442results about How to "Minimizing deterioration" patented technology

An organic electroluminescent device including: an anode, a cathode, and at least an emitting layer, an electron-transporting layer and an electron-injecting layer interposed between the anode and the cathode; the emitting layer containing a host material which is a pyrene derivative, a chrysene derivative, a fluorene derivative or an anthracene derivative; the electron-transporting layer containing an electron-transporting material which is a pyrene derivative, a chrysene derivative, a fluorene derivative or an anthracene derivative, the anthracene derivative containing no heterocyclic ring, and has a heterocyclic ring and having a fluorescence quantum yield which is smaller than that of the host material contained in the emitting layer; and the electron-injecting layer containing a non-complex compound having a nitrogen-containing five-membered heterocyclic structure.

An organic light emitting diode display includes a data line, a gate line that crosses the data line to receive a scan pulse, a high potential driving voltage source to generate a high potential driving voltage, a low potential driving voltage source to generate a low potential driving voltage, a light emitting element to emit light due to a current flowing between the high potential driving voltage source and the low potential driving voltage source, a drive element connected between the high potential driving voltage source and the light emitting element to control a current flowing in the light emitting element depending on a voltage between a gate electrode and a source electrode of the drive element, and a driving current stabilization circuit to apply a first voltage to the gate electrode of the drive element to turn on the drive element and to sink a reference current through the drive element to set a source voltage of the drive element at a sensing voltage and to modify the voltage between the gate and source electrodes of the drive element to scale a current to be applied to the light emitting element from the reference current.

A luminescence device is principally constituted by a pair of electrodes and an organic compound layer disposed therebetween. The organic compound layer contains a metal coordination compound characterized by having a partial structure represented by the following formula (1): wherein each of X and C represents an atdm constituting a cyclic group.

A power calculating and amplitude limitation judging portion 13 calculates the power value x of the digital quadrature baseband signal I, Q from a transmission data generator 1, and compares the power value x with a power threshold value y set by a threshold value setting portion 14 to judge whether amplitude limitation is needed or not. An amplitude maximum limiting portion 12 subjects the quadrature baseband signal from the transmission data generator 1 to the amplitude maximum value limitation based on the judgment result in the power calculating and amplitude limitation judging portion 13. Thereafter, the digital quadrature baseband signal which has been subjected to the amplitude maximum value limitation by the amplitude maximum value limiting portion 12 is subjected to the distortion compensation using complex multiplication based on the distortion compensation data by a non-linear distortion compensation calculator 2.

A radio over fiber link apparatus for transmitting / receiving radio frequency up / downlink signals in a TDD mobile communication system. The radio over fiber link apparatus includes a center site for receiving radio frequency signals from an access point of the mobile communication system. The center site has a first electro-optic converter for converting the radio frequency signals into optical signals, bias control of the first electro-optic converter being performed based on the switching of TDD signals; and a remote for transmitting the radio frequency signals to a mobile communication terminal through an antenna. The remote site has a first photoelectric converter for converting the optical signals transmitted through an optical fiber from the center site into radio frequency signals.

Disclosed is a liquid crystal display (LCD) device which is capable of minimizing deterioration in picture quality caused by a kickback voltage, and a driving method thereof. The LCD device includes an LCD panel having a plurality of liquid crystal cells to which a pixel voltage signal is supplied, and a compensating common voltage generator for generating different compensating common voltages according to a pixel voltage signal which is fed back from the LCD panel.

In a process of dividing gates of multi-layered films in fabricating a NAND flash memory having a three-dimensional structure, a pattern is prevented from deforming and falling. A ratio of a length L to a height h of control gate groups configuring a memory cell of the flash memory is set to be less than 1.65 which is a range in which buckling does not occur. It is desirable that a ratio of a length L to a width W of the control gate groups is set to be less than 16.5.

