WO2006041081A1 - 赤外線検出装置及びその製造方法 - Google Patents
赤外線検出装置及びその製造方法 Download PDFInfo
- Publication number
- WO2006041081A1 WO2006041081A1 PCT/JP2005/018776 JP2005018776W WO2006041081A1 WO 2006041081 A1 WO2006041081 A1 WO 2006041081A1 JP 2005018776 W JP2005018776 W JP 2005018776W WO 2006041081 A1 WO2006041081 A1 WO 2006041081A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- infrared
- layer
- insulator layer
- cavity
- semiconductor layer
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 122
- 239000004065 semiconductor Substances 0.000 claims abstract description 51
- 239000012212 insulator Substances 0.000 claims description 87
- 238000005530 etching Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 25
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 35
- 238000009413 insulation Methods 0.000 abstract description 10
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 160
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 43
- 229910052710 silicon Inorganic materials 0.000 description 43
- 239000010703 silicon Substances 0.000 description 43
- 239000000758 substrate Substances 0.000 description 27
- 238000010521 absorption reaction Methods 0.000 description 18
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 16
- 229920005591 polysilicon Polymers 0.000 description 16
- 238000001312 dry etching Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000000605 extraction Methods 0.000 description 7
- 238000002161 passivation Methods 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000005360 phosphosilicate glass Substances 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000005380 borophosphosilicate glass Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- -1 SiO Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- 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
- H01L31/0248—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 characterised by their semiconductor bodies
- H01L31/0352—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 characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035272—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 characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions characterised by at least one potential jump barrier or surface barrier
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/12—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using thermoelectric elements, e.g. thermocouples
-
- 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
- H01L27/14643—Photodiode arrays; MOS imagers
- H01L27/14649—Infrared imagers
Definitions
- the present invention relates to an infrared detection device and a method for manufacturing the same.
- Infrared detectors have been used as thermometers and analyzers or for human body detection.
- this infrared detection device one having an infrared ray detection unit that detects infrared rays by converting them into heat is known.
- the thermal detection from the infrared detection unit to the semiconductor substrate is made directly below the infrared detection unit.
- a so-called membrane structure in which a hollow portion is provided in a semiconductor substrate is employed.
- the cavity is generally formed by isotropic etching. Etching proceeds at substantially the same speed in the direction in which the substrate and the oxide film are laminated and in the direction (plane direction) perpendicular thereto. Therefore, if the cavity is deepened to increase the heat insulation effect, the etching in the plane direction will spread as well. Therefore, in order to suppress the spread of etching in the planar direction, a trench is formed in the semiconductor substrate, a silicon oxide film is embedded in the trench, an etching stopper is formed, and the inside of the etching stubber is etched. Thus, there is a technique for forming a cavity (see, for example, Patent Document 1).
- Patent Document 1 Japanese Patent Laid-Open No. 2002-299596
- An object of the present invention is to provide an infrared detection device and a method for manufacturing the same, which can easily obtain uniform detection sensitivity between elements in the same lot.
- an infrared device having an infrared detection unit, and includes a first semiconductor layer and a first semiconductor layer stacked on the first semiconductor layer.
- a second insulator layer that is stacked on the second semiconductor layer and supports the infrared detecting portion so as to face the cavity in the stacking direction.
- the thermal conductivity of the first insulator layer, the second insulator layer, and the insulating film in the infrared detection device according to the present invention is such that the thermal conductivity of the first semiconductor layer and the second semiconductor layer. It is preferable that the ratio is smaller than the ratio. In this case, since the amount of heat dissipated from the cavity to the first and second semiconductor layers is reduced, the detection sensitivity tends to be improved.
- a method for manufacturing an infrared detection device is a method for manufacturing an infrared ray detection device having an infrared detection unit, wherein the first semiconductor layer is laminated on the first semiconductor layer.
- Infrared detection to form a film, to stack a second insulator layer on the second semiconductor layer, and to face a predetermined portion on the second insulator layer in the stacking direction Forming a portion, and removing a predetermined portion from the second semiconductor layer by etching to form a cavity partitioned by the first insulator layer, the second insulator layer, and the insulating film. It is characterized by having.
- the infrared detection apparatus to be manufactured can obtain uniform detection sensitivity in the case of multi-elements, and with a single element, uniform detection sensitivity can be obtained between elements in the same lot.
