WO2010110172A1 - X線撮像装置 - Google Patents
X線撮像装置 Download PDFInfo
- Publication number
- WO2010110172A1 WO2010110172A1 PCT/JP2010/054682 JP2010054682W WO2010110172A1 WO 2010110172 A1 WO2010110172 A1 WO 2010110172A1 JP 2010054682 W JP2010054682 W JP 2010054682W WO 2010110172 A1 WO2010110172 A1 WO 2010110172A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ray
- layer
- shielding layer
- aluminum
- imaging apparatus
- Prior art date
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 108
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 94
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 94
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 229920001721 polyimide Polymers 0.000 claims description 14
- 239000004642 Polyimide Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 188
- 239000011347 resin Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 13
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000010408 film Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
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
- H01L27/14643—Photodiode arrays; MOS imagers
- H01L27/14658—X-ray, gamma-ray or corpuscular radiation imagers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/24—Measuring radiation intensity with semiconductor detectors
- G01T1/244—Auxiliary details, e.g. casings, cooling, damping or insulation against damage by, e.g. heat, pressure or the like
-
- 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
- H01L27/1462—Coatings
- H01L27/14623—Optical shielding
-
- 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
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02162—Coatings for devices characterised by at least one potential jump barrier or surface barrier for filtering or shielding light, e.g. multicolour filters for photodetectors
- H01L31/02164—Coatings for devices characterised by at least one potential jump barrier or surface barrier for filtering or shielding light, e.g. multicolour filters for photodetectors for shielding light, e.g. light blocking layers, cold shields for infrared detectors
-
- 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 at least one potential-jump barrier or surface barrier, e.g. phototransistors
- H01L31/115—Devices sensitive to very short wavelength, e.g. X-rays, gamma-rays or corpuscular radiation
-
- 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
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present invention relates to an X-ray imaging apparatus that acquires X-ray images by detecting X-rays incident on a solid-state imaging device.
- X-ray direct detection type CCD Charge-Coupled Device captures X-ray photons directly with CCD detection pixels and acquires X-ray images, so that incident X-ray position information, energy information, and time information Is an X-ray detector to obtain the above.
- a solid-state imaging device such as an X-ray direct detection type CCD (hereinafter referred to as an X-ray CCD) has excellent position resolution and energy resolution, and thus, for example, standard X-rays in an X-ray astronomical observation satellite It is used as a detector (for X-ray detectors, see, for example, Patent Documents 1 to 3).
- each detection pixel of the X-ray CCD detects not only X-rays to be detected but also light (noise light) having a longer wavelength than X-rays such as ultraviolet light, visible light, and infrared light. Has sensitivity.
- detection of such long-wavelength (low energy) noise light causes deterioration of S / N characteristics in X-ray detection.
- a thin film called OBF Optical Blocking Filter
- an image sensor such as an X-ray CCD.
- a method of configuring an X-ray imaging apparatus is used.
- Such an OBF is attached, for example, between an X-ray focusing X-ray mirror and an image sensor.
- the present invention has been made to solve the above problems, and an object of the present invention is to provide an X-ray imaging apparatus capable of suitably suppressing the influence of noise light detection.
- the X-ray imaging apparatus has (1) one X-ray detection unit in which a plurality of detection pixels for detecting incident X-rays are arranged one-dimensionally or two-dimensionally.
- a back-illuminated solid-state image sensor provided on the surface side, the other surface being an X-ray incident surface, and (2) an X-ray incident surface provided on the X-ray incident surface of the solid-state image sensor (3) the shielding layer includes a first aluminum layer provided directly on the X-ray incident surface and a second aluminum provided on the first aluminum layer.
- an ultraviolet light shielding layer which is provided between the first aluminum layer and the second aluminum layer and is used for shielding ultraviolet light.
- a back-illuminated solid-state imaging device is used as an X-ray direct detection type imaging device. And it is set as the structure which forms a shielding layer directly on the X-ray entrance surface of an image pick-up element with respect to noise light longer wavelength than X-rays. According to such a configuration, the entire X-ray imaging apparatus including the imaging element and the shielding unit can be downsized and the structure can be simplified. In addition, since the imaging element and the shielding layer are integrated, the imaging device is not structurally weak.
