WO2021075240A1 - 構造体および加熱装置 - Google Patents
構造体および加熱装置 Download PDFInfo
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- WO2021075240A1 WO2021075240A1 PCT/JP2020/036476 JP2020036476W WO2021075240A1 WO 2021075240 A1 WO2021075240 A1 WO 2021075240A1 JP 2020036476 W JP2020036476 W JP 2020036476W WO 2021075240 A1 WO2021075240 A1 WO 2021075240A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67103—Apparatus for thermal treatment mainly by conduction
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/03—Electrodes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
- H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
- H05B3/283—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/016—Heaters using particular connecting means
Definitions
- This disclosure relates to structures and heating devices.
- the substrate made of ceramics has excellent heat resistance compared to metals and resins.
- aluminum nitride ceramics have high thermal conductivity, and therefore may be used as a structure for placing or holding the object to be processed when heat-treating the object to be processed such as various elements and parts. ..
- a power supply terminal is connected to the electrode layer in order to connect the electrode layer embedded inside the structure to the power supply.
- the structure according to one aspect of the present disclosure has a substrate, an electrode layer, and terminals.
- the substrate is made of ceramics.
- the electrode layer is located inside the substrate.
- the terminals are electrically connected to the electrode layer at the tip. In addition, the terminals come into contact with the electrode layer on the front end surface and the side surface.
- FIG. 1 is a schematic perspective view of the wafer mounting device according to the embodiment.
- FIG. 2 is a schematic cross-sectional view of the structure according to the embodiment.
- FIG. 3 is a schematic enlarged view of the H portion shown in FIG.
- FIG. 4 is a schematic cross-sectional view for explaining an example of a method for producing a substrate according to an embodiment.
- FIG. 5 is a schematic cross-sectional view for explaining an example of a method for producing a substrate according to an embodiment.
- FIG. 6 is a schematic cross-sectional view for explaining an example of a method for producing a substrate according to an embodiment.
- FIG. 7 is a schematic cross-sectional view for explaining an example of a method for producing a substrate according to an embodiment.
- FIG. 8 is a schematic cross-sectional view for explaining an example of a method for producing a substrate according to an embodiment.
- FIG. 9 is a schematic cross-sectional view for explaining an example of a method for producing a substrate according to an embodiment.
- FIG. 10 is a schematic cross-sectional view of the structure according to the first modification.
- FIG. 11 is a schematic cross-sectional view for explaining an example of a method for manufacturing a substrate according to the first modification.
- FIG. 12 is a schematic cross-sectional view for explaining an example of a method for manufacturing a substrate according to the first modification.
- FIG. 13 is a schematic cross-sectional view for explaining an example of a method for manufacturing a substrate according to the first modification.
- FIG. 10 is a schematic cross-sectional view of the structure according to the first modification.
- FIG. 11 is a schematic cross-sectional view for explaining an example of a method for manufacturing a substrate according to the first modification.
- FIG. 12 is a schematic cross-sectional view
- FIG. 14 is a schematic cross-sectional view for explaining an example of a method for manufacturing a substrate according to the first modification.
- FIG. 15 is a schematic cross-sectional view for explaining an example of a method for manufacturing a substrate according to the first modification.
- FIG. 16 is a schematic cross-sectional view of the structure according to the second modification.
- FIG. 17 is a schematic cross-sectional view of the structure according to the third modification.
- FIG. 18 is a schematic cross-sectional view of the structure according to the fourth modification.
- FIG. 19 is a schematic cross-sectional view of the structure according to the fifth modification.
- FIG. 20 is a schematic cross-sectional view of the structure according to the sixth modification.
- FIG. 21 is a schematic cross-sectional view of the structure according to the seventh modification.
- FIG. 21 is a schematic cross-sectional view of the structure according to the seventh modification.
- FIG. 22 is a schematic cross-sectional view of the structure according to the eighth modification.
- FIG. 23 is a schematic cross-sectional view of the structure according to the ninth modification.
- FIG. 24 is a schematic cross-sectional view of the structure according to the tenth modification.
- FIG. 25 is a schematic cross-sectional view of the structure according to the eleventh modification.
- FIG. 26 is a schematic cross-sectional view of the structure according to the twelfth modification.
- FIG. 27 is a schematic cross-sectional view of the structure according to the thirteenth modification.
- FIG. 28 is a schematic cross-sectional view of the structure according to the 14th modification.
- FIG. 29 is a schematic cross-sectional view of the structure according to the fifteenth modification.
- FIG. 30 is a schematic cross-sectional view of the structure according to the 16th modification.
- FIG. 31 is a schematic cross-sectional view of the structure according to the 17th modification.
- FIG. 32 is a schematic top view of the terminal according to the 17th modification.
- FIG. 33 is a schematic cross-sectional view of the structure according to the 18th modification.
- FIG. 34 is a schematic top view of the terminal according to the 18th modification.
- the embodiment a form for carrying out the structure and the heating device according to the present disclosure (hereinafter, referred to as “the embodiment”) will be described in detail with reference to the drawings. It should be noted that this embodiment does not limit the structure and the heating device according to the present disclosure. In addition, each embodiment can be appropriately combined as long as the processing contents do not contradict each other. Further, in each of the following embodiments, the same parts are designated by the same reference numerals, and duplicate description is omitted.
- the vertical upward direction is defined as the Z-axis direction in order to make the explanation easy to understand.
- FIG. 1 is a schematic perspective view of the wafer mounting device 1 according to the embodiment.
- the wafer mounting device 1 is a device on which a semiconductor wafer, a crystal wafer or other wafer (hereinafter, simply referred to as "wafer") is mounted.
- the wafer mounting device 1 has a heating function for heating the mounted wafer, and is mounted on, for example, a substrate processing device that performs plasma treatment or the like on a wafer.
