Patents by Inventor Keith W. Melcher
Keith W. Melcher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7598507Abstract: The present invention provides, in one embodiment, a method (100) of manufacturing a semiconductor device. A conventionally formed reticle is positioned over a resist located on a substrate (110). A radiation path through the reticle and a window assembly located between a radiation source and resist (120), is considered. It is determined whether or not the radiation would expose a predefined blocking area of the resist within the exposure zone (130). If the radiation would expose a blocking area, then the window assembly is configured to prevent radiation from exposing the blocking area in the exposure zone (140). Other embodiments include a window assembly (300) and system (400) to facilitate manufacturing of the semiconductor device according to the method (100).Type: GrantFiled: June 11, 2003Date of Patent: October 6, 2009Assignee: Texas Instruments IncorporatedInventors: Basab Chatterjee, Richard L. Guldi, Keith W. Melcher
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Patent number: 6848066Abstract: A photolithography system includes a photolithography tool 32 that includes a stage upon which a semiconductor wafer is mounted. The tool is operable to move the stage to automatically focus a pre-determined image on a surface of the semiconductor wafer. The tool is further operable to log movements of the stage. The system also includes an automation host computer 36 operable to poll the photolithography tool 32 to obtain data reflecting the logged movements of the stage. The automation host computer 36 is further operable to analyze the data and compare the data to pre-determined error conditions. The host computer also takes a pre-determined action, including sending an electronic mail message to the personal computers 38 of relevant line personnel, in the event the data meets the pre-determined error conditions.Type: GrantFiled: August 4, 2003Date of Patent: January 25, 2005Assignee: Texas Instruments IncorporatedInventors: Chris D. Atkinson, Keith W. Melcher, Richard L. Guldi
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Publication number: 20040104361Abstract: The marking of identification and orientation information along the edge (E) of a semiconductor wafer (20, 20′) is disclosed. The information may be marked by way of laser marking at one or more locations (10) along a flat portion (14) or bevel (12t, 12b) of the edge (E) of the wafer (20, 20′). The wafer marking (10) may be encoded, for example by way of a 2-D bar code. A system (30) for reading the identification information from wafers (20, 20′) in a carrier (32) is also disclosed. The system (30) includes a sensor (36) for sensing reflected light from the wafer markings (10) along the wafer edge (E), and for decoding identification and orientation therefrom. A motor (38), under the control of feedback (RFB) from the sensor (36), rotates the wafers (20, 20′) by way of a roller (39) until the wafer marking (10) is in view by the sensor (36). A processing system (40), which includes a rotatable chuck (41) upon which the wafer (20, 20′) is placed, is also disclosed.Type: ApplicationFiled: November 10, 2003Publication date: June 3, 2004Inventors: Richard L. Guldi, Keith W. Melcher, John Williston
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Patent number: 6710364Abstract: The marking of identification and orientation information along the edge (E) of a semiconductor wafer (20, 20′) is disclosed. The information may be marked by way of laser marking at one or more locations (10) along a flat portion (14) or bevel (12t, 12b) of the edge (E) of the wafer (20, 20′). The wafer marking (10) may be encoded, for example by way of a 2-D bar code. A system (30) for reading the identification information from wafers (20, 20′) in a carrier (32) is also disclosed. The system (30) includes a sensor (36) for sensing reflected light from the wafer markings (10) along the wafer edge (E), and for decoding identification and orientation therefrom. A motor (38), under the control of feedback (RFB) from the sensor (36), rotates the wafers (20, 20′) by way of a roller (39) until the wafer marking (10) is in view by the sensor (36). A processing system (40), which includes a rotatable chuck (41) upon which the wafer (20, 20′) is placed, is also disclosed.Type: GrantFiled: June 20, 2002Date of Patent: March 23, 2004Assignee: Texas Instruments IncorporatedInventors: Richard L. Guldi, Keith W. Melcher, John Williston
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Publication number: 20040029029Abstract: A photolithography system includes a photolithography tool 32 that includes a stage upon which a semiconductor wafer is mounted. The tool is operable to move the stage to automatically focus a pre-determined image on a surface of the semiconductor wafer. The tool is further operable to log movements of the stage. The system also includes an automation host computer 36 operable to poll the photolithography tool 32 to obtain data reflecting the logged movements of the stage. The automation host computer 36 is further operable to analyze the data and compare the data to pre-determined error conditions. The host computer also takes a pre-determined action, including sending an electronic mail message to the personal computers 38 of relevant line personnel, in the event the data meets the pre-determined error conditions.Type: ApplicationFiled: August 4, 2003Publication date: February 12, 2004Inventors: Chris D. Atkinson, Keith W. Melcher, Richard L. Guldi
