US20070154291A1 - Displaced wafer detection systems - Google Patents
Displaced wafer detection systems Download PDFInfo
- Publication number
- US20070154291A1 US20070154291A1 US11/444,500 US44450006A US2007154291A1 US 20070154291 A1 US20070154291 A1 US 20070154291A1 US 44450006 A US44450006 A US 44450006A US 2007154291 A1 US2007154291 A1 US 2007154291A1
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- United States
- Prior art keywords
- wafers
- transmission robot
- unified pod
- pod
- sensor
- Prior art date
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- Abandoned
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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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67763—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading
- H01L21/67778—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading involving loading and unloading of wafers
- H01L21/67781—Batch transfer of wafers
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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
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67259—Position monitoring, e.g. misposition detection or presence detection
- H01L21/67265—Position monitoring, e.g. misposition detection or presence detection of substrates stored in a container, a magazine, a carrier, a boat or the like
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/402—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position
-
- 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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67763—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading
- H01L21/67766—Mechanical parts of transfer devices
-
- 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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67763—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading
- H01L21/67772—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading involving removal of lid, door, cover
-
- 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
- H01L21/68—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 positioning, orientation or alignment
- H01L21/681—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 positioning, orientation or alignment using optical controlling means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/40—Robotics, robotics mapping to robotics vision
- G05B2219/40562—Position and orientation of end effector, teach probe, track them
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45031—Manufacturing semiconductor wafers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Robotics (AREA)
- Human Computer Interaction (AREA)
- Automation & Control Theory (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Abstract
A displaced wafer detection system comprises a unified pod, a pod opener, a horizontal transmission robot, and a sensor. The unified pod encloses a plurality of wafers in a first position. The pod opener opens the unified pod. The horizontal transmission robot carries the wafers from the unified pod to a second position. When one of the wafers reaches the second position, the sensor detects if any wafer slips during wafer transmission from the unified pod.
Description
- 1. Field of the Invention
- The present invention relates to semiconductor manufacturing techniques, and more particularly to displaced wafer detection systems.
- 2. Description of the Related Art
- A unified pod, such as a front opening unified pod (FOUP) packing 13 or 25 pieces of 12″ wafers, is utilized to transport wafers between fabrication steps and prevents contamination of wafers. When a unified pod is sent to a pod opener, the pod opener automatically opens the door of the unified pod, and the wafers therein are acquired by other mechanisms and sent to various fabrication equipment.
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FIG. 1 is a fab floor plan. When unifiedpod 10 is sent topod opener 20, podopener 20 automatically opens the door of unified pod 10.Horizontal transmission robot 30 comprises robot arms R1 and R2.Horizontal transmission robot 30 utilizes robot arm R1 to carry a wafer lot in a horizontal direction from unified pod 10 to another position. As shown inFIG. 2 , the wafers remain substantially parallel. Normally, all the acquired wafers are intended to substantially reach the same position ofwafer 12 in the floor plan ofFIG. 2 , i.e. the centers of the wafers are intended to lie on substantially the same line. Some wafers, such aswafer 11, however, may fall occasionally, e.g. the center ofwafer 11 does not lie on the same line as other wafers. - When
horizontal transmission robot 30 rotates to an orientation as shown inFIG. 3 , the wafers are transferred fromhorizontal transmission robot 30 tovertical transmission robot 40, wherein the wafers remain parallel, and thewafer 11 is still incorrectly displaced.Vertical transmission robot 40 vertically rotates to make the wafers stand in a vertical orientation. Normally, when the wafers stand in the vertical orientation,transporter 50 is intended to move upward from its original position belowvertical transmission robot 40 to support the wafers still in the vertical orientation, and moves the wafers along a specific track. As shown inFIG. 4 , becausewafer 11 is carried at an incorrect position byvertical transmission robot 40,wafer 11 may fall ontransporter 50 during rotation ofvertical transmission robot 40, which is called a wafer drop. Whiletransporter 50 is moving upward from its original position belowvertical transmission robot 40 to support the wafers, thewafer 11 thereon will cause support of the wafer by thetransporter 50 to fail and even lead to collapse of all the wafers. - An exemplary embodiment of a displaced wafer detection system comprises a unified pod, a pod opener, a horizontal transmission robot, and a sensor. The unified pod encloses a plurality of wafers in a first position. The pod opener opens the unified pod. The horizontal transmission robot carries the wafers from the unified pod to a second position. When one of the wafers has reached the second position, the sensor detects if any wafer slips during wafer transmission from the unified pod.