- the insulating material is filled in the trench to form an insulating film, or the predetermined portion. It is preferable to form a trench on the outer periphery and then oxidize the semiconductor layer to form an insulating film. In this case, the cavity can be reliably partitioned by the insulating film.
- the insulating film may be formed by CVD or the like, not limited to the insulating film made of acid.
- the infrared detection device of the present invention it is possible to obtain uniform detection sensitivity in the case of multi-elements for detecting infrared rays. High detection sensitivity can be obtained.
- an infrared detection device having uniform detection sensitivity in the case of multi-elements and having uniform detection sensitivity between elements in the same lot with a single element is manufactured. be able to.
- FIG. 1 is a plan view of an embodiment of an infrared detection device according to the present invention.
- FIG. 2 is a sectional view taken along the line ⁇ - ⁇ in FIG.
- FIG. 3 (a) is a production process diagram showing one process of an embodiment of a method for producing an infrared detection device according to the present invention.
- FIG. 3 (b) is a manufacturing process diagram showing the next process of FIG. 3 (a).
- FIG. 4 is a manufacturing process diagram showing a process subsequent to that of FIG. 3 (b).
- FIG. 5 is a plan view of the SOI substrate in a state where a cavity is formed in the manufacturing method of the infrared detection device.
- FIG. 7 is a plan view of a modification of the infrared detection device shown in FIG. 1.
- FIG. 10 is a cross-sectional view of the infrared detecting device shown in FIG. 9 along the line XX.
- FIG. 11 is a plan view of an infrared detecting device having an FET.
- FIG. 12 is a sectional view taken along the line ⁇ - ⁇ in FIG.
- FIG. 13 is a production process diagram showing another embodiment of a method for producing an infrared detection device according to the present invention.
- FIG. 14 is a cross-sectional view of an infrared detecting device manufactured by the manufacturing method shown in FIG.
- FIG. 15 is a cross-sectional view of a modification of the infrared detection device shown in FIG.
- FIG. 1 is a plan view of an embodiment of an infrared detection device according to the present invention.
- FIG. 2 is a cross-sectional view taken along the line ⁇ - ⁇ in FIG.
- the infrared detector 10 shown in FIGS. 1 and 2 is a thermal infrared detector that detects infrared rays by converting them into heat, and is used, for example, in a radiation thermometer.
- the infrared detecting device 10 has a silicon substrate (first semiconductor layer) 12, and an insulator having a substantially constant thickness and SiO force on the silicon substrate 12.
- Layer (first semiconductor layer) 12 As shown in FIG. 2, the infrared detecting device 10 has a silicon substrate (first semiconductor layer) 12, and an insulator having a substantially constant thickness and SiO force on the silicon substrate 12.
- Layer (first semiconductor layer) 12 As shown in FIG. 2, the infrared detecting device 10 has a silicon substrate (first semiconductor layer) 12, and an insulator having a substantially constant thickness and SiO force on the silicon substrate 12.
- Insulator layer 14 is laminated. Further, a silicon layer (second semiconductor layer) 16 is further laminated on the insulator layer 14 with a constant thickness to realize a SOKSilicon on Insulator) structure.
- the silicon layer 16 forming a part of the SOI structure has a box-shaped cavity 18 penetrating in the stacking direction, and an insulating film 20 having SiO force is formed on the inner wall surface 18a of the cavity 18. ing.
- the infrared detector 24 that detects infrared rays is provided on the insulator layer 22.
- the infrared ray detection unit 24 is disposed at a position facing the cavity 18 in the stacking direction, and serves as an infrared absorption film 26 that absorbs infrared rays and a temperature detection unit that detects a temperature change of the infrared absorption film 26.
- thermopile 28 The temperature detection unit may be, for example, a bolometer in addition to the thermopile.
- thermopile 28 is formed of n-type polycrystals arranged in parallel on the insulator layer 22.
- a plurality of thermocouples in which the end portions of the silicon film 30 and the p-type polysilicon film 32 are connected by an aluminum film 34 are connected in series.
- Each of the polysilicon films 30 and 32 constituting this thermocouple is arranged in the four directions perpendicular to the four sides of the cavity 18 formed in a rectangular shape while the upward force of the silicon layer 16 is also disposed above the cavity 18. The force is also arranged so as to extend in the direction of the center of the cavity 18.