- the wafer mounting device 1 includes a structure 2, a wiring unit 4, a power supply unit 5, and a control unit 6.
- the structure 2 has a disk-shaped base 10 having thickness in the vertical direction (Z-axis direction) and a tubular shaft 20 connected to the base 10.
- a wafer is placed on the upper surface 101 of the substrate 10.
- a shaft 20 is connected to the lower surface 102 of the substrate 10.
- the upper surface 101 and the lower surface 102 of the substrate 10 have substantially the same shape, and both have a diameter larger than that of the wafer.
- An electrode layer (not shown here) as a heating element is located inside the substrate 10.
- the wiring unit 4 electrically connects the electrode layer located inside the base 10 with the power supply unit 5 located outside the base 10.
- the power supply unit 5 is electrically connected to the electrode layer via the wiring unit 4, and supplies electric power to the electrode layer via the wiring unit 4.
- the power supply unit 5 includes a power supply circuit that converts the power supplied from a power supply (not shown) into an appropriate voltage.
- the control unit 6 controls the power supply in the power supply unit 5.
- the wafer mounting device 1 is configured as described above, and is mounted on the wafer mounting surface 101 by generating heat of the electrode layer inside the substrate 10 using the electric power supplied from the power supply unit 5. Heat the wafer.
- FIG. 2 is a schematic cross-sectional view of the structure 2 according to the embodiment. Note that FIG. 2 shows a schematic cross-sectional view taken along the line II-II shown in FIG.
- the electrode layer 11 is located inside the substrate 10.
- the electrode layer 11 includes a first electrode layer 111 and a second electrode layer 112.
- the first electrode layer 111 is an electrode layer located relative to the lower surface 102 side of the substrate 10.
- the second electrode layer 112 is an electrode layer located relative to the upper surface 101 (hereinafter, may be referred to as “wafer mounting surface 101”) side of the substrate 10 in relation to the first electrode layer 111.
- the first electrode layer 111 and the second electrode layer 112 are made of, for example, a metal such as Ni, W, Mo and Pt, or an alloy containing at least one of the above metals.
- the first electrode layer 111 and the second electrode layer 112 extend along the wafer mounting surface 101. Specifically, the first electrode layer 111 and the second electrode layer 112 are stretched over substantially the entire surface of the wafer mounting surface 101 while drawing a predetermined pattern such as a spiral shape or a meander shape.
- the thickness of the first electrode layer 111 and the second electrode layer 112 is, for example, 30 ⁇ m or more and 120 ⁇ m or less.
- the first electrode layer 111 and the second electrode layer 112 are electrically connected via the via conductor 113.
- the electrode layer 11 does not necessarily have to be two layers, and may include at least one layer (for example, the first electrode layer 111).
- the substrate 10 is made of ceramics.
- the ceramics constituting the substrate 10 are mainly composed of, for example, aluminum nitride (AlN), aluminum oxide (Al 2 O 3 , alumina), silicon carbide (SiC), silicon nitride (Si 3 N 4 ) and the like.
- the main component referred to here is, for example, a material that occupies 50% by mass or more or 80% by mass or more of the material.
- the substrate 10 may contain, for example, a sintering aid.
- the sintering aid for example, a mixture of calcium oxide (CaO) and yttrium oxide (Y 2 O 3) is used.
- the upper surface 101 (wafer mounting surface 101) of the substrate 10 and the lower surface 102 are parallel.
- the shape of the substrate 10 is arbitrary.
- the shape of the substrate 10 is a circular shape in a plan view, but the shape is not limited to this, and may be an elliptical shape, a rectangular shape, a trapezoidal shape, or the like in a plan view.
- the dimensions of the substrate 10 are 20 cm or more and 35 cm or less in diameter and 4 mm or more and 30 mm or less in thickness.
- the shaft 20 has a tubular shape, and the upper end thereof is joined to the central portion of the lower surface of the substrate 10.
- the shaft 20 is joined (adhered) to the lower surface 102 of the substrate 10 by an adhesive.
- the shaft 20 may be bonded to the substrate 10 by solid phase bonding.
- the shape of the shaft 20 is arbitrary. In one aspect, the shape of the shaft 20 has a cylindrical shape. As another aspect, the shape of the shaft 20 may be, for example, a square cylinder or the like.
- the material of the shaft 20 is arbitrary. In one embodiment, the material of the shaft 20 is an insulating ceramic. In another aspect, the material of the shaft 20 may be, for example, a conductive material (metal).
- the tubular shaft 20 connects the upper surface 21 joined to the lower surface 102 of the substrate 10, the lower surface 22 located opposite to the upper surface 21, and the upper surface 21 and the lower surface 22, and constitutes the inside of the shaft 20. It has an inner surface 23, and an outer surface 24 that connects the upper surface 21 and the lower surface 22 and constitutes the outer surface of the shaft 20.
- the inner surface 23 is provided parallel to the outer surface 24 along the direction in which the shaft 20 extends. From another viewpoint, the inner surface 23 is provided parallel to a straight line parallel to the thickness direction of the substrate 10. However, the inner surface 23 may be inclined so that the inner diameter of the shaft 20 decreases downward, or may be inclined so that the inner diameter of the shaft 20 increases downward.
- the outer surface 24 can have the same configuration. Thereby, at least one of the inner diameter and the outer diameter of the shaft 20 can be made different from the upper end to the lower end.
- the wiring portion 4 has a terminal 41 and a lead wire 42.
- the terminal 41 is a metal (bulk material) having a certain length in the vertical direction.
- the upper end side of the terminal 41 is located inside the base 10, and the lower end side is located outside the base 10.
- the terminal 41 is electrically connected to the first electrode layer 111.