- the first aluminum layer used for shielding visible light and infrared light is formed on the incident surface of the imaging element, and an ultraviolet light shielding layer is further provided thereon. Thereby, a sufficient shielding effect can be obtained for the entire wavelength range of noise light including ultraviolet light, visible light, and infrared light.
- a second aluminum layer is further provided outside the ultraviolet light shielding layer. As a result, the ultraviolet light shielding layer can be protected, for example, by suppressing the erosion of the ultraviolet light shielding layer by atomic oxygen.
- an X-ray imaging apparatus capable of suitably suppressing the influence of noise light detection in X-ray detection is realized.
- a back-illuminated solid-state imaging device is used as an X-ray direct detection type imaging device, and a shielding layer is formed directly on the X-ray incidence surface of the imaging device.
- a shielding layer is formed directly on the X-ray incidence surface of the imaging device.
- FIG. 1 is a perspective view showing a basic configuration of an X-ray imaging apparatus.
- FIG. 2A is a top view and FIG. 2B is a side sectional view showing the configuration of the first embodiment of the X-ray imaging apparatus.
- FIG. 3 is a top view showing a modification of the X-ray imaging apparatus shown in FIG. 4A is a top view illustrating the configuration of the second embodiment of the X-ray imaging apparatus, and FIG. 4B is a side cross-sectional view thereof.
- FIG. 5 is a top view showing a modification of the X-ray imaging apparatus shown in FIG.
- FIG. 6 is a (a) top view and (b) side sectional view showing the configuration of the third embodiment of the X-ray imaging apparatus.
- FIG. 7 is a top view showing a modification of the X-ray imaging apparatus shown in FIG.
- FIG. 8 is a (a) top view and (b) side sectional view showing the configuration of the fourth embodiment of the X-ray imaging apparatus.
- FIG. 9 is a top view showing a modification of the X-ray imaging apparatus shown in FIG.
- FIG. 1 is a perspective view schematically showing a basic configuration of an X-ray imaging apparatus according to the present invention.
- An X-ray imaging apparatus 1 shown in FIG. 1 includes a solid-state imaging device 10 and a shielding layer 20.
- the solid-state imaging device 10 used for X-ray detection is an X-ray direct detection type imaging device that directly detects incident X-rays without using a scintillator or the like and acquires an X-ray image.
- An X-ray CCD can be used.
- the solid-state imaging device 10 is a back-illuminated imaging device, and an X-ray detection unit (a plurality of detection pixels that detect X-rays is arranged one-dimensionally or two-dimensionally on one surface (front surface) 11 side. A light receiving portion) is formed. Further, the other surface (back surface) 12 opposite to the front surface 11 is an X-ray incident surface on which X-rays to be detected are incident.
- an X-ray detection unit a plurality of detection pixels that detect X-rays is arranged one-dimensionally or two-dimensionally on one surface (front surface) 11 side. A light receiving portion) is formed.
- the other surface (back surface) 12 opposite to the front surface 11 is an X-ray incident surface on which X-rays to be detected are incident.
- a shielding layer 20 used for shielding light having a longer wavelength (low energy) than the X-ray to be detected is formed on the X-ray incident surface 12 thereof.
- the shielding layer 20 shields noise light including ultraviolet light, visible light, and infrared light that enters the image sensor 10 from the X-ray incident surface 12 side.
- the shielding layer 20 includes a first aluminum layer 21 provided directly on the incident surface 12 of the image sensor 10, and the first aluminum layer 21 (the incident surface 12 with respect to the first aluminum layer 21). Is formed of a second aluminum layer 22 provided on the opposite side) and an ultraviolet light shielding layer 25 provided between the first and second aluminum layers 21 and 22.
- the first aluminum layer 21 is used for shielding visible light and infrared light among noise light incident on the image sensor 10.
- the ultraviolet light shielding layer 25 is used for shielding ultraviolet light among noise light.
- the second aluminum layer 22 is used together with the first aluminum layer 21 to shield visible light and infrared light.
- the second aluminum layer 22 is the outermost layer (exposed surface) in the shielding layer 20, and also functions as a protective layer for the inner ultraviolet light shielding layer 25 and the like.
- a conductive portion 23 is provided between the first aluminum layer 21 and the second aluminum layer 22 stacked via the ultraviolet light shielding layer 25 to electrically connect them.
- the configuration of the conductive portion 23 will be specifically described later.
- a polyimide layer can be used as the ultraviolet light shielding layer 25.
- the thickness of the first aluminum layer 21 is 100 nm (1000 mm)
- the thickness of the polyimide layer that is the ultraviolet light shielding layer 25 is 100 nm (1000 mm).
- a configuration in which the thickness of the second aluminum layer 22 is 40 nm (400 mm) can be used.
- a back-illuminated solid-state imaging device 10 is used as an X-ray direct detection type imaging device.
- a shielding layer 20 such as OBF is not provided separately from the imaging apparatus 1 for noise light having a wavelength longer than that of the X-ray to be detected, but directly on the X-ray incident surface 12 of the imaging element 10. It is set as the structure which forms. According to such a configuration, the entire X-ray imaging apparatus 1 including the imaging element 10 and the shielding layer 20 can be downsized and the structure can be simplified. Further, since the image pickup element 10 and the shielding layer 20 are integrated, the image pickup apparatus 1 is prevented from being structurally fragile.
- an electrode or the like that absorbs ultraviolet light is not formed on the X-ray incident surface 12, so each pixel of the X-ray detection unit formed on the front surface 11 side has ultraviolet light, It has detection sensitivity for noise light in a wavelength range including visible light and infrared light. Further, in the configuration in which only the aluminum shielding layer is provided on the X-ray incident surface 12, visible light and infrared light are shielded, but a sufficient shielding effect cannot be obtained for ultraviolet light.
- the first aluminum layer 21 used for shielding visible light and infrared light is formed on the incident surface 12 of the imaging element 10, and further ultraviolet is formed thereon.
- the light shielding layer 25 is provided. Thereby, a sufficient shielding effect can be obtained for the entire wavelength range of noise light including ultraviolet light, visible light, and infrared light.
- the wavelength range of ultraviolet light is 10 nm to 400 nm
- the wavelength range of visible light is 400 nm to 750 nm
- the wavelength range of infrared light is about 750 nm to 100 ⁇ m.
- a second aluminum layer 22 is further provided outside the ultraviolet light shielding layer 25.
- the second aluminum layer 22 also has a function of suppressing heat inflow due to radiation or the like to the solid-state imaging device 10.
- the ultraviolet light shielding layer 25 provided between the first and second aluminum layers 21 and 22 is preferably a shielding layer made of a polyimide layer as described above. According to such a polyimide layer, a sufficient shielding effect against ultraviolet light incident on the image sensor 10 can be obtained.
- the material of the ultraviolet light shielding layer 25 is not limited to polyimide, but can be an organic material such as Teflon (registered trademark) or PET, or a material having a small atomic number such as carbon or beryllium. It is.
- the material of the ultraviolet light shielding layer 25 can be selected in consideration of specific conditions such as the wavelength (energy) of ultraviolet light to be cut in the actual imaging apparatus 1 and the energy of X-rays to be detected. preferable.
- the second aluminum layer 22 is preferably the outermost layer in the shielding layer 20. Thereby, it becomes possible to reliably suppress the erosion of the shielding layer (for example, polyimide layer) due to the above-described atomic oxygen or the like.
- the thickness range of each layer constituting the shielding layer 20 for example, the thicknesses of the first and second aluminum layers 21 and 22 are each 100 nm or less, and the thickness of the polyimide ultraviolet light shielding layer 25 is 50 nm or more. The thickness is preferably 300 nm or less.
- the specific configuration conditions of such a shielding layer 20 are different in the intensity of X-rays, noise light, wavelength distribution, and the like depending on the use environment of the imaging apparatus 1, the detection conditions of X-rays, and the like. It is necessary to consider that the optimum film thickness of each layer changes according to those conditions.
- a conductive portion 23 is provided to electrically connect the first aluminum layer 21 and the second aluminum layer 22 to the shielding layer 20 having the above-described laminated structure. Preferably it is. As a result, charging of the second aluminum layer 22 located outside can be prevented, and the image sensor 10 can be stably operated.
- the conduction part 23 is provided in the area excluding the area corresponding to the X-ray detection part (in the area away from the X-ray detection part as viewed from the X-ray incident direction) with respect to the solid-state imaging device 10. It is preferable. By setting the position where the conductive portion 23 is provided in this way, the reduction of the ultraviolet light shielding effect on the X-ray detection portion due to the formation of the conductive portion 23 between the first and second aluminum layers 21 and 22 is prevented. As a result, noise light can be reliably shielded by the entire X-ray detection unit composed of a plurality of detection pixels.
- FIG. 2A is a top view and FIG. 2B is a side sectional view showing the configuration of the first embodiment of the X-ray imaging apparatus.
- FIG. 2B is a cross-sectional view taken along the line II shown in FIG.
- the X-ray imaging apparatus 1 ⁇ / b> A of the present embodiment includes a solid-state imaging device 10 and a shielding layer 20.
- the shielding layer 20 includes a first aluminum layer 21, an ultraviolet light shielding layer 25, and a second aluminum layer 22.
- a rectangular X-ray detector 15 in which a plurality of detection pixels are two-dimensionally arranged in a predetermined range is provided on the front surface (lower surface in the drawing) 11 side of the image sensor 10. Further, on one side (the right side in the figure) of the X-ray detection unit 15, there is a charge transfer unit 16 for transferring and outputting charges generated by detecting X-rays in each pixel of the detection unit 15. Is provided. Further, on the surface 11 of the image sensor 10, as schematically shown in FIG. 2B, each element such as the surface electrode 13 necessary for realizing the function as the image sensor 10 (for example, CCD) is provided. Is formed.
- the X-ray imaging apparatus 1A of the present embodiment in the area excluding the area corresponding to the X-ray detector 15 of the image sensor 10, in the specific example shown in FIG.
- an opening 26 extending along the right side of the imaging element 10 is provided in the ultraviolet light shielding layer 25.
- the opening 26 is filled with aluminum, so that a conduction portion 23 that electrically connects the aluminum layers 21 and 22 is formed.
- the aluminum layers 21 and 22 are made conductive by the conductive portion 23 while ensuring the noise light shielding effect for the entire X-ray detection portion 15 by the shielding layer 20, so that the second aluminum layer 22 Charging can be suitably prevented.
- FIG. 3 As for the configuration of the opening 26 and the conductive portion 23 of the ultraviolet light shielding layer 25, various configurations can be used specifically, as shown in FIG. 3 as a modification of the X-ray imaging apparatus. It is.
- FIG. 3A an area sandwiched between the right side of the detection unit 15 and the right side of the image sensor 10, an area sandwiched between the left side of the detection unit 15 and the left side of the image sensor 10.
- the shielding layer 20 in the region sandwiched between the upper side and the upper side of the image sensor 10 and in the region sandwiched between the lower side of the detection unit 15 and the lower side of the image sensor 10 an opening 26 is formed in the ultraviolet light shielding layer 25.
- the opening portion 26 is filled with aluminum to form the conduction portion 23.
- the shielding layer 20 in the above-described region is provided with an opening 26 integrated so as to surround the detection unit 15, and the opening 26 is filled with aluminum.
- the conduction portion 23 is configured.
- FIG. 4A is a top view and FIG. 4B is a side sectional view showing the configuration of the second embodiment of the X-ray imaging apparatus.
- FIG. 4B shows a cross-sectional view along the line II-II shown in FIG.
- the X-ray imaging apparatus 1 ⁇ / b> B includes a solid-state imaging device 10 and a shielding layer 20.
- the configuration of the imaging element 10 and the basic laminated structure of the shielding layer 20 are the same as those of the X-ray imaging apparatus 1A shown in FIG.
- a resin conduction portion 27 made of a conductive resin and functioning as the conduction portion 23 is formed on the right side surface of the shielding layer 20 including the aluminum layers 21 and 22 and the ultraviolet light shielding layer 25. Is provided. Also with such a configuration, the aluminum layers 21 and 22 can be made conductive by the resin conductive portion 27, so that charging of the second aluminum layer 22 can be suitably prevented.
- FIG. 5 As a modification of the X-ray imaging apparatus.
- a resin conducting portion 27 that functions as the conducting portion 23 is provided on the right side surface, the left side surface, the upper side surface, and the lower side surface of the shielding layer 20, respectively. It has been.
- a resin conduction portion 27 that functions as a conduction portion 23 that is integrated so as to surround the shielding layer 20 is provided on the above-described side surface.
- FIG. 6A is a top view and FIG. 6B is a side sectional view showing the configuration of the third embodiment of the X-ray imaging apparatus.
