Abstract: Disclosed are an organic compound represented by any one of Chemical Formulas A to E and an organic light-emitting diode including the same. Chemical Formulas A to E are as described in the specification.

Abstract: The present invention relates to an organic light-emitting compound represented by [Chemical Formula A] and an organic light-emitting device. In Chemical Formula, A, X, Y, Z, and the substituents R1 to R8, and R11 to R20 are as defined in the specification.

Abstract: Disclosed is an organic light emitting compound represented by Formula I: HAr1-(L)n-HAr2??(I) Also disclosed is an organic light emitting diode including the organic light emitting compound. Particularly, the organic light emitting diode employs the organic light emitting compound as a material for electron injection and transport. The organic light emitting diode can be driven at a low voltage and has improved life characteristics compared to conventional organic light emitting diodes. Due to these advantages, the organic light emitting diode is useful in a variety of industrial applications, including displays and lighting systems.

Abstract: Disclosed are an organic heterocyclic compound represented by Chemical Formula A and an organic light-emitting diode comprising the same. wherein substituents R1 to R8, X1 to X4, W1, and Y1 are each as defined in the specification.

Abstract: Disclosed is an organic light emitting device including a first electrode, a second electrode opposite to the first electrode, and at least one organic layer interposed between the first and second electrodes. The organic layer includes first and second compounds represented by Formulae A and B, respectively: The organic light emitting device exhibits low driving voltage, high efficiency, and long life. Due to these advantages, the organic light emitting device is useful in a variety of industrial applications, including displays and lighting systems.

Abstract: Disclosed is an organic light emitting compound represented by Formula 1: HAr1-(L)n-HAr2?? (1) Also disclosed is an organic light emitting device including the organic light emitting compound of Formula 1. Also disclosed is an organic light emitting device including the organic light emitting compound of Formula 1 as a first compound and a second compound represented by Formula 2: HAr3-(L)n-HAr4?? (2) The organic light emitting devices exhibit low driving voltage, high efficiency, and long life. Due to these advantages, the organic light emitting devices are useful in a variety of industrial applications, including displays and lighting systems.

Abstract: The present disclosure relates to an organic electroluminescent compound employed as a hole transport material or a hole injection material and an organic electroluminescent device including the same. The organic electroluminescent compound is represented by [Chemical Formula 1] and an organic electroluminescent device employing the organic electroluminescent compound as a hole transport material exhibits very superior luminous efficiency and lifetime characteristics.

Abstract: The present disclosure relates to an organic electroluminescent compound employed as a hole transport material or a hole injection material and an organic electroluminescent device including the same. The organic electroluminescent compound is represented by [Chemical Formula 1] and an organic electroluminescent device employing the organic electroluminescent compound as a hole transport material exhibits very superior luminous efficiency and lifetime characteristics.

Abstract: The present invention relates to a dust collection unit for use in a vacuum cleaner. According to the present invention, there is provided a dust collection unit for use in a vacuum cleaner which comprises a cylindrical casing in which air introduced through an inlet port is formed into spiral flow and of which an upper end is open; a cover for opening and closing the upper end of the casing; a filter which is installed on a bottom surface of the cover and formed in the shape of a cylinder having a predetermined length and by which fine foreign substances can be filtered out when the air is introduced from the exterior thereof, and through which the air is discharged downwardly; and an exhaust duct which comes into close contact with a bottom surface of the filter and including an exhaust port on a side surface of the casing to discharge the air from the filter to the exterior of the casing. It is preferred that the exhaust port of the casing be formed at a lower portion of the side surface of the casing.

Abstract: The present invention relates to a locking structure for an exhaust filter cover of a vacuum cleaner. According to the present invention, there is provided a locking device for an exhaust filter cover of a vacuum cleaner, comprising locking protrusions formed to protrude radially inward from an inner end of the exhaust filter cover which includes a plurality of exhaust holes and supports a filter therein; and locking grooves within which the locking protrusions are locked and which are formed on an outer peripheral surface of an exhaust flange formed to protrude laterally from the circumference of a circular exhaust portion that is formed on a side surface of a motor housing fixed within a casing of a main body of the vacuum cleaner, whereby the exhaust filter cover is fixed to the main body of the vacuum cleaner.

Abstract: The present invention relates to a locking device for mounting an exhaust filter of a vacuum cleaner on an exhaust filter cover. According to the present invention, there is provided a locking device for an exhaust filter of a vacuum cleaner, comprising a locking device for an exhaust filter of a vacuum cleaner, comprising an exhaust filter cover mounted on one side surface of a main body of the vacuum cleaner, and including a plurality of exhaust holes and a plurality of mounting grooves formed on an inner surface of a cylindrical sidewall of the exhaust filter cover; and a filter including a filtering portion for filtering air, and engagement protrusions formed on a cylindrical outer peripheral surface of the filter to be resiliently locked within the mounting grooves, respectively, whereby the filter is resiliently locked within the exhaust filter cover. Therefore, the filter is not rattled by any vibration, and no contact noise is generated.

