摘要： In electrochemistry, the carbazole generally coupled to dimer but not polymer. This work has reported that organic electropolymerzation (OEP) of 4,4',4"-Tri(N-carbazolyl)triphenylamine (TCTA) would form high crosslinked carbazole polymer by its high activity/reversibility and a synchronous viscosity control. It has significantly improved the OEP film quality of both holes transporting and electroluminescent layers in organic light emitting diodes. As a result, the conductivity and power efficiency of the organic light emitting diodes with TCTA are eight and four times of that without TCTA. A prototype display device with 1.7 inch monochrome passive matrix of 58 ppi under driving chip is successfully fabricated with accurate pixel size and uniform electroluminescence, which makes the big potential of organic electropolymerzation in the electroluminescent application.