NOVELTY - A compound (I) comprising two or more 5-membered hetero rings, is new.    USE - New compound is used as host material, hole transport material, light-emission material, or electron transport material in organic electronic devices e.g. organic electroluminescent device, organic thin film transistor, photodiode, organic laser, and laser diode used in display devices of terminals, and organic solar cells (all claimed).    ADVANTAGE - The new compound is suitable for fluorescence of all colors including red, green, blue, white etc. The compound provides organic electronic devices having excellent luminous efficiency ad chromatic purity.    DETAILED DESCRIPTION - A compound of formula (I) comprising two or more 5-membered hetero rings, is new.    R1-R10,R'1-R'10=H, halo, cyano, alkoxy, thio, optionally substituted 1-50C alkyl (optionally including sulfur, nitrogen, oxygen, phosphorus and/or silicon), optionally substituted 1-50C alkoxy, optionally substituted 1-50C alkenyl, optionally substituted 5-60C arylene, optionally substituted 5-60C aryl, optionally substituted 5-60C heteroaryl (optionally including sulfur, nitrogen, oxygen, phosphorus and/or silicon), or optionally substituted 1-50C aryloxy (optionally including sulfur, nitrogen, oxygen, phosphorus and/or silicon);    X=C or N;and    Ar=H, halo, cyano, alkoxy, thio, optionally substituted 1-50C alkyl (optionally including sulfur, nitrogen, oxygen, phosphorus and/or silicon), optionally substituted 1-50C aryloxy, optionally substituted 1-50C alkenyl, optionally substituted 5-60C arylene, optionally substituted 5-60C aryl, optionally substituted 5-60C heteroaryl (optionally including sulfur, nitrogen, oxygen, phosphorus and/or silicon), or optionally substituted 5-60C heteroaryloxy (optionally including sulfur, nitrogen, oxygen, phosphorus and/or silicon).    INDEPENDENT CLAIMS are included for the following:    (1) organic electronic device consisting of organic layer(s) containing compound (I); and    (2) terminal including a display device, and a controller for operating the display device.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an organic electroluminescent device. (Drawing includes non-English language text)    Substrate (101)    Electrodes (102,108)    Light-emitting layer (105)    Electron transport layer (106)    Electron injection layer (107)