- An exemplary embodiment of a displaced wafer detection system comprises a unified pod, a pod opener, a horizontal transmission robot, a vertical transmission robot, a transporter, and a sensor. The unified pod encloses a first lot of wafers in a first position. The pod opener opens the unified pod. The horizontal transmission robot carries the wafers from the unified pod. The vertical transmission robot, when in a first orientation, acquires the wafers and then vertically rotates to a second orientation. The transporter moves upward to support the wafers in a vertical orientation when the vertical transmission robot is in the second orientation. The sensor detects if any wafers have dropped from the vertical transmission robot before the wafers are supported by the transporter.
- A detailed description is given in the following embodiments with reference to the accompanying drawings.
- The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
-
FIG. 1 is a schematic diagram of a fab; -
FIG. 2 is a schematic view of a horizontal transmission robot acquiring a wafer lot; -
FIG. 3 is a schematic view of a vertical transmission robot acquiring a wafer lot; -
FIG. 4 is a schematic diagram of a wafer dropping from the vertical transmission robot; -
FIG. 5 is a schematic diagram of a displaced wafer detection system; -
FIG. 6 is a schematic diagram of the arrangement of transmitters and receivers of a sensor; -
FIG. 7 is a schematic diagram of the arrangement of transmitters and receivers of another sensor; -
FIG. 8 is a side view of a sensor in a first direction; -
FIG. 9 is a side view of a sensor in a second direction; and -
FIG. 10 is a side view of an exemplary sensor. - The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.
- In a floor plan of
fab 100A inFIG. 5 ,sensor 60 is disposed betweenhorizontal transmission robot 30 andpod opener 20, andsensor 70 is disposed betweenvertical transmission robot 40 andtransporter 50. Control unit 1 which may be integrated in or coupled to a manufacturing execution system (MES) dominatessensors wafers 13. When unifiedpod 10 is sent topod opener 20, podopener 20 automatically opens the door of unifiedpod 10, whereinwafers 13 are substantially parallel and in a first position. The centers ofwafers 13 in the opened unifiedpod 10 lie substantially on a first line. -
Horizontal transmission robot 30 comprises robot arms R1 and R2.Horizontal transmission robot 30 utilizes robot arm R1 to horizontally carrywafers 13 from unified pod 10 to a second position, wherein wafers 13 remain substantially parallel. When no wafer slips while being carried from unifiedpod 10, the centers ofwafers 13 reach and lie on a second line. When one of the wafers has reached the second position,sensor 60 detects if any wafers slipped during transport ofwafers 13 from unifiedpod 10 to the second position byhorizontal transmission robot 30.Sensor 60 is disposed between horizontal transmission robot and the pod opener whilewafers 13 are carried byhorizontal transmission robot 30 from unified pod 10 to the second position.Sensor 60 may be fixed to podopener 20 orhorizontal transmission robot 30, or even to another movable or stationary equipment or object. For example,sensor 60 is fixed to a first surface ofpod opener 20, facinghorizontal transmission robot 30 whilehorizontal transmission robot 30 is carryingwafers 13 from unifiedpod 10. -
Sensor 60 comprises at least one transmitter dispatching a signal and one receiver accepting the signal. The transmitter and the receiver may be disposed on a third line parallel to the second line, whereby detection signals are transmitted from the transmitter to the receiver along the third line. The path of the detection signals lies substantially on the same plane as the first and the second lines. Control unit 1 may direct the transmitter to deliver detection signals whenhorizontal transmission robot 30 has deliveredwafers 13 fromunified pod 10 to the second position. Control unit 1 determines that at least one ofwafers 13 slips when one ofwafers 13 has reached the second position when the receiver does not receive the delivered detection signals. Control unit 1 stopshorizontal transmission robot 30. The detection signals are preferably implemented by infrared or other means that does not affect the wafers. -
Sensor 60 may also be implemented by coupling of transmitters and receivers. As shown inFIG. 6 ,transmitters 61 transmitdetection signals 63 toreceivers 62. Iftransmitters 61 andreceivers 62 are arranged horizontally to align all wafers,sensor 60 can further identify and report a sliding wafer to control unit 1. As shown inFIG. 10 , a side view of an example ofsensor 60 is provided. The closer the path of detection signals 63 towafers 13, the finer is the wafer sliding detection ability ofsensor 60. - When