An imaging apparatus has image sensors, an imaging optical system of which relative position with the image sensors is fixed, and a merging unit which connects images obtained by imaging while changing the relative position between the image sensors and the imaging optical system. Aberration of the imaging optical system in an image obtained by each image sensor is predetermined based on the relative position between the imaging optical system and the image sensor. The merging unit smoothes seams of the two images by setting a correction area in an overlapped area where the two images to be connected overlap with each other, and performing correction processing on pixels in the correction area. A size of the correction area is determined according to the difference in aberrations of the two images, which is determined by a combination of image sensors which have imaged the two images.

Laser diodes containing aluminum at high concentration in an active layer have been usually suffered from remarkable facet deterioration along with laser driving operation and it has been difficult for the laser diodes to attain high reliability. An aluminum oxide film lacking in oxygen is formed adjacent to the semiconductor on an optical resonator facet, by which facet deterioration can be minimized and, accordingly, the laser diode can be operated with no facet deterioration at high temperature for long time and a laser diode of high reliability can be manufactured at a reduced cost.

A wireless power transmission unit includes oscillators that convert DC energy into RF energy with a frequency f0, power transmitting antennas, and power receiving antennas. Each power transmitting antenna is a series resonant circuit in which a power transmitting inductor and a first capacitor are connected in series. Each power receiving antenna is a parallel resonant circuit in which a power receiving inductor and a second capacitor are connected in parallel. If the oscillator has a voltage step-up ratio Voc, the power transmitting inductor has an inductance L1, the power receiving inductor has an inductance L2, and the power transmitting and power receiving antennas and have a coupling coefficient k, (L2 / L1)≧4(k / Voc)2 is satisfied. The absolute value of the phase difference θres between the respective resonant magnetic fields of first and second pairs of resonant antennas is set to fall within the range of 90 to 180 degrees.

Provided is a method of dividing a payload intra-frame for improving throughput of a carrier sensing multiple access / collision avoidance (CSMA / CA) wireless communication network. The payload intra-frame dividing method includes a data frame dividing step and a physical layer frame generating step in which a physical layer receives a plurality of data frames from an upper layer within a range of the maximum data frame length the physical layer can transmit and transmits the data frames as a single physical layer data frame. Furthermore, an acknowledge (ACK) frame is provided, which can minimize the deterioration of throughput even when a data frame, which has been divided into a plurality of data frames and transmitted as a single data frame, is required to be re-transmitted because an error is generated in the data frame.

In one embodiment of the present invention, each pixel includes first and second subpixels. CS bus lines connected to the respective storage capacitors of the first and second subpixels are electrically independent of each other. A CS voltage has a waveform that inverts its polarity at least once a frame, which includes a first subframe for sequentially scanning a series of odd rows and a second SF for sequentially scanning even rows that have been skipped during the first SF. A source signal voltage varies so as to have two frames or subframes with mutually opposite polarities. A CS voltage has a waveform that has quite opposite consequences on the effective voltage of a subpixel of a pixel connected to the jth scan line to be selected during the first subframe and on that of another subpixel of a pixel connected to the (j+1)th scan line to be selected during the second subframe. In this manner, the deterioration in display quality, which would be caused if either a source line inversion drive or a block inversion drive is applied to a multi-pixel technology, can be minimized.

In a range (R3) in which an amplitude component voltage (VA) of a modulation wave signal from an OFDM signal generation unit corresponds to the average output power, an output voltage of a first voltage conversion unit (voltage applied to a base or a gate) is fixed, thus allowing the class AB operation of a high-frequency power amplifier. In a range (R4) in which VA is larger than that in R3, the output voltage of the first voltage conversion unit is increased, thus varying the operating class of the high-frequency power amplifier from class AB to class A. In a range (R2) in which VA is smaller than that in R3, the output voltage of the first voltage conversion unit is decreased, thus varying the operating class of the high-frequency power amplifier from class AB to class B. The efficiency at the time of the average power can be improved without degrading the maximum output power of the high-frequency power amplifier included in a transmitter.

