# US 12,009,242 B2 · Wafer transport container > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,009,242 B2 - Document ID: US12009242B2 - Status: Granted - Kind: B2 - Application number: 17/446,404 - Filed: 2021-08-30 - Published: 2023-03-02 - Granted: 2024-06-11 - Earliest claimed: 2021-08-30 - Assignees: Taiwan Semiconductor Manufacturing Company, Ltd. - Applicants: Taiwan Semiconductor Manufacturing Company Limited - Inventors: Jyh-Shiou Hsu; Jeng-Shin Ma; Cheng-Lung Wu - Web page: https://patentgrep.com/patent/US12009242B2 ## CPC - H10P 72/3406: {involving removal of lid, door or cover} - B65G 47/90: Devices for picking-up and depositing articles or materials - H10P 72/1914: {characterised by locking systems} - H10P 72/1916: {characterised by sealing arrangements} - H10P 72/1921: {characterised by substrate supports} - H10P 72/1922: {characterised by the construction of the closed carrier} - H10P 72/1924: {characterised by atmosphere control} - H10P 72/3402: {Mechanical parts of transfer devices} - H10P: GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10 - B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D) ## Abstract A wafer transport carrier includes various components to provide improved air sealing to reduce air leakage into the wafer transport carrier. The wafer transport carrier may include a housing having a hollow shell that contains a vacuum or an inert gas to minimize and/or prevent humidity and oxygen ingress into the wafer transport carrier, a wafer rack that is integrated into the shell of the housing to minimize and/or prevent air leakage around the wafer rack, and/or an enhanced magnet-based door latch to provide air sealing around the full perimeter of the opening of the housing. These components and/or additional components described herein may reduce and/or prevent debris, moisture, and/or other types of contamination from the semiconductor fabrication facility from entering the wafer transport carrier and causing wafer defects and/or device failures. ## Claims ### Claim 1 A wafer transport container, comprising: a housing, comprising: a shell forming an internal space that is configured to hold a plurality of wafers; an opening configured to provide access to the internal space; and a first pair of magnets and a second pair of magnets that are positioned around a perimeter of the opening of the housing; and a door configured to form an air-tight seal around the perimeter of the opening, comprising: a third pair of magnets and a fourth pair of magnets that are positioned around a perimeter of the door, wherein the third pair of magnets is configured to interface with the first pair of magnets, and wherein the fourth pair of magnets is configured to interface with the second pair of magnets; a first latch; a second latch; a first support member connected to the first latch and a magnet of the third pair of magnets; and a second support member connected to the second latch and the magnet. ### Claim 2 (depends on 1) The wafer transport container of claim 1, wherein the first pair of magnets comprises: a first magnet at a first side of the housing; and a second magnet at a second side of the housing opposing the first side of the housing; and wherein the second pair of magnets comprises: a third magnet at a third side of the housing, and a fourth magnet at a fourth side of the housing opposing the third side of the housing. ### Claim 3 (depends on 2) The wafer transport container of claim 2, wherein the magnet is a fifth magnet at a first side of the door and configured to interface with the first magnet; wherein the third pair of magnets comprises a sixth magnet, at a second side of the door, configured to interface with the second magnet; and wherein the fourth pair of magnets comprises: a seventh magnet, at a third side of the door, configured to interface with the third magnet, and an eighth magnet, at a fourth side of the door opposing the third side of the door, configured to interface with the fourth magnet. ### Claim 4 (depends on 1) The wafer transport container of claim 1, wherein the shell is hollow and includes a cavity to provide temperature isolation and humidity isolation for the internal space. ### Claim 5 (depends on 4) The wafer transport container of claim 4, wherein the cavity is filled with an inert gas. ### Claim 6 (depends on 4) The wafer transport container of claim 4, wherein a vacuum is formed in the cavity. ### Claim 7 (depends on 1) The wafer transport container of claim 1, wherein the housing further comprises: a gasket around the perimeter of the opening, wherein the door is configured to form the air-tight seal against the gasket. ### Claim 8 (depends on 7) The wafer transport container of claim 7, wherein the first latch and the second latch are configured to selectively: move the third pair of magnets and the fourth pair of magnets to an extended configuration in which the door is latched onto the housing, and move the third pair of magnets and the fourth pair