1において、外形14cm×10cmのベース板1に、5cm×4cmの絶縁基板2が2枚接合され、ケース6高さは4cmでシリコーンゲル8が2cmの厚さで封止したことが異なる。このような構成にした場合においても、電力用半導体装置100の信頼性を向上させることができる。
本実施の形態3は、実施の形態2において、ベース板1を冷却器10としたことが異なる。電力用半導体装置に対して冷却器10が直接接合されているため、熱抵抗が小さく放熱特性が向上して信頼性が向上することができる。
Claims (5)
- 上面に金属層が形成された絶縁基板と、
前記金属層の上面に接合された半導体素子および主電極と、
前記金属層と前記半導体素子とを接続する金属配線と、
前記絶縁基板の下面側に接合された金属部材と、
前記絶縁基板を取り囲み前記金属部材と接着されたケース部材と、
前記金属部材と前記ケース部材とで囲まれた領域に充填され、室温での樹脂強度は0.12MPa以上、微結晶化温度は-55℃以下、175℃で1000時間保存後の針入度は30以上50以下であり、前記絶縁基板と前記金属層と前記半導体素子と前記金属配線と前記主電極とを封止する封止樹脂と、
を備えたことを特徴とする電力用半導体装置。 - 前記封止樹脂は、ジフェニルシロキサンの割合が前記封止樹脂中のモル分率で、4mol%以上10mol%以下、メチルビニルシリキサンのビニル基とメチルハイドロジェンシロキサンとの付加反応による架橋密度が、前記封止樹脂中のモル分率で0.3mol%以上1.3mol%以下、および鉄錯体の耐熱性向上剤を配合したシリコーンゲルであることを特徴とする請求項1記載の電力用半導体装置。
- 前記金属部材は、冷却用フィンを有する冷却器であることを特徴とする請求項1または請求項2に記載の電力用半導体装置。
- 前記絶縁基板は、前記ベース板に複数個接合され前記複数の絶縁基板を一括して前記ケース部材で取り囲んだことを特徴とする請求項1から請求項3のいずれか1項に記載の電力用半導体装置。
- 前記封止樹脂の上面を覆い、前記封止樹脂に挿入される凸部を有し、前記ケース部材と固着された蓋材を備えたことを特徴とする請求項1から請求項4のいずれか1項に記載の電力用半導体装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112016005409.2T DE112016005409T5 (de) | 2015-11-27 | 2016-07-01 | Leistungs-halbleitereinrichtung |
CN201680068081.6A CN108369927B (zh) | 2015-11-27 | 2016-07-01 | 电力用半导体装置 |
JP2017552281A JP6537627B2 (ja) | 2015-11-27 | 2016-07-01 | 電力用半導体装置 |
US15/776,173 US10461045B2 (en) | 2015-11-27 | 2016-07-01 | Power semiconductor device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015231875 | 2015-11-27 | ||
JP2015-231875 | 2015-11-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017090267A1 true WO2017090267A1 (ja) | 2017-06-01 |
Family
ID=58763365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/069596 WO2017090267A1 (ja) | 2015-11-27 | 2016-07-01 | 電力用半導体装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10461045B2 (ja) |
JP (1) | JP6537627B2 (ja) |
CN (1) | CN108369927B (ja) |
DE (1) | DE112016005409T5 (ja) |
WO (1) | WO2017090267A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109860124A (zh) * | 2017-11-30 | 2019-06-07 | 三菱电机株式会社 | 半导体装置以及电力变换装置 |
WO2021130989A1 (ja) * | 2019-12-26 | 2021-07-01 | 三菱電機株式会社 | パワーモジュールおよび電力変換装置 |
DE102018210855B4 (de) | 2017-10-11 | 2022-06-15 | Mitsubishi Electric Corporation | Halbleitervorrichtung |
WO2022172606A1 (ja) * | 2021-02-12 | 2022-08-18 | 富士電機株式会社 | 半導体モジュール |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6742540B2 (ja) * | 2017-12-13 | 2020-08-19 | 三菱電機株式会社 | 半導体装置及び電力変換装置 |
JP7108567B2 (ja) * | 2019-03-20 | 2022-07-28 | 株式会社東芝 | パワーモジュール |
US11328973B2 (en) * | 2020-06-26 | 2022-05-10 | General Electric Company | Power semiconductor devices with high temperature electrical insulation |
CN113698912A (zh) * | 2021-08-30 | 2021-11-26 | 江苏矽时代材料科技有限公司 | 一种耐高温老化封装硅胶及其制备方法和应用 |
EP4273918A1 (en) * | 2022-05-05 | 2023-11-08 | Infineon Technologies AG | A semiconductor package comprising structures configured to withstand a change of the volume of an potting compound |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1140703A (ja) * | 1997-07-17 | 1999-02-12 | Toray Dow Corning Silicone Co Ltd | 半導体装置 |
JPH11214612A (ja) * | 1998-01-26 | 1999-08-06 | Hitachi Ltd | パワー半導体モジュール |
JP2000311970A (ja) * | 1999-02-25 | 2000-11-07 | Toyota Motor Corp | 半導体装置およびその製造方法 |
JP2002184941A (ja) * | 2000-12-13 | 2002-06-28 | Mitsubishi Electric Corp | 半導体装置 |
JP2002322364A (ja) * | 2001-04-26 | 2002-11-08 | Dow Corning Toray Silicone Co Ltd | シリコーンゲル組成物 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2582690B2 (ja) | 1991-09-13 | 1997-02-19 | 信越化学工業株式会社 | 防振特性に優れたシリコーンゲル組成物 |
JPH11269387A (ja) | 1998-03-23 | 1999-10-05 | Ge Toshiba Silicone Kk | 一液形硬化性シリコーン組成物 |
JP4494746B2 (ja) * | 2003-09-25 | 2010-06-30 | 浜松ホトニクス株式会社 | 半導体装置 |