Disclosed are a frame error concealment method and apparatus and an audio decoding method and apparatus. The frame error concealment (FEC) method includes: selecting an FEC mode based on at least one of a state of at least one frame and a phase matching flag, with regard to a time domain signal generated after time-frequency inverse transform processing; and performing corresponding time domain error concealment processing on the current frame based on the selected FEC mode, wherein the current frame is an error frame or the current frame is a normal frame when the previous frame is an error frame.

Disclosed is a photographing apparatus using an infrared ray in a portable terminal, the apparatus includes: a camera module for photographing an image; a display unit for providing a preview for the image photographed by the camera module; and an infrared sensor unit for determining if light is obstructed by emitting and receiving an infrared ray through an infrared sensor upon photographing by the camera module, and outputting a photographing signal for the image.

A RF device such as a tower mounted amplifier (TMA), mast-head amplifier (MHA), or Tower Mounted Boosters (TMB) includes a housing having a plurality of cavities and an input and an output, the input being coupled to the antenna and the output being coupled to a base station. The housing includes a transmission path holding multiple coaxial resonators. The housing further includes multiple receive paths including at least one path having a plurality of cavities, each cavity containing a dielectric resonator. The metallic transmit resonator nearest the antenna input is coupled to the first dielectric resonator via a common resonant wire. The last dielectric resonator in the receive path is coupled to a first metallic resonator of a downstream clean-up filter via another common resonant wire.

Disclosed are a shift register, and a gate driving circuit including a plurality of shift registers connected in sequence to respectively supply scan signals to a plurality of gate lines of a display device. Each shift register includes: an input unit which outputs a directional input signal having a gate high or low voltage based on an output signal from a previous or subsequent shift register to a first node; an inverter unit which is connected to the first node, generates an inverting signal to a signal at the first node, and outputs the inverting signal to a second node; and an output unit which includes a pull-up unit connected to the first node and activating an output clock signal based on the signal at the first node, and a pull-down unit activating and outputting a pull-down output signal based on a signal at the second node.

An organic light emitting diode (OLED) display includes: a first substrate; a display portion that is formed on the first substrate and includes a driving circuit portion and an organic light emitting diode; a thin film encapsulation layer that covers the display portion; an adhesive layer that covers an upper surface and a side of the thin film encapsulation layer; an absorption functional layer that is formed on the adhesive layer and absorbs at least one of oxygen and moisture; and a second substrate that is formed on the absorption functional layer.

A reflective liquid crystal display panel is a display panel for three-dimensional display in which pixel pairs as display elements composed of one left-eye pixel L and one right-eye pixel R each are provided in a matrix. The lenticular lens is an optical member for image separation that is provided to separate the light from the left and right pixels, and numerous lenticular lenses form a lens array that is arranged in one dimension. An anisotropic scattering sheet as an anisotropic scattering element is provided between the lenticular lens and the reflective liquid crystal display panel. According to this configuration, a reduction in the quality of the reflective display can be minimized, and improved image quality can be achieved without changing the concavo-convex structure of the reflecting panel and the lens shape of the lenticular lens in display device that is capable of displaying different images to a plurality of viewpoints.

Disclosed herein is a branched (meth)acrylate copolymer prepared by polymerizing a monomer mixture comprising (A) about 20 to about 99.999% by weight of a (meth)acrylate monomer having a refractive index higher than methyl methacrylate; (B) about 0 to about 79.999% by weight of a mono-functional unsaturated monomer; and (C) about 0.001 to about 10% by weight of a crosslinking monomer. The copolymer has a refractive index of about 1.495 to about 1.590.

A video frame is input to a spectrum analyzer, which transforms the frame from a spatial domain into a frequency domain. A resolution determiner analyzes the output of the spectrum analyzer, thereby selecting a resolution appropriate for the video frame. Then, a resolution converter converts a resolution of the video frame into the resolution selected by the resolution determiner. Thereafter, the video frame is subjected to a coding process by block divider, DCT transformer, quantizer and variable-length coder so as to be output as a coded bit stream. By coding the input video frame at a resolution corresponding to the high-frequency component in the frame, a video of higher quality can be obtained with the bit rate reduced.

