WO2013069088A1 - ウェーハ収納容器 - Google Patents
ウェーハ収納容器 Download PDFInfo
- Publication number
- WO2013069088A1 WO2013069088A1 PCT/JP2011/075656 JP2011075656W WO2013069088A1 WO 2013069088 A1 WO2013069088 A1 WO 2013069088A1 JP 2011075656 W JP2011075656 W JP 2011075656W WO 2013069088 A1 WO2013069088 A1 WO 2013069088A1
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- WIPO (PCT)
- Prior art keywords
- wafer
- storage container
- loading
- semiconductor wafer
- semiconductor
- Prior art date
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Classifications
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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
- H01L21/673—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 using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/6735—Closed carriers
- H01L21/67383—Closed carriers characterised by substrate supports
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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
- H01L21/673—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 using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/6735—Closed carriers
- H01L21/67386—Closed carriers characterised by the construction of the closed carrier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S206/00—Special receptacle or package
- Y10S206/832—Semiconductor wafer boat
Definitions
- the present invention relates to a wafer storage container for storing a semiconductor wafer when storing or transporting it.
- the wafer storage container is generally provided with a container body for storing a plurality of semiconductor wafers arranged in parallel.
- a wafer loading / unloading opening for loading / unloading semiconductor wafers is formed on the front side.
- a lid for closing the wafer loading / unloading opening is provided to be detachably attached to the wafer loading / unloading opening from the front.
- a rear retainer is disposed in the rear region as viewed from the wafer loading / unloading opening in the container main body, and the lid side retainer is disposed on the inner wall portion of the lid. Is provided.
- the outer edge portions near both front and rear end portions are elastically held by the rear side retainer and the lid side retainer.
- the lid retainer does not hold the semiconductor wafer unless the lid is attached to the wafer loading / unloading opening of the container body. Only the rear side retainer can hold only the rear end side of the semiconductor wafer in the container body.
- a wafer support shelf for supporting the side edge of each semiconductor wafer in the container body so as to support each semiconductor wafer horizontally is provided in the container. It is provided at positions on both the left and right sides when viewed from the wafer loading / unloading opening side in the main body.
- Semiconductor wafers should not be placed on the entire surface of the wafer support shelf when supported by the wafer support shelf. If the outer edge of a semiconductor wafer is placed over the entire area of the arc-shaped wafer support shelf, particles (scraped particles) are likely to be generated due to the friction between the wafer support shelf and the minute irregularities on the semiconductor wafer. This is because the orientation of each semiconductor wafer may vary depending on the surface accuracy (flatness) of the shelf.
- the semiconductor wafer and the wafer support shelf are in point contact or line contact (for example, Patent Document 2), and the outer edge of the semiconductor wafer that is horizontally supported by the left and right wafer support shelves is localized.
- a small wafer support convex part placed on the left and right sides from the center position of the semiconductor wafer as viewed from the wafer loading / unloading opening side is provided on each of the left and right sides to support the wafer in a total of four locations. There is one that is supported on a shelf (for example, Patent Document 3).
- JP 2004-214269 A JP-A-9-64162 US Pat. No. 5,788,082 (Japanese Patent Laid-Open No. 10-70185)
- FIG. 9 shows an example of a state in which the semiconductor wafer W is supported on the wafer support shelves 10 and 10 at four locations in the container main body 1 of the conventional wafer storage container as described above.
- DO is a reference center line (lateral center line on the surface of the semiconductor wafer W) that is parallel to the wafer loading / unloading opening 2 through the center position of the semiconductor wafer W.
- BP is a center line in the front-rear direction on the surface of the semiconductor wafer W perpendicular to the reference center line DO.
- the back-side wafer support convex portion A provided on the back side from the center position of the semiconductor wafer W is provided in a direction that forms, for example, 45 ° with respect to the reference center line DO.
- the near-side wafer support convex portion B provided on the near side from the center position of W is provided in a direction that forms, for example, 20 ° with respect to the reference center line DO.
- FIG. 11 shows measurement data (actual measurement values) of the deflection amount at each position of the semiconductor wafer W when the semiconductor wafer W having a diameter of 450 mm is supported on the wafer support shelves 10 and 10.