Abstract: Multi-cyclone dust collector including a primary cyclone body and dust collecting box for causing circulation of air and collecting various foreign matters, the primary cyclone body and dust collecting box having a first air inlet for drawing air together with various foreign matters and a first air outlet for discharging air from which the various foreign matters are removed primarily, a secondary cyclone body over the primary cyclone body and dust collecting box for causing circulation of the air to flow in a direction at a right angle to the direction of air flow in the primary cyclone body and dust collecting box, the secondary cyclone body having a second air inlet in communication with the first air outlet for drawing the air from the primary cyclone body and dust collecting box to the secondary cyclone body in a direction tangential to an inside circumference of the secondary cyclone body, and a second air outlet in a center of one side of the second air cyclone body in the vicinity of the first air ou

Abstract: The present invention relates to a hook retention portion of vacuum cleaner. The vacuum cleaner of the present invention comprises a cleaner body with a motor installed therein; a dust collector engaged detachably in the rear of the cleaner body; and a suction hole portion for guiding air, introduced by the motor, into the cleaner. Further, in the present invention, the suction hole portion is formed with a projecting hook portion, and a hook retention portion for engaging the projecting hook portion therewith is formed in the dust collector, whereby the suction hole portion can be hung on the dust collector. Furthermore, the hook retention portion of the dust collector is formed at a handle that is prominently formed at a rear face of the dust collector. According to the constitution of the present invention, the suction hole portion can be more easily stored on the body of the vacuum cleaner wherein the dust collector is mounted to the rear face of the cleaner body.

Abstract: The present invention relates to a locking device for mounting an exhaust filter of a vacuum cleaner on an exhaust filter cover. According to the present invention, there is provided a locking device for an exhaust filter of a vacuum cleaner, comprising a locking device for an exhaust filter of a vacuum cleaner, comprising an exhaust filter cover mounted on one side surface of a main body of the vacuum cleaner, and including a plurality of exhaust holes and a plurality of mounting grooves formed on an inner surface of a cylindrical sidewall of the exhaust filter cover; and a filter including a filtering portion for filtering air, and engagement protrusions formed on a cylindrical outer peripheral surface of the filter to be resiliently locked within the mounting grooves, respectively, whereby the filter is resiliently locked within the exhaust filter cover. Therefore, the filter is not rattled by any vibration, and no contact noise is generated.

Abstract: The present invention relates to a dust collection unit for use in a vacuum cleaner. According to the present invention, there is provided a dust collection unit for use in a vacuum cleaner which comprises a cylindrical casing in which air introduced through an inlet port is formed into spiral flow and of which an upper end is open; a cover for opening and closing the upper end of the casing; a filter which is installed on a bottom surface of the cover and formed in the shape of a cylinder having a predetermined length and by which fine foreign substances can be filtered out when the air is introduced from the exterior thereof, and through which the air is discharged downwardly; and an exhaust duct which comes into close contact with a bottom surface of the filter and including an exhaust port on a side surface of the casing to discharge the air from the filter to the exterior of the casing. It is preferred that the exhaust port of the casing be formed at a lower portion of the side surface of the casing.

Abstract: A cyclone dust collector for vacuum cleaners, designed to effectively remove solids, including microparticles, from dust-laden air, is disclosed. This dust collector has an openable cyclone dust collection casing 200, with an air inlet port 100 formed on the casing such that the port tangentially introduces dust-laden air into the casing while forming a cyclone of the air within the casing. An air exhaust port 302 is formed at the top end of the casing for discharging the air from the casing to the atmosphere. A dust collecting filter 350 is provided within the casing for filtering the air before the air is discharged from the casing to the atmosphere through the air exhaust port. A suction unit 320 is connected to the casing 200, and forms a pressurized air current within the casing. A dust collecting chamber 210 is defined within the casing 200 at a lower portion by a horizontal partition plate 250, and contains the solids and particles, removed from the air through a cyclone dust collecting process.

Abstract: The present invention relates to a hook retention portion of vacuum cleaner. The vacuum cleaner of the present invention comprises a cleaner body with a motor installed therein; a dust collector engaged detachably in the rear of the cleaner body; and a suction hole portion for guiding air, introduced by the motor, into the cleaner. Further, in the present invention, the suction hole portion is formed with a projecting hook portion, and a hook retention portion for engaging the projecting hook portion therewith is formed in the dust collector, whereby the suction hole portion can be hung on the dust collector. Furthermore, the hook retention portion of the dust collector is formed at a handle that is prominently formed at a rear face of the dust collector. According to the constitution of the present invention, the suction hole portion can be more easily stored on the body of the vacuum cleaner wherein the dust collector is mounted to the rear face of the cleaner body.

Abstract: A cyclone collector for vacuum cleaner including a cyclone body, a contaminated air suction inlet for sucking contaminants and air into the cyclone body, an air vent for exhausting air purified in the cyclone body, and a contaminant vent for exhausting the contaminants separated from the cyclone body, is characterized in that the cyclone body includes a flow guide therein, which is disposed opposite to the air vent so as to improve swirl force inside the cyclone body and prevent swirl flow and exhaust air flow from interfering with each other.

Abstract: A cyclone dust collector for vacuum cleaners, designed to effectively remove solids, including microparticles, from dust-laden air, is disclosed. This dust collector has an openable cyclone dust collection casing 200, with an air inlet port 100 formed on the casing such that the port tangentially introduces dust-laden air into the casing while forming a cyclone of the air within the casing. An air exhaust port 302 is formed at the top end of the casing for discharging the air from the casing to the atmosphere. A dust collecting filter 350 is provided within the casing for filtering the air before the air is discharged from the casing to the atmosphere through the air exhaust port. A suction unit 320 is connected to the casing 200, and forms a pressurized air current within the casing. A dust collecting chamber 210 is defined within the casing 200 at a lower portion by a horizontal partition plate 250, and contains the solids and particles, removed from the air through a cyclone dust collecting process.