Patents Assigned to MPI Corporation
  • Patent number: 9423424
    Abstract: A current-diverting guide plate for use in a probe module is disclosed to include a plate body having a first surface, a second surface opposite to the first surface, and a plurality of through holes penetrating through the first and second surfaces. A conducting layer is provided at a periphery wall of each through hole of the plate body and electrically coupled to a probe slidably inserted through the through holes. A current-diverting circuit trace is disposed on the first surface of the plate body and electrically connected with the conducting layers for diverting the electric current flowing through probes. Thus, the current-diverting guide plate can be used to prevent the probes from possible damage due to an excessive instantaneous current.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: August 23, 2016
    Assignee: MPI CORPORATION
    Inventors: Hsien-Ta Hsu, Horng-Kuang Fan
  • Patent number: 9410986
    Abstract: A testing jig includes a substrate, a carrier provided on the substrate, two conductive members made of a conductive material, and a compensation member made of a conductive material. The substrate has a signal circuit and a grounding circuit thereon. The carrier has a base board made of an insulating material and a conductive circuit made of a conductive material provided thereon. The base board has a signal perforation aligning with the signal circuit, a grounding perforation aligning with the grounding circuit, and multiple compensation holes. The conductive members both have an end exposed out of the carrier, and are respectively fitted in the signal perforation and the grounding perforation to make another end thereof contact the signal circuit or the grounding circuit. The compensation member is fitted in one of the compensation holes to be electrically connected to the conductive member in the grounding perforation through the conductive circuit.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: August 9, 2016
    Assignee: MPI CORPORATION
    Inventors: Wei-Cheng Ku, Hao Wei, Chia-Nan Chou, Chih-Hao Ho
  • Patent number: 9377214
    Abstract: A heating device includes a housing having a flow channel, a heater disposed in the flow channel, an optical rod, a light guider and a photodetector. The optical rod has a transparent body, a first end portion, and a second end portion located inside the housing. The light guider is provided at the second end portion for guiding lights emitted by the heater toward the first end portion. The photodetector is located around the first end portion and faces the second end portion for indirectly receiving the lights emitted by the heater to the light guider through the transparent body. The temperature of the heater can be measured efficiently and timely by using the photodetector having a high responding speed, such that an overheat or damage of the heater can be prevented by controlling the heater based on the measured temperature.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: June 28, 2016
    Assignee: MPI CORPORATION
    Inventors: Helge Jacob Krystad, Yueh-Ying Lee, Ying-Chiao Chang
  • Patent number: 9354253
    Abstract: A probe module includes a substrate having a through hole, and at least four probe-needle rows arranged on the substrate. The probe-needle rows are arranged from a first side to a second side along a first direction. Each of the probe-needle rows has at least two needles arranged along a second direction. Each of the needles has a contact segment and an arm segment having an included angle with the contact segment. An end of the arm segment is connected to the substrate, and the other end of which extends toward the through hole to connect the contact segment. The lengths of the contact segments of the needles of each of the probe-needle rows are the same. The included angles of the needles of the probe-needle rows along the first direction are gradually increased from the first side to the second side.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: May 31, 2016
    Assignee: MPI Corporation
    Inventor: Chia-Tai Chang
  • Patent number: 9347971
    Abstract: A probing device includes a circuit board, a reinforcing plate, at least one space transformer and at least one probe assembly. The reinforcing plate is disposed on the circuit board, and the reinforcing plate has a plurality of inner conductive wires electrically connecting to those of the circuit board. The reinforcing plate defines a plurality of receiving space therein. The space transformer is disposed on the reinforcing plate, and the space transformer has a plurality of inner conductive wires electrically connecting to those of the reinforcing plate via a plurality of first solder balls. The probe assembly is disposed on the space transformer, and the probe assembly includes a plurality of probes. The first solder balls are disposed in the receiving spaces, and the reinforcing plate abuts against the space transformer.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: May 24, 2016
    Assignee: MPI CORPORATION
    Inventors: Chien-Chou Wu, Ming-Chi Chen, Chung-Che Li
  • Publication number: 20160143141
    Abstract: A multilayer circuit board includes a first substrate and a second substrate in stack. The first substrate first substrate a first pad, and a first circuit, wherein the first circuit is embedded in the first substrate, and the first pad is electrically connected to the first circuit. The second substrate has a first through hole, a second pad, and a second circuit, wherein the first through hole is opened at both sides of the second substrate, and the first pad of the first substrate is in the first through hole; the second circuit is embedded in the second substrate, and the second pad is electrically connected to the second circuit. The pads on each substrate are exposed by the through hole(s) of the above substrate(s) to shorten the null sections of the interconnectors and reduce the interference from the null sections.
