JP4965472B2 - Storage container for processing jig - Google Patents

Description

  The present invention relates to a storage container for a processing jig on which various substrates made of a semiconductor wafer or the like are mounted.

  A semiconductor wafer is mounted on a processing jig called a dicing tape frame at the time of manufacturing a semiconductor package, and the ring frame of the processing jig is generally stored in a storage container. Although not shown, this type of storage container has a pair of supports that support an SUS ring frame that is formed so as to protrude from an aluminum container main body having front and rear openings, and the inner surfaces of both side walls of the container main body. (Refer to patent documents 1 and 2). In this storage container, a plurality of pairs of support pieces are arranged at intervals in the vertical direction of the container main body, and a space between adjacent support pieces in the vertical direction is partitioned into an insertion groove for a ring frame.

  By the way, because this type of storage container is transported, transported, or transported by an operator, the ring frame may jump out of the container body and drop off when transported, transported, or transported. In order to regulate the above, various regulation methods are adopted.

As the regulation method, (1) a method of attaching a restraining part to the front part or the rear part of a pair of support pieces, (2) a rotating piece is supported on both sides of the opening of the container body, and the opening of the container body is supported by the rotating piece. (3) A slide wall that forms part of a plurality of support pieces is slidable on each side wall of the container body, and the slide wall is slid vertically. And a method of sandwiching the ring frame.
JP-A-8-80989 JP 2005-508274 Gazette

  Conventional storage containers for processing jigs are made of aluminum as described above, and the container main body and the plurality of support pieces are simply manufactured. Therefore, conductive foreign matter is generated along with the sliding contact between the support pieces and the ring frame. As a result, there is a problem that the semiconductor wafer and the ring frame are contaminated.

  In addition, the conventional storage container for the processing jig employs various regulation methods for regulating the ring frame from popping out from the container body. In the case of the methods (1) and (2), the ring Although it is possible to regulate the popping out of the frame, it is not possible to prevent the ring frame from shaking up and down due to vibration during transportation, transportation, and transportation, and this causes a major problem that damages the semiconductor wafer and ring frame Will be newly generated. In the case of the method (3), although it is possible to prevent the ring frame from rattling in the vertical direction, a slide operation of the slide wall is required, and the configuration of the container body is complicated, and the parts The score may increase.

  The present invention has been made in view of the above, and it is possible to suppress the generation of foreign matters accompanying the contact between the support piece and the ring frame, to suppress the shakiness of the ring frame, and to simplify the configuration of the container main body. It aims at providing the storage container for processing jigs which can reduce a score.

In the present invention, in order to solve the above-mentioned problems, a box-shaped container body having front and rear portions opened, and a ring of a processing jig on which semiconductor wafers are mounted, are formed so as to face the inner surfaces of both side walls of the container body. A pair of support pieces for horizontally supporting the frame and a lid for detachably opening and closing the open front portion of the container body, and at least both side walls of the container body and the pair of support pieces are slidable resin Formed by a molding material containing
Between the upper front part and the upper rear part of a pair of opposite side walls of the container body, the handle for operation is supported so as to be raised and lowered, and a plurality of pairs of support pieces are arranged at intervals in the vertical direction of the container body, A space between adjacent support pieces is formed in a ring frame insertion groove, and a stopper facing the rear side of the ring frame is provided at substantially the rear part of either the support piece or the insertion groove. The stopper has an inclined surface that regulates the shakiness of the ring frame ,
The lid body is formed in a substantially dish-shaped cross section to give elasticity, and a plurality of linear protrusions that position and clamp the front part of the ring frame are formed in the vertical direction of the center part of the inner surface of the lid body. A bulging portion that is pressed against both sides of the front portion of the ring frame is integrally formed on both inner side portions of the ring frame, and a locking portion that is locked to the outer peripheral surface of the front portion of the container body is formed on the peripheral portion of the lid body. It is characterized by that.

In addition, at least one of the substantially front portion and the substantially central portion of the support piece is provided with a protrusion that faces the side portion of the ring frame, and the protrusion gradually narrows toward the lower support piece. A surface can be formed.

