Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
  • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
• • 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
  • H01L21/67373—Closed carriers characterised by locking systems

Definitions

• Transport modules for such wafers by way of developing industry standards, utilize a front opening door that drops downwardly from the module. Referring to FIG. 2 such a front opening enclosure is shown. Such an enclosure has analogous components within the container portion 34 without a separate removable carrier .
• enclosures as described above are utilized in relatively clean environments, such enclosures will over time accumulate contaminants on the enclosure, in the enclosure, and in the interior of the door enclosure ultimately requiring cleaning. Such contaminants may be created by the rubbing of parts such as the operation of the door latching mechanism as described above, by the wafers being loaded and unloaded on the wafer shelves, and by the door being engaged and disengaged with the container portion.
• the numerous parts in conventional latching mechanisms, the difficulty of disassembly of the doors, and the use of metallic fasteners make the cleaning of such doors difficult. Easily disassembleable doors, with easily disassembleable latching mechanisms, and with minimal moving parts are highly desirable.
• latching mechanisms were enclosed within door enclosures. Such enclosures generally will isolate and contain any particle generation created by the latching mechanism. Such particles can accumulate and eventually need removal and cleaning.
• wafer carriers including wafer containers are cleaned with water solutions and dried with pressurized air or gases. Such cleaning is critical in keeping yields up.
• the doors need to be disassembled or at least have covers removed exposing the latching mechanisms. This process is labor intensive and tedious. To the extent the cover is not removed, access and cleaning of the interior is difficult. Also if washing is accomplished with the latching mechanism enclosed, drying of the enclosed latching mechanism is problematic.
• the rotatable cammed members are particularly useful in conforming with the industry standards for robotically opening the 300mm carrier doors. See SEMI E62, Provisional Specification for FIMS Door, available from the Semiconductor Equipment Manufacturers Institute, Mountain View, California, and attached as an Appendix. These standard requires the use of two parallel spaced tools, termed "latch keys" which are robotically inserted into a door. Both tools are simultaneously rotated clockwise to unlatch the door. Consistent with these standards, conventional front opening transport modules or shippers for 300mm wafers utilize two separate latching mechanisms, one for each side of the door.
• Such mechanisms that are also manually openable, utilize handles that also turn the internal cammed member.
• Traditional 300mm shippers that have such manual handles require each of two such handles to be separately rotated and then the door is manually removed by pulling on the manual handles.
• Such separate rotational movement by each hand of an operator in non symmetrical, awkward, and generally counterintuitive. Additionally it is difficult to ascertain if each rotational handle has been turned the full necessary rotation for full latching or unlatching.
• cammed members function in wafer carrier doors, they have several deficiencies.
• the rotatable cammed member can be difficult to design and fabricate and they typically require relatively large circular cammed members for reasonable mechanical advantage. Reducing the size of such cammed members reduces the mechanical advantage.
• cammed members do not typically have smooth operation when translating the rotational motion to a linear motion that is irregular as is appropriate in latching and unlatching applications. Particularly, when manually rotating such rotating cammed members, false stops may occur before the latch portions are fully extended or retracted.
• cammed rotatable members are inimical to providing a supplemental non-rotational manual grasping latching/unlatching handle.
• Providing rotating supplemental manual handles are known.
• handles that rotate provide a very insecure handling means which can lead to non- smooth cumbersome manual placement and removal of doors from the door openings of the enclosure portions.
• Such non-smooth operation can lead to inadvertent contact between the door and enclosure at the door opening causing scrapping with particle generation, disruption of seating of the wafers, particle launching from the carrier, or other undesirable consequences.
• a wafer door with a latching mechanism would ideally have grasping handles that manually operate the latching mechanism that are non-rotating.
• a manually operated door that is smoothly, easily and intuitively operated and that has a simple mechanical design is needed. Moreover, such a door is needed that complies with the industry standards for robotic operation of the door.
• a wafer container has an open front defined by a door receiving frame and a door sized for the door receiving frame.
• the door receiving frame has slots on opposite sides and the door and utilizes two latching linkages that extend, lift, lower and retract two latching portions from the edge portion of each opposite side of the door and into and out of latch receptacles on the door receiving frame.