- the terminal 41 is also electrically connected to the second electrode layer 112 via the via conductor 113.
- the shape of the terminal 41 is arbitrary. In one aspect, the shape of the terminal 41 is columnar.
- the terminal 41 is made of, for example, a metal such as Ni, W, Mo and Pt, or an alloy containing at least one of the above metals.
- FIG. 3 is a schematic enlarged view of the H portion shown in FIG.
- the terminal 41 is electrically connected to the electrode layer 11 (here, the first electrode layer 111) at the tip portion 410. Specifically, the terminal 41 is in contact with the first electrode layer 111 on the front end surface 411 and the side surface 412.
- a power supply terminal is connected to the electrode layer in order to connect the electrode layer embedded inside the structure to the power supply. ..
- the terminal 41 according to the embodiment comes into contact with the first electrode layer 111 on the front end surface 411 and the side surface 412. Therefore, for example, the bonding strength between the terminal 41 and the first electrode layer 111 is higher than that in the case of contacting with the first electrode layer 111 only on the front end surface 411 or the case of contacting with the first electrode layer 111 only on the side surface 412. Can be improved.
- connection between the terminal 41 and the first electrode layer 111 is performed, for example, by heat-shrinking the first electrode layer 111 and bringing it into close contact with the terminal 41 in the manufacturing process of the substrate 10. Further, the bonding between the terminal 41 and the first electrode layer 111 can also be performed by interposing a sealing agent (not shown) in a minute gap between the terminal 41 and the first electrode layer 111.
- the encapsulant contains, for example, aluminum oxide (Al 2 O 3 ) as a main component, calcium oxide (CaO) and yttrium oxide (Y 2 O 3 ).
- the first electrode layer 111 connected to the terminal 41 has a contact portion 15 at a position where it comes into contact with the terminal 41.
- the contact portion 15 is a part of the first electrode layer 111, and its thickness (width in the vertical direction) is thicker than that of other portions in the first electrode layer 111.
- the contact portion 15 projects toward the lower surface 102 side, that is, the side opposite to the wafer mounting surface 101, as compared with other portions of the first electrode layer 111.
- the thickness of the contact portion 15 (maximum thickness excluding the recess 151 described later) is 0.4 mm or more and 3 mm or less, preferably 0.6 mm or more and 2 mm or less.
- the contact portion 15 which is the contact portion with the terminal 41 thicker than the other portions, the contact area with the side surface 412 of the terminal 41 can be further increased. Therefore, the bonding strength between the terminal 41 and the first electrode layer 111 can be further improved. Further, as will be described in detail later, in the manufacturing process of the substrate 10, when a recess for accommodating the tip portion 410 of the terminal 41 is erroneously formed in the first electrode layer 111 by using a drill or the like. It is possible to prevent the 1 electrode layer 111 from penetrating. That is, the manufacturing process of the substrate 10 can be facilitated.
- the substrate 10 has a space 17 around the contact portion 15.
- the space 17 extends to the side of the contact portion 15 and surrounds the entire circumference of the contact portion 15.
- FIGS. 4 to 9. 4 to 9 are schematic cross-sectional views for explaining an example of the method for manufacturing the substrate 10 according to the embodiment.
- a plurality of ceramic green sheets 201 containing aluminum nitride (AlN) or the like as a main component are laminated.
- One (or a plurality of) metal sheets 202 made of a metal or alloy such as tungsten (W) constituting the first electrode layer 111 are laminated on the metal sheet 202, and a plurality of ceramic green sheets 201 are further laminated on the metal sheet 202. Stacked.
- the plurality of ceramic green sheets 201 laminated on the metal sheet 202 are preliminarily formed with an opening 203 for locating the contact portion 15 described above.
- the opening 203 is filled with the tungsten carbide (WC) paste 204.
- the paste 204 may be one that is finally integrated with the first electrode layer 111, and does not necessarily have to be tungsten carbide.
- the paste 204 filled in the opening 203 is dried in the opening 203.
- a plurality of ceramic green sheets 201 are further laminated.
- the laminate is fired at a temperature of 1700 to 1800 ° C., for example, in a nitrogen atmosphere.
- the paste 204 is integrated with the first electrode layer 111 to form the contact portion 15.
- the paste 204 contracts to form a space 17 on the side of the contact portion 15.
- an opening 205 is formed in the substrate 10.
- the opening 205 is formed by using, for example, a drill or the like so as to extend in the vertical direction from the lower surface 102 of the substrate 10 toward the wafer mounting surface 101 (see FIG. 2 and the like).
- a drill or the like so as to extend in the vertical direction from the lower surface 102 of the substrate 10 toward the wafer mounting surface 101 (see FIG. 2 and the like).
- a recess 151 is formed in which a part of the contact portion 15 is recessed in the thickness direction of the contact portion 15.
- the terminal 41 is inserted into the opening 205 (see FIG. 8).
- the tip 410 of the terminal 41 is located inside the recess 151 of the contact 15.
- the sealant 206 is applied around the terminal 41.
- the substrate 10 is then heat treated, for example, in vacuum at 1550 ° C.
- the sealing agent 206 enters the gap between the terminal 41 and the opening 205 due to the capillary phenomenon, so that the gap between the terminal 41 and the opening 205 is sealed. Further, the terminal 41 and the first electrode layer 111 are joined.
- a paste containing metal fine particles of Pt (platinum) or Ni (nickel) as a main component may be applied to the tip of the terminal 41 (the side in contact with the recess 151).
- Pt paste or Ni paste may be applied to the tip of the terminal 41 and then inserting it into the opening 205.
- the terminal 41 and the recess 151 are joined via Pt or Ni.
- the joining strength between the terminal 41 and the contact portion 15 is increased, so that the reliability of the joining between the terminal 41 and the contact portion 15 can be improved.
