Abstract: An organic light emitting diode display includes a panel assembly for displaying an image and a first surface stress enhancing member arranged on a rear surface of the panel assembly. In one embodiment, the organic light emitting diode display includes a second surface stress enhancing member arranged on a front surface of the panel assembly. In anther embodiment, the organic light emitting diode display includes a lower bezel arranged on a rear surface of the first surface stress enhancing member and a shock absorption tape arranged between the first surface stress enhancing member and the lower bezel. The structure of the organic light emitting diode display efficiently prevents damages caused by an external impact.

Abstract: In an organic light emitting display and its driving method, a pixel portion includes a plurality of pixels which express images corresponding to a scan signal, an emission control signal, and a data signal. A scan driver transfers the scan signal and the emission control signal to the pixel portion. A data driver generates and transfers a plurality of data signals to the pixel portion using video data. A frame memory stores and transfers the video data in frame periods to the data driver. A luminance controller determines a pulse of the emission control signal using frame data, which is a sum of video data stored in the frame memory. A power supply unit supplies voltages of first and second power sources to the pixel portion. The luminance controller determines the number and widths of pulses in the emission control signal corresponding to a sum of the video data.

Abstract: A display driven by a data signal and a light emission signal may be controlled by a control system including a first through fourth controller. The first controller may select a gamma value in accordance with ambient illumination and output a corresponding gamma compensation signal to control a gradation voltage of input image data. The second controller may compare the ambient illumination with a reference value, generate a selection signal in response thereto, and provide changed image data obtained by changing input image data in accordance with the selection signal as the data signal. The third controller may apply a scaling factor to the input image data generated from extracted features related to the input image data and a scale ratio obtained from the extracted features, and output scaled image data as the data signal. The fourth controller may control a pulse width of the emission control signal.

Abstract: Disclosed are an organic electro luminescence display and a driving method of the same. The present invention provides an organic electro luminescence display including a pixel unit for displaying an image to correspond to a scan signal, a light emission control signal and a data line. The image is composed of a plurality of frames. The organic electro luminescence display of the present invention includes a scan driver for supplying the scan signal and the light emission control signal to the pixel unit, a data driver for generating a data signal with a video data to supply the generated data signal to the pixel unit, a control unit for controlling a pulse width of the light emission control signal using a frame data which is the sum of the video data inputted to one frame and controlling one frame time according to the size of the frame data, and a power supply unit for supplying a first power and a second power to the pixel unit.

Abstract: An organic electro luminescence display and driving method uses an image determination unit to generate image determination signals indicative of whether images generated in response to data signals are moving images still images, selects a gamma value corresponding to the brightness of the ambient light sensed, applies gamma correction signals corresponding to selected gamma values to control grey level voltages of the data signals, generates a selection signal based on a comparison of a previously set reference value with the photo sensor signal, and generates R?,G?,B? data to vary an input image RGB data to correspond to the selection signal, varies a change range of the changing R?,G?,B? data to correspond to the image determination signal, and supplies the varied change range of the changing data (R?,G?,B? data) to the data driver.

Abstract: An organic light emitting display capable of controlling brightness responsive to a user request. The display includes a brightness controller for controlling the brightness of a display region. The brightness controller includes a first look up table for storing widths of emission control signals corresponding to the image data of one frame period and a second look up table for storing at least one outside input mode for changing the widths of the emission control signals responsive to the outside input modes. By forming virtual look up tables, it is possible to vary the outside input modes in response to a user request in order to change the brightness of the display region while saving memory. Controlling the brightness of the display region also allows reducing power consumption, preventing the eyes of a user from getting tired, and maintaining image contrast of the display region.

Abstract: An organic light emitting display includes a brightness controller that restricts the total brightness of a pixel unit when the number of pixels that emit bright light is greater than a predetermined level.

Abstract: An organic electro-luminescent display and a making method of the same. The organic electro-luminescent display according to the present invention includes a luminance control unit including a data sum-up unit to generate a frame data; a look-up table for storing an information corresponding to the light emission control signal to correspond to the frame data; an operator unit to generate a look-up table by using a value at the beginning step of luminance reduction, a value at the final step of luminance reduction, a pulse width of the light emission control signal at the beginning step of luminance reduction, and a pulse width of the light emission control signal at the final step of luminance reduction; and a luminance control signal driver for outputting a luminance control signal using the information corresponding to the light emission control signal stored in the look-up table.

Abstract: A double-sided organic electroluminescent display is constructed with an optical shutter. The organic electroluminescent display which includes an image displaying part comprising a plurality of pixels to display an image corresponding to a data signal and a selection signal, an optical shutter provided on the image displaying part to transmit or block light in response to a control signal, and a driver circuit to supply the data and selection signals to the plurality of pixels and the control signal to the optical shutter, respectively is excellent in visual recognition.

Abstract: An organic light emitting display capable of reducing power consumption and controlling brightness in response to the intensities of peripheral light. The organic light emitting display includes a data driver for supplying data signals to data lines, a scan driver for sequentially supplying scan signals to scan lines and sequentially supplying emission control signals to emission control lines, a display region including a plurality of pixels for receiving the data signals, the scan signals and the emission control signals to display images and a brightness controller for controlling the brightness of the display region. The brightness controller controls the brightness of the display region in response to the data of one frame and the intensities of peripheral light. This system reduces power consumption, controls the brightness of the display region in response to the intensities of the peripheral light and improves the contrast of the display region.

