A transparent flat panel display device comprising: a substrate, a plurality of data lines (DL1-DL4) arranged in a first direction on the substrate, a plurality of scan lines (SL1, SL2) arranged in a second direction on the substrate, and a plurality of pixels at the intersection of the data lines and scan lines; a plurality of sensing lines arranged in the first direction on the substrate; wherein each pixel area, comprising four sub-pixel areas (P1-P4) and two transparent areas, is disposed between two neighbouring sensing lines; wherein each pixel comprises a switching thin film transistor, a driving thin film transistor, a storage capacitor (Cst), a compensation element and an organic light emitting diode, the compensation element comprising a sensing thin film transistor; a driving current line arranged in the first direction and connected to each driving thin film transistor, each data line connected to a switching thin film transistor of a respective pixel; each sensing line being connected to a sensing thin film transistor of a respective pixel; a plurality of second sensing lines (REFh) running in the second direction on the substrate, the first direction being perpendicular to the second direction, the second sensing lines (REFh) being connected to the first sensing line via a sensing contact hole; wherein each pixel area comprises a first, second, third and fourth emission area corresponding respectively to the four sub-pixel areas (P1-P4); wherein the two transparent areas of each pixel are arranged in the second direction and are both disposed between the data lines connected to the pixel and the neighbouring sensing line on one side of the pixel area; a constant voltage supply means configured to supply a constant voltage to the driving current line; wherein the driving current line is disposed between the data lines connected to the pixel and the neighbouring sensing line on the other side of the pixel area. a substrate, a plurality of data lines (DL1-DL4) arranged in a first direction on the substrate, a plurality of scan lines (SL1, SL2) arranged in a second direction on the substrate, and a plurality of pixels at the intersection of the data lines and scan lines; a plurality of sensing lines arranged in the first direction on the substrate; wherein each pixel area, comprising four sub-pixel areas (P1-P4) and two transparent areas, is disposed between two neighbouring sensing lines; wherein each pixel comprises a switching thin film transistor, a driving thin film transistor, a storage capacitor (Cst), a compensation element and an organic light emitting diode, the compensation element comprising a sensing thin film transistor; a driving current line arranged in the first direction and connected to each driving thin film transistor, each data line connected to a switching thin film transistor of a respective pixel; each sensing line being connected to a sensing thin film transistor of a respective pixel; a plurality of second sensing lines (REFh) running in the second direction on the substrate, the first direction being perpendicular to the second direction, the second sensing lines (REFh) being connected to the first sensing line via a sensing contact hole; wherein each pixel area comprises a first, second, third and fourth emission area corresponding respectively to the four sub-pixel areas (P1-P4); wherein the two transparent areas of each pixel are arranged in the second direction and are both disposed between the data lines connected to the pixel and the neighbouring sensing line on one side of the pixel area; a constant voltage supply means configured to supply a constant voltage to the driving current line; wherein the driving current line is disposed between the data lines connected to the pixel and the neighbouring sensing line on the other side of the pixel area.