Patent application number | Description | Published |
20080291703 | SIGNAL CONVERTING APPARATUS AND SIGNAL CONVERSION METHOD - A signal converting apparatus is disclosed and includes a swing range converting unit converting an error signal swinging in a first swing range to an adjusted error signal swinging in a second swing range, an oscillator generating a periodic oscillation signal swinging in approximately the second swing range, and a comparator receiving and comparing the adjusted error signal and the oscillation signal, and generating a pulse-width modulated signal in relation to the comparison. | 11-27-2008 |
20100033415 | LIQUID CRYSTAL DISPLAY AND METHOD OF OPERATING THE SAME - A liquid crystal display includes; a liquid crystal panel, and a DC-DC converter which receives an input voltage to generate an analog drive voltage and a gate-on voltage used to operate the liquid crystal panel, wherein the DC-DC converter includes a pulse width modulation circuit which modulates a pulse width of the analog drive voltage and the gate-on voltage, a boost converter which boosts the input voltage to output the analog drive voltage, and a charge pump which boosts one of the input voltage and the analog drive voltage to output the gate-on voltage, wherein when a high voltage stress test is performed, the DC-DC converter outputs the analog drive voltage boosted to a voltage level higher than a voltage level of the analog drive voltage during a normal operation, and outputs the gate-on voltage having a voltage level substantially equal to a voltage level of the gate-on voltage during the normal operation. | 02-11-2010 |
20100085348 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device and a method of driving the same are provided. The display device includes a display panel including a plurality of pixels defined in an area where a plurality of gate lines and data lines cross one another, a clock generator generating a gate clock signal using a clock generation control signal provided from a timing controller and a gate-on voltage, and a gate driver providing a gate signal to the gate lines in response to the gate clock signal. The gate signal includes a pre-charge period having a first gate-on level and a main-charge period having a second gate-on level that is higher than the first gate-on level. | 04-08-2010 |
20120105424 | DISPLAY MODULE AND DISPLAY SYSTEM - Disclosed is a display module including a transparent display panel and a frame to fix a side of the transparent display panel, wherein the frame has a communication unit to receive data from the outside, a controller to process the received data and to output a drive command corresponding to the processed data and a display drive unit to drive the transparent display panel in response to the drive command from the controller. A display system includes a system body and a display module detachably mounted in the system body. | 05-03-2012 |
20130188327 | MULTI-DISPLAY DEVICE - A multi-display device includes a plurality of display devices. A display device of the plurality of display devices includes: a display panel including a front side, a rear side, first and second sides which face each other, and third and fourth sides which face each other; a first chassis which is fixed to the first side; a second chassis which is fixed to the second side; a third chassis which is fixed to the third side; a fourth chassis which is fixed to the fourth side; and a fixing member between one or more of the first to fourth chassis, and the display panel. The fixing member fixes the one or more of the first to fourth chassis, to the display panel. The fixing member is provided at a boundary between adjacent display devices of the plurality of display devices. | 07-25-2013 |
20140369070 | DISPLAY APPARATUS - A display apparatus includes a display panel, a first covering part, an upper frame and a lower frame. The first covering part is disposed on the display panel. The upper frame is disposed under the first covering part and includes a first combining portion. The lower frame is combined with the upper frame through the first combining portion, and overlaps a peripheral portion of the display panel. | 12-18-2014 |
20150331015 | FLUX-GATE TYPE NON-CONTACT CURRENT MEASURING DEVICE - The present invention relates to a flux-gate type non-contact current measuring device for measuring a current to be measured by detecting an electromagnetic field around a conducting wire into which the current to be measured flows, wherein the present invention can detect a direct current component through a change of an oscillating signal by applying the oscillating signal for magnetizing two cores in mutually opposite polarities, wherein: an LC oscillation circuit is formed by using the inductance of a coil wound on one core, and the direct current component is detected by applying an LC-oscillating signal to a coil wound on the other core; an alternating current component is detected by using another core; compensated currents corresponding to the detected direct current and alternating current components are converged under a condition of offsetting a magnetic flux by the current to be measured so that the current to be measured can be measured by measuring the compensated currents in the converged state thereof; and the present invention can normally measure a current by automatically demagnetizing an LC oscillating core even in a circumstance that the LC oscillating core is saturated by the current to be measured. | 11-19-2015 |