WO2018030140A1 - 撮像素子、製造方法、および電子機器 - Google Patents
撮像素子、製造方法、および電子機器 Download PDFInfo
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- WO2018030140A1 WO2018030140A1 PCT/JP2017/026768 JP2017026768W WO2018030140A1 WO 2018030140 A1 WO2018030140 A1 WO 2018030140A1 JP 2017026768 W JP2017026768 W JP 2017026768W WO 2018030140 A1 WO2018030140 A1 WO 2018030140A1
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- 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
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- 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
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- H01L27/14618—Containers
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- 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
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Definitions
- the present disclosure relates to an imaging device, a manufacturing method, and an electronic device, and more particularly, to an imaging device, a manufacturing method, and an electronic device that can have better characteristics.
- WCSP Wafer Level Chip Size Package
- a process of bonding a silicon substrate and a glass substrate is performed, but it is necessary to appropriately perform the bonding structure.
- Patent Document 1 for the purpose of improving moisture resistance, a transparent member smaller than a solid-state image sensor is bonded to the light-receiving surface side of the solid-state image sensor via a transparent adhesive.
- An optical device having a structure in which the outer periphery is sealed with a sealing resin is disclosed.
- Patent Document 2 for the purpose of improving moisture resistance, a glass wafer larger than the imaging chip is bonded to the light receiving surface side of the imaging chip via an adhesive, and the outermost periphery of the imaging chip and the adhesive is sealed.
- An imaging apparatus having a structure sealed with a member is disclosed.
- Patent Documents 1 and 2 conventionally, various techniques have been developed for bonding the silicon substrate and the glass substrate. However, the development of a technique capable of further improving the characteristics. Is required.
- the present disclosure has been made in view of such a situation, and is intended to provide better characteristics.
- An imaging device includes a sensor substrate provided with an effective pixel region in which a plurality of pixels are arranged in an array, and a transparent sealing member that seals the surface of the sensor substrate on the effective pixel region side
- the sensor substrate and the sealing member in a region including at least the effective pixel region, and the sensor in an outer peripheral region that is outside the effective pixel region when viewed in plan.
- Product of the perimeter adhesive force and the adhesive area bonded in the outer peripheral region is the adhesive force per unit area by the first adhesive member in the effective pixel region and the effective pixel region. It is set to be larger than the product of the bonding area to be bonded in.
- a manufacturing method includes a sensor substrate provided with an effective pixel region in which a plurality of pixels are arranged in an array, and a transparent sealing member that seals the surface of the sensor substrate on the effective pixel region side
- the sensor substrate and the sealing member in a region including at least the effective pixel region, and the sensor in an outer peripheral region that is outside the effective pixel region when viewed in plan.
- Product of the perimeter adhesive force and the adhesive area bonded in the outer peripheral region is the adhesive force per unit area by the first adhesive member in the effective pixel region and the effective pixel region.
- the second adhesive member is formed on one of the sensor substrate and the sealing member so as to have a discontinuous portion in the outer peripheral region, and the region where the second adhesive member is formed Forming the first adhesive member over the entire surface, and bonding the sensor substrate and the sealing member with the first adhesive member and the second adhesive member.
- the second adhesive member is formed so as to be arranged in a region other than the location that becomes the chip end of the image pickup device in the outer peripheral region, Forming the first adhesive member in a region other than the region where the second adhesive member is formed, and joining the sensor substrate and the sealing member by the first adhesive member and the second adhesive member; A step of dicing at a position to be a chip end of the image sensor.
- An electronic apparatus includes a sensor substrate provided with an effective pixel region in which a plurality of pixels are arranged in an array, and a transparent sealing member that seals the surface of the sensor substrate on the effective pixel region side
- the sensor substrate and the sealing member in a region including at least the effective pixel region, and the sensor in an outer peripheral region that is outside the effective pixel region when viewed in plan.
- the product of the adhesive force per area and the adhesive area bonded in the outer peripheral region is the adhesive force per unit area by the first adhesive member in the effective pixel region and the effective pixel region.
- An imaging element is set larger than the product of the bonding area to be bonded in.
- a sensor substrate provided with an effective pixel region in which a plurality of pixels are arranged in an array, a transparent sealing member that seals a surface of the sensor substrate on the effective pixel region side, and at least effective A first adhesive member that adheres the sensor substrate and the sealing member in a region including the pixel region, and a sensor substrate and the sealing member in an outer peripheral region that is outside the effective pixel region when viewed in plan, A second adhesive member having higher rigidity than the first adhesive member.
- the product of the adhesive force per unit area by the first adhesive member and the second adhesive member in the outer peripheral region and the adhesive area bonded in the outer peripheral region is the unit area by the first adhesive member in the effective pixel region. It is set to be larger than the product of the per-bonding force and the bonding area bonded in the effective pixel region.
- FIG. It is a figure explaining the manufacturing method of the image pick-up element shown in FIG. It is a figure which shows the 2nd modification of the image pick-up element shown in FIG. It is a figure which shows the 5th structural example of an image pick-up element. It is a figure which expands and shows a pad opening part. It is a figure explaining the manufacturing method of the image pick-up element shown in FIG. It is a figure which shows the modification of the image pick-up element shown in FIG. It is a figure explaining the manufacturing method of the image pick-up element shown in FIG. It is a figure which shows the cross-sectional modification of a pad opening part. It is a figure which shows the modification of the planar shape of a pad opening part. It is a figure which shows the modification of the vicinity of a pad opening part. It is a block diagram which shows the structural example of an imaging device. It is a figure which shows the usage example which uses an image sensor.
- FIG. 1 is a diagram illustrating a configuration example of a first embodiment of an image sensor to which the present technology is applied.
- FIG. 1A shows a planar configuration example of the image sensor 11
- FIG. 1B shows a cross-sectional configuration example of the image sensor 11.
- the imaging device 11 is configured by laminating a support substrate 12, a sensor substrate 13, a seal resin 14, a reinforcing resin 15, and a sealing glass 16 in order from the bottom.
- the imaging element 11 is a backside illumination in which light is irradiated to the effective pixel region 17 provided on the backside (upper side in FIG. 1B) facing the opposite side to the surface of the semiconductor layer constituting the sensor substrate 13.
- Type CMOS Complementary Metal Oxide Semiconductor
- the support substrate 12 is bonded to the surface of the sensor substrate 13 to be thin-film processed from the back side, and supports the sensor substrate 13.
- the support substrate 12 may be formed with a signal processing circuit that performs signal processing on the pixel signal output from the sensor substrate 13.
- the sensor substrate 13 is formed with pixels made of photodiodes, transistors, and the like, and a plurality of pixels are arranged in an array in the effective pixel region 17.
- the effective pixel area 17 of the sensor substrate 13 is an area where pixels effective for use in image construction when an image is picked up by the image sensor 11 are arranged.
- the sealing resin 14 is an adhesive member for adhering the sensor substrate 13 and the sealing glass 16 at least in a region including the effective pixel region 17.
- a resin material giving priority to optical characteristics is selected for the seal resin 14 so that the effective pixel region 17 can receive light incident on the image sensor 11 satisfactorily.
- the reinforcing resin 15 adheres the sensor substrate 13 and the sealing glass 16 in an outer region outside the effective pixel region 17 when the imaging device 11 is viewed in a plan view. It is an adhesive member.
- a resin material having a rigidity higher than that of the sealing resin 14 is selected as the reinforcing resin 15 in order to reinforce the bonding strength between the sensor substrate 13 and the sealing glass 16.
- the outer region is a region outside the effective pixel region 17 and includes the chip end of the image sensor 11.
- the reinforcing resins 15-1 and 15-2 are disposed in a region including the chip end of the imaging element 11 in the outer region and are formed to have discontinuous portions. Is done.
- the reinforcing resins 15-1 and 15-2-2 are independent (so as not to be continuous) and extend along two opposite sides when the image pickup device 11 is viewed in plan. Formed as follows.
- the sealing resin 14 and the reinforcing resin 15 for example, any of a siloxane resin, an acrylic resin, and an epoxy resin can be used.
