HD66781 Datasheet, PDF (182/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Preliminary
5.
Frame frequency setting
Frame frequency adjusting functions (with DIVI, RTNI bits) allows changing liquid crystal alternating
frequency through instructions. Frame frequency can be reduced to achieve low power consumption while
display method with low power consumption such as partial display mode is employed. See “Frame
Frequency Adjustment Function”(p.178) section for details.
Generally, the lower frame frequency and the quality of display are in trade-off. The power-saving effects
and the quality of display also vary depending on the characteristics of a panel. Check the quality of
display on the panel before use.
6.
Liquid crystal alternating drive
The HD66781 allows selecting among frame alternating drive, 3-field interlace drive, and line inversion
alternating drive through instructions (B/C, EOR, NW, and FLD). Select an appropriate alternating drive
method for the kind of display. See the “Alternating Timing”(p.177) section for details.
Generally, the lower frame frequency and the quality of display are in trade-off. The power-saving effects
and the quality of display also vary depending on the characteristics of a panel. Check the quality of
display on the panel before use.
Rev.0.5, July.31.2003, page 182 of 196