It appears that this LCD module is meant to be attached to a PCB with very thin double-sticky tape (the D.S.T. abbreviation in the drawing) - if I am reading the drawing correctly, then it says that the thickness of the DST is only 0.05 mm. Such a tiny gap between the LCD module and the application PCB is possible because the LCD's FPC connection tail is soldered down rather than connectorized.
Now the really strange part is that some other LCD modules out there have FPC tails that are meant to go into a ZIF connector (not soldered down like this one), yet they still somehow expect the LCD to sit flat against the application PCB, even though the thinnest FPC connector I could find (Hirose FH33 series) takes up 1.20 mm of vertical space (height above PCB). I still haven't figured out how those are supposed to be mounted - but your LCD and other LCDs with solder-down tails are easy in comparison.