Patent application number | Description | Published |
20080211995 | Display Apparatus Using Microlens - Provided is a display apparatus using a micromirror or an image display device. The display apparatus is designed to eliminate dark regions, usually formed by pixel partitions or black matrixes, display a high-quality image by increasing light usage efficiency, and improve the power consumption. A display apparatus using a microlens includes a micromirror array, a substrate, and a microlens array. The micromirror array includes a plurality of micromirrors arranged to reflect incident light rays from a light source. The substrate supports the micromirror array. The microlens array includes a plurality of microlenses disposed between the light source and the micromirror array to condense the incident light rays from the light source upon the micromirror array and correct a traveling path of reflected light rays from the micromirror array. | 09-04-2008 |
20080303180 | METHOD OF MANUFACTURING ALL-IN-ONE TYPE LIGHT GUIDE PLATE - Provided is a method of manufacturing an all-in-one type light guide plate. The method includes: fabricating a master including a plurality of inverse-prism shape structures; forming an elastic mold by applying an elastomer on the master; and fabricating the all-in-one type light guide plate, on which a plurality of inverse-prism shape structures are integrally formed, by applying a light transmissive material on the elastic mold. | 12-11-2008 |
20090034295 | FRONT LIGHT UNIT AND FLAT PANEL DISPLAY APPARATUS HAVING THE SAME - Provided is a front light unit and a flat panel display apparatus that includes the front light unit. The front light unit includes a light source, a light guide plate that guides light emitted from the light source and comprises a rear surface through which the guided light is emitted and a front surface facing the rear surface, and a plurality of prism shape structures which are provided in one unit with the light guide plate and emits light totally reflected from the front surface of the light guide plate. The light guide plate and the prism shape structures are formed of a transparent elastic material. | 02-05-2009 |
20090129119 | LIGHT GUIDE MEMBER, LIGHTING APPARATUS USING THE LIGHT GUIDE MEMBER, AND METHOD OF FABRICATING THE LIGHT GUIDE MEMBER - Provided are a light guide member, a lighting apparatus including the light guide member, and a method of fabricating the light guide member. The light guide member comprises: a body, which is formed as a transparent plate, including a first surface and a second surface facing the first surface; and a plurality of dimple type optical controllers formed beneath at least one of the first surface and the second surface and having reflective surfaces that reflect light proceeding between the first and second surfaces of the body toward at least one of the first and second surfaces. | 05-21-2009 |
20090290096 | TRANSPARENT SEE-THROUGH DISPLAY DEVICE - There is provided a see-through display device. A see-through display device comprises a liquid crystal plate filled with liquid crystals; first and second orientation plates respectively positioned on upper and lower surfaces of the liquid crystal plate, and controlling an initial alignment state of the liquid crystals; first and second conductive plates respectively positioned on an upper surface of the first orientation plate and a lower surface of the second orientation plate, and being filled with a conductive material; first and second transparent plates respectively positioned on an upper surface of the first conductive plate and a lower surface of the second conductive plate; first and second polarizing plates respectively positioned on an upper surface of the first transparent plate and a lower surface of the second transparent plate; and a transparent light guide plate spaced apart from a lower surface of the second polarizing plate, and allowing beams incident from a light source positioned at one side thereof to be totally reflected and emitted upward. Accordingly, a see-through display device comprises a transparent optical display device and a transparent light guide plate having a light source disposed at one side thereof, so that the display device can be optically transparent even when it is not operated. | 11-26-2009 |
20110194419 | WIRELESS COMMUNICATION SYSTEM FOR EFFICIENT MULTICAST TRANSMISSION USING ADAPTIVE MODULATION AND CODING MECHANISM - Disclosed is a wireless communication system for efficient multicast transmission using an AMC scheme. The wireless communication system and the AMC scheme enable a user participating in a multicast group to be provided with efficient service, and provide more users with a multicast broadcast service through the AMC scheme using a proposed group MCS level determination algorithm. | 08-11-2011 |
20120086932 | HIGH RESOLUTION TIME-OF-FLIGHT DISTANCE MEASUREMENT DEVICE BASED ON FEMTOSECOND LASER - Disclosed is a high resolution time-of-flight distance measurement device based on a femtosecond laser, including a femtosecond laser light source, a polarization beam splitter, a balanced optical cross-correlator in which second harmonic pulses are generated using reference light and measurement light, wherein the second harmonic pulse that was primarily generated is incident on a first photodetector and the second harmonic pulse that was secondarily generated is incident on a second photodetector, so that a difference in intensity of the second harmonic pulses is output, thus resolving the time interval of the pulse laser, a controller for controlling the repetition rate of the femtosecond laser, and a converter for measuring the repetition rate of the femtosecond laser controlled so that the pulses uniformly overlap by means of the controller, using a frequency counter traceable to a time/frequency standard, so that a measured value is converted into distance information. | 04-12-2012 |
