The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent device having improved driving voltage and/or current efficiency characteristics can be provided by comprising the organic electroluminescent compound according to the present disclosure.

The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent device having improved driving voltage and/or current efficiency characteristics can be provided by comprising the organic electroluminescent compound according to the present disclosure.

An organic electroluminescent element including a substrate, a pair of electrodes including an anode and a cathode, disposed on the substrate, and at least one organic layer including a light emitting layer, disposed between the electrodes, in which at least one kind of compound represented by the following general formula is contained in any layer of the at least one organic layer, is an organic electroluminescent element, in which the generation of dark spots during driving is inhibited: ##STR00001##

An organic electroluminescent element including a substrate, a pair of electrodes including an anode and a cathode, disposed on the substrate, and at least one organic layer including a light emitting layer, disposed between the electrodes, in which at least one kind of compound represented by the following general formula is contained in any layer of the at least one organic layer, is an organic electroluminescent element, in which the generation of dark spots during driving is inhibited: ##STR00001##

An organic EL device includes a first emitting layer and a second emitting layer, in which the first emitting layer contains a first host material, the second emitting layer contains a second host material, the first and the second host material are mutually different, the first emitting layer and the second emitting layer at least contains a compound that emits fluorescence having a main peak wavelength of 500 nm or less, respectively, the compound contained in the first emitting layer and that emits fluorescence having a main peak wavelength of 500 nm or less is the same as or different from the compound contained in the second emitting layer, and a triplet energy T.sub.1(H1) of the first host material and a triplet energy T.sub.1(H2) of the second host material satisfy a numerical formula (Numerical Formula 1),

T.sub.1(H1)>T.sub.1(H2)  (Numerical Formula 1).

An organic EL device includes a first emitting layer and a second emitting layer, in which the first emitting layer contains a first host material, the second emitting layer contains a second host material, the first and the second host material are mutually different, the first emitting layer and the second emitting layer at least contains a compound that emits fluorescence having a main peak wavelength of 500 nm or less, respectively, the compound contained in the first emitting layer and that emits fluorescence having a main peak wavelength of 500 nm or less is the same as or different from the compound contained in the second emitting layer, and a triplet energy T.sub.1(H1) of the first host material and a triplet energy T.sub.1(H2) of the second host material satisfy a numerical formula (Numerical Formula 1),

T.sub.1(H1)>T.sub.1(H2)  (Numerical Formula 1).

A compound represented by the following formula (1A) or (1B):

##STR00001##

(the symbols in the formulae (1A) and (1B) have the same meaning as defined in the specification), an organic electroluminescent device containing the compound, and an electronic device including the organic electroluminescent device.

A compound represented by the following formula (1A) or (1B):

##STR00001##

(the symbols in the formulae (1A) and (1B) have the same meaning as defined in the specification), an organic electroluminescent device containing the compound, and an electronic device including the organic electroluminescent device.

A compound is represented by a formula (20) below. In the formula (20), a least one pair of a pair of X.sub.21 and X.sub.22, a pair of X.sub.22 and X.sub.23 and a pair of X.sub.23 and X.sub.24 are carbon atoms to be bonded to the structure represented by the formula (20a), ##STR00001##

A compound is represented by a formula (20) below. In the formula (20), a least one pair of a pair of X.sub.21 and X.sub.22, a pair of X.sub.22 and X.sub.23 and a pair of X.sub.23 and X.sub.24 are carbon atoms to be bonded to the structure represented by the formula (20a), ##STR00001##