A hydrocarbon adsorption unit for recovery of volatile hydrocarbons which emanate from several sources and which would otherwise be released into the atmosphere through the air cleaner of an automobile engine when the engine is shut-off. The unit is positioned in the air intake system such that all air flowing through the engine passes through the unit. The unit comprises a housing having an air inlet and an air outlet. The housing contains a substrate and a volatile hydrocarbon adsorber material coated on the surface of the substrate. The adsorber material may be silica gel, a molecular sieve and / or activated carbon. The material further contains a binder that will cause the material to adhere to the surface of the substrate.

An organic thin-film transistor manufacturing method and an organic thin-film transistor manufactured by the method are disclosed, the method comprising the steps of a) forming a gate electrode on a substrate, b) forming a gate insulating layer on the substrate, c) forming an organic semiconductor layer on the substrate, d) forming an organic semiconductor layer protective layer on the organic semiconductor layer, e) removing a part of the organic semiconductor layer protective layer, and f) forming a source electrode and a drain electrode at portions where the organic semiconductor layer protective layer has been removed, so that the source electrode and drain electrode contacts the organic semiconductor layer.

In a wireless communication system based on an OFDM technology, a control channel and a low-speed data channel can be multiplexed without a reduction in the transmission speed of a traffic channel. In a communication system that is operated by multiplexing a traffic channel for performing high-speed data transmission and a control channel for performing low-speed control information transmission, an OFDM signal for transmitting the traffic channel and an OFDM signal for transmitting a control signal are multiplexed for transmission. In a receiving station, the control channel is first demodulated / decoded and a judgment is made as to whether or not any signal addressed to the self station is contained in a traffic channel signal. When any signal addressed to the self station is contained, the control channel signal is cancelled from the reception signal in accordance with a wireless channel quality and the traffic channel is demodulated.

A core assembly used for a wireless power transmitting device and a wireless power transmitting device having the same. The core assembly for the wireless power transmitting device includes: a main coil disposed at a first level; an auxiliary coil disposed at a lower side of the main coil such that the auxiliary coil is located at a second level lower than the first level, and including a first sub coil and a second sub coil, which respectively have a portion overlapped with the main coil and respectively have a size smaller than the main coil; and a core of a magnetic substance configured to accommodate the main coil and the auxiliary coil.

In a method of manufacturing a display substrate and a method of manufacturing a display panel, the display substrate includes a color filter layer disposed on a base substrate within a pixel area, a first organic insulating pattern disposed on a first boundary area between adjacent pixel areas, a pixel electrode disposed on the color filter layer, and a first blocking pattern disposed on the first organic insulating pattern. Accordingly, an organic insulating layer corresponding to the pixel area is removed so that deterioration of the display quality by impurities generated from the organic insulating layer may be minimized. In addition, a stepped portion of a blocking pattern disposed between a pixel area and a boundary area of a plurality of the pixel areas is reduced so that motion blurring of a liquid crystal may be prevented.

An organic thin-film transistor manufacturing method and an organic thin-film transistor manufactured by the method are disclosed, the method comprising the steps of a) forming a gate electrode on a substrate, b) forming a gate insulating layer on the substrate, c) forming an organic semiconductor layer on the substrate, d) forming an organic semiconductor layer protective layer on the organic semiconductor layer, e) removing a part of the organic semiconductor layer protective layer, and f) forming a source electrode and a drain electrode at portions where the organic semiconductor layer protective layer has been removed, so that the source electrode and drain electrode contacts the organic semiconductor layer.

An indexable insert has a rake face on which a first ridge (2) and a second ridge (3) are provided. The first ridge (2) protrudes from a boss surface (1) towards a nose, and the second ridge (3) extends continuously from the first ridge (2) to a slope (8) connected to a cutting-edge land (7) of a linear cutting edge (6). The second ridge (3) has a height lower than that of the first ridge (2) and is convex-curved towards a bisecting line (CL) of an apex angle of the nose in plan view, thereby achieving both enhanced chip processability and reduction of load received when raking a chip.