Patents by Inventor Wei-Cheng Ku

Wei-Cheng Ku 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).

  • Patent number: 8816713
    Abstract: A probe card for high-frequency signal transmission includes a circuit board with transmission lines, a plurality of probes, and a signal path adjuster having first lead wires with a same length respectively connected between the transmission lines and the probes. Each first lead wire is selectively replaceable by a second lead having a length different from that of the first lead wire. As a result, a first high-frequency signal transmitting from one transmission line through the associated first lead wire to the associated probe and a second high-frequency signal transmitting from another transmission line through the associated second lead wire to the associated probe may have a same output timing when the first and second high-frequency signals are synchronously inputted into the circuit board.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: August 26, 2014
    Assignee: MPI Corporation
    Inventors: Wei-Cheng Ku, Chih-Hao Ho, Chen-Kuo Kao, Chao-Ping Hsieh
  • Publication number: 20140232421
    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: Application
    Filed: November 11, 2013
    Publication date: August 21, 2014
    Applicant: MPI CORPORATION
    Inventors: Wei-Cheng KU, Jun-Liang LAI
  • Publication number: 20140176177
    Abstract: A probe card which is capable of transmitting high-frequency signals provided by a DUT, and the DUT includes an output pin group and an input pin group for sending and receiving the high-frequency signals respectively. The probe card includes a first signal pin group, a second signal pin group, and a multiband circuit. The first signal pin group is made of a conductive material, and is used to contact the output pin group; the second signal pin group is made of a conductive material too, and is used to contact the input pin group; the multiband circuit is electrically connected to the first signal pin group and the second signal pin group to allow signals within a first bandwidth and a second bandwidth to pass therethrough.
    Type: Application
    Filed: December 24, 2013
    Publication date: June 26, 2014
    Inventors: Wei-Cheng Ku, JUN-LIANG LAI
  • Publication number: 20140103948
    Abstract: A probe card having a configurable structure for exchanging/swapping electronic components for impedance matching is provided. In the probe card, an applied force is exerted on the electronic component so as to make the electronic component electrically connected with at least one conductive contact pad of a supporting unit. The supporting unit is a circuit board or a space transformer. In order to facilitate the exchange or swap of the electronic component, the applied force can be removed. The probe card includes a pressing plate which can be moved between a pressing position and a non-pressing position. The pressing plate has a pressing surface which is contacted with the top end of the electronic component while the pressing plate is in the pressing position. Therefore, the applied force can be generated or removed by changing the positioning of the pressing plate.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: MPI CORPORATION
    Inventors: Chao-Ching Huang, Chih-Hao Ho, Wei-Cheng Ku
  • Patent number: 8648739
    Abstract: A transmission interface includes a first pin, a second pin, a conversion unit, and a decoding unit. The conversion unit receives a serial input data stream via the first pin and receives a serial clock via the second pin. The conversion unit converts the serial input data stream to parallel input data and converts the serial clock to a parallel clock. The serial input data stream has a full swing form. The decoding unit receives and decodes the parallel input data and generates an input data signal according to the decoded parallel input data.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: February 11, 2014
    Assignee: Mediatek Inc.
    Inventors: Wei-Cheng Ku, Chung-Hung Tsai, Chun-Nan Li, Yi-Hsi Chen
  • Patent number: 8638116
    Abstract: A probe card having a configurable structure for exchanging/swapping electronic components for impedance matching and an impedance method therefore are provided. In the probe card, an applied force is exerted on the electronic component so as to make the electronic component electrically connected with at least one conductive contact pad of a supporting unit. The supporting unit is a circuit board or a space transformer. In order to facilitate the exchange or swap of the electronic component, the applied force can be removed. The probe card includes a pressing plate which can be moved between a pressing position and a non-pressing position. The pressing plate has a pressing surface which is contacted with the top end of the electronic component while the pressing plate is in the pressing position. Therefore, the applied force can be generated or removed by changing the positioning of the pressing plate.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: January 28, 2014
    Assignee: MPI Corporation
    Inventors: Chao-Ching Huang, Chih-Hao Ho, Wei-Cheng Ku
  • Patent number: 8542027
    Abstract: A probe card is provided. The probe card can serialize, analogize and divide a digital signal by a analog-to-digital converter (ADC), a digital-to-analog converter (DAC), and a power divided unit respectively. The probe card can increase signal channels, and is not restricted by signal channels of a tester to test more DUTs simultaneously. Moreover, the probe card has fine impedance matching and channels separating to raise testing efficiency and reduce signal loss.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: September 24, 2013
    Assignee: MPI Corporation
    Inventors: Young-Huang Chou, Wei-Cheng Ku, Wen-Pin Su, Jun-Liang Lai, Chao-Ping Hsieh, Ping-Hsiao Liao
  • Publication number: 20130021053
    Abstract: A probe card for high-frequency signal transmission includes a circuit board with transmission lines, a plurality of probes, and a signal path adjuster having first lead wires with a same length respectively connected between the transmission lines and the probes. Each first lead wire is selectively replaceable by a second lead having a length different from that of the first lead wire. As a result, a first high-frequency signal transmitting from one transmission line through the associated first lead wire to the associated probe and a second high-frequency signal transmitting from another transmission line through the associated second lead wire to the associated probe may have a same output timing when the first and second high-frequency signals are synchronously inputted into the circuit board.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 24, 2013
    Inventors: Wei-Cheng KU, Chih-Hao Ho, Chen-Kuo Kao, Chao-Ping Hsieh
  • Publication number: 20120274347
    Abstract: An integrated high-speed probe system is provided. The integrated high-speed probe system includes a circuit substrate for transmitting low-frequency testing signals from a tester through a first probe of the probe assembly to a DUT, and a high-speed substrate for transmitting high-frequency testing signals from the tester to the DUT. The high-speed substrate extends from the upper surface of the circuit substrate in the testing area to the lower surface of the circuit substrate in the probe area for being adjacent to the probe assembly and electrically connecting the second probe. In this way, the tester can transmit testing signals of different frequencies through the integrated high-speed probe system.
