Patents Assigned to Delta Design, Inc.
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Patent number: 7336197Abstract: A LED lighting system for reading multiple data matrix codes on device populated transport media with a line scan camera, includes a light housing, a plurality of LED circuit bars, having a plurality of LEDs, mounted to an inner surface of the light housing arranged to provide high angle lighting and low angle lighting and a light controller operatively connected to the light housing to selectively control the light intensity, the light distribution and the angle of the LEDs on each of the plurality of LED array bars, whereby the LED lighting system can reduce texture noise and detect contrast in color or contrast in texture on the device populated transport media. The LED lighting system includes a device cooling system having an air compressor for cooling the LEDs such that they can operate at an optimal level.Type: GrantFiled: March 30, 2006Date of Patent: February 26, 2008Assignee: Delta Design, Inc.Inventors: Kexiang Ken Ding, Brian Avery, Kenneth B. Uekert, Samer Kabbani, Torsak Sethanant
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Patent number: 7310230Abstract: A system for maintaining an IC-chip near a set-point temperature while electrical power dissipation in the IC-chip is varied includes a container having an open end with a seal ring. Located in the container is at least one nozzle for spraying liquid coolant droplets on a portion of an IC-module which holds the IC-chip. This spraying of the liquid coolant occurs while the seal ring is pressed against the IC-module. Also, a pressure reducing means is coupled to the container for producing a sub-atmospheric pressure in the space between the container and the IC-module while the seal ring is pressed against the IC-module.Type: GrantFiled: August 21, 2003Date of Patent: December 18, 2007Assignee: Delta Design, Inc.Inventors: Jerry Ihor Tustaniwskyi, James Wittman Babcock
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Patent number: 7243704Abstract: A mechanical assembly, for regulating the temperature of an electronic device, includes a gimbal and a heat-exchanger which is attached to the gimbal. The gimbal includes a base member, a carrier member, and a spring which has—1) a first end with a rigid coupling to one of the base and carrier members, and 2) a second end with a slideable coupling to the remaining member. The slideable coupling prevents any gap from occurring between the heat-exchanger and the electronic device when they are pressed together.Type: GrantFiled: November 18, 2004Date of Patent: July 17, 2007Assignee: Delta Design, Inc.Inventors: Jerry Ihor Tustaniwskyi, James Wittman Babcock, Henry Jen Kuo
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Patent number: 7224586Abstract: A system for maintaining an IC-chip near a set-point temperature while electrical power dissipation in the IC-chip is varied includes a container having an open end with a seal ring. Located in the container is at least one nozzle for spraying liquid coolant droplets on a portion of an IC-module which holds the IC-chip. This spraying of the liquid coolant occurs while the seal ring is pressed against the IC-module. Also, a pressure reducing means is coupled to the container for producing a sub-atmospheric pressure in the space between the container and the IC-module while the seal ring is pressed against the IC-module.Type: GrantFiled: January 20, 2006Date of Patent: May 29, 2007Assignee: Delta Design, Inc.Inventors: Jerry Ihor Tustaniwskyi, James Wittman Babcock
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Patent number: 7199597Abstract: A dual feedback control system maintains the temperature of an IC-chip near a set-point while the IC-chip dissipates a varying amount of electrical power. The first feedback circuit sends electrical power to an electric heater with a variable magnitude that compensates for changes in the IC-chip power. The second feedback circuit passes a liquid refrigerant to an evaporator, which is connected to the heater, with a variable flow rate that reduces electrical power usage in the heater over that which occurs if the flow rate is fixed.Type: GrantFiled: February 16, 2004Date of Patent: April 3, 2007Assignee: Delta Design, Inc.Inventors: Jerry Ihor Tustaniwskyj, James Wittman Babcock
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Patent number: 7100389Abstract: An apparatus and method for controlling the temperature of an electronic device under test utilizes a thermal head spaced apart from a movable support structure by a mechanical isolation assembly. The support structure has a manifold configured to route refrigerant fluid between the evaporator head and components of a refrigeration system. The mechanical isolation assembly is configured to compensate for variations in the planar orientation of the device under test. Moreover, the mechanical isolation assembly preferably includes bellows through which the refrigerant fluid is conducted.Type: GrantFiled: July 16, 2002Date of Patent: September 5, 2006Assignee: Delta Design, Inc.Inventors: Lewis S. Wayburn, Ian G. Spearing, Charles R. Schmidt, Jr.