- FIG. 10 is a schematic cross-sectional view of the structure according to the first modification.
- the structure 2A according to the first modification has a base 10A.
- the substrate 10A has a space 17A wider than the space 17 of the substrate 10 according to the above-described embodiment.
- the space 17 of the substrate 10 according to the above-described embodiment extends only to the side of the contact portion 15, whereas the space 17A extends to the side of the contact portion 15 and the projecting direction (here, here). It also extends in the negative direction of the Z axis).
- the space 17A is interposed between the side surface 152 of the contact portion 15 and the base 10A, and is the protruding surface 153 of the contact portion 15 (the end surface protruding from the other parts of the first electrode layer 111) and the base 10A. Intervene between and.
- FIGS. 11 to 15 are schematic cross-sectional views for explaining an example of a method for manufacturing the substrate 10A according to the first modification.
- the opening 203 is filled with the tungsten carbide (WC) paste 204. Will be done.
- the paste 204 is filled to the extent that it does not fill the opening 203.
- a plurality of ceramic green sheets 201 are further laminated as shown in FIG.
- the laminate is fired at a temperature of 1700 to 1800 ° C., for example, in a nitrogen atmosphere.
- the paste 204 is integrated with the first electrode layer 111 to form the contact portion 15.
- the space 17A is formed around the contact portion 15 due to the shrinkage of the paste 204 and the burning of the resin 207.
- an opening 205 is formed in the substrate 10A.
- the opening 205 is formed by using, for example, a drill or the like so as to extend in the vertical direction from the lower surface 102 of the substrate 10A toward the wafer mounting surface 101 (see FIG. 2 and the like).
- the protruding surface 153 of the contact portion 15 is scraped by a drill or the like to form a recess 151 in which a part of the contact portion 15 is recessed in the thickness direction of the contact portion 15.
- the operator can easily visually confirm the protruding surface 153 of the contact portion 15 through the opening 205. Is. Therefore, the positioning of the recess 151 can be easily performed.
- the terminal 41 is inserted into the opening 205.
- the tip 410 of the terminal 41 is located inside the recess 151 of the contact 15.
- the sealant 206 is applied around the terminal 41.
- the substrate 10 is then heat treated, for example, in vacuum at 1550 ° C.
- the sealing agent 206 enters the gap between the terminal 41 and the opening 205 due to the capillary phenomenon, so that the gap between the terminal 41 and the opening 205 is sealed. Further, the terminal 41 and the first electrode layer 111 are joined.
- FIG. 16 is a schematic cross-sectional view of the structure according to the second modification. Note that FIGS. 16 and 17 to 27, which will be described later, show only the first electrode layer and terminals, and the other configurations are not shown.
- the terminal 41 is connected to a position deviated from the center position of the contact portion 15. As described above, the terminal 41 does not necessarily have to be connected to the center position of the contact portion 15.
- FIG. 17 is a schematic cross-sectional view of the structure according to the third modification.
- the structure 2C according to the third modification has the first electrode layer 111C.
- the contact portion 15C of the first electrode layer 111C according to the third modification has a plurality of protruding surfaces 153a and 153b having different protruding heights. As described above, the protruding surfaces 153a and 153b of the contact portion 15C do not necessarily have to be flat.
- FIG. 18 is a schematic cross-sectional view of the structure according to the fourth modification.
- the structure 2D according to the fourth modification has the first electrode layer 111D.
- the contact portion 15D of the first electrode layer 111D according to the fourth modification has a curved corner portion 155D between the side surface 152D and the protruding surface 153D. By forming the corner portion 155D of the contact portion 15D into a curved surface in this way, stress concentration on the contact portion 15D can be relaxed.
- FIG. 19 is a schematic cross-sectional view of the structure according to the fifth modification.
- the structure 2E according to the fifth modification has the first electrode layer 111D.
- the contact portion 15E of the first electrode layer 111D according to the fifth modification has a curved corner portion 156E between the side surface 152E and another portion of the first electrode layer 111D.
- FIG. 20 is a schematic cross-sectional view of the structure according to the sixth modification.
- the structure 2F according to the sixth modification has a first electrode layer 111F.
- the first electrode layer 111F according to the sixth modification is curved toward the terminal 41 centering on the contact portion 15F. As described above, since the first electrode layer 111F is curved toward the terminal 41, the first electrode layer 111F can easily resist the pressing of the terminal 41. Therefore, the connection between the terminal 41 and the first electrode layer 111F can be made more reliable.
- the first electrode layer 111F need only be curved toward the terminal 41 in at least a part of the region including the contact portion 15F, and does not necessarily have to be curved as a whole.
- the first electrode layer 111F may be curved toward the wafer mounting surface 101, for example. ..
- FIG. 21 is a schematic cross-sectional view of the structure according to the seventh modification.
- the structure 2G according to the seventh modification has a terminal 41G.
- the terminal 41G according to the seventh modification has a reduced diameter portion 413G whose diameter is reduced from the side surface 412G toward the tip surface 411G between the front end surface 411G and the side surface 412G.
- the reduced diameter portion 413G according to the seventh modification is a chamfered corner portion located between the front end surface 411G and the side surface 412G of the terminal 41G.
- the diameter-reduced portion 413G is the C-plane is illustrated, but the diameter-reduced portion 413G may be the R-plane.
- the contact area between the terminal tip portion 410G and the contact portion 15 can be increased. Therefore, the bonding strength between the terminal 41G and the first electrode layer 111 can be further improved.
- FIG. 22 is a schematic cross-sectional view of the structure according to the eighth modification.
- the structure 2H according to the eighth modification has a terminal 41H.