- the amount of deflection is very large. Even in the case of a semiconductor wafer W having a diameter of 300 mm, the amount of deflection becomes large if the thickness is smaller than the standard thickness.
- the robot arm for taking out the semiconductor wafers W one by one from the container body cannot be inserted well into the gap between the adjacent semiconductor wafers W. Inconvenience occurs. However, if the outer peripheral portion of the semiconductor wafer W is placed on the entire surface of the wafer support shelf 10 so that the semiconductor wafer W does not bend, the above-described problems occur.
- An object of the present invention is to provide a wafer storage container that can be controlled so as not to hinder the removal by a robot arm by the number of convex portions.
- a wafer storage container is formed on the front surface of a container body for storing a plurality of semiconductor wafers arranged in parallel and a semiconductor wafer in and out of the container body.
- a wafer storage container provided with a wafer support shelf on which the outer edge portions of a plurality of semiconductor wafers are individually placed at positions on both the left and right sides when viewed from the wafer loading / unloading opening side in the container body
- the outer edge of the semiconductor wafer is locally located on the wafer support shelves arranged on both sides.
- Wafer support protrusions being location is in one place and the front side to the rear side from the center position of the semiconductor wafer when viewed from the wafer loading and unloading opening side are those provided by two places.
- the second front-side wafer support convex portion far from the reference center line passing through the center position of the semiconductor wafer and parallel to the wafer loading / unloading opening. May be provided in a direction in a range of 45 ° ⁇ 15 ° with respect to the reference center line.
- the first front wafer support convex portion closer to the reference center line among the front wafer support convex portions provided at two positions on the left and right sides from the center position of the semiconductor wafer is The relative positional relationship between the first and second front wafer support convex portions is different in the range of 10 ° to 30 ° around the center position of the semiconductor wafer. You may do it.
- the semiconductor wafer in a state where the semiconductor wafer is supported on the wafer support shelf, the semiconductor wafer may be in contact with and placed on the first and second front side wafer support convex portions at the same time.
- the front wafer support convex portion may be provided at a lower position within a range of 0.2 mm or less than the first front wafer support convex portion.
- the back side wafer support convex part provided in one place on either side may be provided in the position lower than any of the near side wafer support convex parts provided in two places on either side.
- the wafer support convex portions on which the outer edge portions of the semiconductor wafer are locally placed on the wafer support shelves arranged on the left and right sides as viewed from the wafer loading / unloading opening are viewed from the wafer loading / unloading opening side.
- FIG. 1 It is a plane sectional view in the state where the lid is not attached to the wafer storage container concerning the 1st example of the present invention. It is a perspective view which shows the whole structure of the wafer storage container which concerns on the 1st Example of this invention. In the state where the lid is not attached to the wafer storage container according to the first embodiment of the present invention and the semiconductor wafer is placed on the wafer support shelf, FIG. It is a partial expansion perspective view which expands and shows partially the wafer support convex part formed in the wafer support shelf of the wafer storage container concerning the 1st example of the present invention.
- Measurement data (measurement of deflection amount) at each position of the semiconductor wafer when the lid is not attached to the wafer storage container according to the first embodiment of the present invention and the semiconductor wafer is placed on the wafer support shelf. Value). It is a plane sectional view in the state where a lid is not attached to a wafer storage container concerning the 2nd example of the present invention. In the state where the lid is not attached to the wafer storage container according to the second embodiment of the present invention and the semiconductor wafer is placed on the wafer support shelf, FIG. Measurement data (measurement of deflection amount) at each position of the semiconductor wafer when the lid is not attached to the wafer storage container according to the second embodiment of the present invention and the semiconductor wafer is placed on the wafer support shelf. Value).
- surface which shows the measurement data (measured value) of the deflection amount in each position of a semiconductor wafer when a semiconductor wafer is supported by the conventional wafer support shelf.
- FIG. 2 is a perspective view of the wafer storage container according to the first embodiment of the present invention.
- FIG. 1 is a cross-sectional plan view of the wafer storage container as viewed from above with no lid attached.
