Hello! I’d like to add some comments regarding this display.
I got it from DX last week, like others. After fiddling couple of long unsuccesful evenings with this display showing only white screen on different boards (clones - Duemilanove, Uno, Mega1280), sometimes this white screen seemed to blink - actually white lines were alternating odds/evens, I noticed, that some days ago one buyer left review for this particular screen model in the same auction ID, which I bought, saying that it is ILI9341 chip in LCD and he succesfully used Adafruit’s TFTLCD library.
But still I couldnt get it to work with this library using LCD controller auto-detection.
In my case auto detection started to work, when I uncommented in Adafruit_TFTLCD.cpp file lines 878 to 883 (the first FOR cycle in “uint16_t Adafruit_TFTLCD::readID(void)” function) - then it auto-detected chip and started to work.
Also display works if I forcefully assign ID of this particular display e.g. 0x9341. I guessed, that this LCD controller needed some kind of “push” for reading full memory - strange.
My guess, that this display from “mcufriend” lacks some filtering capacitors on power lines from arduino board, hence artifacts like those lines on half of display and unstable detection on some copies. My display shows such lines, when I power 'duinos from exrternal battery or power supply, but works without artifacts from USB. I’ll try to add some later and see if it changes something.
Note: disconnecting touch panel does not affect those white lines, although touch panel uses some data pins from duino - tried that.
Also there is free unpopulated connector labeled CON1 but without pinout markings. It turns out it is only 3.3v tolerant pinout and here I give You what I found out using multimeter (GND and 3.3V pins You can find easily with multimeter)
Look from bottom side as You can read shield name and website name (like in OP photo up):
|<- edge of board
LCD_D7 o o LCD_D6
LCD_D5 o o LCD_D4
LCD_D3 o o LCD_D2
LCD_D1 o o LCD_D0
LDC_WR o o LCD_RD
LCD_CS o o LCD_RS
SD_SS o o SD_SCK
SD_DO o o SD_DI
3v3 o o GND
Onboard 3.3v stabilizer U1 is only for
SD card LCD
Hope this helps someone.