- the sensor substrate 13 and the sealing glass 16 are bonded using an inorganic film such as SiO (silicon oxide) or SiN (silicon nitride) instead of the organic resin as the sealing resin 14 and the reinforcing resin 15. It is good also as a structure.
- only the sealing resin 14 may be replaced with an inorganic film, only the reinforcing resin 15 may be replaced with an inorganic film, or both the sealing resin 14 and the reinforcing resin 15 may be replaced with an inorganic film. Good.
- the sealing glass 16 is a transparent member for sealing the effective pixel region 17 of the sensor substrate 13 and air-tightly molding it.
- transmits as the sealing glass 16, and you may employ
- the seal resin 14 and the reinforcing resins 15-1 and 15-2 have an adhesive force per unit area by the seal resin 14 and the reinforcing resins 15-1 and 15-2 in the outer peripheral region.
- the product of the adhesion area in the outer peripheral region is set larger than the product of the adhesion force per unit area by the seal resin 14 in the effective pixel region 17 and the adhesion area in the effective pixel region 17.
- the image pickup device 11 can satisfactorily bond the sensor substrate 13 and the sealing glass 16 by the sealing resin 14 and the reinforcing resins 15-1 and 15-2.
- the image pickup element 11 eliminates the trade-off between the characteristics by selecting the resin material giving priority to the optical characteristics as the seal resin 14 and selecting the resin material giving priority to the peel resistance strength as the reinforcing resin 15. Each resin material can be easily selected. By making such a selection, the effective pixel region 17 of the sensor substrate 13 can receive light well, and the peeling of the sealing glass 16 from the sensor substrate 13 can be reliably suppressed. In other words, the image pickup device 11 can have better light receiving characteristics and peeling characteristics than conventional ones. Thereby, the image pick-up element 11 has higher imaging capability and reliability.
- the sealing resin 14 is applied as compared with a configuration in which the reinforcing resin 15 is continuously formed. It is possible to reduce uneven coating. Thereby, the characteristics of the image sensor 11 can be further improved.
- the image sensor 11 can avoid the seal resin 14 from having a convex shape or a concave shape, and can increase the yield.
- the imaging element 11 has a structure in which moisture that has entered inside during the manufacturing process can easily escape to the outside, and is resistant to condensation. Improvements can be made.
- a resin material to be the reinforcing resin 15 is applied to the entire surface of the sensor substrate 13 on the effective pixel region 17 side.
- the reinforcing resins 15-1 and 15-2 are patterned so as to be discontinuous in the outer region of the image sensor 11. That is, a photoresist is applied to the resin material applied to the entire surface of the sensor substrate 13, or an unnecessary portion of the resin material is removed by performing a photoresist and dry etching to thereby remove the reinforcing resin 15-1 and 15-2 is formed.
- a resin material that becomes the seal resin 14 is applied to the effective pixel region 17 of the sensor substrate 13 on the entire surface other than the portions where the reinforcing resins 15-1 and 15-2 are formed.
- the surface of the sealing resin 14 and the reinforcing resins 15-1 and 15-2 is flattened by applying a small amount of a resin material to be the sealing resin 14 and then performing CMP (Chemical Mechanical Mechanical Polishing).
- the imaging element 11 is formed with the reinforcing resins 15-1 and 15-2, and then the sealing resin 14 is applied, and the sensor substrate 13 is sealed with the sealing resin 14 and the reinforcing resins 15-1 and 15-2. It can be manufactured by a manufacturing process in which the glass 16 is bonded.
- FIG. 2 the manufacturing process of applying the sealing resin 14 and the reinforcing resin 15 to the sensor substrate 13 and bonding the sealing glass 16 has been described.
- the sealing resin 16 and the reinforcing resin 15 are applied to the sealing glass 16.
- the sensor substrate 13 may be adhered by coating.
- the imaging device 11 has a configuration in which the reinforcing resin 15 is not continuously formed along the outer periphery of the chip of the imaging device 11, that is, if the reinforcing resin 15 is formed discontinuously, as shown in FIG. It is not limited to a simple configuration.
- FIG. 3A shows a first modification of the image sensor 11
- FIG. 3B shows a second modification of the image sensor 11.
- Reinforcing resins 15-1 and 15-2 are formed over the entire area of the two sides. That is, in the imaging device 11 of FIG. 1, the reinforcing resins 15-1 and 15-2 are formed in the central regions of the two opposite sides of the chip of the imaging device 11-a, whereas the imaging device 11-a Reinforcing resins 15-1 and 15-2 are formed over the entire area of these two sides.
- a plurality of reinforcing resins 15 are provided along the outer periphery of the chip of the image pickup device 11-b in the region including the chip end in the outer peripheral region of the image pickup device 11-b. It is formed to be scattered.
- the imaging element 11-a and the imaging element 11-b having such a configuration have the reinforcing resin 15 discontinuously formed in the outer peripheral region, and have better characteristics like the imaging element 11 of FIG. Can do. Also in the image pickup device 11-a and the image pickup device 11-b, as in the image pickup device 11 of FIG. 1, the adhesive force and the bonding area by the seal resin 14 and the reinforcing resin 15 are set.
- the sealing glass 16 can be favorably bonded.
- the wafer is at the wafer level before the plurality of image sensors 11 are diced, and in the example of FIG. 4, the wafer is at the wafer level before the three image sensors 11-1 to 11-3 are diced.
- the support substrate 12 side is attached to the adhesive sheet 51.
- the imaging elements 11-1 to 11-3 are each laminated with a support substrate 12, a sensor substrate 13, a seal resin 14, and a sealing glass 16, and each of them is laminated. It is continuous.
- slits are formed between the imaging elements 11-1 to 11-3 by the dicing blade 52 having a step.
- the gap between the sealing resin 14 and the sealing glass 16 between the adjacent imaging elements 11 is wider than the gap between the supporting substrate 12 and the sensor board 13 between the adjacent imaging elements 11.
- the thing of the shape which can form a slit is used. Therefore, in the image pickup devices 11-1 to 11-3, the widths of the sealing resin 14 and the sealing glass 16 are narrower than the widths of the support substrate 12 and the sensor substrate 13, and the image pickup devices 11-1 to 11-11.
- a slit is formed between -3.
- a resin material that becomes the reinforcing resin 15 is applied to the entire surface, and the resin material that becomes the reinforcing resin 15 is also filled in the slits formed between the imaging elements 11-1 to 11-3.
- each of the image sensors 11-1 to 11-3 is diced by the dicing blade 53.
- the dicing blade 53 a blade having a width corresponding to the distance between the support substrate 12 and the sensor substrate 13 between the adjacent image sensors 11 is used. Therefore, in each of the image sensors 11-1 to 11-3, the reinforcing resin 15-1 and 15-2 are formed without removing the resin material on the side surfaces of the sealing resin 14 and the sealing glass 16. That is, when the image pickup device 11 is viewed in a plan view, as shown in FIG. 3A, the reinforcing resins 15-1 and 15-2 along the two opposite sides of the chip are replaced with the sealing resin 14 and the sealing glass 16 as shown in FIG. Formed on both sides.
- the resin material remaining on the surfaces of the image sensors 11-1 to 11-3 is removed by dry etching or CMP, and the image sensors 11-1 to 11-3 are picked up from the adhesive sheet 51.
- the imaging device 11 can be manufactured by a manufacturing process in which the reinforcing resin 15 is formed before picking up. Further, by manufacturing the image sensor 11 at the wafer level, it can be manufactured at low cost and with high accuracy.
- FIG. 5 is a diagram illustrating a second configuration example of the image sensor 11.
- FIG. 5A illustrates a planar configuration example of the image sensor 11A
- FIG. 5B illustrates a cross-sectional configuration example of the image sensor 11A.
- the same reference numerals are given to configurations common to the image sensor 11 in FIG. 1, and detailed description thereof is omitted.
- the image pickup device 11A includes a support substrate 12, a sensor substrate 13, a seal resin 14 and a reinforcing resin 15A, and sealing glass in order from the bottom, like the image pickup device 11 of FIG. 16 is laminated.