horizontal transmission robot 30 rotates to an orientation as shown inFIG. 3 ,wafers 13 are transferred fromhorizontal transmission robot 30 tovertical transmission robot 40.Vertical transmission robot 40 acquireswafers 13 when in a first orientation, and then vertically rotates to a second orientation to makewafers 13 stand in a vertical orientation. - Normally, when
vertical transmission robot 40 is in thesecond orientation transporter 50 moves upward from its original position belowvertical transmission robot 40 to supportwafers 13 in a vertical orientation, and moveswafers 13 along a specific track.Transporter 50 can carry two lots of wafers, wherein wafers of a second lot are inserted between wafers of a first lot.Sensor 70 detects if any wafers dropped fromvertical transmission robot 40 during the period from the beginning of rotation ofvertical transmission robot 40 to support ofwafers 13 bytransporter 50. -
Sensor 70 is disposed betweenvertical transmission robot 40 andtransporter 50 whenvertical transmission robot 40 is in the second orientation, andwafers 13 have not been supported bytransporter 50.Sensor 70 may be fixed totransporter 50 orvertical transmission robot 40, or even to another movable or stationary equipment or object. -
Wafers 13 acquired byvertical transmission robot 40 are substantially parallel. The centers ofwafers 13 substantially move along a vertical plane whilevertical transmission robot 40 rotates from the first orientation to the second orientation.Sensor 70 comprises at least one transmitter dispatching a signal and one receiver accepting the signal. The transmitter and the receiver may be disposed on a fourth line substantially parallel to or lying on the vertical plane. - Control unit 1 determines that at least one of the
wafers 13 drops if the signal from the transmitter to the receiver is interrupted during a period sincewafers 13 are acquired byvertical transmission robot 40 untilwafers 13 are supported bytransporter 50. Control unit 1 may accordingly stoptransporter 50 when at least a wafer drops. -
Sensor 70 may also be implemented by coupling of transmitter and receiver. In a floor plan ofsensor 70 as shown inFIG. 7 ,transmitters 71 transmitdetection signals 73 toreceivers 72. Iftransmitters 71 andreceivers 72 align every wafer,sensor 70 can further identify and report a dropping wafer to control unit 1. As shown inFIG. 8 , a side view of anexemplary sensor 70 is provided.Wafers 14 are wafers previously acquired bytransporter 50.Wafers transporter 50. - A side view of another
exemplary sensor 70 is provided inFIG. 9 .FIGS. 8 and 9 are side views of examples ofsensor 70 in different directions. Under a condition whenwafers 14 have been disposed ontransporter 50, control unit 1 determines that at least one of thewafers 13 has dropped if the detection signals fromtransmitter 71 toreceiver 72 are interrupted during a period sincevertical transmission robot 40 acquireswafers 13 untilwafers 13 andwafers 14 are interleaved. Control unit 1 may accordingly stoptransporter 50. - Control unit 1 detects wafer sliding or dropping
events utilizing sensors - While the invention has been described by way of example and in terms of the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Claims (17)
1. A displaced wafer detection system, comprising:
a unified pod enclosing a plurality of wafers in a first position;
a pod opener opening the unified pod;
a horizontal transmission robot carrying the wafers from the unified pod to a second position; and
a sensor, when one of the wafers has reached the second position, detecting if any wafer has slipped during wafer transmission from the unified pod.
2. The system as claimed in claim 1 , wherein the sensor is disposed between the horizontal transmission robot and the pod opener while the wafers are carried by the horizontal transmission robot from the unified pod to the second position.
3. The system as claimed in claim 2 , wherein the sensor is fixed to a first surface of the pod opener, and, when the horizontal transmission robot carrys the wafers from the unified pod, the first surface faces the horizontal transmission robot.
4. The system as claimed in claim 2 , wherein the sensor comprises at least one transmitter dispatching a signal and one receiver accepting the signal, the wafers carried by the horizontal transmission robot are substantially parallel, when no wafer slips while being carried from the unified pod, the centers of the wafers reach and lie on a second line, the transmitter and the receiver are both disposed on a third line along which the signal is transmitted from the transmitter to the receiver, and the third line is parallel to the second line.
