Abstract: Disclosed herein are methods and corresponding systems and devices for compensating burn-in in an electronic display. When the electronic display is divided into multiple regions, each region can have a separate compensation parameter associated with it. The compensation parameter can be determined through estimating pixel degradation based on how the region was used over the lifetime of the electronic display, for instance, the brightness of images previously displayed in the region. Although each region may have its own compensation parameter, burn-in compensation can be performed by selecting one compensation parameter from among a set of stored parameters for use as a global compensation parameter applied across all the display pixels, i.e., the entire display area. The global compensation parameter can be selected based on which region a user is looking at. Accordingly, a display system can include or be coupled to an eye-tracking unit that monitors eye movement.

Abstract: A stain compensating apparatus includes a camera, an input signal processing part, an edge compensating part and a stain compensating value generating part. The camera captures a display image from the display panel. The input signal processing part generates a luminance profile based on the display image captured by the camera. The edge compensating part compensates the luminance profile of a curved portion of the display panel. The stain compensating value generating part generates a stain compensating value for a pixel of the display panel using the compensated luminance profile.

Abstract: A display device includes a display panel that includes a pixel, a current sensor that measures a driving current provided to the display panel, and a timing controller that calculates a reference driving current and a degradation ratio of the pixel based on first image data provided to the display panel and compensates second image data based on the driving current, the reference driving current, and the degradation ratio of the pixel.

Abstract: A stage includes an output, first and second controllers, and first and second inputs. The output supplies a scan signal to a first output terminal and a carry signal to a second output terminal based on first and second node voltages and a first clock signal supplied to a first input terminal. The first controller controls a third node voltage based on a voltage of the second output terminal. The second controller controls the second node voltage based on the first clock signal supplied to the first input terminal and the third node voltage. The first input controls the first and third node voltages based on a carry signal of a previous stage supplied to a second input terminal. The second input controls the first and third node voltages based on the second node voltage and a carry signal of a next stage supplied to a third input terminal.

Abstract: An optical compensation method for a display device including a pixel is provided. The method includes: providing test data having a first grayscale value to the display device; measuring a luminance of the pixel which emits light based on the test data; and calculating a compensation grayscale value based on a second target luminance and the measured luminance of the pixel. The second target luminance is lower than a first target luminance which is set based on the first grayscale value.

Abstract: A luminance correction system includes: a display device that displays an image of a first grayscale value; an image capturing device that generates a first image and a second image by capturing the displayed image; and an image separator that generates a first high-frequency image by extracting a high-frequency image from the first image, and generates a second low-frequency image by extracting a low-frequency image from the second image, wherein the display device includes: an image corrector that generates a corrected image data by analyzing the first high-frequency image and the second low-frequency image to provide an analyzation result and by correcting an image data with respect to the displayed image in accordance with the analyzation result to generate the corrected image data; and a display unit including a plurality of pixels that emit light with luminance corresponding to the corrected image data.

Abstract: A stain compensating apparatus includes a camera, an input signal processing part, an edge compensating part and a stain compensating value generating part. The camera captures a display image from the display panel. The input signal processing part generates a luminance profile based on the display image captured by the camera. The edge compensating part compensates the luminance profile of a curved portion of the display panel. The stain compensating value generating part generates a stain compensating value for a pixel of the display panel using the compensated luminance profile.

Abstract: A stain compensating apparatus includes a camera, an input signal processing part, an edge compensating part and a stain compensating value generating part. The camera captures a display image from the display panel. The input signal processing part generates a luminance profile based on the display image captured by the camera. The edge compensating part compensates the luminance profile of a curved portion of the display panel. The stain compensating value generating part generates a stain compensating value for a pixel of the display panel using the compensated luminance profile.

Abstract: A method for driving an organic light emitting display device includes measuring a characteristic of a panel and storing a measured loading correction value in a first look-up table. The measured loading correction value includes loading information of pixels that correspond to predetermined gray scale values based on the characteristic of the panel The method further includes storing gamma values of the pixels corresponding to the characteristic of the panel in a second lookup table, and obtaining a calculated loading correction value based on pre-stored equations, the first lookup table, and the second lookup table. The calculated loading correction value includes loading information corresponding to gray scale values different from the predetermined gray scale values.

Abstract: A display device according to an exemplary embodiment of the present invention includes: a display unit configured to display a specific image according to first data supplied from the outside; an image compensator configured to receive a photographed image in which the specific image is photographed and generate variation information corresponding to luminance variations of pixels using the photographed image; an image corrector configured to generate second data by correcting the first data according to the variation information; and a data driver configured to generate a data signal using the first data or the second data and supply the data signal to the display unit.