- the exposed surfaces of the polysilicon films 30 and 32 and the insulator layer 22 are covered with an insulator layer 36 made of, for example, SiO, as shown in FIG. And on the insulator layer 36,
- An aluminum film 34 is disposed to connect the ends of the polysilicon films 30 and 32, and the aluminum film 34 passes through the opening holes of the insulator layer 36 formed on the ends of the polysilicon films 30 and 32. It is electrically connected to the polysilicon films 30, 32.
- the exposed surface of the aluminum film 34 and the insulator layer 36 are covered with a passivation layer 38 made of SiN.
- the insulator layer 36 and the passivation layer 38 are made of only SiO and Si N. SiON, PSG
- a rectangular infrared absorption film 26 that absorbs infrared rays is provided on the nosy basis layer 38 and above the cavity 18.
- Infrared absorbing film 26 uses black resin with a high infrared absorption rate, and black resin with black filler such as carbon filler (epoxy, silicone, attalinole, urethane, Polyimides or their composite resins), black resists, etc. may be used, and inorganic materials such as gold black, TiN, NiCr, PSG, BPSG, Si N, SiON, SiO, polysilicon, amorphous silicon, etc. ,is there
- connection portion of the polysilicon films 30 and 32 constituting the thermopile 28 functions as a hot contact.
- the connecting portion located above the silicon layer 16 functions as a cold junction. Then, the thermoelectromotive force generated between the hot junction and the cold junction due to the temperature change of the infrared absorption film 26 is taken out by the pair of extraction electrodes 40 and 42 (see FIG. 1). In the region where the extraction electrodes 40 and 42 are formed, the passivation layer 38 is open.
- the insulating layer 20 is formed, and then the insulating layer 22 is stacked on the silicon layer 16.
- thermoplastic 28 is formed on the insulator layer 22 at a position facing the predetermined portion 46.
- the insulator layer 36 covering the exposed portions of the polysilicon films 30 and 32 and the passivation layer 38 covering the exposed portions of the aluminum film 34 are also formed in accordance with the formation of the thermopile 28.
- an infrared absorbing film is formed on the passivation layer 38 and above the predetermined portion 46. 26 is formed.
- the etching hole 50 may be formed after the infrared absorption film 26 is formed. Further, when the infrared absorption film 26 is formed, a through hole 52 is formed at a position corresponding to the etching hole 50.
- the etching gas for dry etching the cavity 18 is not particularly limited as long as silicon can be dry etched.
- the infrared absorption film 26 is formed, a predetermined portion 46 of the silicon layer 16 is etched. However, the cavity 18 is formed by etching first, and the infrared absorption film 26 is also formed with a force. It is also possible.
- the temperature change of the infrared absorption film 26 caused by the infrared absorption film 26 absorbing the infrared rays is detected by the thermopile 28. Infrared is detected by detecting as.
- the insulating layer 14 Since it is partitioned from the substrate 12 and the silicon layer 16, heat dissipation is suppressed and the heat insulation effect is enhanced. As a result, the detection sensitivity of the infrared absorber 24 is improved. And the cavity 18 Since the insulating layer 14, the insulating film 20, and the insulating layer 22 are partitioned to increase the heat insulation effect as described above, the depth of the cavity 18 can be reduced. As a result, the manufacturing efficiency tends to be improved as the time required for the formation process of the cavity 18 is shortened.
- the thicknesses of the insulator layer 14 and the silicon layer 16 are substantially constant, the insulator layer 22 and the insulator layer 14 on the silicon layer 16 are substantially parallel, The insulator layer 14 that forms the bottom of the cavity 18 is also flat.
- the infrared light transmitted through the insulator layer 22 is reflected by the insulator layer 14, the infrared light is reflected at substantially the same angle.
- the reflected infrared rays are irradiated and absorbed almost uniformly by the infrared absorption film 26, so that a single element with little error due to the arrangement of the polysilicon films 30, 32 is in the same lot and is uniform between elements. Easy to obtain high detection sensitivity.
- the shape and size of the cavity 18 included in each infrared detection device 10 are uniform.