5. The system as claimed in claim 4 , wherein the wafers when being in the opened unified pod have the centers thereof substantially lie on a first line, and the signal travels along a path on the same plane as the first and second lines.
6. The system as claimed in claim 4 , further comprising a control unit determining that at least one of the wafers slips when one of the wafers has reached the second position while the receiver does not receive the signal.
7. The system as claimed in claim 4 , wherein the control unit stops the horizontal transmission robot when at least one of the wafers slips.
8. A displaced wafer detection system, comprising
a unified pod enclosing a first lot of wafers in a first position;
a pod opener opening the unified pod;
a horizontal transmission robot carrying the wafers from the unified pod;
a vertical transmission robot, when in a first orientation, acquiring the wafers and then vertically rotating the wafers to a second orientation;
a transporter moving upward to support the wafers in a vertical orientation when the vertical transmission robot is in the second orientation; and
a sensor detecting if any wafer drops from the vertical transmission robot before the wafers are supported by the transporter.
9. The system as claimed in claim 8 , wherein the sensor is disposed between the vertical transmission robot and the transporter when the vertical transmission robot is in the second orientation, and the transporter has not supported the wafers.
10. The system as claimed in claim 9 , wherein the wafers acquired by the vertical transmission robot are substantially parallel, the centers of the wafers substantially move along a vertical plane while the vertical transmission robot rotates from the first orientation to the second orientation, the sensor comprises a transmitter dispatching a signal and a receiver accepting the signal, and the transmitter and the receiver are disposed on a line substantially parallel to the vertical plane.
11. The system as claimed in claim 10 , wherein the transmitter and the receiver are substantially disposed on the vertical plane.
12. The system as claimed in claim 10 , further comprising a control unit determining that at least one of the wafers has dropped if the signal from the transmitter to the receiver is interrupted during a period since the wafers are acquired by the vertical transmission robot until the wafers are supported by the transporter.
13. The system as claimed in claim 12 , wherein the control unit stops the transporter when at least one of the wafers drops.
14. The system as claimed in claim 12 , wherein the transporter has had a second lot of wafers disposed thereon, and the control unit determines that at least one of the wafers has dropped if the signal from the transmitter to the receiver is interrupted before the first lot of wafers and the second lot of wafers are interleaved.
15. The system as claimed in claim 14 , wherein the control unit stops the transporter when at least one of the wafers drops.
16. The system as claimed in claim 8 , wherein the horizontal transmission robot carries the wafers from the unified pod to a second position; further comprising:
a second sensor, when one of the wafers has reached the second position, detecting if any wafer has slipped during wafer transport from the unified pod.
17. The system as claimed in claim 16 , wherein the sensor is disposed between the horizontal transmission robot and the pod opener while the wafers are carried by the horizontal transmission robot from the unified pod to a second position.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW094147624A TW200725785A (en) | 2005-12-30 | 2005-12-30 | Displaced wafer detection systems |
TW94147624 | 2005-12-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070154291A1 true US20070154291A1 (en) | 2007-07-05 |
Family
ID=38224588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/444,500 Abandoned US20070154291A1 (en) | 2005-12-30 | 2006-06-01 | Displaced wafer detection systems |
Country Status (3)
Country | Link |
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US (1) | US20070154291A1 (en) |
KR (1) | KR100780085B1 (en) |
TW (1) | TW200725785A (en) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4987407A (en) * | 1988-04-22 | 1991-01-22 | Asq. Boats, Inc. | Wafer interleaving with electro-optical safety features |
