WO2022158408A1 - 半導体装置、および、半導体装置の製造方法 - Google Patents
半導体装置、および、半導体装置の製造方法 Download PDFInfo
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- H10W20/0234—Manufacture or treatment of interconnections within wafers or substrates the interconnections being through-semiconductor vias comprising etching via holes that stop on pads or on electrodes
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- H10W20/023—Manufacture or treatment of interconnections within wafers or substrates the interconnections being through-semiconductor vias
- H10W20/0242—Manufacture or treatment of interconnections within wafers or substrates the interconnections being through-semiconductor vias comprising etching via holes from the back sides of the chips, wafers or substrates
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- H10W20/0261—Manufacture or treatment of interconnections within wafers or substrates the interconnections being through-semiconductor vias characterised by the filling method or the material of the conductive fill
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- H10W20/211—Through-semiconductor vias, e.g. TSVs
- H10W20/212—Top-view shapes or dispositions, e.g. top-view layouts of the vias
- H10W20/2125—Top-view shapes
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- H10W20/211—Through-semiconductor vias, e.g. TSVs
- H10W20/216—Through-semiconductor vias, e.g. TSVs characterised by dielectric material at least partially filling the via holes, e.g. covering the through-semiconductor vias in the via holes
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- H10W20/41—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes characterised by their conductive parts
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- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
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- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
- H10W70/65—Shapes or dispositions of interconnections
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- H10W72/931—Shapes of bond pads
- H10W72/932—Plan-view shape, i.e. in top view
Definitions
- This technology relates to semiconductor devices. More specifically, the present invention relates to a semiconductor device that is three-dimensionally mounted and a method of manufacturing the semiconductor device.
- through electrodes embedded in through holes of a semiconductor substrate via an insulating film are sometimes used.
- the through electrodes are generally larger in size than the surface wirings wired on the surface of the semiconductor substrate, and the semiconductor substrate and the through electrodes have different coefficients of thermal expansion (CTE). Therefore, a large thermal stress (stress) may occur around the through electrode. This thermal stress may change the characteristics of the surrounding semiconductor elements.
- thermal stress due to temperature cycles may cause cracks in the insulating film in the through holes, separation between the through electrodes and the pads, and the like.
- a semiconductor device has been proposed in which the penetrating electrodes are made cup-shaped and filled with a protective film, leaving gaps without filling completely (see, for example, Patent Document 1). .).
- thermal stress is reduced by leaving voids when filling the cup-shaped penetrating electrodes.
- the thermal stress may be insufficiently reduced, and in such cases, it is difficult to further reduce the thermal stress.
- This technology was created in view of this situation, and aims to reduce thermal stress in semiconductor devices provided with through electrodes.
- a second through hole penetrating the semiconductor substrate from the back surface to the front surface of the semiconductor substrate and having a side wall covered with an insulating film, and a side wall of the second through hole. and a second inner through electrode formed along the first inner through electrode, wherein the area in which the second inner through electrode is formed is different from the area in which the first inner through electrode is formed.
- the first side surface may further include an outer through electrode formed between the semiconductor substrate and the insulating film. This brings about the effect of reducing crosstalk.
- the first side surface may further include an external terminal formed on the back surface and a back wiring having one end connected to the external terminal and the other end connected to the first inner through electrode. good. This provides an effect of transmitting signals to and from the outside.
- a predetermined number of semiconductor elements are arranged in the wiring layer, and among the predetermined number of semiconductor elements, a specific semiconductor element is closest to the first through hole, In one through-hole, the first inner through-electrode may be arranged at a position closest to the specific semiconductor element.
- a predetermined number of semiconductor elements are arranged in the wiring layer, and among the predetermined number of semiconductor elements, a specific semiconductor element is closest to the first through hole, In one through-hole, the first inner through-electrode may be arranged at a position farthest from the specific semiconductor element. This brings about the effect of reducing characteristic fluctuations of the semiconductor element due to thermal stress.
- the first inner through-electrode may be formed at each of a plurality of locations on the side wall of the first through-hole. This brings about an effect that a plurality of back surface wirings are wired.
- the potentials of the first inner through electrodes at the plurality of locations may be the same. This brings about the effect of further reducing the thermal stress.
- the potentials of the first through electrodes at the plurality of locations may be different. This brings about the effect of enabling high integration.
- the first side surface further includes a back wiring connected to the first inner through-electrode, and at least one of line width and thickness of the first inner through-electrode and the back wiring is different.
- the shape of the through hole may be an ellipse when viewed from a direction perpendicular to the back surface, and the first inner through electrode may be formed on the minor axis of the ellipse. . This brings about the effect of facilitating manufacture.
- the first inner through electrode may be formed along part of the side wall and part of the bottom of the first through hole. This brings about the effect of reducing the thermal stress.
- the wiring layer may have a pad formed along a portion of the bottom portion. This provides an effect that the first inner through electrode is connected to the wiring layer.
- the first inner through electrodes may be formed in portions other than the slits. This brings about the effect of increasing the area of the first inner through electrode.
- the insulating film may cover a part of the side wall of the through hole, and the first inner through electrode may be formed along the side wall covered with the insulating film. good. This brings about the effect of reducing heat stress.
- the first side surface may further include an inorganic film covering the sidewall of the through hole, and the insulating film may cover a part of the inorganic film. This brings about the effect that the portion not covered with the insulating film is covered with the inorganic film.
- the insulating film may cover a plurality of regions of the side wall of the through hole. This brings about an effect that it becomes possible to deal with various layouts of the conductive film and the through holes.
- the area of the portion of the side wall covered with the insulating film may be different from the area of the portion not covered with the insulating film. This brings about an effect that it becomes possible to deal with various layouts of the conductive film and the through holes.
- FIG. 1 is an example of a plan view of a semiconductor device according to a first embodiment of the present technology
- FIG. It is a figure for demonstrating the manufacturing method to film-forming of the insulating film in 1st Embodiment of this technique.
- FIG. It is a figure for demonstrating the manufacturing method to film-forming of the electrically conductive film in 1st Embodiment of this technique.
- It is a flow chart which shows an example of a manufacturing method in a 1st embodiment of this art.
- FIG. 5 It is an example of a top view of a semiconductor device in a 5th embodiment of this art. It is an example of a top view of a semiconductor device in a 6th embodiment of this art. It is an example of a top view of a semiconductor device in a 7th embodiment of this art. It is an example of the top view of the semiconductor device in an 8th embodiment of this art. It is an example of a top view of a semiconductor device in a 9th embodiment of this art. It is an example of a sectional view showing an example of composition of a semiconductor device in a 9th embodiment of this art.
- FIG. 1 It is an example of a top view of a semiconductor device in a 5th embodiment of this art. It is an example of a top view of a semiconductor device in a 6th embodiment of this art. It is an example of a top view of a semiconductor device in a 7th embodiment of this art. It is an example of the top view of the semiconductor device in an 8th embodiment of this art. It is an example of
- 20A is an example of a top view and a perspective view of a semiconductor device according to a tenth embodiment of the present technology; It is an example of a sectional view of a semiconductor device in a tenth embodiment of this art. It is a figure for demonstrating the manufacturing method to removal of the insulating film in 10th Embodiment of this technique. It is a figure for demonstrating the manufacturing method to formation of the resist in 10th Embodiment of this technique. It is a figure for demonstrating the manufacturing method to formation of the protective film and bump in 10th Embodiment of this technique. It is an example of a sectional view of a semiconductor device in the 1st modification of a 10th embodiment of this art. FIG.
- 21A is an example of a perspective view and a top view of a semiconductor device according to a second modification of the tenth embodiment of the present technology; It is an example of the sectional view of the semiconductor device in the 2nd modification of the 10th embodiment of this art. It is an example of the top view of the semiconductor device in the 3rd modification of the 10th embodiment of this art. It is a figure showing an example of lamination structure of a solid imaging device in an embodiment of this art.
- 1 is a block diagram showing an example of a schematic configuration of a vehicle control system;
- FIG. FIG. 4 is an explanatory diagram showing an example of installation positions of an outside information detection unit and an imaging unit;
- 1 is a diagram showing an example of a schematic configuration of an endoscopic surgery system;
- FIG. 32 is a block diagram showing an example of the functional configuration of the camera head and CCU shown in FIG. 31;
- First Embodiment Example in which Through Electrodes are Formed on Part of Side Walls of Through Holes
- Second Embodiment Example of forming a plurality of through electrodes having different areas
- Third Embodiment Example in which through electrodes are formed on part of the side wall of the through hole and part of the side wall of the through hole
- Fourth Embodiment Example in which through electrodes are formed on a part of the inner wall of the insulating film by changing the layout
- FIG. 1 is a cross-sectional view showing one configuration example of a semiconductor device 100 according to a first embodiment of the present technology.
- This semiconductor device 100 includes a protective film 110 , a bump 120 , a through electrode 141 , a rear wiring 142 , an insulating film 160 , a semiconductor substrate 170 and a wiring layer 180 .
- various circuits, elements, and devices such as signal processing circuits, memories, and image sensors are assumed.
- the surface on which the wiring layer 180 is formed is referred to as "front surface”, and the surface opposite to the front surface is referred to as "back surface”.
- An axis perpendicular to the surface of the semiconductor substrate 170 is the Z-axis, and a predetermined axis parallel to the surface is the X-axis.
- An axis perpendicular to the X-axis and the Z-axis is defined as the Y-axis. This figure shows a cross-sectional view of the semiconductor device 100 viewed from the Y-axis direction.
- a through-hole 130 is formed in the semiconductor substrate 170 to extend from the back surface to the front surface of the semiconductor substrate 170 along the Z-axis direction.
- the side wall of through hole 130 and the back surface of semiconductor substrate 170 are covered with insulating film 160 .
- coordinates X0 and X4 correspond to the position of the outer wall of the insulating film 160 (in other words, the side wall of the through-hole 130 before coating).
- coordinates X1 and X3 correspond to the position of the inner wall of the insulating film 160 (in other words, the side wall of the through-hole 130 after coating).
- the position of the side wall of the through-hole 130 differs before and after coating, the position after coating (that is, the inner wall of the insulating film 160) is treated as the side wall of the through-hole 130 unless otherwise specified.
- a portion of the through-hole 130 closest to the surface is referred to as a “bottom portion” of the through-hole 130 .
- the portion of coordinate Z2 corresponds to the bottom.
- an inorganic film or a resin film having a polyimide, acrylic, silicone, or epoxy group as a skeleton is used.
- silicon dioxide (SiO 2 ) silicon dioxide (SiO 2 ), silicon nitride (SiN), silicon monoxide nitride (SiON), low-k film and the like are used.
- the back surface of the semiconductor substrate 170 is covered with the protective film 110 except for the area that serves as the connection with the outside.
- the protective film 110 polyimide, acryl, silicone, a resin film having an epoxy group as a skeleton, or the like is used.
- a bump 120, a pillar of a conductive film, or the like is used for connection with the outside.
- a void surrounded by the protective film 110 , the insulating film 160 and the wiring layer 180 is formed in the through hole 130 .
- a conductive film is formed as a through electrode 141 along part of the side wall and part of the bottom of the through hole 130 .
- the conductive film formed from the coordinate Z0 to the coordinate Z2 in the Z-axis direction of the drawing corresponds to the through electrode 141 .
- the conductive film formed from coordinate X2 to coordinate X3 corresponds to the through electrode 141 .
- Copper (Cu), titanium (Ti), tantalum (Ta), aluminum (Al), tungsten (W), nickel (Ni), ruthenium (Ru), cobalt (Co), etc. are used as the material of this conductive film. .
- the percentage of the portion of the side wall of the through hole 130 where the through electrode 141 is formed can be freely changed as needed, and is preferably 10 to 70 percent (%) of the surface area of the side wall.
- the through-hole 130 is an example of the first through-hole described in the claims
- the through-electrode 141 is an example of the first inner through-electrode described in the claims.
- a back wiring 142 is formed by patterning a conductive film.
- the line width and thickness of the back wiring 142 are approximately the same as those of the through electrode 141 .
- one end of the back wiring 142 is connected to the bump 120 and the other end is connected to the through electrode 141 .
- the back wiring 142 may be formed simultaneously using the same material as the through electrode 141, or may be formed separately.
- pads 181 and surface wirings 182 are also formed on the wiring layer 180 .
- Signal processing circuits, memories, image sensors, and the like are used as semiconductor devices.
- the wiring layer 180 is a single layer, and the pad 181 is formed in the portion of the bottom of the through hole 130 where the through electrode 141 is arranged. Copper (Cu), titanium (Ti), tantalum (Ta), aluminum (Al), tungsten (W), nickel (Ni), ruthenium (Ru), cobalt (Co), or the like is used as the material of the pad 181 .
- a plurality of wiring layers can also be formed.
- the pad 181 can be arranged in the first wiring layer closest to the surface, or can be arranged in the second wiring layer or later.
- the pad 181 may be formed in a single wiring layer, or may be formed over a plurality of wiring layers.
- the pad 181 is formed on a part of the bottom of the through-hole 130 in the figure, the pad 181 can be formed on the entire bottom. When formed in a part of the bottom portion, dry etching of the through hole 130 cannot be stopped at the pad 181, but the area where the pad 181 is exposed can be reduced. Therefore, generation of metal-based reaction products and charging damage can be improved.
- a predetermined number of semiconductor elements such as transistors 183 are arranged on the wiring layer 180 . It is assumed that the transistor 183 among the semiconductor elements in the wiring layer 180 is closest to the through hole 130 . In addition, the through electrode 141 is arranged at the position closest to the transistor 183 in the through hole 130 (the coordinate X3 at the right end of the through hole 130 in the drawing).
- the thermal stress is lower than that in the first comparative example, strong thermal stress is generated particularly in the circumferential direction and at the bottom.
- the through electrode 141 is formed only on the side wall and part of the bottom of the through hole 130, so that the thermal stress can be reduced more than in the second comparative example.
- the wiring characteristics of the through electrodes depend on the diameter of the through electrodes and the thickness of the conductive film.
- the through electrode 141 is formed only on the side wall and part of the bottom of the through hole 130, so that the wiring characteristics can be controlled independently from the diameter of the through electrode. As a result, impedance matching with the back wiring 142 can be easily achieved, and transmission characteristics of high-frequency signals can be improved.
- FIG. 2 is an example of a plan view of the semiconductor device 100 according to the first embodiment of the present technology. This figure shows a plan view when the XY plane of the coordinate Z0 in FIG. 1 is viewed from the Z-axis direction.
- the through hole 130 is circular, and the through electrode 141 is arranged at the coordinate X3 closest to the bump 120 on the side wall thereof.
- the through-electrode 141 and the bump 120 are connected by the back wiring 142 at the shortest distance.
- the linear conductive film on the left side of the coordinate X2 corresponds to the through electrode 141, and the linear conductive film on the right side of the coordinate corresponds to the rear wiring 142.
- FIG. 3 is a diagram for explaining a manufacturing method up to deposition of the insulating film 160 according to the first embodiment of the present technology.
- the manufacturing system forms the wiring layer 180 on the surface of the semiconductor substrate 170 by the existing technology. Pads 181 are arranged only in regions where through electrodes 141 are arranged.
- the semiconductor substrate 170 is thinned by grinding, dry etching, or wet etching from the rear surface.
- the manufacturing system forms through-holes 130 in the semiconductor substrate 170 by dry etching as illustrated in b in the figure.
- the diameter of the through hole 130 before the insulating film 160 is formed is, for example, about 10 to 100 micrometers ( ⁇ m).
- the manufacturing system forms an insulating film 160 that separates the through electrode 141 and the semiconductor substrate 170, as illustrated in c in FIG.
- This insulating film 160 is formed by PE-CVD (Plasma-Enhanced Chemical Vapor Deposition), ALD (Atomic Layer Deposition), or resin coating.
- the insulating film 160 is formed so that the amount of film formation on the back side of the semiconductor substrate 170 is thicker than the bottom portion of the through hole 130 .
- FIG. 4 is a diagram for explaining a manufacturing method up to formation of the conductive film 140 according to the first embodiment of the present technology.
- the manufacturing system removes the bottom insulating film 160 by dry etching, as exemplified by a in FIG.
- the amount of etching is controlled so that the portion where the pad 181 is not formed does not come into contact with the underlying wiring.
- the insulating film 160 remains on the back surface side due to the difference in film formation amount between the bottom of the through hole and the insulating film 160 on the back surface.
- the through electrodes 141 and the back wiring 142 are simultaneously formed by a so-called semi-additive process.
- the manufacturing system deposits a barrier metal and a seed metal (conductive film 140) by a PE-PVD (Plasma-Enhanced Physical Vapor Deposition) method or a PE-CVD method.
- PE-PVD Pullasma-Enhanced Physical Vapor Deposition
- FIG. 5 is a diagram for explaining a manufacturing method up to formation of the protective film 110 and the bumps 120 according to the first embodiment of the present technology.
- the manufacturing system forms a mask of the resist 190 by lithography in a region (wiring space, etc.) where the conductive film 140 is not finally arranged, and the resist 190 is not formed by electroplating.
- the conductive film 140 in the region is increased.
- the resist 190 is also patterned inside the through electrode 141 so that the conductive film 140 is formed only partially inside the through hole 130 .
- the manufacturing system removes the resist 190 and then removes the conductive film 140 under the resist 190 by wet etching to separate the through electrode 141 and the back wiring 142 .
- the wiring width of the back wiring 142 is equal to or less than the width of the through electrode 141, and is, for example, 3 to 50 micrometers ( ⁇ m).
- the manufacturing system forms a protective film 110 by a coating method and forms bumps 120 for connecting to the outside.
- the manufacturing system adjusts the coating conditions so that the inside of the through-hole 130 is not completely filled with the protective film 110, but is left with a gap.
- FIG. 6 is a flow chart showing an example of a manufacturing method according to the first embodiment of the present technology.
- the manufacturing system forms the wiring layer 180 on the surface of the semiconductor substrate 170 by existing technology (step S901), and forms the through holes 130 in the semiconductor substrate 170 by dry etching (step S902).
- the manufacturing system forms the insulating film 160 by the PE-CVD method or the like (step S903).
- the manufacturing system removes the bottom insulating film 160 by dry etching (step S904), and forms the conductive film 140 by PE-PVD or the like (step S905).
- the manufacturing system forms a mask with the resist 190 to increase the thickness of the conductive film 140 in areas other than the resist 190 (step S906).
- the manufacturing system separates the through electrode 141 and the backside wiring 142 (step S907), and forms the protective film 110 and the bump 120 (step S908).
- step S ⁇ b>908 the manufacturing system executes various processes and finishes manufacturing the semiconductor device 100 .
- the through electrodes 141 are formed along part of the sidewall and part of the bottom of the through hole 130, the through electrodes 141 are formed over the entire sidewall and bottom. Thermal stress can be reduced more than when forming Furthermore, an improvement in the transmission performance of the wiring can be expected by increasing the degree of freedom in designing the wiring.
- the through electrode 141 is formed partially on the side wall and bottom of the through hole 130, but the required thermal stress and resistivity may differ from one through electrode to another.
- the semiconductor device 100 of the second embodiment differs from the first embodiment in that the area of the through electrode is changed according to the application.
- FIG. 7 is a cross-sectional view showing one configuration example of the semiconductor device 100 according to the second embodiment of the present technology.
- a plurality of through holes such as through holes 130 and 131 are formed in the semiconductor device 100 of the second embodiment. Also, the area of the through electrode formed in the through hole is adjusted according to the use of the through hole.
- the area of the conductive film is reduced to reduce the thermal stress.
- the area of the conductive film is increased to reduce the resistivity.
- a through electrode 141 is formed along part of the side wall and part of the bottom inside the through hole 130 .
- the through electrode 143 is formed along the entire sidewall and the entire bottom.
- the through electrodes 143 are connected to the bumps 121 through the back wirings 144 .
- the through-hole 131 is an example of the second through-hole described in the claims
- the through-electrode 143 is an example of the second inner through-electrode described in the claims.
- the thermal stress and resistivity can be adjusted to appropriate values for each through electrode. can be done.
- the through electrode 141 is formed on the inner wall of the insulating film 160, but crosstalk may need to be reduced in some cases.
- the semiconductor device 100 of the third embodiment differs from the first embodiment in that a through electrode is further formed along the side wall of the through hole 130. FIG.
- FIG. 8 is a cross-sectional view showing one configuration example of the semiconductor device 100 according to the third embodiment of the present technology.
- the semiconductor device 100 of the third embodiment differs from the first embodiment in that it further includes a through electrode 151 , a back wiring 152 and a bump 121 .
- the through-electrode 151 is formed on the outer wall of the insulating film 160 (in other words, between the insulating film 160 and the semiconductor substrate 170) inside the through-hole 130 .
- the through electrode 151 is an example of the outer through electrode described in the claims.
- a back surface wiring 152 is wired between the insulating film 160 and the back surface.
- the through-electrodes 151 and the bumps 121 are connected by the back wiring 152 .
- Crosstalk of signals through the semiconductor substrate 170 is reduced by the arrangement of the through electrodes 151 and the back wiring 152 .
- impedance control of the through electrode 141 is facilitated.
- the line width of the through electrode 151 is preferably wider than that of the through electrode 141 . In the figure, the line width is the size in the Y-axis direction.
- FIG. 9 is a diagram for explaining a manufacturing method up to deposition of the insulating film 160 according to the third embodiment of the present technology.
- a in the figure corresponds to b in FIG. 3 of the first embodiment. This is a state in which the through holes 130 are formed in the semiconductor substrate 170 .
- the manufacturing system forms the conductive film 150 by a semi-additive method corresponding to b in FIG. 4 and a and b in FIG.
- the manufacturing system deposits an insulating film 160 and removes the bottom insulating film 160 by dry etching.
- FIG. 10 is a diagram for explaining a manufacturing method up to formation of the protective film 110 and the bumps 120 according to the third embodiment of the present technology.
- the insulating film 160 on the planar portion on the back side of the semiconductor substrate 170 is processed to form a through hole 132 reaching the conductive film 150 .
- the manufacturing system forms a conductive film 140 by a semi-additive method corresponding to b in FIG. 4 and a and b in FIG.
- the through hole 132 formed in FIG. 10a is also filled with a conductive film so that the conductive film 150 can be connected to the outside.
