{TAIL ~ The period} of the effective wavelength degree makes possible effective interference with the light emitted from the organic EL layer and improves the light extraction efficiency of {HEAD ~ the organic EL} light emitting device 
{ TAIL ~ The period } of the effective wavelength degree makes possible effective interference with the light emitted from the organic EL layer and improves the light extraction efficiency of { HEAD ~ the organic EL } light emitting device
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH