Lg Philips Lcd Co., Inc.

Other

Lg Electronics Inc.

Samsung Electronics Co., Ltd.

Lg Display Co., Ltd.

Goldstar, Co., Ltd.

Lg.phillips Lcd Co., Ltd.

Lee, Hyun Chang

Hyun Chang Lee

Chang Yeon Kim

Seong Moh Seo

Hyun Ho Shin

Young Jin Oh

Yu Soong Kim

Yong Hoon Choi

Seong Jin Kim

Seong Jae Kim

Hyun Jae Kang

Keuk Sang Kwon

Won Gyun Youn

Sung Sik Park

Kwang Sub Yoon

Boo Hyun Ham

Yong Kug Bae

Bum Joon Youn

A method for detecting an electric leakage point without interrupting a power supply is provided. The method includes transmitting a unipolar direct current (DC) survey voltage signal to an electric wire of the power supply. The method includes transmitting a chain of electromagnetic wave signals generated around the electric wire to synchronize a reference time to measure an earth potential of the unipolar DC voltage signal and capture an electromagnetic tracking signal. The method includes tracing a buried route of the electric wire by analyzing the electromagnetic tracking signal according to the reference time. The method includes measuring the earth potential of the unipolar DC voltage signal on the ground according to the reference time. The method includes locating the electric leakage point by identifying a polarity of the unipolar DC voltage signal.

Method of detecting earth leaking point without interrupting a power supply

The present disclosure relates to a method and manufacturing method for a tire tread composition having absorption properties with high electric conductivity and excellent wear resistance. Specifically, the present disclosure relates to the fabrication of a tire composition to be used as a non-pneumatic tire, the tire composition can be used as a mobile electrode with a water supply means that can identify the location of defects in the buried conductor using the tire electrode manufacturing with improved conductivity and contact resistance with the ground even though the tire compound has wear resistance by lowering the water swelling rate compared to the previous technology.

Tire composition

In an exemplary embodiment of the present disclosure for solving the problem, disclosed is a stability-improved high voltage power line path exploration apparatus. The stability-improved high voltage power line path exploration apparatus for tracking a high voltage power line and determining a buried path and a connection configuration up to a final power source of a power distribution system, wherein the high voltage power line is connected to a primary winding of a distribution transformer to supply voltage and current, wherein the distribution transformer converts high voltage for distribution to low voltage in proportion to a ratio of a winding combination may include: an exploration current generator for generating a current pulse signal in inverse proportion to a winding ratio for detecting a magnetic field signal around the high voltage power line, in which the exploration current generator is connected to a secondary winding of the distribution transformer; a buried path probe for tracking the buried path and connection configuration of the high voltage power line by detecting the magnetic field signal which is generated around the high voltage power line when the current pulse signal flows through the high voltage power line; and a reverse current limiter for suppressing a generation of a reverse magnetic field generated by an external conductor of the high voltage power line, to improve a reception performance of the buried path probe.

Device and method for detecting high-voltage power distribution line path having improved stability

The device for detecting a leak may include: an earth voltage measuring unit measuring earth voltage; an ADC unit sampling the measured earth voltage and converting the sampled earth voltage into a digital value; an effective value calculating unit calculating an effective value of the earth voltage converted into the digital value; a Fourier transforming unit performing Fourier transform of the measured earth voltage to calculate voltage for each harmonic component; a content rate calculating unit calculating a voltage content rate of the fundamental frequency to voltage; a harmonic distortion rate calculating unit calculating a total harmonic distortion and a harmonic distortion factor based on the voltage for each harmonic component; a zero-crossing estimating unit estimating a zero-crossing count; and a suspicious earth leaking area determining unit determining that the earth voltage is generated by the leak of the AC commercial power.

Device and method for enhancing accuracy of detecting leakage current

A method of forming a pattern of a semiconductor device includes forming a mask and a sacrificial layer on a substrate, etching the sacrificial layer in a first area of the substrate to form first units, each having a first width and a first distance from an adjacent unit, etching the sacrificial layer in a second area of the substrate to form second units, each having a second width equal to the first distance and being spaced apart from an adjacent unit by a second distance equal to the first width, forming a spacer conformally covering the first and second units, the spacer having a first thickness and being merged between the second units, removing a portion of the spacer on upper surfaces of the first and second units, and etching the mask in a region from which first and second units have been removed.

Method of forming pattern of semiconductor device

A survey voltage transmitter includes a diode, a resistor, a first connection wire connected to a hot wire of AC power at a place, a second connection wire connected to a neutral wire of the AC power, a switching unit for turning on/off a circuit connected between the hot wire and the neutral wire to control a current flow through the diode and the resistor connected in series, a switching control unit for controlling a switch time of the circuit by providing a time control signal to the switching unit to turn on the circuit at a predetermined phase angle of the AC power and turn off the circuit before a half wave extinction phase angle of the AC power, and a coding unit for controlling the switching control unit to generate the current flow or not and for generating a series of logic values corresponding to the current flow.

Survey signal transmitter

The present invention relates to a device and a method for, while moving, acknowledging the laying path of an electric line and simultaneously acknowledging the increasing point of ground potential, thereby being capable of updating information of the laying path of the electric line and simultaneously obtaining maintenance data. The present invention has developed a logic capable of classifying and determining a detection signal current when the detection signal current is distributed in several paths and flows according to association between multiple earthling of a neutral line and a new renewable energy source, and has specified a method for analyzing a signal generation and a signal reception for accurately distinguishing the magnetic field signal direction and logic.

Mobile electric leakage detection device and method

An active matrix liquid crystal display apparatus that is adaptive for eliminating a flicker and a residual image as well as simplifying the circuit configuration thereof. In the apparatus, a plurality of pixels each includes a switching transistor having a second electrode connected to a gate electrode, a first electrode and a pixel electrode. Each of pluralities of data signal lines is connected to the second electrode associated with any one of the transistors, and each of pluralities of gate signal lines is connected to the gate electrode associated with any one of the transistors. A gate driver is connected to the plurality of gate signal lines, and it receives first and second voltages and outputs any one of the first and second voltages to drive the gate signal lines sequentially. The first voltage changes prior to exciting of successive gate signal lines.

Active matrix liquid crystal display

A residual image eliminating apparatus and method for a liquid crystal display device is adaptive for eliminating residual images emerging on a screen after power-off due to electric charges accumulated in pixel cells. In the apparatus, upon power-on, a first voltage level for turning off thin film transistors is applied to gate lines. Upon power-off, a higher level voltage than a ground voltage is applied to the gate lines. At this time, a voltage at the gate line is raised into a voltage level capable of opening a channel of the thin film transistor, thereby discharging an electric charge charged in a pixel. As a result, residual images are rapidly eliminated from the liquid crystal panel upon power-off.

Apparatus and method for eliminating residual image in a liquid crystal display device

A reset method and apparatus for a color liquid crystal display device that is capable of reducing a reset interval of a panel to increase a lighting time of a back light. In the method and apparatus, a reset voltage is simultaneously applied to all liquid crystal cells of the liquid crystal display device to reset the liquid crystal display device. Accordingly, all the liquid crystal cells are simultaneously reset by utilizing a common voltage or a gate voltage, so that the reset interval can not only be dramatically shortened to reduce flicker, but also color interference among red, green and blue colors can be eliminated to prevent color blur.

Reset method and apparatus for liquid crystal display

A method of driving a liquid crystal display panel that is adaptive for providing the entire panel with a brightness uniformity. In the method, the scanning direction of the panel is inverted at a desired period, for example, every frame, or within a frame. Accordingly, the average turn-on interval of all of the pixels within the panel becomes equal, so that the brightness of the entire panel can be uniform.

Liquid crystal display panel and associated method for driving

An in-plane switching mode liquid crystal display device comprises first and second substrates, a plurality of gate and data bus lines defining pixel regions and arranged on the first substrate, a plurality of data electrodes on same plane of the data bus lines these some parts are overlapped with adjacent gate bus line, a passivation layer on the data electrodes, a plurality of common electrodes on the passivation layer these some parts are overlapped with adjacent data electrodes, and a liquid crystal layer between the first and second substrates.

In-plane switching mode liquid crystal display device and method of manufacturing the same

A data interface device is constructed to minimize electromagnetic interference in a liquid crystal display device. The data interface device has a data input arranged to input data which is synchronized with a desired frequency of a data clock. A clock modulator modulates the data clock to provide a modulated clock signal having a frequency within a certain range of frequency so as to minimize EMI when data is transmitted using the data clock. A variable data transmission speed controller responds to the data clock and the modulated clock in such a manner that a transmission speed of the data is varied in a manner to minimize EMI.

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Seoul, South Korea

Hyun Chang Lee