- the manufacturing system forms a protective film 110 by a coating method and forms bumps 121 for connecting to the outside.
- the through holes 130 are not completely filled, but are left with gaps.
- crosstalk can be reduced because the through electrode 151 is further formed between the insulating film 160 and the semiconductor substrate 170 .
- the through electrode 141 is arranged at the coordinate X3 closest to the transistor 183 on the XY plane, but there are cases where it is necessary to reduce the characteristic fluctuation of the semiconductor element.
- the semiconductor device 100 of the fourth embodiment differs from the first embodiment in that the position of the through electrode 141 is changed.
- FIG. 11 is a cross-sectional view showing one configuration example of the semiconductor device 100 according to the fourth embodiment of the present technology. Also in the fourth embodiment, it is assumed that the transistor 183 closest to the through-hole 130 is arranged on the right side of the through-hole 130 as in the first embodiment. On the other hand, the through-electrode 141 is arranged in the through-hole 130 at the farthest position from the transistor 183 (the coordinate X1 at the left end of the through-hole 130 in the figure).
- FIG. 12 is an example of a plan view of the semiconductor device 100 according to the fourth embodiment of the present technology. Since the position of the penetrating electrode 141 is changed from the coordinate X3 to the coordinate X1, the wiring route of the backside wiring 142 is also changed. Although the bump 120 is arranged in the same direction as the direction from the through electrode 141 to the transistor 183 (the right direction in the drawing), the position of the bump 120 is arbitrary and can be arranged in the left direction.
- the through electrode 141 is arranged at the coordinate X1 farthest from the transistor 183, it is possible to reduce characteristic fluctuations of the semiconductor element due to thermal stress.
- the bumps 120 and the pads 181 are connected by the single back wiring 142, but further reduction of thermal stress may be required.
- the semiconductor device 100 according to the fifth embodiment differs from the first embodiment in that a plurality of rear wirings having the same potential are wired.
- FIG. 13 is an example of a plan view of the semiconductor device 100 according to the fifth embodiment of the present technology.
- a plurality of through electrodes such as through electrodes 141-1, 141-2 and 141-3 are arranged on part of the sidewall of the through hole .
- the through electrode 141-1 and the bump 120 are connected by a back wiring 142-1, and the through electrode 141-2 and the bump 120 are connected by a back wiring 142-2.
- the through electrode 141-3 and the bump 120 are connected by a back wiring 142-3. Due to the connection shown in the figure, the potentials of the three backside wirings are the same. Note that the numbers of through electrodes and back wirings are not limited to three.
- the volume per wiring can be reduced and the thermal stress can be further reduced.
- the thermal stress can be further reduced.
- only the current on the surface of the wiring contributes to conduction due to the skin effect, but in the structure shown in the figure, the surface area is increased, so the resistance near the surface can be reduced and the conductivity can be improved. .
- thermal stress can be further reduced.
- the bumps 120 and the pads 181 are connected by the single back surface wiring 142, but there are cases where high integration of the through electrodes is required.
- the semiconductor device 100 according to the sixth embodiment differs from the first embodiment in that a plurality of rear wirings having different potentials are wired.
- FIG. 14 is an example of a plan view of the semiconductor device 100 according to the sixth embodiment of the present technology.
- a plurality of through electrodes such as through electrodes 141-1, 141-2 and 141-3 are arranged on part of the sidewall of the through hole .
- a plurality of bumps such as bumps 120-1, 120-2 and 120-3 are formed on the back surface.
- the through electrode 141-1 and the bump 120-1 are connected by a back wiring 142-1, and the through electrode 141-2 and the bump 120-2 are connected by a back wiring 142-2.
- the through electrode 141-3 and the bump 120-3 are connected by a back wiring 142-3. Due to the connection shown in the figure, the potentials of the three backside wirings have different values. Note that the numbers of through electrodes, backside wirings, and bumps are not limited to three.
- the line width and thickness of the through electrode 141 and the back wiring 142 are approximately the same, but at least one of them may be different.
- the semiconductor device 100 of the seventh embodiment differs from the first embodiment in that the through electrode 141 and the back wiring 142 have different line widths and thicknesses.
- FIG. 15 is an example of a plan view of the semiconductor device 100 according to the seventh embodiment of the present technology.
- the line width of the through electrode 141 on the left side of the coordinate X3 is larger than the line width of the back wiring 142 on the right side of the coordinate X3.
- the through electrode 141 and the back wiring 142 may have different thicknesses. Also, both the line width and the thickness of the through electrode 141 and the back wiring 142 can be set to different values.
- the through-electrode 141 and the back wiring 142 have different line widths and thicknesses, impedance mismatch may occur, but instead, the degree of freedom in design can be improved, and signal transmission performance can be improved.
- the seventh embodiment of the present technology since the line width and thickness are different between the through electrode 141 and the back wiring 142, it is possible to improve the degree of freedom in design and improve the signal transmission performance. can.
- the shape of the through hole 130 is circular, but it can also be elliptical.
- a semiconductor device 100 according to the eighth embodiment differs from the first embodiment in that an elliptical through hole 130 is formed.
- FIG. 16 is an example of a plan view of the semiconductor device 100 according to the eighth embodiment of the present technology.
- the semiconductor device 100 of the eighth embodiment differs from the first embodiment in that the shape of the through hole 130 is elliptical. Also, the through electrode 141 is formed on the minor axis of the ellipse. This reduces the aspect ratio of the through hole 130 in the lithography step of a in FIG. 5, thereby facilitating manufacturing.
- the shape of the through hole 130 is elliptical, and the through electrode 141 is formed on the short axis of the ellipse, which facilitates manufacturing.
- the through electrodes 141 are formed on part of the sidewalls and bottom of the through holes 130, but the through electrodes 141 can be formed on parts other than the slits.
- the semiconductor device 100 of the ninth embodiment differs from the first embodiment in that through electrodes 141 are formed in areas other than the slits.
- FIG. 17 is an example of a plan view of the semiconductor device 100 according to the ninth embodiment of the present technology.
- the through hole 130 is covered with the conductive film except for the slit when viewed from the Z-axis direction.
- the coordinate X0 is the left end of the through-hole 130 before covering
- the coordinate X4 is the right end of the through-hole 130 before covering.
- Dotted circles in FIG. 4 indicate side walls of the through-holes 130 after coating (in other words, inner walls of the insulating film 160).
- the conductive film inside this dotted line corresponds to the through electrode 141 .
- the conductive film outside the dotted line corresponds to the back wiring 142 .
- a through electrode 141 is formed along the inner circumference of the inner wall except for the slit portion. Further, a through electrode 141 is formed at the bottom of the through hole 130 in an area other than the slit.
- FIG. 18 is an example of a cross-sectional view showing a configuration example of the semiconductor device 100 according to the ninth embodiment of the present technology.
- a is a cross-sectional view taken along line X5-X5' in FIG. b in FIG. 17 shows a cross-sectional view taken along the Y0-Y0′ line segment in FIG.
- the through electrodes 141 By forming the through electrodes 141 in areas other than the slit portions as illustrated in FIGS. 17 and 18, the area of the through electrodes 141 can be made wider than in the first embodiment.
- the through electrodes 141 are formed in areas other than the slit portions, the area of the through electrodes 141 can be increased.
- FIG. 19 is an example of a top view and a perspective view of the semiconductor device 100 according to the tenth embodiment of the present technology.
- a in FIG. 1 is an example of a top view of the semiconductor device 100 .
- b in the figure is an example of a perspective view of a portion of the insulating film 160 covering the side wall.
- the insulating film 160 for example, a photosensitive insulating resin film is used.
- the insulating film 160 is formed so as to cover only a portion of the side wall of the through hole 130 .
- the insulating film 160 is not formed on the side wall of the through-hole 130 in the range from X0 to X1, as illustrated by a in FIG.
- an insulating film 160 is formed on the sidewalls in the range from X1 to X2.
- the three-dimensional shape of the portion of the insulating film 160 that covers the side walls is obtained by cutting the pipe extending in the Z-axis direction into two parts, as illustrated in b in FIG. It becomes the remaining shape.
- FIG. 20 is an example of a cross-sectional view of the semiconductor device 100 according to the tenth embodiment of the present technology. As illustrated in the figure, the through electrode 141 is formed along the sidewall covered with the insulating film 160 .
- the insulating film 160 in the through hole 130 has a pipe shape, and strong thermal stress is generated in the circumferential direction due to the heat load. occur.
- the insulating film 160 inside the through hole 130 does not have a pipe shape and its volume is reduced. Therefore, thermal stress can be greatly reduced.
- the arrangement and ratio of the insulating film 160 within the through-hole 130 can be freely changed according to the layout of the through-electrode 141 .
- FIG. 21 is a diagram for explaining the manufacturing method up to the removal of the insulating film in the tenth embodiment of the present technology.
- the manufacturing system forms through-holes 130 by dry etching in the semiconductor substrate 170 on which the wiring layer 180 is formed.
- the manufacturing system embeds a photosensitive insulating resin film as an insulating film 160 in the through hole 130 using a spin coating method or a laminating method.
- the manufacturing system removes the insulating film 160 in the through-hole 130 by lithography, leaving a portion that partially covers the side wall.
- FIG. 22 is a diagram for explaining the manufacturing method up to formation of the resist 190 in the tenth embodiment of the present technology.
- the manufacturing system removes the insulating layer in the wiring layer 180 at the bottom of the through hole by dry etching to expose the pad 181 . The amount of etching is controlled so that the portion where the pad 181 is not formed does not come into contact with the underlying wiring.
- the manufacturing system deposits barrier metal and seed metal (conductive film 140) by PE-PVD method and PE-CVD method.
- the manufacturing system forms a mask of a resist 190 by lithography in a region (wiring space, etc.) where the conductive film 140 is not finally arranged.
- FIG. 23 is a diagram for explaining a manufacturing method up to formation of a protective film and bumps in the tenth embodiment of the present technology.
- the manufacturing system thickens the conductive film 140 in the region where the resist 190 is not formed by electroplating.
- the manufacturing system removes the conductive film 140 under the resist 190 by wet etching to separate the through electrode 141 and the back wiring 142 from each other.
- the manufacturing system forms a protective film 110 by a coating method and forms bumps 120 for connection to the outside. At this time, the manufacturing system adjusts the coating conditions so that the inside of the through-hole 130 is not completely filled with the protective film 110, but is left with a gap.
- the insulating film 160 partially covers the side wall of the through hole 130, so that thermal stress can be reduced more than when the entire side wall is covered. can.
- a semiconductor device 100 according to a first modification of the tenth embodiment differs from the tenth embodiment in that the sidewalls of through holes 130 are covered with an inorganic film.
- FIG. 24 is an example of a cross-sectional view of the semiconductor device 100 according to the first modification of the tenth embodiment of the present technology.
- the entire side wall of through hole 130 and the back surface of semiconductor substrate 170 are covered with inorganic film 165 .
- Silicon dioxide (SiO 2 ), silicon nitride (SiN), a Low-k film, or the like is used as the inorganic film 165 .
- the insulating film 160 is formed to partially cover the inorganic film 165 inside the through hole 130 .
- the deposition process of the inorganic film 165 is inserted between a and b in FIG.