- the thicknesses of the insulator layer 14 and the silicon layer 16 are almost constant in the SOI substrate 44, the depth d of the cavity 18 is substantially uniform between the cavities 18 as shown in FIG. The As a result, the infrared detecting device 10 with uniform detection sensitivity can be manufactured, and the manufacturing yield is improved.
- FIG. 7 is a plan view of the infrared detection device 54
- FIG. 8 is a cross-sectional view taken along the line vm-vm of FIG.
- the configuration of the infrared detecting device 54 is that an insulating film 56 having a SiO force is further formed inside the insulating film 20, and the cavity 18 has the first cavity 18A and the first cavity 18A. 2 cavities
- the infrared detection apparatus will be described with reference to FIG.
- the same elements as those of the infrared detecting device 10 of the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
- FIG. 9 is a plan view of the infrared detection device 58 of the second embodiment.
- FIG. 10 is a sectional view taken along line XX in FIG. In FIGS. 9 and 10, the extraction electrode and the wiring from each pixel are omitted.
- the infrared detector 58 is an array-type infrared detector 58 in which 16 infrared detectors 24 are arranged in a 4 ⁇ 4 array, and the infrared detector 10 in FIG. This corresponds to the pixel 60 arranged in an array.
- the infrared detection device 58 one of the extraction electrodes 40 and 42 (see FIG. 1) of each pixel 60, for example, the extraction electrode 42 is connected to a common electrode (not shown) provided in the infrared detection device 58. Because it can detect infrared rays in two dimensions, it is used for infrared image sensors.
- the infrared detection device 58 is manufactured, for example, as follows. That is, the first As in the case of the embodiment, in the prepared SOI substrate 44, after the insulating film 20 is formed on the outer periphery of the predetermined portion 46 that becomes each cavity 18 of the silicon layer 16, the insulating layer 22 is formed on the silicon layer 16. Laminate. Then, after forming the infrared ray detection portion 24 on the insulator layer 22 at a position facing each predetermined portion 46, the silicon layer 16 (that is, the predetermined portion 46) immediately below it is removed by dry etching. Thus, each cavity 18 is formed. Thereafter, for example, 16 infrared detectors 24 arranged in 4 ⁇ 4 are set as one set, and each set is diced to obtain individual infrared detection devices 58.
- the infrared detecting device 58 when the cavity 18 is formed, the etching region in the plane direction is reliably defined by the insulating film 20, so that the infrared detecting portions 24 can be arranged at high density. Therefore, it is possible to reduce the size of the two-dimensional array type infrared detector 58.
- the SOI substrate 44 since the SOI substrate 44 is used, the depth d between the cavities 18 corresponding to the respective infrared detectors 24 is substantially the same as in the first embodiment, so that each pixel 60 has the same depth d. An infrared detector 58 with uniform detection sensitivity can be easily manufactured.
- FIG. 11 is a plan view showing a modified form of the infrared detecting device 58.
- FIG. 12 is a cross-sectional view taken along the line XI ⁇ - ⁇ of FIG. 12 is an enlarged view of a part of the cross section.
- the description of the extraction electrode and the wiring is omitted.
- each of the infrared detection units 24 has an FET (Field-Effect Transistor) 64 as a signal processing circuit at an adjacent position. Different from the detection device 58. As shown in FIG. 12, the FET 64 is formed in the silicon layer 16 outside the cavity 18, and the source 66, gate 68, and drain 70 of the FET 64 are covered with the passivation layer 38.
- FET Field-Effect Transistor
- FIG. 13 is a process diagram of the manufacturing method of the infrared detecting device of the third embodiment.
- this method as shown in FIG. 13A, as in the case of the first embodiment, after preparing the SOI substrate 44, a trench 48 is formed on the outer periphery (boundary) of a predetermined portion 46. To do. Next, the silicon layer 16 is oxidized to form an insulating film 20 having a SiO force on the surface of the silicon layer 16. That
- an insulator layer (second layer) is formed on the silicon layer 16.
- (Insulator layer) 74 is formed and planarized.
- PSG Phosphosilicate Glass
- the filling material for filling the trench 48 is not limited to the polysilicon 72 and is not particularly limited as long as it has heat resistance to high-temperature processes. Examples thereof further include tungsten, molybdenum, and silicide.
- the predetermined portion 46 of the silicon layer 16 is removed by dry etching.