Here, the container body in the claims may be transparent, opaque, or translucent. For semiconductor wafers, 200 mm, 300 mm, and 450 mm types are applicable. Further, the ring frame of the processing jig may be supported by the support piece in a state where the substrate is mounted, or may be supported by the support piece in a single state where the substrate is not mounted. The ring frame may be a hollow ring shape, but a cutout, a straight portion, or the like may be formed on the outer peripheral surface, and the outer peripheral surface may be a polygon or the like. The substantially rear portion includes a rear portion including a rear end portion and a portion recognized as a rear portion.

The substantially front portion of the support piece includes a front portion including a front end portion and a portion recognized as a front portion. Similarly, the substantially central portion of the support piece includes a central portion and a portion recognized as the central portion. Further, the lid may be transparent, opaque, or translucent .

According to the present invention, there is an effect that it is possible to effectively suppress the generation of foreign matters accompanying the contact between the support piece and the ring frame. Further, the play of the ring frame can be suppressed, and there is an effect that the configuration of the container body can be simplified and the number of parts can be reduced. In addition, since a plurality of protrusions and bulges that interfere with the front part of the ring frame are arranged on the inner surface of the lid, it is possible to more effectively prevent the ring frame stored in the container body from rattling. Can be suppressed.

  Further, at least one of the substantially front portion and the substantially central portion of the support piece is provided with a protrusion facing the side portion of the ring frame, and the inclined surface gradually narrows toward the lower support piece. Since the insertion groove into which the ring frame is inserted can be filled with the protrusion, it is possible to prevent the ring frame from rattling due to vibration or the like. Further, since the guide function of the inclined surface of the protrusion is less likely to interfere with the insertion and removal of the ring frame in the insertion groove, at least prevention of damage to the ring frame can be expected.

  Hereinafter, a preferred embodiment of a storage container for a processing jig according to the present invention will be described with reference to the drawings. The storage container for a processing jig in this embodiment is a semiconductor as shown in FIGS. A container main body 10 that accommodates the processing jig 1 on which the wafer W is mounted in a removable manner, and a pair of support pieces 20 that are provided on both side walls 14 of the container main body 10 and support the ring frame 2 of the processing jig 1. And a transparent lid 30 that opens and closes the opened front portion of the container body 10.

  As shown in FIG. 4, the semiconductor wafer W is made of, for example, a silicon wafer having a diameter of 200 mm that is sliced thinly and roundly, and an orientation flat for alignment and a substantially semicircular notch in a plane are selectively formed on the periphery. .

  As shown in FIGS. 1, 4, and 5, the processing jig 1 includes a ring frame 2 having a hollow that can accommodate a semiconductor wafer W, and the rear surface of the ring frame 2 can cover the hollow from below. A flexible adhesive layer 3 is detachably adhered, and the semiconductor wafer W is detachably adhered on the adhesive layer 3. The ring frame 2 is formed in a hollow flat plate with a predetermined material including SUS, resin, etc., and positioning notches 4 are formed in substantially triangular shapes on both sides of the front part, and in the center of the rear surface, An RFID tag 5 for identifying a moving body is attached.

  As shown in FIGS. 1 to 3, the container body 10 includes a rectangular bottom plate 11 having a size capable of accommodating the processing jig 1, and a top plate 13 having the same shape facing the bottom plate 11 with an interval from above. And a pair of side walls 14 that vertically connect both side portions of the bottom plate 11 and the top plate 13, and are configured in a rectangular box shape in which the front and rear portions are respectively opened, and a process in which the semiconductor wafer W is mounted The jig 1 or the ring frame 2 of the processing jig 1 on which the semiconductor wafer W is mounted functions so as to be aligned and stored horizontally via a transfer robot (not shown).