    Type: Application
    Filed: April 18, 2012
    Publication date: November 1, 2012
    Inventors: Chun-Chi Wang, Chia-Tai Chang, Ya-Yun Cheng, Wei-Cheng Ku, Chao-Ping Hsieh
  • Publication number: 20120242360
    Abstract: Method for transmitting a high-frequency signal by a coupling effect includes receiving a high-frequency signal by a high-frequency circuit and coupling the high-frequency signal to a coupling circuit by the coupling effect to output a high-frequency coupled signal, and adjusting a filter between the coupling circuit and the high-frequency circuit formed by the coupling effect for adjusting transmission frequency of the high-frequency coupled signal; upon when the high-frequency circuit includes a high-frequency metal probe, the coupling circuit comprises a coupling transmission wire. Meanwhile, upon when the high-frequency circuit includes the coupling transmission wire, the coupling circuit includes the high-frequency metal probe.
    Type: Application
    Filed: March 20, 2012
    Publication date: September 27, 2012
    Inventors: Keng-Yi Huang, Chao-Ping Hsieh, Wei-Cheng Ku, Chih-Hao Ho
  • Publication number: 20120038497
    Abstract: A transmission interface includes a first pin, a second pin, a conversion unit, and a decoding unit. The conversion unit receives a serial input data stream via the first pin and receives a serial clock via the second pin. The conversion unit converts the serial input data stream to parallel input data and converts the serial clock to a parallel clock. The serial input data stream has a full swing form. The decoding unit receives and decodes the parallel input data and generates an input data signal according to the decoded parallel input data.
    Type: Application
    Filed: August 12, 2010
    Publication date: February 16, 2012
    Applicant: MEDIATEK INC.
    Inventors: Wei-Cheng Ku, Chung-Hung Tsai, Chun-Nan Li, Yi-Hsi Chen
  • Patent number: 8106673
    Abstract: A probe for high frequency signal transmission includes a metal pin, and a metal line spacedly arranged on and electrically insulated from the metal pin and electrically connected to grounding potential so as to maintain the characteristic impedance of the probe upon transmitting high frequency signal. The maximum diameter of the probe is substantially equal to or smaller than two times of the diameter of the metal pin. Under this circumstance, a big amount of probes can be installed in a probe card for probing a big amount of electronic devices, so that a wafer-level electronic test can be achieved efficiently and rapidly.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: January 31, 2012
    Assignee: MPI Corporation
    Inventors: Wei-Cheng Ku, Chih-Hao Ho, Chia-Tai Chang, Ho-Hui Lin, Chien-Ho Lin
  • Publication number: 20110221462
    Abstract: A probe card having a configurable structure for exchanging/swapping electronic components for impedance matching and an impedance method therefore are provided. In the probe card, an applied force is exerted on the electronic component so as to make the electronic component electrically connected with at least one conductive contact pad of a supporting unit. The supporting unit is a circuit board or a space transformer. In order to facilitate the exchange or swap of the electronic component, the applied force can be removed. The probe card includes a pressing plate which can be moved between a pressing position and a non-pressing position. The pressing plate has a pressing surface which is contacted with the top end of the electronic component while the pressing plate is in the pressing position. Therefore, the applied force can be generated or removed by changing the positioning of the pressing plate.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 15, 2011
    Inventors: Chao-Ching Huang, Chih-Hao Ho, Wei-Cheng Ku
  • Publication number: 20110095778
    Abstract: A probe card is provided. The probe card detaches or separates a probe assembly and a test signal generator which generates test signals from the tester and the printed circuit board, so as to form a probe system module. The probe system module is secured into a probe card module by one or more securing unit. The probe card module includes the printed circuit board. Control signals from the tester are wirelessly transmitted to the probe system module and drive the probe system module to generate the corresponding test signals. Therefore, the loss or distortion of the test signals due to having longer transmitting distances will be reduced and thus the test quality can be improved.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 28, 2011
    Inventors: Young Huang CHOU, Wei Cheng Ku
  • Publication number: 20100253378
    Abstract: A probe for high frequency signal transmission includes a metal pin, and a metal line spacedly arranged on and electrically insulated from the metal pin and electrically connected to grounding potential so as to maintain the characteristic impedance of the probe upon transmitting high frequency signal. The maximum diameter of the probe is substantially equal to or smaller than two times of the diameter of the metal pin. Under this circumstance, a big amount of probes can be installed in a probe card for probing a big amount of electronic devices, so that a wafer-level electronic test can be achieved efficiently and rapidly.