- the reinforcing resins 15A-1 and 15A-2 are regions that do not include the chip end of the image pickup device 11A, that is, inside the chip end of the image pickup device 11A. Formed in the region.
- the reinforcing resins 15A-1 and 15A-2 are formed along two opposing sides of the chip of the image sensor 11A so as to be discontinuous, similarly to the reinforcing resins 15-1 and 15-2 in FIG. Is done.
- the reinforcing resins 15A-1 and 15A-2 in the region not including the chip end of the image pickup device 11A, for example, it is possible to easily perform singulation processing in the manufacturing process of the image pickup device 11A. . That is, when the reinforcing resin 15 is formed in the region including the chip end, there is a concern that chipping defects are likely to occur in the dicing of the manufacturing process manufactured at the wafer level and the yield is deteriorated.
- the imaging device 11A suppresses the occurrence of chipping defects and increases the yield because the processing is performed on the sealing resin 14 having rigidity lower than that of the reinforcing resin 15A in the dicing of the manufacturing process manufactured at the wafer level. Can do. In addition, this makes it possible to perform processing with higher accuracy.
- the adhesive force and the adhesive area by the sealing resin 14 and the reinforcing resin 15A are set, and the sensor substrate 13 and the sealing glass 16 are excellent. Can be glued.
- the wafer at the wafer level before the three image pickup devices 11A-1 to 11A-3 are diced.
- a resin material to be used as the reinforcing resin 15A is applied to the entire surface of the sensor substrate 13 on the effective pixel region 17 side.
- the reinforcing resins 15A-1 and 15A-2 are patterned so as to be discontinuous in the outer region of the image sensor 11A. That is, a photoresist is applied to the resin material applied to the entire surface of the sensor substrate 13, or a photoresist and dry etching are performed to remove unnecessary portions of the resin material, thereby reinforcing the resins 15A-1 and 15A. -2.
- a resin material that becomes the sealing resin 14 is applied to the effective pixel region 17 of the sensor substrate 13 on the entire surface other than the portions where the reinforcing resins 15A-1 and 15A-2 are formed.
- the surface of the sealing resin 14 and the reinforcing resins 15A-1 and 15A-2 is flattened by applying a little resin material to be the sealing resin 14 and then performing CMP.
- the sealing glass 16 is bonded to the sealing resin 14 and the reinforcing resins 15A-1 and 15A-2 at the wafer level.
- each of the image sensors 11A-1 to 11A-3 is diced using a dicing blade.
- the processing for the reinforcing resins 15A-1 and 15A-2 is not performed, and the processing for the seal resin 14 is performed, so that the image sensor 11A can be separated.
- the image pickup device 11A is formed by forming the sealing resin 14 and the reinforcing resins 15A-1 and 15A-2 at the wafer level and bonding the sensor substrate 13 and the sealing glass 16 to each other. It can be manufactured by a manufacturing process such as Then, it is possible to avoid processing the reinforcing resins 15A-1 and 15A-2 when the image pickup device 11A is separated.
- FIG. 7A shows a first modification of the image sensor 11A
- FIG. 7B shows a second modification of the image sensor 11A.
- the image sensor 11A-a has the reinforcing resin 15A continuously formed so as to surround the effective pixel region 17 in a region not including the chip end in the outer peripheral region of the image sensor 11A-a. Yes. That is, in the image pickup device 11A-a, if the reinforcing resin 15A is formed in a region not including the chip end in the outer peripheral region of the image pickup device 11A-a, the above-described singulation processing can be easily performed. The effect that can be obtained.
- the image sensor 11A-b includes a plurality of reinforcing resins 15A along the outer periphery of the chip of the image sensor 11A-b in a region not including the chip end in the outer peripheral region of the image sensor 11A-b. Are formed to be scattered.
- the imaging element 11A-a and the imaging element 11A-b having such a configuration are formed in a region where the reinforcing resin 15 does not include the chip end, and have better characteristics as in the imaging element 11A of FIG. be able to. Also in the image pickup device 11A-a and the image pickup device 11A-b, similarly to the image pickup device 11A in FIG. 5, the adhesive force and the bonding area by the seal resin 14 and the reinforcing resin 15A are set.
- the sealing glass 16 can be favorably bonded.
- the image sensor 11 and the image sensor 11A may be formed so that the side surfaces thereof are tapered.
- FIG. 8A shows an image sensor 11A that is formed in a taper shape such that the width decreases toward the light receiving surface of the image sensor 11A by dicing from the light receiving surface side of the image sensor 11A with the dicing blade 54. It is shown.
- a dicing blade 54 is used for dicing from the opposite side to the light receiving surface of the image sensor 11A to form a taper shape that widens toward the light receiving surface of the image sensor 11A.
- An image sensor 11A is shown.
- the side surface of the image sensor 11A to have a tapered shape, for example, flare caused by reflected light reflected on the chip end surface can be suppressed, and the chip set can be downsized.
- the above-described imaging element 11 can be provided with better light receiving characteristics and peeling characteristics than before.
- material selection for the sealing resin 14 and the reinforcing resin 15 can be easily performed, and various manufacturing methods can be employed as described above, thereby improving mass productivity.
- FIG. 9 is a diagram illustrating a third configuration example of the image sensor 11.
- 9A shows a planar configuration example of the image sensor 11C
- FIG. 9B shows an ab cross-sectional view shown in FIG. 9A.
- the same reference numerals are given to the same components as those in the image sensor 11 shown in FIG. 1, and the detailed description thereof is omitted.
- the image sensor 11C is configured by laminating a sensor substrate 13, a sealing resin 14, and a sealing glass 16 in order from the lower side. Then, as shown in FIG. 9A, the image sensor 11C is an outer peripheral region outside the effective pixel region 17, and has the dug portions 101-1 to 101-4 at four locations near the four corners. It has a formed structure.
- the digging portions 101-1 to 101-4 are each formed in the same cross-sectional shape, and are hereinafter simply referred to as the digging portion 101 when it is not necessary to distinguish them.
- the digging portion 101 has a structure in which a countersink portion 102 is formed so as to dig up the sensor substrate 13 and the seal resin 14 is embedded in the countersink portion 102.
- the image pickup device 11C is provided with the digging portions 101 at a plurality of locations (four locations in the example of FIG. 9A) in the outer peripheral region, so that the sensor substrate 13 and the seal resin 14 are joined to the stress from the lateral direction. It becomes a strong structure, and the shear strength of the joint portion can be improved.
- the digging portion 101 is not limited to the structure in which the counterbore portion 102 is provided on the sensor substrate 13, and other structures may be adopted.
- FIG. 10A shows a digging portion 101A having a structure in which a countersink 103 is formed so as to dig the sealing glass 16, and the sealing resin 14 is embedded in the countersink 103.
- 10B shows a digging portion 101B having a structure in which the sealing resin 14 is embedded in both the counterboring portion 102 provided on the sensor substrate 13 and the counterboring portion 103 provided on the sealing glass 16. It is shown.
- the image sensor 11C can also improve the shear strength by adopting the digging portion 101A and the digging portion 101B as shown in FIG.
- the cross-sectional shape of the counterbore 102 constituting the digging portion 101 is a trapezoidal concave shape having a tapered surface that narrows as the sensor substrate 13 is dug as shown in FIG. 9B.
- Other cross-sectional shapes may be adopted without limitation.
- FIG. 11A shows a countersink 102a having a cross-sectional shape formed so as to have a trapezoidal concave shape having a tapered surface that expands as the sensor substrate 13 is dug.
- 11B shows a countersink portion 102b having a cross-sectional shape formed so as to have a concave curved surface shape
- FIG. 11C shows a concave shape consisting of a tapered surface having a vertex.
- a countersink portion 102c having a cross-sectional shape is shown.
- FIG. 11D shows a countersink part 102d having a cross-sectional shape formed so as to have a concave shape whose side surface is substantially perpendicular to the surface of the sensor substrate 13.
- the imaging element 11C can be provided with the digging portion 101 formed by the countersink portions 102a to 102d having various cross-sectional shapes.
