Abstract:
Provided is an organic light emitting diode including: a first electrode; a second electrode; an organic layer between the first electrode and the second electrode; and a luminous efficiency improvement layer disposed on a surface of the first electrode facing away from the organic layer or a surface of the second electrode facing away from the organic layer, wherein the luminous efficiency improvement layer includes a porphyrazin derivative, a phthalocyanine derivative, a naphthalocyanine derivative, or a combination of at least two compounds of the foregoing.
Abstract:
The present embodiments provide a touch screen panel. The touch screen panel may include: a plurality of first sensing patterns connected to each other in a long side direction of a screen, the plurality of first sensing patterns having at least one indenting unit inwardly indented from respective sides of a polygon; and a plurality of second sensing patterns connected to each other in a short side direction of the screen, the second sensing patterns having at least one protrusion protruding outwardly from respective sides of a polygon. Vertical and horizontal edges of the first sensing patterns and the second sensing patterns are tilted by a predetermined angle.
Abstract:
A fuel cell system is provided with a first separation layer and a buffer solution layer disposed between a liquid-phase fuel storage layer and an anode of a membrane electrode assembly. A vapor-phase fuel is transferred to the buffer solution layer through the first separation layer, condensed, and diluted to produce a liquid-phase fuel with a low concentration in the buffer solution layer, and the low concentration liquid-phase fuel is supplied to the membrane electrode assembly. A second separation layer may be interposed between the first separation layer and the fuel storage layer. Fuel is supplied by a passive supplying method so that the system can be small with a high efficiency and unnecessary power consumption can be prevented. The fuel cell system can be operated regardless of orientation.
Abstract:
A fuel cell includes a fuel cell stack, a buffer, an actuator, and a control circuit. The control circuit controls the operation of the actuator according to a reference value of a reference volume of fuel disposed in the buffer. The fuel cell is operated by measuring a value corresponding to a volume of fuel disposed in the buffer, comparing the value with a reference value, and operating the actuator according to a result of the comparison.
Abstract:
Provided is a fuel cell system including: a fuel cell unit; a fuel cartridge; and a fuel actuator that is disposed between the fuel cartridge and the fuel cell unit, to control the fuel supply from the fuel cartridge to the fuel cell unit. The fuel cell unit comprises: a stack including unit cells oriented in parallel to one another; a phase change layer disposed adjacent to the stack and having a length perpendicular to the parallel orientation of the unit cells; a fuel diffusion layer disposed on the phase change layer.
Abstract:
An apparatus for preventing withdrawing and insertion of a carriage of a circuit breaker is disclosed. When a circuit breaker main body is inserted, an interlocking unit operates by interworking with the carriage withdrawing and inserting preventing apparatus, and while the circuit breaker is being closed, a withdrawal and insertion handle prevents a lead screw from being rotated by the interlocking unit. Thus, when the circuit breaker performs a closing operation, unnecessary withdrawing and inserting operation of the carriage is basically prevented to thus prevent various safety accidents, a contact resistance, a temperature increase, and damage to a device resulting from a breakdown.
Abstract:
A fuel delivery apparatus for a direct liquid feed fuel cell is provided. The fuel delivery apparatus includes a plate stack formed by a one or more double-sided plates positioned between opposing end plates. Both sides of the one or more double-sided plates, and the interior side of each end plate, may include one or more microchannels that extend between, and link, an inlet port with an outlet port. The length of the microchannels is chosen to be less than the height of a predetermined meniscus so that liquid fuel propelled by capillary force forms a meniscus that stands proximate the interface between the ends of the microchannels and the outlet port. A heater may be located at the upper ends of the microchannels around the plate stack, to vaporize the liquid fuel at the meniscus.
Abstract:
A synchronization extraction apparatus for a communication system and a method thereof are disclosed. A frame synchronization is obtained in a manner that the sum of an input signal and a delay signal is obtained without obtaining a simple correlation value between the input signal and the delay signal, and then a correlation value between a summed signal and the delay signal is obtained. The synchronization extraction apparatus and method can reduce the implementation complexity and power consumption in obtaining the frame synchronization, and thus increase the battery cycle of a terminal provided with the synchronization extraction apparatus or method.
Abstract:
An organic light emitting diode (OLED) display device and a method of fabricating the same capable of minimizing the number of process operations and a decrease in aperture ratio. The OLED display device includes a compensation circuit to compensate for a threshold voltage of a driving transistor. A pixel circuit of the OLED display device can be stably driven, can minimize a threshold voltage of a driving transistor using a minimized structure, and can increase an aperture ratio of the display device.