WO2005093857A1 - 半導体光検出素子及びその製造方法 - Google Patents
半導体光検出素子及びその製造方法 Download PDFInfo
- Publication number
- WO2005093857A1 WO2005093857A1 PCT/JP2005/005759 JP2005005759W WO2005093857A1 WO 2005093857 A1 WO2005093857 A1 WO 2005093857A1 JP 2005005759 W JP2005005759 W JP 2005005759W WO 2005093857 A1 WO2005093857 A1 WO 2005093857A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- multilayer structure
- light
- semiconductor
- layer
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 306
- 238000004519 manufacturing process Methods 0.000 title claims description 66
- 239000011521 glass Substances 0.000 claims abstract description 98
- 238000005530 etching Methods 0.000 claims abstract description 78
- 239000000758 substrate Substances 0.000 claims description 204
- 238000000034 method Methods 0.000 claims description 61
- 230000003287 optical effect Effects 0.000 claims description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 19
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 19
- 238000001039 wet etching Methods 0.000 claims description 17
- 230000031700 light absorption Effects 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 2
- RJCRUVXAWQRZKQ-UHFFFAOYSA-N oxosilicon;silicon Chemical compound [Si].[Si]=O RJCRUVXAWQRZKQ-UHFFFAOYSA-N 0.000 claims 1
- 238000002161 passivation Methods 0.000 description 16
- 239000000203 mixture Substances 0.000 description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 10
- 101100243945 Fusarium vanettenii PDAT9 gene Proteins 0.000 description 9
- 101001072191 Homo sapiens Protein disulfide-isomerase A2 Proteins 0.000 description 9
- 208000012204 PDA1 Diseases 0.000 description 9
- 102100036351 Protein disulfide-isomerase A2 Human genes 0.000 description 9
- 238000004891 communication Methods 0.000 description 9
- 208000030825 patent ductus arteriosus 2 Diseases 0.000 description 9
- 101150102492 pda1 gene Proteins 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 238000003491 array Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 239000003550 marker Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- 206010034960 Photophobia Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 208000013469 light sensitivity Diseases 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- 101710179738 6,7-dimethyl-8-ribityllumazine synthase 1 Proteins 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 101710186608 Lipoyl synthase 1 Proteins 0.000 description 2
- 101710137584 Lipoyl synthase 1, chloroplastic Proteins 0.000 description 2
- 101710090391 Lipoyl synthase 1, mitochondrial Proteins 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000009719 polyimide resin Substances 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000000927 vapour-phase epitaxy Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14632—Wafer-level processed structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L31/08—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
- H01L31/10—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 characterised by potential barriers, e.g. phototransistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76898—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics formed through a semiconductor substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/481—Internal lead connections, e.g. via connections, feedthrough structures
-
- 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
- H01L24/18—High density interconnect [HDI] connectors; Manufacturing methods related thereto
- H01L24/23—Structure, shape, material or disposition of the high density interconnect connectors after the connecting process
- H01L24/24—Structure, shape, material or disposition of the high density interconnect connectors after the connecting process of an individual high density interconnect connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
- H01L27/14629—Reflectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
- H01L27/14687—Wafer level processing
-
- 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
- H01L2224/18—High density interconnect [HDI] connectors; Manufacturing methods related thereto
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14618—Containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
- H01L27/14627—Microlenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14636—Interconnect structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
- H01L27/14685—Process for coatings or optical elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
- H01L27/1469—Assemblies, i.e. hybrid integration
-
- 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
- H01L2924/12042—LASER
-
- 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
- H01L2924/14—Integrated circuits
-
- 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
- H01L2924/151—Die mounting substrate
- H01L2924/156—Material
- H01L2924/15786—Material with a principal constituent of the material being a non metallic, non metalloid inorganic material
- H01L2924/15788—Glasses, e.g. amorphous oxides, nitrides or fluorides
Definitions
- the present invention relates to a semiconductor photodetector and a method for manufacturing the same.
- optical interconnection technology for transmitting signals within a system device and between devices by light has attracted attention.
- optical semiconductor elements such as a semiconductor light detecting element and a semiconductor light emitting element are used.
- an electrode (signal electrode) for extracting a signal from the photodetector is opposite to the light incident surface in consideration of the mountability on an external substrate. Is preferably arranged on the surface. Examples of such a semiconductor photodetector are disclosed in JP-A-3-104287, JP-A-6-296035, and JP-A-2002-353564. These publications disclose a back-illuminated semiconductor photodetector in which a plurality of compound semiconductor layers are formed on one main surface side of a semiconductor substrate and light is incident from the other main surface side.
- a part of the substrate located below the light receiving part is partially thinned, and the thickness of the substrate is set so as to surround the part.
- the maintained part is formed.
- a first object is to prevent deterioration or disappearance of an optical signal due to light absorption of a semiconductor substrate.
- a second object is to prevent the semiconductor photodetector from being damaged or damaged when the semiconductor photodetector is mounted on an external substrate by wire bonding or bump bonding.
- the present invention relates to a semiconductor photodetector.
- the photodetector has a multilayer structure including a plurality of compound semiconductor layers stacked and having first and second main surfaces facing each other, and a light emitting element formed near the first main surface inside the multilayer structure.
- a first electrode disposed on the first main surface of the multilayer structure and electrically connected to the light receiving region; a first electrode disposed on the second main surface of the multilayer structure;
- An electrode and a light transmitting layer disposed on the first main surface of the multilayer structure, covering the light receiving region and the first electrode, and being optically transparent to incident light.
- the mechanical strength of the multilayer structure is maintained by the light transmitting layer even when the plurality of compound semiconductor layers included in the multilayer structure are thinned.
- this photodetector the second and third electrodes for extracting an output signal are arranged on the second main surface of the multilayer structure. Therefore, this photodetector can be mounted with the second main surface located on the opposite side of the light receiving area facing the mounting surface such as an external substrate. As a result, the photodetector can be easily mounted.
- the light transmission layer may include a film having a silicon oxide force and a glass substrate.
- the glass substrate may be fixed to the multilayer structure via a film that also has silicon oxide properties. Since silicon oxide can be fused to glass, the multilayer structure and the glass substrate can be bonded without using any other adhesive. Therefore, light incident from the glass substrate side can reach the multilayer structure without being absorbed by the adhesive.
- the light transmitting layer may include a film made of silicon oxide or resin without including the glass substrate.
- the plurality of compound semiconductor layers are a high-concentration carrier layer of the first conductivity type and a light of the first conductivity type. It may include an absorption layer and a cap layer of the first conductivity type.
- the light receiving region may be a region of the second conductivity type including at least a part of the cap layer.
- the multilayer structure may further include a dent formed around the light receiving region, and a wiring electrode disposed in the dent.
- the first electrode may be electrically connected to the second electrode via a wiring electrode.
- the third electrode may be electrically connected to a portion of the high concentration carrier layer located near the light receiving region. Since the light receiving region is at least partially separated from other portions of the multilayer structure by the depression formed around the light receiving region, the parasitic capacitance can be further reduced.
- the wiring electrode disposed in the depression is used as a through electrode penetrating the multilayer structure, the formation of the through electrode can be performed extremely easily. Further, by using the through electrode, the high-concentration carrier layer of the light receiving section is directly drawn out from the electrode, so that the series resistance can be significantly reduced.
- the photodetector of the present invention may further include a through wiring penetrating the multilayer structure.
- the first electrode may be electrically connected to the second electrode via a through wiring.
- the third electrode may be electrically connected to the high-concentration carrier layer. In this case, the electrical connection between the first electrode and the second electrode can be reliably performed by the through wiring. Further, since the electrode is directly drawn from the high-concentration carrier layer, the series resistance can be significantly reduced.
- the second and third electrodes each include a pad electrode, and a bump electrode may be arranged on each of the pad electrodes.
- the photodetector according to the present invention may further include a light reflection film provided on the second main surface of the multilayer structure and covering the light receiving region. Light that has passed through the multilayer structure without being absorbed is reflected by the light reflecting film and is incident on the multilayer structure again, so that more light is absorbed by the multilayer structure and, as a result, the light sensitivity is further improved. Can be.
- the light transmission layer may include a lens unit that collects incident light. In this case, even if the light receiving area is smaller than the irradiation range of the incident light, the incident light can be efficiently emitted. Further, the photodetector according to the present invention may include a plurality of the light receiving regions arranged in parallel.
- Another aspect of the present invention relates to a method for manufacturing a semiconductor photodetector.
- This method includes a step of preparing a semiconductor substrate and a step of providing a multilayer structure on a semiconductor substrate.
- the structure includes a plurality of compound semiconductor layers stacked, has first and second main surfaces opposed to each other, a step in which the second main surface is directed to the semiconductor substrate, and a multi-layer structure.
- Forming a light receiving region near the first main surface inside the body providing a first electrode electrically connected to the light receiving region on the first main surface of the multilayer structure, Forming a light transmitting layer optically transparent on the first main surface of the multilayer structure so as to cover the light receiving region and the first electrode; and forming the light transmitting layer on the semiconductor substrate.
- the semiconductor substrate is removed after forming the light transmitting layer on the first main surface of the multilayer structure, the light transmitting layer is provided on the opposite side of the second and third electrodes for extracting output signals.
- the arranged semiconductor photodetector can be easily manufactured.
- the mechanical strength of the multilayer structure is maintained by the light transmitting layer. You will be drowned. It is not necessary to leave a portion where the thickness of the substrate is maintained as in the above-described prior art, and therefore, it is easy to reduce the size of the device. Before the formation of the light transmitting layer, the mechanical strength is maintained by the semiconductor substrate.
- the step of forming the light transmitting layer includes the step of forming a film made of silicon oxide so as to cover the light receiving region and the first electrode; Fixing an optically transparent glass substrate. Since silicon oxide can be fused to glass, the multilayer structure and the glass substrate can be bonded to each other without using an adhesive. Therefore, light incident from the glass substrate side can reach the multilayer structure without being absorbed by the adhesive.
- the step of forming the light transmitting layer may include a step of forming a film made of silicon oxide or resin so as to cover the light receiving region and the first electrode.
