NOVELTY - A naphthyl carbazole derivative-containing compound (1) is new.    USE - Naphthyl carbazole derivative-containing compound for organic material layers such as hole injection layer, hole transport layer, light emitting layer, electron transport layer and electron injection layer of organic electric device for e.g. organic electroluminescent device, organic solar cell, organophotoreceptor drum and organic thin film transistor, for display device used in terminal (all claimed) such as wire/wireless communication terminal used for personal digital assistant (PDA), electronic dictionary, portable media player (PMP), remote control, navigation, game console, television, computers and mobile communications terminal such as cellular phone terminal.    ADVANTAGE - The naphthyl carbazole derivative-containing compound lowers the driving voltage of the device and improves the stability of the device.    DETAILED DESCRIPTION - A naphthyl carbazole derivative-containing compound is of formula (1).    R1-R4=H, deuterium, halogen, CN, NO2, (un)substituted1-60C alkyl, 1-60C aryl, 1-60C alkoxy, 1-60C alkyl amine, 1-60C aryl amine, 1-60C alkyl thio, 2-60C alkenyl, 1-60C alkyl thiophene, 6-60C thiophene, 2-60C alkenyl, 2-60C alkynyl, 3-60 cyclo alkyl, (un)substituted 6-60C aryl, 6-60C aryl alkenyl, (un)substituted silane, (un)substituted boron, (un)substituted germanium, (un)substituted 5-60C heterocyclic, (un)substituted aliphatic hydrocarbon, (un)substituted aryl and (un)substituted heteroaryl, where R1-R4 combine with adjacent groups to form a ring;    Ar1,Ar2=(un)substituted alkyl or 1-60C (un)substituted heteroaryl;and    D=(un)substituted 2-60C alkylene, (un)substituted 1-60C alkenylene, (un)substituted 5-60C arylene, (un)substituted 2-60C heteroarylene and (un)substituted 2-60C hetero ring.    INDEPENDENT CLAIMS are also included for the following:    (1) an organic electric device comprising one or more organic material layers containing the naphthyl carbazole derivative-containing compound of formula (1)    (2) a terminal equipped with a display device comprising the organic electric device and a controller 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).    Hole injection layer (103)    Hole transport layer (104)    Light emitting layer (105)    Electron injection layer (106)    Electron transport layer (107)