- FIG. 6B shows a cross-sectional view along the line III-III shown in FIG.
- the X-ray imaging apparatus 1 ⁇ / b> C of this embodiment includes a solid-state imaging device 10 and a shielding layer 20.
- the configuration of the imaging element 10 and the basic laminated structure of the shielding layer 20 are the same as those of the X-ray imaging apparatus 1A shown in FIG.
- the ultraviolet light shielding layer 25 and the second aluminum layer 22 are not formed in the shielding layer 20 in the region facing the right side of the imaging element 10, and the first aluminum layer 21 is exposed.
- the stepped portion (first aluminum layer exposed portion) 28 is provided.
- electrical_connection part 23 is comprised by electrically connecting the aluminum layers 21 and 22 with the conduction
- the aluminum layers 21 and 22 can be made conductive by the stepped portion 28 and the conductive wire 29, so that the charging of the second aluminum layer 22 can be suitably prevented.
- the step portions 28 are respectively provided in the shielding layer 20 in the region facing the right side, the region facing the left side, the region facing the upper side, and the region facing the lower side of the image sensor 10.
- the conductive layers 23 are configured by electrically connecting the aluminum layers 21 and 22 by the conductive wires 29 at these stepped portions 28.
- the shielding layer 20 in the above-described region is provided with a stepped portion 28 that is integrated so as to surround the detecting portion 15.
- a conductive portion 23 is configured by electrically connecting the aluminum layers 21 and 22.
- FIG. 8A is a top view and FIG. 8B is a side sectional view showing the configuration of the fourth embodiment of the X-ray imaging apparatus.
- FIG. 8B shows a cross-sectional view along the line IV-IV shown in FIG.
- the X-ray imaging apparatus 1 ⁇ / b> D of this embodiment includes a solid-state imaging device 10 and a shielding layer 20.
- the configuration of the imaging element 10 and the basic laminated structure of the shielding layer 20 are the same as those of the X-ray imaging apparatus 1A shown in FIG.
- the ultraviolet light shielding layer 25 and the second aluminum layer 22 are not formed in the shielding layer 20 in the region facing the right side of the imaging element 10, and the first aluminum layer 21 is exposed.
- the stepped portion (first aluminum layer exposed portion) 28 is provided.
- electrical_connection part 23 is comprised by electrically connecting the aluminum layers 21 and 22 with the resin conduction
- the aluminum layers 21 and 22 are made conductive by the step portion 28 and the resin conductive portion 30, so that the charging of the second aluminum layer 22 can be suitably prevented.
- the step portions 28 are respectively provided in the shielding layer 20 in the region facing the right side, the region facing the left side, the region facing the upper side, and the region facing the lower side of the image sensor 10.
- the conductive layers 23 are configured by electrically connecting the aluminum layers 21 and 22 by the resin conductive portions 30 at these stepped portions 28. Further, in the configuration shown in FIG. 9A, the configuration shown in FIG. 9A, the configuration illustrated in FIG. 9A, the step portions 28 are respectively provided in the shielding layer 20 in the region facing the right side, the region facing the left side, the region facing the upper side, and the region facing the lower side of the image sensor 10.
- the conductive layers 23 are configured by electrically connecting the aluminum layers 21 and 22 by the resin conductive portions 30 at these stepped portions 28. Further, in the configuration shown in FIG.
- the shielding layer 20 in the above-described region is provided with a step portion 28 that is integrated so as to surround the detection portion 15, and the resin conduction portion 30 is provided by this step portion 28.
- the conductive layer 23 is configured by electrically connecting the aluminum layers 21 and 22.
- the X-ray imaging apparatus is not limited to the above-described embodiments and configuration examples, and various modifications are possible.
- only one ultraviolet light shielding layer 25 is provided between the first and second aluminum layers 21 and 22, but a plurality of layers including the ultraviolet light shielding layer 25 are formed of the aluminum layer 21. , 22 may be provided.
- the 2nd aluminum layer 22 is used as the outermost layer in the shielding layer 20, an additional layer may be provided in the outer side of the aluminum layer 22, and it may be used as the outermost layer.
- an X-ray detection unit in which a plurality of detection pixels for detecting incident X-rays are arranged is provided on one surface side, and the other surface is an X-ray incident surface.