- the manufacturing steps after b in FIG. 21 are the same as those of the tenth embodiment.
- the inorganic film 165 formed at the bottom of the through-hole is removed together with the insulating layer in the wiring layer 180 at the bottom of the through-hole by the dry etching shown in FIG.
- the side wall of the through-hole 130 is covered with the inorganic film 165, so that the portion of the side wall where the insulating film 160 is not formed is covered with the inorganic film. It can be covered with a membrane 165 .
- one through electrode is arranged in the through hole 130, but two or more through electrodes may be arranged.
- a plurality of regions of the side wall can be covered with the insulating film 160 in accordance with the arrangement of the through electrodes.
- a semiconductor device 100 according to the second modification of the tenth embodiment differs from the tenth embodiment in that a plurality of regions of the side wall are covered with an insulating film 160 .
- FIG. 25 is an example of a perspective view and a top view of a semiconductor device 100 according to a second modification of the tenth embodiment of the present technology.
- a is an example of a perspective view of a portion of the insulating film 160 covering the side wall.
- b and c in the figure are examples of top views of the semiconductor device 100 .
- the through electrode and the rear surface wiring are omitted.
- Two regions of the side walls are covered with an insulating film 160, as illustrated by a and b in the figure.
- One of the two regions is an arc-shaped region from X0 to X1 when viewed from the Z-axis direction, and the other is an arc-shaped region from X2 to X3.
- the thick dotted line b in the figure indicates the region covered with the insulating film 160 in the sidewall.
- FIG. 26 is an example of a cross-sectional view of the semiconductor device 100 according to the second modification of the tenth embodiment of the present technology.
- FIG. 26a is a cross-sectional view taken along line X4-X5 in FIG. 25c.
- b in FIG. 26 is a cross-sectional view taken along line segment Y1-Y2 in c in FIG.
- a through electrode 141-1 is formed along the left portion of the two areas covered with the insulating film 160 and connected to the back wiring 142-1. Further, a through electrode 141-2 is formed along the right portion and connected to the back wiring 142-2.
- the through electrodes 141-1 and 141-2 are arranged because the insulating film 160 covers two regions of the side wall. be able to.
- the insulating film 160 is formed in two regions. You can freely change it according to your needs.
- the semiconductor device 100 according to the third modification of the tenth embodiment differs from the second modification of the tenth embodiment in that the arrangement and ratio of the insulating film 160 are changed.
- FIG. 27 is an example of a top view of a semiconductor device according to a third modification of the tenth embodiment of the present technology.
- a shows a top view when the insulating film 160 is formed in four regions.
- b in the figure shows a top view when the area covered by the insulating film 160 is increased.
- c shows a top view when the area covered with the insulating film 160 is narrowed.
- d in the figure shows a top view when the insulating film 160 is formed in two regions and the area of each region is narrowed.
- the through electrodes 141 and the rear wiring 142 are omitted in order to clearly show the regions covered with the insulating film 160 .
- regions of the side wall can also be covered with an insulating film 160, as illustrated by a in the figure.
- the area covered by the insulating film 160 can be made larger than the area of the uncovered portion.
- the area covered by the insulating film 160 can be made smaller than the area of the uncovered portion.
- two regions can be covered with an insulating film 160 and the area of each region can be made narrower than half of the entire side wall surface.
- the arrangement and ratio of the insulating film 160 can be freely changed according to the layout of the conductive film 140 and the through electrodes 141 .
- the various insulating film 160 patterns described above can be manufactured by changing the layout of the lithography mask pattern in FIG. 21c.
- each of the through holes can be covered with a different shape.
- one through-hole can be covered with the shape of a in the figure, and another through-hole can be covered with the shape of b in the same figure.
- a combination of a and c in the figure and a combination of a, b and c in the figure can also be used.
- FIG. 28 is a diagram illustrating an example of a layered structure of a solid-state imaging device according to an embodiment of the present technology.
- This solid-state imaging device is a semiconductor package in which a laminated substrate 13 configured by laminating a lower substrate 11 and an upper substrate 12 is packaged.
- the upper substrate 12 is formed with a pixel region 21 in which pixel portions for performing photoelectric conversion are arranged two-dimensionally, and a control circuit 22 for controlling the pixel portions.
- a logic circuit 23 such as a signal processing circuit for processing pixel signals output from the pixel portion is formed on the lower substrate 11 .
- the structure of the through electrode 141 exemplified in the first to tenth embodiments is applied to the chip through electrode (TCV: Through Chip Via) provided in the lower substrate 11 or the like.
- the technology (the present technology) according to the present disclosure can be applied to various products.
- the technology according to the present disclosure is implemented as a device mounted on any type of moving object such as automobiles, electric vehicles, hybrid electric vehicles, motorcycles, bicycles, personal mobility, airplanes, drones, ships, and robots. may
- FIG. 29 is a block diagram showing a schematic configuration example of a vehicle control system, which is an example of a mobile control system to which the technology according to the present disclosure can be applied.
- a vehicle control system 12000 includes a plurality of electronic control units connected via a communication network 12001.
- the vehicle control system 12000 includes a drive system control unit 12010, a body system control unit 12020, an outside information detection unit 12030, an inside information detection unit 12040, and an integrated control unit 12050.
- a microcomputer 12051, an audio/image output unit 12052, and an in-vehicle network I/F (interface) 12053 are illustrated.
- the drive system control unit 12010 controls the operation of devices related to the drive system of the vehicle according to various programs.
- the driving system control unit 12010 includes a driving force generator for generating driving force of the vehicle such as an internal combustion engine or a driving motor, a driving force transmission mechanism for transmitting the driving force to the wheels, and a steering angle of the vehicle. It functions as a control device such as a steering mechanism to adjust and a brake device to generate braking force of the vehicle.
- the body system control unit 12020 controls the operation of various devices equipped on the vehicle body according to various programs.
- the body system control unit 12020 functions as a keyless entry system, a smart key system, a power window device, or a control device for various lamps such as headlamps, back lamps, brake lamps, winkers or fog lamps.
- the body system control unit 12020 can receive radio waves transmitted from a portable device that substitutes for a key or signals from various switches.
- the body system control unit 12020 receives the input of these radio waves or signals and controls the door lock device, power window device, lamps, etc. of the vehicle.
- the vehicle exterior information detection unit 12030 detects information outside the vehicle in which the vehicle control system 12000 is installed.
- the vehicle exterior information detection unit 12030 is connected with an imaging section 12031 .
- the vehicle exterior information detection unit 12030 causes the imaging unit 12031 to capture an image of the exterior of the vehicle, and receives the captured image.
- the vehicle exterior information detection unit 12030 may perform object detection processing or distance detection processing such as people, vehicles, obstacles, signs, or characters on the road surface based on the received image.
- the imaging unit 12031 is an optical sensor that receives light and outputs an electrical signal according to the amount of received light.
- the imaging unit 12031 can output the electric signal as an image, and can also output it as distance measurement information.
- the light received by the imaging unit 12031 may be visible light or non-visible light such as infrared rays.
- the in-vehicle information detection unit 12040 detects in-vehicle information.
- the in-vehicle information detection unit 12040 is connected to, for example, a driver state detection section 12041 that detects the state of the driver.
- the driver state detection unit 12041 includes, for example, a camera that captures an image of the driver, and the in-vehicle information detection unit 12040 detects the degree of fatigue or concentration of the driver based on the detection information input from the driver state detection unit 12041. It may be calculated, or it may be determined whether the driver is dozing off.
- the microcomputer 12051 calculates control target values for the driving force generator, the steering mechanism, or the braking device based on information on the inside and outside of the vehicle acquired by the vehicle exterior information detection unit 12030 or the vehicle interior information detection unit 12040, and controls the drive system control unit.
- a control command can be output to 12010 .
- the microcomputer 12051 realizes the functions of ADAS (Advanced Driver Assistance System) including collision avoidance or impact mitigation, follow-up driving based on inter-vehicle distance, vehicle speed maintenance driving, vehicle collision warning, or vehicle lane deviation warning. Cooperative control can be performed for the purpose of ADAS (Advanced Driver Assistance System) including collision avoidance or impact mitigation, follow-up driving based on inter-vehicle distance, vehicle speed maintenance driving, vehicle collision warning, or vehicle lane deviation warning. Cooperative control can be performed for the purpose of ADAS (Advanced Driver Assistance System) including collision avoidance or impact mitigation, follow-up driving based on inter-vehicle distance, vehicle speed maintenance driving, vehicle collision warning, or
- the microcomputer 12051 controls the driving force generator, the steering mechanism, the braking device, etc. based on the information about the vehicle surroundings acquired by the vehicle exterior information detection unit 12030 or the vehicle interior information detection unit 12040, so that the driver's Cooperative control can be performed for the purpose of autonomous driving, etc., in which vehicles autonomously travel without depending on operation.
- the microcomputer 12051 can output a control command to the body system control unit 12020 based on the information outside the vehicle acquired by the information detection unit 12030 outside the vehicle.
- the microcomputer 12051 controls the headlamps according to the position of the preceding vehicle or the oncoming vehicle detected by the vehicle exterior information detection unit 12030, and performs cooperative control aimed at anti-glare such as switching from high beam to low beam. It can be carried out.
- the audio/image output unit 12052 transmits at least one of audio and/or image output signals to an output device capable of visually or audibly notifying the passengers of the vehicle or the outside of the vehicle.
- an audio speaker 12061, a display unit 12062, and an instrument panel 12063 are illustrated as output devices.
- the display unit 12062 may include at least one of an on-board display and a head-up display, for example.
- FIG. 30 is a diagram showing an example of the installation position of the imaging unit 12031.
- the imaging unit 12031 has imaging units 12101, 12102, 12103, 12104, and 12105.
- the imaging units 12101, 12102, 12103, 12104, and 12105 are provided at positions such as the front nose of the vehicle 12100, the side mirrors, the rear bumper, the back door, and the upper part of the windshield in the vehicle interior, for example.
- An image pickup unit 12101 provided in the front nose and an image pickup unit 12105 provided above the windshield in the passenger compartment mainly acquire images in front of the vehicle 12100 .
- Imaging units 12102 and 12103 provided in the side mirrors mainly acquire side images of the vehicle 12100 .
- An imaging unit 12104 provided in the rear bumper or back door mainly acquires an image behind the vehicle 12100 .
- the imaging unit 12105 provided above the windshield in the passenger compartment is mainly used to detect preceding vehicles, pedestrians, obstacles, traffic lights, traffic signs, lanes, and the like.
- FIG. 30 shows an example of the imaging range of the imaging units 12101 to 12104.
- the imaging range 12111 indicates the imaging range of the imaging unit 12101 provided in the front nose
- the imaging ranges 12112 and 12113 indicate the imaging ranges of the imaging units 12102 and 12103 provided in the side mirrors, respectively
- the imaging range 12114 The imaging range of an imaging unit 12104 provided on the rear bumper or back door is shown. For example, by superimposing the image data captured by the imaging units 12101 to 12104, a bird's-eye view image of the vehicle 12100 viewed from above can be obtained.
- At least one of the imaging units 12101 to 12104 may have a function of acquiring distance information.
- at least one of the imaging units 12101 to 12104 may be a stereo camera composed of a plurality of imaging elements, or may be an imaging element having pixels for phase difference detection.
