Abstract: [Problem] The thickness on a ripcord in a circular optical cable is reduced, to improve workability. [Solution] An optical cable of the present invention includes: an optical fiber unit including optical fibers; a sheath, having a circular external form, configured to house the optical fiber unit in a housing portion; and two strength members embedded in the sheath; and two rip cords, wherein when a direction of connecting the two strength members sandwiching the housing portion is a first direction and a direction intersecting the first direction is a second direction, in a cross section of the optical cable, a cross-sectional shape of the housing portion has a dimension in the second direction greater than that in the first direction, and the two rip cords is disposed to sandwich the optical fiber unit such that a direction of connecting the two rip cords is in the second direction, in the cross section of the optical cable.

Abstract: The present disclosure provides a photoelectric conversion element including a lower electrode, a photoelectric conversion layer, and an upper electrode in this order; a voltage is applied between the lower electrode and the upper electrode; the photoelectric conversion layer contains a first organic compound and a second organic compound; the first organic compound has a lower oxidation potential than the second organic compound, and ?E represented by the following formula (A) satisfies the following formula (B); where ?E=oxidation potential of first organic compound?reduction potential of second organic compound (A) ?E?1.

Abstract: An organic photoelectric conversion element includes an anode, a cathode, and a photoelectric conversion portion between the anode and the cathode. The photoelectric conversion portion includes a first organic compound layer containing an organic compound. Also, a second organic compound layer is disposed between the cathode and the photoelectric conversion portion. The second organic compound layer contains an organic compound having an ionization potential of 5.1 eV or less and a band gap of 2.5 eV or more.

Abstract: A bibenzo[d]imidazolidene compound inert to oxygen is provided. A 1,1?,3,3?-tetraphenyl-2,2?-bibenzo[d]imidazolidene compound is represented by general formula (1). In formula (1), R1 to R28 are each independently selected from a hydrogen atom and a substituent. The substituent is any of a halogen atom, an alkyl group containing 1 or more and 8 or less carbon atoms, and a substituted or unsubstituted aryl group. At least one of R1 to R28 is the substituent.

Abstract: Provided is an organic light emitting element having stable performance in the air.

Abstract: Provided is an organic light emitting element having stable performance in the air. The organic light emitting element includes: an anode; a cathode; and an emission layer placed between the anode and the cathode, in which: the organic light emitting element further includes a first organic compound layer placed between the cathode and the emission layer, and a second organic compound layer placed between the emission layer and the first organic compound layer, and contacted with the first organic compound layer; the first organic compound layer contains a first organic compound; the second organic compound layer contains a second organic compound; and the first organic compound includes a viologen compound represented by the following general formula [1] and the second organic compound includes an organic compound different from the viologen compound.

Abstract: A bibenzo[d]imidazolidene compound inert to oxygen is provided. A 1,1?,3,3?-tetraphenyl-2,2?-bibenzo[d]imidazolidene compound is represented by general formula (1). In formula (1), R1 to R28 are each independently selected from a hydrogen atom and a substituent. The substituent is any of a halogen atom, an alkyl group containing 1 or more and 8 or less carbon atoms, and a substituted or unsubstituted aryl group. At least one of R1 to R28 is the substituent.

Abstract: [Problem] The thickness on a ripcord in a circular optical cable is reduced, to improve workability. [Solution] An optical cable of the present invention includes: an optical fiber unit including optical fibers; a sheath, having a circular external form, configured to house the optical fiber unit in a housing portion; and two strength members embedded in the sheath; and two rip cords, wherein when a direction of connecting the two strength members sandwiching the housing portion is a first direction and a direction intersecting the first direction is a second direction, in a cross section of the optical cable, a cross-sectional shape of the housing portion has a dimension in the second direction greater than that in the first direction, and the two rip cords is disposed to sandwich the optical fiber unit such that a direction of connecting the two rip cords is in the second direction, in the cross section of the optical cable.

Abstract: Provided is an organic light emitting device, including: a plurality of pixels arranged on a substrate in at least one row along a longitudinal direction of the substrate, each of the plurality of pixels including a light emitting element part including, from the substrate side, a first electrode, an organic compound layer, and a second electrode in the stated order; and a sealing layer formed on the light emitting element part, the sealing layer covering an end of an inorganic material layer formed on a surface of the substrate or above the substrate, and formed below the organic compound layer, the sealing layer having an end formed on an inner side with respect to an end of the substrate at least in a transverse direction of the substrate.

Abstract: Provided is an organic light emitting device, including: a lower electrode; an upper electrode and a substrate having an electrode pad portion, in which when an angle formed by a slant in section of a film end in a region between the lower electrode and the electrode pad portion and a surface of the substrate is given as ?1, Formula (1) and Formula (2) are satisfied; and when an angle formed by a slant in section of a film end in at least a part of other regions than the region between the lower electrode and the electrode pad portion and the surface of the substrate is given as ?3, Formula (3) and Formula (4) are satisfied. tan(?1)=d1/d2??(1) tan(?1)<0.2??(2) tan(?3)=d3/d4??(3) tan(?3)?0.