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Patent number: 7062934Abstract: An apparatus for controlling the temperature of an electronic device. The apparatus comprises a refrigeration system including a compressor and a multi-pass heat exchanger. The refrigeration system is operative to circulate a refrigerant fluid through a fluid flow loop such that the refrigerant fluid will change between gaseous and liquid states to alternately absorb and release thermal energy. The refrigerant fluid is pre-cooled in the heat exchanger by a pre-cooling refrigerant stream. A thermal head is connected into the fluid flow loop and has a temperature controlled surface.Type: GrantFiled: September 30, 2004Date of Patent: June 20, 2006Assignee: Delta Design, Inc.Inventors: Terry Craps, Ian G. Spearing, Matthew F. W. Brown, John E. Voshell, John D. Ruth
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Patent number: 7017358Abstract: An apparatus for controlling the temperature of an electronic device under test includes a thermal head. The thermal head defines a flow channel for passage of a refrigerant fluid so as to cause transfer of thermal energy between the electronic device and the thermal head. A refrigeration system is connected in fluid communication with the flow channel of the thermal head to supply refrigerant fluid thereto. An inlet valve and outlet valve are provided to facilitate disconnection of the thermal head from the refrigeration system. The valves are sequentially closed with the refrigeration system continuing to operate during the interim period so as to reclaim the refrigerant fluid. Accordingly, thermal head may be disconnected from refrigeration system and removed.Type: GrantFiled: March 19, 2004Date of Patent: March 28, 2006Assignee: Delta Design, Inc.Inventors: Lewis S. Wayburn, Ian G. Spearing, Derek E. Gage
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Patent number: 6993922Abstract: An apparatus for controlling the temperature of an electronic device under test includes a thermal head having a temperature controlled surface for making thermal contact with the electronic device. The thermal head defines a flow channel for passage of a refrigerant fluid so as to cause transfer of thermal energy between the electronic device and the thermal head. A refrigeration system is connected in fluid communication with the flow channel of the thermal head to supply refrigerant fluid thereto. The refrigeration system includes a metering valve operative to regulate introduction of the refrigerant fluid into the thermal head. A controller is operative to control the metering valve for maintaining a predetermined temperature at the temperature controlled surface.Type: GrantFiled: December 29, 2003Date of Patent: February 7, 2006Assignee: Delta Design, Inc.Inventors: Charles B. Wall, Cynthia M. Barnes
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Patent number: 6985000Abstract: A solid state thermal control device contains a substrate and a plurality of solid state thermal elements on the substrate. The thermal elements are adapted to provide thermal control to a device under test (DUT). Each solid state thermal element contains at least one solid state heater and an active control circuit adapted to control a thermal output of the heater. Optionally, the each thermal element may also include a solid state temperature sensor.Type: GrantFiled: July 28, 2004Date of Patent: January 10, 2006Assignee: Delta Design, Inc.Inventors: Jan Feder, Rick Beyerle, Stephen Byers, Thomas Jones
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Patent number: 6975028Abstract: An apparatus for controlling the temperature of an electronic device utilizes a thermal head attached to a base structure including an integral isolation arrangement. For example, the isolation arrangement can be formed as a planar spring defined by slots in the base structure. The base structure has a manifold configured to route refrigerant fluid between the thermal head and components of a refrigeration system. The isolation arrangement is normally planar but is movable to facilitate engagement of the thermal head with the electronic device. The isolation arrangement also compensates for variations in the planar orientation of the electronic device.Type: GrantFiled: July 9, 2003Date of Patent: December 13, 2005Assignee: Delta Design, Inc.Inventors: Lewis S. Wayburn, Charles M. Mahaffey, Ian G. Spearing, Derek E. Gage, Todd C. Sharpley, Cynthia M. Barnes
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Patent number: 6886976Abstract: A combined heater and heat sink assembly regulates the temperature of a device under test. The combined heating/cooling assembly includes a heater assembly inlay that is received within a heat sink. The heater assembly includes a heating surface that is coplanar with a cooling surface of the heat sink. In operation, the heating/cooling assembly provides concurrent hot and cold contact points for the device under test. The heater assembly is thermally insulated from the heat sink such that the majority of the heat generated by the heater assembly is directly applied to the device under test; very little of the generated heat is lost to the heat sink. On the other hand, the heat sink provides a relatively low thermal resistance between the device under test and a cold source such as a coolant. Accordingly, the combined heating/cooling assembly provides parallel thermal paths between the device under test and both a hot source and a cold source.Type: GrantFiled: August 15, 2003Date of Patent: May 3, 2005Assignee: Delta Design, Inc.Inventors: Thomas Francis Gaasch, Thanh Trieu
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Patent number: 6864678Abstract: A plunge mechanism includes an elongated, hollow probe that vacuum grips at its free end, and carries, without relative movement therebetween, an electronic device under test (DUT) to a test site on a board, or socket, of a test circuit. A reciprocating drive plunges the DUT in a first direction to a test site where the leads of the DUT each align with and connect electrically to an associated electrical contact. The drive uses a high-precision linear slide to maintain the alignment of the probe with the test site during the plunging movement. The probe materials and dimensions provide sufficient stiffness to resist a shift of the IC out of alignment due to the weight of the gripped DUT, vibrations, or contact forces between the DUT and the board or socket. The diameter of the probe is preferably smaller than the x-y dimensions of the DUT. No DUT alignment members are used on the test board or socket that limit the physical proximity of the DUT to its preferred test position with respect to the test circuit.Type: GrantFiled: July 16, 2003Date of Patent: March 8, 2005Assignee: Delta Design, Inc.Inventors: Charlie Ryder, John A. Heald, Robert Hennessey