- the microcomputer 12051 determines the distance to each three-dimensional object within the imaging ranges 12111 to 12114 and changes in this distance over time (relative velocity with respect to the vehicle 12100). , it is possible to extract, as the preceding vehicle, the closest three-dimensional object on the course of the vehicle 12100, which runs at a predetermined speed (for example, 0 km/h or more) in substantially the same direction as the vehicle 12100. can. Furthermore, the microcomputer 12051 can set the inter-vehicle distance to be secured in advance in front of the preceding vehicle, and perform automatic brake control (including following stop control) and automatic acceleration control (including following start control). In this way, cooperative control can be performed for the purpose of automatic driving in which the vehicle runs autonomously without relying on the operation of the driver.
- automatic brake control including following stop control
- automatic acceleration control including following start control
- the microcomputer 12051 converts three-dimensional object data related to three-dimensional objects to other three-dimensional objects such as motorcycles, ordinary vehicles, large vehicles, pedestrians, and utility poles. It can be classified and extracted and used for automatic avoidance of obstacles. For example, the microcomputer 12051 distinguishes obstacles around the vehicle 12100 into those that are visible to the driver of the vehicle 12100 and those that are difficult to see. Then, the microcomputer 12051 judges the collision risk indicating the degree of danger of collision with each obstacle, and when the collision risk is equal to or higher than the set value and there is a possibility of collision, an audio speaker 12061 and a display unit 12062 are displayed. By outputting an alarm to the driver via the drive system control unit 12010 and performing forced deceleration and avoidance steering via the drive system control unit 12010, driving support for collision avoidance can be performed.
- At least one of the imaging units 12101 to 12104 may be an infrared camera that detects infrared rays.
- the microcomputer 12051 can recognize a pedestrian by determining whether or not the pedestrian exists in the captured images of the imaging units 12101 to 12104 .
- recognition of a pedestrian is performed by, for example, a procedure for extracting feature points in images captured by the imaging units 12101 to 12104 as infrared cameras, and performing pattern matching processing on a series of feature points indicating the outline of an object to determine whether or not the pedestrian is a pedestrian.
- the audio image output unit 12052 outputs a rectangular outline for emphasis to the recognized pedestrian. is superimposed on the display unit 12062 . Also, the audio/image output unit 12052 may control the display unit 12062 to display an icon or the like indicating a pedestrian at a desired position.
- the technology according to the present disclosure can be applied to, for example, the imaging unit 12031 among the configurations described above.
- the semiconductor device 100 in FIG. 1 can be applied to the imaging portion 12031 .
- thermal stress in the device can be reduced and reliability can be improved.
- Example of application to an endoscopic surgery system The technology according to the present disclosure can be applied to various products.
- the technology according to the present disclosure may be applied to an endoscopic surgery system.
- FIG. 31 is a diagram showing an example of a schematic configuration of an endoscopic surgery system 5000 to which technology according to the present disclosure can be applied.
- FIG. 31 shows an operator (physician) 5067 performing surgery on a patient 5071 on a patient bed 5069 using an endoscopic surgery system 5000 .
- the endoscopic surgery system 5000 includes an endoscope 5001, other surgical tools 5017, a support arm device 5027 for supporting the endoscope 5001, and various devices for endoscopic surgery. and a cart 5037 on which is mounted.
- trocars 5025a to 5025d are punctured into the abdominal wall multiple times. Then, the barrel 5003 of the endoscope 5001 and other surgical instruments 5017 are inserted into the body cavity of the patient 5071 from the trocars 5025a to 5025d.
- a pneumoperitoneum tube 5019 , an energy treatment instrument 5021 and forceps 5023 are inserted into the patient's 5071 body cavity as other surgical instruments 5017 .
- the energy treatment tool 5021 is a treatment tool that performs tissue incision and ablation, blood vessel sealing, or the like, using high-frequency current or ultrasonic vibration.
- the illustrated surgical tool 5017 is merely an example, and various surgical tools generally used in endoscopic surgery, such as forceps and retractors, may be used as the surgical tool 5017 .
- An image of the surgical site within the body cavity of the patient 5071 captured by the endoscope 5001 is displayed on the display device 5041 .
- the operator 5067 uses the energy treatment tool 5021 and the forceps 5023 to perform treatment such as excision of the affected area while viewing the image of the operated area displayed on the display device 5041 in real time.
- the pneumoperitoneum tube 5019, the energy treatment instrument 5021, and the forceps 5023 are supported by the operator 5067, an assistant, or the like during surgery.
- the support arm device 5027 has an arm portion 5031 extending from the base portion 5029 .
- the arm portion 5031 is composed of joint portions 5033a, 5033b, 5033c and links 5035a, 5035b, and is driven under the control of the arm control device 5045.
- the arm 5031 supports the endoscope 5001 and controls its position and orientation. As a result, stable position fixation of the endoscope 5001 can be realized.
- the endoscope 5001 is composed of a lens barrel 5003 having a predetermined length from its distal end inserted into a body cavity of a patient 5071 and a camera head 5005 connected to the proximal end of the lens barrel 5003 .
- an endoscope 5001 configured as a so-called rigid scope having a rigid barrel 5003 is illustrated, but the endoscope 5001 is configured as a so-called flexible scope having a flexible barrel 5003. good too.
- the tip of the lens barrel 5003 is provided with an opening into which the objective lens is fitted.
- a light source device 5043 is connected to the endoscope 5001, and light generated by the light source device 5043 is guided to the tip of the lens barrel 5003 by a light guide extending inside the lens barrel 5003, and reaches the objective. The light is irradiated through the lens toward an observation target inside the body cavity of the patient 5071 .
- the endoscope 5001 may be a straight scope, a perspective scope, or a side scope.
- An optical system and an imaging element are provided inside the camera head 5005, and the reflected light (observation light) from the observation target is focused on the imaging element by the optical system.
- the imaging element photoelectrically converts the observation light to generate an electric signal corresponding to the observation light, that is, an image signal corresponding to the observation image.
- the image signal is transmitted to a camera control unit (CCU: Camera Control Unit) 5039 as RAW data.
- the camera head 5005 has a function of adjusting the magnification and focal length by appropriately driving the optical system.
- the camera head 5005 may be provided with a plurality of imaging elements, for example, in order to support stereoscopic vision (3D display).
- a plurality of relay optical systems are provided inside the lens barrel 5003 to guide the observation light to each of the plurality of imaging elements.
- the CCU 5039 is composed of a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), etc., and controls the operations of the endoscope 5001 and the display device 5041 in an integrated manner. Specifically, the CCU 5039 subjects the image signal received from the camera head 5005 to various image processing such as development processing (demosaicing processing) for displaying an image based on the image signal. The CCU 5039 provides the image signal subjected to the image processing to the display device 5041 . Also, the CCU 5039 transmits a control signal to the camera head 5005 to control its driving. The control signal may include information regarding imaging conditions such as magnification and focal length.
- the display device 5041 displays an image based on an image signal subjected to image processing by the CCU 5039 under the control of the CCU 5039 .
- the display device 5041 may be one capable of high-resolution display and/or one capable of 3D display.
- 4K or 8K high-resolution imaging using a display device 5041 with a size of 55 inches or more provides a more immersive feeling.
- a plurality of display devices 5041 having different resolutions and sizes may be provided depending on the application.
- the light source device 5043 is composed of, for example, a light source such as an LED (light emitting diode), and supplies the endoscope 5001 with irradiation light for imaging the surgical site.
- a light source such as an LED (light emitting diode)
- the arm control device 5045 is composed of a processor such as a CPU, for example, and operates according to a predetermined program to control the driving of the arm portion 5031 of the support arm device 5027 according to a predetermined control method.
- the input device 5047 is an input interface for the endoscopic surgery system 5000.
- the user can input various information and instructions to the endoscopic surgery system 5000 via the input device 5047 .
- the user inputs various types of information regarding surgery, such as patient's physical information and information about the surgical technique.
- the user via the input device 5047, instructs to drive the arm unit 5031, or instructs to change the imaging conditions (type of irradiation light, magnification, focal length, etc.) by the endoscope 5001. , an instruction to drive the energy treatment instrument 5021, or the like.
- the type of the input device 5047 is not limited, and the input device 5047 may be various known input devices.
- the input device 5047 for example, a mouse, keyboard, touch panel, switch, footswitch 5057 and/or lever can be applied.
- the touch panel may be provided on the display surface of the display device 5041 .
- the input device 5047 is a device worn by the user, such as a glasses-type wearable device or an HMD (Head Mounted Display), for example. is done. Also, the input device 5047 includes a camera capable of detecting the movement of the user, and performs various inputs according to the user's gestures and line of sight detected from images captured by the camera. Furthermore, the input device 5047 includes a microphone capable of picking up the user's voice, and various voice inputs are performed via the microphone. As described above, the input device 5047 is configured to be capable of inputting various kinds of information in a non-contact manner, so that a user belonging to a clean area (for example, an operator 5067) can operate a device belonging to an unclean area without contact. becomes possible. In addition, since the user can operate the device without taking his/her hands off the surgical tool, the user's convenience is improved.
- a clean area for example, an operator 5067
- the treatment instrument control device 5049 controls driving of the energy treatment instrument 5021 for tissue cauterization, incision, blood vessel sealing, or the like.
- the pneumoperitoneum device 5051 inflates the body cavity of the patient 5071 for the purpose of securing the visual field of the endoscope 5001 and securing the operator's working space, and injects gas into the body cavity through the pneumoperitoneum tube 5019 . send in.
- the recorder 5053 is a device capable of recording various types of information regarding surgery.
- the printer 5055 is a device capable of printing various types of information regarding surgery in various formats such as text, images, and graphs.
- the support arm device 5027 includes a base portion 5029 as a base and an arm portion 5031 extending from the base portion 5029 .
- the arm portion 5031 is composed of a plurality of joint portions 5033a, 5033b, 5033c and a plurality of links 5035a, 5035b connected by the joint portion 5033b.
- the configuration of the arm portion 5031 is simplified.
- the shape, number and arrangement of the joints 5033a to 5033c and the links 5035a and 5035b, the direction of the rotation axis of the joints 5033a to 5033c, and the like are appropriately set so that the arm 5031 has a desired degree of freedom. obtain.
- the arm portion 5031 may preferably be configured to have six or more degrees of freedom.
- the endoscope 5001 can be freely moved within the movable range of the arm portion 5031, so that the barrel 5003 of the endoscope 5001 can be inserted into the body cavity of the patient 5071 from a desired direction. be possible.
- the joints 5033a to 5033c are provided with actuators, and the joints 5033a to 5033c are configured to be rotatable around a predetermined rotation axis by driving the actuators.
- the arm control device 5045 By controlling the driving of the actuator by the arm control device 5045, the rotation angles of the joints 5033a to 5033c are controlled, and the driving of the arm 5031 is controlled. Thereby, control of the position and attitude of the endoscope 5001 can be realized.
- the arm control device 5045 can control the driving of the arm section 5031 by various known control methods such as force control or position control.
- the arm control device 5045 appropriately controls the driving of the arm section 5031 in accordance with the operation input.
- the position and orientation of the scope 5001 may be controlled.