  The bottom plate 11, the top plate 13, and the pair of side walls 14 of the container body 10 are each injection-molded with a molding material containing a resin having excellent sliding properties, for example, and assembled with a plurality of fasteners such as screws. Examples of the slidable molding material include polycarbonate and polyacetal containing PTFE particles. Further, as shown in FIG. 1, a rectangular concave portion 12 that contributes to insertion / removal of the lower ring frame 2 is cut out at the front end portion of the inner surface of the bottom plate 11, and between the upper front portion and the upper rear portion of the pair of side walls 14 facing each other. The handle 15 for gripping operation having a substantially hat-shaped cross section is pivoted so as to be able to undulate (see FIG. 2).

  As shown in FIG. 1 and FIG. 9, the pair of support pieces 20 are integrally formed of the above-described molding material containing a resin having excellent slidability, and are formed so as to protrude opposite to the inner surfaces of both side walls of the container body 10. It functions to support both sides of the ring frame 2 substantially horizontally. A plurality of the pair of support pieces 20 are arranged at predetermined intervals in the vertical direction of the container body 10, and the space between the support pieces 20 adjacent to each other in the vertical direction is an insertion groove 21 for the ring frame 2. Each of the support pieces 20 is formed into an elongated plate extending in the front-rear direction of the container body 10.

  As shown in FIG. 9, a stopper 22 is formed integrally on the rear surface of the lower surface of each support piece 20 at the rear side of the ring frame 2 so as to interfere with and face the side of the ring frame 2. An inclined surface 23 that gradually narrows toward 20 is formed smoothly, and this inclined surface 23 faces the rear surface of the ring frame 2 with a gap. These stoppers 22 and the inclined surface 23 are also molded by the molding material containing a resin having excellent slidability. Each insertion groove 21 is formed to extend in the front-rear direction of the container body 10 similarly to the support piece 20, and has a height (width) equal to or greater than the thickness of the ring frame 2.

  As shown in FIGS. 6 to 8, the lid 30 is formed into a substantially dish-shaped cross section having elasticity by a molding material containing a predetermined resin, and is detachably fitted to the opened front portion of the container body 10. The front substantially rectangular lid 30 has a plurality of substantially linear protrusions 31 arranged in the vertical direction of the central portion thereof, which interfere with the front portion of the ring frame 2 and are positioned and sandwiched. A substantially rectangular bulging portion 32 that presses against both sides of the front portion of the frame 2 and suppresses rattling is integrally formed in three dimensions.

As shown in FIGS. 6 and 8, the peripheral portion of the lid body 30 is bent toward the protruding portion 31 and the bulging portion 32 to form a substantially frame shape, and the container body 10 is opened on both sides of the upper and lower portions. A locking portion 33 for the lid 30 that locks to the front outer peripheral surface is integrally bulged.
In addition, it is also possible to form integrally the latching | locking part 33 latched to the right-and-left both sides of the peripheral part of the cover body 30 to the front outer peripheral surface which the container main body 10 opened.

  In the above, when the ring frame 2 of the processing jig 1 is accommodated in the container main body 10, the ring frame 2 of the processing jig 1 may be horizontally inserted into the container main body 10 from the front by the transport robot.

  Then, the ring frame 2 is inserted horizontally into the insertion groove 21 of the container body 10 and slides, and both side portions of the ring frame 2 are supported substantially horizontally from below by the pair of support pieces 20, and the inclined surface 23 of the stopper 22. The ring frame 2 is guided and contacted / stopped, so that the ring frame 2 is properly positioned and accommodated in the container body 10.

  When the ring frame 2 of the processing jig 1 is housed in the container body 10, the lid body 30 is detachably fitted to the opened front portion of the container body 10, and the plurality of protrusions 31 of the lid body 30 are formed. By holding the front portion of the ring frame 2 and restricting its movement, rattling in the vertical direction of the ring frame 2 due to vibration during transportation, transportation, and transportation is suppressed and prevented.