- the terminal 41H according to the eighth modification has a diameter-reduced portion 413H whose diameter is reduced from the side surface 412H toward the tip surface 411H.
- the reduced diameter portion 413H according to the eighth modification is a stepped portion located between the front end surface 411H and the side surface 412H.
- the bonding strength between the terminal 41H and the first electrode layer 111 can be further improved.
- FIG. 23 is a schematic cross-sectional view of the structure according to the ninth modification.
- the structure 2I according to the ninth modification has a terminal 41I.
- the terminal 41I according to the ninth modification has a curved tip surface 411I.
- the tip surface 411I of the terminal 41I curved in this way, the contact area between the tip 410I of the terminal 41I and the contact portion 15 can be increased. Therefore, the bonding strength between the terminal 41I and the first electrode layer 111 can be further improved.
- FIG. 24 is a schematic cross-sectional view of the structure according to the tenth modification.
- the structure 2J according to the tenth modification has a terminal 41J.
- the terminal 41J according to the tenth modification has a tapered shape in which the side surface 412J is reduced in diameter toward the tip surface 411J.
- FIG. 25 is a schematic cross-sectional view of the structure according to the eleventh modification.
- the structure 2K according to the eleventh modification has a terminal 41K.
- the terminal 41K according to the eleventh modification has a reverse taper shape in which the side surface 412K expands in diameter toward the tip surface 411K.
- the tip portion 410K of the terminal 41K into a reverse taper shape in this way, the contact area between the tip portion 410K of the terminal 41K and the contact portion 15 can be increased. Therefore, the bonding strength between the terminal 41K and the first electrode layer 111 can be further improved. Further, by adopting the reverse taper shape, it is possible to prevent the terminal 41K from coming off.
- FIG. 26 is a schematic cross-sectional view of the structure according to the twelfth modification.
- the structure 2L according to the twelfth modification extends diagonally with respect to the protruding direction (here, the Z-axis direction) of the contact portion 15.
- the terminal 41L may extend obliquely with respect to the protruding direction of the contact portion 15, in other words, the thickness direction (vertical direction) of the substrate.
- the thermal expansion of the terminal 41L can be shifted in the left-right direction, so that cracks in the substrate can be suppressed.
- FIG. 27 is a schematic cross-sectional view of the structure according to the thirteenth modification.
- the structure 2M according to the thirteenth modification has a first electrode layer 111M.
- the contact portion 15M of the first electrode layer 111M according to the thirteenth modification has a gap 208 between a part of the bottom surface 151a in the recess 151 and a part of the tip surface 411 in the terminal 41.
- FIG. 28 is a schematic cross-sectional view of the structure according to the 14th modification.
- the structure 2N according to the 14th modification has a first electrode layer 111N.
- the contact portion 15N of the first electrode layer 111N according to the 14th modification projects toward the wafer mounting surface 101 (see FIG. 2) as compared with other portions of the first electrode layer 111N.
- the contact portion 15N does not need to project toward the lower surface 102 of the substrate 10 as in the contact portion 15 shown in FIG. 3, and may project toward the wafer mounting surface 101. ..
- FIG. 29 is a schematic cross-sectional view of the structure according to the fifteenth modification.
- the structure 2O according to the fifteenth modification has the first electrode layer 111O.
- the contact portion 15O of the first electrode layer 111O according to the fifteenth modification is projected toward the wafer mounting surface 101 (see FIG. 2) of the substrate 10 as compared with other parts of the first electrode layer 111O, and is also projected. It also protrudes from the lower surface 102 side of the substrate 10. In this way, the contact portion 15O may project toward both the wafer mounting surface 101 and the lower surface 102. As a result, the contact area between the terminal 41 and the contact portion 15O can be increased. Therefore, the bonding strength between the terminal 41 and the first electrode layer 111O can be further improved.
- FIG. 30 is a schematic cross-sectional view of the structure according to the 16th modification.
- the structure 2P according to the 16th modification has a first via conductor 113a and a second via conductor 113b.
- the first electrode layer 111 and the second electrode layer 112 are connected using a plurality of via conductors (first via conductor 113a and second via conductor 113b), the first electrode layer 111 and the second are The electrical connection with the electrode layer 112 can be made more secure.
- the first electrode layer 111 and the second electrode layer 112 expand or contract in the horizontal direction (direction along the wafer mounting surface 101) due to a temperature change. Such deformation of the first electrode layer 111 and the second electrode layer 112 may cause cracks in the substrate 10.
- the first electrode layer 111 and the second electrode layer 112 are connected by a plurality of via conductors (first via conductor 113a and second via conductor 113b). .. Therefore, according to the structure 2P according to the 16th modification, the thermal deformation of the first electrode layer 111 and the second electrode layer 112 can be suppressed by the plurality of via conductors. Therefore, it is possible to prevent the substrate 10 from being cracked.
- first via conductor 113a and the second via conductor 113b are located on both sides of the contact portion 15, respectively.
- the first via conductor 113a is located on the left side of the paper surface of the contact portion 15, and the second via conductor 113b is located on the right side of the paper surface of the contact portion 15.
- the first electrode layer 111 and the second electrode layer 112 are thermally deformed particularly around the contact portion 15. Can be suppressed.
- the structure 2P when the structure 2P is used, it is possible to prevent the terminal 41 from being separated from the first electrode layer 111 due to thermal deformation of the first electrode layer 111 and the second electrode layer 112. In other words, it is possible to increase the bonding strength between the terminal 41 and the first electrode layer 111 under a usage environment in which the temperature is repeatedly raised and lowered.
- FIG. 31 is a schematic cross-sectional view of the structure according to the 17th modification.
- FIG. 32 is a schematic top view of the terminal according to the 17th modification.
- the structure 2Q according to the 17th modification has a terminal 41Q.