- the endoscope 5001 at the distal end of the arm section 5031 can be moved from an arbitrary position to an arbitrary position, and then fixedly supported at the position after the movement.
- the arm portion 5031 may be operated by a so-called master-slave method. In this case, the arm portion 5031 can be remotely operated by the user via an input device 5047 installed at a location remote from the operating room.
- the arm control device 5045 When force control is applied, the arm control device 5045 receives an external force from the user and operates the actuators of the joints 5033a to 5033c so that the arm 5031 moves smoothly according to the external force. A so-called power assist control for driving may be performed. Accordingly, when the user moves the arm portion 5031 while directly touching the arm portion 5031, the arm portion 5031 can be moved with a relatively light force. Therefore, it becomes possible to move the endoscope 5001 more intuitively and with a simpler operation, and the user's convenience can be improved.
- the endoscope 5001 was supported by a doctor called a scopist.
- the use of the support arm device 5027 makes it possible to more reliably fix the position of the endoscope 5001 without manual intervention, so that an image of the surgical site can be stably obtained. , the operation can be performed smoothly.
- the arm control device 5045 does not necessarily have to be provided on the cart 5037. Also, the arm control device 5045 does not necessarily have to be one device. For example, the arm control device 5045 may be provided at each joint portion 5033a to 5033c of the arm portion 5031 of the support arm device 5027, and the arm portion 5031 is driven by the cooperation of the plurality of arm control devices 5045. Control may be implemented.
- the light source device 5043 supplies irradiation light to the endoscope 5001 when imaging the surgical site.
- the light source device 5043 is composed of, for example, a white light source composed of an LED, a laser light source, or a combination thereof.
- a white light source is configured by a combination of RGB laser light sources
- the output intensity and output timing of each color can be controlled with high precision. can be adjusted.
- the laser light from each of the RGB laser light sources is irradiated to the observation object in a time division manner, and by controlling the driving of the imaging element of the camera head 5005 in synchronization with the irradiation timing, each of the RGB can be handled. It is also possible to pick up images by time division. According to this method, a color image can be obtained without providing a color filter in the imaging element.
- the driving of the light source device 5043 may be controlled so as to change the intensity of the output light every predetermined time.
- the drive of the imaging device of the camera head 5005 in synchronism with the timing of the change in the intensity of the light to acquire images in a time division manner and synthesizing the images, a high dynamic A range of images can be generated.
- the light source device 5043 may be configured to be able to supply light in a predetermined wavelength band corresponding to special light observation.
- special light observation for example, the wavelength dependence of light absorption in body tissues is used to irradiate a narrower band of light than the irradiation light (i.e., white light) used during normal observation, thereby observing the mucosal surface layer.
- irradiation light i.e., white light
- Narrow Band Imaging in which a predetermined tissue such as a blood vessel is imaged with high contrast, is performed.
- fluorescence observation may be performed in which an image is obtained from fluorescence generated by irradiation with excitation light.
- Fluorescence observation involves irradiating body tissue with excitation light and observing fluorescence from the body tissue (autofluorescence observation), or locally injecting a reagent such as indocyanine green (ICG) into the body tissue and observing the body tissue.
- a fluorescent image can be obtained by irradiating excitation light corresponding to the fluorescent wavelength of the reagent.
- the light source device 5043 can be configured to be able to supply narrowband light and/or excitation light corresponding to such special light observation.
- FIG. 32 is a block diagram showing an example of functional configurations of the camera head 5005 and CCU 5039 shown in FIG.
- the camera head 5005 has, as its functions, a lens unit 5007, an imaging section 5009, a drive section 5011, a communication section 5013, and a camera head control section 5015.
- the CCU 5039 also has a communication unit 5059, an image processing unit 5061, and a control unit 5063 as its functions.
- the camera head 5005 and CCU 5039 are connected by a transmission cable 5065 so as to be able to communicate bidirectionally.
- a lens unit 5007 is an optical system provided at a connection portion with the lens barrel 5003 . Observation light captured from the tip of the lens barrel 5003 is guided to the camera head 5005 and enters the lens unit 5007 .
- a lens unit 5007 is configured by combining a plurality of lenses including a zoom lens and a focus lens. The optical characteristics of the lens unit 5007 are adjusted so that the observation light is condensed on the light receiving surface of the imaging element of the imaging unit 5009 . Also, the zoom lens and the focus lens are configured so that their positions on the optical axis can be moved in order to adjust the magnification and focus of the captured image.
- the image pickup unit 5009 is configured by an image pickup device, and is arranged behind the lens unit 5007 . Observation light that has passed through the lens unit 5007 is condensed on the light receiving surface of the image sensor, and an image signal corresponding to the observation image is generated by photoelectric conversion. An image signal generated by the imaging unit 5009 is provided to the communication unit 5013 .
- CMOS Complementary Metal Oxide Semiconductor
- the imaging element for example, one capable of capturing a high-resolution image of 4K or higher may be used.
- the imaging device that constitutes the imaging unit 5009 is configured to have a pair of imaging devices for respectively acquiring right-eye and left-eye image signals corresponding to 3D display.
- the 3D display enables the operator 5067 to more accurately grasp the depth of the living tissue in the surgical site.
- the imaging unit 5009 is configured as a multi-plate type, a plurality of systems of lens units 5007 are provided corresponding to each imaging element.
- the imaging unit 5009 does not necessarily have to be provided in the camera head 5005 .
- the imaging unit 5009 may be provided inside the lens barrel 5003 immediately after the objective lens.
- the drive unit 5011 is configured by an actuator, and moves the zoom lens and focus lens of the lens unit 5007 by a predetermined distance along the optical axis under control from the camera head control unit 5015 . Thereby, the magnification and focus of the image captured by the imaging unit 5009 can be appropriately adjusted.
- the communication unit 5013 is configured by a communication device for transmitting and receiving various information to and from the CCU 5039.
- the communication unit 5013 transmits the image signal obtained from the imaging unit 5009 as RAW data to the CCU 5039 via the transmission cable 5065 .
- the image signal is preferably transmitted by optical communication in order to display the captured image of the surgical site with low latency.
- the operator 5067 performs surgery while observing the state of the affected area using captured images. Therefore, for safer and more reliable surgery, moving images of the operated area are displayed in real time as much as possible. This is because it is required.
- the communication unit 5013 is provided with a photoelectric conversion module that converts an electrical signal into an optical signal. After the image signal is converted into an optical signal by the photoelectric conversion module, it is transmitted to the CCU 5039 via the transmission cable 5065 .
- the communication unit 5013 receives a control signal for controlling driving of the camera head 5005 from the CCU 5039 .
- the control signal includes, for example, information to specify the frame rate of the captured image, information to specify the exposure value at the time of capturing, and/or information to specify the magnification and focus of the captured image. Contains information about conditions.
- the communication section 5013 provides the received control signal to the camera head control section 5015 .
- the control signal from the CCU 5039 may also be transmitted by optical communication.
- the communication unit 5013 is provided with a photoelectric conversion module that converts an optical signal into an electrical signal, and the control signal is provided to the camera head control unit 5015 after being converted into an electrical signal by the photoelectric conversion module.
- the imaging conditions such as the frame rate, exposure value, magnification, and focus are automatically set by the control unit 5063 of the CCU 5039 based on the acquired image signal. That is, the endoscope 5001 is equipped with so-called AE (Auto Exposure) function, AF (Auto Focus) function, and AWB (Auto White Balance) function.
- AE Auto Exposure
- AF Automatic Focus
- AWB Automatic White Balance
- the camera head control unit 5015 controls driving of the camera head 5005 based on the control signal from the CCU 5039 received via the communication unit 5013. For example, the camera head control unit 5015 controls the driving of the imaging element of the imaging unit 5009 based on the information specifying the frame rate of the captured image and/or the information specifying the exposure during imaging. Also, for example, the camera head control unit 5015 appropriately moves the zoom lens and the focus lens of the lens unit 5007 via the driving unit 5011 based on information specifying the magnification and focus of the captured image.
- the camera head control unit 5015 may further have a function of storing information for identifying the lens barrel 5003 and camera head 5005 .
- the camera head 5005 can be made resistant to autoclave sterilization.
- a communication unit 5059 is configured by a communication device for transmitting and receiving various information to and from the camera head 5005 .
- the communication unit 5059 receives image signals transmitted from the camera head 5005 via the transmission cable 5065 .
- the image signal can be preferably transmitted by optical communication.
- the communication unit 5059 is provided with a photoelectric conversion module for converting an optical signal into an electrical signal for optical communication.
- the communication unit 5059 provides the image processing unit 5061 with the image signal converted into the electric signal.
- the communication unit 5059 transmits a control signal for controlling driving of the camera head 5005 to the camera head 5005 .
- the control signal may also be transmitted by optical communication.
- the image processing unit 5061 performs various types of image processing on the image signal, which is RAW data transmitted from the camera head 5005 .
- the image processing includes, for example, development processing, image quality improvement processing (band enhancement processing, super-resolution processing, NR (noise reduction) processing and/or camera shake correction processing, etc.), and/or enlargement processing (electronic zoom processing). etc., various known signal processing is included.
- the image processing unit 5061 performs detection processing on the image signal for performing AE, AF, and AWB.
- the image processing unit 5061 is configured by a processor such as a CPU or GPU, and the above-described image processing and detection processing can be performed by the processor operating according to a predetermined program. Note that when the image processing unit 5061 is composed of a plurality of GPUs, the image processing unit 5061 appropriately divides information related to image signals and performs image processing in parallel by the plurality of GPUs.
- the control unit 5063 performs various controls related to the imaging of the surgical site by the endoscope 5001 and the display of the captured image. For example, the control unit 5063 generates control signals for controlling driving of the camera head 5005 . At this time, if the imaging condition is input by the user, the control unit 5063 generates a control signal based on the input by the user. Alternatively, when the endoscope 5001 is equipped with the AE function, the AF function, and the AWB function, the control unit 5063 optimizes the exposure value, focal length, and A white balance is calculated appropriately and a control signal is generated.
- control unit 5063 causes the display device 5041 to display an image of the surgical site based on the image signal subjected to image processing by the image processing unit 5061 .
- the control unit 5063 recognizes various objects in the surgical site image using various image recognition techniques. For example, the control unit 5063 detects the shape, color, and the like of the edges of objects included in the surgical site image, thereby detecting surgical tools such as forceps, specific body parts, bleeding, mist when using the energy treatment tool 5021, and the like. can recognize.
- the control unit 5063 uses the recognition result to superimpose and display various surgical assistance information on the image of the surgical site. By superimposing and presenting the surgery support information to the operator 5067, the surgery can be performed more safely and reliably.
- a transmission cable 5065 connecting the camera head 5005 and the CCU 5039 is an electrical signal cable compatible with electrical signal communication, an optical fiber compatible with optical communication, or a composite cable of these.
- wired communication is performed using the transmission cable 5065, but communication between the camera head 5005 and the CCU 5039 may be performed wirelessly. If the communication between them is performed wirelessly, it is not necessary to lay the transmission cable 5065 in the operating room, so the situation that the transmission cable 5065 interferes with the movement of the medical staff in the operating room can be resolved.
- an example of the endoscopic surgery system 5000 to which the technology according to the present disclosure can be applied has been described above.
