Abstract: A compound for organic EL includes a polymer molecule having molecules shown in the following Formulae 1 to 5 as constituent units where R is an alkyl group, an aryl group, or an alkylaryl group, where R? is hydrogen, an alkyl group, or an alkylaryl group.

Abstract: An organic EL device comprising organic compound layers, at least one of which has a skeleton represented by formula (I): where L0 is any one of o-, p-, and m-phenylene groups which have two, three or four rings and which may have a substituent with the proviso that when L0 is a phenylene group having four rings, the phenylene group may have an unsubstituted or substituted aminophenyl group somewhere therein, R01, R02, R03 and R04 are each any one of the following groups: where R11, R12, R13, R14, R15, R16 and R17 are each a substituted or unsubstituted aryl group, and r1, r2, r3 and r4 are each an integer of 0 to 5 with the proviso that r1+r2+r3+r4 1, is less susceptible to physical changes, photochemical changes and electrochemical changes, and can emit light having various colors with high reliability and high light emission efficiency.

Abstract: A compound for use in organic EL devices comprising Xn—Y wherein X is a compound of the formula and Y is a linking group and R1 to R8 and a to d are hydrogen, an alkyl group, an aryl group which may be substituted, an allyl group which may be substituted, a heterocyclic group which may be substituted, an amino group, or an arylamino group which may be substituted.

Abstract: The invention aims to provide a perylene derivative preparation process featuring satisfactory yields and improved preparation efficiency, a perylene derivative obtained by the process, and an organic EL device using the same.

Abstract: One object of the invention is to provide an organic EL device which uses an optical and electronic functional material particularly less susceptible to physical changes, photochemical changes and electrochemical changes, and can give out light emissions of various colors with high reliability and high light emission efficiency. Another object of the invention is to provide an organic EL device comprising an organic thin film formed by an evaporation technique of a compound that has high amorphism and high compatibility with a hole injecting electrode, said organic EL device being substantially free from a driving voltage increase or a luminance drop and a current leakage with neither development nor growth of local non-emitting spots, and so being capable of emitting light with high luminance, and high reliability such as high heat resistance.

Abstract: An organic EL device comprising organic compound layers, at least one of which has a skeleton represented by formula (I):   where L0 is any one of o-, p-, and m-phenylene groups which have two, three or four rings and which may have a substituent with the proviso that when L0 is a phenylene group having four rings, the phenylene group may have an unsubstituted or substituted aminophenyl group somewhere therein, R01, R02, R03 and R04 are each any one of the following groups:   where R11, R12, R13, R14, R15, R16 and R17 are each a substituted or unsubstituted aryl group, and r1, r2, r3 and r4 are each an integer of 0 to 5 with the proviso that r1+r2+r3+r4≧1, is less susceptible to physical changes, photochemical changes and electrochemical changes, and can emit light having various colors with high reliability and high light emission efficiency.

Abstract: In an organic EL device comprising organic layers between a pair of electrodes participating in at least a light emitting function, at least one organic layer contains an organic compound selected from naphthacene, tetraaryldiamine, anthracene and quinoxaline derivatives as a host material and an organic compound having a specific skeleton, typically diindeno[1,2,3-cd:1′,2′,3′-lm]perylene derivative as a dopant. The device is capable of light emission to a satisfactory luminance, especially in a long wavelength region, and with a chromatic purity sufficient for use in full color displays, and had a sufficient durability to sustain such improved light emission performance over a long time.

Abstract: The invention aims to provide a perylene derivative preparation process featuring satisfactory yields and improved preparation efficiency, a perylene derivative obtained by the process, and an organic EL device using the same.

Abstract: In an organic EL device comprising organic layers between a pair of electrodes participating in at least a light emitting function, at least one organic layer contains an organic compound selected from naphthacene, tetraaryldiamine, anthracene and quinoxaline derivatives as a host material and an organic compound having a specific skeleton, typically diindeno[1,2,3-cd:1′,2′,3′-lm]perylene derivative as a dopant. The device is capable of light emission to a satisfactory luminance, especially in a long wavelength region, and with a chromatic purity sufficient for use in full color displays, and had a sufficient durability to sustain such improved light emission performance over a long time.

Abstract: One object of the invention is to provide an organic EL device which uses an optical and electronic functional material particularly less susceptible to physical changes, photochemical changes and electrochemical changes, and can give out light emissions of various colors with high reliability and high light emission efficiency. Another object of the invention is to provide an organic EL device comprising an organic thin film formed by an evaporation technique of a compound that has high amorphism and high compatibility with a hole injecting electrode, said organic EL device being substantially free from a driving voltage increase or a luminance drop and a current leakage with neither development nor growth of local non-emitting spots, and so being capable of emitting light with high luminance, and high reliability such as high heat resistance.