- a back-illuminated solid-state imaging device and (2) a shielding layer provided on the X-ray incidence surface of the solid-state imaging device and used for shielding light having a wavelength longer than that of the X-ray to be detected.
- the shielding layer is provided between the first aluminum layer provided directly on the X-ray incident surface, the second aluminum layer provided on the first aluminum layer, and the first aluminum layer and the second aluminum layer.
- a configuration having an ultraviolet light shielding layer provided and used for shielding ultraviolet light is used.
- the ultraviolet light shielding layer provided between the first and second aluminum layers it is preferable to specifically use a shielding layer made of a polyimide layer. According to the shielding layer using such polyimide as a material, it is possible to obtain a sufficient shielding effect against ultraviolet light incident on the image sensor.
- the second aluminum layer is preferably the outermost layer in the shielding layer. This makes it possible to reliably suppress the erosion of the shielding layer (for example, the polyimide layer) due to the atomic oxygen described above.
- a conductive portion for electrically connecting the first aluminum layer and the second aluminum layer is provided to the shielding layer having the above configuration. As a result, charging of the second aluminum layer located outside can be prevented, and the image sensor can be stably operated.
- the conducting portion is provided in a region excluding a region corresponding to the X-ray detection unit (in a region away from the X-ray detection unit as viewed from the X-ray incident direction) with respect to the solid-state imaging device. Is preferred. Thereby, the fall of the shielding effect of the ultraviolet light with respect to an X-ray detection part by forming a conduction
- the present invention can be used as an X-ray imaging apparatus capable of suitably suppressing the influence of noise light detection in X-ray detection.
- SYMBOLS 1, 1A, 1B, 1C, 1D ... X-ray imaging device 10 ... Solid-state image sensor (X-ray CCD), 11 ... Surface, 12 ... X-ray incident surface, 13 ... Surface electrode, 15 ... X-ray detection part, 16 DESCRIPTION OF SYMBOLS ... Charge transfer part, 20 ... Shielding layer, 21 ... 1st aluminum layer, 22 ... 2nd aluminum layer, 23 ... Conducting part, 25 ... Ultraviolet light shielding layer (polyimide layer), 26 ... Opening part, 27 ... Resin conducting part , 28 ... step part, 29 ... conduction wire, 30 ... resin conduction part.
- X-ray imaging device 10 ... Solid-state image sensor (X-ray CCD), 11 ... Surface, 12 ... X-ray incident surface, 13 ... Surface electrode, 15 ... X-ray detection part, 16 DESCRIPTION OF SYMBOLS ... Charge transfer part, 20 ... Shielding layer, 21
Abstract
Description
Claims (5)
- 入射したX線を検出する複数の検出画素が配列されたX線検出部が一方の面側に設けられ、他方の面がX線入射面となっている裏面入射型の固体撮像素子と、
前記固体撮像素子の前記X線入射面上に設けられ、検出対象となるX線よりも長波長の光の遮蔽に用いられる遮蔽層とを備え、
前記遮蔽層は、
前記X線入射面上に直接に設けられる第1アルミニウム層と、
前記第1アルミニウム層上に設けられる第2アルミニウム層と、
前記第1アルミニウム層及び前記第2アルミニウム層の間に設けられ、紫外光の遮蔽に用いられる紫外光遮蔽層と
を有することを特徴とするX線撮像装置。 - 前記紫外光遮蔽層は、ポリイミド層からなることを特徴とする請求項1記載のX線撮像装置。
- 前記第2アルミニウム層は、前記遮蔽層における最外層となっていることを特徴とする請求項1または2記載のX線撮像装置。
