Patents by Inventor Joo Cho

Joo Cho 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: 20060285362
    Abstract: A backlight assembly and a liquid crystal display device can discharge heat from the lamp unit to the outside or effectively dissipate the heat. The backlight assembly of the present invention includes a lamp unit, a receiving member for receiving the lamp unit, a first heat dissipation member disposed below the receiving member, and a second heat dissipation for wrapping around a lateral side of the receiving member and the first heat dissipation member. The lamp unit is disposed on an area corresponding to the lateral side of the receiving member. In one embodiment, the first heat dissipation member is a flat plate made of graphite and disposed on an outer side of the bottom of the receiving member. The second heat dissipation member is metal with good thermal conductivity in close contact with the first heat dissipation member and the lateral side of the receiving member where the lamp unit is disposed.
    Type: Application
    Filed: January 20, 2006
    Publication date: December 21, 2006
    Inventors: Joo Cho, Sang Lee, Gi Kim, Chun-Ho Song, Sang Lee, Seock Kang
  • Publication number: 20050243615
    Abstract: Disclosed is a buffer device for a clock enable signal in a memory device that is used when the memory device escapes from a self-refresh mode. The buffer device includes a first buffer for comparing a clock enable signal with an external reference voltage in accordance with a self-refresh flag signal, a second buffer for outputting a signal corresponding to the self-refresh flag signal as the clock enable signal, a comparator for comparing the external reference voltage applied from an outside with an internal reference voltage internally generated, and a switching unit for selecting and outputting an output of the first buffer if the external reference voltage is higher than the internal reference voltage and selecting and outputting an output of the second buffer if the external reference voltage is lower than the internal reference voltage in accordance with an output signal of the comparator.
    Type: Application
    Filed: October 12, 2004
    Publication date: November 3, 2005
    Inventor: Joo Cho