NOVELTY - A dibenzothiophene and arylamine derivative compound (1) is new.    USE - New dibenzothiophene and arylamine derivative compound for use in an organic electric device such as organic electro luminescence device e.g. organic LED (OLED), organic solar cell, organophotoreceptor (OPC) drum and organic thin film transistor, of a display device (all claimed).    ADVANTAGE - The organic layer of the device is made of the derivative compound, thus manufacturing the device in a better manner.    DETAILED DESCRIPTION - A dibenzothiophene and arylamine derivative compound of formula (1) is new.    A = formula (i) or (ii);    Ar1 = 3-40C heterocycle or 6-60C aryl (all optionally substituted);    R1 = H, halo, 6-60C aryl optionally substituted with deuterium, 1-60C alkyl, 1-60C alkoxy, 1-60C alkylamine, 6-60C arylamine, 1-60C alkylthio, 6-60C arylthio, 2-60C alkenyl, 2-60C alkynyl, 3-60C cycloalkyl, 8-60C arylalkenyl optionally substituted by silane, boron or germanium group,5-60C heterocycle optionally substituted by halogen, CN, NO2, 6-60C alkyl, 1-60C alkoxy, 1-60C alkylamine, 6-60C arylamine, a 1-60C alkylthio, 6-60C arylthio,2-60C alkenyl, 2-60C alkynyl, 3-60C cycloalkyl, 8-60C arylalkenyl optionally substituted by silane, boron or germanium group;    L1 = bond, or arylene, heteroarylene or divalent aliphatic hydrocarbyl (all optionally substituted);    X = bond, (CR'R")k, (SiR'R")k, -O- or NR';    k = 1-10;    n = 1-3, and    R, R', R'' = H, CN, NO2, OH, carboxylic group, 6-60C aryl, 1-50C alkyl, 1-50C alkoxy, 1-60C alkyl, 7-50C arylalkyl, 1-60C alkyl, 6-50C aryloxy, 5-50C arylthio or 1~50C alkoxycarbonyl, and adjacent R, R' and R'' may form a ring together;    rings a, b = 1-3 aromatic rings.    INDEPENDENT CLAIMS are also included for the following:    (1) an organic electric device comprising a base that is made of dibenzothiophene and arylamine derivative compound    (2) a display device comprising a terminal and a controller for operating the display device.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an organic electro luminescence device. '(Drawing includes non-English language text)'