20130188392 | LIGHT GUIDE PLATE AND BACKLIGHT UNIT - Disclosed are a light guide plate and a backlight unit. The backlight unit according to the present invention includes: a light guide plate; a light source disposed on one side of the light guide plate; and a reflective plate disposed under the light guide plate, wherein, in the cross section of one side of the light guide plate, the light guide plate includes a plurality of unit slits including a first slit and a second slit, wherein the first slit and the second slit are inclined from a top surface toward the inside of the light guide plate with respect to a vertical direction of the top surface, and wherein the first slit and the second slit are symmetrical to each other with respect to the middle portion of the unit slit. | 07-25-2013 |
Patent application number | Description | Published |
20110221736 | GATE DRIVING CIRCUIT AND DISPLAY APPARATUS USING THE SAME - A gate driving circuit for driving a display apparatus is disclosed. The gate driving circuit properly generates gate voltages despite inconsistent transistor characteristics due to processing and environment by maintaining certain nodes in reliably high impedance states. | 09-15-2011 |
20110234564 | LIQUID CRYSTAL DISPLAY AND METHOD OF OPERATING THE SAME - A liquid crystal display (LCD) is disclosed. The LCD has improved display quality and/or power consumption because current leakage in the pixels is effectively reduced. | 09-29-2011 |
20110291095 | DISPLAY DEVICE - A display device including a display panel including a first pixel area and a second pixel area adjacent to the first pixel area; and a barrier positioned on a surface of the display panel, the barrier including: a first sub-barrier; and a second sub-barrier, wherein the first sub-barrier and the second sub-barrier are disposed between the first pixel area and the second pixel area to respectively cover an end of the first pixel area and an end of the second pixel area, in which the first pixel area and the second pixel area display a same first image, or the first pixel area displays any one of a first left-eye image and a first right-eye image and the second pixel area displays the other one of the first left-eye image and the first right-eye image. | 12-01-2011 |
20120026204 | THREE-DIMENSIONAL DISPLAY AND DRIVING METHOD THEREOF - A three-dimensional (3D) display is disclosed. One aspect includes: a display unit including a plurality of pixels and a slit barrier selectively shielding light irradiated from the display unit. The display unit additionally includes a controller controlling the turn-on and turn-off of the slit barrier and generating a first back light compensation signal compensating the reduction of the luminance of the display unit when the slit barrier is turned off and a second back light compensation signal compensating the reduction of the luminance of the display when the slit barrier is turned on to compensate the luminance reduction by the slit barrier. According to at least one aspect of the 3D display using a slit barrier scheme, it is possible to minimize the deterioration of luminance by a slit barrier. | 02-02-2012 |
20120044171 | LIQUID CRYSTAL DISPLAY INTEGRATED TOUCH SCREEN PANEL - A touch screen panel integrated liquid crystal display device in which a mutual capacitive touch screen panel is integrated with a liquid crystal display panel is provided. The device includes a first substrate, a plurality of pixels on the first substrate and including respective pixel electrodes, a second substrate facing the first substrate, a common electrode on a first surface of the second substrate facing the pixel electrodes, a plurality of sensor electrodes on a second surface of the second substrate and including a plurality of transparent pairs extending in a first direction and having a plurality of protrusions extending in a second direction crossing the first direction, and a liquid crystal layer between the substrates, wherein the device senses a touch position by detecting a change of capacitance applied to the sensor electrodes corresponding to an alternating current common voltage applied to the common electrode. | 02-23-2012 |
20120081330 | 3-dimensional flat panel display with built-in touch screen panel - A 3-dimensional (3D) flat panel display with a built-in touch screen panel includes a first substrate, a plurality of pixels on the first substrate, a plurality of first electrode patterns spaced apart from one another at a first predetermined interval along a first direction, the plurality of first electrode patterns for driving the plurality of pixels, a second substrate positioned to face the first substrate, and a plurality of barrier patterns formed on an outer surface of the second substrate and spaced apart from one another at a second predetermined interval along a second direction, intersecting the first direction. At least one of the plurality of first electrode patterns and at least one barrier pattern of the plurality of barrier patterns serve as electrodes for the built-in touch screen panel. | 04-05-2012 |