- 前記第1アルミニウム層と前記第2アルミニウム層とを電気的に接続する導通部が設けられていることを特徴とする請求項1~3のいずれか一項記載のX線撮像装置。
- 前記導通部は、前記固体撮像素子に対して、前記X線検出部に対応する領域を除く領域内に設けられていることを特徴とする請求項4記載のX線撮像装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800045055A CN102282480B (zh) | 2009-03-25 | 2010-03-18 | X射线摄像装置 |
EP10755970.0A EP2413162B1 (en) | 2009-03-25 | 2010-03-18 | X-ray imaging device |
US13/256,870 US8575559B2 (en) | 2009-03-25 | 2010-03-18 | X-ray imaging device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009074656A JP5118661B2 (ja) | 2009-03-25 | 2009-03-25 | X線撮像装置 |
JP2009-074656 | 2009-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010110172A1 true WO2010110172A1 (ja) | 2010-09-30 |
Family
ID=42780865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/054682 WO2010110172A1 (ja) | 2009-03-25 | 2010-03-18 | X線撮像装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8575559B2 (ja) |
EP (1) | EP2413162B1 (ja) |
JP (1) | JP5118661B2 (ja) |
KR (1) | KR101627005B1 (ja) |
CN (1) | CN102282480B (ja) |
TW (1) | TWI459931B (ja) |
WO (1) | WO2010110172A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5720028B1 (ja) | 2013-10-03 | 2015-05-20 | 株式会社 システムスクエア | 包装体の検査装置 |
JP6609314B2 (ja) * | 2014-11-06 | 2019-11-20 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 医療診断用x線検出器 |
CN105700003B (zh) * | 2015-05-21 | 2019-12-13 | 成都理工大学 | 一种半导体制冷的X射线硅pin探测器 |
KR101815279B1 (ko) | 2016-08-29 | 2018-01-04 | 주식회사 디알텍 | 방사선 감지 소자 및 이의 제조 방법 |
WO2018129445A1 (en) * | 2017-01-09 | 2018-07-12 | Massachusetts Institute Of Technology | Integrated optical blocking filter for compact x-ray imaging detector |
CN111373288A (zh) * | 2017-12-15 | 2020-07-03 | 株式会社堀场制作所 | 硅漂移型放射线检测元件、硅漂移型放射线检测器和放射线检测装置 |
US11579319B2 (en) * | 2019-12-02 | 2023-02-14 | X Development Llc | Nuclear radiation detection |
CN110911501A (zh) * | 2019-12-04 | 2020-03-24 | 中国工程物理研究院材料研究所 | 一种探测装置 |
CN111473792B (zh) * | 2020-05-19 | 2021-11-02 | 中国科学院微电子研究所 | 一种脉冲星x射线探测装置 |
CN112378932B (zh) * | 2020-10-27 | 2023-06-30 | 国网辽宁省电力有限公司丹东供电公司 | 一种带屏蔽装置的x光数字成像dr带电检测设备 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6185860A (ja) * | 1984-10-03 | 1986-05-01 | Olympus Optical Co Ltd | 固体撮像装置およびその製造方法 |
JPH01161184A (ja) * | 1987-12-18 | 1989-06-23 | Nec Corp | 放射線検出用固体撮像素子 |
JPH06302795A (ja) | 1993-04-19 | 1994-10-28 | Olympus Optical Co Ltd | 外部光電効果型固体撮像装置 |
JP2000055839A (ja) * | 1998-08-05 | 2000-02-25 | Nippon Steel Corp | 蛍光x線分析装置 |
JP2001249184A (ja) | 2000-03-06 | 2001-09-14 | Matsushita Electric Ind Co Ltd | X線画像検出装置 |
JP2005274379A (ja) * | 2004-03-25 | 2005-10-06 | Fuiisa Kk | 放射線検出器用遮蔽体及び放射線検出器 |
JP2008107203A (ja) | 2006-10-25 | 2008-05-08 | Shimadzu Corp | X線検出器 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06310699A (ja) * | 1993-04-22 | 1994-11-04 | Olympus Optical Co Ltd | 積層型固体撮像装置 |
JP3908813B2 (ja) * | 1996-12-26 | 2007-04-25 | 浜松ホトニクス株式会社 | X線検知器 |
CN100449764C (zh) * | 2003-11-18 | 2009-01-07 | 松下电器产业株式会社 | 光电探测器 |
JP2005274277A (ja) * | 2004-03-24 | 2005-10-06 | Microscopic Scan:Kk | X線顕微ct装置 |
JP4722675B2 (ja) * | 2005-11-08 | 2011-07-13 | 日油技研工業株式会社 | 放射線被ばく管理衣服 |
-
2009
- 2009-03-25 JP JP2009074656A patent/JP5118661B2/ja active Active
-
2010
- 2010-03-18 EP EP10755970.0A patent/EP2413162B1/en active Active
