| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an organic light emitting element array which does not raise a power source voltage. <P>SOLUTION: A difference in ionization potential between a host material and a hole transport layer, and a difference in electronic affinity between the host material and an electronic transport layer, are respectively set to be within a preferable range concerning whole organic light emitting elements for emitting different colors. <P>COPYRIGHT: (C)2008,JPO&INPIT |