- the step of removing the semiconductor substrate may include a step of removing the semiconductor substrate by wet etching. In the step of forming a multilayer structure, the wet etching is stopped. Forming an etching stop layer between the semiconductor substrate and the plurality of compound semiconductor layers. By using an etchant that can etch the semiconductor substrate and cannot etch the etching stop layer, the semiconductor substrate can be selectively removed. Therefore, the semiconductor substrate can be reliably and easily removed while leaving the plurality of compound semiconductor layers.
- the method according to the present invention may further include a step of removing the etching stop layer by wet etching after removing the semiconductor substrate.
- a step of removing the etching stop layer by wet etching after removing the semiconductor substrate.
- the plurality of compound semiconductor layers may include a high-concentration carrier layer of the first conductivity type, a light absorption layer of the first conductivity type, and a cap layer of the first conductivity type.
- the step of forming a multilayer structure may include a step of sequentially stacking a high-concentration carrier layer, a light absorbing layer, and a cap layer on a semiconductor substrate.
- the step of forming the light receiving region may include a step of forming, as the light receiving region, a region of the second conductivity type including at least a part of the cap layer.
- the method may further include a step of forming a depression around the light receiving region, and a step of providing a wiring electrode in the depression that electrically connects the first electrode to the second electrode.
- the step of forming the third electrode includes the step of forming the third electrode so that the third electrode is electrically connected to a portion of the high-concentration carrier layer located near the light receiving region.
- the parasitic capacitance can be further reduced.
- the wiring electrodes arranged in the depressions are used as through electrodes penetrating the multilayer structure, the formation of the through electrodes can be performed extremely easily.
- the step of forming the second electrode may include a step of forming a through wiring penetrating the multilayer structure, and electrically connecting the first electrode to the second electrode via the through wiring.
- the step of forming the third electrode may include a step of forming the third electrode such that the third electrode is electrically connected to the high-concentration carrier layer. In this case, the electrical connection between the first electrode and the second electrode can be reliably performed by the through wiring. Also, from the high concentration carrier layer Is directly extracted, so that the series resistance can be greatly reduced.
- the method according to the present invention may further include a step of forming a light reflecting film covering the light receiving region on the second main surface of the multilayer structure.
- a step of forming a light reflecting film covering the light receiving region on the second main surface of the multilayer structure In this case, light that has passed through the multilayer structure without being absorbed is reflected by the light reflecting film and is incident on the light absorbing layer again, so that more light is absorbed by the multilayer structure and, as a result, the light sensitivity is improved. can do.
- the light transmission layer may include a lens unit that collects incident light. In this case, even if the light receiving area is smaller than the irradiation range of the incident light, the incident light can be efficiently emitted.
- FIG. 1 is a schematic plan view showing a semiconductor photodetector according to a first embodiment.
- FIG. 2 is a schematic sectional view taken along the line II-II in FIG. 1.
- FIG. 3 is a schematic cross-sectional view showing a step of manufacturing the semiconductor photodetector according to the first embodiment.
- FIG. 4 is a schematic cross-sectional view showing a step of manufacturing the semiconductor photodetector according to the first embodiment.
- FIG. 5 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the first embodiment.
- FIG. 6 is a schematic cross-sectional view showing a step of manufacturing the semiconductor photodetector according to the first embodiment.
- FIG. 7 is a schematic cross-sectional view showing a manufacturing step of the semiconductor photodetector according to the first embodiment.
- FIG. 8 is a schematic cross-sectional view showing a step of manufacturing the semiconductor photodetector according to the first embodiment.
- FIG. 9 is a schematic cross-sectional view showing a step of manufacturing the semiconductor photodetector according to the first embodiment.
- FIG. 10 is a schematic cross-sectional view showing a manufacturing step of the semiconductor photodetector according to the first embodiment.
- FIG. 11 is a schematic cross-sectional view showing a step of manufacturing the semiconductor photodetector according to the first embodiment.
- FIG. 12 is a schematic cross-sectional view showing a manufacturing step of the semiconductor photodetector according to the first embodiment.
- FIG. 13 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the first embodiment.
- FIG. 14 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the first embodiment.
- FIG. 15 is a schematic cross-sectional view showing a manufacturing step of the semiconductor photodetector according to the first embodiment.
- FIG. 16 is a schematic sectional view showing a semiconductor photodetector according to a second embodiment.
- FIG. 17 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the second embodiment.
- FIG. 18 is a schematic sectional view showing a semiconductor photodetector according to a third embodiment.
- FIG. 19 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the third embodiment.
- FIG. 20 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the third embodiment.
- FIG. 21 is a schematic sectional view showing a semiconductor photodetector according to a fourth embodiment.
- FIG. 22 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the fourth embodiment.
- FIG. 23 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the fourth embodiment.
- FIG. 24 is a schematic plan view showing a semiconductor photodetector according to a fifth embodiment.
- FIG. 25 is a schematic sectional view of the semiconductor photodetector shown in FIG. 24, taken along the line XXV-XXV.
- FIG. 26 is a schematic cross-sectional view showing a manufacturing process of the semiconductor photodetector according to the fifth embodiment.
- FIG. 27 is a schematic cross-sectional view showing the manufacturing process of the semiconductor photodetector according to the fifth embodiment.
- FIG. 29 is a schematic cross-sectional view illustrating a manufacturing process of the semiconductor photodetector according to the fifth embodiment.
- FIG. 29 A schematic cross-sectional view illustrating the manufacturing process of the semiconductor photodetector according to the fifth embodiment.
- FIG. 30 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the fifth embodiment.
- FIG. 31 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the fifth embodiment.
- FIG. 32 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the fifth embodiment.
- FIG. 33 is a schematic sectional view of a semiconductor photodetector according to a sixth embodiment.
- FIG. 34 is a schematic sectional view showing a manufacturing step of the semiconductor photodetector according to the sixth embodiment.
- FIG. 35 is a schematic sectional view of a semiconductor photodetector according to a seventh embodiment.
- FIG. 36 is a schematic sectional view showing the manufacturing process of the semiconductor photodetector according to the seventh embodiment.
- FIG. 37 is a schematic sectional view showing the manufacturing process of the semiconductor photodetector according to the seventh embodiment.
- FIG. 38 is a schematic sectional view of a semiconductor photodetector according to an eighth embodiment.
- FIG. 39 is a schematic sectional view of a semiconductor photodetector array according to the embodiment.
- FIG. 40 is a schematic sectional view of a semiconductor photodetector array according to the embodiment.
- FIG. 41 is a schematic diagram showing a configuration of an optical interconnection system according to an embodiment. Explanation of symbols
- FIG. 1 is a schematic plan view showing the semiconductor photodetector according to the first embodiment.
- FIG. 2 is a schematic sectional view taken along the line II-II in FIG. In FIG. 1, illustration of the bump electrode 41 is omitted.
- the semiconductor photodetector PD1 includes a multilayer structure LSI and a glass substrate 1.
- the glass substrate 1 has two main surfaces facing each other, that is, a front surface 121 and a back surface 122.
- the multilayer structure LSI is provided on the back surface 122 of the glass substrate 1.
- the semiconductor photodetector PD1 is a front-illuminated photodetector in which light is incident on the glass substrate 1 with a force on the glass substrate 1 as well.
- the semiconductor photodetector PD1 is, for example, a photodetector for short-range optical communication in a wavelength band of 0.85 m.
- the multilayer structure LSI includes an etching stop layer 2, an n-type (first conductivity type) high-concentration carrier layer 3, an n-type light absorbing layer 5, and an n-type cap layer 7, which are sequentially stacked. Contains.
- the multilayer structure LSI has two main surfaces facing each other, that is, a front surface 101 and a back surface 102. On the front surface 101, a passivation film 19 described later is formed, and on the back surface 102, an electric insulating film (passivation film) 20 is formed.
- the electric insulating film 20 is made of, for example, SiN and has a thickness of about 0.2 m.
- the multilayer structure LSI has a light receiving section 11 and a depression 12 surrounding the light receiving section 11.
- the light receiving section 11 includes an n-type high-concentration carrier layer 3a, an n-type light absorption layer 5a, and an n-type cap layer 7a, and has a mesa shape (a truncated cone in the present embodiment).
- the light receiving section 11 has a p-type (second conductivity type) light receiving region 9.
- the light receiving region 9 includes at least a part of the cap layer 7a. In the present embodiment, a part of the cap layer 7 a and a part of the light absorbing layer 5 are included in the light receiving region 9.
- the top of the light receiving section 11 and the light receiving area 9 have a circular shape when viewed from the light incident direction.
- a depression 13 is formed outside the light receiving area 9 when viewed from the light incident direction.
- the depression 13 is formed in a groove shape so as to reach the high concentration carrier layer 3a and surround the light receiving region 9.
- the light receiving section 11 includes the mesa-shaped inner portion 11a including the light receiving area 9. And an outer part l ib surrounding the inner part 11a.
- the depression 13 is formed in a C-shape so as to be along the edge of the light receiving region 9 and leave a part of the top of the light receiving portion 11 when viewed from the light incident direction.
- a contact electrode 17 is arranged at the bottom of the depression 13. This contact electrode 17 is electrically connected to the high concentration carrier layer 3a. Contact electrode 17 is Au—GeZNiZ
- a passivation film 19 is formed on the surface of the light receiving unit 11, that is, on the surface 101 of the multilayer structure LSI, so as to cover the light receiving region 9.
- the passivation film 19 is made of, for example, SiN
- the notification film 19 functions as an anti-reflection film. Therefore, the thickness of the passivation film 19 is set to ⁇ / (4 ⁇ ), where n is the refractive index of the passivation film 19 and ⁇ is the light receiving wavelength. For example, in the case of a short-range optical communication photodetector having a wavelength band of 0.85 ⁇ m, the thickness of the nomination film 19 is 1000 to 300 OA.
- an anti-reflection film may be formed so as to cover the light receiving region 9 separately from the noise film 19.
- the high-concentration carrier layers 3 and 3a are compound semiconductor layers and have a carrier concentration of 1
- AlGaAs Al composition 0.3
- X 10 18 Zcm 3 The thickness of the high concentration carrier layers 3 and 3a is about 2 ⁇ m.
- the light absorbing layer 5 and 5a is a compound semiconductor layer, for example, a carrier concentration of the GaAs of the order of 1 X lo cm 3.
- the thickness of the light absorbing layers 5 and 5a is about 3 ⁇ m.
- the cap layers 7 and 7a are compound semiconductor layers and are made of, for example, AlGaAs (Al composition ratio 0.3) having a carrier concentration of about 5 ⁇ 10 15 / cm 3 .
- the thickness of the cap layers 7 and 7a is about 0.3 / zm.
- the A1 composition ratio of the cap layers 7 and 7a is preferably set to 0.3 or more.
- the A1 yarn composition ratio X is sufficient if 0.04 is sufficient. More preferably, the A1 composition ratio is 0.3 or more.
- the A1 composition ratio of the cap layers 7 and 7a may be appropriately determined according to the wavelength of light to be detected.
- the light receiving area 9 is provided on the surface 101 of the multilayer structure LSI.
- the light receiving region 9 is formed by thermally diffusing a p-type impurity (for example, Zn) into a desired region of the cap layer 7a and inverting the region to p-type.
- the depth of the light receiving region 9 is about 0, and the diameter of the light receiving region 9 is 5-200 ⁇ .
- the width of the depression (groove) 13 is about 5 ⁇ m.
- the light receiving diameter depends on the characteristics required for the photodetector, and can be designed in a wide range from m to LOmm.
- the first electrode 21 is arranged on the surface 101 of the multilayer structure LSI.
- the first electrode 21 includes a contact electrode 23 and an electrode portion 25a described later.
- the contact electrode 23 is formed in a ring shape on the surface of the light receiving region 9 and is electrically connected to the light receiving region 9.
- the contact electrode 23 is made of TiZPtZAu and has a thickness of about 100Onm.
- the contact electrode 23 may be disposed on the cap layer 7a and the light receiving region 9 other than the force arranged in FIG. 2 so as to be embedded in the light receiving region 9 in the cap layer 7a. .
- the first wiring electrode 25 is electrically connected to the contact electrode 23.
- the first wiring electrode 25 partially covers the light receiving portion 11 and the depression 12 and is disposed on the noise film 19.
- the first wiring electrode 25 has an electrode portion 25a disposed on the top of the light receiving section 11, and an electrode portion 25b disposed in the depression 12.
- the first wiring electrode 25 is made of Ti / PtZAu, and has a thickness of about 1.
- the electrode portion 25a located on the light receiving portion 11 is arranged on the contact electrode 23 so that at least a part of the light receiving region 9 is exposed, and has an annular shape.
- the electrode portion 25a is connected to the contact electrode 23 through a contact hole 19a formed in the nomination film 19.
- a first pad electrode 27 is arranged as a second electrode.
- the first pad electrode 27 is made of TiZPtZAu and has a thickness of about 1.5 m.
- the first pad electrode 27 is electrically connected to the first wiring electrode 25 (electrode portion 25b) via a contact hole 29 penetrating through the electric insulating film 20, the etching stop layer 2, and the passivation film 19.
- the contact electrode 23 is electrically connected to the first pad electrode 27 via the first wiring electrode 25.
- a bump electrode 41 is provided on the first pad electrode 27, a bump electrode 41 is provided.
- the third electrode 31 is disposed on the back surface 102 of the multilayer structure LSI.
- the third electrode 31 includes a second pad electrode 33 and a second wiring electrode 35.
- the second pad electrode 33 and the second wiring electrode 35 have a TiZPtZAu force, and their thickness is about 1.
- the second pad electrode 33 is electrically connected to the high-concentration carrier layer 3a and the contact electrode 17 via a contact hole 37 that penetrates the electric insulating film 20, the etching stop layer 2, and the high-concentration carrier layer 3.
- the second wiring electrode 35 is formed below the back surface of the light receiving region 9 so as to cover the back surface, and functions as a light reflection film. Note that a light reflection film may be formed below the light receiving region 9 separately from the second wiring electrode 35.
- a bump electrode 41 is arranged on the second pad electrode 33 as well as the first pad electrode 27, a bump electrode 41 is arranged.
- the extraction of the electrode from the light receiving region 9 is realized by the contact electrode 23, the first wiring electrode 25, the first pad electrode 27, and the bump electrode 41.
- Extraction of the electrode from the high-concentration carrier layer 3a is realized by the contact electrode 17, the second pad electrode 33, and the bump electrode 41.
- a film 10 is formed so as to cover the light receiving region 9 and the first electrode 21 (the electrode portion 25a of the contact electrode 23 and the first wiring electrode 25).
- the film 10 is made of silicon oxide (SiO 2) and is optically transparent to incident light. Out of membrane 10
- the surface 10a opposite to the multilayer structure LSI is flattened.
- the thickness of the film 10 is about 3 to: LO / zm.
- the glass substrate 1 is bonded in contact with the surface 10 a of the film 10.
- the glass substrate 1 has a thickness of about 0.3 mm and is optically transparent to incident light.
- FIGS. 3 to 15 are diagrams for explaining this manufacturing method, and show a vertical cross section of the semiconductor photodetector PD1.
- this manufacturing method the following steps (1) to (13) are sequentially performed.
- a semiconductor substrate 51 is prepared.
- the semiconductor substrate 51 is made of, for example, n-type GaAs having a thickness of 300 to 500 ⁇ m and a carrier concentration of about 1 ⁇ 10 18 Zcm 3 .
- a buffer is formed on one main surface (front surface) 111 of the semiconductor substrate 51 by hydride vapor phase epitaxy, chloride vapor phase epitaxy, metal organic chemical vapor deposition (MOCVD), molecular beam epitaxy (MBE), or the like.
- Layer 53 and etch stop layer 2 are grown sequentially and stacked (see FIG. 3).
- the n-type high-concentration carrier layer 3, the n-type light absorbing layer 5, and the n-type are formed on the etching stop layer 2 by hydride vapor phase epitaxy, chloride vapor phase epitaxy, MOCVD, MBE, or the like.
- the cap layers 7 are sequentially grown and stacked (see FIG. 3).
- the buffer layer 53 is made of non-doped GaAs, and has a thickness of about 0.05 ⁇ m.
- the etching stop layer 2 is made of non-doped AlGaAs (Al thread 0.5) and has a thickness of about 1. O / zm.
- the etching stop layer 2 is formed so as to be located between the semiconductor substrate 51 and the high-concentration carrier layer 3.
- the A1 composition ratio of the etching stopper layer 2 is preferably set to 0.4 or more. This is because AlGaAs having an A1 composition ratio of 0.4 or more is difficult to be etched by an etchant used for etching GaAs described later.
- the multilayer structure LSI and the buffer layer 53 are formed on the surface 111 of the semiconductor substrate 51.
- An opening 55a is provided at a position where the light receiving region 9 is to be formed by performing nottering (see FIG. 4). After that, using the patterned film 55 as a mask, impurities (for example, Zn) are thermally diffused into the cap layer 7 to invert the conductivity type of a part of the cap layer 7 to p-type. In this way, the light receiving region 9 is formed in the multilayer structure LSI near the surface 101 far from the semiconductor substrate 51 (see FIG. 4). Thereafter, the film 55 is removed with buffered hydrofluoric acid (BHF).
- BHF buffered hydrofluoric acid
- a resist film 56 having an opening 56 a at a position where the depression 13 is to be formed is formed on the cap layer 7.
- the resist film 56 can be formed using a photolithography method. Then, using the resist film 56 as a mask, a highly concentrated mixture of Br and methanol is used.
- a resist film 57 having an opening 57a at a position where the depression 12 is to be formed is capped. Formed on layer 7.
- the resist film 57 can be formed using a photolithography method. Then, using the resist film 57 as a mask, a mixture of Br and methanol is used as a mask.
- the light receiving section 11 is formed in a mesa shape (see FIG. 6). That is, the light receiving section 11 includes the high concentration carrier layer 3a, the light absorbing layer 5a, and the cap layer 7a.
- the resist film 57 is arranged above the outer portion lib, it is possible to appropriately control the progress of etching not only in the depth direction but also in the lateral direction, thereby forming the depression 13 and Thus, the formation of the light receiving section 11 can be appropriately performed. As a result, the yield in manufacturing the semiconductor photodetector PD1 can be increased. Thereafter, the resist film 57 is removed.
- a resist film (not shown) having an opening at a position corresponding to the depression 13 is formed.
- a contact electrode 17 having Au—GeZNiZAu force is formed on the high-concentration carrier layer 3 (3a) exposed by the formation of the depression 13 by vapor deposition using this resist film as a mask and a lift-off method (see FIG. 7).
- the resist film is formed again so as to have an opening at a position where the contact electrode 23 is to be formed, and the contact electrode 23 having a TiZPtZAu force is received by vapor deposition and a lift-off method using the resist film as a mask. Formed in region 9 (see Figure 7).
- the resist film is removed.
- the contact electrode 23 is formed so as to be embedded in the light receiving region 9 in the cap layer 7a in FIG. 7, but is not limited to this, and is formed on the surface of the cap layer 7a and the light receiving region 9. It may be.
- a passive base made of SiN is formed on the surface 101 of the multilayer structure LSI by the PCVD method.
- the film 19 is formed. Then, a resist film (not shown) having an opening located above the contact electrodes 17 and 23 is formed, and using the resist film as a mask, a contact hole 19a is formed in the noise film 19. (See Figure 8). Subsequently, the resist film is removed.
- a resist film (not shown) having an opening at a position corresponding to the first wiring electrode 25 is formed.
- a first wiring electrode 25 made of Ti / Pt / Au is formed by a lift-off method (see FIG. 9).
- the first electrode 21 is formed on the surface 101 side of the multilayered structure LSI.
- the resist film is removed. Thereafter, sintering is performed under an H atmosphere.
- a film 10 is formed on the surface 101 of the multilayer structure LSI so as to cover the light receiving region 9 and the first electrode 21 and is flattened (see FIG. 10).
- the surface 10 Oa of the film 10 located on the opposite side of the multilayer structure LSI is flattened as the surface of the structure including the multilayer structure LS 1 and the semiconductor substrate 51.
- the film 10 can be formed by using a plasma chemical vapor deposition (PCVD) method or a coating method.
- PCVD plasma chemical vapor deposition
- “flat” does not necessarily mean that there is no unevenness at all.
- the glass substrate 1 and the semiconductor substrate 51 are overlapped with the film 10 therebetween, and both are pressed and heated, so that the surface of the glass substrate 1 and the surface 10a of the film 10 come into contact with each other. If the glass substrate 1 and the film 10 are fused together in a state in which the glass substrate 1 is bonded, slight irregularities may be present.
- the glass substrate 1 is bonded to the semiconductor substrate 51 on which the multilayer structure LS1, the buffer layer 53, and the film 10 are formed (see FIG. 11).
- the glass substrate 1 is prepared, and one main surface (back surface) 122 of the glass substrate 1 is cleaned.
- the glass substrate 1 and the semiconductor substrate 51 are overlapped so that the cleaned back surface 122 of the glass substrate 1 and the surface 10a of the film 10 are in contact with each other.
- the superposed glass substrate 1 and semiconductor substrate 51 are pressurized and heated, and the glass substrate 1 and the film 10 are bonded together by fusing each other.
- the pressure at which the glass substrate 1 and the semiconductor substrate 51 are superimposed is about 98 kPa, and the heating temperature is preferably 500 to 700 ° C. Since the uppermost film 10 on the semiconductor substrate 51 is made of silicon oxide, by applying pressure and heating under such conditions, the surface 10a of the film 10 is fused to the rear surface 122 of the glass substrate 1 to form a multilayer structure. The body LS 1 and the semiconductor substrate 51 are fixed to the glass substrate 1.
- the back surface 122 of the glass substrate 1 is squeezed with force. It is desirable that the surface 10a of the peeling film 10 is also clean. For this purpose, for example, it is advisable to perform a fusing operation immediately after taking out the semiconductor substrate 51 from the PCVD apparatus having the film 10 formed thereon.
- the glass substrate used preferably has a thermal expansion coefficient close to that of GaAs. As a result, in the cooling step after heating, the stress generated between the semiconductor substrate 51 and the glass substrate 1 due to the difference in the thermal expansion coefficient can be reduced as much as possible. Can be minimized.
- the semiconductor substrate 51 is removed. After the multilayer structure LSI and the semiconductor substrate 51 are fixed to the glass substrate 1, the main surface of the semiconductor substrate 51 located on the opposite side to the glass substrate 1, that is, the back surface 112 is exposed. In this step, etching is performed from the back surface 112 side of the semiconductor substrate 51 to remove the semiconductor substrate 51 and the buffer layer 53 (see FIG. 12).
- the semiconductor substrate 51 and the buffer layer 53 are removed by using an etching solution with a lower etching rate than the etching stopper layer 2. Thereby, the glass substrate 1 on which the multilayer structure LSI is mounted is obtained.
- the etching solution used is ammonia water (NH
- the bonded glass substrate 1 and semiconductor substrate 51 are mixed together with a mixed solution of NH OH and H 2 O.
- the semiconductor substrate 51 is etched from the back side.
- the etching stop layer 2 is exposed in the etching solution.
- the etching rate becomes very slow. Therefore, the etching stops automatically when the etching stop layer 2 is exposed. Thus, the semiconductor substrate 51 and the buffer layer 53 are removed. Note that the semiconductor substrate 51 and the buffer layer 53 may be removed by chemical mechanical polishing (CMP) instead of etching.
- CMP chemical mechanical polishing
- An edge film 20 is formed (see FIG. 13).
- Step (12) a resist film (not shown) having an opening at a position where the contact hole 37 is to be formed is formed on the electric insulating film 20. Then, using this resist film as a mask, the electrical insulating film 20, the etching stop layer 2, and the high-concentration carrier layer 3 are etched (wet-etched) until the contact electrode 17 is exposed. As a result, a contact hole 37 is formed (see FIG. 14).
- the etching solution used is buffered hydrofluoric acid (BHF) for the electrical insulating film 20, hydrochloric acid (HC1) for the etching stopper layer 2, and ammonia water (NH1) for the high-concentration carrier layer 3. OH) and mixed solution of hydrogen peroxide (HO 2)
- a resist film (not shown) having an opening at a position where the contact hole 29 is to be formed is formed on the electric insulating film 20. Then, using this resist film as a mask, the electric insulating film 20, the etching stop layer 2, and the passivation film 19 are etched (wet-etched) until the first wiring electrode 25 (electrode portion 25b) is exposed. Thereby, a contact hole 29 is formed (see FIG. 14).
- the etching solution used is buffered hydrofluoric acid (BHF) for the electric insulating film 20, hydrochloric acid (HC1) for the etching stop layer 2, and buffered hydrofluoric acid (BHF) for the passivation film 19. Is preferred. Subsequently, the resist film is removed.
- a resist film (not shown) having openings at positions corresponding to the first pad electrode 27, the second pad electrode 33, and the second wiring electrode 35 is formed. Then, using this resist film as a mask, a first pad electrode 27, a second pad electrode 33, and a second wiring electrode 35 which also have TiZPtZAu force are formed by a lift-off method (see FIG. 15). At this time, the second wiring electrode 35 is formed so as to cover the back surface of the light receiving region 9 (the surface opposite to the light incident surface). Here, the second node electrode 33 and the second wiring electrode 35 are formed integrally. Subsequently, the resist film is removed. Thereafter, sintering is performed under an H atmosphere. Note that the second pad electrode 33 and the second
- the two wiring electrodes 35 are formed integrally, the present invention is not limited to this, and they may be formed separately.
- the bump electrode 41 is obtained by forming solder on the first pad electrode (second electrode) 27 and the second pad electrode 33 by a plating method, a solder ball mounting method, or a printing method, and performing reflow. Can be.
- the bump electrode 41 is not limited to solder, and may be a conductive resin bump containing a metal such as a conductive bumper such as a gold bump, a nickel bump, or a copper bump.
- the multilayered structure LSI (the high-concentration carrier layer 3, the light-absorbing layer 5, and the cap layer 7 ) Is maintained by the glass substrate 1 and the film 10. Also, unlike the conventional semiconductor photodetector, it is not necessary to form a portion maintaining the thickness of the substrate, so that the semiconductor photodetector PD1 can be easily miniaturized.
- the semiconductor photodetector PD1 can be mounted with the back surface 102 (the main surface opposite to the front surface 101 on which the light receiving region 9 is arranged) facing a mounting surface such as an external substrate. Therefore, the semiconductor photodetector PD1 can be easily mounted.
- the glass substrate 1 can be bonded to the multilayer structure LSI without using an adhesive.
- the silicon oxide constituting the film 10 is, like the glass substrate 1, optically transparent to light to be detected. Therefore, the incident light passing through the glass substrate 1 can reach the multilayer structure LSI (light receiving region 9) without being absorbed by the adhesive. As a result, a decrease in photodetection sensitivity can be prevented.
- the light receiving section 11 has a mesa structure including the high-concentration carrier layer 3a, the light absorbing layer 5a, the cap layer 7a, and the light receiving region 9, whereby the surrounding semiconductor layer power is also separated. Thereby, the parasitic capacitance can be further reduced.
- the first electrode 21 (the contact electrode 23 and the electrode portion 25a of the first wiring electrode 25) is an electrode portion of the first wiring electrode 25 located in the recess 12 formed so as to surround the light receiving portion 11. 25b, it is electrically connected to the first pad electrode (second electrode) 27.
- the third electrode 31 (the second pad electrode 33 and the second wiring electrode 35) is provided with a high-concentration carrier layer included in the light receiving section 11. Electrically connected to part 3a.
- the electrode portion 25b in the depression 12 can be used as a part of the through electrode penetrating the multilayered structure LSI, so that the through electrode can be formed extremely easily. Further, by using a wet etching technique as a method of forming the contact hole 29, the semiconductor photodetector PD1 can be manufactured at low cost and with high yield.
- the series resistance can be significantly reduced.
- a second wiring electrode 35 that covers the light receiving region 9 is formed on the back surface 102 of the multilayer structure LSI. For this reason, light that has passed through the light absorption layer 5a without being absorbed is reflected by the second wiring electrode 35, and is again incident on the light absorption layer 5a and absorbed, so that the light sensitivity can be further enhanced.
- the film 10 covering the light receiving region 9 and the first electrode 21 is formed on the front surface 101 of the multilayer structure LSI, and the surface 10 a of the film 10 is The semiconductor substrate 51 is removed after the glass substrate 1 is bonded to the film 10 so as to be in contact with the semiconductor substrate 51.
- the semiconductor photodetector PD1 having a structure in which the glass substrate 1 is bonded to the surface 101 of the multilayer structure LSI via the film 10 can be easily manufactured.
- the mechanical strength of the multilayer structure LSI is maintained by the glass substrate 1 and the film 10 even in the subsequent manufacturing process. It is. Before bonding the glass substrate 1, the mechanical strength of the multilayer structure LSI is maintained by the semiconductor substrate 51.
- an etching stop layer 2 for stopping wet etching is formed between the semiconductor substrate 51 and the high-concentration carrier layer 3. Therefore, the semiconductor substrate 51 can be selectively removed by using an etching solution while the etching stop layer 2 cannot be etched. Therefore, the semiconductor substrate 51 can be reliably and easily removed while leaving the high-concentration carrier layer 3, the light absorption layer 5, and the cap layer 7.
- FIG. 16 is a schematic cross-sectional view illustrating a configuration of a semiconductor photodetector according to the second embodiment.
- This semiconductor photodetector PD2 is different from the glass substrate 1 in that a lens portion 121a is formed. This is different from the semiconductor photodetector PD1 according to the first embodiment.
- the semiconductor photodetector PD2 includes a multilayer structure LSI and a glass substrate 1.
- the semiconductor photodetector PD2 is a surface-incident type photodetector in which light also enters the multi-layer structure LSI with the force on the glass substrate 1 side. Further, the semiconductor photodetector PD2 has, for example, a wavelength band of 0.
- a lens portion 121a for condensing incident light is formed on the surface 121 of the glass substrate 1.
- Another part 121b in the surface 121 is higher than the lens part 121a. That is, this lens section
- 121a is more concave than the highest part 121b in the surface 121.
- FIG. 7 is a view for explaining this manufacturing method, and shows a longitudinal section of the semiconductor photodetector PD2.
- Steps (1) to (13) are sequentially performed.
- Steps (1) to (8) are the same as steps (1) to (8) in the first embodiment, and a description thereof will not be repeated.
- the glass substrate 1 is bonded to the semiconductor substrate 51 on which the multilayer structure LS1, the buffer layer 53, and the film 10 are formed (see FIG. 17).
- the bonding method is the same as step (9) in the first embodiment. Specifically, a glass substrate 1 having a lens portion 121a formed on a front surface 121 is provided, and a rear surface 122 of the glass substrate 1 is cleaned. Next, the glass substrate 1 and the semiconductor substrate 51 are overlapped so that the cleaned back surface 122 and the surface 10a of the film 10 farther from the multilayer structure LSI are in contact with each other. Subsequently, the superposed glass substrate 1 and the semiconductor substrate 51 are pressurized and heated, and the glass substrate 1 and the film 10 are bonded together by fusing each other. The details of the bonding method are the same as those in the step (9) in the first embodiment.
- the alignment between the light receiving region 9 on the semiconductor substrate 51 and the lens portion 121a on the glass substrate 1 was performed by providing a marker on the rear surface 122 side of the glass substrate 1 and using a double-sided exposure machine. This can be easily performed based on the marker. Instead of adding a marker, the outer shape of the lens section 12 la may be used as a marker!
- Steps (10) to (13) are the same as steps (10) to (13) in the first embodiment, and a description thereof will not be repeated.
- steps (1) to (13) the semiconductor having the structure shown in FIG.
- the photodetector PD2 is completed.
- the mechanical strength of the multilayered structure LSI (the stacked high-concentration carrier layer 3, the light absorbing layer 5, and the cap layer 7) is the same as that of the first embodiment described above.
- the miniaturization of the semiconductor photodetector PD2 is easy.
- the semiconductor photodetector PD2 can be easily mounted.
- the lens portion 121a is provided on the glass substrate 1, even when the light receiving area 9 is smaller than the irradiation range of the incident light, the incident light is efficiently received. As a result, a highly reliable semiconductor photodetector PD2 having an excellent SN ratio can be obtained.
- the lens portion 121a is formed so as to be recessed from the highest portion 121b in the surface 121 of the glass substrate 1. For this reason, the glass substrate 1 on which the lens portion 121a is formed can be easily bonded to the multilayer structure LSI. In addition, since the lens portion 12 la can be removed before bonding, there is a high degree of freedom in lens design such as a lens shape that is less subject to processing methods.
- the lens part 121a may be formed after the glass substrate 1 is bonded to the semiconductor substrate 51 on which the multilayer structure LSI and the film 10 are mounted. However, in consideration of the degree of freedom in lens design, it is preferable that the glass substrate 1 on which the lens portion 121a is formed in advance be bonded to the semiconductor substrate 51.
- FIG. 18 is a schematic sectional view showing the configuration of the semiconductor photodetector according to the third embodiment.
- the semiconductor photodetector PD3 according to the first embodiment is different from the semiconductor photodetector PD3 in that the semiconductor photodetector PD3 has a film made of silicon oxide (SiO 2) or resin instead of the glass substrate 1 and the film 10.
- the semiconductor photodetector PD3 includes a multilayer structure LSI and a film 60.
- the membrane 60 has two main surfaces facing each other, namely a front surface 131 and a back surface 132.
- the multilayer structure LSI is provided on the back surface 132 of the film 60.
- This semiconductor photodetector PD3 is a front-illuminated type photodetector in which light also enters the multilayer structure LSI with the force on the film 60 side.
- the semiconductor photodetector PD3 is, for example, a photodetector for short-range optical communication in a wavelength band of 0.85 m.
- a film 60 is formed on the surface 101 of the multilayer structure LSI so as to cover the light receiving region 9 and the first electrode 21 (the electrode portion 25a of the contact electrode 23 and the first wiring electrode 25).
- the film 60 is made of silicon oxide or resin (for example, polyimide resin, PMMA, epoxy resin, etc.).
- the film 60 has a thickness of about 50 m and is optically transparent to incident light.
- FIGS. 19 and 20 are views for explaining this manufacturing method, and show vertical sections of the semiconductor photodetector PD3.
- Steps (1) to (12) are sequentially performed. Steps (1) to (7) are the same as steps (1) to (7) in the first embodiment, and a description thereof will not be repeated.
- a film 60 is formed on the surface 101 of the multilayer structure LSI so as to cover the light receiving region 9 and the first electrode 21 (see FIG. 19).
- the film 60 may be formed, for example, by using TEOS (film forming gas) for forming a silicon oxidizing film (SiO 2).
- a PCVD method using Tetraethylorthosilicate can be used. Further, when the film 60 has a high lubricating power, for example, a coating method can be used for forming the film 60.
- the semiconductor substrate 51 is removed. After the formation of the film 60, the back surface 112 of the semiconductor substrate 51 located on the opposite side of the film 60 is exposed. In this step, the semiconductor substrate 51 and the buffer layer 53 are removed from the back surface 112 side of the semiconductor substrate 51 by etching (see FIG. 20).
- the etching method of the semiconductor substrate 51 and the buffer layer 53 is the same as the etching method of the step (10) in the first embodiment.
- Steps (10) to (12) are the same as steps (11) to (13) in the first embodiment, and a description thereof will not be repeated. Through these steps (1) to (12), the semiconductor photodetector PD3 having the structure shown in FIG. 18 is completed.
- the mechanical strength of the multilayered structure LSI (the stacked high concentration carrier layer 3, light absorbing layer 5, and cap layer 7) is maintained by the film 60.
- a semiconductor photodetector PD3 can be easily mounted.
- FIG. 21 is a schematic sectional view showing the configuration of the semiconductor photodetector according to the fourth embodiment.
- the semiconductor photodetector PD4 differs from the semiconductor photodetector PD3 according to the third embodiment in that a lens portion 131a is formed on the film 60.
- the semiconductor photodetector PD4 includes a multilayer structure LSI and a film 60.
- the semiconductor photodetector PD4 is a front-illuminated type photodetector in which light enters the multilayer structure LSI from the film 60 side.
- the semiconductor photodetector PD4 is, for example, a photodetector for short-distance optical communication in a wavelength band of 0.85 m.
- a lens portion 13la for condensing incident light is formed on the surface 131 of the film 60.
- the lens portion 131a can be formed by wet etching. For example, as shown in FIG. 22, a resist film 63 having an opening 63a at a desired position is formed on the surface 131 of the film 60. Then, as shown in FIG. 23, the film 60 is wet-etched using the resist film 63 as a mask. In wet etching, since the etching proceeds isotropically, a lens portion 13 la having a lens effect is formed by properly aligning the opening 63 a of the resist film 63 with the light receiving region 9. .
- the mechanical strength of the multilayered structure LSI (the stacked high-concentration carrier layer 3, light absorption layer 5, and cap layer 7) is maintained by the film 60.
- the semiconductor photodetector PD4 can be easily mounted.
- the lens portion 131a is formed on the film 60, even when the light receiving area 9 is smaller than the irradiation range of the incident light, the incident light is efficiently received. As a result, a highly reliable semiconductor photodetector PD4 having an excellent SN ratio can be obtained.
- FIG. 24 is a schematic plan view showing a semiconductor photodetector according to the fifth embodiment.
- FIG. 25 is a schematic sectional view taken along line XXV-XXV in FIG. In FIG. 24, illustration of the bump electrode 41 is omitted.
- the semiconductor photodetector PD5 includes a multilayer structure LS2 and a glass substrate 1.
- multilayer The structure LS2 is provided on the back surface 122 of the glass substrate 1.
- the semiconductor photodetector PD5 is a front-illuminated photodetector in which light also enters the multilayer structure LS2 on the glass substrate 1 side.
- the semiconductor photodetector PD5 is, for example, a short-range optical communication photodetector having a wavelength band of 0.85 m.
- the multilayer structure LS2 includes an n-type (first conductivity type) high-concentration carrier layer 3, an n-type light absorption layer 5, and an n-type cap layer 7, which are sequentially stacked.
- the multilayer structure LS2 has two main surfaces facing each other, that is, a front surface 103 and a back surface 104.
- a p-type (second conductivity type) light receiving region 9 is formed on the cap layer 7a.
- a nomination film 19 is formed on the surface 103 of the multilayer structure LS2.
- the electric insulating film 20 is formed on the back surface 104 of the multilayer structure LS2.
- a contact electrode 71 as a first electrode is disposed on the passivation film 19.
- the contact electrode 71 is electrically connected to the light receiving region 9 through a contact hole 19a formed in the passivation film 19.
- the contact electrode 71 is made of TiZPtZAu and has a thickness of about 1.5 ⁇ m.
- a through hole TH extending from the front surface 103 to the back surface 104 is formed.
- the electric insulating film 20 also extends on the wall surface of the multilayer structure LS2 defining the through hole TH.
- a through wiring 73 is provided inside the electric insulating film 20 in the through hole TH.
- One end 73a of the through wiring 73 is electrically connected to the contact electrode 71 through a contact hole 20a formed on the electric insulating film 20.
- a first pad electrode 27 (second electrode) and a third electrode 81 are arranged on the back surface 104 of the multilayer structure LS2.
- the first pad electrode 27 is formed so as to cover the through wiring 73, and is electrically connected to the end 73b of the through wiring 73 opposite to the end 73a.
- a bump electrode 41 is arranged on the first pad electrode 27, arranged. The extraction of the electrode from the light receiving region 9 is realized by the contact electrode 71, the through wiring 73, the first pad electrode 27, and the bump electrode 41.
- the third electrode 81 includes a contact electrode 83, a second pad electrode 33, and a second wiring electrode 35.
- the contact electrode 83 is electrically connected to the high-concentration carrier layer 3 through a contact hole 20b formed in the electric insulating film 20.
- the second pad electrode 33 and the second The line electrode 35 is formed so as to cover the contact electrode 83, and is electrically connected to the contact electrode 83.
- the second pad electrode 33 has the same bump electrode as the first pad electrode 27.
- the second wiring electrode 35 is formed below the back surface of the light receiving region 9 so as to cover the back surface, and functions as a light reflection film.
- a light reflection film may be formed below the light receiving region 9 separately from the second wiring electrode 35.
- a film 10 is formed on the upper surface 103 of the multilayer structure LS2 so as to cover the light receiving region 9 and the contact electrode 71.
- the glass substrate 1 is bonded in contact with a surface 10a of the film 10 opposite to the multilayer structure LS2.