Abstract: A former including: a guide pipe guiding an optical fiber bundle; a tape forming section forming a press-wrapping tape from a strip shape into a helical shape, while guiding the press-wrapping tape along a feed direction, the tape forming section including a curved section gradually curving the strip shaped press-wrapping tape while guiding the press-wrapping tape along the feed direction, and a helical section that is a helical tube shaped location further to a downstream side than a position where two edges of the curved section intersect with each other, the helical section causing two end portions of the press-wrapping tape that has been curved with the curved section to overlap and forming the press-wrapping tape into a helical shape, while guiding the press-wrapping tape along the feed direction, and gradually narrowing an external diameter of the helical shaped press-wrapping tape.

Abstract: A light emitter includes an elongated substrate and a plurality of emission elements on the substrate. The emission elements include a first electrode, an organic layer, and a second electrode in this order from the substrate side. The organic layer stretches over one of the emission elements and a next one in the longitudinal direction of the substrate. The light emitter further has a plurality of projections on the substrate. Each of the projections is adjacent to each of the emission elements in the transverse direction of the substrate. The emission elements are located between one of the projections and another. The projections are higher than the second electrode with respect to the principal surface of the substrate. The projections and the second electrode are spaced from each other.

Abstract: To make a tape length that can be supplied at one time long, and to make it possible to directly supply a tape from a record wound tape. A tape supplying method of this invention includes: connecting a tape end to an outer side of one record wound tape of a first record wound tape and a second record wound tape and a tape end to an inner side of another record wound tape, by matching a surface and a rear surface of the tapes; and after the connecting, supplying a tape of the first record wound tape and the second record wound tape from a tape end of the first record wound tape to an opposite side of a side that has been connected to the second record wound tape.

Abstract: Provided is an organic light emitting device having high emission efficiency and a long continuous driving lifetime. The organic light emitting device includes: an anode; a cathode; and an emitting layer placed between the anode and the cathode, in which: the emitting layer contains an emitting material that emits fluorescence; and in an emission wavelength region of the emitting material, an absorption peak of an absorption spectrum in a minimum excited triplet state of a material having a smallest minimum excited triplet energy out of constituent materials in the emitting layer is absent.

Abstract: Provided is an organic light emitting element having stable performance in the air.

Abstract: A light emitting apparatus includes: a pixel circuit formed over a substrate; a partition including a plurality of openings formed over the substrate with the pixel circuit; and a plurality of pixels defined by the plurality of the openings, wherein the pixel includes a light emitting element including a lower electrode connected to the pixel circuit and an organic compound layer formed over the lower electrode, the plurality of the pixels is arranged in a line in a longitudinal direction of the substrate, the pixel circuit includes: a transistor including a gate electrode and source/drain electrodes; a first interconnection including the gate electrode; and a second interconnection including the source/drain electrodes, and the second interconnection and an interconnection formed of a same layer as the second interconnection are separated from the organic compound layer in planar view from a direction perpendicular to a main surface of the substrate.

Abstract: Provided is an organic light emitting device, including: a lower electrode; an upper electrode and a substrate having an electrode pad portion, in which when an angle formed by a slant in section of a film end in a region between the lower electrode and the electrode pad portion and a surface of the substrate is given as ?1, Formula (1) and Formula (2) are satisfied; and when an angle formed by a slant in section of a film end in at least a part of other regions than the region between the lower electrode and the electrode pad portion and the surface of the substrate is given as ?3, Formula (3) and Formula (4) are satisfied. tan(?1)=d1/d2??(1) tan(?1)<0.2??(2) tan(?3)=d3/d4??(3) tan(?3)?0.

Abstract: Provided is an organic light emitting device, including: a substrate; and a lower electrode, an organic compound layer including an emission layer, and an upper electrode sequentially provided on the substrate, in which: the organic compound layer covers the lower electrode; the upper electrode covers the organic compound layer; the upper electrode is electrically connected to a wiring connecting portion provided in the substrate; and when an angle formed between a tilt of a section of an end in at least a partial region of the organic compound layer and a surface of the substrate is represented by ?1, the following formulas (1) and (2) are satisfied: tan(?1)=d1/d2??(1) tan(?1)?0.2??(2) in the formula (1), d1 represents a thickness of the organic compound layer and d2 represents a taper width of the section of the end of the organic compound layer.

Abstract: Provided is a method of manufacturing an organic electroluminescence display device including an organic electroluminescence element, which has element characteristics comparable to those in the case of a vacuum in-situ process, while utilizing a patterning approach based on photolithography. The method of manufacturing an organic electroluminescence display device includes: an organic compound layer-forming step of forming an organic compound layer at least on a first electrode; a release layer-forming step of forming a release layer on the organic compound layer; a release layer-processing step of processing the release layer; and an organic compound layer-processing step of removing the organic compound layer in a region not covered with the release layer processed in the release layer-processing step, and at least the lowermost layer out of the release layer is a deposited film formed of a material soluble in a polar solvent.

Abstract: Provided is an organic light emitting element having stable performance in the air. The organic light emitting element includes: an anode; a cathode; and an emission layer placed between the anode and the cathode, in which: the organic light emitting element further includes a first organic compound layer placed between the cathode and the emission layer, and a second organic compound layer placed between the emission layer and the first organic compound layer, and contacted with the first organic compound layer; the first organic compound layer contains a first organic compound; the second organic compound layer contains a second organic compound; and the first organic compound includes a viologen compound represented by the following general formula [1] and the second organic compound includes an organic compound different from the viologen compound.