Patents by Inventor Li-Chen Liu

Li-Chen Liu 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: 12224359
    Abstract: A sensor package structure includes a substrate, a sensor chip and a ring-shaped solder mask frame those are disposed on the substrate, a ring-shaped support disposed on a top side of the annular solder mask frame, and a light permeable member that is disposed on the ring-shaped support. The sensor chip is electrically coupled to the substrate. A top surface of the sensor chip has a sensing region, and the sensing region is spaced apart from an outer lateral side of the sensor chip by a distance less than 300 ?m. The ring-shaped solder mask frame surrounds and contacts the outer lateral side of the sensor chip. The light permeable member, the ring-shaped support, and the sensor chip jointly define an enclosed space.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: February 11, 2025
    Assignee: TONG HSING ELECTRONIC INDUSTRIES, LTD.
    Inventors: Fu-Chou Liu, Jui-Hung Hsu, Yu-Chiang Peng, Chien-Chen Lee, Ya-Han Chang, Li-Chun Hung
  • Publication number: 20230258696
    Abstract: A voltage monitoring system includes a voltage dividing circuit and a voltage monitoring device. The voltage dividing circuit is configured to divide a power signal to generate an input voltage. The voltage monitoring device includes an input node, a shunt circuit, a first detection circuit and a second detection circuit. The input node receives the input voltage. The shunt circuit is configured to compare the input voltage with a voltage threshold value to selectively operate in a conducted state or a switched-off state, and configured to output a flag signal to indicate the conducted state or the switched-off state of the shunt circuit. The first detection circuit generates a first detection signal corresponding to the input voltage. The second detection circuit generates a second detection signal corresponding to the power signal according to the flag signal and the first detection signal.
    Type: Application
    Filed: October 20, 2022
    Publication date: August 17, 2023
    Inventors: Yueh-Hsing HUANG, Li-Chen LIU, Chun-Hsi HUANG
  • Patent number: 11342840
    Abstract: A switching device includes a first switch and a threshold voltage adjustment circuitry. The first switch is configured to be selectively turned on according to an enable signal, in order to connect a first pin to a second pin. The threshold voltage adjustment circuitry is configured to adjust a voltage level of a bulk terminal of the first switch according to the enable signal and a voltage provided from a power source. In response to the voltage being de-asserted, the threshold voltage adjustment circuitry is further configured to cut off a signal path between the bulk terminal and the power source.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: May 24, 2022
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Leaf Chen, Ya-Hsuan Sung, Li-Chen Liu
  • Publication number: 20200244165
    Abstract: A switching device includes a first switch and a threshold voltage adjustment circuitry. The first switch is configured to be selectively turned on according to an enable signal, in order to connect a first pin to a second pin. The threshold voltage adjustment circuitry is configured to adjust a voltage level of a bulk terminal of the first switch according to the enable signal and a voltage provided from a power source. In response to the voltage being de-asserted, the threshold voltage adjustment circuitry is further configured to cut off a signal path between the bulk terminal and the power source.
    Type: Application
    Filed: October 24, 2019
    Publication date: July 30, 2020
    Inventors: Leaf CHEN, Ya-Hsuan SUNG, Li-Chen LIU
  • Patent number: 9650813
    Abstract: The anti-theft cable and adaptor ring sets mainly contains a wire, at least an adaptor having a linking element threaded through by the wire, an end connector joining the wire's two ends and turning the wire into a ring, and a protection member housing the end connector. As such various types of adaptors are chained by the anti-theft wire so as to prevent them from being stolen.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: May 16, 2017
    Assignee: WEALLEYS TECHNOLOGIES CO., LTD.
    Inventor: Li-Chen Liu
  • Publication number: 20170058569
    Abstract: The anti-theft cable and adaptor ring sets mainly contains a wire, at least an adaptor having a linking element threaded through by the wire, an end connector joining the wire's two ends and turning the wire into a ring, and a protection member housing the end connector. As such various types of adaptors are chained by the anti-theft wire so as to prevent them from being stolen.
    Type: Application
    Filed: December 15, 2015
    Publication date: March 2, 2017
    Inventor: Li-Chen Liu
  • Publication number: 20140256171
    Abstract: A quick connector assembly includes a first connector, a second connector, and a locking ring. The first connector has a protruding flange which has a plurality of terminal holes. The second connector has a mounting recess which has a plurality of terminals. Thus, the protruding flange of the first connector is inserted into the mounting recess of the second connector, and the terminals of the second connector are inserted into the terminal holes of the first connector, so that the first connector and the second connector are combined together.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Inventor: Li-Chen Liu
  • Patent number: 7946886
    Abstract: A coaxial cable connector includes a connector body, a contact chamber, a copper sleeve, and an observation window opening. A central contact bore is formed inside the observation window opening and an insulation layer is set between the central contact bore and the contact chamber. The central contact bore has a notch formed in a side thereof close to the copper sleeve to receive a core conductor of the coaxial cable to insert therein. The central contact bore also has a stop wall that prevents the core conductor from extending beyond the central contact bore. An insulation block covers the central contact bore, and a window opening bolt is set in engagement with and thus closes the observation window opening to force a projection of the insulation block to depress the core conductor to engage the central contact bore for electrical contact therebetween.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 24, 2011
    Assignee: Wealleys Technologies Co., Ltd.
    Inventor: Li-Chen Liu
  • Patent number: 7390209
    Abstract: A water-proof electric connector module comprises a cable with two ends each provided with a connector head. Each of the connector heads of the cable further includes a front flange encircling a plurality of receiving holes. The outer wall of the connector head is provided with an outer thread, which can be coupled with the inner thread of a complementary connector head at another cable; the complementary connector with an annular groove encircling a plurality of terminal pins. There is further a rotary lock shell encircling the complementary connector head, whereby a pair of connector heads will be stably connected. The connector head with an outer thread can be sealed by a guide head cap, which has a rotary lock shell and an inner thread, capable of being engaged with the outer thread, similar to the complementary connector head.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: June 24, 2008
    Assignee: Wealleys Technologies Co., Ltd.
    Inventor: Li-Chen Liu
  • Publication number: 20070197076
    Abstract: A water-proof electric connector module comprises a cable with two ends each provided with a connector head. Each of the connector heads of the cable further includes a front flange encircling a plurality of receiving holes. The outer wall of the connector head is provided with an outer thread, which can be coupled with the inner thread of a complementary connector head at another cable; the complementary connector with an annular groove encircling a plurality of terminal pins. There is further a rotary lock shell encircling the complementary connector head, whereby a pair of connector heads will be stably connected. The connector head with an outer thread can be sealed by a guide head cap, which has a rotary lock shell and an inner thread, capable of being engaged with the outer thread, similar to the complementary connector head.
    Type: Application
    Filed: February 22, 2006
    Publication date: August 23, 2007
    Inventor: Li-Chen Liu