  According to the above configuration, since the container body 10 and the plurality of support pieces 20 are not made of aluminum but are made of a lightweight resin having excellent slidability, the conductive foreign matter is prevented from sliding with the ring frame 2 and the support piece 20. Very rarely occurs. Therefore, contamination of the semiconductor wafer W and the ring frame 2 can be prevented. Moreover, when not only the both side walls 14 and the support pieces 20 of the container body 10 but also the processing jig 1 is made of a slidable resin, it is possible to reliably prevent the generation of conductive foreign substances due to sliding contact. . Further, since the rear portion of the ring frame 2 is restricted by the stopper 22 during the above-described operation, the inserted ring frame 2 is effectively prevented from being displaced or dropped.

  Further, since the tapered inclined surface 23 of the stopper 22 gradually fills the extra space of the insertion groove 21, it is possible to suppress the rattling of the ring frame 2 in the vertical direction due to vibrations, and to prevent the semiconductor wafer W And the ring frame 2 is not damaged. Furthermore, since a conventional slide wall or the like is not required, the configuration of the container body 10 can be simplified, and the number of parts can be reduced.

  Next, FIGS. 10 and 11 show a second embodiment of the present invention. In this case, it is opposed to the center of the lower surface of each support piece 20 with a gap on the side surface of the ring frame 2. The projections 24 are formed so as to project integrally, and the projections 24 are formed in a tapered trapezoidal shape so that both side portions thereof are formed into smooth inclined surfaces 25 that gradually narrow as they go to the lower support piece 20. The other parts are substantially the same as those in the above embodiment, and thus description thereof is omitted.

  Also in this embodiment, the same effect as the above embodiment can be expected, and the projection groove 24 can further fill the insertion groove 21. Therefore, even if the lid 30 is omitted, the ring accompanying vibration Obviously, the vertical shaking of the frame 2 can be remarkably suppressed. Further, the ring frame 2 is smoothly slidably brought into contact with the slanted inclined surface 25 having the guide function of the protrusion 24 and does not stop in the middle of insertion, so that the insertion and removal of the ring frame 2 is not hindered. Damage to W and the ring frame 2 can be prevented.

  Next, FIG. 12 shows a third embodiment of the present invention. In this case, a protrusion 24A that faces the front surface of the lower surface of each support piece 20 with a gap on the side surface of the ring frame 2 is provided. The protrusion 24A is formed in a tapered trapezoidal shape, and both sides thereof are formed into a smooth inclined surface 25 gradually narrowing toward the lower support piece 20, and the ring frame 2 is formed on the inclined surface 25. Is slidable. The other parts are substantially the same as those in the above embodiment, and thus description thereof is omitted.

  Also in this embodiment, the same effect as the above embodiment can be expected, and the extra space of the insertion groove 21 can be further filled by the protrusion of the further protrusion 24A, so that the ring frame 2 can be put in and out of the work. Obviously, it is possible to greatly suppress and prevent rattling in the vertical direction. In addition, since the ring frame 2 is smoothly guided to the slanting inclined surface 25 having the guide function of the protrusion 24A and slides in the front-rear direction, there is no hindrance to the insertion and removal of the ring frame 2, and the semiconductor wafer W and the ring frame 2 damage prevention can be greatly expected.

  Note that the storage container for the processing jig 1 according to the present invention is not limited to the above embodiment. For example, in the above embodiment, the recess 12 is cut out at the front end of the inner surface of the bottom plate 11, but the recess 12 that contributes to the insertion and removal of the ring frame 2 may be formed at at least one of the front and rear end portions of the inner surface of the bottom plate 11. The recess 12 that contributes to the insertion and removal of the ring frame 2 may be formed on at least one of the front and rear end portions of the inner surface of the top plate 13.

  In the above embodiment, the support piece 20 is a long and thin plate extending in the front-rear direction of the container body 10. However, the support piece 20 is not limited to this, and the support piece 20 is supported if it does not particularly hinder the storage of the ring frame 2. The piece 20 may be a straight plate, or the support piece 20 may be a plate whose rear portion is bent in a J shape or the like.

