HD66787 Datasheet, PDF (138/159 Pages) Renesas Technology Corp – 528-channel, One-chip Driver with 262,144-color Display RAM and Power Supply Circuit for Low-temperature Poli-Si TFT (LTPS-TFT) Panels with Incorporat

HD66787
Preliminary
AC Timing
The AC timings of frame inversion AC drive and n-raster-row inversion drive are illustrated as follows. In
case of frame inversion AC drive, alternation occurs at the completion of drawing one frame, followed by a
blank, which lasts for 16H periods. In case of n-raster-row, a blank lasting 16H period is inserted after
drawing a full screen.
Frame inversion AC drive
Back porch
Frame 1
AC
timing
Front porch
n-raster-row inversion AC drive
AC timing
AC timing
AC timing
AC timing
AC timing
AC timing
AC timing
AC timing
AC timing
AC timing
AC timing
Back porch
n-raster-rows
n-raster-rows
n-raster-rows
n-raster-rows
n-raster-rows
n-raster-rows
n-raster-rows
n-raster-rows
Front porch
Blank period
= front porch + back porch
= 16H
Blank period
= 16H
AC drive timing
Rev.0.22, May.23.2003, page 138 of 159