NOVELTY - An arylamino compound (I) is new.    USE - New arylamino compound is used for organic electronic element e.g. organic electroluminescent device, organic solar cell, organophotoreceptor drum, organic thin-film transistor, photodiode, organic laser and laser diode for terminal (all claimed).    ADVANTAGE - The organic electronic element containing the arylamino compound has excellent luminous efficiency and durability, and low drive voltage.    DETAILED DESCRIPTION - An arylamino compound of formula (I), is new.    R1-R4 = H, halo, cyano, 4-60C aryl optionally comprising hetero atom chosen from S, N, O, P and Si and optionally substituted by optionally substituted amino of formula: -N(R5)2 (I) or -N(R5)(R6) (II), or 1-50C alkyl optionally comprising hetero atom chosen from S, N, O, P and Si, 1-50C alkoxy, 1-50C alkylthiol, 6-50 arylthiol, 2-50C alkenyl, 6-50C arylene optionally comprising hetero atom chosen from S, N, O, P and Si, amino (I) or (II), or 3-50C alkenyl comprising hetero atom chosen from S, N, O, P and Si (all optionally substituted);    R5, R6 = 1-50C alkyl optionally comprising hetero atom chosen from S, N, O, P and Si, 2-50C alkenyl optionally comprising hetero atom chosen from S, N, O, P and Si, 6-50C arylene, 4-60C aryl optionally comprising hetero atom chosen from S, N, O, P and Si, or 2-50C arylene comprising hetero atom chosen from S, N, O, P and Si (all optionally substituted);    Ar1-Ar3 = 2-50C alkenyl optionally comprising hetero atom chosen from S, N, O, P and Si, 6-50C arylene optionally comprising hetero atom chosen from S, N, O, P and Si, 6-60C aryl optionally comprising hetero atom chosen from S, N, O, P and Si, or 4-60C aryl optionally substituted by optionally substituted amino (I) or (II) (all optionally substituted);    X = N, O, S, Si or P;    Y' = C, N, O or S;    n = 0-4; and    m = 1-3.    INDEPENDENT CLAIMS are included for the following:    (1) an organic electronic element having organic layer including a compound of formula (I); and    (2) a terminal comprising a display device, and a display device controller including the organic electric device.