- 2010-03-18 WO PCT/JP2010/054682 patent/WO2010110172A1/ja active Application Filing
- 2010-03-18 KR KR1020117013138A patent/KR101627005B1/ko active IP Right Grant
- 2010-03-18 CN CN2010800045055A patent/CN102282480B/zh active Active
- 2010-03-18 US US13/256,870 patent/US8575559B2/en active Active
- 2010-03-23 TW TW099108567A patent/TWI459931B/zh active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6185860A (ja) * | 1984-10-03 | 1986-05-01 | Olympus Optical Co Ltd | 固体撮像装置およびその製造方法 |
JPH01161184A (ja) * | 1987-12-18 | 1989-06-23 | Nec Corp | 放射線検出用固体撮像素子 |
JPH06302795A (ja) | 1993-04-19 | 1994-10-28 | Olympus Optical Co Ltd | 外部光電効果型固体撮像装置 |
JP2000055839A (ja) * | 1998-08-05 | 2000-02-25 | Nippon Steel Corp | 蛍光x線分析装置 |
JP2001249184A (ja) | 2000-03-06 | 2001-09-14 | Matsushita Electric Ind Co Ltd | X線画像検出装置 |
JP2005274379A (ja) * | 2004-03-25 | 2005-10-06 | Fuiisa Kk | 放射線検出器用遮蔽体及び放射線検出器 |
JP2008107203A (ja) | 2006-10-25 | 2008-05-08 | Shimadzu Corp | X線検出器 |
Also Published As
Publication number | Publication date |
---|---|
JP5118661B2 (ja) | 2013-01-16 |
JP2010223922A (ja) | 2010-10-07 |
EP2413162A4 (en) | 2017-06-21 |
US8575559B2 (en) | 2013-11-05 |
TWI459931B (zh) | 2014-11-11 |
US20120025089A1 (en) | 2012-02-02 |
EP2413162A1 (en) | 2012-02-01 |
CN102282480B (zh) | 2013-06-26 |
TW201118409A (en) | 2011-06-01 |
EP2413162B1 (en) | 2018-05-30 |
CN102282480A (zh) | 2011-12-14 |
KR20110139186A (ko) | 2011-12-28 |
KR101627005B1 (ko) | 2016-06-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5118661B2 (ja) | X線撮像装置 | |
US9541654B2 (en) | X-ray scintillator containing a multi-layered coating | |
JP6288075B2 (ja) | 撮像素子および撮像装置 | |
EP2847619B1 (en) | Multi-layer horizontal computed tomography (ct) detector array with at least one thin photosensor array layer disposed between at least two scintillator array layers | |
JP5196739B2 (ja) | 放射線撮像装置及び放射線撮像システム | |
WO2011129132A1 (ja) | 放射線検出器モジュール | |
JP4455534B2 (ja) | 放射線検出器およびその製造方法 | |
JP2007101256A (ja) | X線撮像装置及びx線ct装置 | |
US20110147602A1 (en) | Radiographic imaging apparatus, radiographic imaging system, and method of producing radiographic imaging apparatus | |
WO2016052249A1 (ja) | 固体撮像素子および製造方法、並びに電子機器 | |
JP2011200630A (ja) | 放射線撮影装置 | |
US7541596B2 (en) | Method and apparatus for increasing light absorption in an image sensor using energy conversion layer | |
US7233003B2 (en) | Radiation detector | |
JP2011227044A (ja) | 放射線撮影装置 | |
JP2017200522A (ja) | 放射線撮像装置及び放射線撮像システム | |
JP2005203708A (ja) | X線撮像素子 | |
JP2006140249A (ja) | 積層型固体撮像装置 | |
JP2013072722A (ja) | 放射線検出器、放射線画像撮影装置及びプログラム | |
JP4603425B2 (ja) | 放射線検出器用部品および放射線検出器 | |
JP5789223B2 (ja) | 放射線撮像装置及び放射線撮像システム | |
JP2008089459A (ja) | X線検出器、シンチレータパネル、x線検出器の製造方法およびシンチレータパネルの製造方法 | |
CN114127941A (zh) | 固态图像传感器 | |
JP2016012642A (ja) | 固体撮像装置及びその制御方法 | |
JP4315593B2 (ja) | 半導体撮像装置および撮像システム | |
JP2008134078A (ja) | 放射線検出器用部品および放射線検出器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080004505.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10755970 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20117013138 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13256870 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010755970 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |