1.44" ST7735 TFT on MEGA 2560

I have a TFT which has 11 pins: from above, VCC, GND, GND, NC, NC, LED, CLK, SDI, RS, RST, CS. (http://www.ecyberspaces.com/productsview.asp?id=6355) I tried to connect it to my MEGA 2560, but I failed and the screen is always white.

Which pins I have to take? I want to know what will be TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST.

Check this post

And check out the Arduino SPI reference to see what are the corresponding pins for a mega

Post a link to the actual Ebay sale. Or an accurate photo.

By the sound of it, your pins will line up with VCC on 5V, LED on A0 pin, .. CS on A5 pin of a Uno, Mega, ... i.e. the header male pins mate naturally with the female header sockets.

The SPI interface is bit-banged on the A0-A5 pins. Most libraries have two types of constructor e.g. hardware SPI and bit-banged SPI.

Yes, you can manually wire up to the hardware pins. It is not worth the bother.

Note that your display has probably got a 5V to 3.3V buffer chip. Unfortunately it works as write-only. You can not read from the TFT controller registers or memory.