20120098848 | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND FLAT PANEL DISPLAY DEVICE - An image processing device, an image processing method, and a flat panel display are disclosed. According to some aspects, the image processing device may include: an image determining unit for determining a kind of an input image as one of a moving picture, a photograph image, and a user interface image. A legibility improving unit may be configured to generate a legibility improved image by extracting specific pixels from pixels included in the input image according to the kind of the input image that is determined by the image determining unit and by modifying gray scale values of the extracted specific pixels. According to some aspects, an illuminance sensor for sensing external illuminance, and a brightness improving unit for correcting a gamma curve according to the external illuminance sensed by the illuminance sensor is provided. Brightness may be controlled according to a kind of an image and external illuminance so that an image processing device may increase outdoor visibility of an image by controlling brightness according to the kind of image and the external illuminance. | 04-26-2012 |
20120098849 | Display Device Capable of Controlling Viewing Angle and Driving Method Thereof - A viewing angle controllable display device and a driving method thereof. The viewing angle controllable display device includes: an image mixing unit generating a mixed image data signal by mixing an original image data signal, or a gray-adjusted original image data signal, with a protection image data signal that disturbs recognition of the original image; an output image selecting unit receiving the original image data signal or the mixed image data signal, and selecting an image data signal corresponding to an image output to a display panel; and a display panel receiving a data voltage corresponding to the image data signal selected and output from the output image selecting unit through a data drive to display an original image or a mixed image, responding to gate signals sequentially transmitted from a gate driver. | 04-26-2012 |
20120105381 | LIQUID CRYSTAL DISPLAY WITH INTEGRATED TOUCH SCREEN PANEL - A liquid crystal display with an integrated touch screen panel is disclosed. According to some aspects, conductive patterns or conducting patterns provided to the LCD are used as driving electrodes of the touch screen panel. A driving electrode of the touch screen panel may be formed on one surface of a polarizing plate or window attached to the LCD so as to be positioned close to a contact point, thereby improving touch sensitivity. | 05-03-2012 |
20120105752 | LIQUID CRYSTAL DISPLAY WITH INTEGRATED TOUCH SCREEN PANEL AND DRIVING METHOD THEREOF - A liquid crystal display (LCD) with an integrated touch screen panel includes a plurality of pixels connected to a plurality of data lines and a plurality of gate lines, the gate lines being divided into a plurality of groups, a plurality of sensing electrodes, a plurality of common electrodes divided into a plurality of groups, a common electrode driver configured to simultaneously supply a driving signal to common electrodes within each group of the plurality of groups of the common electrodes, and to sequentially supply the driving signal to the plurality of groups of the common electrodes, and a gate driver configured to sequentially supply a gate signal to gate lines within each of the plurality of group of the gate lines. | 05-03-2012 |
20120113339 | Liquid crystal display with integrated touch screen panel - An LCD with an integrated touch screen panel includes a first substrate having a plurality of pixels formed thereon, wherein each pixel of the plurality of pixels is provided with a thin film transistor and a pixel electrode. A second substrate facing the first substrate, having a plurality of common electrodes formed inside thereof. The plurality of common electrodes is arranged in a first direction to correspond to the plurality of pixels. A plurality of sensing electrodes is outside of the second substrate and arranged in a second direction intersecting the first direction. A liquid crystal layer is between the first and the second substrates. A common electrode driver sequentially supplies a driving signal to the common electrodes and supplies a compensation signal having a phase opposite to the driving signal to the common electrodes. | 05-10-2012 |
20120146994 | 2D/3D Switchable Image Display Apparatus and Method of Displaying 2D and 3D Images - In a two-dimensional/three-dimensional (2D/3D) switchable image display apparatus and a method of displaying 2D and 3D images, the 2D/3D switchable image display apparatus may comprise: a data driver which outputs column data of an input image; a scan driver which controls a driving method of a plurality of odd scan lines and a plurality of even scan lines according to an input method and a display mode of the input image; a display panel which displays a 2D image or a 3D image by separately displaying the input image in odd lines and even lines; and a parallax device which generates binocular parallax between an image displayed in the odd lines and an image displayed in the even lines. | 06-14-2012 |
20120162208 | 2D/3D IMAGE DISPLAY DEVICE - A two-dimensional (2D)/three-dimensional (3D) image display device is disclosed. The 2D/3D image display device includes pixels each having a first subpixel and a second subpixel, wherein, in a 2D driving mode, the first subpixel and the second subpixel respectively display images for a same image signal based on data voltages corresponding to different gamma curves. | 06-28-2012 |
20120206383 | TOUCH SCREEN PANEL - A touch screen panel includes a display unit including a timing controller for receiving a vertical synchronizing signal and a horizontal synchronizing signal to display an image, a touch sensing unit including driving electrodes, a control signal generator for generating a control signal from the vertical synchronizing signal and the horizontal synchronizing signal, and a touch controller for supplying a driving signal to the touch sensing unit in response to the control signal from the control signal generator. | 08-16-2012 |
20120313866 | TOUCH SCREEN PANEL - A touch screen panel is disclosed. The touch screen panel includes a pixel unit, a touch sensing unit, and a data driver configured to provide data voltages to the pixel unit and to provide driving signals to the touch sensing unit. | 12-13-2012 |
20130033517 | DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME - A display apparatus, which adjusts a luminance value of an image, and a method for driving the same are disclosed. The display apparatus includes a first image conversion unit that converts first image data into a plurality of second image data each including a luminance value, a luminance analysis unit that determines quantities of luminance values of the second image data, and determines a distribution of the luminance values, and a luminance adjustment unit that adjusts the respective luminance values of the second image data based on the quantities. | 02-07-2013 |
20130076769 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a liquid crystal panel including a plurality of signal lines, a liquid crystal panel driving unit configured to provide a driving voltage to the plurality of signal lines, an image data judging unit configured to judge whether input image data is still image data or moving picture data, an image data correcting unit configured to correct moving picture data to output corrected moving picture to the liquid crystal panel driving unit, a plurality of light sources configured to provide a light to the liquid crystal panel, and a light source driving unit configured to detect a display region having a motion value larger than a reference value from among an image of which frame data is displayed, based on a comparison of current frame data of the moving picture data with previous frame data of the moving picture data. | 03-28-2013 |
20130154965 | TOUCH DETECTION SYSTEM AND DRIVING METHOD THEREOF - A touch sensing system for detecting at least one touch is provided. The touch sensing system includes a touch sensing unit having a plurality of touchable regions for outputting sensing signals of the at least one touch, an operating unit for determining difference values between the sensing signals and a baseline value, a group setting unit for grouping ones of the regions in which the difference values exist into one or more groups, and a threshold value determining unit for determining maximum difference values from the groups to determine first threshold values of the groups corresponding to the determined maximum difference values. The touch sensing system increases the correctness of the touch detection by adaptively changing the first threshold value in accordance with the touch strength. A method of driving the touch sensing system is also provided. | 06-20-2013 |
20130194494 | APPARATUS FOR PROCESSING IMAGE SIGNAL AND METHOD THEREOF - A video signal processing apparatus and a video signal processing method are provided. The video signal processing apparatus includes an image processing apparatus configured to receive and convert an external input image data signal into an output image data signal according to a color arrangement structure, wherein the image processing apparatus includes at least one current limiter to remap the external input image data signal with expanded number of bits. | 08-01-2013 |
20130271502 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - An organic light emitting display capable of improving display quality is disclosed. The organic light emitting display includes pixels positioned at intersections of scan lines and data lines, a data driver for generating data signals to be supplied to the data lines using second data, and a data processing unit for generating a second data whose bit value is changed in consideration of brightness distribution of first data items supplied from the outside. | 10-17-2013 |
20130307868 | DATA RENDERING METHOD, DATA RENDERING DEVICE, AND DISPLAY PANEL USING THE SAME - A plurality of data signals to be supplied to a first pixel and a second pixel formed by a first sub-pixel, two second sub-pixels, and two third sub-pixels on the display panel are rendered. Input data corresponding to a first sampling window with respect to the second sub-pixel of the first pixel among the input data applied to the stripe pattern is used to render a second data signal supplied to the second sub-pixel through filtering sampled input data for a color of the second sub-pixel. The first data signal to be supplied to the first sub-pixel is rendered through filtering of the input data of a second window unit for a color of the first sub-pixel with respect to the first sub-pixel of the first pixel among the sampled input data. | 11-21-2013 |