- the manufacturing method of the image pick-up element 11C is demonstrated.
- the ab cross-section portion shown in FIG. 9A will be described, but the manufacturing method of the other portions is the same as the conventional method.
- the effective pixel region 17 as shown in FIG. 9A is formed in the central region of the sensor substrate 13.
- the region other than the formation portion is patterned with the photoresist 111 so that the formation portions of the digging portion 101 in the outer peripheral region of the sensor substrate 13 (four locations in the example of FIG. 9A) are opened. To do.
- the third step for example, dry etching is performed to form a countersink portion 102 on the sensor substrate 13 at a location where the photoresist 111 is opened.
- a resin material to be the sealing resin 14 is applied to the entire surface of the sensor substrate 13. At this time, a resin material is applied so that the counterbore 102 is also filled.
- the imaging element 11C provided with the digging portion 101 can be manufactured by dicing the wafer. .
- it can be manufactured by the same manufacturing process.
- FIG. 13A shows a planar configuration example of the image sensor 11C-a
- FIG. 13B shows an ab cross-sectional view shown in FIG. 13A. Note that in the image sensor 11C-a, the same reference numerals are given to configurations common to the image sensor 11C of FIG. 9, and detailed description thereof is omitted.
- the image sensor 11C-a has the digging portions 101-1 to 101-4 formed in the same manner as the image sensor 11C of FIG. 15-4 is formed.
- a resin material having higher rigidity than the sealing resin 14 is selected for the reinforcing resins 15-1 to 15-4 in order to reinforce the bonding strength between the sensor substrate 13 and the sealing glass 16.
- the reinforcing resins 15-1 to 15-4 are formed at, for example, four locations in the outer peripheral region outside the effective pixel region 17 and in the vicinity of the four sides. Further, as shown in FIG. 13B, the reinforcing resin 15-1 is formed so as to adhere the sensor substrate 13 and the sealing glass 16, and although not shown, the reinforcing resins 15-3 to 15-4 are also reinforced. It is formed in the same manner as the resin 15-1.
- the imaging element 11C-a formed in this manner can favorably bond the sensor substrate 13 and the sealing glass 16 and can increase the bonding strength between them.
- FIG. 14 a manufacturing method of the image sensor 11C-a will be described.
- the ab cross-sectional portion shown in FIG. 13A will be described, but the manufacturing method of the other portions is the same as the conventional method.
- an effective pixel region 17 as shown in FIG. 13A is formed in the central region of the sensor substrate 13.
- the region other than the formation portion is patterned with the photoresist 111 so that the formation portions of the digging portion 101 in the outer peripheral region of the sensor substrate 13 (four locations in the example of FIG. 9A) are opened. To do.
- the third step for example, dry etching is performed to form a countersink portion 102 on the sensor substrate 13 at a location where the photoresist 111 is opened.
- reinforcing resins 15-1 to 15-4 are formed.
- a resin material to be the reinforcing resin 15 is applied to the entire surface of the sensor substrate 13 on the effective pixel region 17 side, and a photoresist is applied to the resin material, or a photoresist and dry etching are performed to obtain a resin.
- Reinforcing resins 15-1 to 15-4 are formed by removing unnecessary portions of the material.
- a resin material to be the sealing resin 14 is applied to the effective pixel region 17 of the sensor substrate 13 on the entire surface other than the portions where the reinforcing resins 15-1 to 15-4 are formed.
- the surface of the sealing resin 14 and the reinforcing resins 15-1 to 15-4 is flattened by applying a small amount of the resin material to be the sealing resin 14 and then performing CMP (Chemical Mechanical Mechanical Polishing).
- the sealing glass 16 is bonded to the sealing resin 14 and the reinforcing resins 15-1 to 15-4, so that the digging portion 101 and the reinforcing resins 15-1 to 15-4 are provided.
- the image sensor 11C-a can be manufactured.
- it can be manufactured by the same manufacturing process.
- the image pickup device 11C provided with the digging portion 101 and the image pickup device 11C-a provided with the digging portion 101 and the reinforcing resins 15-1 to 15-4 are shown, for example, in FIG.
- the share strength can be improved.
- FIG. 16 is a diagram illustrating a fourth configuration example of the image sensor 11.
- the same reference numerals are given to the same components as those in the image sensor 11 shown in FIG. 1, and detailed description thereof is omitted.
- FIG. 16 shows a cross-sectional configuration example of the image pickup device 11D, and the image pickup device 11D is bonded to the circuit board 121 using a solder ball 122.
- the imaging element 11D is formed so that the central region of the sensor substrate 13 is recessed when viewed in cross section, so that an outer peripheral wall 13a is formed so as to surround the outer periphery of the sensor substrate 13, and is surrounded by the outer peripheral wall 13a.
- An effective pixel region 17 is formed in the recessed portion 13b.
- the sealing resin 14 is formed along the outer peripheral wall 13a of the sensor substrate 13 and the surface of the concave portion 13b, and the convex portion 16a is formed in a convex shape in accordance with the shape of the concave portion 13b. Glass 16 is laminated.
- the imaging element 11D is configured such that the convex portion 16a of the sealing glass 16 enters the concave portion 13b of the sensor substrate 13. Thereby, image pick-up element 11D can suppress generation
- the imaging element 11D has a configuration in which the effective pixel region 17 is formed in the concave portion 13b of the sensor substrate 13 and the outer peripheral wall 13a is provided so as to surround the outer periphery.
- the effective pixel region 17 is lost due to the outer peripheral wall 13a. Light can be prevented from entering.
- FIG. 17 a modified example of the image sensor 11D will be described.
- the same reference numerals are given to the same components as those in the image pickup device 11D shown in FIG. 16, and detailed description thereof is omitted.
- the image sensor 11D-a is configured such that the convex portion 16a of the sealing glass 16 enters the concave portion 13b of the sensor substrate 13 in the same manner as the image sensor 11D of FIG.
- the reinforcing resin 15 and the anchor member 123 are formed.
- the reinforcing resin 15 is formed so as to adhere the sensor substrate 13 and the sealing glass 16 along the outer peripheral wall 13a of the sensor substrate 13.
- the anchor member 123 reinforces the fixing of the sensor substrate 13 and the sealing glass 16 so as to reach the sealing glass 16 from the sensor substrate 13 side through the reinforcing resin 15 in the outer peripheral region of the imaging element 11D-a. Formed as follows.
- the anchor member 123 is formed by forming a groove portion that penetrates the reinforcing resin 15 from the sensor substrate 13 to reach the sealing glass 16 and embeds a material having higher strength than the reinforcing resin 15 in the groove portion.
- anchor members 123-1 to 123-4 can be formed at four locations near the four corners.
- the imaging element 11D-a can form an anchor member 123 on the outer peripheral portion so as to surround the effective pixel region 17.
- the image pickup device 11D-a configured in this manner is caused by heat peeling due to a stress difference between the sensor substrate 13 and the sealing glass 16 and insufficient adhesion compared to the image pickup device 11D of FIG. It is possible to increase the resistance against peeling of the boundary surface.
- the imaging element 11D-a can prevent stray light from entering the effective pixel region 17 in the same manner as the imaging element 11D of FIG.
- a manufacturing method of the image sensor 11D-a will be described with reference to FIGS. 19 and 20, the cross-sectional portion similar to that of FIG. 17 will be described, but the manufacturing method of the other portions is the same as the conventional method.
- a region other than the formation portion is patterned with a photoresist 124 so that the formation portion of the concave portion 13 b in the central region of the sensor substrate 13 is opened.
- the concave portion 13b is formed in the sensor substrate 13 at the location where the photoresist 124 is opened. Thereafter, the photoresist 124 is removed, and the effective pixel region 17 is formed in the central region of the concave portion 13b.
- the sealing resin 14 and the reinforcing resin 15 are applied to the surface of the sensor substrate 13.
- the sealing glass 16 is bonded to the sensor substrate 13 so that the convex portion 16 a enters the concave portion 13 b of the sensor substrate 13.
