Source driver and display device including the same

A source driver having a small layout area and low power consumption includes a signal generation block generating a plurality of pulse width modulation (PWM) signals and a plurality of staircase waveform grayscale voltage signals according to a digital code generated based on an oscillation signal...

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Bibliographic Details
Main Authors KIM, SI-WOO, KANG, JAE-SUNG, KIM, HYO-JIN, KIM, JONG-HYUN
Format Patent
LanguageChinese
English
Published 16.12.2009
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 source driver having a small layout area and low power consumption includes a signal generation block generating a plurality of pulse width modulation (PWM) signals and a plurality of staircase waveform grayscale voltage signals according to a digital code generated based on an oscillation signal and a channel driver. The channel driver divides latched video data into upper bits and lower bits, generates a plurality of switching signals using one PWM signal selected from among the plurality of PWM signals in response to the lower bits, outputs one staircase waveform grayscale voltage signal selected from among the plurality of staircase waveform grayscale voltage signals in response to the upper bits, and outputs a particular grayscale voltage level included in the one staircase waveform grayscale voltage signal in response to the plurality of switching signals.
Bibliography:Application Number: TW20090113510