JP4967447B2 (ja) * | 2006-05-17 | 2012-07-04 | 株式会社日立製作所 | パワー半導体モジュール |
JP2013055150A (ja) * | 2011-09-01 | 2013-03-21 | Toshiba Corp | 半導体装置及びその製造方法 |
JP6205824B2 (ja) * | 2013-04-26 | 2017-10-04 | 富士電機株式会社 | パワーモジュール |
CN103360603B (zh) * | 2013-06-21 | 2015-12-23 | 深圳市森日有机硅材料有限公司 | 一种led封装用苯基乙烯基硅树脂及其制备方法 |
US8923674B1 (en) * | 2013-07-02 | 2014-12-30 | Sumitomo Electric Industries, Ltd. | Optical fiber and optical cable |
-
2016
- 2016-07-01 CN CN201680068081.6A patent/CN108369927B/zh active Active
- 2016-07-01 US US15/776,173 patent/US10461045B2/en active Active
- 2016-07-01 DE DE112016005409.2T patent/DE112016005409T5/de active Pending
- 2016-07-01 JP JP2017552281A patent/JP6537627B2/ja active Active
- 2016-07-01 WO PCT/JP2016/069596 patent/WO2017090267A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1140703A (ja) * | 1997-07-17 | 1999-02-12 | Toray Dow Corning Silicone Co Ltd | 半導体装置 |
JPH11214612A (ja) * | 1998-01-26 | 1999-08-06 | Hitachi Ltd | パワー半導体モジュール |
JP2000311970A (ja) * | 1999-02-25 | 2000-11-07 | Toyota Motor Corp | 半導体装置およびその製造方法 |
JP2002184941A (ja) * | 2000-12-13 | 2002-06-28 | Mitsubishi Electric Corp | 半導体装置 |
JP2002322364A (ja) * | 2001-04-26 | 2002-11-08 | Dow Corning Toray Silicone Co Ltd | シリコーンゲル組成物 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018210855B4 (de) | 2017-10-11 | 2022-06-15 | Mitsubishi Electric Corporation | Halbleitervorrichtung |
CN109860124A (zh) * | 2017-11-30 | 2019-06-07 | 三菱电机株式会社 | 半导体装置以及电力变换装置 |
JP2019102575A (ja) * | 2017-11-30 | 2019-06-24 | 三菱電機株式会社 | 半導体装置および電力変換装置 |
CN109860124B (zh) * | 2017-11-30 | 2023-08-29 | 三菱电机株式会社 | 半导体装置以及电力变换装置 |
WO2021130989A1 (ja) * | 2019-12-26 | 2021-07-01 | 三菱電機株式会社 | パワーモジュールおよび電力変換装置 |
JP6927437B1 (ja) * | 2019-12-26 | 2021-09-01 | 三菱電機株式会社 | パワーモジュールおよび電力変換装置 |
WO2022172606A1 (ja) * | 2021-02-12 | 2022-08-18 | 富士電機株式会社 | 半導体モジュール |
JP7409526B2 (ja) | 2021-02-12 | 2024-01-09 | 富士電機株式会社 | 半導体モジュール |
Also Published As
Publication number | Publication date |
---|---|
JP6537627B2 (ja) | 2019-07-03 |
JPWO2017090267A1 (ja) | 2018-08-30 |
CN108369927A (zh) | 2018-08-03 |
CN108369927B (zh) | 2021-06-11 |
US10461045B2 (en) | 2019-10-29 |
DE112016005409T5 (de) | 2018-08-09 |
US20190267331A1 (en) | 2019-08-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017090267A1 (ja) | 電力用半導体装置 | |
JP5602077B2 (ja) | 半導体装置 | |
JP6399272B1 (ja) | パワーモジュール及びその製造方法並びに電力変換装置 | |
JP6045749B2 (ja) | 半導体装置 | |
JP6526229B2 (ja) | パワーモジュール | |
JPWO2018056287A1 (ja) | 半導体装置および電力変換装置 | |
JP6676079B2 (ja) | 半導体装置およびその製造方法 | |
JP6057926B2 (ja) | 半導体装置 | |
JP2011228336A (ja) | 半導体装置および半導体装置の製造方法 | |
JPWO2016121456A1 (ja) | 半導体装置 | |
JP2006179538A (ja) | 半導体パワーモジュール | |
JP2012015222A (ja) | 半導体装置 | |
JP6041795B2 (ja) | 半導体装置 | |
JP5328740B2 (ja) | 半導体装置および半導体装置の製造方法 | |
JP5807432B2 (ja) | 半導体モジュール及びスペーサ | |
JP2015170785A (ja) | 絶縁基板および電力用半導体装置 | |
JP2008016564A (ja) | 樹脂封止型パワーモジュール | |
JP5258825B2 (ja) | パワー半導体装置及びその製造方法 | |
JP2016143846A (ja) | 半導体装置 | |
JP2007027261A (ja) | パワーモジュール | |
Liu et al. | Evaluation of a lead glass for encapsulating high-temperature power modules for aerospace application | |
JP5240021B2 (ja) | 半導体装置及びその製造方法 | |
JP7119528B2 (ja) | 半導体装置 | |
JP2016046293A (ja) | 半導体装置 | |
Elshabini et al. | Advanced Devices and Electronic Packaging for Harsh Environment |
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: 16868218 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017552281 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112016005409 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16868218 Country of ref document: EP Kind code of ref document: A1 |