- the endoscopic surgery system 5000 has been described as an example here, the system to which the technique according to the present disclosure can be applied is not limited to such an example.
- the technology according to the present disclosure may be applied to a flexible endoscope system for inspection and a microsurgery system.
- the technology according to the present disclosure can be preferably applied to the imaging unit 5009 among the configurations described above.
- the semiconductor device 100 in FIG. 1 can be applied to the imaging portion 5009 .
- thermal stress in the device can be reduced and reliability can be improved.
- the present technology can also have the following configuration.
- a semiconductor substrate a wiring layer formed on the surface of the semiconductor substrate; a first through hole penetrating the semiconductor substrate from the rear surface to the front surface of the semiconductor substrate and having sidewalls covered with an insulating film; and a first inner through-electrode formed along a portion of a sidewall of the first through-hole.
- a second through hole penetrating the semiconductor substrate from the back surface to the front surface of the semiconductor substrate and having sidewalls covered with an insulating film; a second inner through electrode formed along a sidewall of the second through hole,
- the semiconductor device according to (1) wherein the area in which the second inner through electrode is formed is different from the area in which the first inner through electrode is formed.
- the semiconductor device according to (1) or (2) further comprising an outer through electrode formed between the semiconductor substrate and the insulating film.
- the above (1) to (3) further comprising an external terminal formed on the back surface and a back surface wiring having one end connected to the external terminal and the other end connected to the first inner through electrode.
- the semiconductor device according to any one of 1. (5) a predetermined number of semiconductor elements are arranged in the wiring layer; A specific semiconductor element among the predetermined number of semiconductor elements is closest to the first through hole, The semiconductor device according to (4), wherein the first inner through-electrode is arranged in the first through-hole at a position closest to the specific semiconductor element.
- a predetermined number of semiconductor elements are arranged in the wiring layer; A specific semiconductor element among the predetermined number of semiconductor elements is closest to the first through hole, The semiconductor device according to (4), wherein the first inner through-electrode is arranged in the first through-hole at a position farthest from the specific semiconductor element. (7) The semiconductor device according to any one of (1) to (6), wherein the first inner through-electrode is formed at each of a plurality of locations on the side wall of the first through-hole. (8) The semiconductor device according to (7), wherein the potentials of the plurality of first inner through-hole electrodes are the same. (9) The semiconductor device according to (7), wherein the potentials of the plurality of first through electrodes are different from each other.
- (10) further comprising a rear surface wiring connected to the first inner through electrode;
- the shape of the through-hole is elliptical when viewed from the direction perpendicular to the back surface, and the first inner through-electrode is formed on the short axis of the ellipse (1) to (10).
- the semiconductor device according to any one of 1.
- (12) The first inner through electrode according to any one of (1) to (11) above, wherein the first inner through electrode is formed along part of the sidewall and part of the bottom of the first through hole. semiconductor device.
- the insulating film covers a part of the side wall of the through hole; The semiconductor device according to any one of (1) to (14), wherein the first inner through electrode is formed along the side wall covered with the insulating film.
- (16) further comprising an inorganic film covering a sidewall of the through hole; The semiconductor device according to (15), wherein the insulating film partially covers the inorganic film.
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Abstract
Description
1.第1の実施の形態(貫通孔の側壁の一部に貫通電極を形成した例)
2.第2の実施の形態(面積の異なる複数の貫通電極を形成した例)
3.第3の実施の形態(貫通孔の側壁の一部と、貫通孔の側壁の一部とに貫通電極を形成した例)
4.第4の実施の形態(レイアウトを変えて絶縁膜の内壁の一部に貫通電極を形成した例)
5.第5の実施の形態(貫通孔の側壁の一部に同電位の複数の貫通電極を形成した例)
6.第6の実施の形態(貫通孔の側壁の一部に電位の異なる複数の貫通電極を形成した例)
7.第7の実施の形態(貫通孔の側壁の一部に貫通電極を形成し、線幅や厚みが異なる裏面配線を接続した例)
8.第8の実施の形態(楕円形の貫通孔の側壁の一部に貫通電極を形成した例)
9.第9の実施の形態(スリットの部分以外に貫通電極を形成した例)
10.第10の実施の形態(貫通孔の側壁の一部を絶縁膜で被覆し、貫通電極を形成した例)
11.移動体への応用例
12.内視鏡手術システムへの応用例
[半導体装置の構成例]
図1は、本技術の第1の実施の形態における半導体装置100の一構成例を示す断面図である。この半導体装置100は、保護膜110、バンプ120、貫通電極141、裏面配線142、絶縁膜160、半導体基板170および配線層180を備える。半導体装置100として、信号処理回路、メモリ、イメージセンサなどの各種の回路、素子や装置が想定される。
図3は、本技術の第1の実施の形態における絶縁膜160の成膜までの製造方法を説明するための図である。まず、同図におけるaに例示するように、製造システムは、半導体基板170の表面に既存技術で配線層180を形成する。パッド181は、貫通電極141を配置する領域のみに配置される。次に、半導体基板170を裏面より研削やドライエッチング、ウェットエッチングで薄膜化する。
上述の第1の実施の形態では、貫通孔130の側壁および底部の一部に貫通電極141を形成していたが、要求される熱応力や抵抗率が貫通電極ごとに異なることもある。この第2の実施の形態の半導体装置100は、貫通電極の面積を用途に応じて変更した点において第1の実施の形態と異なる。
上述の第1の実施の形態では、絶縁膜160の内壁に貫通電極141を形成していたが、クロストークの低減が必要な場合もある。この第3の実施の形態の半導体装置100は、貫通孔130の側壁に沿って貫通電極をさらに形成した点において第1の実施の形態と異なる。
上述の第1の実施の形態では、X-Y平面においてトランジスタ183に最も近い座標X3に貫通電極141を配置していたが、半導体素子の特性変動の軽減が必要な場合がある。この第4の実施の形態の半導体装置100は、貫通電極141の位置を変更した点において第1の実施の形態と異なる。
上述の第1の実施の形態では、バンプ120とパッド181とを1本の裏面配線142により接続していたが、さらなる熱応力の低減が要求されることもある。この第5の実施の形態の半導体装置100は、同電位の複数本の裏面配線を配線した点において第1の実施の形態と異なる。
上述の第1の実施の形態では、バンプ120とパッド181とを1本の裏面配線142により接続していたが、貫通電極の高集積化が要求されることがある。この第6の実施の形態の半導体装置100は、異なる電位の複数の裏面配線を配線した点において第1の実施の形態と異なる。
上述の第1の実施の形態では、貫通電極141と裏面配線142との線幅や厚みを同程度としていたが、これらの少なくとも一方が異なっていてもよい。この第7の実施の形態の半導体装置100は、貫通電極141と裏面配線142との線幅や厚みが異なる点において第1の実施の形態と異なる。
上述の第1の実施の形態では、貫通孔130の形状を円にしていたが、楕円にすることもできる。この第8の実施の形態における半導体装置100は、楕円形の貫通孔130を形成した点において第1の実施の形態と異なる。
上述の第1の実施の形態では、貫通孔130の側壁および底部の一部に貫通電極141を形成していたが、スリットの部分以外に貫通電極141を形成することもできる。この第9の実施の形態の半導体装置100は、スリットの部分以外に貫通電極141を形成した点において第1の実施の形態と異なる。
上述の第1の実施の形態では、貫通孔の側壁全面を絶縁膜160により被覆していたが、絶縁膜160が樹脂膜の場合、無機膜よりも熱ストレスの影響が大きくなる。このため、絶縁膜160の変形やクラックにより、貫通電極141とパッド181とが剥離するおそれがある。この第10の実施の形態における半導体装置100は、側壁の一部に絶縁膜160を形成した点において第1の実施の形態と異なる。
上述の第10の実施の形態では、貫通孔130の側壁のうち、絶縁膜160により被覆されていない部分において半導体基板170が露出した状態となり、デバイス性能や特性影響への懸念が生じることがある。この第10の実施の形態の第1の変形例における半導体装置100は、貫通孔130の側壁が無機膜により被覆される点において第10の実施の形態と異なる。