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Patent number: 6645684Abstract: A photolithography system includes a photolithography tool 32 that includes a stage upon which a semiconductor wafer is mounted. The tool is operable to move the stage to automatically focus a pre-determined image on a surface of the semiconductor wafer. The tool is further operable to log movements of the stage. The system also includes an automation host computer 36 operable to poll the photolithography tool 32 to obtain data reflecting the logged movements of the stage. The automation host computer 36 is further operable to analyze the data and compare the data to pre-determined error conditions. The host computer also takes a pre-determined action, including sending an electronic mail message to the personal computers 38 of relevant line personnel, in the event the data meets the pre-determined error conditions.Type: GrantFiled: October 5, 2001Date of Patent: November 11, 2003Assignee: Texas Instruments IncorporatedInventors: Chris D. Atkinson, Keith W. Melcher, Richard L. Guldi
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Publication number: 20030068833Abstract: A photolithography system includes a photolithography tool 32 that includes a stage upon which a semiconductor wafer is mounted. The tool is operable to move the stage to automatically focus a pre-determined image on a surface of the semiconductor wafer. The tool is further operable to log movements of the stage. The system also includes an automation host computer 36 operable to poll the photolithography tool 32 to obtain data reflecting the logged movements of the stage. The automation host computer 36 is further operable to analyze the data and compare the data to pre-determined error conditions. The host computer also takes a pre-determined action, including sending an electronic mail message to the personal computers 38 of relevant line personnel, in the event the data meets the pre-determined error conditions.Type: ApplicationFiled: October 5, 2001Publication date: April 10, 2003Inventors: Chris D. Atkinson, Keith W. Melcher, Richard L. Guldi
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Publication number: 20020153620Abstract: The marking of identification and orientation information along the edge (E) of a semiconductor wafer (20, 20′) is disclosed. The information may be marked by way of laser marking at one or more locations (10) along a flat portion (14) or bevel (12t, 12b) of the edge (E) of the wafer (20, 20′). The wafer marking (10) may be encoded, for example by way of a 2-D bar code. A system (30) for reading the identification information from wafers (20, 20′) in a carrier (32) is also disclosed. The system (30) includes a sensor (36) for sensing reflected light from the wafer markings (10) along the wafer edge (E), and for decoding identification and orientation therefrom. A motor (38), under the control of feedback (RFB) from the sensor (36), rotates the wafers (20, 20′) by way of a roller (39) until the wafer marking (10) is in view by the sensor (36). A processing system (40), which includes a rotatable chuck (41) upon which the wafer (20, 20′) is placed, is also disclosed.Type: ApplicationFiled: June 20, 2002Publication date: October 24, 2002Inventors: Richard L. Guldi, Keith W. Melcher, John Williston
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Patent number: 6420792Abstract: The marking of identification and orientation information along the edge (E) of a semiconductor wafer (20, 20′) is disclosed. The information may be marked by way of laser marking at one or more locations (10) along a flat portion (14) or bevel (12t, 12b) of the edge (E) of the wafer (20, 20′). The wafer marking (10) may be encoded, for example by way of a 2-D bar code. A system (30) for reading the identification information from wafers (20, 20′) in a carrier (32) is also disclosed. The system (30) includes a sensor (36) for sensing reflected light from the wafer markings (10) along the wafer edge (E), and for decoding identification and orientation therefrom. A motor (38), under the control of feedback (RFB) from the sensor (36), rotates the wafers (20, 20′) by way of a roller (39) until the wafer marking (10) is in view by the sensor (36). A processing system (40), which includes a rotatable chuck (41) upon which the wafer (20, 20′) is placed, is also disclosed.Type: GrantFiled: September 14, 2000Date of Patent: July 16, 2002Assignee: Texas Instruments IncorporatedInventors: Richard L. Guldi, Keith W. Melcher, John Williston
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Patent number: 6298282Abstract: A method of detecting object scratching during robotic arm movement of the object. The method includes providing a robotic arm for grasping and placing of an object into a cassette and providing a cassette having an entrance for receiving an object therein. A vibration sensor is placed on at least one of the robotic arm or under the cassette control of the robotic arm is provided in response to a malfunction indication at least one of the vibration sensors. There can further be provided an air flow across the entrance of the cassette with placement of a particle counter at the downstream end of the air flow across cassette entrance, wherein the control of said robotic arm is provided in response to a malfunction indication at least one of the vibration sensors and the particle counter. The control can also be provided in response to both of the vibration sensors or one or both of the vibration sensors and the particle counter.Type: GrantFiled: June 23, 1999Date of Patent: October 2, 2001Assignee: Texas Instruments IncorporatedInventors: Richard L. Guldi, Robin D. Worley, Keith W. Melcher