Patent application number | Description | Published |
20080316383 | METHOD FOR DETECTING STORAGE VOLTAGE, DISPLAY APPARATUS USING THE STORAGE VOLTAGE AND METHOD FOR DRIVING THE DISPLAY APPARATUS - A method for detecting a storage voltage, a display apparatus using the storage voltage and a method for driving the display apparatus. The method for detecting the storage voltage includes applying a test voltage to a storage line in a display panel having an active layer disposed between the storage line and a data line while varying the test voltage, the active layer being in an active state or an inactive state according to the test voltage, and detecting the storage voltage corresponding to the test voltage in an inactive state of the active layer. Thus, the display panel is driven by using the detected storage voltage, so that an aperture ratio may be increased and current consumption may be decreased. | 12-25-2008 |
20090009685 | POLARIZER AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A liquid crystal display includes a backlight unit, a liquid crystal display panel, and first and second polarizers. The first polarizer is attached to a lower portion of the liquid crystal display panel to face the backlight unit, and the second polarizer is attached to an upper portion of the liquid crystal display panel to correspond to the first polarizer. The liquid crystal display panel includes a first optical layer that partially reflects light provided from the backlight unit, and the first polarizer includes a second optical layer to prevent the light reflected by the first optical layer from being re-reflected to the liquid crystal display panel. | 01-08-2009 |
20090189677 | GATE DRIVING CIRCUIT AND DISPLAY APPARATUS HAVING THE SAME - A gate driving circuit includes stages, the stages being cascaded and each including: a pull-up part which pulls up a gate voltage to a clock signal during a horizontal scanning period (1H); a carry part which pulls up a carry voltage to the clock signal during the horizontal scanning period (1H); a pull-up driving part connected to a control terminal (Q-node) common to the carry part and the pull-up part and which receives a previous carry voltage from a first previous stage to turn on the pull-up part and the carry part; and a ripple preventing part which prevents a ripple generated at a previous Q-node of a second previous stage based on a ripple generated at the Q-node of the carry part and the pull-up part. | 07-30-2009 |
20110193891 | Three-Dimensional Image Display Device and Driving Method Thereof - A three dimensional image display device includes a display panel and shutter glasses. White image data is displayed during a white image data input period which is disposed before an input period of left eye image data or an input period of right eye image data. As a result, the luminance of a three dimensional image display device may be increased. | 08-11-2011 |
Patent application number | Description | Published |
20130183061 | IMAGE FORMING APPARATUS - An image forming apparatus includes a developing module which develops a toner image on a printing medium, a fixing module which fixes the toner image onto the printing medium, and a toner neutralization module arranged on a travel path of the printing medium between the developing module and the fixing module to electrically neutralize the toner image on the printing medium. | 07-18-2013 |
20140119788 | FUSING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fusing device having a structure which may improve fusing performance is provided. The fusing device includes a heating roller disposed to contact a surface of the recording medium to transfer heat thereto, an endless belt disposed to rotate together with the heating roller, and a pressing member to press an inner surface of the endless belt to allow a fusing nip to be formed between the heating roller and the endless belt. | 05-01-2014 |
20140376978 | IMAGE FIXING APPARATUS AND IMAGE FORMING APPARATUS HAVING THE SAME - An image fixing apparatus is provided including a pressing roller, a fixing belt rotatably disposed such that an outer circumferential surface of the fixing belt contacts the pressing roller, and a rotating bush to support rotation of the fixing belt. The fixing belt includes a load support member arranged in an axial direction, a heating layer formed on an outer circumferential surface of the load support member to generate heat, and an electrode layer provided with an first portion axially contacting the heating layer at an axial end of the load support member, the electrode layer transferring electric energy to the heating layer. An inner end of the rotating bush axially extends to an inner side of the electrode layer such that the electrode layer is supported by the rotating bush. The image fixing apparatus may uniformly form a fixing nip and improve durability of the fixing belt. | 12-25-2014 |
Patent application number | Description | Published |
20140186077 | FIXING DEVICE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS HAVING THE SAME - A fixing device is provided. The fixing device includes a backup member that is disposed outside an endless belt that is flexible and rotates to rotate the endless belt, a nip forming member that is disposed inside the endless belt and faces the backup member to form a fixing nip, and a heater that includes a heating layer including an electroconductive filler dispersed in a base polymer to form an electroconductive network and that is interposed in a position corresponding to the fixing nip between the nip forming member and the endless belt. | 07-03-2014 |
20140294471 | FIXING APPARATUS AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS INCLUDING THE SAME - A fixing apparatus includes a heating roller and a nip forming unit facing the heating roller to form a fixing nip. The heating roller includes a resistive heating layer receiving an electric current to generate heat, and a base material supporting the resistive heating layer, wherein a resistance per unit length of the resistive heating layer at opposite sides in a length direction is less than a resistance per unit length of the resistive heating layer at a center portion. | 10-02-2014 |
20150037077 | IMAGE FIXING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - Disclosed herein are an image fixing device and an image forming apparatus having the same. The image fixing device includes a fixing belt which is rotatably disposed, and a pressure roller which is disposed to be opposite to the fixing belt and thus to press an outer circumferential surface of the fixing belt, wherein the fixing belt includes a fixing part of which an outer surface has a first friction coefficient, and a meandering movement preventing part which is located at each of both ends of the fixing part in a length direction of the fixing belt, and of which an outer surface has a second friction coefficient greater than the first friction coefficient. By the configuration, a meandering movement of the fixing belt is prevented, and thus it is possible to improve fixing efficiency. | 02-05-2015 |