US5206627A (en) * | 1990-11-21 | 1993-04-27 | Tokyo Electron Sagami Limited | Substrate detecting system with edge detection, such as wafer or base material of semiconductor device or LCD |
US5604443A (en) * | 1994-05-23 | 1997-02-18 | Tokyo Electron Limited | Probe test apparatus |
US5706201A (en) * | 1996-05-07 | 1998-01-06 | Fortrend Engineering Corporation | Software to determine the position of the center of a wafer |
US5870488A (en) * | 1996-05-07 | 1999-02-09 | Fortrend Engineering Corporation | Method and apparatus for prealigning wafers in a wafer sorting system |
US5971696A (en) * | 1996-10-01 | 1999-10-26 | Tokyo Electron Limited | System for carrying-in of cassette for substrates to be processed |
US6224312B1 (en) * | 1996-11-18 | 2001-05-01 | Applied Materials, Inc. | Optimal trajectory robot motion |
US6368040B1 (en) * | 1998-02-18 | 2002-04-09 | Tokyo Electron Limited | Apparatus for and method of transporting substrates to be processed |
US20040213648A1 (en) * | 2003-04-14 | 2004-10-28 | Hofmeister Christopher A | Substrate cassette mapper |
US20070071581A1 (en) * | 2005-07-11 | 2007-03-29 | Ulysses Gilchrist | Process apparatus with on-the-fly workpiece centering |
US7219676B2 (en) * | 2002-09-03 | 2007-05-22 | Samsung Electronics Co., Ltd. | Substrate detecting apparatus |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100252041B1 (en) * | 1997-10-30 | 2000-04-15 | 윤종용 | Apparatus for detecting loading status of wafer in carrier and method therefor |
JP3590517B2 (en) | 1998-01-21 | 2004-11-17 | 株式会社 日立インダストリイズ | Wafer detection device in cassette |
JP2001060615A (en) | 1999-08-20 | 2001-03-06 | Rorze Corp | Wafer recognition device in wafer transfer device |
JP4246420B2 (en) * | 2000-09-14 | 2009-04-02 | 平田機工株式会社 | FOUP opener and FOUP opener mapping method |
KR20020032702A (en) * | 2000-10-26 | 2002-05-04 | 윤종용 | Apparatus for holding in check drop of wafer adapted to semiconductor fabrication equipment |
KR20050049988A (en) * | 2003-11-24 | 2005-05-27 | 삼성전자주식회사 | Apparatus for detecting a wafer in a transfer chamber of semiconductor fabrication |
-
2005
- 2005-12-30 TW TW094147624A patent/TW200725785A/en unknown
-
2006
- 2006-06-01 US US11/444,500 patent/US20070154291A1/en not_active Abandoned
- 2006-06-21 KR KR1020060055841A patent/KR100780085B1/en not_active IP Right Cessation
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4987407A (en) * | 1988-04-22 | 1991-01-22 | Asq. Boats, Inc. | Wafer interleaving with electro-optical safety features |
US5206627A (en) * | 1990-11-21 | 1993-04-27 | Tokyo Electron Sagami Limited | Substrate detecting system with edge detection, such as wafer or base material of semiconductor device or LCD |
US5604443A (en) * | 1994-05-23 | 1997-02-18 | Tokyo Electron Limited | Probe test apparatus |
US5706201A (en) * | 1996-05-07 | 1998-01-06 | Fortrend Engineering Corporation | Software to determine the position of the center of a wafer |
US5870488A (en) * | 1996-05-07 | 1999-02-09 | Fortrend Engineering Corporation | Method and apparatus for prealigning wafers in a wafer sorting system |
US5971696A (en) * | 1996-10-01 | 1999-10-26 | Tokyo Electron Limited | System for carrying-in of cassette for substrates to be processed |
US6224312B1 (en) * | 1996-11-18 | 2001-05-01 | Applied Materials, Inc. | Optimal trajectory robot motion |
US6368040B1 (en) * | 1998-02-18 | 2002-04-09 | Tokyo Electron Limited | Apparatus for and method of transporting substrates to be processed |
US7219676B2 (en) * | 2002-09-03 | 2007-05-22 | Samsung Electronics Co., Ltd. | Substrate detecting apparatus |
US20040213648A1 (en) * | 2003-04-14 | 2004-10-28 | Hofmeister Christopher A | Substrate cassette mapper |
US20070071581A1 (en) * | 2005-07-11 | 2007-03-29 | Ulysses Gilchrist | Process apparatus with on-the-fly workpiece centering |
Also Published As
Publication number | Publication date |
---|---|
TW200725785A (en) | 2007-07-01 |
KR20070072329A (en) | 2007-07-04 |
KR100780085B1 (en) | 2007-11-29 |
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Owner name: POWERCHIP SEMICONDUCTOR CORP., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, YUAN-HSING;HUANG, CHANG-LIANG;LEE, CHIUNG-CHUN;AND OTHERS;REEL/FRAME:017949/0756 Effective date: 20060417 |
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