- the glass substrate 1 has a thickness of about 0.3 mm and is optically transparent to incident light.
- FIGS. 26 to 32 are views for explaining a method for manufacturing the semiconductor photodetector PD5, and show a longitudinal section of the semiconductor photodetector PD5.
- the surface 103 of the cap layer 7 (multilayer structure LS2) is made of SiN by the PCVD method.
- a nomination film 19 is formed (see FIG. 26).
- a resist film (not shown) having an opening at a position corresponding to the contact electrode 71 is formed, and the passivation film 19 is removed using buffered hydrofluoric acid (BHF) using the resist film as a mask.
- BHF buffered hydrofluoric acid
- a contact hole 19a is formed in the passivation film 19 (see FIG. 27). Subsequently, the resist film is removed.
- a resist film (not shown) having an opening at a position corresponding to contact hole 19a is formed again. Then, using this resist film as a mask, a contact electrode 71 made of TiZPtZAu is formed by vapor deposition and a lift-off method on a portion of the light receiving region 9 exposed by the contact hole 19a (see also FIG. 27). Then, the resist film Remove.
- a film 10 is formed on the surface 103 side of the multilayer structure LS2 so as to cover the light receiving region 9 (passivation film 19) and the contact electrode 71, and is flattened (see FIG. 28).
- the surface 10a of the film 10 located on the opposite side of the multilayer structure LS2 is flattened as the surface of the structure including the multilayer structure LS2 and the semiconductor substrate 51.
- the method for forming the film 10 is the same as the method for forming the step (8) in the first embodiment.
- the glass substrate 1 is bonded to the semiconductor substrate 51 on which the multilayer structure LS2, the etching stopper layer 2, and the film 10 are formed (see FIG. 29).
- the bonding method of the glass substrate 1 is the same as the bonding method of the step (9) in the first embodiment.
- the semiconductor substrate 51 is removed. After the glass substrate 1 and the semiconductor substrate 51 are bonded, the main surface (back surface) 112 of the semiconductor substrate 51 located on the opposite side of the glass substrate 1 is exposed. In this step, the force on the back surface 112 of the semiconductor substrate 51 is also etched to remove the semiconductor substrate 51, the buffer layer 53, and the etching stop layer 2 (see FIG. 30).
- the semiconductor substrate 51 and the buffer layer 53 are removed using an etching solution having a low etching rate with respect to the etching stopper layer 2.
- the etching stop layer 2 can be etched, and the etching stop layer 2 is removed using an etching solution having a low etching rate for the AlGaAs layer of the high-concentration carrier layer 3.
- the glass substrate 1 on which the multilayer structure LS2 is mounted is obtained.
- the glass substrate 1 on which the etching stop layer 2 and the multilayer structure LS2 are left is taken out of a mixed solution of NH 4 OH and H 2 O, and
- H PO phosphoric acid
- H O hydrogen peroxide
- AlGaAs is a mixed solution of phosphoric acid, hydrogen peroxide and water.
- the semiconductor substrate 51, the buffer layer 53, and the etching stopper layer 2 may be removed by mechanical polishing (CMP)!
- a resist film (not shown) having an opening at a position where the through hole TH is to be formed is formed on the high concentration carrier layer 3. Then, using the resist film as a mask, the multilayer structure LS2 and the passivation film 19 are etched (dry-etched) until the contact electrode 71 is exposed. As a result, a through hole TH is formed (see FIG. 31). Subsequently, the resist film is removed. This dry etching is etching of about several / zm and can be performed very easily.
- the electric insulating film 20 which also has SiN force is formed on the surface of the high concentration carrier layer 3 by the PCVD method.
- the electric insulating film 20 is also formed on the wall surface of the multilayer structure LS2 that defines the through hole TH.
- a resist film (not shown) having an opening at a position corresponding to the contact electrode 83 is formed on the electric insulating film 20. Then, using this resist film as a mask, the electrical insulating film 20 is removed by BHF, and a contact hole 20b is formed in the electrical insulating film 20 (see also FIG. 31). Subsequently, the resist film is removed.
- a resist film (not shown) having an opening at a position corresponding to contact electrode 83 is formed. Then, using this resist film as a mask, a contact electrode 83 made of Ti / Pt / Au is formed by a lift-off method (see also FIG. 31). Subsequently, the resist film is removed.
- a resist film (not shown) having an opening at a position corresponding to the through wiring 73 and the first pad electrode 27 is formed on the electric insulating film 20. Then, using this resist film as a mask, the electrical insulating film 20 is removed by BHF to form a contact hole 20a in the electrical insulating film 20 (see FIG. 32). As a result, the contact electrode 71 is exposed. Subsequently, the resist film is removed. Next, a resist film (not shown) having openings at positions corresponding to the first pad electrode 27 (through wiring 73), the second pad electrode 33, and the second wiring electrode 35 is formed.
- the first pad electrode 27 (through wiring 73), the second pad electrode 33, and the second wiring electrode 35 which also have TiZPtZAu force are formed by lift-off method (see FIG. 32). .
- the first pad electrode 27 and the through wiring 73 are formed integrally.
- the second pad electrode 33 and the second wiring electrode 35 are formed integrally.
- the resist film is removed. Thereafter, sintering is performed under an H atmosphere. Note that the first pad electrode 27
- the through-hole 73 are integrally formed.
- the present invention is not limited to this.
- the present invention is not limited to this.
- the mechanical strength of the multilayer structure LS2 (the stacked high-concentration carrier layer 3, light absorbing layer 5, and cap layer 7) is the same as that of the glass substrate 1 and the glass substrate 1.
- the semiconductor photodetector PD5 can be easily miniaturized.
- the semiconductor photodetector PD5 can be easily mounted.
- the contact electrode 71 is electrically connected to the first pad electrode 27 via the through-hole 73 penetrating through the multilayer structure LS2.
- the contact electrode 71 can be reliably conducted to the first pad electrode 27.
- the second pad electrode 33 is electrically connected to the high-concentration carrier layer 3. Since the electrode is directly drawn out of the high-concentration carrier layer 3, the series resistance can be significantly reduced.
- the etching stop layer 2 is removed by wet etching.
- this wet etching only the etching stop layer 2 is selectively removed by using an etching liquid that can etch the etching stop layer 2 and cannot etch the high-concentration carrier layer 3. Therefore, the etching stop layer 2 can be reliably and easily removed while leaving the multilayer structure LS2.
- FIG. 33 is a schematic sectional view showing the configuration of the semiconductor photodetector according to the sixth embodiment.
- This semiconductor photodetector PD6 differs from the semiconductor photodetector PD5 according to the fifth embodiment in that a lens portion 121a is formed on the glass substrate 1.
- the semiconductor photodetector PD6 includes the multilayer structure LS2 and the glass substrate 1. This semiconductor photodetector PD6 is a surface-incident type photodetector in which light also enters the multilayer structure LS2 on the glass substrate 1 side.
- the semiconductor photodetector PD6 has, for example, a wavelength band of 0.
- a lens portion 121a for condensing incident light is formed on the surface 121 of the glass substrate 1.
- Another part 121b in the surface 121 is higher than the lens part 121a. That is, this lens section
- 121a is more concave than the highest part 121b in the surface 121.
- FIG. 4 is a view for explaining this manufacturing method, and shows a longitudinal section of the semiconductor photodetector PD6.
- Steps (1) to (10) are sequentially performed. Steps (1) to (5) are the same as steps (1) to (5) in the fifth embodiment, and a description thereof will not be repeated.
- the glass substrate 1 is bonded to the semiconductor substrate 51 on which the multilayer structure LS2, the etching stopper layer 2, and the film 10 are formed (see FIG. 34). Specifically, a glass substrate 1 having a lens portion 121a formed on a front surface 121 is prepared, and a rear surface 122 of the glass substrate 1 is cleaned. Next, the glass substrate 1 and the semiconductor substrate 51 are overlapped so that the purified rear surface 122 and the surface 10a of the film 10 farther from the multilayer structure LS2 are in contact with each other. Subsequently, the laminated glass substrate 1 and semiconductor substrate 51 are pressed and heated, and the glass substrate 1 and the film 10 are bonded to each other by fusing each other. The details of this bonding method are the same as step (9) in the first embodiment.
- Steps (7) to (10) are the same as steps (7) to (13) in the fifth embodiment, and a description thereof will not be repeated.
- steps (1) to (10) the semiconductor photodetector PD6 having the structure shown in FIG. 33 is completed.
- the same multilayer structure LS2 (laminated high The mechanical strength of the concentration carrier layer 3, the light absorption layer 5, and the cap layer 7) is maintained by the glass substrate 1 and the film 10, and the semiconductor photodetector PD6 can be easily miniaturized. In addition, the semiconductor photodetector PD6 can be easily mounted.
- lens portion 121a is provided on glass substrate 1, incident light can be efficiently received even when light receiving area 9 is smaller than the irradiation range of incident light. As a result, a highly reliable semiconductor photodetector PD6 having an excellent SN ratio can be obtained.
- FIG. 35 is a schematic sectional view showing the configuration of the semiconductor photodetector according to the seventh embodiment.
- the semiconductor photodetector PD7 according to the fifth embodiment is different from the semiconductor photodetector PD5 in that the semiconductor photodetector PD7 has a film made of silicon oxide (SiO 2) or resin instead of the glass substrate 1 and the film 10.
- the semiconductor photodetector PD7 includes a multilayer structure LS2 and a film 60.
- the membrane 60 has two main surfaces facing each other, a front surface 131 and a back surface 132.
- the multilayer structure LSI is provided on the back surface 132 of the film 60.
- the semiconductor photodetector PD7 is a front-illuminated photodetector in which light also enters the multilayer structure LS2 with a force on the film 60 side.
- the semiconductor photodetector PD7 is, for example, a photodetector for short-range optical communication in a wavelength band of 0.85 m.
- a film 60 is formed on the surface 103 of the multilayer structure LS2 so as to cover the light receiving region 9 and the contact electrode 71.
- the film 60 is made of silicon oxide or resin (for example, polyimide resin, PMMA, epoxy resin, or the like).
- the film 60 has a thickness of about 50 ⁇ m and is optically transparent to incident light.
- FIGS. 36 and 37 are views for explaining this manufacturing method, and show vertical sections of the semiconductor photodetector PD7.
