Abstract:
Disclosed is a technique suitable for performing a stable protection function while satisfying a standard specification in the implementation of an LCC of a digital inverter for an LCD backlight. The LCC of a digital inverter for an LCD backlight comprises: a transformer which raises a AC power supplied from the inverter to an AC voltage of a high voltage for lighting a lamp; a voltage/current detection unit for detecting at least one of the current and voltage supplied to the lamp; an A/D converter for converting the detected voltage/current value of analog to a digital value; and an MCU which induces an LCC check point after the start of a striking process, compares at least one of the output current value and voltage value from the transformer with a preset reference value on the basis of an output signal of the A/D converter and then shuts down the inverter when the output current value or voltage value is determined to be abnormal.
Abstract:
Systems and methods are disclosed for providing a linear polar transmitter. The systems and methods may include generating an input amplitude signal and an input phase signal, where the input amplitude signal and the input phase signal are orthogonal components of an input signal, and where the input amplitude signal and the input phase signal are generated on respective first and second signal paths. The systems and methods may also include processing the input amplitude signal along the first signal path using an amplitude error signal to generate a predistorted amplitude signal, and processing the input phase signal along the second signal path using an phase error signal to generate a predistorted phase signal. The systems and methods may also include providing the predistorted amplitude signal along the first signal path and the predistorted phase signal along the second signal path to a power amplifier to generate an output signal, where the amplitude error signal is generated from a comparison of at least an amplitude portion of the output signal with the predistorted amplitude signal and where the phase error signal is generated from a comparison of at least a phase portion of the output signal with the predistorted phase signal.
Abstract:
System and methods are provided for multi-path orthogonal recursive predistortion. The systems and methods may include generating a first orthogonal signal and a second orthogonal signal, where the first and second signals are orthogonal components of an input signal and processing, at a first predistortion module, the first orthogonal signal and a first error correction signal to generate a first predistorted signal. The system and methods may also include processing, at a second predistortion module, the second orthogonal signal and a second error correction signal to generate a second predistorted signal, and providing the generated first and second predistorted signals to a nonlinear device, where the nonlinear device generates an output based upon the first and second predistorted signals, where the first error correction signal is determined based upon an analysis of the output and the first predistorted signal, and where the second error correction signal is determined based upon an analysis of the output and the second predistorted signal.
Abstract:
Systems and methods may be provided for a CMOS RF antenna switch. The systems and methods for the CMOS RF antenna switch may include an antenna that is operative to transmit and receive signals over at least one radio frequency (RF) band, and a transmit switch coupled to the antenna, where the transmit switch is enabled to transmit a respective first signal to the antenna and disabled to prevent transmission of the first signal to the antenna the systems and methods for the CMOS RF antenna switch may further include a receiver switch coupled to the antenna, where the receiver switch forms a filter when enabled and a resonant circuit when disabled, where the filter provides for reception of a second signal received by the antenna, and where the resonant circuit blocks reception of at least the first signal.
Abstract:
A device and method for layout and fabrication of power supply bus lines in an integrated circuit such as a memory circuit are described. In accordance with the present invention, power bus lines and bonding pads of the circuit are not necessarily formed in both edge regions and center regions of the device. The bonding pads are formed in the region according to the package being used, and the power bus lines are formed in the other region. This is accomplished by forming the bonding pads over landing pads. Landing pads are formed in both the center region and the edge region under the top surface of the device. If the device is to be packaged in an edge pad configuration, the bonding pads are formed over the landing pads in the edge region, and power supply bus lines can be formed over the landing pads in the center region. Similarly, if the device is to be packaged in a center pad configuration, the bonding pads are formed over the landing pads in the center region, and the power supply bus lines can be formed over the landing pads in the edge region. The bonding pads are connected to the landing pads by conductive vias. Because the power bus lines are not formed in the same region as bonding pads, they can occupy a relatively large portion of the region in which they are formed. That is, they can be made much larger than they would be using the conventional approach in which both bonding pads and power bus lines are formed in the same region. As a result, the power noise drawbacks of the conventional approach are eliminated.
Abstract:
Provided are an organic light emitting device (OLED) and a flat display including the OLED. The OLED includes an organic layer which includes a pixel electrode, an opposite electrode, and at least an emission layer between the pixel electrode and the opposite electrode, wherein the emission layer includes a long wavelength-blue emission layer emitting blue light having a long wavelength and a short wavelength-blue emission layer emitting blue light having a short wavelength. The long wavelength-blue emission layer is positioned in a location to enhance emission of blue light from the emission layer. The OLED can emit blue light with high efficiency and high brightness.
Abstract:
A triarylamine-based compound of formula 1, a method of preparing the same, and an organic light emitting device including the triarylamine-based compound of formula 1: where Ar1 through Ar4 are independently a substituted or unsubstituted C6-C30 aryl group or a substituted or unsubstituted C2-C30 heterocyclic group; R is a halogen atom, a cyano group, a substituted or unsubstituted C1-C30 alkyl group; n is an integer of 1 through 3; and m is an integer of 1 through 3. The triarylamine-based compound of formula 1 has excellent electrical properties and a great charge transporting capability. An organic light emitting device including an organic layer formed of the triarylamine-based compound has high efficiency, low operating voltage, great luminance, and long lifetime.
Abstract:
A triazine-based compound having three biphenyl groups, represented by Structure 1, below, wherein R1 through R18 are each independently one of: hydrogen, a substituted C1-30 alkyl group, an unsubstituted C1-30 alkyl group, a substituted C6-50 aryl group, an unsubstituted C6-50 aryl group, a substituted C4-50 heteroaryl group, and an unsubstituted C4-50 heteroaryl group, and at least one of R1, R2, R7, R8, R13 and R14 is one of: a substituted C1-30 alkyl group, an unsubstituted C1-30 alkyl group, a substituted C6-50 aryl group, an unsubstituted C6-50 aryl group, a substituted C4-50 heteroaryl group, and an unsubstituted C4-50 heteroaryl group.
Abstract translation:由以下结构1表示的具有三个联苯基的三嗪基化合物,其中R 1至R 18各自独立地为氢,取代的C 1-30个烷基,未取代的C 1〜30个烷基,取代的C 6〜6-50芳基,未取代的C 6 -50个芳基,取代的C 4-50杂芳基和未取代的C 1-4-50杂芳基,以及至少一个R SUB R 1,R 2,R 7,R 8,R 13和R SUB > 14 sub>是以下之一:取代的C 1-130烷基,未取代的C 1-130烷基,取代的C 6〜 50个芳基,未取代的C 6〜6-50芳基,取代的C 4-50杂芳基和未取代的C 4-50 杂芳基。
Abstract:
A difluoropyridine-based compound includes at least one difluoropyridine group in its molecule. The difluoropyridine-based compound may be used as an electron injection material, an electron transport material, or a hole blocking material in full-color fluorescent or phosphorescent devices. The difluoropyridine-based compound has good electrical characteristics and a high charge transport capability. The difluoropyridine-based compound may be used to produce an organic electroluminescent device with high efficiency, low voltage, improved brightness, and a long life expectancy.