Patents by Inventor Seong-Han Yu

Seong-Han Yu 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).

  • Complementary metal-oxide semiconductor (CMOS) image sensor
    Patent number: 8149311
    Abstract: A CMOS image sensor includes a unit pixel including controlled by a high voltage; a reference high voltage generator for generating a reference high voltage; and a high voltage output unit for generating the high voltage by using the reference high voltage as an operating voltage to thereby output the high voltage to the unit pixel, wherein a level of the high voltage is stably maintained regardless of a variations of the reference high voltage level.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: April 3, 2012
    Assignee: Intellectual Ventures II LLC
    Inventor: Seong-Han Yu
  • Complementary metal-oxide semiconductor (CMOS) image sensor
    Patent number: 8139134
    Abstract: A CMOS image sensor includes a unit pixel including controlled by a high voltage; a reference high voltage generator for generating a reference high voltage; and a high voltage output unit for generating the high voltage by using the reference high voltage as an operating voltage to thereby output the high voltage to the unit pixel, wherein a level of the high voltage is stably maintained regardless of a variations of the reference high voltage level.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: March 20, 2012
    Assignee: Intellectual Ventures II LLC
    Inventor: Seong-Han Yu
  • COMPLEMENTARY METAL-OXIDE SEMICONDUCTOR (CMOS) IMAGE SENSOR
    Publication number: 20100194957
    Abstract: A CMOS image sensor includes a unit pixel including controlled by a high voltage; a reference high voltage generator for generating a reference high voltage; and a high voltage output unit for generating the high voltage by using the reference high voltage as an operating voltage to thereby output the high voltage to the unit pixel, wherein a level of the high voltage is stably maintained regardless of a variations of the reference high voltage level.
    Type: Application
    Filed: April 21, 2010
    Publication date: August 5, 2010
    Inventor: Seong-Han Yu
  • CMOS image sensor
    Publication number: 20070146517
    Abstract: A CMOS image sensor includes a unit pixel including controlled by a high voltage; a reference high voltage generator for generating a reference high voltage; and a high voltage output unit for generating the high voltage by using the reference high voltage as an operating voltage to thereby output the high voltage to the unit pixel, wherein a level of the high voltage is stably maintained regardless of a variations of the reference high voltage level.
    Type: Application
    Filed: December 28, 2005
    Publication date: June 28, 2007
    Applicant: MagnaChip Semiconductor Ltd.
    Inventor: Seong-Han Yu
  • Optical alignment composition, alignment layer formed using the same and LCD having the alignment layer
    Patent number: 6066696
    Abstract: An optical alignment composition including a first polymer selected from a cinnamate-series polymer and a coumarin-series polymer, and a second polymer selected from polyimide having a long-chain alkyl group at its side chains and polyimide having an alkyl group at its both ends, an alignment layer formed using the same, and a liquid crystal display having the alignment layer are provided. According to the present invention, the thermal stability of the alignment layer and pretilt angle characteristic of the liquid crystal are improved.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: May 23, 2000
    Assignee: Samsung Display Devices Co. Ltd.
    Inventors: Han-sung Yu, Seong-han Yu
  • Optical alignment polymer and optical alignment composition having the same
    Patent number: 6048928
    Abstract: An optical alignment polymer and an optical alignment composition having the same are provided. The optical alignment polymer has a compound selected from the group consisting of poly(maleimide), poly(vinyl acetal), poly(phenylene oxide), poly(maleimide styrene) and their derivatives in its main chain, and a photosensitive group at its side chain. The optical alignment polymer can have high level of optical alignment performance and high thermal stability.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: April 11, 2000
    Assignee: Samsung Display Devices, Co., Ltd.
    Inventors: Han-sung Yu, Kwan-young Han, Seong-han Yu, Yong-kyu Jang, Byung-hoon Chae, Jang-kun Song
  • Optical alignment polymer, alignment layer formed using the same and liquid crystal display device having the alignment layer
    Patent number: 5925423
    Abstract: An optical alignment polymer having an optical aligning functional group simultaneously introduced into its main chain and side chain, an alignment layer formed using the optical alignment polymer and a liquid crystal display device having the alignment layer are provided. The optical alignment polymer has excellent alignment performance and stability against heat or impact.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: July 20, 1999
    Assignee: Samsung Display Devices Co., Ltd
    Inventors: Kwan-young Han, Seong-han Yu