Abstract: An object of the invention is to provide an organic EL device-forming compound and an organic EL device which produce light emission of satisfactory luminance, especially at long wavelength and are durable in that improved light emitting performance lasts for a long time. The object is attained by a compound having a basic skeleton represented by formula (I) and an organic EL device comprising the same. (CF 33) In formula (I), R1 to R8 each are hydrogen or a substituted or unsubstituted aryl or alkenyl group, with the proviso that at least six of R1 to R8 are substituted or unsubstituted aryl or alkenyl groups.

Abstract: An object of the invention is to provide an organic EL device-forming compound and an organic EL device which produce light emission of satisfactory luminance, especially at long wavelength and are durable in that improved light emitting performance lasts for a long time. The object is attained by a compound having a basic skeleton represented by formula (I) and an organic EL device comprising the same. In formula (I), R1, R2, R3, and R4 each are a substituted or unsubstituted aryl or alkenyl group; R5, R6, R7, and R8 each are hydrogen; at least two of R1 to R4 are aryl groups which are at least bicyclic, aryl groups having aryl, amino, alkenyl, aryloxy or heterocyclic groups as substituents, or alkenyl groups, and when at least two substituents are monocyclic aryl groups, they further have substituents, and when the substituents are amino groups, at least two of R1, R2, R3, and R4 have substituted or unsubstituted aryl groups as substituents.

Abstract: An organic EL device comprising a cathode, an anode, and at least one organic compound layer containing an organic compound represented by formula (I): where L0 is any one of o-, p-, and m-phenylene groups which have two, three or four rings and which have a substituent with the proviso that when L0 is a phenylene group having four rings, the phenylene group may have an unsubstituted or substituted aminophenyl group somewhere therein, and at least one of R01, R02, R03 and R04 is any one of the following groups: where R1, R12, R13, R14, R15, R16 and R17 are each a substituted or unsubstituted aryl group, and r1, r2, r3 and r4 are each an integer of 0 to 5 with the proviso that r1+r2+r3+r4≧1.

Abstract: A floating magnetic head comprising a substantially rectangular slider made of a non-magnetic substance and having leading and trailing ends. The slider is provided with a groove which gradually increases in depth along one side of the slider extending toward the trailing end and has an opening at the trailing end. The slider has rails mounted on a surface of the slider that is opposite to a magnetic recording medium to produce a floating force. A magnetic head core is bonded to one side of the slider. The core has a read/write gap, first and second legs, an inclined face opposite to the bonding surface, and a track width on the surface opposite to the magnetic recording medium. The second leg is located at the trailing end of the slider without protruding from the trailing end.

Abstract: A floating magnetic head including a spacer, made from a nonmagnetic substance and which is equal or longer than a head core, is interposed between a slider made from a magnetic substance and the head core. In an alternative embodiment, a part of the slider is made from a nonmagnetic substance and the head core is secured thereon, and coils are wound in opposite senses around core legs of the head core. The present invention shields a noise of an external magnetic field with the slider and improves a recording performance because the slider is isolated magnetically and a magnetic resistance of the slider becomes smaller than that of the head core.

Abstract: A floating magnetic head comprising a slider and a head core integral with the slider. The slider is made of a nonmagnetic material such as barium titanate or calcium titanate. The slider has rails on its surface opposite to a magnetic recording medium to produce a floating force. The head core has a read/write gap. The head core is equipped with a winding. The core is disposed on the outside of the slider and has a tapering thickness.

Abstract: A floating magnetic head includes a nearly rectangular non-magnetic slider having a floating surface for generating a floating force against a magnetic recording medium, and a magnetic head core including trailing and leading portions made of a magnetic thin film material laminated into a thickness equivalent to a track width and sandwiched by non-magnetic substrates. The magnetic head core is bonded via glass to a side portion of the slider so that a magnetic gap is located on the surface which slides against the magnetic recording medium and the magnetic head core is made shorter than the length of the side of the slider. A chamfered portion is formed in at least one side of the magnetic head core.

Abstract: The air bag 3 of this invention includes a suspension member 6, which is furnished between the base cloth on the side facing the person in the vehicle and the base cloth to be fixed on the fixed portion of car body or between the former base cloth and the fixed portion of car body. When inflated, the shape of said air bag is maintained in the predetermined shape by said suspension member. The suspension string 6 consists of a plurality of single strings 6.sub.1 and 6.sub.2, and these single strings have the sewn portions 6f to be sewn on the base cloth 3a on the side facing to said person in vehicle and all or almost all sewn portions 6f of the single strings are overlapped on each other, and these are sewn together with the base cloth 3b on the side facing to the person in vehicle. This makes it possible to increase the strength of the sewn portions and to effectively cut the base cloth. By overlapping the entire sewn portions, the positioning of single strings can be performed much easier.