    Type: Application
    Filed: February 11, 2015
    Publication date: May 19, 2016
    Applicant: MPI CORPORATION
    Inventors: WEI-CHENG KU, JUN-LIANG LAI, CHIH-HAO HO
  • Publication number: 20160139179
    Abstract: A high-frequency cantilever type probe card includes a base board, a probe base provided on the base board, two probes, and a capacitor having opposite ends electrically connected to the probes respectively. The probe base is made of an insulating material, and the probes are made of a conductive material. Each of the probes has an arm and a tip, wherein the arm is connected to the probe base, and the tip is adapted to contact a pad of a DUT. When the DUT generates a testing signal with a high frequency, and the testing signal is transmitted to one of the probes, the capacitor, and the other one of the probes in sequence, and then transmitted back to the DUT.
    Type: Application
    Filed: February 11, 2015
    Publication date: May 19, 2016
    Applicant: MPI CORPORATION
    Inventors: WEI-CHENG KU, HAO WEI, JUN-LIANG LAI, CHIH-HAO HO
  • Patent number: 9341648
    Abstract: The probe card includes a substrate, at least two IC boards, and a plurality of probe pads. The IC boards are located on the substrate, and a predetermined distance is formed between the IC boards. Each of the IC boards has a plurality of lead connection points. The probe pads are plated on the IC boards, and are respectively connected to the lead connection points to cover the lead connection points. A probe area is surrounded by the probe pads on each of the IC boards. The probe pads are used to abut against plural probes.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: May 17, 2016
    Assignee: MPI Corporation
    Inventors: Chung-Tse Lee, Chien-Chou Wu, Tsung-Yi Chen, Ming-Chi Chen
  • Publication number: 20160128176
    Abstract: A multilayer circuit board includes a first substrate and a second substrate in stack. The first substrate is provided with a first pad, a second pad, and a first sub-circuit. The first pad and the second pad are electrically connected to the first sub-circuit. The second substrate has a top surface, a bottom surface, and an opening. The bottom surface of the second substrate is attached to the top surface of the first substrate. The opening extends from the top surface to the bottom surface of the second substrate. The first pad of the first substrate is in the opening of the second substrate; the second pad of the first substrate is not covered by the second substrate. The second substrate further provided with a pad on the top surface and a second sub-circuit electrically connected to the pad of the second substrate.
    Type: Application
    Filed: February 11, 2015
    Publication date: May 5, 2016
    Applicant: MPI CORPORATION
    Inventors: WEI-CHENG KU, JUN-LIANG LAI, CHIH-HAO HO
  • Patent number: 9316685
    Abstract: A probe card, which is used to transmit power signals and test signals from a tester to a DUT, includes a pin base, a plurality of signal pins, a signal conducting circuit and at least one power conducting circuit. The signal pins are made of conductive materials, and each contacts the DUT with an end thereof; the signal conducting circuit has a first resistance, and electrically connects the tester and the other end of one of the signal pin to transmit the test signals to the DUT; the power conducting circuit has a second resistance which is much less than the first resistance, and electrically connects the tester and the other end of one of the signal pin which is not connected with the signal conducting circuit to transmit the power signals to the DUT.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: April 19, 2016
    Assignee: MPI CORPORATION
    Inventors: Wei-Cheng Ku, Jun-Liang Lai
  • Patent number: 9244018
    Abstract: A probe holding structure includes a substrate and a plurality of holding modules. The substrate has an opening and a plurality of grooves arranged around a periphery of the opening. The holding modules are connected with the grooves, respectively. Each holding modules includes a fixing member and a plurality of probes. The fixing member is connected with a corresponding groove. The probes are connected with the fixing member and pass through the corresponding groove. The probe holding structure is combined with a lens adjusting mechanism having a lens to form an optical inspection device for testing electric characteristics of chips.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: January 26, 2016
    Assignee: MPI Corporation
    Inventors: Chia-Tai Chang, Chin-Yi Tsai, Chiu-Kuei Chen, Chen-Chih Yu, Chien-Chang Lai, Chin-Tien Yang, Hui-Pin Yang, Keng-Shieng Chang, Yun-Ru Huang
  • Publication number: 20160018441
    Abstract: A probe card includes a connecting circuit board, a connector, and a probe. The connecting circuit board includes a substrate having a signal via and a plurality of ground vias, a signal feeding structure disposed on the substrate, and a connecting layer having the connector disposed thereon. The signal feeding structure includes a signal feeding pad and a ground pad, which is connected to the ground via, and has a matching compensation opening having a first side and a second side wider than the first side. The signal feeding pad does not contact the ground pad, and has a first end and a second end wider than the first end. The second end is connected to the signal via. The connecting layer has a signal connecting portion connected to the signal via, and a ground connecting portion connected to the ground vias. The probe is connected to the first end.