20130335439 | SYSTEM AND METHOD FOR CONVERTING COLOR GAMUT - A color gamut conversion system comprising a color gamut conversion function generator, a color gamut converter, and a scaler is disclosed. In some embodiments, the color gamut conversion function generator is configured to generate a color gamut conversion function for determining an intermediate color gamut located in a color space between a predetermined color gamut corresponding to a display panel of a display device and a standard color gamut, the color gamut converter is configured to receive input data supplied from an external image source and convert a color coordinate of the input data according to the generated color gamut conversion function and the scaler configured is to scale a value of the data converted by the color gamut converter, generate the value as output data, and transfer the output data. | 12-19-2013 |
20140022149 | DC-DC CONVERTER AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME - There are disclosed a DC-DC converter and an organic light emitting display including the same. The DC-DC converter includes a first voltage generator that has an inductor and a plurality of transistors, and converts an input voltage into a first voltage and outputs the first voltage to a first output terminal. The DC-DC converter also includes a controller that controls driving of the first voltage generator by supplying a first driving pulse to each transistor of the first voltage generator. In the DC-DC converter, the amplitude of the first driving pulse is adjustable. Accordingly, it is possible to provide a DC-DC converter and an organic light emitting display including the same, which can achieve high power conversion efficiency by change a driving pulse used in a DC-DC converter. | 01-23-2014 |
20140028700 | DEVICE AND METHOD FOR MAPPING COLOR GAMUT - A device for mapping a color gamut includes a color gamut determinator and a color gamut mapper. The color gamut determinator determines an output color gamut using a gain value corresponding to information of a first color gamut, information of a second color gamut and a control condition. The color gamut mapper converts the color gamut of an input image data into the output color gamut. Accordingly, it is possible to provide a device and method for mapping a color gamut, which can determine an optimal color gamut corresponding to a change in control condition, and accordingly improve color accuracy and color reproducibility. | 01-30-2014 |
20140063078 | METHOD OF CONTROLLING A DIMMING OPERATION, DIMMING OPERATION CONTROL DEVICE, AND FLAT PANEL DISPLAY DEVICE HAVING THE SAME - A method of controlling a dimming operation is disclosed. In one aspect, the method includes determining the brightness of an input image frame based on input image data, determining an input dimming value based on the brightness of the input image frame, selectively performing the dimming operation is based on a comparison of an absolute value of a difference between the input dimming value and a current output dimming value against a predetermined threshold value, where a value generated by adjusting the current output dimming value by a predetermined adjustment value is output as a next output dimming value when performing the dimming operation, and the input dimming value is output as the next output dimming value when not performing the dimming operation. | 03-06-2014 |
20140085170 | METHOD OF OPERATING AN ORGANIC LIGHT EMITTING DISPLAY DEVICE, AND ORGANIC LIGHT EMITTING DISPLAY DEVICE - A method of operating an organic light emitting display device including a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel, wherein a first gamma voltage for the red, green and blue sub-pixels and a second gamma voltage for the white pixel are adjusted such that a sum of maximum luminances of the red, green and blue sub-pixels is substantially equal to a luminance of a white color displayed by the organic light emitting display device. With respect to a white portion of input data, a ratio of first data of the red, green and blue sub-pixels to second data of the white sub-pixel is adjusted based on a first accumulated driving amount of the red, green and blue sub-pixels and a second accumulated driving amount of the white sub-pixel. | 03-27-2014 |
20140118426 | DISPLAY DEVICE, APPARATUS FOR COMPENSATING DEGRADATION AND METHOD THEREOF - A display device includes: a plurality of pixels; a degradation compensator for using a temperature weight value for a reference temperature, a luminance weight value for a reference luminance, and a material weight value for a reference material, for calculating a reference using time when a degradation rate of the pixels is changed to a reference degradation rate of a reference degradation curve, and for generating a control variable according to the reference using time; and a power supply for controlling a voltage difference between a first power source voltage for supplying a driving current to the pixels and a second power source voltage according to the control variable. | 05-01-2014 |
