Hello!
Just to add to what FvM said. There are TFT LCDs with an internal driver chip. This chip provides usually
enough memory for one screen, and handles everything for you.
If you look at the specs, that kind of LCD will not have the HSYNC, VSYNC and DCLK lines, but WR, RD
DATA/CMD etc... instead. So if you want to buy a color LCD that you can drive with a microcontroller,
look at the pinout and try to get info about the driver. Once you get that, you can safely buy one sample.
Dora.