- the region other than the formation portion is patterned with a photoresist 125 so that the formation portion of the anchor member 123 in the outer peripheral region of the sensor substrate 13 is opened.
- the groove 126 is formed in the sensor substrate 13 at a location where the photoresist 125 is opened, for example, by performing dry etching. Thereafter, the photoresist 125 is removed.
- the anchor member 123 is formed by embedding, for example, copper in the groove 126 of the sensor substrate 13.
- the convex portion 16a of the sealing glass 16 enters the concave portion 13b of the sensor substrate 13, and the imaging element 11D-a provided with the anchor member 123 can be manufactured. .
- FIG. 21 is a diagram illustrating a second modification of the image sensor 11D.
- the same reference numerals are given to the same components as those in the image pickup device 11D shown in FIG. 16, and detailed description thereof is omitted.
- the image sensor 11D-b is provided with a convex portion 13c in which the central region of the sensor substrate 13 is formed in a convex shape when viewed in cross section, and the effective pixel region 17 is formed in the convex portion 13c.
- an outer peripheral wall 16b is formed so as to surround the outer periphery of the sealing glass 16, and the sensor substrate 13 so that the convex portion 13c enters the concave portion 16c surrounded by the outer peripheral wall 16b.
- the image sensor 11D-b is configured such that the concave-convex relationship between the sensor substrate 13 and the sealing glass 16 is reversed with respect to the image sensor 11D of FIG. Accordingly, the image pickup device 11D-b is caused by, for example, heat peeling due to a stress difference between the sensor substrate 13 and the sealing glass 16 or insufficient adhesion, similarly to the image pickup device 11D of FIG. Occurrence of boundary peeling can be suppressed.
- the reinforcing resin 15 and the anchor member 123 may be provided in the same manner as the image sensor 11D-a in FIG.
- FIG. 22 is a diagram illustrating a fifth configuration example of the image sensor 11.
- 22A shows an example of a planar configuration of the image sensor 11E
- FIG. 22B shows an enlarged pad opening region 131 provided in the image sensor 11E.
- the same reference numerals are given to the same components as those in the image sensor 11 shown in FIG. 1, and detailed description thereof is omitted.
- the image sensor 11E is configured by providing a pad opening region 131 along one side of the outer peripheral region that is outside the effective pixel region 17.
- a pad opening 132 for opening a pad for connecting the image pickup device 11E to the outside using a bonding wire is formed as shown in FIG. 22B. .
- FIG. 23 shows a cross-sectional configuration example of the pad opening 132 formed in the image sensor 11E.
- the pad opening 132 is formed so as to dig into the sensor substrate 13.
- a thin film 133 is formed on the surface of the sensor substrate 13 on which the pad openings 132 are formed, and the seal resin 14 is laminated on the sensor substrate 13 via the thin film 133. Yes.
- the stepped portion provided with the pad opening 132 is formed at an acute angle. Then, by forming the thin film 133 on the sensor substrate 13, as shown in an enlarged manner in FIG. 23, the acute angle of the stepped portion is relaxed, that is, the thin film 133 is formed in a curved surface. In this way, by providing roundness in the stepped portion of the pad opening 132 with the thin film 133, for example, generation of local stress assumed in a configuration in which the seal resin 14 is directly laminated on the stepped portion of the pad opening 132 is generated. Can be suppressed.
- the image pickup element 11E can suppress the local stress by forming the thin film 133 on the sensor substrate 13 to avoid the stress concentration at the stepped portion of the pad opening 132.
- the resin 14 can be prevented from breaking.
- FIG. 24 a method for manufacturing the image sensor 11E will be described. 24, the cross-sectional portion shown in FIG. 23 will be described, but the manufacturing method of the other portions is the same as the conventional method.
- a recess to be the pad opening 132 is formed on the sensor substrate 13 by dry etching or the like.
- a thin film 133 is formed on the sensor substrate 13 to form a stepped portion of the concave portion that becomes the pad opening 132 in a curved surface.
- a resin material to be the sealing resin 14 is applied, and in the fourth step, the sealing glass 16 is bonded.
- the imaging element 11E with a reduced acute angle formed at the stepped portion of the pad opening 132 can be manufactured.
- FIG. 25 shows a cross-sectional configuration example of the pad opening 132 formed in the image sensor 11E-a, as in FIG. Note that in the image sensor 11E-a, the same reference numerals are given to the same components as those in the image sensor 11E in FIGS. 22 and 23, and detailed description thereof is omitted.
- the slope ⁇ of the side surface 134 of the pad opening 132 is formed so as to be gentler than that of the image sensor 11E of FIGS.
- the acute angle of the stepped portion provided with the pad opening 132 of the image sensor 11E-a can be relaxed. Therefore, also in the image sensor 11E-a, it is possible to suppress the occurrence of local stress as in the image sensor 11E of FIGS.
- the side surface 134 of the pad opening 132 provided in the image sensor 11E-a is formed by multi-stage processing. Therefore, the inclination of each side of the side surface formed in multiple stages is formed in the same manner as the pad opening 132 of the image sensor 11E shown in FIG. 23. However, as shown in FIG. The slope ⁇ of 134 can be made gentle.
- the imaging element 11E suppresses local stress by avoiding the occurrence of stress concentration in the stepped portion of the pad opening 132 by reducing the gradient ⁇ of the side surface 134 of the pad opening 132. be able to.
- the imaging element 11E-a can suppress the sealing resin 14 from being broken even if the sealing resin 14 is directly laminated on the sensor substrate 13.
- FIG. 26 a manufacturing method of the image sensor 11E-a will be described.
- the cross-sectional portion shown in FIG. 25 will be described, but the manufacturing method of the other portions is the same as the conventional method.
- the sensor substrate 13 is formed with recesses to be the pad openings 132 in multiple stages by dry etching or the like.
- the side surface 134 with a gentle gradient ⁇ can be formed. Note that an example in which the side surface 134 is formed in three stages will be described here, but the side surface 134 is formed in three or more stages.
- a resin material to be the sealing resin 14 is applied, and in the fifth step, the sealing glass 16 is bonded.
- the gradient of the side surface 134 of the pad opening 132 is gently formed, so that the imaging element 11E-a in which the acute angle of the stepped portion is relaxed can be manufactured.
- the imaging element 11E and the imaging element 11E-a configured as described above can avoid stress concentration due to, for example, expansion or contraction of the sealing resin 14 due to a temperature change when performing a thermal shock test. The occurrence of breakage can be suppressed.
- an air gap 135 is provided in the pad opening 132.
- the reinforced resin 15 is filled in the digging portion to be the pad opening 132b, and the reinforcing resin 15 is formed to be flat with the surface of the sensor substrate 13. Then, the sealing resin 14 is formed in a plane with respect to the surfaces of the sensor substrate 13 and the reinforcing resin 15.
- the sealing resin 14 is filled in the digging portion to be the pad opening 132c, and the sealing resin 14 is formed to be flat with the surface of the sensor substrate 13. Then, the reinforcing resin 15 is formed in a plane with respect to the surfaces of the sensor substrate 13 and the seal resin 14.
- the reinforcing resin 15 is formed from the digging portion that becomes the pad opening 132d to the sealing glass 16, and the sealing resin 14 is formed around the reinforcing resin 15. That is, when viewed in a plan view, only the reinforcing resin 15 is formed in the region where the pad opening 132d is formed, and the sealing resin 14 does not enter the pad opening 132d. In the pad opening portion 132d having such a configuration, it is possible to avoid the occurrence of breakage in the seal resin 14 as a result of preventing a step from being formed in the seal resin 14.
- the sealing resin 14 is formed from the digging portion that becomes the pad opening 132e to the sealing glass 16, and the reinforcing resin 15 is formed around the sealing resin 14. That is, when viewed in plan, the sealing resin 14 is formed only in the region where the pad opening 132e is formed, and the sealing resin 14 is not formed in the stepped portion of the pad opening 132e. . In the pad opening portion 132e having such a configuration, it is possible to prevent the seal resin 14 from being broken as a result of preventing a step from being formed in the seal resin 14.
- the planar shape of the pad opening 132A can be made circular so as to be rounded when viewed in plan, and the corner of the step can be chamfered.
- the pad resin 132A having such a shape can also prevent the sealing resin 14 from being broken.
- a large pad opening 132B is provided and formed so as to reduce the numerical aperture, and the corner of the step can be chamfered.
- the pad resin 132 having such a shape can also prevent the sealing resin 14 from being broken.
- the reinforcing resin 15 is formed so as to surround the pad opening 132C, and is filled in the pad opening 132C and formed in the vicinity of the seal resin 14 and other regions.
- the sealing resin 14 can be divided. Thereby, for example, even if the sealing resin 14 is broken due to the stress concentration at the stepped portion of the pad opening 132C, the sealing resin 14 is broken by surrounding the pad opening 132C with the reinforcing resin 15 and the like. Propagation to the region can be avoided.
- the pad opening 132 ⁇ / b> C is separated from the surroundings by providing an air gap, or the pad opening 132 ⁇ / b> C is divided from the surroundings by providing both the reinforcing resin 15 and the air gap. May be.
- the imaging device 11 as described above is applied to various electronic devices such as an imaging system such as a digital still camera and a digital video camera, a mobile phone having an imaging function, or other devices having an imaging function. can do.
- FIG. 30 is a block diagram illustrating a configuration example of an imaging device mounted on an electronic device.
- the imaging apparatus 201 includes an optical system 202, an imaging element 203, a signal processing circuit 204, a monitor 205, and a memory 206, and can capture still images and moving images.
- the optical system 202 includes one or more lenses, guides image light (incident light) from a subject to the image sensor 203, and forms an image on a light receiving surface (sensor unit) of the image sensor 203.
- the image sensor 11 described above is applied as the image sensor 203.
- the image sensor 203 electrons are accumulated for a certain period according to the image formed on the light receiving surface via the optical system 202. Then, a signal corresponding to the electrons accumulated in the image sensor 203 is supplied to the signal processing circuit 204.
- the signal processing circuit 204 performs various signal processing on the pixel signal output from the image sensor 203.
- An image (image data) obtained by performing signal processing by the signal processing circuit 204 is supplied to the monitor 205 and displayed, or supplied to the memory 206 and stored (recorded).
- the imaging apparatus 201 configured as described above, by applying the above-described imaging element 11, for example, as a result of improvement in characteristics of the imaging element 11, better imaging can be performed.
- FIG. 31 is a diagram showing a usage example in which the above-described image sensor is used.
- the above-described image sensor (imaging device 11) can be used in various cases for sensing light such as visible light, infrared light, ultraviolet light, and X-ray as follows.
- Devices for taking images for viewing such as digital cameras and mobile devices with camera functions
- Devices used for traffic such as in-vehicle sensors that capture the back, surroundings, and interiors of vehicles, surveillance cameras that monitor traveling vehicles and roads, and ranging sensors that measure distances between vehicles, etc.
- Equipment used for home appliances such as TVs, refrigerators, air conditioners, etc. to take pictures and operate the equipment according to the gestures ⁇ Endoscopes, equipment that performs blood vessel photography by receiving infrared light, etc.
- Equipment used for medical and health care ⁇ Security equipment such as security surveillance cameras and personal authentication cameras ⁇ Skin measuring instrument for photographing skin and scalp photography Such as a microscope to do beauty Equipment used for sports-Equipment used for sports such as action cameras and wearable cameras for sports applications-Used for agriculture such as cameras for monitoring the condition of fields and crops apparatus
- this technique can also take the following structures.
- a sensor substrate provided with an effective pixel region in which a plurality of pixels are arranged in an array;
- a transparent sealing member for sealing the surface of the sensor substrate on the effective pixel region side;
- a first adhesive member that adheres the sensor substrate and the sealing member in a region including at least the effective pixel region;
- a second adhesive member having a higher rigidity than the first adhesive member, the sensor substrate and the sealing member being adhered in an outer peripheral region outside the effective pixel region when viewed in a plan view.
- the product of the adhesive force per unit area by the first adhesive member and the second adhesive member in the outer peripheral region and the adhesive area bonded in the outer peripheral region An imaging device that is set to be larger than a product of an adhesive force per unit area by the first adhesive member in the effective pixel region and an adhesive area bonded in the effective pixel region.
- the second adhesive member is disposed in a region including the chip end of the imaging device in the outer peripheral region, and is formed to have a discontinuous portion when the imaging device is viewed in plan.
- the second adhesive member is continuously formed so as to surround the effective pixel region side inside the chip end of the image sensor when the image sensor is viewed in a plane.
- the imaging device described. The second adhesive member is formed at a plurality of locations so as to be scattered along the outer periphery of the image pickup element inside the chip end of the image pickup element when the image pickup element is viewed in a plane.
- the imaging device according to (5) or (6). Any one of (1) to (9) above, wherein a digging portion is provided in at least one of the outer peripheral regions of the sensor substrate and the sealing member, and the first adhesive member is embedded in the digging portion.
- a concave portion is formed in a central region of the sensor substrate where the effective pixel region is provided, and a convex portion of the sealing member formed into a convex shape is formed through the first adhesive member to match the shape of the concave portion.
- the imaging device according to any one of (1) to (10), wherein the sealing member is stacked on the sensor substrate.
- a pad opening for opening a pad is formed in the outer peripheral region of the sensor substrate, and a thin film is formed in the pad opening.
- a pad opening for opening a pad is formed, and the pad opening is formed so as to open in multiple stages.
- a pad opening for opening a pad is formed, and a structure is avoided in which a step is formed in the first adhesive member at the step of the pad opening. The imaging device according to any one of (1) to (12).
- a sensor substrate provided with an effective pixel region in which a plurality of pixels are arranged in an array;
- a transparent sealing member for sealing the surface of the sensor substrate on the effective pixel region side;
- a first adhesive member that adheres the sensor substrate and the sealing member in a region including at least the effective pixel region;
- a second adhesive member having a higher rigidity than the first adhesive member, the sensor substrate and the sealing member being adhered in an outer peripheral region outside the effective pixel region when viewed in a plan view.
- An image pickup device manufacturing method wherein the image pickup element is set to be larger than a product of an adhesive force per unit area by the first adhesive member in the effective pixel region and an adhesive area bonded in the effective pixel region,
- the second adhesive member is formed on one of the sensor substrate and the sealing member so as to have a discontinuous portion in the outer peripheral region, Forming the first adhesive member on the entire surface other than the region where the second adhesive member is formed;
- a manufacturing method including a step of bonding the sensor substrate and the sealing member by the first adhesive member and the second adhesive member.
- a sensor substrate provided with an effective pixel region in which a plurality of pixels are arranged in an array;
- a transparent sealing member for sealing the surface of the sensor substrate on the effective pixel region side;
- a first adhesive member that adheres the sensor substrate and the sealing member in a region including at least the effective pixel region;
- a second adhesive member having a higher rigidity than the first adhesive member, the sensor substrate and the sealing member being adhered in an outer peripheral region outside the effective pixel region when viewed in a plan view.
- An image pickup device manufacturing method wherein the image pickup element is set to be larger than a product of an adhesive force per unit area by the first adhesive member in the effective pixel region and an adhesive area bonded in the effective pixel region,
- the second adhesive member is formed so as to be disposed in a region other than the location that becomes the chip end of the imaging element in the outer peripheral region, Forming the first adhesive member on the entire surface other than the region where the second adhesive member is formed;
- the sensor substrate and the sealing member are joined by the first adhesive member and the second adhesive member,
- the manufacturing method including the process of dicing in the location used as the chip end of the said image pick-up element.
- a sensor substrate provided with an effective pixel region in which a plurality of pixels are arranged in an array;
- a transparent sealing member for sealing the surface of the sensor substrate on the effective pixel region side;
- a first adhesive member that adheres the sensor substrate and the sealing member in a region including at least the effective pixel region;
- the sensor substrate and the sealing member are bonded to each other in an outer peripheral region that is outside the effective pixel region when viewed in a plan view, and a second adhesive member having higher rigidity than the first adhesive member is provided.
