Patents by Inventor Hee-Jong Park

Hee-Jong Park 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).

  • Publication number: 20240405119
    Abstract: Disclosed is a silicon carbide power semiconductor device and, more particularly, a silicon carbide power semiconductor device capable of improving on-resistance characteristics by contacting at least one lowermost surface of a base or a source with an underlying JFET region.
    Type: Application
    Filed: July 25, 2023
    Publication date: December 5, 2024
    Inventors: Seung Hyun KIM, Hee Bae LEE, Jae Yuhn MOON, Gyu Hyun JUNG, Soon Jong PARK
  • Publication number: 20220056264
    Abstract: A non-painted thermoplastic resin composition including viscose rayon so as to embody a marble pattern and a method for making it are disclosed. The viscose rayon is included in the thermoplastic resin composition to minimize the deterioration of physical properties while minimizing weld lines and flow marks during an extrusion process, and a luxurious outer appearance of a marble pattern is embodied without additional post-processing or painting process. The non-painted thermoplastic resin composition includes 80-90 parts by weight of a thermoplastic resin composition, 0.1-5 parts by weight of a carbon fiber, and 0.1-3 parts by weight of viscose rayon based on 100 parts by weight of the entire resin composition. The viscose rayon provides an effect of minimizing weld lines and flow marks during injection, improving physical properties, and providing the luxurious appearance of the marble pattern.
    Type: Application
    Filed: September 23, 2019
    Publication date: February 24, 2022
    Applicant: CEPLA CO., LTD.
    Inventors: Chang Won CHAE, Sung Yeon LEE, Chang Min HONG, Jin Young HUH, Kyu Haeng CHO, Dae Keun KIM, Gwang Ho GO, Moon Young LEE, Hyuk Soo KWON, Hee Jong PARK, Yeung In KIM
  • Patent number: 8314764
    Abstract: An amplifying circuit of a display device including a plurality of pixels includes an input unit, a bias unit, and an output unit. The input unit is coupled between a first power source for supplying a first voltage and a second power source for supplying a second voltage, receives a first input signal and a second input signal, and is controlled by the first and second input signals. The bias unit receives a bias voltage for operating the input unit, and includes a first node and a second node controllable by the input unit. The output unit applies an output voltage to a pixel by using a first output transistor turned on/off by a signal applied to the first node and a second output transistor turned on/off by a signal applied to the second node, and the first output transistor is a different type to the second output transistor.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: November 20, 2012
    Assignee: MC Technology Co., Ltd.
    Inventors: Byung-Doo Kim, Hee-Jong Park, Ju-Young No, Sang-Hoon Lee
  • Patent number: 8294657
    Abstract: The present invention relates to a liquid crystal display, a driving device thereof, a digital to analog converter, and an output voltage amplifying circuit.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: October 23, 2012
    Assignee: MC Technology, Co., Ltd.
    Inventors: Byung-Doo Kim, Hee-Jong Park, Ju-Young No, Sang-Hoon Lee
  • Publication number: 20100231577
    Abstract: An output voltage amplifier, and a driving device of a liquid crystal display using the same are disclosed. The output voltage amplifier includes: an amplifying unit to generate first and second signals corresponding to a gray voltage input to a first input terminal and a feedback signal input to a second input terminal, and to output a first voltage by using first and second switches driven to be on or off according to the first and second signals; an output unit to apply the first and second data signals to the first and second pixels by using third and fourth switches turned on or off according to the first and second signals; and a feedback circuit unit to selectively supply one of the first voltage and the first and second data signals to the second input terminal. Heating characteristics and a slew rate can be improved.
    Type: Application
    Filed: October 2, 2008
    Publication date: September 16, 2010
    Applicant: MC TECHNOLOGY CO., LTD.
    Inventors: Byung-Doo Kim, Hee-Jong Park, Ju-Young No
  • Publication number: 20100134528
    Abstract: The present invention relates to a liquid crystal display, a driving device thereof, a digital to analog converter, and an output voltage amplifying circuit.
    Type: Application
    Filed: June 24, 2008
    Publication date: June 3, 2010
    Applicant: MC Technology Co., Ltd.
    Inventors: Byung-Doo Kim, Hee-Jong Park, Ju-Young No, Sang-Hoon Lee
  • Publication number: 20100134462
    Abstract: An amplifying circuit of a display device including a plurality of pixels includes an input unit, a bias unit, and an output unit. The input unit is coupled between a first power source for supplying a first voltage and a second power source for supplying a second voltage, receives a first input signal and a second input signal, and is controlled by the first and second input signals. The bias unit receives a bias voltage for operating the input unit, and includes a first node and a second node controllable by the input unit. The output unit applies an output voltage to a pixel by using a first output transistor turned on/off by a signal applied to the first node and a second output transistor turned on/off by a signal applied to the second node, and the first output transistor is a different type to the second output transistor.
    Type: Application
    Filed: June 24, 2008
    Publication date: June 3, 2010
    Applicant: MC Technology Co., Ltd.
    Inventors: Byung-Doo Kim, Hee-Jong Park, Ju-Young No, Sang-Hoon Lee