摘要:
An organic electroluminescent element using a compound represented by the following general formula (I) emits dark blue light and has small changes in the chromaticity and in the driving voltage even after driving for a long period of time: wherein R1 to R6; Q1 and Q2; X1, X2, X3 and X4 are as defined herein.
摘要:
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 (I) is contained in any layer of the at least one organic layer. The organic electroluminescent element has good luminous efficiency, driving voltage, and driving durability, and has low dependence of such performance on a deposition rate: wherein X, Q, R1 to R8 are as defined in the application.
摘要:
An organic electroluminescent element using a compound represented by the following general formula emits dark blue light and has a small change in the chromaticity during luminance modulation: wherein each of R1 to R8 represents a hydrogen atom or a substituent; A1 to A4 represent CR31 or N; L and X each independently represent any one of CR32R33, NR34, O, S, and SiR35R36; and each of R31 to R36 represents a hydrogen atom or a substituent.
摘要翻译:使用由以下通式表示的化合物的有机电致发光元件发出深蓝色光,并且在亮度调制期间具有小的色度变化:其中R1至R8各自表示氢原子或取代基; A1至A4表示CR31或N; L和X各自独立地表示CR32R33,NR34,O,S和SiR35R36中的任一个; R 31〜R 36表示氢原子或取代基。
摘要:
An organic electroluminescent element is provided that has high luminous efficiency, and a slow luminance deterioration rate in the initial stage of lighting. The organic electroluminescent element includes 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, wherein at least one organic layer includes a compound represented by the general formula (1). (R11 to R15 represent hydrogen atoms, alkyl groups, or silyl groups, and any one of R21 to R24 represents a group represented by general formula (1A) or (1B). Ph4 represents a p-phenylene group, and at least one of Ph4a and Ph4b represents a p-phenylene group.)
摘要:
The present invention provides a liquid crystal composition having at least a liquid crystal and a chiral dopant, in which the chiral dopant is a compound having a liquid crystalline group of a specific structure bonded to a rigid optically active compound. The present invention provides a liquid crystal element having at least a pair of electrodes in which at least one of the electrodes is a transparent electrode, and a liquid crystal layer containing the liquid crystal composition. The present invention also provides a reflective display material and a light-controlling material having at least the liquid crystal element, and a method of preparing the liquid crystal element by adding the chiral dopant to a host liquid crystal.
摘要:
The invention provides a light modulating material capable of supplying a predetermined light modulating property over a long period of time regardless of an incident light condition. The light modulating material includes at least: a first liquid crystal layer which has at least a dichroic dye and changes from a colorless transparency state to a colored transparency state when voltage is applied thereto; and a second liquid crystal layer which changes from a colorless transparency state to a white light-scattering state when voltage is applied thereto. The second liquid crystal layer is provided closer to a surface of the light modulating material on which light is incident compared to the first liquid crystal layer.
摘要:
A liquid crystal element in which a liquid crystal layer containing at least two types of dual frequency addressable smectic liquid crystal compositions having different threshold voltage are disposed between one pair of electrodes at least one of them being a transparent electrode.
摘要:
A compound represented by formula (1): wherein R1 represents an alkyl group having from 1 to 10 carbon atoms and R2 represents an alkyl group having from 8 to 20 carbon atoms.
摘要:
A novel liquid crystal composition is disclosed. The liquid crystal composition comprises at least one dual-frequency switchable smectic liquid crystal, and at least one dichroic dye. And a novel liquid crystal device is also disclosed. The device comprises a pair of electrodes of which at least one is a transparent electrode, and a liquid crystal layer between the pair of electrodes comprising a liquid crystal composition comprising at least one dual-frequency switchable smectic liquid crystal, and at least one dichroic dye.
摘要:
An organic electroluminescent element that uses a compound expressed by the following general formula emits dark blue light and exhibits little change in chromaticity during brightness modulation. (n1 is an integer from 0 to 8; the R1 [groups] are each independently a substituent substituted for a hydrogen atom of the pyrene skeleton; X is CRaRb (Ra and Rb are each independently a hydrogen atom or a substituent), O, S, or SiRdRe (Rd and Re are each independently a hydrogen atom or a substituent); and A1 to A4 represent each independently either N or CRf (Rf represents a hydrogen atom or a substituent, and two adjacent Rf [groups] may jointly form a saturated or unsaturated ring, but no more than two rings may be formed jointly by two or more of the Rf [groups]).)