• each latching mechanism utilizes a sliding plate with a handle connected thereto and exposed on the front of the door.
• the sliding plate has a pair of lifting linkages cooperating with a pair of latching linkages.
• the sliding plate includes a rack portion engaged with a pinion.
• the pinion is accessible from the front of the door by a latch key whereby the mechanism can be operated robotically.
• a latch mechanism is provided with a non- rotating grasping handle that provides a secondary means for operating the latch. In a preferred embodiment the entire latching mechanism is exposed on the front of the door.
• An object and advantage of preferred embodiments of the invention is that a non-rotational means is provided to operate the latching mechanism.
• An object and advantage of preferred embodiments is that the latching mechanism is exposed on the front of the front door facilitating cleaning and drying of the mechanism, visually assuring proper operation, and generally providing easy access to the mechanism if maintenance is needed.
• An object and advantage of preferred embodiments of the invention is that there are no door enclosures. This minimizes the number of components, simplifies assembly, and reduces cost
• An object and advantage of preferred embodiments of the invention is that the manual motion to latch the door is intuitive, that is, moving the handles outwardly toward the periphery of the door extends the latch portions. Moving the handles inwardly retracts the latch portions.
• a further object and advantage of preferred embodiments of the invention is that the manually operable latch mechanism of the door is also robotically operable.
• a feature and advantage of preferred embodiments of the invention is that the latching mechanism operates smoothly particularly when compared to mechanisms utilizing rotating cammed members.
• An advantage and feature of the invention is that the latching mechanism utilized is comprised of a minimal member of component parts that are mechanically simply yet provide an effective and reliable latching action.
• Another feature and advantage of the invention is that the mechanism is positioned in the interior of the door thereby minimizing the generation and dispersal of particles by the door mechanism.
• FIG. 1 is a perspective view of a prior art SMIF pod.
• FIG. 2 is a perspective view of a prior art transport module.
• FIG. 3 is a perspective view of a prior art transport module with handles for manual operation and openings for robotic latch keys .
• FIG. 4 is a perspective view of a wafer container in accordance with the invention herein.
• FIG. 5 is an exploded view of the front sides of components of the door of a wafer container in accordance with the invention herein .
• FIG. 6 is an exploded rear view of a latch mechanism in accordance with the invention herein.
• FIG. 7 is an elevational view of a front of an assembled door in accordance with the invention herein.
• FIG. 8 is a cross sectional view of a latching mechanism with the latching portion retracted in accordance with the invention herein .
• FIG. 9 is a cross sectional view of a latching mechanism with the latching portion extended in accordance with the invention herein.
• FIGS. 10a and 10b are a perspective views of the front and back or a door of a wafer carrier in accordance with the invention. 10
• FIGS. 1 and 2 show a bottom opening SMIF pods 20 and a front opening transport module 30 respectively for which the invention is highly suitable.
• Each sealable enclosure has a container portion 34 and a cooperating door 36.
• the SMIF pod 20 also has a separate wafer carrier 38 which is a H-bar carrier, well known in the art, which seats on the top surface 40 of the door 36.
• Each container portion 34 and each enclosure has a top side 46, a front side 48, and a bottom side 50.
• the bottom side 50 is open for receiving the wafer carrier 38 and the door 36.
• the doors have an inwardly facing side 52, an outwardly facing side 53, and a periphery 55 comprise an enclosure 56 with an open interior 58 which contains a latching mechanism 60, a portion of which is shown in FIGS. 1 and 2.
• the latching mechanism includes a latching portion 62 which is extendable out of slots 66 to engage into latching portion receivers 68 located in the door frame portion 74 of the container portion 34.
• prior art wafer container which illustrates handles 80 which may be swung outwardly to facilitate rotation of same. Said handles are coupled to a rotatable cammed members in each respective door enclosure.
• a wafer container 90 incorporating the invention is illustrated and generally comprises a container portion 92 and a cooperating door 94.
• the container portion has 11
• the container portion generally has an open front 106, a closed top 108, a closed left side 110, a closed back side 112, a closed right side 114, and a closed bottom 116.
• the container will typically have an equipment interfaces, not shown, on the outside of the closed bottom.
• the door 94 seats into and engages with a door receiving frame 120 which may or may not be integral with the shell 124.
• the door frame 120 has two pairs of opposing frame members, a vertical pair 130, 132 and a horizontal pair 136, 138.