    Type: Application
    Filed: May 26, 2010
    Publication date: October 7, 2010
    Applicant: MPI CORPORATION
    Inventors: Wei-Cheng Ku, Chih-Hao Ho, Chia-Tai Chang, Ho-Hui Lin, Chien-Ho Lin
  • Publication number: 20100237886
    Abstract: A probe card is provided. The probe card can serialize, analogise and divide a digital signal by a parallel-to-serial converter, a parallel-to-serial converter, and a power divided unit respectively. The probe card can increase signal channels, and is not restricted by signal channels of a tester to test more DUTs simultaneously. Moreover, the probe card has fine impedance matching and channels separating to raise testing efficiency and reduce signal loss.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 23, 2010
    Applicant: MPI CORPORATION
    Inventors: Young Huang Chou, Wei Cheng Ku, Wen Pin Su, Jun Liang Lai, Chao Ping Hsieh, Ping Hsiao Liao
  • Patent number: 7791359
    Abstract: A probe for high frequency signal transmission includes a metal pin, and a metal line spacedly arranged on and electrically insulated from the metal pin and electrically connected to grounding potential so as to maintain the characteristic impedance of the probe upon transmitting high frequency signal. The maximum diameter of the probe is substantially equal to or smaller than two times of the diameter of the metal pin. Under this circumstance, a big amount of probes can be installed in a probe card for probing a big amount of electronic devices, so that a wafer-level electronic test can be achieved efficiently and rapidly.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: September 7, 2010
    Assignee: MPI Corporation
    Inventors: Wei-Cheng Ku, Chih-Hao Ho, Chia-Tai Chang, Ho-Hui Lin, Chien-Ho Lin
  • Patent number: 7782070
    Abstract: A probing device includes a rack that has an outer support member supporting a circuit layer and a center support member supporting a probe assembly. When the tester touching down the circuit layer of the probing device from the top side, the outer support member of the rack bears this touchdown stress. When the probes of the probe holder touching down the electronic components of an IC wafer under test, the center support member of the rack bears the reaction force from the IC wafer.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: August 24, 2010
    Assignee: MJC Probe Incorporated
    Inventors: Wei-Cheng Ku, Chih-Hao Ho, Ho-Hui Lin, Te-Chen Feng, Jun-Liang Lai, Jia-Chi Ho, Chih-Chung Chien, Chien-Huei Huang, Ai-Chuan Chang, Horng-Chuan Sun
  • Patent number: 7724009
    Abstract: A high frequency probe preparation method for making a high frequency probe for high frequency testing to assure signal integrity by means of making a sleeve assembly subject to the size of a predetermined bare needle and then sleeving bare needle by the sleeve assembly to form a high-frequency probe is disclosed to include the steps of: a) providing an insulated tube, and b) forming a conducting layer on the outer surface of the insulated tube which having a metal layer for grounding. The insulated tube and the conducting layer constitute the sleeve assembly. The metal layer is formed by means of physical deposition, chemical deposition, mixture of physical and chemical deposition or electrochemical deposition.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: May 25, 2010
    Assignee: MPI Corporation
    Inventors: Wei-Cheng Ku, Kuan-Chun Chou
  • Patent number: 7683645
    Abstract: A high-frequency probe card includes a circuit board having signal circuits and grounding circuits, transmission lines each having a bi-wire structure including a first lead wire for transmitting high-frequency signal and a second lead wire connected to the grounding circuits, and signal probes. High-frequency test signal provided by a test machine to the signal circuits can be transmitted to the signal probes through the first lead wires. Since the grounding circuits and second lead wires are provided adjacent to the signal circuits and first lead wires respectively, the high-frequency signal can be efficiently transmitted and the characteristic impedance matching can be maintained during high-frequency signal transmission. The bi-wire structure of the transmission lines has a diameter equal to or less than 1 millimeter, thereby allowing installation of a big number of the transmission lines such that the high-frequency test for a big number of electronic elements can be realized.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: March 23, 2010
    Assignee: MPI Corporation
    Inventors: Wei-Cheng Ku, Hsin-Hung Lin, Chih-Hao Ho, Te-Chen Feng