20140152705 | PIXEL ARRAY AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME - A pixel array and an organic light emitting display device including the same, can display an image with uniform luminance by compensating for a variation in threshold voltage/mobility of a driving transistor for each pixel and compensating for a change in efficiency due to degradation of an organic light emitting diode. A first pixel among the pixel array includes an organic light emitting diode; a pixel circuit positioned among an anode electrode of the organic light emitting diode, a first scan line and a first data line through which a data signal is supplied to the first pixel, and controlling current flowing in the organic light emitting diode; and a switching element controlling the coupling between a second data line through which a data signal is supplied to a second pixel of the plurality of pixels and the anode electrode of the organic light emitting diode. | 06-05-2014 |
20140198028 | DISPLAY PANEL DRIVER, METHOD OF DRIVING DISPLAY PANEL USING THE SAME AND DISPLAY APPARATUS HAVING THE SAME - A display panel driver including a moving image determining part, a sensing part and a dithering part. The moving image determining part determines whether an input image data represents a moving image or a static image. The sensing part senses a movement of a display apparatus or a user of the display apparatus. The dithering part performs a dithering operation to the input image data when the input image data represents the moving image or when at least one of the display apparatus and the user moves when the input image data represents the static image. | 07-17-2014 |
20140210737 | MOBILE DEVICE AND METHOD FOR OPERATING THE SAME - A mobile device including a first display, a second display, a foldable coupling portion for coupling the first display to the second display, an angle sensing unit for sensing a folding angle between the first display and the second display, a direction-of-sight sensing unit for sensing a direction of sight of a user, and a controller for determining whether to use a touch input sensed by either the first display or the second display based on the sensed folding angle and the sensed direction of sight. | 07-31-2014 |
20140240366 | DISPLAY DEVICE FOR REDUCING DYNAMIC FALSE CONTOUR - A display device with reduced dynamic false contouring effect is disclosed. In one aspect, the device includes a display unit including a plurality of pixels and a timing controller. The timing controller is configured to determine a grayscale value of an image frame based on a grayscale distribution of the image frame. The controller is further configured to determine an arrangement of sub-frames as a driving mode based on the determined grayscale. | 08-28-2014 |
20140285533 | DISPLAY DEVICE, DATA PROCESSING DEVICE FOR THE SAME, AND METHOD THEREOF - A data processing device includes a gamma processor applying a gamma function to grayscale data including red grayscale data, green grayscale data, and blue grayscale data to generate luminance data including red luminance data, green luminance data, and blue luminance data, a first compensation coefficient generator generating a first compensation coefficient, a second compensation coefficient generator calculating a first grayscale ratio of the blue grayscale data and a second grayscale ratio of the red grayscale data, and generating a second compensation coefficient, a data compensation coefficient generator generating a data compensation coefficient by multiplying the first compensation coefficient and the second compensation coefficient, a data compensator generating compensation luminance data by adding the luminance data to a value of the data compensation coefficient multiplied by the luminance data, and an inverse processor generating compensation grayscale data. | 09-25-2014 |
20140306979 | APPARATUS FOR COMPENSATING COLOR CHARACTERISTICS IN DISPLAY DEVICE AND COMPENSATING METHOD THEREOF - An apparatus and method for compensating color characteristics in individual display devices that each include a display unit including a plurality of pixels to display images according to compensated image data signals, a test data input section to transmit a predetermined test image data signal to the pixels to display a test image, a luminance measuring unit to receive luminance information from the display unit displaying the test image and determine actual luminance ratios of a first color, a second color, and a third color from the received luminance information, a compensation ratio determiner to calculate a compensation ratio from both the actual and reference luminance ratios of each color and a data compensator to generate the compensated image data signals by adjusting external input video signals according to the compensation ratio. | 10-16-2014 |
20140347285 | TOUCH SCREEN DISPLAY DEVICE - Rather than crowding all functionalities into a single monolithically integrated circuit and thus causing concentration of power dissipation, there is provided a touch screen display device in which a multifunctional smart IC is separated from a simplified display driver circuit. The smart IC includes a logic unit for driving a touch screen panel and a logic unit for driving a display panel. The touch screen display device includes not only the touch screen panel, the display panel, the simplified display driver circuit and the smart IC but may further optionally include a controllable power supply that is controlled by the smart IC. The smart IC includes a first logic unit for driving the touch screen panel and a second logic unit for driving the display panel. The display driver circuit is coupled to receive pre-processed display data and a driving synchronization signal from the second logic unit of the smart IC. | 11-27-2014 |