- the terminal 41Q has a recess 415 on the side surface 412.
- the recess 415 is provided at the tip 410 of the terminal 41Q.
- a recess 415 is provided on the side surface 412 of the terminal 41Q so as to face a portion facing the contact portion 15 and a portion facing the substrate 10.
- the sealant 206 has entered the recess 415.
- the recess 415 is filled with the sealant 206.
- the bonding strength between the terminal 41Q and the substrate 10 can be improved. Further, by entering the sealing agent 206 into the recess 415, the bonding strength between the terminal 41Q and the contact portion 15 can be improved. Further, even when an amount of the sealant 206 (for example, pt (platinum)) exceeding the required amount in the manufacturing process is applied, the excess sealant 206 accumulates in the recess 415, so that the sealant 206 is sealed during manufacturing, for example. It is possible to prevent the agent 206 from protruding from the lower surface 102 of the substrate 10.
- an amount of the sealant 206 for example, pt (platinum)
- the number of recesses 415 that the terminal 41Q has may be two or more. Further, the recess 415 may extend from the tip surface 411 of the terminal 41Q to the base end surface.
- FIG. 33 is a schematic cross-sectional view of the structure according to the 18th modification.
- FIG. 34 is a schematic top view of the terminal according to the 18th modification.
- the structure 2R according to the 18th modification has a terminal 41R.
- the terminal 41R has a recess 416 on the tip surface 411.
- the recess 416 is provided at the tip 410 of the terminal 41R.
- the recess 416 is provided on the tip surface 411 of the terminal 41R. Both ends of the recess 416 reach the side surface 412 of the terminal 41R.
- the terminal 41R may have a plurality of recesses 416.
- the terminal 41R may have two recesses 416 that intersect in a cross.
- the terminal 41R may further have a recess 415 similar to the recess 415 of the terminal 41Q according to the 17th modification. In this case, the recess 415 and the recess 416 may be continuous.
- the sealant 206 has entered the recess 416.
- the recess 416 is filled with the sealant 206.
- the bonding strength between the terminal 41R and the substrate 10 can be improved. Further, by entering the sealing agent 206 into the recess 416, the bonding strength between the terminal 41R and the contact portion 15 can be improved. Further, even when an amount of the sealant 206 (for example, pt (platinum)) exceeding the required amount in the manufacturing process is applied, the excess sealant 206 accumulates in the recess 416, so that the sealant 206 is sealed during manufacturing, for example. It is possible to prevent the agent 206 from protruding from the lower surface 102 of the substrate 10.
- an amount of the sealant 206 for example, pt (platinum)
- the structures according to the embodiments include a substrate (10,10A as an example) and an electrode layer (first electrode layers 111, 111C as an example). , 111D, 111F, 111M, 111N, 111O) and terminals (as an example, terminals 41, 41G, 41H, 41I, 41J, 41K, 41L).
- the substrate is made of ceramics.
- the electrode layer is located inside the substrate. The terminals are electrically connected to the electrode layer at the tip.
- the terminal contacts the electrode layer on the front end surface (for example, the tip surface 411, 411G, 411H, 411I, 411J, 411K) and the side surface (for example, the side surfaces 421, 412G, 412H, 412J, 412K). Therefore, according to the structure according to the embodiment, the bonding strength between the terminal and the electrode layer can be improved.
- the electrode layer may have contact portions (for example, contact portions 15, 15C, 15D, 15E, 15F, 15M, 15N, 15O) with terminals.
- the contact portion may be thicker than other portions in the electrode layer.
- the electrode layer may have a recess (for example, a recess 151) in which a part of the contact portion is recessed in the thickness direction of the contact portion.
- the tip of the terminal may be located inside the recess. Since the contact portion is formed thick, it is possible to prevent the electrode layer from being accidentally penetrated when a recess is formed in the contact portion by using a drill or the like in the manufacturing process of the substrate. That is, the manufacturing process of the substrate can be facilitated.
- the structure according to the embodiment may have a gap (for example, a gap 208) between a part of the bottom surface of the recess and a part of the tip surface of the terminal. As a result, heat conduction from the electrode layer to the terminal can be suppressed.
- the electrode layer (for example, the electrode layer 111F) may be curved toward the terminal at least in the region including the contact portion. As a result, the electrode layer can easily resist the pressing of the terminal, so that the bonding between the terminal and the electrode layer can be made more reliable.
- the substrate (as an example, the substrates 10, 10A) may have a space (as an example, spaces 17, 17A) around the contact portion. As a result, it is possible to suppress heat conduction in the direction in which the space exists due to the heat insulating action of the space.
- the space (for example, space 17A) may extend laterally and in the protruding direction of the contact portion. As a result, heat conduction in the direction in which the space exists can be further suppressed.
- the terminal (as an example, the terminal 41J) may have a shape in which the diameter is reduced toward the tip surface (as an example, the tip surface 411J). As a result, the contact area between the tip of the terminal and the contact portion can be increased. Therefore, the bonding strength between the terminal and the electrode layer can be further improved.
- the terminal may have a shape that expands in diameter toward the tip surface (as an example, the tip surface 411K). As a result, the contact area between the tip of the terminal and the contact portion can be increased. Therefore, the bonding strength between the terminal and the electrode layer can be further improved. Further, by adopting the reverse taper shape, it is possible to suppress the disconnection of the terminal.
- the tip surface (tip surface 411I as an example) of the terminal may be curved. As a result, the contact area between the tip of the terminal and the contact portion can be increased. Therefore, the bonding strength between the terminal and the electrode layer can be further improved.
- the wafer mounting device has been described as an example of the heating device, but the heating device according to the present disclosure generates heat by generating heat of the electrode layer inside the substrate to generate an object (for example, one of the substrates). Any object that is placed on the surface of the wafer) may be heated, and the device is not limited to the wafer mounting device.