- a cavity 18 is formed in the silicon layer 16 below the infrared ray detector 24.
- the infrared detector 76 uses a partition wall 78 made of polysilicon 72 and an SiO film sandwiching the polysilicon 72.
- the present invention may be a semiconductor layer provided between the force insulator layer 14 using the silicon substrate 12 as the first semiconductor layer and the substrate.
- the insulating layer 22 as the second insulating layer may be laminated with a plurality of force layers having a single layer structure.
- first and second semiconductor layers are exemplified by silicon
- first and second insulating layers and the insulating film are exemplified by SiO. Or S
- the thermal conductivity of the first and second insulator layers and the insulating film is not limited to iO.
- the thermal conductivity of the first and second insulator layers and the insulating film is
- the point is smaller than the second semiconductor layer to improve detection sensitivity.
- an SOI substrate is used.
- the infrared detection device is a stacked body in which a first insulator layer and a second semiconductor layer are sequentially stacked on a first semiconductor layer. If present, it is not limited to the S OI substrate.
- the first insulator layer and the second insulator layer are substantially parallel on the first semiconductor layer, they need only be approximately parallel on at least the cavity 18.
- the depth of the trench 48 (that is, the depth of the insulating film 20) is the force with which the upper surface force of the silicon layer 16 is also set to the insulator layer 14. As long as it extends to the vicinity of the body layer 14, it may extend to the silicon substrate 12 through the insulator layer 14.
- etching for removing the predetermined portion 46 1S wet etching using dry etching can be used, but the damage to the infrared absorption film is reduced. From this viewpoint, it is preferable to use dry etching.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004299173A JP5079211B2 (ja) | 2004-10-13 | 2004-10-13 | 赤外線検出装置及びその製造方法 |
JP2004-299173 | 2004-10-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006041081A1 true WO2006041081A1 (ja) | 2006-04-20 |
Family
ID=36148369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/018776 WO2006041081A1 (ja) | 2004-10-13 | 2005-10-12 | 赤外線検出装置及びその製造方法 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP5079211B2 (ja) |
TW (1) | TW200620642A (ja) |
WO (1) | WO2006041081A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7692148B2 (en) * | 2005-01-26 | 2010-04-06 | Analog Devices, Inc. | Thermal sensor with thermal barrier |
JP2008134113A (ja) * | 2006-11-28 | 2008-06-12 | Hioki Ee Corp | 赤外線センサおよび赤外線センサの製造方法 |
WO2008080195A1 (en) * | 2006-12-29 | 2008-07-10 | The University Of Queensland | Compositions and methods for treating or preventing unwanted immune responses |
TWI567381B (zh) * | 2009-11-16 | 2017-01-21 | 魯道夫科技股份有限公司 | 接合基板的紅外線檢查 |
JP2011153889A (ja) | 2010-01-27 | 2011-08-11 | Seiko Epson Corp | Memsの製造方法及び熱型光検出器の製造方法並びに熱型光検出器、熱型光検出装置及び電子機器 |
TWI452272B (zh) * | 2011-05-24 | 2014-09-11 | Univ Nat Kaohsiung Applied Sci | Thermopile sensing element |
JP5892368B2 (ja) * | 2012-02-01 | 2016-03-23 | 三菱マテリアル株式会社 | 赤外線センサ |
JP2014178172A (ja) * | 2013-03-14 | 2014-09-25 | Omron Corp | 赤外線センサおよびその製造方法 |
JP2014219418A (ja) * | 2014-07-24 | 2014-11-20 | セイコーエプソン株式会社 | 焦電型検出器、焦電型検出装置及び電子機器 |
