Abstract:
The organic light emitting display may include a plurality of pixels for generating light components with predetermined brightness components while controlling the amount of current that flows from a first power source to a second power source via organic light emitting diodes (OLED), a first power source controller for extracting data of the highest gray level among input data items of one frame and for outputting a control value having voltage information corresponding to the highest gray level data, and a first power source generator for generating a controlled voltage value corresponding to the control value and outputting the controlled voltage value to the first power source.
Abstract:
An organic light emitting display device includes: a display panel; a timing controller configured to receive image data when a vertical sync signal is activated, to receive reference data corresponding to the image data when the vertical sync signal is deactivated, and to generate an emission control signal in accordance with emission duty information of the reference data; and an emission driver configured to supply first and second emission powers to the display panel, and to control a duration of a period during which a potential difference between the first and second emission powers is greater than or equal to a reference value in accordance with the emission control signal.
Abstract:
An organic light emitting display includes a display unit that includes pixels coupled to scan lines, control lines, and data lines; a control line driver for providing control signals to the respective pixels through the control lines; a first power driver for applying a first power to the pixels of the display unit; and a second power driver for applying a second power to the pixels of the display unit, wherein the first power and/or the second power is applied to the pixels of the display unit, having voltage values at different levels, during periods of one frame, and the control signals and the first and second powers are concurrently provided to all of the pixels.
Abstract:
A display device includes a display unit including a plurality of pixels connected to a plurality of scan lines and a plurality of data lines, an inverse image processor configured to receive a first image data signal input from an external source and to generate a gray-inverted second image data signal, a controller configured to mix the first image data signal and the second image data signal alternately for each frame to generate a third image data signal, and to generate a driving control signal opening and closing a pair of shutter spectacles for each image frame displayed in the display unit, and a data driver configured to receive the third image data signal from the controller and to apply a corresponding data voltage to each of the plurality of data lines.
Abstract:
A display device includes an image signal modifier for modifying input image signals based on the difference between the input image signal for a pixel in a first row and the input image signal for the pixel in the adjacent row. The gate-on voltages includes a pre-charging voltage and a main charging voltage, the main charging voltage for the first row overlaps the pre-charging voltage for the second row and the pre-charging voltage for the first grow overlaps the main charging voltage for the second row for a predetermined time. The first data voltage is applied to the pixels of the first and second rows after application of the main charging gate-on voltage for the first row and the pre-charging gate-on voltage for the row, and the second data voltage is applied to the pixel of the second row after application of the main charging gate-on voltage for the second row.
Abstract:
A display device includes an image signal modifier for modifying input image signals based on the difference between the input image signal for a pixel in a first row and the input image signal for the pixel in the adjacent row. The gate-on voltages includes a pre-charging voltage and a main charging voltage, the main charging voltage for the first row overlaps the pre-charging voltage for the second row and the pre-charging voltage for the first grow overlaps the main charging voltage for the second row for a predetermined time. The first data voltage is applied to the pixels of the first and second rows after application of the main charging gate-on voltage for the first row and the pre-charging gate-on voltage for the row, and the second data voltage is applied to the pixel of the second row after application of the main charging gate-on voltage for the second row.
Abstract:
A method of gamma correction for an organic light emitting display device includes calculating a high-power voltage to be supplied in an emission period of the organic light emitting display device based on a gray-level range of an input image data for each frame, generating a gamma correction curve for the calculated high-power voltage based on a predetermined minimum gamma correction curve and a predetermined maximum gamma correction curve, performing a gamma correction on image data based on the gamma correction curve to generate gamma-corrected image data, and displaying the gamma-corrected image data on the organic light emitting display device.
Abstract:
An organic light emitting display device operating in a concurrent (e.g., simultaneous) emission method, which includes a first power driver configured to apply first power, which changes between a first low level and a first high level, to pixels of the display unit, and a second power driver configured to apply second power, which changes between a second low level and a second high level, to the pixels, wherein each of the pixels includes an organic light emitting diode, a driving transistor configured to control an amount of current supplied to the organic light emitting diode, and an initializing transistor coupled to an anode electrode of the organic light emitting diode and configured to be turned on during a reset period in one frame to supply a reset voltage, which is lower than the first high level of the first power, to the anode electrode of the organic light emitting diode.
Abstract:
A display device and a method of driving the same in which moving image blurring is prevented and a contrast ratio is enhanced by providing a light-emitting element, switching transistors, and a driving transistor with driving signals that include specific voltages at predetermined times, so that the light-emitting element does not emit light for an entire frame and the light output is not influenced by a threshold voltage of the driving transistor.
Abstract:
A method of driving an organic light emitting display device includes generating a luminance map for a plurality of pixels by applying the same driving voltage to driving transistors formed in the plurality of pixels of a panel and by capturing luminances of the pixels, generating a threshold voltage map by calculating threshold voltage correction values that compensate for threshold voltages of the driving transistors associated with the luminances of the pixels. A lookup table is generated by sampling the threshold voltage correction values stored in the threshold voltage map. Threshold voltage correction values are restored by interpolating the sampled threshold voltage correction values, and correcting a driving voltage by adding the restored threshold voltage correction values to input gray level data and by providing the added value to the panel.