摘要:
Disclosed is an antenna having an antenna radiator formed by printing electrically conductive ink on a substrate. An antenna radiator according to an embodiment of the present invention is formed to the same thickness as a skin depth with respect to an operation frequency of the antenna. Therefore, an antenna can be fabricated using a small amount of electrically conductive ink while not reducing the gain of the antenna. Further, an antenna radiator according to another embodiment of the present invention is formed to the same thickness as a skin depth with respect to a predetermined frequency at a corresponding hot spot with respect to the frequency. Accordingly, an amount of electrically conductive ink used can be further reduced while maintaining the gain of the antenna.
摘要:
Disclosed is an antenna having an antenna radiator formed by printing electrically conductive ink on a substrate. An antenna radiator according to an embodiment of the present invention is formed to the same thickness as a skin depth with respect to an operation frequency of the antenna. Therefore, an antenna can be fabricated using a small amount of electrically conductive ink while not reducing the gain of the antenna. Further, an antenna radiator according to another embodiment of the present invention is formed to the same thickness as a skin depth with respect to a predetermined frequency at a corresponding hot spot with respect to the frequency. Accordingly, an amount of electrically conductive ink used can be further reduced while maintaining the gain of the antenna.
摘要:
A display apparatus includes a timing controller which outputs image data, a data control signal and a first gate control signal, a data driving circuit which receives the image data and converts the image data into data voltages, a control signal converting circuit which delays the first gate control signal by a reference time period to convert the first gate control signal into a second gate control signal based on a reference signal, a gate driving circuit which outputs gate signals based on the second gate control signal, and a display panel which displays an image corresponding to the one line of the data voltages based on the gate signals. Each gate signal rises at a point in time delayed from a starting point of a corresponding horizontal scanning period by the reference time period and falls before an ending point of the corresponding horizontal scanning period.
摘要:
An organic light emitting device and a method of manufacturing the same, the organic light emitting device includes a first electrode, a second electrode, and an organic layer that has at least a multi-coated emissive layer and which is interposed between the first and second electrodes. The multi-coated emissive layer is a single layer composed of a neutral emissive material and an no−ne parameter of the emissive layer is greater than an no−ne parameter of a single-coated layer. The organic light emitting device has a longer lifetime and high efficiency.
摘要:
A liquid crystal display (LCD) includes: a gate-off voltage generator including a temperature compensation unit which includes a constant voltage output device and a temperature-sensing device and outputting a gate-off voltage whose level varies according to a change in ambient temperature; a clock generator receiving a gate-on voltage and the gate-off voltage and outputting a first clock signal and a second clock signal; a gate driver receiving the first clock signal and the second clock signal and outputting gate signals; and a plurality of pixels turned on or off in response to the gate signals and thus displaying images, wherein the constant voltage output device outputs a constant voltage whose value is determined by a voltage difference between a reference terminal and an input terminal of the constant voltage output device, and the temperature-sensing device provides an input voltage whose value varies according to the change in the ambient temperature, wherein the voltage difference between the reference terminal and the input terminal of the constant voltage output device does not substantially vary according to the ambient temperature.
摘要:
In a method of fabricating a semiconductor device having vertical channels and a method of patterning a gate electrode of such semiconductor device, an initial conductive layer is removed by multiple etching processes.
摘要:
Provided is a white organic electroluminescent (EL) device including multiple polymer light emitting layers. a white organic electroluminescent device includes a first polymer light-emitting layer and a second polymer light-emitting layer, both of which are formed between a first electrode and a second electrode. A highest occupied molecular orbital (HOMO) energy level of the first polymer light-emitting layer is in the range 5.0 eV through 5.4 eV, and a HOMO energy level of the second polymer light-emitting layer is higher than the HOMO energy level of the first polymer light-emitting layer. Colors emitted from both of the first and second polymer light-emitting layers are combined to produce a white color.
摘要:
Various embodiments of the invention relate to a low-cost network system that can reduce the network cost by connecting a base station controller (BSC) with a base transceiver station (BTS) by the use of matching units that match an E1/T1 line to an IP line. In one embodiment, the system comprises a BSC matching unit (BSCMU) and a BTS matching unit (BTSMU). The BSCMU, connected to the BSC through a first dedicated line, converts a first dedicated-line data signal, received from the BSC, into a first IP signal to be transmitted through an IP line and converts a received second IP signal into a second dedicated-line data signal to be transmitted to the BSC. The BTSMU, connected to the BTS through a second dedicated line, converts the first IP signal into the first dedicated-line data signal to be transmitted to the BTS and converts the second dedicated-line data signal, received from the BTS, into the second IP signal.
摘要:
The present invention is related to a cyclopentaphenanthrene-based compound and an organic electroluminescence device using the same. In particular, the cyclopentaphenanthrene-based compound offers several advantages, including easy processibility, high solubility, superior color purity, color stability and thermal stability. Moreover, the cyclopentaphenanthrene-based compound may be used not only as a material for forming an organic layer of an organic electroluminescence device, particularly, a light-emitting layer, but also as a material of an organic pigment or nonlinear optical substance.
摘要:
Provided are a dimethylenecyclohexane compound represented by Formula 1 below, a method of preparing the same and an organic light emitting device comprising the dimethylenecyclohexane compound: The organic light emitting device comprising the dimethylenecyclohexane compound represented by Formula 1 has a low driving voltage, excellent efficiency and improved color purity.