  The stoppers 22 and the protrusions 24 and 24A may be formed on each support piece 20, but the stoppers 22 and the protrusions 24 and 24A may be formed on any support piece 20. In addition, a stopper 22 that interferes with the rear side of the ring frame 2 is provided at the rear part of the support piece 20, but at the rear part of the ring frame 2 at the rear part of the insertion groove 21 unless there is a particular problem. An interfering stopper 22 can also be provided. Further, instead of the both sides of the protrusion 24 and the protrusion 24 </ b> A, only one side can be a smooth inclined surface 25 that gradually narrows toward the lower support piece 20.

  Further, a protrusion 24A facing the side portion of the ring frame 2 can be provided only at the front portion of the support piece 20, and the protrusion 24 at the center portion can be omitted. Further, the lid body 30 may be detachably fitted to the opened rear portion of the container body 10, or the lid body 30 may be detachably fitted to the front and rear portions of the container body 10 opened. Furthermore, the container body 10 is raised and the front part opened is directed upward, the ring frame 2 of the processing jig 1 is manually inserted into the container body 10 from above, and the ring frame 2 is positioned in the container body 10. It can also be stored.

It is front explanatory drawing which shows typically embodiment of the storage container for processing jigs concerning this invention. It is a plane explanatory view showing typically an embodiment of a storage container for processing jigs concerning the present invention. It is side explanatory drawing which shows typically embodiment of the storage container for processing jigs concerning this invention. It is a perspective explanatory view showing typically the processing jig in the embodiment of the storage container for processing jig concerning the present invention. It is a perspective explanatory view showing typically the hollow ring frame in the embodiment of the storage container for processing jigs concerning the present invention. It is explanatory drawing which shows typically the cover body in embodiment of the storage container for processing jigs concerning this invention. It is a plane explanatory view showing typically the lid in the embodiment of the storage container for processing jigs concerning the present invention. It is side explanatory drawing which shows typically the cover body in embodiment of the storage container for processing jigs concerning this invention. It is principal part explanatory drawing which shows typically embodiment of the storage container for processing jigs concerning this invention. It is principal part explanatory drawing which shows typically 2nd Embodiment of the storage container for processing jigs concerning this invention. It is explanatory drawing which shows typically the relationship between the ring frame in the 2nd Embodiment of the storage container for processing jigs concerning this invention, a support piece, an insertion groove | channel, etc. FIG. It is principal part explanatory drawing which shows typically 3rd Embodiment of the storage container for processing jigs concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Processing jig 2 Ring frame 10 Container main body 14 Side wall 20 Supporting piece 21 Insertion groove 22 Stopper 23 Inclined surface 24 Protrusion 24A Protrusion 25 Inclined surface 30 Lid 31 Protrusion W Semiconductor wafer (substrate)

Claims (2)

A box-shaped container body having front and rear openings, and a pair of support pieces that are formed so as to be opposed to the inner surfaces of both side walls of the container body and horizontally support a ring frame of a processing jig for mounting a semiconductor wafer ; And a lid that removably opens and closes the front opening of the container body, and at least both side walls of the container body and a pair of support pieces are formed of a molding material containing a slidable resin . Storage container
Between the upper front part and the upper rear part of a pair of opposite side walls of the container body, the handle for operation is supported so as to be raised and lowered, and a plurality of pairs of support pieces are arranged at intervals in the vertical direction of the container body, A space between adjacent support pieces is formed in a ring frame insertion groove, and a stopper facing the rear side of the ring frame is provided at substantially the rear part of either the support piece or the insertion groove. The stopper has an inclined surface that regulates the shakiness of the ring frame ,
The lid body is formed in a substantially dish-shaped cross section to give elasticity, and a plurality of linear protrusions that position and clamp the front part of the ring frame are formed in the vertical direction of the center part of the inner surface of the lid body. A bulging portion that is pressed against both sides of the front portion of the ring frame is integrally formed on both inner side portions of the ring frame, and a locking portion that is locked to the outer peripheral surface of the front portion of the container body is formed on the peripheral portion of the lid body. A storage container for a processing jig. At least one of the front part and the substantially central part of the support piece is provided with a protrusion facing the side of the ring frame, and the protrusion has an inclined surface that gradually narrows toward the lower support piece. The storage container for the processing jig according to claim 1 formed .

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