上述の第10の実施の形態では、貫通孔130内に1本の貫通電極を配置していたが、2本以上の貫通電極を配置することもできる。この場合には、貫通電極の配置に合わせて、側壁のうち複数の領域を絶縁膜160により被覆することができる。この第10の実施の形態の第2の変形例における半導体装置100は、側壁の複数の領域を絶縁膜160により被覆した点において第10の実施の形態と異なる。
上述の第10の実施の形態の第2の変形例では、2つの領域に絶縁膜160を形成していたが、貫通孔130内の絶縁膜160の配置および割合は、貫通電極141のレイアウトに応じて自由に変化させることができる。この第10の実施の形態の第3の変形例における半導体装置100は、絶縁膜160の配置や割合を変更した点において第10の実施の形態の第2の変形例と異なる。
本開示に係る技術(本技術)は、様々な製品へ応用することができる。例えば、本開示に係る技術は、自動車、電気自動車、ハイブリッド電気自動車、自動二輪車、自転車、パーソナルモビリティ、飛行機、ドローン、船舶、ロボット等のいずれかの種類の移動体に搭載される装置として実現されてもよい。
本開示に係る技術は、様々な製品へ応用することができる。例えば、本開示に係る技術は、内視鏡手術システムに適用されてもよい。
支持アーム装置5027は、ベース部5029から延伸するアーム部5031を備える。図示する例では、アーム部5031は、関節部5033a、5033b、5033c、及びリンク5035a、5035bから構成されており、アーム制御装置5045からの制御により駆動される。アーム部5031によって内視鏡5001が支持され、その位置及び姿勢が制御される。これにより、内視鏡5001の安定的な位置の固定が実現され得る。
内視鏡5001は、先端から所定の長さの領域が患者5071の体腔内に挿入される鏡筒5003と、鏡筒5003の基端に接続されるカメラヘッド5005と、から構成される。図示する例では、硬性の鏡筒5003を有するいわゆる硬性鏡として構成される内視鏡5001を図示しているが、内視鏡5001は、軟性の鏡筒5003を有するいわゆる軟性鏡として構成されてもよい。
CCU5039は、CPU(Central Processing Unit)やGPU(Graphics Processing Unit)等によって構成され、内視鏡5001及び表示装置5041の動作を統括的に制御する。具体的には、CCU5039は、カメラヘッド5005から受け取った画像信号に対して、例えば現像処理(デモザイク処理)等の、当該画像信号に基づく画像を表示するための各種の画像処理を施す。CCU5039は、当該画像処理を施した画像信号を表示装置5041に提供する。また、CCU5039は、カメラヘッド5005に対して制御信号を送信し、その駆動を制御する。当該制御信号には、倍率や焦点距離等、撮像条件に関する情報が含まれ得る。
支持アーム装置5027は、基台であるベース部5029と、ベース部5029から延伸するアーム部5031と、を備える。図示する例では、アーム部5031は、複数の関節部5033a、5033b、5033cと、関節部5033bによって連結される複数のリンク5035a、5035bと、から構成されているが、図32では、簡単のため、アーム部5031の構成を簡略化して図示している。実際には、アーム部5031が所望の自由度を有するように、関節部5033a~5033c及びリンク5035a、5035bの形状、数及び配置、並びに関節部5033a~5033cの回転軸の方向等が適宜設定され得る。例えば、アーム部5031は、好適に、6自由度以上の自由度を有するように構成され得る。これにより、アーム部5031の可動範囲内において内視鏡5001を自由に移動させることが可能になるため、所望の方向から内視鏡5001の鏡筒5003を患者5071の体腔内に挿入することが可能になる。
光源装置5043は、内視鏡5001に術部を撮影する際の照射光を供給する。光源装置5043は、例えばLED、レーザ光源又はこれらの組み合わせによって構成される白色光源から構成される。このとき、RGBレーザ光源の組み合わせにより白色光源が構成される場合には、各色(各波長)の出力強度及び出力タイミングを高精度に制御することができるため、光源装置5043において撮像画像のホワイトバランスの調整を行うことができる。また、この場合には、RGBレーザ光源それぞれからのレーザ光を時分割で観察対象に照射し、その照射タイミングに同期してカメラヘッド5005の撮像素子の駆動を制御することにより、RGBそれぞれに対応した画像を時分割で撮像することも可能である。当該方法によれば、当該撮像素子にカラーフィルタを設けなくても、カラー画像を得ることができる。
図32を参照して、内視鏡5001のカメラヘッド5005及びCCU5039の機能についてより詳細に説明する。図32は、図31に示すカメラヘッド5005及びCCU5039の機能構成の一例を示すブロック図である。
(1)半導体基板と、
前記半導体基板の表面に形成された配線層と、
前記半導体基板の裏面から前記表面まで前記半導体基板を貫通し、側壁が絶縁膜により被覆された第1の貫通孔と、
前記第1の貫通孔の側壁の一部に沿って形成された第1の内側貫通電極と
を具備する半導体装置。
(2)前記半導体基板の前記裏面から前記表面まで前記半導体基板を貫通し、側壁が絶縁膜により被覆された第2の貫通孔と、
前記第2の貫通孔の側壁に沿って形成された第2の内側貫通電極と
をさらに具備し、
前記第2の内側貫通電極が形成される面積は、前記第1の内側貫通電極が形成される面積と異なる
前記(1)記載の半導体装置。
(3)前記半導体基板と前記絶縁膜との間に形成された外側貫通電極をさらに具備する
前記(1)または(2)に記載の半導体装置。
(4)前記裏面に形成された外部端子と
一端が前記外部端子に接続され、他端が前記第1の内側貫通電極に接続された裏面配線と
をさらに具備する
前記(1)から(3)のいずれかに記載の半導体装置。
(5)前記配線層には、所定数の半導体素子が配置され、
前記所定数の半導体素子のうち特定の半導体素子は、前記第1の貫通孔に最も近く、
前記第1の貫通孔において、前記特定の半導体素子に最も近い位置に前記第1の内側貫通電極が配置される
前記(4)記載の半導体装置。
(6)前記配線層には、所定数の半導体素子が配置され、
前記所定数の半導体素子のうち特定の半導体素子は、前記第1の貫通孔に最も近く、
前記第1の貫通孔において、前記特定の半導体素子から最も遠い位置に前記第1の内側貫通電極が配置される
前記(4)記載の半導体装置。
(7)前記第1の貫通孔の側壁の複数個所のそれぞれに前記第1の内側貫通電極が形成される
前記(1)から(6)のいずれかに記載の半導体装置。
(8)前記複数個所の前記第1の内側貫通電極のそれぞれの電位は同一である
前記(7)記載の半導体装置。
(9)前記複数個所の前記第1の貫通電極のそれぞれの電位は異なる
前記(7)記載の半導体装置。
(10)前記第1の内側貫通電極に接続される裏面配線をさらに具備し、
前記第1の内側貫通電極と前記裏面配線との線幅および厚みの少なくとも一方が異なる
前記(1)から(9)のいずれかに記載の半導体装置。
(11)前記裏面に垂直な方向から見て前記貫通孔の形状は、楕円であり、前記第1の内側貫通電極は、前記楕円の短軸上に形成される
前記(1)から(10)のいずれかに記載の半導体装置。
(12)前記第1の内側貫通電極は、前記側壁の一部と前記第1の貫通孔の底部の一部とに沿って形成される
前記(1)から(11)のいずれかに記載の半導体装置。
(13)前記配線層には、前記底部の一部に沿ってパッドが形成される
前記(12)記載の半導体装置。
(14)前記第1の内側貫通電極は、スリット以外の部分に形成される
前記(1)から(13)のいずれかに記載の半導体装置。
(15)前記絶縁膜は、前記貫通孔の側壁の一部を被覆し、
前記第1の内側貫通電極は、前記絶縁膜により被覆された側壁に沿って形成される
前記(1)から(14)のいずれかに記載の半導体装置。
(16)前記貫通孔の側壁を被覆する無機膜をさらに具備し、
前記絶縁膜は、前記無機膜の一部を被覆する
前記(15)記載の半導体装置。
(17)前記絶縁膜は、前記貫通孔の側壁のうち複数の領域を被覆する
前記(15)または(16)に記載の半導体装置。
(18)前記側壁のうち前記絶縁膜が被覆された部分の面積は、前記絶縁膜により被覆されない部分の面積と異なる
前記(15)から(17)のいずれかに記載の半導体装置。
(19)半導体基板の表面に配線層を形成する配線層形成手順と、
前記半導体基板の裏面から前記表面まで前記半導体基板を貫通する第1の貫通孔を形成する貫通孔形成手順と、
前記第1の貫通孔の側壁を被覆する絶縁膜を形成する絶縁膜形成手順と、
前記第1の貫通孔の側壁の一部に沿って第1の内側貫通電極を形成する内側貫通電極形成手順と
を具備する半導体装置の製造方法。
(20)前記貫通電極形成手順において、前記貫通電極をセミアディティブ法により形成する
前記(19)記載の製造方法。
12 上側基板
13 積層基板
21 画素領域
22 制御回路
23 ロジック回路
100 半導体装置
110 保護膜
120、120-1~120-3、121 バンプ
130~132 貫通孔
140、150 導電膜
141、141-1~141-3、143、151 貫通電極
142、142-1~142-3、144、152 裏面配線
160 絶縁膜
165 無機膜
170 半導体基板
180 配線層
181 パッド
182 表面配線
183 トランジスタ
190 レジスト
5009、12031 撮像部
Claims (20)
- 半導体基板と、
前記半導体基板の表面に形成された配線層と、
前記半導体基板の裏面から前記表面まで前記半導体基板を貫通し、側壁が絶縁膜により被覆された第1の貫通孔と、
前記第1の貫通孔の側壁の一部に沿って形成された第1の内側貫通電極と
を具備する半導体装置。 - 前記半導体基板の前記裏面から前記表面まで前記半導体基板を貫通し、側壁が絶縁膜により被覆された第2の貫通孔と、
前記第2の貫通孔の側壁に沿って形成された第2の内側貫通電極と
をさらに具備し、
前記第2の内側貫通電極が形成される面積は、前記第1の内側貫通電極が形成される面積と異なる
請求項1記載の半導体装置。 - 前記半導体基板と前記絶縁膜との間に形成された外側貫通電極をさらに具備する
請求項1記載の半導体装置。 - 前記裏面に形成された外部端子と
一端が前記外部端子に接続され、他端が前記第1の内側貫通電極に接続された裏面配線と
をさらに具備する
請求項1記載の半導体装置。 - 前記配線層には、所定数の半導体素子が配置され、
前記所定数の半導体素子のうち特定の半導体素子は、前記第1の貫通孔に最も近く、
前記第1の貫通孔において、前記特定の半導体素子に最も近い位置に前記第1の内側貫通電極が配置される
請求項4記載の半導体装置。 - 前記配線層には、所定数の半導体素子が配置され、
前記所定数の半導体素子のうち特定の半導体素子は、前記第1の貫通孔に最も近く、
前記第1の貫通孔において、前記特定の半導体素子から最も遠い位置に前記第1の内側貫通電極が配置される
請求項4記載の半導体装置。 - 前記第1の貫通孔の側壁の複数個所のそれぞれに前記第1の内側貫通電極が形成される
請求項1記載の半導体装置。 - 前記複数個所の前記第1の内側貫通電極のそれぞれの電位は同一である
請求項7記載の半導体装置。 - 前記複数個所の前記第1の貫通電極のそれぞれの電位は異なる
請求項7記載の半導体装置。 - 前記第1の内側貫通電極に接続される裏面配線をさらに具備し、
前記第1の内側貫通電極と前記裏面配線との線幅および厚みの少なくとも一方が異なる
請求項1記載の半導体装置。 - 前記裏面に垂直な方向から見て前記貫通孔の形状は、楕円であり、前記第1の内側貫通電極は、前記楕円の短軸上に形成される
請求項1記載の半導体装置。 - 前記第1の内側貫通電極は、前記側壁の一部と前記第1の貫通孔の底部の一部とに沿って形成される
請求項1記載の半導体装置。 - 前記配線層には、前記底部の一部に沿ってパッドが形成される
請求項12記載の半導体装置。 - 前記第1の内側貫通電極は、スリット以外の部分に形成される
請求項1記載の半導体装置。 - 前記絶縁膜は、前記貫通孔の側壁の一部を被覆し、
前記第1の内側貫通電極は、前記絶縁膜により被覆された側壁に沿って形成される
請求項1記載の半導体装置。 - 前記貫通孔の側壁を被覆する無機膜をさらに具備し、
前記絶縁膜は、前記無機膜の一部を被覆する
請求項15記載の半導体装置。 - 前記絶縁膜は、前記貫通孔の側壁のうち複数の領域を被覆する
請求項15記載の半導体装置。 - 前記側壁のうち前記絶縁膜が被覆された部分の面積は、前記絶縁膜により被覆されない部分の面積と異なる
請求項15記載の半導体装置。 - 半導体基板の表面に配線層を形成する配線層形成手順と、
前記半導体基板の裏面から前記表面まで前記半導体基板を貫通する第1の貫通孔を形成する貫通孔形成手順と、
前記第1の貫通孔の側壁を被覆する絶縁膜を形成する絶縁膜形成手順と、
前記第1の貫通孔の側壁の一部に沿って第1の内側貫通電極を形成する内側貫通電極形成手順と
を具備する半導体装置の製造方法。 - 前記貫通電極形成手順において、前記貫通電極をセミアディティブ法により形成する
請求項19記載の製造方法。
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| JP2007103521A (ja) * | 2005-09-30 | 2007-04-19 | Oki Electric Ind Co Ltd | 半導体装置及び半導体装置の製造方法 |
| JP2011096918A (ja) * | 2009-10-30 | 2011-05-12 | Oki Semiconductor Co Ltd | 半導体装置および半導体装置の製造方法 |
| JP2013041914A (ja) * | 2011-08-12 | 2013-02-28 | Advanced Power Device Research Association | 半導体素子および半導体素子の製造方法 |
| JP2013187224A (ja) * | 2012-03-06 | 2013-09-19 | Nippon Telegr & Teleph Corp <Ntt> | 半導体装置の製造方法 |
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| Publication number | Publication date |
|---|---|
| CN116569332A (zh) | 2023-08-08 |
| WO2022158109A1 (ja) | 2022-07-28 |
| US20240055326A1 (en) | 2024-02-15 |
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