Organic electroluminescent device
AssigneeFUJIFILM Corporation
InventorsSatoshi Sano, Tatsuya Igarashi, Masaru Kinoshita
Life of this patent
Estimating the term…
Abstract
An organic electroluminescent device, which comprises: a pair of electrodes; and an organic compound layer including a light-emitting layer between the pair of electrodes, wherein the organic compound layer comprises a compound represented by formula (I): wherein Z1, Z2, Z3 and Z4 each independently represents an atom selected from the group consisting of carbon, nitrogen, sulfur and oxygen and necessary for forming an unsaturated 6-membered ring skeleton, the atom may have a hydrogen atom or a substituent; a bond in the unsaturated 6-membered ring indicates a single bond or a double bond; and R1 represents a substituent.
Claims14
An organic electroluminescent device, which comprises:
- a pair of electrodes;
- and
- an organic compound layer including a light-emitting layer between the pair of electrodes,
- wherein the organic compound layer comprises a compound represented by formula (III):
- wherein R3, R5, R8 and R13 each represents a hydrogen atom;
- R4 represents a hydrogen atom, a phenyl group, a substituted phenyl group, an alkyl group, or a substituted alkyl group;
- R6, R7, R9, R10, R11, R12, R14 and R15 each independently represents a hydrogen atom or a substituent, when R6, R7, R9, R10, R11, R12, R14 and R15 each represents a substituent, the substituent may further have a substituent;
- and
- pairs of R6 and R7, R9 and R10, R11 and R12, and R14 and R15, each may combine to form a ring, wherein the compound represented by formula (III) has the lowest excited triplet energy level of from 65 kcal/mol (272.35 kJ/mol) to 95 kcal/mol (398.05 kJ/mol) and has a glass transition temperature of from 110 to 400° C.
A compound represented by formula (V):
- Formula (V):
- wherein R26, R28, R29, R30, R31, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42 and R43 each independently represents a hydrogen atom or a substituent, when R26, R28, R29, R30, R31, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42 and R43 each represents a substituent, the substituent may further have a substituent, provided that pairs of R26 and R43, R26 and R39, R28 and R29, R30 and R31, R33 and R34, R33 and R38, R34 and R35, R35 and R36, R36 and R37, R37 and R38, R39 and R40, R40 and R41, R41 and R42, and R42 and R43, each does not combine to form a condensed ring;
- R27 and R32 each represents a hydrogen atom;
- and R4 has the same meanings as R4 in formula (III).
A compound represented by formula (VI):
- wherein R44, R45, R48 and R49 each independently represents a hydrogen atom or a substituent, when R44, R45, R48 and R49 each represents a substituent, the substituent may further have a substituent;
- and
- pairs of R44 and R45, and R48 and R49, each may combine to form a ring;
- R46 and R47 each independently represents a hydrogen atom or a substituent, when R46 and R47 each represents a substituent, the substituent may further have a substituent, provided that when R28, R29, R30, R31, R46 and R47 each represents a substituent, pairs of R44 and R46, R45 and R46, R47 and R48, and R47 and R49, each does not combine to form a condensed ring;
- and R4 represents a hydrogen atom or a substituent;
- and
- R28, R29, R30, and R31 each independently represents a hydrogen atom or a substituent, when R28, R29, R30, and R31 represents a substituent, the substituent may further have a substituent, but pairs of R28 and R29, R30 and R31 each does not combine to form a condensed ring;
- and R27 and R32 each represents a hydrogen atom.
Dependencies are inferred from the claim text.