• the vertical frame members each have a pair of receivers 150, configured as apertures or slots which are utilized in engaging and latching the door to the container portion.
• the door may have an active wafer regaining means such as disclosed in U.S. Patent No. 5,915,562 which is incorporated by reference herein, or a passive means as is well known in the art.
• the door may utilize a front cover 160, configured as a panel, which is suitably secured, such as by spring members as disclosed in serial no. 08/904,660 which is incorporated herein by reference, and a housing 162 which form an enclosure 164.
• Two actuation portions configured as manual handles 170, 172 extend through apertures 174, 176 in the front cover.
• Latch key holes 180, 182 provide robotic access to additional actuation portions configured as key receivers.
• Latching portions 184, 185 extend and retract through apertures 186, 187 in the door periphery 188. 12
• the door enclosure 164 has two compartments 190, 192 for housing two different mirror image latch mechanisms 200, 202.
• the door has individual mechanism covers 203, 204.
• the first or left side latch mechanism 202 is in an exploded view with the second or right side latch mechanism 200 assembled.
• FIG. 6 shows the opposite or inwardly facing view of the exploded left side latch mechanism components.
• Each latch mechanism has generally a actuation portion 205, a motion translation portion 206, and a latching portion 207.
• each mechanism is comprised of a sliding actuating portion 210 which includes a respective manual handle 170, 172, connecting portion 218, a pair of connecting links configured as a rack 224, and a central aperture 225.
• the lifting linkages include a cam surface 226 or second lifting portion configured as a ramp, lateral guide slots 232, 234, a central guide slot 236, and spacers 240, 242 configured as posts.
• the lifting linkages 220, 222 cooperate with latching arms 250, 252 which include the latching portions 184, 185, and guide members 258, 259 configured as guide pins extending from the linkages .
• the guide pins ride in and are captured by the lateral guide slots 232, 234.
• the latching arms also have stop members 268 configured as numbs which extend from the front face 274 of the latching arms.
• the back side of the latching arms have a first lifting portion 276 configured as a cam follower with a ramp engagement surface 277 which engages the second lifting portion on the lifting linkage to provide the inward- outward motion of the latching portion.
• the cover pieces 203, 204 retain the components in place and may be 13
• a gear member 290 configured as a pinion is rotatably seated on a post 294.
• the gear member engages the rack on the connecting portion 218 to horizontally move same when the pinion is rotated.
• the gear member has a key receiver configured as a latch key slot 298 for receiving a robotic latch key 300.
• the key receiver constitutes a first actuation portion and the manual handle constitutes a second actuation portion which both actuate the motion translation portion comprised of the rack and pinion mechanism and the connecting linkages.
• Alternate motion translation portions may be used and still be within the scope of particular aspects of the invention.
• the latch mechanism operates analogously to the latch mechanism of FIGS. 17, 18a, 19a, 19b, 20, 21, of U.S. application serial number 08/891,645, which is incorporated herein by reference, although a rotatable cammed member is not utilized. Rather the sliding handle portion with the attached lifting linkages are utilized to laterally move said linkages.
• the latching are also is engaged with the rotatable cammed member. In the instant case the latching arm is captured by the lifting linkage and the up down motion is controlled and limited by the configuration of structure on the covers 203, 204.
• the individual parts of the door mechanism 100 may be suitably formed of carbon fiber polycarbonate to provide a static dissipative characteristic.
• the enclosure may be formed of polycarbonate.
• the latching components may be formed of suitable plastics such as nylons or PEEK.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Condensed Matter Physics & Semiconductors (AREA)
• General Physics & Mathematics (AREA)
• Manufacturing & Machinery (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Power Engineering (AREA)
• Mechanical Engineering (AREA)
• Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
• Packaging Frangible Articles (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=22501466

Family Applications (1)

Country Status (8)

Families Citing this family (8)

Citations (2)

Family Cites Families (4)

• 2000
  • 2000-07-06 CN CNB008115826A patent/CN1169696C/zh not_active Expired - Lifetime
  • 2000-07-06 WO PCT/US2000/018511 patent/WO2001004022A1/en active Application Filing
  • 2000-07-06 AU AU63419/00A patent/AU6341900A/en not_active Abandoned
  • 2000-07-06 JP JP2001509652A patent/JP4549595B2/ja not_active Expired - Lifetime
  • 2000-07-06 DE DE10084776T patent/DE10084776T5/de not_active Withdrawn
  • 2000-07-06 EP EP00950296A patent/EP1218264A4/de not_active Withdrawn
  • 2000-07-06 KR KR1020027000227A patent/KR100747041B1/ko active IP Right Grant
  • 2000-07-07 MY MYPI20003119A patent/MY128807A/en unknown

Patent Citations (2)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events