20140354713 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device, including pixels positioned at crossing regions of scan lines and data lines and a bias voltage supply configured to supply bias voltages to the pixels. Each of the pixels includes an organic light emitting diode (OLED), a first transistor coupled between a first power supply and the OLED and driven in a saturation region by a corresponding one of the bias voltages to supply a set current to the OLED, a second transistor coupled between the first power supply and the OLED and driven in a linear region by a data signal supplied from a corresponding one of the data lines to turn on or off, and a second capacitor coupled between a gate electrode of the first transistor and the first power supply. | 12-04-2014 |
20150097876 | IMAGE STICKING CONTROLLER AND METHOD FOR OPERATING THE SAME - An image sticking controller includes a gamma conversion unit configured to gamma-convert gray scale values respectively corresponding to a plurality of pixels, and to output the gamma-converted gray scale values as gamma conversion values, a data accumulation unit configured to accumulate the gamma conversion values into an accumulation data, the accumulation data including a minimum accumulation value, a maximum difference value indicating a difference between the minimum accumulation value and a maximum accumulation value, and difference values indicating respective differences between the minimum accumulation value and an accumulation value of each of the pixels, an image sticking analysis unit configured to output an image sticking decrease control signal when the maximum difference value is greater than a reference value, and a data conversion unit configured to convert the gray scale values in response to the image sticking decrease control signal, such that image sticking is reduced. | 04-09-2015 |
20150130866 | ORGANIC LIGHT-EMITTING DIODE (OLED) DISPLAY AND METHOD FOR DRIVING THE SAME - An organic light-emitting diode (OLED) display and method for driving the same are disclosed. In one aspect, the OLED display includes a plurality of pixels and a compensation unit configured to receive first image data including a gray scale value for each pixel. The compensation unit accumulates the first image data to generate accumulated data, selects a data compensation method for each pixel based at least in part on the accumulated data, and compensates the gray scale value included in the first image data for each pixel based at least in part on the selected data compensation method to generate second image data. The OLED display also includes a data driver configured to convert the second image data into data signals and apply the data signals to the pixels. | 05-14-2015 |
20150194096 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - An organic light emitting display device includes a plurality of pixels in a display area; a data driver configured to supply a data signal to the pixels; and a data converter configured to output a correction image data utilized in generation of the data signal, and the data converter is configured to generate a stress data corresponding to an input image data, to accumulate and store at least a portion of the stress data in a compressed state, and to generate the correction image data obtained by correcting the input image data according to the accumulated stress data. | 07-09-2015 |
20150243201 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - An organic light emitting display and a method for driving the organic light emitting display. The organic light emitting display includes a display unit, a data accumulator, and a data compensator. The display unit is configured to be driven by image data. The data accumulator is configured to compress and accumulate first data corresponding to a first portion of the image data for driving a first region of the display unit, identify a second region of the display unit from the first region by analyzing the accumulated first data, and compress and accumulate second data corresponding to a second portion of the image data for driving the second region with a compression ratio based on a size of the second region. The data compensator is configured to compensate the image data based on the accumulated first and second data. | 08-27-2015 |
20150243216 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - A controller for a display device includes an adjuster and a compensator. The adjuster adjusts at least one parameter of a modeling equation based on a measured current of a pixel. The modeling equation including the at least one adjusted parameter is indicative of a real time degree of degradation of the pixel. The compensator compensates for image data corresponding to emission of light from the pixel. | 08-27-2015 |
20150340007 | DATA RENDERING METHOD AND DATA RENDERING DEVICE - A plurality of data signals to be supplied to a first pixel and a second pixel formed by a first sub-pixel, two second sub-pixels, and two third sub-pixels on the display panel are rendered. Input data corresponding to a first sampling window with respect to the second sub-pixel of the first pixel among the input data applied to the stripe pattern is used to render a second data signal supplied to the second sub-pixel through filtering sampled input data for a color of the second sub-pixel. The first data signal to be supplied to the first sub-pixel is rendered through filtering of the input data of a second window unit for a color of the first sub-pixel with respect to the first sub-pixel of the first pixel among the sampled input data. | 11-26-2015 |