- An electronic apparatus comprising: an imaging device that is set to be larger than a product of an adhesive force per unit area by the first adhesive member in the effective pixel region and an adhesive area bonded in the effective pixel region.
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Abstract
Description
・自動停止等の安全運転や、運転者の状態の認識等のために、自動車の前方や後方、周囲、車内等を撮影する車載用センサ、走行車両や道路を監視する監視カメラ、車両間等の測距を行う測距センサ等の、交通の用に供される装置
・ユーザのジェスチャを撮影して、そのジェスチャに従った機器操作を行うために、TVや、冷蔵庫、エアーコンディショナ等の家電に供される装置
・内視鏡や、赤外光の受光による血管撮影を行う装置等の、医療やヘルスケアの用に供される装置
・防犯用途の監視カメラや、人物認証用途のカメラ等の、セキュリティの用に供される装置
・肌を撮影する肌測定器や、頭皮を撮影するマイクロスコープ等の、美容の用に供される装置
・スポーツ用途等向けのアクションカメラやウェアラブルカメラ等の、スポーツの用に供される装置
・畑や作物の状態を監視するためのカメラ等の、農業の用に供される装置
(1)
複数の画素がアレイ状に配置された有効画素領域が設けられるセンサ基板と、
前記センサ基板の前記有効画素領域側の面を封止する透明な封止部材と、
少なくとも前記有効画素領域を含む領域において前記センサ基板および前記封止部材を接着する第1の接着部材と、
平面的に見たときに前記有効画素領域よりも外側となる外周領域において前記センサ基板および前記封止部材を接着し、前記第1の接着部材よりも剛性の高い第2の接着部材と
を備え、
前記外周領域における前記第1の接着部材および前記第2の接着部材による単位面積あたりの接着力と、前記外周領域において接着される接着面積との積が、
前記有効画素領域における前記第1の接着部材による単位面積あたりの接着力と、前記有効画素領域において接着される接着面積との積よりも大きく設定される
撮像素子。
(2)
前記第2の接着部材は、前記外周領域において前記撮像素子のチップ端を含む領域に配置され、かつ、前記撮像素子を平面的に見たときに不連続となる箇所を有して形成される
上記(1)に記載の撮像素子。
(3)
前記第2の接着部材は、前記撮像素子を平面的に見たときに対向する2辺に沿う少なくとも2カ所に形成される
上記(1)または(2)に記載の撮像素子。
(4)
前記第2の接着部材は、前記撮像素子を平面的に見たときに前記チップ端の外周に沿って点在するように複数個所に形成される
上記(1)または(2)に記載の撮像素子。
(5)
前記第2の接着部材は、前記外周領域において前記撮像素子のチップ端を含まない領域に配置される
上記(1)に記載の撮像素子。
(6)
前記第2の接着部材は、前記撮像素子を平面的に見たときに不連続となる箇所を有して形成される
上記(5)に記載の撮像素子。
(7)
前記第2の接着部材は、前記撮像素子を平面的に見たときに対向する2辺に沿って、前記撮像素子のチップ端よりも内側に形成される
上記(5)または(6)に記載の撮像素子。
(8)
前記第2の接着部材は、前記撮像素子を平面的に見たときに前記撮像素子のチップ端よりも内側で、前記有効画素領域側を囲うように連続的に形成される
上記(5)に記載の撮像素子。
(9)
前記第2の接着部材は、前記撮像素子を平面的に見たときに前記撮像素子のチップ端よりも内側で、前記撮像素子の外周に沿って点在するように複数個所に形成される
上記(5)または(6)に記載の撮像素子。
(10)
前記センサ基板および前記封止部材のうち、少なくとも一方の前記外周領域に掘り込み部を設け、前記掘り込み部に、前記第1の接着部材を埋め込む
上記(1)から(9)までのいずれかに記載の撮像素子。
(11)
前記センサ基板の前記有効画素領域が設けられる中央領域に凹部を形成し、前記第1の接着部材を介して、前記凹部の形状合わせて凸形状に形成された前記封止部材の凸部分が入り込むように、前記センサ基板に前記封止部材が積層される
上記(1)から(10)までのいずれかに記載の撮像素子。
(12)
前記センサ基板の前記外周領域において、前記センサ基板側から前記封止部材まで到達するようにアンカー部材が形成される
上記(11)に記載の撮像素子。
(13)
前記センサ基板の前記外周領域において、パッドを開口するためのパッド開口部が形成されており、前記パッド開口部に薄膜が成膜される
上記(1)から(12)までのいずれかに記載の撮像素子。
(14)
前記センサ基板の前記外周領域において、パッドを開口するためのパッド開口部が形成されており、前記パッド開口部が多段階で開口するように形成される
上記(1)から(12)までのいずれかに記載の撮像素子。
(15)
前記センサ基板の前記外周領域において、パッドを開口するためのパッド開口部が形成されており、前記パッド開口部の段差部で前記第1の接着部材に段差が形成されることを回避する構造となっている
上記(1)から(12)までのいずれかに記載の撮像素子。
(16)
複数の画素がアレイ状に配置された有効画素領域が設けられるセンサ基板と、
前記センサ基板の前記有効画素領域側の面を封止する透明な封止部材と、
少なくとも前記有効画素領域を含む領域において前記センサ基板および前記封止部材を接着する第1の接着部材と、
平面的に見たときに前記有効画素領域よりも外側となる外周領域において前記センサ基板および前記封止部材を接着し、前記第1の接着部材よりも剛性の高い第2の接着部材と
を備え、
前記外周領域における前記第1の接着部材および前記第2の接着部材による単位面積あたりの接着力と、前記外周領域において接着される接着面積との積が、
前記有効画素領域における前記第1の接着部材による単位面積あたりの接着力と、前記有効画素領域において接着される接着面積との積よりも大きく設定される
撮像素子の製造方法であって、
前記センサ基板および前記封止部材のいずれか一方に、前記外周領域において不連続となる箇所を有するように前記第2の接着部材を形成し、
前記第2の接着部材が形成された領域以外の全面に前記第1の接着部材を形成し、
前記第1の接着部材および前記第2の接着部材により前記センサ基板と前記封止部材とを接着する
工程を含む製造方法。
(17)
複数の画素がアレイ状に配置された有効画素領域が設けられるセンサ基板と、
前記センサ基板の前記有効画素領域側の面を封止する透明な封止部材と、
少なくとも前記有効画素領域を含む領域において前記センサ基板および前記封止部材を接着する第1の接着部材と、
平面的に見たときに前記有効画素領域よりも外側となる外周領域において前記センサ基板および前記封止部材を接着し、前記第1の接着部材よりも剛性の高い第2の接着部材と
を備え、
前記外周領域における前記第1の接着部材および前記第2の接着部材による単位面積あたりの接着力と、前記外周領域において接着される接着面積との積が、
前記有効画素領域における前記第1の接着部材による単位面積あたりの接着力と、前記有効画素領域において接着される接着面積との積よりも大きく設定される
撮像素子の製造方法であって、
前記撮像素子が個片化される前のウェハレベルで、
前記第2の接着部材を、前記外周領域における前記撮像素子のチップ端となる箇所以外の領域に配置されるように形成し、
前記第1の接着部材を、前記第2の接着部材が形成された領域以外の全面に形成し、
前記第1の接着部材および前記第2の接着部材により前記センサ基板および前記封止部材を接合し、
前記撮像素子のチップ端となる箇所でダイシングする
工程を含む製造方法。
(18)
複数の画素がアレイ状に配置された有効画素領域が設けられるセンサ基板と、
前記センサ基板の前記有効画素領域側の面を封止する透明な封止部材と、
少なくとも前記有効画素領域を含む領域において前記センサ基板および前記封止部材を接着する第1の接着部材と、
平面的に見たときに前記有効画素領域よりも外側となる外周領域において前記センサ基板および前記封止部材を接着し、前記第1の接着部材よりも剛性の高い第2の接着部材と
を有し、
前記外周領域における前記第1の接着部材および前記第2の接着部材による単位面積あたりの接着力と、前記外周領域において接着される接着面積との積が、
