"In this work, a new and simple OLED architecture enables to get good white CIE coordinates (0.29, 0.35) is presented. Two OLEDs architectures were tested, the first one was ITO / PEDOT: PSS / EML / PFN/ Ca-Ag (OLED-1) and the second ITO / PEDOT: PSS / EML / BPhen / Ca-Ag (OLED-2), where the copolymer Poly [(9,9-dioctylfluorenyl-2,7-diyl) -co- (N, N'-diphenyl ) -N, N'-di (pbutylphenyl) -1,4 diamino-benzene)] was employed as the emissive layer (EML), the PEDOT: PSS was utilized as the hole transport layer (HTL) and the compounds PFN and BPhen as the electron transport layers (ETL). With OLED-1 the emission was blue light, due only at the emissive layer and with OLED-2 white light was obtained from the mixture of the EML and exciplex emissions. The turn-on of the devices was of 4 V and the maximum luminance was of 4100 cd/m2 at 7 V. We used ablation laser technique on the anode (ITO ) to delimited the emission area. the area of as OLED was of 0.9 mm2. The lifetime of our devices with evaporate cathode (Ca-Ag) using T50 parameter (where the luminance decreases at 50%) was of 400 hours with encapsulating process while that OLEDs without encapsulated the lifetime was less of 30 hours. The laser ablation was used to delimit the OLED patters."