Abstract: A light emitting display device for controlling brightness according to peripheral light brightness and emission amount of a display region. The light emitting display device includes a display region including a pixel adapted to emit light in response to data, scan, and emission control signals, a controller for controlling brightness of the display region, a scan driver for supplying the scan signal and controlling a signal width of the emission control signal according to a signal from the controller, a data driver for transmitting the data signal corresponding to video data, the data signal being corrected using a gamma correcting signal from the controller, and a power source supply unit for supplying power to the display region. The controller outputs the gamma correcting signal corresponding to peripheral light and controls an amount of current supplied to the display region according to a sum of the video data in one frame.

Abstract: A light emitting display including a pixel area having a plurality of pixels, a scan driver for outputting a scan signal for selecting a predetermined pixel among the plurality of pixels of the pixel area, and an emission control signal for allowing a current to flow in the selected pixels. The scan driver includes: a signal generator adapted to generate the scan signal and the emission control signal; a first buffer adapted to transmit the scan signal to the pixel area; and a second buffer adapted to transmit the emission control signal to the pixel area. In the scan driver, the second buffer is smaller than the first buffer. The size of the second buffer is decreased to decrease the size of the scan driver, and/or to decrease the size of the predetermined pixel to get a high definition.

Abstract: An organic light emitting diode display includes a panel assembly for displaying an image and a first surface stress enhancing member arranged on a rear surface of the panel assembly. In one embodiment, the organic light emitting diode display includes a second surface stress enhancing member arranged on a front surface of the panel assembly. In anther embodiment, the organic light emitting diode display includes a lower bezel arranged on a rear surface of the first surface stress enhancing member and a shock absorption tape arranged between the first surface stress enhancing member and the lower bezel. The structure of the organic light emitting diode display efficiently prevents damages caused by an external impact.

Abstract: The present invention provides an organic light emitting display and a driving method the same capable of improving image quality by reducing luminance variations depending on temperature. The organic light emitting display and a driving method of the present invention includes a temperature sensor unit sensing ambient temperature and outputting temperature compensation signals corresponding to the ambient temperature, a light sensor unit sensing ambient light and outputting light control signals corresponding the ambient light, a correction unit generating gamma correction signals corresponding to the temperature compensation signals and the light control signals, and a data driver generating data signals corresponding to the gamma correction.

Abstract: In an organic light emitting display and its driving method, a pixel portion includes a plurality of pixels which express images corresponding to a scan signal, an emission control signal, and a data signal. A scan driver transfers the scan signal and the emission control signal to the pixel portion. A data driver generates and transfers a plurality of data signals to the pixel portion using video data. A frame memory stores and transfers the video data in frame periods to the data driver. A luminance controller determines a pulse of the emission control signal using frame data, which is a sum of video data stored in the frame memory. A power supply unit supplies voltages of first and second power sources to the pixel portion. The luminance controller determines the number and widths of pulses in the emission control signal corresponding to a sum of the video data.

Abstract: Disclosed are an organic electro luminescence display and a driving method of the same. The present invention provides an organic electro luminescence display including a pixel unit for displaying an image to correspond to a scan signal, a light emission control signal and a data line. The image is composed of a plurality of frames. The organic electro luminescence display of the present invention includes a scan driver for supplying the scan signal and the light emission control signal to the pixel unit, a data driver for generating a data signal with a video data to supply the generated data signal to the pixel unit, a control unit for controlling a pulse width of the light emission control signal using a frame data which is the sum of the video data inputted to one frame and controlling one frame time according to the size of the frame data, and a power supply unit for supplying a first power and a second power to the pixel unit.

Abstract: An organic electro-luminescent display and a making method of the same. The organic electro-luminescent display according to the present invention includes a luminance control unit including a data sum-up unit to generate a frame data; a look-up table for storing an information corresponding to the light emission control signal to correspond to the frame data; an operator unit to generate a look-up table by using a value at the beginning step of luminance reduction, a value at the final step of luminance reduction, a pulse width of the light emission control signal at the beginning step of luminance reduction, and a pulse width of the light emission control signal at the final step of luminance reduction; and a luminance control signal driver for outputting a luminance control signal using the information corresponding to the light emission control signal stored in the look-up table.

Abstract: An organic electro luminescence display and driving method uses an image determination unit to generate image determination signals indicative of whether images generated in response to data signals are moving images still images, selects a gamma value corresponding to the brightness of the ambient light sensed, applies gamma correction signals corresponding to selected gamma values to control grey level voltages of the data signals, generates a selection signal based on a comparison of a previously set reference value with the photo sensor signal, and generates R?,G?,B? data to vary an input image RGB data to correspond to the selection signal, varies a change range of the changing R?,G?,B? data to correspond to the image determination signal, and supplies the varied change range of the changing data (R?,G?,B? data) to the data driver.

Abstract: A display driven by a data signal and a light emission signal may be controlled by a control system including a first through fourth controller. The first controller may select a gamma value in accordance with ambient illumination and output a corresponding gamma compensation signal to control a gradation voltage of input image data. The second controller may compare the ambient illumination with a reference value, generate a selection signal in response thereto, and provide changed image data obtained by changing input image data in accordance with the selection signal as the data signal. The third controller may apply a scaling factor to the input image data generated from extracted features related to the input image data and a scale ratio obtained from the extracted features, and output scaled image data as the data signal. The fourth controller may control a pulse width of the emission control signal.

Abstract: A double-sided organic electroluminescent display is constructed with an optical shutter. The organic electroluminescent display which includes an image displaying part comprising a plurality of pixels to display an image corresponding to a data signal and a selection signal, an optical shutter provided on the image displaying part to transmit or block light in response to a control signal, and a driver circuit to supply the data and selection signals to the plurality of pixels and the control signal to the optical shutter, respectively is excellent in visual recognition.