前記有効画素領域における前記第1の接着部材による単位面積あたりの接着力と、前記有効画素領域において接着される接着面積との積よりも大きく設定される
撮像素子を備える電子機器。
Claims (18)
- 複数の画素がアレイ状に配置された有効画素領域が設けられるセンサ基板と、
前記センサ基板の前記有効画素領域側の面を封止する透明な封止部材と、
少なくとも前記有効画素領域を含む領域において前記センサ基板および前記封止部材を接着する第1の接着部材と、
平面的に見たときに前記有効画素領域よりも外側となる外周領域において前記センサ基板および前記封止部材を接着し、前記第1の接着部材よりも剛性の高い第2の接着部材と
を備え、
前記外周領域における前記第1の接着部材および前記第2の接着部材による単位面積あたりの接着力と、前記外周領域において接着される接着面積との積が、
前記有効画素領域における前記第1の接着部材による単位面積あたりの接着力と、前記有効画素領域において接着される接着面積との積よりも大きく設定される
撮像素子。 - 前記第2の接着部材は、前記外周領域において前記撮像素子のチップ端を含む領域に配置され、かつ、前記撮像素子を平面的に見たときに不連続となる箇所を有して形成される
請求項1に記載の撮像素子。 - 前記第2の接着部材は、前記撮像素子を平面的に見たときに対向する2辺に沿う少なくとも2カ所に形成される
請求項2に記載の撮像素子。 - 前記第2の接着部材は、前記撮像素子を平面的に見たときに前記チップ端の外周に沿って点在するように複数個所に形成される
請求項2に記載の撮像素子。 - 前記第2の接着部材は、前記外周領域において前記撮像素子のチップ端を含まない領域に配置される
請求項1に記載の撮像素子。 - 前記第2の接着部材は、前記撮像素子を平面的に見たときに不連続となる箇所を有して形成される
請求項5に記載の撮像素子。 - 前記第2の接着部材は、前記撮像素子を平面的に見たときに対向する2辺に沿って、前記撮像素子のチップ端よりも内側に形成される
請求項6に記載の撮像素子。 - 前記第2の接着部材は、前記撮像素子を平面的に見たときに前記撮像素子のチップ端よりも内側で、前記有効画素領域側を囲うように連続的に形成される
請求項5に記載の撮像素子。 - 前記第2の接着部材は、前記撮像素子を平面的に見たときに前記撮像素子のチップ端よりも内側で、前記撮像素子の外周に沿って点在するように複数個所に形成される
請求項6に記載の撮像素子。 - 前記センサ基板および前記封止部材のうち、少なくとも一方の前記外周領域に掘り込み部を設け、前記掘り込み部に、前記第1の接着部材を埋め込む
請求項1に記載の撮像素子。 - 前記センサ基板の前記有効画素領域が設けられる中央領域に凹部を形成し、前記第1の接着部材を介して、前記凹部の形状合わせて凸形状に形成された前記封止部材の凸部分が入り込むように、前記センサ基板に前記封止部材が積層される
請求項1に記載の撮像素子。 - 前記センサ基板の前記外周領域において、前記センサ基板側から前記封止部材まで到達するようにアンカー部材が形成される
請求項11に記載の撮像素子。 - 前記センサ基板の前記外周領域において、パッドを開口するためのパッド開口部が形成されており、前記パッド開口部に薄膜が成膜される
請求項1に記載の撮像素子。 - 前記センサ基板の前記外周領域において、パッドを開口するためのパッド開口部が形成されており、前記パッド開口部が多段階で開口するように形成される
請求項1に記載の撮像素子。 - 前記センサ基板の前記外周領域において、パッドを開口するためのパッド開口部が形成されており、前記パッド開口部の段差部で前記第1の接着部材に段差が形成されることを回避する構造となっている
請求項1に記載の撮像素子。 - 複数の画素がアレイ状に配置された有効画素領域が設けられるセンサ基板と、
前記センサ基板の前記有効画素領域側の面を封止する透明な封止部材と、
少なくとも前記有効画素領域を含む領域において前記センサ基板および前記封止部材を接着する第1の接着部材と、
平面的に見たときに前記有効画素領域よりも外側となる外周領域において前記センサ基板および前記封止部材を接着し、前記第1の接着部材よりも剛性の高い第2の接着部材と
を備え、
前記外周領域における前記第1の接着部材および前記第2の接着部材による単位面積あたりの接着力と、前記外周領域において接着される接着面積との積が、
前記有効画素領域における前記第1の接着部材による単位面積あたりの接着力と、前記有効画素領域において接着される接着面積との積よりも大きく設定される
撮像素子の製造方法であって、
前記センサ基板および前記封止部材のいずれか一方に、前記外周領域において不連続となる箇所を有するように前記第2の接着部材を形成し、
前記第2の接着部材が形成された領域以外の全面に前記第1の接着部材を形成し、
前記第1の接着部材および前記第2の接着部材により前記センサ基板と前記封止部材とを接着する
工程を含む製造方法。 - 複数の画素がアレイ状に配置された有効画素領域が設けられるセンサ基板と、
前記センサ基板の前記有効画素領域側の面を封止する透明な封止部材と、
少なくとも前記有効画素領域を含む領域において前記センサ基板および前記封止部材を接着する第1の接着部材と、
平面的に見たときに前記有効画素領域よりも外側となる外周領域において前記センサ基板および前記封止部材を接着し、前記第1の接着部材よりも剛性の高い第2の接着部材と
を備え、
前記外周領域における前記第1の接着部材および前記第2の接着部材による単位面積あたりの接着力と、前記外周領域において接着される接着面積との積が、
前記有効画素領域における前記第1の接着部材による単位面積あたりの接着力と、前記有効画素領域において接着される接着面積との積よりも大きく設定される
撮像素子の製造方法であって、
前記撮像素子が個片化される前のウェハレベルで、
前記第2の接着部材を、前記外周領域における前記撮像素子のチップ端となる箇所以外の領域に配置されるように形成し、
前記第1の接着部材を、前記第2の接着部材が形成された領域以外の全面に形成し、
前記第1の接着部材および前記第2の接着部材により前記センサ基板および前記封止部材を接合し、
前記撮像素子のチップ端となる箇所でダイシングする
工程を含む製造方法。 - 複数の画素がアレイ状に配置された有効画素領域が設けられるセンサ基板と、
前記センサ基板の前記有効画素領域側の面を封止する透明な封止部材と、
少なくとも前記有効画素領域を含む領域において前記センサ基板および前記封止部材を接着する第1の接着部材と、
平面的に見たときに前記有効画素領域よりも外側となる外周領域において前記センサ基板および前記封止部材を接着し、前記第1の接着部材よりも剛性の高い第2の接着部材と
を有し、
前記外周領域における前記第1の接着部材および前記第2の接着部材による単位面積あたりの接着力と、前記外周領域において接着される接着面積との積が、
前記有効画素領域における前記第1の接着部材による単位面積あたりの接着力と、前記有効画素領域において接着される接着面積との積よりも大きく設定される
撮像素子を備える電子機器。
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WO2021095193A1 (ja) * | 2019-11-14 | 2021-05-20 | 株式会社ティエーブル | イメージセンサモジュール、及び、イメージセンサモジュールの製造方法 |
WO2023067891A1 (ja) * | 2021-10-18 | 2023-04-27 | ソニーセミコンダクタソリューションズ株式会社 | 半導体装置、固体撮像装置及び半導体装置の製造方法 |
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US20190172863A1 (en) | 2019-06-06 |
CN109952647B (zh) | 2023-03-17 |
US10748947B2 (en) | 2020-08-18 |
KR102455438B1 (ko) | 2022-10-14 |
KR20190034553A (ko) | 2019-04-02 |
CN109952647A (zh) | 2019-06-28 |
JPWO2018030140A1 (ja) | 2019-06-06 |
TW201806045A (zh) | 2018-02-16 |
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