- Steps (1) to (9) are sequentially performed.
- Steps (1) to (4) are the same as steps (1) to (4) in the fifth embodiment, and a description thereof will not be repeated.
- a multilayer structure is formed so as to cover the light receiving region 9 (passivation film 19) and the contact electrode 71.
- the film 60 is formed on the surface 103 side of the structure LS2 (see FIG. 36).
- the method for forming the film 60 is the same as the method for forming the step (8) in the third embodiment.
- the semiconductor substrate 51 is removed.
- the main surface of the semiconductor substrate 51 opposite to the film 60 that is, the back surface 112 is exposed.
- the semiconductor substrate 51 and the etching stopper layer 2 are removed by etching from the back surface 112 side of the semiconductor substrate 51 (see FIG. 37).
- the etching method of the semiconductor substrate 51 and the etching stopper layer 2 is the same as the etching method of the step (7) in the fifth embodiment described above.
- Steps (7) to (9) are the same as steps (8) to (10) in the first embodiment, and a description thereof will not be repeated. Through these steps (1) to (9), the semiconductor photodetector PD7 having the structure shown in FIG. 35 is completed.
- the mechanical strength of the multilayer structure LS2 (the stacked high-concentration carrier layer 3, the light absorption layer 5, and the cap layer 7) is maintained by the film 60.
- the semiconductor photodetector PD7 can be easily mounted.
- FIG. 38 is a schematic sectional view showing the configuration of the semiconductor photodetector according to the eighth embodiment.
- the semiconductor photodetector PD8 differs from the semiconductor photodetector PD7 according to the seventh embodiment in that a lens portion 131a is formed on the film 60.
- the semiconductor photodetector PD8 includes a multilayer structure LS2 and a film 60.
- the semiconductor photodetector PD8 is a front-illuminated photodetector in which light enters the multilayer structure LS2 from the film 60 side.
- the semiconductor photodetector PD8 is a photodetector for short-distance optical communication in a wavelength band of 0.85 m, for example.
- a lens portion 13la for condensing incident light is formed on the surface 131 of the film 60.
- the lens portion 131a can be formed by wet etching.
- the wet etching for forming the lens portion 131a is the same as the wet etching method described in the fourth embodiment.
- the multilayer structure LS2 (laminated The mechanical strength of the high-concentration carrier layer 3, the light absorbing layer 5, and the cap layer 7) is maintained by the film 60, and the size of the semiconductor photodetector PD8 is easily reduced. Further, the semiconductor photodetector PD8 can be easily mounted.
- the lens portion 131a is formed on the film 60, the incident light is efficiently received even when the light receiving area 9 is smaller than the irradiation range of the incident light. As a result, a highly reliable semiconductor photodetector PD8 having an excellent SN ratio can be obtained.
- These modified examples are semiconductor photodetector element arrays PDA1 and PDA2 in which a plurality of light receiving regions 9 are arranged in parallel. These photodetector element arrays PDA1 and PDA2 are so-called front-illuminated types.
- the plurality of light receiving sections 11 and the light receiving areas 9 are arranged one-dimensionally or two-dimensionally. Further, in the photodetector array PDA2, as shown in FIG. 40, a plurality of light receiving regions 9 are arranged in a one-dimensional or two-dimensional direction.
- the mechanical strength of the multilayered structure LSI (the stacked high-concentration carrier layer 3, the light absorption layer 5, and the cap layer 7) is the same as that of the first embodiment described above. Is kept by Further, since the pitch between the light receiving sections 11 and the pitch between the light receiving areas 9 can be reduced, the size of the photodetector array PDA1 can be easily reduced.
- the mechanical strength of the multilayer structure LS2 (the stacked high-concentration carrier layer 3, the light absorption layer 5, and the cap layer 7) is the same as that of the fifth embodiment described above. Is kept by Further, since the pitch between the light receiving regions 9 can be narrowed, the photodetector array PDA2 can be easily reduced in size.
- the above-described film 60 may be provided instead of providing the glass substrate 1 and the film 10. Further, lens portions (for example, the above-described lens portions 121a and 131a) may be formed corresponding to each light receiving region 9.
- FIG. 41 is a schematic diagram showing the configuration of the optical interconnection system.
- the optical interconnection system 151 is a system for transmitting an optical signal between a plurality of modules (for example, a CPU, an integrated circuit chip, and a memory) Ml and M2, and includes a semiconductor light emitting element 153, a drive circuit 155, an optical waveguide It includes a substrate 157, a semiconductor photodetector PD1, an amplifier circuit 159, and the like.
- a vertical cavity surface emitting laser (VCSEL) of back emission type can be used as the semiconductor light emitting element 153.
- the module Ml is electrically connected to the drive circuit 155 via a bump electrode.
- the drive circuit 155 is electrically connected to the semiconductor light emitting device 103 via a bump electrode.
- the semiconductor photodetector PD1 is electrically connected to the amplifier circuit 159 via the bump electrode 41.
- the amplifier circuit 159 is electrically connected to the module M2 via a bump electrode.
- the electric signal output from module Ml is sent to drive circuit 155, and is converted into an optical signal by semiconductor light emitting element 153.
- the optical signal from the semiconductor light emitting device 153 passes through the optical waveguide 157a on the optical waveguide substrate 157 and enters the semiconductor photodetector PD1.
- the optical signal is converted into an electric signal by the semiconductor photodetector PD1, sent to the amplifier circuit 109, and amplified.
- the amplified electric signal is sent to the module M2. In this way, the electric signal output from the module Ml is transmitted to the module M2.
- the semiconductor photodetector PD1 instead of the semiconductor photodetector PD1, a shift of the semiconductor photodetectors PD2 to PD8 or the semiconductor photodetector array PDA1 or PDA2 may be used.
- the semiconductor photodetector arrays PDA1 and PDA2 are used, the semiconductor light emitting device 153, the drive circuit 155, the optical waveguide substrate 157, and the amplifier circuit 159 are also arranged to form an array.
- the present invention has been described in detail based on the embodiments.
- the present invention is not limited to the above embodiment.
- the present invention can be variously modified without departing from the gist thereof.
- the thickness, material, etc. of the semiconductor substrate 51, the high concentration carrier layer 3 (3a, 3b), the light absorbing layer 5 (5a, 5b), the cap layer 7 (7a, 7b), etc. are limited to those described above. Absent.
- the material of the semiconductor substrate 51 Si, InP, InGaAs, InSb, or InAsSb may be used instead of GaAs described above.
- the embodiments of the present invention may be modified in various ways. All such modifications are intended to be included within the scope of the following claims, as will be apparent to those skilled in the art, such modifications do not depart from the scope of the invention.
- the present invention can provide a semiconductor photodetector having sufficient mechanical strength and capable of being miniaturized, and a method for manufacturing the same. Further, according to the present invention, the semiconductor photodetector can be easily mounted.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Light Receiving Elements (AREA)
- Solid State Image Pick-Up Elements (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05727554A EP1742276A1 (en) | 2004-03-29 | 2005-03-28 | Semiconductor light detecting element and manufacturing method thereof |
US10/594,619 US7868408B2 (en) | 2004-03-29 | 2005-03-28 | Semiconductor light detecting element includes film which covers light receiving region near main surface of multilayer structure and electrode on main surface |
KR1020067022520A KR101079919B1 (ko) | 2004-03-29 | 2006-10-27 | 반도체 광검출 소자 및 그 제조 방법 |
US12/453,588 US7968429B2 (en) | 2004-03-29 | 2009-05-15 | Method of manufacturing a semiconductor photodetector device by removing the semiconductor substrate on one surface after forming the light-transmitting layer on the opposing surface |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-096060 | 2004-03-29 | ||