- Wafer mounting device 2 Structure 4: Wiring unit 5: Power supply unit 6: Control unit 10: Base 11: Electrode layer 15: Contact unit 17: Space 20: Shaft 41: Terminal 42: Lead wire 101: Top surface ( Wafer mounting surface) 102: Bottom surface 111: First electrode layer 112: Second electrode layer 113: Via conductor 113a: First via conductor 113b: Second via conductor 151: Recessed portion 152: Side surface 153: Protruding surface 201: Ceramic green sheet 202: Metal sheet 203: Opening 204: Paste 205: Opening 206: Sealing agent 208: Gap 410: Tip 411: Tip surface 412: Side surface
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- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
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Abstract
Description
まず、実施形態に係るウエハ載置装置の構成について図1を参照して説明する。図1は、実施形態に係るウエハ載置装置1の模式的な斜視図である。
次に、構造体2の構成について図2を参照して説明する。図2は、実施形態に係る構造体2の模式的な断面図である。なお、図2には、図1に示すII-II矢視における模式的な断面図を示している。
図2に示すように、基体10の内部には、電極層11が位置している。本実施形態において、電極層11は、第1電極層111と、第2電極層112とを含む。第1電極層111は、基体10の下面102側に相対的に位置する電極層である。第2電極層112は、第1電極層111との関係において基体10の上面101(以下、「ウエハ載置面101」と記載する場合がある)側に相対的に位置する電極層である。第1電極層111および第2電極層112は、たとえば、Ni、W、MoおよびPt等の金属、または、上記金属の少なくとも1つを含む合金からなる。
シャフト20は、筒状を呈し、上端が基体10の下面中央部に接合されている。1つの態様として、シャフト20は、接着材によって基体10の下面102に接合(接着)される。その他の態様として、シャフト20は、固相接合によって基体10に接合されてもよい。シャフト20の形状は任意である。1つの態様として、シャフト20の形状は、円筒形状を呈している。その他の態様として、シャフト20の形状は、たとえば、角筒などの形状を呈していてもよい。シャフト20の材料は、任意である。1つの態様として、シャフト20の材料は絶縁性のセラミックスである。その他の態様として、シャフト20の材料は、たとえば、導電性の材料(金属)であってもよい。
配線部4は、端子41と、導線42とを有する。端子41は、上下方向にある程度の長さを有する金属(バルク材)である。端子41は、上端側が基体10内に位置し、下端側が基体10外に位置する。図示の例において、端子41は、第1電極層111に電気的に接続されている。また、端子41は、ビア導体113を介して第2電極層112とも電気的に接続されている。端子41の形状は任意である。1つの態様では、端子41の形状は、円柱状を呈している。端子41は、たとえば、Ni、W、MoおよびPt等の金属、または、上記金属の少なくとも1つを含む合金からなる。
次に、上述した基体10の内部構成について図3を参照して具体的に説明する。図3は、図2に示すH部の模式的な拡大図である。
次に、基体10の製造方法の一例について図4~図9を参照して説明する。図4~図9は、実施形態に係る基体10の製造方法の一例を説明するための模式的な断面図である。
次に、上述した実施形態に係る構造体2の変形例について説明する。まず、第1変形例に係る構造体について図10を参照して説明する。図10は、第1変形例に係る構造体の模式的な断面図である。
次に、第1変形例に係る基体10Aの製造方法について図11~図15を参照して説明する。図11~図15は、第1変形例に係る基体10Aの製造方法の一例を説明するための模式的な断面図である。
次に、第2変形例に係る構造体について図16を参照して説明する。図16は、第2変形例に係る構造体の模式的な断面図である。なお、図16および後述する図17~図27には、第1電極層および端子のみを示しており、他の構成については図示を省略している。
次に、第3変形例に係る構造体について図17を参照して説明する。図17は、第3変形例に係る構造体の模式的な断面図である。
次に、第4変形例に係る構造体について図18を参照して説明する。図18は、第4変形例に係る構造体の模式的な断面図である。
次に、第5変形例に係る構造体について図19を参照して説明する。図19は、第5変形例に係る構造体の模式的な断面図である。
次に、第6変形例に係る構造体について図20を参照して説明する。図20は、第6変形例に係る構造体の模式的な断面図である。
次に、第7変形例に係る構造体について図21を参照して説明する。図21は、第7変形例に係る構造体の模式的な断面図である。
次に、第8変形例に係る構造体について図22を参照して説明する。図22は、第8変形例に係る構造体の模式的な断面図である。
次に、第9変形例に係る構造体について図23を参照して説明する。図23は、第9変形例に係る構造体の模式的な断面図である。
次に、第10変形例に係る構造体について図24を参照して説明する。図24は、第10変形例に係る構造体の模式的な断面図である。
次に、第11変形例に係る構造体について図25を参照して説明する。図25は、第11変形例に係る構造体の模式的な断面図である。
次に、第12変形例に係る構造体について図26を参照して説明する。図26は、第12変形例に係る構造体の模式的な断面図である。
次に、第13変形例に係る構造体について図27を参照して説明する。図27は、第13変形例に係る構造体の模式的な断面図である。
次に、第14変形例に係る構造体について図28を参照して説明する。図28は、第14変形例に係る構造体の模式的な断面図である。
次に、第15変形例に係る構造体について図29を参照して説明する。図29は、第15変形例に係る構造体の模式的な断面図である。
次に、第16変形例に係る構造体について図30を参照して説明する。図30は、第16変形例に係る構造体の模式的な断面図である。
次に、第17変形例に係る構造体について図31および図32を参照して説明する。図31は、第17変形例に係る構造体の模式的な断面図である。また、図32は、第17変形例に係る端子の模式的な上面図である。
次に、第18変形例に係る構造体について図33および図34を参照して説明する。図33は、第18変形例に係る構造体の模式的な断面図である。また、図34は、第18変形例に係る端子の模式的な上面図である。
2 :構造体
4 :配線部
5 :電力供給部
6 :制御部
10 :基体