    Type: Application
    Filed: July 13, 2015
    Publication date: January 21, 2016
    Applicant: MPI CORPORATION
    Inventors: WEI-CHENG KU, HAO WEI, JUN-LIANG LAI, CHIH-HAO HO
  • Publication number: 20160018439
    Abstract: A probe card includes a connecting circuit board, a connector, and a probe. The connecting circuit board includes a substrate having a signal via and a plurality of ground vias, a signal feeding structure disposed on the substrate, and a connecting layer having the connector disposed thereon. The signal feeding structure includes a signal feeding pad and a ground pad, which is connected to the ground via, and has a matching compensation opening having a first side and a second side wider than the first side. The signal feeding pad does not contact the ground pad, and has a first end and a second end wider than the first end. The second end is connected to the signal via. The connecting layer has a signal connecting portion connected to the signal via, and a ground connecting portion connected to the ground vias. The probe is connected to the first end.
    Type: Application
    Filed: July 13, 2015
    Publication date: January 21, 2016
    Applicant: MPI CORPORATION
    Inventors: WEI-CHENG KU, HAO WEI, JUN-LIANG LAI, CHIH-HAO HO
  • Patent number: 9234917
    Abstract: A probing device and manufacturing method thereof are provided. The manufacturing method includes first disposing a plurality of space transformers on a reinforcing plate and the space transformer includes several first pads. Then, the space transformer is fixed on the reinforcing plate. Thereafter, photoresist films having a plurality of openings is formed on the space transformer. The first pads are disposed in the openings. After that, a metal layer is formed and covered on the first pad. Later, the photoresist film is removed and the metal layer is planarized to form a second pad. Afterwards, the reinforcing plate is electrically connected with a PCB. Thereafter, a probe head having a plurality of probing area is provided and each probing area is corresponding to one of the space transformer. The probes in the probing area are electrically connected with the internal circuitry of the space transformer.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: January 12, 2016
    Assignee: MPI CORPORATION
    Inventors: Chien-Chou Wu, Ming-Chi Chen, Chung-Che Li
  • Patent number: 9201098
    Abstract: A high frequency probe card includes at least one substrate having at least one first opening, an interposing plate disposed on the at least one substrate and having at least one second opening corresponding to the at least one first opening, a circuit board disposed on the interposing plate and having a third opening corresponding to the at least one first and second openings, and at least one probe module including at least one ground probe and at least one high frequency signal probe passing through the corresponding substrate, the interposing plate and the third opening and being electrically connected with the circuit board. Each high frequency signal probe includes a signal probe and a first conductor corresponding to the signal probe and being electrically connected with the ground probe. An insulation layer is disposed between the first conductor and the signal probe.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: December 1, 2015
    Assignee: MPI CORPORATION
    Inventors: Chia-Tai Chang, Chin-Yi Tsai, Chiu-Kuei Chen, Chen-Chih Yu, Chien-Chang Lai, Chin-Tien Yang, Hui-Pin Yang, Keng-Shieng Chang, Yun-Ru Huang
  • Patent number: 9157929
    Abstract: A method of forming an apparatus for probing die electricity, which determines a reinforcement structure according to features of a converting plate, and combines the converting plate, reinforcement structure and a substrate for forming the apparatus for probing die electricity. In an embodiment, the apparatus for probing die electricity further comprises a substrate, a converting plate, a needle module and a reinforcement structure. The converting plate comprises two opposite surfaces respectively having a plurality of first and second conductive elements. The needle module comprises a plurality of needles respectively and electrically connected to the plurality second conductive elements. The reinforcement structure is disposed between the converting plate and the substrate.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: October 13, 2015
