HD66787 Datasheet, PDF (104/159 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
Low-temperature poli-Si TFT Panel Control
HD66787 outputs timing signals (FLM, CL1, SFTCLK) for controlling low-temperature poli-Si TFT
(LTPS-TFT) panels with incorporated gates. By level-shifting the voltage of FLM, CL1, SFTCLK, and
DISPTMG, the LTPS-TFT panel with incorporated gates becomes easily controllable.
■ Source drivers (HD66787)
• Output control timing signals (internal signal)
FLM (Frame heading pulse)
CL1 (Line cycle signal): “Low” width
variable with CLW2-0 bits
SFTCLK (Line cycle signal): output timing
variable with STG2-0, SHW1-0 bits
• Level-shift output
VGH ~ VGL amplitude
• ports for LTPS
SOUT 11, SOUT 12, SOUT 13, SOUT 14,
SOUT 21, SOUT 22, SOUT 23, SOUT 24
176 pixels x 3
240
G1
G2
Low-temperature
poli-Si (LTPS) TFT
with incorporated
gates
G239
G240
SOUT21
SOUT22
SOUT23
SOUT24
Level
shift
HD66787
VGH, VGL
Shift
Register
Driver circuits
for incorporated
gates
SOUT11
SOUT12
SOUT13
SOUT14
4
Vcom
Power supply
Circuit
Vcom
Level
Shift
DCDC
18 4
3
18 _{4 Vcc GND Vci1 Vci}
RESET ^DB17-0
IM2,IM1, VLD _PD17-0
IMO/ID
CS*, WR*
RD*, RS
VSYNC
HSYNC
DOTCLK
ENABLE
System configuration
Rev.0.22, May.23.2003, page 104 of 159