- the container body 1 is a container body for storing a plurality of semiconductor wafers W formed in a thin disk shape in a state of being arranged in parallel.
- the container body 1 is made of a plastic material such as polybutylene terephthalate (PBT) or polycarbonate (PC).
- the container main body 1 When the semiconductor wafer W is taken in and out of the container main body 1, the container main body 1 is arranged in a state where each semiconductor wafer W is stored in a horizontal direction, as shown in FIG.
- the semiconductor wafer W has a diameter of 450 mm, for example.
- FIG. 2 shows a state in which only one semiconductor wafer W is stored at the lowest position in the container body 1.
- a wafer loading / unloading opening 2 for loading / unloading the semiconductor wafer W is formed in the front surface of the container body 1.
- the surface in which the wafer loading / unloading opening 2 is formed among the surfaces of the container body 1 is referred to as a “front surface”.
- a lid 3 for closing the wafer loading / unloading opening 2 is provided so as to be detachable from the wafer loading / unloading opening 2 from the front.
- the lid 3 is not shown in FIG.
- the lid 3 is provided with a known locking mechanism or the like for locking the state where the lid 3 is attached to the wafer loading / unloading opening 2, and description thereof will be omitted.
- the outer edge portions of a plurality of semiconductor wafers W are individually positioned and held in the container body 1 in the region on the back side when viewed from the wafer loading / unloading opening 2 in the container body 1.
- a rear retainer 5 is disposed.
- the rear side retainer 5 may be a known one, and for example, a portion for holding each semiconductor wafer W is formed in a horizontal V-groove shape.
- the outer edge portions of the plurality of semiconductor wafers W are individually elastically pressed from the wafer loading / unloading opening 2 side to the inner side retainer 5 side on the inner wall portion of the lid 3.
- a known lid side retainer 6 is provided.
- the V-groove-shaped portion that comes into contact with the outer peripheral portion of each semiconductor wafer W has elasticity and is elastically deformed.
- it is provided with a configuration that is easily supported by a support member, since it is a known one, its detailed illustration is omitted.
- Wafer support shelves 10 and 10 are provided for support.
- the wafer support shelves 10 and 10 are provided at equal intervals, for example, 25 steps on the left and right according to the number of semiconductor wafers W accommodated in the container body 1.
- Each semiconductor wafer W is supported by the wafer support shelves 10 and 10 on both the left and right sides in the container body 1 when the lid 3 is not attached to the wafer loading / unloading opening 2. Keep state.
- the wafer support shelves 10 and 10 and the rear retainer 5 are both formed integrally with the container body in this embodiment, but one or both of them are formed as separate parts from the container body. A configuration attached to the container body may be used. Further, the rear retainer 5 may be formed on the innermost part of the wafer support shelves 10 and 10.
- the wafer support shelves 10, 10 arranged on the left and right sides as viewed from the wafer loading / unloading opening 2 are attached to the wafer loading / unloading opening 2 so that the positional relationship with the semiconductor wafer W is schematically shown in FIG.
- Wafer support convex portions A, B1, and B2 on which the outer edge portion of the semiconductor wafer W is locally placed in a state where the semiconductor wafer W is not placed are located on the far side from the center position of the semiconductor wafer W when viewed from the wafer loading / unloading opening 2 side. Two places are provided on the front side and the front side.
- Each wafer support convex part A, B1, B2 is a small surface formed at a position slightly higher than the other regions of the wafer support shelves 10, 10 where the wafer support convex parts A, B1, B2 are formed. .
- Each of the wafer support protrusions A, B1, and B2 is not so narrow as to be a perfect point, but as shown in an enlarged view of an example of the back wafer support protrusion A in FIG. Compared to the total area of 10, 10, there is only a very small area.
- the back side wafer support convex portions A provided at the left and right sides from the center position of the semiconductor wafer W pass through the center position of the semiconductor wafer W and It is provided in a direction in a range of 45 ° (about ⁇ 5 °) with respect to the parallel reference center line DO.
- the first front wafer support convex portion B1 closer to the reference center line DO among the front side wafer support convex portions B1 and B2 provided at two positions on the left and right sides from the center position of the semiconductor wafer W is the reference It is provided in the direction of a range that forms 20 ° (about ⁇ 5 °) with respect to the center line DO.
- the second front wafer support convex portion B2 far from the reference center line DO among the front wafer support convex portions B1 and B2 provided at two positions on the left and right sides is 45 with respect to the reference center line DO. It is provided in the direction of a range that forms an angle (about ⁇ 15 °).
- FIG. 5 shows the amount of deflection at each position of the semiconductor wafer W when the semiconductor wafer W is placed on the wafer support shelves 10 and 10 of the wafer storage container 1 according to the first embodiment configured as described above. It is a chart which shows the measurement data (actual value). Compared with the conventional wafer storage container shown in FIG. 11, not only the outer edge portion of the semiconductor wafer W but also the deflection amount of the semiconductor wafer W on the front-rear direction center line BP is greatly reduced.
- FIG. 6 is a plan cross-sectional view of a wafer storage container according to the second embodiment of the present invention, and the second front wafer support convex portion B2 is located at the reference center line DO as schematically shown in FIG. On the other hand, it is provided in the direction of a range of 30 °. The rest is the same as the first embodiment. Even if configured in this manner, as shown in FIG. 8, the amount of deflection of the semiconductor wafer W in the state where the lid 3 is not attached to the wafer loading / unloading opening 2 is less than that of the first embodiment. Can also be reduced.
- the position of the second front-side wafer support convex portion B2 can be provided in a larger angular direction with respect to the reference center line DO than in the first embodiment.
- the position gradually moves away from the side wall of the container main body 1 that is, the depth of the wafer support shelf 10 becomes deep
- the positional accuracy of the second front wafer support convex portion B2 is lowered in manufacturing.
- the maximum is about 60 °.
- the relative positional relationship between the first and second front wafer support convex portions B1 and B2 is provided in different directions in the range of 10 ° to 30 ° around the center position of the semiconductor wafer W. It is desirable.
- the semiconductor wafer W is in contact with and placed on the first and second front side wafer support convex portions B1, B2 at the same time.
- the second front wafer support convex portion B2 may be provided at a lower position in the height direction within 0.2 mm than the first front wafer support convex portion B1. .
- the rear wafer support convex portion A provided at one place on the left and right is provided at a position lower than any of the front wafer support convex portions B1 and B2 provided at two locations on the left and right sides (that is, If the back side is slightly lowered), a good balance in holding the semiconductor wafer W is often obtained.
- the diameter of the semiconductor wafer W accommodated in the container main body 1 may be other than 450 mm.
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- Condensed Matter Physics & Semiconductors (AREA)
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- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Packaging Frangible Articles (AREA)
Abstract
Description
図2は、本発明の第1の実施例に係るウェーハ収納容器の斜視図。図1は、そのウェーハ収納容器に蓋体が取り付けらていない状態を上から見たときの平面断面図である。
2 ウェーハ出し入れ開口
3 蓋体
5 奥側リテーナ
6 蓋側リテーナ
10 ウェーハ支持棚
A 奥側ウェーハ支持凸部
B1,B2 手前側ウェーハ支持凸部
W 半導体ウェーハ
Claims (6)
- 半導体ウェーハを複数並列に並べた状態で収納するための容器本体と、上記容器本体に上記半導体ウェーハを出し入れするために上記容器本体の前面に形成されたウェーハ出し入れ開口と、上記ウェーハ出し入れ開口を塞ぐために上記ウェーハ出し入れ開口に着脱自在に前方から取り付けられる蓋体と、上記蓋体が上記ウェーハ出し入れ開口に取り付けられていない状態の時に上記半導体ウェーハを水平に支持するように上記容器本体内の上記ウェーハ出し入れ開口側から見て左右両側の位置において上記複数の半導体ウェーハの外縁部が個別に載置されるウェーハ支持棚とを備えたウェーハ収納容器において、
上記ウェーハ出し入れ開口から見て左右両側に配置された上記ウェーハ支持棚に各々、上記半導体ウェーハの外縁部が局部的に載置されるウェーハ支持凸部が、上記ウェーハ出し入れ開口側から見て上記半導体ウェーハの中心位置より奥側に一か所と手前側に二箇所ずつ設けられていることを特徴とするウェーハ収納容器。 - 請求項1のウェーハ収納容器において、左右に二か所ずつ設けられた上記手前側ウェーハ支持凸部のうち、上記半導体ウェーハの中心位置を通り上記ウェーハ出し入れ開口と平行をなす基準中心線から遠い方の第2の手前側ウェーハ支持凸部が、上記基準中心線に対して45°±15°をなす範囲の方向に設けられているウェーハ収納容器。
- 請求項2のウェーハ収納容器において、上記半導体ウェーハの中心位置より手前側の左右に二箇所ずつ設けられた手前側ウェーハ支持凸部のうち上記基準中心線に近い方の第1の手前側ウェーハ支持凸部が、上記基準中心線に対して20°±5°をなす範囲の方向に設けられ、上記第1と第2の手前側ウェーハ支持凸部の相対的位置関係が、上記半導体ウェーハの中心位置回りにおいて10°~30°の範囲で相違しているウェーハ収納容器。
- 請求項3のウェーハ収納容器において、上記ウェーハ支持棚に上記半導体ウェーハが支持された状態において、上記半導体ウェーハが上記第1と第2の手前側ウェーハ支持凸部に同時に接触、載置された状態になるウェーハ収納容器。
- 請求項4のウェーハ収納容器において、上記第2の手前側ウェーハ支持凸部が、上記第1の手前側ウェーハ支持凸部より0.2mm以内の範囲で低い位置に設けられているウェーハ収納容器。
- 請求項1のウェーハ収納容器において、左右に一か所ずつ設けられた上記奥側ウェーハ支持凸部が、左右に二箇所ずつ設けられた上記手前側ウェーハ支持凸部のどれよりも低い位置に設けられているウェーハ収納容器。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US14/356,852 US8960442B2 (en) | 2011-11-08 | 2011-11-08 | Wafer storing container |
PCT/JP2011/075656 WO2013069088A1 (ja) | 2011-11-08 | 2011-11-08 | ウェーハ収納容器 |
JP2013542730A JP6018075B2 (ja) | 2011-11-08 | 2011-11-08 | ウェーハ収納容器 |
KR1020147011829A KR101738219B1 (ko) | 2011-11-08 | 2011-11-08 | 웨이퍼 수납용기 |
TW101140965A TWI544563B (zh) | 2011-11-08 | 2012-11-05 | Store the wafer container |
Applications Claiming Priority (1)
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PCT/JP2011/075656 WO2013069088A1 (ja) | 2011-11-08 | 2011-11-08 | ウェーハ収納容器 |
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WO2013069088A1 true WO2013069088A1 (ja) | 2013-05-16 |
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PCT/JP2011/075656 WO2013069088A1 (ja) | 2011-11-08 | 2011-11-08 | ウェーハ収納容器 |
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US (1) | US8960442B2 (ja) |
JP (1) | JP6018075B2 (ja) |
KR (1) | KR101738219B1 (ja) |
TW (1) | TWI544563B (ja) |
WO (1) | WO2013069088A1 (ja) |
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US10643876B2 (en) * | 2016-06-28 | 2020-05-05 | Murata Machinery, Ltd. | Substrate carrier and substrate carrier stack |
US10573545B2 (en) * | 2016-06-28 | 2020-02-25 | Murata Machinery, Ltd. | Substrate carrier and substrate carrier stack |
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- 2011-11-08 KR KR1020147011829A patent/KR101738219B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
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TW201332039A (zh) | 2013-08-01 |
US8960442B2 (en) | 2015-02-24 |
TWI544563B (zh) | 2016-08-01 |
KR101738219B1 (ko) | 2017-05-19 |
JPWO2013069088A1 (ja) | 2015-04-02 |
KR20140074975A (ko) | 2014-06-18 |
JP6018075B2 (ja) | 2016-11-02 |
US20140367307A1 (en) | 2014-12-18 |
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