of magnets to a retracted configuration in which the door is unlatched from the housing. ### Claim 9 (depends on 8) The wafer transport container of claim 8, wherein the door further comprises: a first plurality of support members connected to the first latch, wherein the first plurality of support members comprises the first support member; and a second plurality of support members connected to the second latch, wherein the second plurality of support members comprises the second support member. ### Claim 10 (depends on 9) The wafer transport container of claim 9, wherein the magnet is a first magnet; wherein a third support member of the first plurality of support members is connected to a second magnet of the third pair of magnets; wherein a fourth support member of the first plurality of support members is connected to a third magnet of the fourth pair of magnets; wherein a fifth support member of the second plurality of support members is connected to the second magnet; and wherein a sixth support member of the second plurality of support members is connected to a fourth magnet of the fourth pair of magnets. ### Claim 11 (depends on 1) The wafer transport container of claim 1, wherein the housing further comprises: a wafer rack configured to support the plurality of wafers, wherein the shell and the wafer rack are an integrated one-piece component. ### Claim 12 A door of a wafer transport container, comprising: a first pair of magnets configured to interface with a third pair of magnets of a housing of the wafer transport container; a second pair of magnets configured to interface with a fourth pair of magnets of the housing, wherein the first pair of magnets and the second pair of magnets are positioned around a perimeter of the door; a first latch; a second latch; a first support member connected to the first latch and a magnet of the first pair of magnets; and a second support member connected to the second latch and the magnet. ### Claim 13 (depends on 12) The door of claim 12, wherein the magnet is a first magnet at a first side of the door; wherein the first pair of magnets comprises a second magnet at a second side of the door opposing the first side of the door; and wherein the second pair of magnets comprises: a third magnet at a third side of the door, and a fourth magnet at a fourth side of the door opposing the third side of the door. ### Claim 14 (depends on 12) The door of claim 12, wherein the first latch and the second latch are configured to selectively: move the first pair of magnets and the second pair of magnets to an extended configuration in which the door is latched onto the housing, and move the first pair of magnets and the second pair of magnets to a retracted configuration in which the door is unlatched from the housing. ### Claim 15 (depends on 14) The door of claim 14, further comprising: a first plurality of support members connected to the first latch, wherein the first plurality of support members comprises the first support member; and a second plurality of support members connected to the second latch, wherein the second plurality of support members comprises the second support member. ### Claim 16 (depends on 15) The door of claim 15, wherein a third support member of the first plurality of support members is connected to a second magnet of the first pair of magnets; wherein a fourth support member of the first plurality of support members is connected to a third magnet of the second pair of magnets; wherein a fifth support member of the second plurality of support members is connected to the second magnet; and wherein a sixth support member of the second plurality of support members is connected to a fourth magnet of the second pair of magnets. ### Claim 17 (depends on 16) The door of claim 16, wherein a seventh support member of the first plurality of support members is connected to the third magnet. ### Claim 18 (depends on 16) The door of claim 16, wherein a seventh support member of the first plurality of support members is connected to the first magnet and the third magnet. ### Claim 19 (depends on 14) The door of claim 14, wherein the first latch and the second latch are configured to move the first pair of magnets and the second pair of magnets in synchronization. ### Claim 20 A container, comprising: a housing, comprising: a shell; an opening; and a first magnet, a second magnet, a third magnet, and a fourth magnet that are positioned around a perimeter of the opening; and a door configured to form an air-tight seal around the perimeter of the opening, comprising: a fifth magnet and a sixth magnet that are positioned around a perimeter of the door, wherein the fifth magnet is configured to interface with the first magnet, and wherein the sixth magnet is configured to interface with the second magnet; a first latch; a second latch; a first support member connected to the first latch and the fifth magnet; and a second support member connected to the second latch and the fifth magnet.