| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an organic light-emitting display device using a plurality of organic light-emitting elements of different luminescent colors and extending the service life of the organic light-emitting elements of luminescent colors of short life characteristics. <P>SOLUTION: A hole injection layer 7, an α-NPD vapor deposited film 8, an n-doped electron transportation layer 11 and a p-doped hole transportation layer 12 which are patterned to the same size as a B sub-pixel, a DNA vapor deposited film 13, an electron injection layer 14 and an upper electrode 15 are formed on a lower electrode 5 in the B sub-pixel. The α-NPD vapor deposited film 8 and the DNA vapor deposited film 13 function as a blue light-emitting layer and exhibit series-connected characteristics of a blue light-emitting element comprising a lower electrode 5, a hole injection layer 7, an α-NPD vapor deposited film 8 and an n-doped electron transportation layer 11, and a blue light-emitting element comprising a p-doped hole transportation layer 12, a DNA vapor deposited film 13, an electron injection layer 14 and an upper electrode 15. A current value required for certain brightness can thereby be lowered, and the service life can be extended. <P>COPYRIGHT: (C)2010,JPO&INPIT |
