the u03b1 npd layer 50 nm the alq3 layer 60 nm the lif layer 0 5 nm the al layer 0 6 nm the ag layer 15 nm the teo 2 layer 40 nm the ag layer on top of the glass substrate and the ito deposited thereon could be used as the anode the u03b1 npd layer could be the organic hole transport layer the alq3 layer could be the organic electron transport layer and the green fluorescence emitting layer the lif layer 0 5 nm the al layer 0 6 nm the ag layer 15 nm the teo 2 layer 40 nm could be the transparent cathode the anode including the ag layer and the ito layer deposited thereon is used as the reflection anode the light of the oled is emitted from the top transparent cathode fig6 shows the electric characteristic curves of the aforementioned oled fig7 shows el spectra with different view angles of the aforementioned oled wherein the peak values have been normalized it can be seen that even the view angle reaches 60 u00b0 off the surface normal there is still no obvious changes in the spectrum and the hue is still green which is the original hue of the alq3 while the aforementioned oled is tested it is found that the lateral conductivity of the extremely thin ito layer is very low therefore even though the ito is deposited completely without patterning there is still no crosstalk occurred between two adjacent oleds in other words it is possible to omit the patterning process for the ito layer.