LP156WFD(SP)(Y1) LP156WFD-SPY1. Lp156wfd-spz1 Lp156wfd-(sp)(z1). LP156WFD(SP)(Z1). Ghost Touch, Running Touch, No-Touch, and Inverted Touch are not screen related issues. LP156WFA(SP)(G1) LP156WFA(SP)(G2) LP156WFA-SPG2 EDID LGD05F7.