JP6269612B2 (ja) * | 2015-08-05 | 2018-01-31 | 株式会社デンソー | 放射熱センサ |
TWI753712B (zh) | 2020-12-21 | 2022-01-21 | 財團法人工業技術研究院 | 微機電紅外光感測裝置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999031471A1 (fr) * | 1997-12-18 | 1999-06-24 | Mitsubishi Denki Kabushiki Kaisha | Dispositif a semi-conducteur de prise d'image infrarouge |
JP2002299596A (ja) * | 2000-09-21 | 2002-10-11 | Mitsubishi Electric Corp | 半導体装置の製造方法および赤外線イメージセンサの製造方法 |
JP2002365128A (ja) * | 2001-06-06 | 2002-12-18 | Mitsubishi Electric Corp | 熱型センサおよびその製造方法 |
JP2003279409A (ja) * | 2002-03-22 | 2003-10-02 | Toshiba Corp | 赤外線撮像装置及びその製造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10318831A (ja) * | 1997-05-21 | 1998-12-04 | Matsushita Electric Ind Co Ltd | 焦電型赤外線センサー及びそれを備えた赤外線カメラ |
JP3812881B2 (ja) * | 2000-11-22 | 2006-08-23 | 株式会社アイ・エイチ・アイ・エアロスペース | 赤外線検出素子 |
JP3731750B2 (ja) * | 2002-06-24 | 2006-01-05 | 松下電器産業株式会社 | 赤外線センサの製造方法 |
-
2004
- 2004-10-13 JP JP2004299173A patent/JP5079211B2/ja not_active Expired - Fee Related
-
2005
- 2005-10-12 WO PCT/JP2005/018776 patent/WO2006041081A1/ja active Application Filing
- 2005-10-12 TW TW094135497A patent/TW200620642A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999031471A1 (fr) * | 1997-12-18 | 1999-06-24 | Mitsubishi Denki Kabushiki Kaisha | Dispositif a semi-conducteur de prise d'image infrarouge |
JP2002299596A (ja) * | 2000-09-21 | 2002-10-11 | Mitsubishi Electric Corp | 半導体装置の製造方法および赤外線イメージセンサの製造方法 |
JP2002365128A (ja) * | 2001-06-06 | 2002-12-18 | Mitsubishi Electric Corp | 熱型センサおよびその製造方法 |
JP2003279409A (ja) * | 2002-03-22 | 2003-10-02 | Toshiba Corp | 赤外線撮像装置及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
TW200620642A (en) | 2006-06-16 |
JP5079211B2 (ja) | 2012-11-21 |
JP2006112869A (ja) | 2006-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2006041081A1 (ja) | 赤外線検出装置及びその製造方法 | |
US8809980B2 (en) | Infrared sensor | |
TWI336394B (en) | Infrared ray sensor and manufacturing method for the same therefore | |
JP4009046B2 (ja) | 赤外線センサ | |
JP5751544B2 (ja) | 非冷却マイクロボロメータを製造する際に使用するシリコン・オン・インシュレーター(soi)相補型金属酸化物半導体(cmos)ウェーハ | |
JP6291760B2 (ja) | 熱電対、サーモパイル、赤外線センサー及び赤外線センサーの製造方法 | |
JP5259430B2 (ja) | 光検出器 | |
CN100473962C (zh) | 红外线阵列检测装置 | |
JP2006300623A (ja) | 赤外線センサ | |
JP2003166876A (ja) | 熱型赤外線検出素子およびその製造方法ならびに熱型赤外線検出素子アレイ | |
KR20120000519A (ko) | 초전형 검출기, 초전형 검출 장치 및 전자기기 | |
JPH07283444A (ja) | 赤外線検知素子の製造方法 | |
EP1209455B1 (en) | Infrared detecting device | |
US10981782B2 (en) | Process for fabricating a device for detecting electromagnetic radiation having an improved encapsulation structure | |
JPH11211558A (ja) | センサ及びセンサアレイ | |
JP4865957B2 (ja) | 熱型赤外線固体撮像装置の製造方法 | |
JP2008082790A (ja) | 赤外線センサ | |
KR101479915B1 (ko) | 고 해상도를 갖는 열 복사 탐지 장치 및 상기 장치 제조 방법 | |
JP2008082791A (ja) | 赤外線センサ | |
JPH06137943A (ja) | 熱型赤外線センサ | |
JP2000230857A (ja) | 熱型赤外線センサおよび熱型赤外線アレイ素子 | |
JP4960724B2 (ja) | 赤外線センサおよびその製造方法 | |
JP4032521B2 (ja) | センサの製造方法 | |
JP2015169533A (ja) | 熱型赤外線センサー及び熱型赤外線センサーの製造方法 | |
JPH08261832A (ja) | 赤外線センサ及びその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 KM KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG 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 LV 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 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 05793711 Country of ref document: EP Kind code of ref document: A1 |