11 :電極層
15 :接触部
17 :空間
20 :シャフト
41 :端子
42 :導線
101 :上面(ウエハ載置面)
102 :下面
111 :第1電極層
112 :第2電極層
113 :ビア導体
113a :第1ビア導体
113b :第2ビア導体
151 :凹部
152 :側面
153 :突出面
201 :セラミックグリーンシート
202 :金属シート
203 :開口
204 :ペースト
205 :開口
206 :封止剤
208 :間隙
410 :先端部
411 :先端面
412 :側面
Claims (14)
- セラミックスからなる基体と、
前記基体の内部に位置する電極層と、
先端部において前記電極層と電気的に接続される端子と
を有し、
前記端子は、先端面および側面において前記電極層と接触する、構造体。 - 前記電極層は、前記端子との接触部を有し、
前記接触部は、前記電極層における他の部位と比較して厚い、請求項1に記載の構造体。 - 前記電極層は、前記接触部の一部を前記接触部の厚み方向に凹ませた凹部を有し、
前記端子の先端部は、前記凹部の内部に位置する、請求項2に記載の構造体。 - 前記凹部における底面の一部と前記端子における前記先端面の一部との間に間隙を有する、請求項3に記載の構造体。
- 前記電極層は、少なくとも前記接触部を含む領域において前記端子に向かって湾曲している、請求項2~4のいずれか一つに記載の構造体。
- 前記基体は、前記接触部の周囲に空間を有する、請求項2~5のいずれか一つに記載の構造体。
- 前記空間は、前記接触部の側方および突出方向に広がる、請求項6に記載の構造体。
- 前記端子は、前記先端面に向かって縮径する形状を有する、請求項1~7のいずれか一つに記載の構造体。
- 前記端子は、前記先端面に向かって拡径する形状を有する、請求項1~7のいずれか一つに記載の構造体。
- 前記端子の前記先端面は、曲面状である、請求項1~9のいずれか一つに記載の構造体。
- 前記端子は、前記先端部における前記側面に凹部を有する、請求項1~10のいずれか一つに記載の構造体。
- 前記端子は、前記先端面に凹部を有する、請求項1~11のいずれか一つに記載の構造体。
- 前記電極層を発熱させて物体を加熱する加熱装置に用いられる、請求項1~12のいずれか一つに記載の構造体。
- 請求項1~13のいずれか一つに記載の構造体と、
前記電極層に電力を供給することにより、前記電極層を発熱させる電力供給部と
を有する、加熱装置。
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JP2021552292A JP7368488B2 (ja) | 2019-10-18 | 2020-09-25 | 構造体および加熱装置 |
US17/769,145 US20230141651A1 (en) | 2019-10-18 | 2020-09-25 | Structure and heating device |
KR1020227012459A KR20220062390A (ko) | 2019-10-18 | 2020-09-25 | 구조체 및 가열 장치 |
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Citations (9)
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JPS57136196U (ja) * | 1981-02-21 | 1982-08-25 | ||
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JP2009188394A (ja) * | 2008-01-08 | 2009-08-20 | Ngk Insulators Ltd | 接合構造及び半導体製造装置 |
JP2015002300A (ja) * | 2013-06-17 | 2015-01-05 | 株式会社Maruwa | 接合構造体及びこれを用いた半導体製造装置 |
JP2018064055A (ja) * | 2016-10-14 | 2018-04-19 | 日本碍子株式会社 | 半導体製造装置用部材及びその製法 |
JP2018185972A (ja) * | 2017-04-26 | 2018-11-22 | 京セラ株式会社 | 試料保持具 |
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JP2003040686A (ja) | 2001-07-27 | 2003-02-13 | Taiheiyo Cement Corp | セラミック部品 |
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2020
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- 2020-09-25 US US17/769,145 patent/US20230141651A1/en active Pending
- 2020-09-25 WO PCT/JP2020/036476 patent/WO2021075240A1/ja active Application Filing
- 2020-09-25 JP JP2021552292A patent/JP7368488B2/ja active Active
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JPS57136196U (ja) * | 1981-02-21 | 1982-08-25 | ||
JP2002313531A (ja) * | 2001-04-17 | 2002-10-25 | Toshiba Ceramics Co Ltd | 面状セラミックスヒーター及び製造方法 |
JP2003188248A (ja) * | 2001-12-19 | 2003-07-04 | Kyocera Corp | ウェハ支持部材 |
JP2003245792A (ja) * | 2002-02-21 | 2003-09-02 | Sumitomo Electric Ind Ltd | 接続構造 |
JP2004087392A (ja) * | 2002-08-28 | 2004-03-18 | Toshiba Ceramics Co Ltd | AlNヒータ及びその製造方法 |
JP2009188394A (ja) * | 2008-01-08 | 2009-08-20 | Ngk Insulators Ltd | 接合構造及び半導体製造装置 |
JP2015002300A (ja) * | 2013-06-17 | 2015-01-05 | 株式会社Maruwa | 接合構造体及びこれを用いた半導体製造装置 |
JP2018064055A (ja) * | 2016-10-14 | 2018-04-19 | 日本碍子株式会社 | 半導体製造装置用部材及びその製法 |
JP2018185972A (ja) * | 2017-04-26 | 2018-11-22 | 京セラ株式会社 | 試料保持具 |
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KR20220062390A (ko) | 2022-05-16 |
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