Birch, Stewart, Kolasch & Birch
Electroluminescent element
 Disclosed is an electroluminescent element comprising an anode, a cathode and, disposed therebetween, an organic luminescent layer comprising a mixture of a fluorescent luminescent agent, at least one hole moving and donating agent capable of moving holes and donating the same to the luminescent agent and at least one electron moving and donating agent capable of moving electrons and donating the same to the luminescent agent. In the element, the components of the luminescent layer have specific oxidation potential and reduction potential relationships. The element emits light in response to electrical signals. The element exhibits high luminescence efficiency and brightness even at low voltages, and it can efficiently be produced at low cost. 
Asashi Kasei Kogyo Kabushiki Kaisha
H H H H Y H H H H H H C H H H
H05B H01L H01L H01L Y10S H01L H01L H01L H01L H01L H01L C09K H01L H01L H01L
inventional additional additional additional additional additional additional additional inventional additional additional inventional additional additional additional
Hiroshi Yoshihiko
Endo Mori