    Assignee: MPI CORPORATION
    Inventors: Chung-Tse Lee, Chien-Chou Wu, Yi-Ming Chan
  • Publication number: 20150241544
    Abstract: A method of calibrating and debugging a testing system is provided. First, values of different electrical path segments are calibrated, and parameters of the electrical path segments while being calibrated are saved. After calibration, electrical tests can be processed on a DUT. If the testing system malfunctions, the values of the electrical path segments are calibrated again to compare the current parameters to the previously saved parameters. The component which goes wrong can be found out quickly in this way.
    Type: Application
    Filed: November 25, 2014
    Publication date: August 27, 2015
    Applicant: MPI CORPORATION
    Inventors: WEI-CHENG KU, SHAO-WEI LU, HAO WEI, YU-TSE WANG
  • Publication number: 20150233969
    Abstract: A testing system includes a test machine, a plurality of probe sets, a data input device, a controller, a memory, and a data output device. The test machine has a platform for a DUT to be placed thereon, and a test arm which is movable relative to the platform. The probe sets are provided on the test machine with at least one probe set provided on the test arm to contact the DUT. The data input device is used to input information about the DUT. The controller is electrically connected to the test arm, the probe set on the test arm, and the data input device to move the test arm to a predetermined position according to the inputted information, and to make the probe set contact the DUT for electrical test. The memory saves electrical test result, which is outputted by the data output device.
    Type: Application
    Filed: November 25, 2014
    Publication date: August 20, 2015
    Applicant: MPI CORPORATION
    Inventors: WEI-CHENG KU, SHAO-WEI LU, HAO WEI, YU-TSE WANG
  • Patent number: 9110130
    Abstract: A probe head of vertical probe card and a manufacturing method of a composite board thereof are provided. The probe head includes guide plate, composite board, and probe pin. The composite board includes first board layer and second board layer which are laminated together by joining operation. The composite board further includes through hole which is made by drilling and passed all the way through the first board layer and the second board layer. The friction coefficient of the first board layer is less than that of the second board layer, and the thermal expansion coefficient of the second board layer is less than that of the first board layer. The probe pin is penetrated all the way through the through hole of the composite board. By this, friction between the probe pin and composite board is reduced so as to stabilize the position of the probe pin.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: August 18, 2015
    Assignee: MPI Corporation
    Inventors: Ming-Chi Chen, Horng-Kuang Fan, Mao-Fa Shen, Ming-Chu Chueh, Bang-Shun Liu, Che-Wei Lin
  • Publication number: 20150212186
    Abstract: A method of calibrating and operating a testing system is provided, wherein the testing system has a test machine, a conducting wire set, a calibration module, and a probe module. The method includes the following steps: electrically connect the test machine and the conducting wire set; electrically connect the conducting wire set and the calibration module; send out electrical signals from the test machine to the calibration module for doing at least one test among a short-circuit test, an open-circuit test, and an impedance test, and then calibrate the testing system by correspondingly performing compensation based on results of these tests; electrically disconnect the conducting wire set and the calibration module, and electrically connect the conducting wire set and the probe module; abut the probe module against a DUT; send out electrical signals from the test machine to the probe module to do electrical tests on the DUT.
    Type: Application
    Filed: December 2, 2014
    Publication date: July 30, 2015
    Applicant: MPI CORPORATION
    Inventors: WEI-CHENG KU, SHAO-WEI LU, SHOU-JEN TSAI, YU-TSE WANG