An organic semiconductor element in which an organic semiconductor layer contains a compound of Formula (1), a compound of Formula (2), and/or a compound of Formula (3) or contains a polymer having a structure of any one of formed by Formulae (8) to (10):

##STR00001##

in which X.sup.1 represents a nitrogen atom or CR.sup.a, and rings A to B each represent a specific nitrogen-containing ring; Y.sup.1 represents an oxygen atom, a sulfur atom, CR.sup.b.sub.2, or NR.sup.c; V.sup.1 represents NR.sup.d, an oxygen atom, a sulfur atom, or a selenium atom; R.sup.a to R.sup.d each represent a hydrogen atom or a substituent; R.sup.1 represents a specific substituent, and p is an integer of 0 to 2; n represents 1 or 2; and * represents a bonding site.

An organic semiconductor element in which an organic semiconductor layer contains a compound of Formula (1) and/or a compound of Formula (2) or contains a polymer having a structure of any one of Formulae (9) and (10):

##STR00001## in which X.sup.1 represents a nitrogen atom or CR.sup.a, rings A to D each represent a specific aromatic ring or an aromatic heterocyclic ring; Y.sup.1 represents an oxygen atom, a sulfur atom, CR.sup.b.sub.2, or NR.sup.c; R.sup.a to R.sup.c each represent hydrogen atoms or substituents; R.sup.1 and R.sup.2 each represent a to specific substituent; n represents 1 or 2; and * represents a bonding site.

Provided are boron-containing compounds. Also provided are formulations comprising these boron-containing compounds. Further provided are OLEDs and related consumer products that utilize these boron-containing compounds.

Provided are boron-containing compounds. Also provided are formulations comprising these boron-containing compounds. Further provided are OLEDs and related consumer products that utilize these boron-containing compounds.

The present invention discloses a novel polyheteroaromatic compound derived from 7,7-dimethyl-5,7-dihydrospiro[cyclopenta[1,2-b:5,4-b-dithiophene-4,13-indeno[1,2-b]acridine] core structures. The polyheteroaromatic compound can be used as organic electroluminescence materials for use in an organic electroluminescence device and electronic equipment.

The present invention discloses a novel polyheteroaromatic compound derived from 7,7-dimethyl-5,7-dihydrospiro[cyclopenta[1,2-b:5,4-b-dithiophene-4,13-indeno[1,2-b]acridine] core structures. The polyheteroaromatic compound can be used as organic electroluminescence materials for use in an organic electroluminescence device and electronic equipment.

A fused polycyclic heteroaromatic compound represented by Chemical Formula 1, and an organic thin film, an organic thin film transistor, and an electronic device including the fused polycyclic heteroaromatic compound are provided. The fused polycyclic heteroaromatic compound may have a conjugation structure but reinforce planarity among adjacent rings and have further dense packing and thus much increase charge mobility.

A fused polycyclic heteroaromatic compound represented by Chemical Formula 1, and an organic thin film, an organic thin film transistor, and an electronic device including the fused polycyclic heteroaromatic compound are provided. The fused polycyclic heteroaromatic compound may have a conjugation structure but reinforce planarity among adjacent rings and have further dense packing and thus much increase charge mobility.

Provided are boron-containing compounds. Also provided are formulations comprising these boron-containing compounds. Further provided are OLEDs and related consumer products that utilize these boron-containing compounds.

Disclosed are an organic compound selected from a compound represented by Chemical Formula 1A, a compound represented by Chemical Formula 1B, and a combination thereof, an organic thin film including the organic compound, an organic thin film transistor, and an electronic device. The organic compound has liquid crystal properties and exhibits an ordered liquid crystal phase when being heated in a liquid crystal period due to asymmetric substituents and thereby charge mobility may be further improved.