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Patent number: 6862405Abstract: An active temperature control system for a DUT utilizes a heat sink containing HFE7100 liquid and an electric heater. The liquid is cooled below the set point and the heater is used to bring the DUT up to the set point. Set points in the range of ?10 degrees C. to +110 degrees C. can be achieved. The heat sink utilizes only a single coolant for all of the set points, allowing set points to be changed within a few minutes. At a given set point, the heater provides a quick response to offset the effect of self-heating and keep the set point deviation to within a few degrees C. Power following techniques can be utilized to achieve the quick response.Type: GrantFiled: August 21, 2002Date of Patent: March 1, 2005Assignee: Delta Design, Inc.Inventors: Mark F. Malinoski, Thomas P. Jones, Brian Annis, Jonathan E. Turner
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Patent number: 6825681Abstract: A solid state thermal control device contains a substrate and a plurality of solid state thermal elements on the substrate. The thermal elements are adapted to provide thermal control to a device under test (DUT). Each solid state thermal element contains at least one solid state heater and an active control circuit adapted to control a thermal output of the heater. Optionally, the each thermal element may also include a solid state temperature sensor.Type: GrantFiled: July 19, 2002Date of Patent: November 30, 2004Assignee: Delta Design, Inc.Inventors: Jan Feder, Rick Beyerle, Stephen Byers, Thomas Jones
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Patent number: 6788084Abstract: A system and method for controlling a temperature of a device during testing with a thermal controller and a heat exchanger includes measuring an instantaneous power consumption of the device during testing. The heat exchanger is controlled with the thermal controller using the measured instantaneous power consumption by the device to regulate the temperature of the device during testing, wherein the heat exchanger is in conductive contact with the device.Type: GrantFiled: September 5, 2002Date of Patent: September 7, 2004Assignee: Delta Design, Inc.Inventors: Thomas P. Jones, Jonathan E. Turner, Mark F. Malinoski
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Publication number: 20040012404Abstract: A solid state thermal control device contains a substrate and a plurality of solid state thermal elements on the substrate. The thermal elements are adapted to provide thermal control to a device under test (DUT). Each solid state thermal element contains at least one solid state heater and an active control circuit adapted to control a thermal output of the heater. Optionally, the each thermal element may also include a solid state temperature sensor.Type: ApplicationFiled: July 19, 2002Publication date: January 22, 2004Applicant: Delta Design, Inc.Inventors: Jan Feder, Rick Beyerle, Stephen Byers, Thomas Jones
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Patent number: 6650132Abstract: A method for controlling the temperature of a DUT during a testing operation, includes a) measuring a parameter related to power consumption by the DUT during testing, such as current consumption; and b) using the parameter related to power consumption to operate a temperature control device to compensate for temperature change due to changes in power consumption by the DUT during testing. The control can be closed loop or open loop with control signals incorporated into a test program. Apparatus for controlling the temperature of a DUT during testing, includes a) a device for measuring a parameter related to power consumption by the DUT during testing; b) a temperature control device which operates to control the temperature of the DUT during test; and c) a device for controlling operation of the temperature control device according to the measured parameter related to power consumption.Type: GrantFiled: July 19, 2002Date of Patent: November 18, 2003Assignee: Delta Design, Inc.Inventor: Jean Luc Pelissier
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Patent number: 6636062Abstract: A combined heater and heat sink assembly regulates the temperature of a device under test. The combined heating/cooling assembly includes a heater assembly inlay that is received within a heat sink. The heater assembly includes a heating surface that is coplanar with a cooling surface of the heat sink. In operation, the heating/cooling assembly provides concurrent hot and cold contact points for the device under test. The heater assembly is thermally insulated from the heat sink such that the majority of the heat generated by the heater assembly is directly applied to the device under test; very little of the generated heat is lost to the heat sink. On the other hand, the heat sink provides a relatively low thermal resistance between the device under test and a cold source such as a coolant. Accordingly, the combined heating/cooling assembly provides parallel thermal paths between the device under test and both a hot source and a cold source.Type: GrantFiled: April 10, 2001Date of Patent: October 21, 2003Assignee: Delta Design, Inc.Inventors: Thomas Francis Gaasch, Thanh Trieu
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Patent number: 6549026Abstract: An apparatus for controlling the temperature, during testing, of IC devices formed on a wafer includes a chuck for locating the devices during testing and multiple temperature control devices arranged on the chuck to correspond with the arrangement of the devices being tested on the wafer. The chuck itself can be cooled or heated, such as by the flow of a temperature-controlled fluid, and a temperature control device such as a heating element can be associated with each IC device being tested. Alternatively, a separate heat sink can be associated with each temperature control device and its corresponding IC device.Type: GrantFiled: July 14, 2000Date of Patent: April 15, 2003Assignee: Delta Design, Inc.Inventors: Larry DiBattista, Mark Malinoski, Tomoya Shitara