A light emitting device includes an emissive substance between {HEAD ~ an anode} and cathode that emits light upon application of {TAIL ~ electrical energy} 
A light emitting device includes an emissive substance between { HEAD ~ an anode } and cathode that emits light upon application of { TAIL ~ electrical energy }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL