We have fabricated white polymeric light-emitting devices (WPLEDs) from poly-fluorene-based (PFO) blue and MEH-PPV polymer blending systems. A device structure of ITO/PEDOT:PSS/Blending polymer/Blue polymer/LiF/Al was employed. This double emissive structure results in the significant improvement of white color shift phenomenon. A current efficiency of 4.67ed/A (3,900 cd/m(2), 6.4V) and a brightness value of 17,600 cd/m(2) at 9.4 V with (0.34, 0.35) CIE coordinates at 5 V and (0.29, 0.29) at 9 V were obtained.