JP2004096060A JP4331033B2 (ja) | 2004-03-29 | 2004-03-29 | 半導体光検出素子及びその製造方法 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/594,619 A-371-Of-International US7868408B2 (en) | 2004-03-29 | 2005-03-28 | Semiconductor light detecting element includes film which covers light receiving region near main surface of multilayer structure and electrode on main surface |
US12/453,588 Division US7968429B2 (en) | 2004-03-29 | 2009-05-15 | Method of manufacturing a semiconductor photodetector device by removing the semiconductor substrate on one surface after forming the light-transmitting layer on the opposing surface |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005093857A1 true WO2005093857A1 (ja) | 2005-10-06 |
Family
ID=35056491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/005759 WO2005093857A1 (ja) | 2004-03-29 | 2005-03-28 | 半導体光検出素子及びその製造方法 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7868408B2 (ja) |
EP (1) | EP1742276A1 (ja) |
JP (1) | JP4331033B2 (ja) |
KR (1) | KR101079919B1 (ja) |
CN (1) | CN100477291C (ja) |
TW (1) | TWI363428B (ja) |
WO (1) | WO2005093857A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7859073B2 (en) | 2007-07-06 | 2010-12-28 | Kabushiki Kaisha Toshiba | Back-illuminated type solid-state image pickup device and camera module using the same |
WO2023062846A1 (ja) * | 2021-10-15 | 2023-04-20 | ソニーセミコンダクタソリューションズ株式会社 | 光電変換素子及び撮像装置 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4331033B2 (ja) * | 2004-03-29 | 2009-09-16 | 浜松ホトニクス株式会社 | 半導体光検出素子及びその製造方法 |
KR100821359B1 (ko) * | 2006-09-14 | 2008-04-11 | 주식회사 와이텔포토닉스 | 광 조향 센서장치 및 이를 이용하는 광모듈 |
JP2009206357A (ja) * | 2008-02-28 | 2009-09-10 | Asahi Kasei Electronics Co Ltd | 化合物半導体装置及び化合物半導体装置の製造方法 |
JP2010021451A (ja) * | 2008-07-14 | 2010-01-28 | Panasonic Corp | 固体撮像装置およびその製造方法 |
JP5392458B2 (ja) * | 2008-08-21 | 2014-01-22 | 株式会社ザイキューブ | 半導体イメージセンサ |
JP5352534B2 (ja) * | 2010-05-31 | 2013-11-27 | パナソニック株式会社 | 半導体装置及びその製造方法 |
JP2013191247A (ja) * | 2010-07-09 | 2013-09-26 | Panasonic Corp | 光検出器とそれを用いた光学ヘッドおよび光情報装置 |
JP6214132B2 (ja) * | 2012-02-29 | 2017-10-18 | キヤノン株式会社 | 光電変換装置、撮像システムおよび光電変換装置の製造方法 |
TWI528876B (zh) * | 2012-03-22 | 2016-04-01 | 矽品精密工業股份有限公司 | 中介板及其電性測試方法 |
TWI604632B (zh) * | 2013-04-25 | 2017-11-01 | 晶元光電股份有限公司 | 發光二極體裝置 |
TWI692859B (zh) * | 2015-05-15 | 2020-05-01 | 日商新力股份有限公司 | 固體攝像裝置及其製造方法、以及電子機器 |
JP6903896B2 (ja) * | 2016-01-13 | 2021-07-14 | ソニーグループ株式会社 | 受光素子の製造方法 |
JP2017175102A (ja) * | 2016-03-16 | 2017-09-28 | ソニー株式会社 | 光電変換素子及びその製造方法並びに撮像装置 |
CN115799286A (zh) * | 2016-03-16 | 2023-03-14 | 索尼公司 | 光电转换元件及其制造方法和摄像装置 |
JP2018105925A (ja) * | 2016-12-22 | 2018-07-05 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
JP6968553B2 (ja) * | 2017-03-09 | 2021-11-17 | キヤノン株式会社 | 電子部品及びその製造方法 |
CN111418074B (zh) * | 2017-11-27 | 2023-06-23 | 三菱电机株式会社 | 光半导体装置 |
US10910415B2 (en) | 2018-12-28 | 2021-02-02 | Industry-Academic Cooperation Foundation, Yonsei University | Three-dimensional photodetector and method of manufacturing the same |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000502215A (ja) * | 1995-12-21 | 2000-02-22 | ドクトル ヨハネス ハイデンハイン ゲゼルシャフト ミット ベシュレンクテル ハフツング | 光電センサ素子 |
JP2001267592A (ja) * | 2000-03-14 | 2001-09-28 | Nikon Corp | 半導体装置の製造方法、背面入射型受光装置の製造方法、半導体装置、及び背面入射型受光装置 |
JP2001339057A (ja) * | 2000-05-30 | 2001-12-07 | Mitsumasa Koyanagi | 3次元画像処理装置の製造方法 |
JP2002501679A (ja) * | 1998-03-19 | 2002-01-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 放射感知半導体装置及びそれを製造する方法 |
WO2002039506A1 (fr) * | 2000-11-10 | 2002-05-16 | Hamamatsu Photonics K.K. | Procede de fabrication d'un photodetecteur semi-conducteur |
WO2003041174A1 (fr) * | 2001-11-05 | 2003-05-15 | Mitsumasa Koyanagi | Capteur d'images a semi-conducteur et procede de fabrication associe |
WO2003096427A1 (en) * | 2002-05-10 | 2003-11-20 | Hamamatsu Photonics K.K. | Rear surface irradiation photodiode array and method for producing the same |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US14321A (en) | 1856-02-26 | Improvement in horse-rakes | ||
US291521A (en) | 1884-01-08 | Printing-machine | ||
JPS59501033A (ja) | 1982-06-07 | 1984-06-07 | ヒユ−ズ・エアクラフト・カンパニ− | 阻止された不純物帯を有する背面照射型の赤外線検出器 |
US4507674A (en) * | 1982-06-07 | 1985-03-26 | Hughes Aircraft Company | Backside illuminated blocked impurity band infrared detector |
JPH03104287A (ja) | 1989-09-19 | 1991-05-01 | Fujitsu Ltd | 半導体受光素子の製造方法 |
US5602384A (en) * | 1992-11-06 | 1997-02-11 | Nippondenso Co., Ltd. | Sunlight sensor that detects a distrubition and amount of thermal load |
JP3003479B2 (ja) | 1992-11-06 | 2000-01-31 | 株式会社デンソー | 日射センサ |
JPH06296035A (ja) | 1993-04-07 | 1994-10-21 | Nippon Telegr & Teleph Corp <Ntt> | 光検出器及びその製造方法 |
JPH07162022A (ja) | 1993-12-03 | 1995-06-23 | Oki Electric Ind Co Ltd | 半導体受光素子、その製造方法および半導体の加工方法 |
JP2001177142A (ja) | 1999-12-16 | 2001-06-29 | Hamamatsu Photonics Kk | 受光素子 |
JP2002368334A (ja) | 2001-03-26 | 2002-12-20 | Seiko Epson Corp | 面発光レーザ、フォトダイオード、それらの製造方法及びそれらを用いた光電気混載回路 |
JP3956647B2 (ja) | 2001-05-25 | 2007-08-08 | セイコーエプソン株式会社 | 面発光レ−ザの製造方法 |
CN101714516A (zh) * | 2001-08-24 | 2010-05-26 | 肖特股份公司 | 用于形成触点的方法及封装的集成电路组件 |
US6933489B2 (en) * | 2002-05-10 | 2005-08-23 | Hamamatsu Photonics K.K. | Back illuminated photodiode array and method of manufacturing the same |
JP4331033B2 (ja) * | 2004-03-29 | 2009-09-16 | 浜松ホトニクス株式会社 | 半導体光検出素子及びその製造方法 |
-
2004
- 2004-03-29 JP JP2004096060A patent/JP4331033B2/ja not_active Expired - Fee Related
-
2005
- 2005-03-28 WO PCT/JP2005/005759 patent/WO2005093857A1/ja active Application Filing
- 2005-03-28 EP EP05727554A patent/EP1742276A1/en not_active Withdrawn
- 2005-03-28 CN CNB2005800100812A patent/CN100477291C/zh not_active Expired - Fee Related
- 2005-03-28 US US10/594,619 patent/US7868408B2/en not_active Expired - Fee Related
- 2005-03-29 TW TW094109689A patent/TWI363428B/zh not_active IP Right Cessation
-
2006
- 2006-10-27 KR KR1020067022520A patent/KR101079919B1/ko not_active IP Right Cessation
-
2009
- 2009-05-15 US US12/453,588 patent/US7968429B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000502215A (ja) * | 1995-12-21 | 2000-02-22 | ドクトル ヨハネス ハイデンハイン ゲゼルシャフト ミット ベシュレンクテル ハフツング | 光電センサ素子 |
JP2002501679A (ja) * | 1998-03-19 | 2002-01-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 放射感知半導体装置及びそれを製造する方法 |
JP2001267592A (ja) * | 2000-03-14 | 2001-09-28 | Nikon Corp | 半導体装置の製造方法、背面入射型受光装置の製造方法、半導体装置、及び背面入射型受光装置 |
JP2001339057A (ja) * | 2000-05-30 | 2001-12-07 | Mitsumasa Koyanagi | 3次元画像処理装置の製造方法 |
WO2002039506A1 (fr) * | 2000-11-10 | 2002-05-16 | Hamamatsu Photonics K.K. | Procede de fabrication d'un photodetecteur semi-conducteur |
WO2003041174A1 (fr) * | 2001-11-05 | 2003-05-15 | Mitsumasa Koyanagi | Capteur d'images a semi-conducteur et procede de fabrication associe |
WO2003096427A1 (en) * | 2002-05-10 | 2003-11-20 | Hamamatsu Photonics K.K. | Rear surface irradiation photodiode array and method for producing the same |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7859073B2 (en) | 2007-07-06 | 2010-12-28 | Kabushiki Kaisha Toshiba | Back-illuminated type solid-state image pickup device and camera module using the same |
WO2023062846A1 (ja) * | 2021-10-15 | 2023-04-20 | ソニーセミコンダクタソリューションズ株式会社 | 光電変換素子及び撮像装置 |
WO2023063252A1 (ja) * | 2021-10-15 | 2023-04-20 | ソニーセミコンダクタソリューションズ株式会社 | 光電変換素子及び撮像装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1938867A (zh) | 2007-03-28 |
TW200537701A (en) | 2005-11-16 |
US20080006894A1 (en) | 2008-01-10 |
JP2005286004A (ja) | 2005-10-13 |
US7968429B2 (en) | 2011-06-28 |
US7868408B2 (en) | 2011-01-11 |
KR101079919B1 (ko) | 2011-11-04 |
TWI363428B (en) | 2012-05-01 |
EP1742276A1 (en) | 2007-01-10 |
CN100477291C (zh) | 2009-04-08 |
US20090291521A1 (en) | 2009-11-26 |
JP4331033B2 (ja) | 2009-09-16 |
KR20070004918A (ko) | 2007-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005093857A1 (ja) | 半導体光検出素子及びその製造方法 | |
EP1744417B1 (en) | Semiconductor light emitting element and manufacturing method thereof | |
KR100642230B1 (ko) | 면발광 레이저, 면발광 레이저의 제조 방법, 및 수광소자, 수광 소자의 제조 방법, 및 광전송 모듈 | |
KR101240558B1 (ko) | 광 연결 수단을 구비한 멀티칩 | |
KR101004243B1 (ko) | 이면 입사형 포토다이오드 어레이, 그 제조방법 및반도체장치 | |
WO2005055327A1 (ja) | 半導体受光素子及びその製造方法 | |
TWI502725B (zh) | Photodetector | |
WO2022061820A1 (zh) | 一种接收芯片及其制备方法、测距装置、可移动平台 | |
JPH05129638A (ja) | 光半導体装置 | |
JP2005129689A (ja) | 半導体受光素子及び光受信モジュール | |
JP2004501502A (ja) | 光学的な送信・受信装置を製造する方法、およびこれに基づいて製造された光学的な送信・受信装置 | |
JP4279650B2 (ja) | 半導体受光素子 | |
JP4331258B2 (ja) | 半導体光検出素子 | |
TWI776195B (zh) | 受光元件單元 | |
KR100550417B1 (ko) | 양방향 광통신용 소자 및 그의 제조 방법 | |
US20070235877A1 (en) | Integration scheme for semiconductor photodetectors on an integrated circuit chip | |
JP2005129776A (ja) | 半導体受光素子 | |
JP4438038B2 (ja) | 面型受光素子、およびその製造方法 | |
JPH10242506A (ja) | 光学レンズ機能付き半導体デバイス | |
JP2009177031A (ja) | 光半導体及びその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200580010081.2 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005727554 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020067022520 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2005727554 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10594619 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 10594619 Country of ref document: US |