Patents by Inventor Kyune-hee Lee

Kyune-hee Lee 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).

  • Thin-film transistor liquid crystal display devices that generate gray level voltages having reduced offset margins
    Patent number: 6331847
    Abstract: TFT-LCD devices having improved data line driver circuits therein comprise an follower amplifier which drives a data line of a panel “hard” during a first portion of a selection time interval (when a strong pull-up or pull-down is required) and a transmission gate which performs a “soft” pull-up or pull-down of the data line to a desired gray level voltage during a second portion of the selection time interval. The “soft” pull-up or pull-down can be utilized to reduce the offset margins of gray level voltages to within ±5 mV.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: December 18, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-oon Kim, Kyune-hee Lee