Abstract: A stage includes an output, first and second controllers, and first and second inputs. The output supplies a scan signal to a first output terminal and a carry signal to a second output terminal based on first and second node voltages and a first clock signal supplied to a first input terminal. The first controller controls a third node voltage based on a voltage of the second output terminal. The second controller controls the second node voltage based on the first clock signal supplied to the first input terminal and the third node voltage. The first input controls the first and third node voltages based on a carry signal of a previous stage supplied to a second input terminal. The second input controls the first and third node voltages based on the second node voltage and a carry signal of a next stage supplied to a third input terminal.

Abstract: An apparatus includes a controller to generate at least one pulse width modulated (PWM) signal to control a switch connected to a pixel circuit of a display device. The at least one PWM signal controls coupling of a current source or a current sink through the switch to the pixel circuit. When the PWM signal is applied during a first period, the PWM signal has a width sufficient to discharge a pixel capacitor. When the PWM signal is applied during a second period, the PWM signal has a width which is based on a data signal. The pixel circuit controls emission of light with a certain gray scale value based on the data signal.

Abstract: A method for driving an organic light emitting display device includes measuring a characteristic of a panel and storing a measured loading correction value in a first look-up table. The measured loading correction value includes loading information of pixels that correspond to predetermined gray scale values based on the characteristic of the panel The method further includes storing gamma values of the pixels corresponding to the characteristic of the panel in a second lookup table, and obtaining a calculated loading correction value based on pre-stored equations, the first lookup table, and the second lookup table. The calculated loading correction value includes loading information corresponding to gray scale values different from the predetermined gray scale values.

Abstract: An optical compensation method for a display device including a pixel is provided. The method includes: providing test data having a first grayscale value to the display device; measuring a luminance of the pixel which emits light based on the test data; and calculating a compensation grayscale value based on a second target luminance and the measured luminance of the pixel. The second target luminance is lower than a first target luminance which is set based on the first grayscale value.

Abstract: A stain compensating apparatus includes a camera, an input signal processing part, an edge compensating part and a stain compensating value generating part. The camera captures a display image from the display panel. The input signal processing part generates a luminance profile based on the display image captured by the camera. The edge compensating part compensates the luminance profile of a curved portion of the display panel. The stain compensating value generating part generates a stain compensating value for a pixel of the display panel using the compensated luminance profile.

Abstract: A system for correcting defects on a display panel includes: a signal supplier configured to supply a test signal corresponding to each of a first reference gray level, a second reference gray level, and a third reference gray level to the display panel; a luminance calculator configured to capture an image for each reference gray level displayed on the display panel in response to the test signal and to calculate luminance distribution data of the display panel for each reference gray level; and a correction data calculator configured to calculate correction data based on the luminance distribution data for each reference gray level, wherein the first, second, and third reference gray levels have different gray values, the third reference gray level corresponds to a maximum gray value of gray data input to the display panel, and the correction data increases the maximum gray value of the input gray data.

Abstract: A display device according to an exemplary embodiment of the present invention includes: a display unit configured to display a specific image according to first data supplied from the outside; an image compensator configured to receive a photographed image in which the specific image is photographed and generate variation information corresponding to luminance variations of pixels using the photographed image; an image corrector configured to generate second data by correcting the first data according to the variation information; and a data driver configured to generate a data signal using the first data or the second data and supply the data signal to the display unit.

Abstract: A luminance correction system includes: a display device that displays an image of a first grayscale value; an image capturing device that generates a first image and a second image by capturing the displayed image; and an image separator that generates a first high-frequency image by extracting a high-frequency image from the first image, and generates a second low-frequency image by extracting a low-frequency image from the second image, wherein the display device includes: an image corrector that generates a corrected image data by analyzing the first high-frequency image and the second low-frequency image to provide an analyzation result and by correcting an image data with respect to the displayed image in accordance with the analyzation result to generate the corrected image data; and a display unit including a plurality of pixels that emit light with luminance corresponding to the corrected image data.

Abstract: A display device includes a display panel that includes a pixel, a current sensor that measures a driving current provided to the display panel, and a timing controller that calculates a reference driving current and a degradation ratio of the pixel based on first image data provided to the display panel and compensates second image data based on the driving current, the reference driving current, and the degradation ratio of the pixel.

Abstract: A system and a method for luminance correction that can remove luminance spots of a display device. The system includes a display device, an image detection unit, and a luminance correction device. The display device includes a plurality of sub-pixels including first sub-pixels and corresponding second sub-pixels. The image detection unit is configured to measure respective luminance values of the first sub-pixels. The luminance correction device is configured to supply test data so that only the first sub-pixels emit light, and to calculate correction values corresponding to the plurality of sub-pixels based on difference values between the respective luminance values measured by the image detection unit and one or more target luminance values.