SHIFT REGISTER AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME

A shift register and a liquid crystal display device using the same are provided to restrain degradation of a pull-down transistor by reducing a high voltage sustain period of a node for controlling the pull-down transistor. A shift register includes first and second stages(51,52). The first stage c...

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Bibliographic Details
Main Authors CHAE, JI EUN, MOON, SU HWAN, KIM, DO HEON
Format Patent
LanguageEnglish
Published 21.05.2008
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CRYPTOGRAPHY
DISPLAY
EDUCATION
PHYSICS
SEALS
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Summary:A shift register and a liquid crystal display device using the same are provided to restrain degradation of a pull-down transistor by reducing a high voltage sustain period of a node for controlling the pull-down transistor. A shift register includes first and second stages(51,52). The first stage charges/discharges a first node(QA) using a first controller so that a first output terminal is charged to a first node voltage. The first stage charges/discharges second and third nodes(QBOA,QBEA) using second and third controllers so that the first output terminal is discharged to second and third node voltages. The second stage includes a fourth node(QB), a fifth node(QBOB), and a sixth node(QBEB). The second stage charges/discharges a fourth node using a fourth controller so that a second output terminal is charged to a fourth node voltage. The second stage charges/discharges the fifth and sixth nodes using fifth and sixth controllers so that the second output terminal is discharged to fifth and sixth node voltages.
Bibliography:Application Number: KR20060113347