Ascii characters

Hai,

If I lcd.print"""; do ,i get " disin place ( oke)
If I lcd.print"\"; do ,i get a chinese character , a Y with a = in it

If I lcd.print((Char)92) do , i get a chinese character ( 92 = \ )

I work with Arduino uno or Mega 2560, a HD44780 lcd 4x20 lines

Kind Regards