Abstract: A display device includes a display panel. The display panel includes sub-pixels. A driver converts first frame data corresponding to a first pixel arrangement of the sub-pixels into second frame data corresponding to a second pixel arrangement and provides data signals corresponding to second frame data to the sub-pixels having the second pixel arrangement. The driver includes a padding circuit and a rendering circuit. The padding circuit converts the first frame data into padding data by adding a padding value to at least one of a front end and a rear end of each line data of the first frame data. The rendering circuit generates the second frame data by applying a rendering filter to the padding data.

Abstract: A display device includes a display panel and an optical module disposed under the display panel. The display panel includes a first display region under which the optical module is disposed to overlap the first display region in a plan view, the first display region including transparent regions through which light for an operation of the optical module passes and first pixels having a first pixel structure and disposed between the transparent regions, a second display region in which second pixels having a second pixel structure are disposed, and a third display region disposed between the first display region and the second display region, third pixels having a third pixel structure being disposed in the third display region, only part of the third pixels being driven during a display operation.

Abstract: A luminance compensating apparatus includes a luminance characteristic value calculator calculating a first luminance characteristic value corresponding to a first unit section between first and second reference gray levels, and a second luminance characteristic value corresponding to a second unit section between second and third reference gray levels based on a first luminance value, a second luminance value, and a third luminance value; an expected correction gray level calculator calculating an expected correction gray level corresponding to the first reference gray level based on the first luminance value; and a compensation gray level calculator calculating a gamma compensation value based on the first luminance characteristic value when the expected correction gray level is included in the first unit section, and based on the first luminance characteristic value and the second luminance characteristic value when the expected correction gray level is included in the second unit section.

Abstract: A method of displaying an image on a display panel includes displaying an image of a grayscale value A, imaging the image of the grayscale value A with a camera, displaying an image of a grayscale value B, imaging the image of the grayscale value B with the camera, determining a compensation parameter P of the grayscale value A for each pixel in the display panel using the imaged data of the grayscale value A, determining a representative value Q of probability distribution of the compensation parameters of the grayscale value A from the image of the grayscale value A, determining a representative value R of probability distribution of compensation parameters of the grayscale value B from the image of the grayscale value B and compensating an input image data for each pixel using the value P, the value Q and the value R.

Abstract: A display device includes a display panel and an optical module disposed under the display panel. The display panel includes a first display region under which the optical module is disposed to overlap the first display region in a plan view, the first display region including transparent regions through which light for an operation of the optical module passes and first pixels having a first pixel structure and disposed between the transparent regions, a second display region in which second pixels having a second pixel structure are disposed, and a third display region disposed between the first display region and the second display region, third pixels having a third pixel structure being disposed in the third display region, only part of the third pixels being driven during a display operation.

Abstract: A test apparatus includes: a compensation coefficient calculator configured to calculate a main compensation coefficient for a main gradation and a sub compensation coefficient for a sub gradation based on a detected image signal; a primary predictor configured to determine a representative value of each of a plurality of blocks of a display panel based on the detected image signal, and output a prediction compensation coefficient for the sub gradation based on the main compensation coefficient and the representative value corresponding to each of the plurality of blocks; a secondary predictor configured to determine a flag based on the sub compensation coefficient and the prediction compensation coefficient; and a controller configured to output the main compensation coefficient, the representative value, and the flag stored in a memory as compensation data.

Abstract: In a method of generating compensation data for a display device, first color, second color, and third color compensation value sets may be obtained by capturing first color, second color, and third color images displayed by the display device, respectively, white, first color, second color, and third color loading luminances may be obtained by capturing white, first color, second color, and third color loading patterns displayed by the display device, respectively, first color, second color, and third color scale factors may be calculated by dividing a luminance decrease ratio of the white loading luminance by luminance decrease ratios of the first color, second color, and third color loading luminances, respectively, and the first color, second color, and third color compensation value sets and the first color, second color, and third color scale factors may be stored in the display device.

Abstract: A test apparatus includes: a compensation coefficient calculator configured to calculate a main compensation coefficient for a main gradation and a sub compensation coefficient for a sub gradation based on a detected image signal; a primary predictor configured to determine a representative value of each of a plurality of blocks of a display panel based on the detected image signal, and output a prediction compensation coefficient for the sub gradation based on the main compensation coefficient and the representative value corresponding to each of the plurality of blocks; a secondary predictor configured to determine a flag based on the sub compensation coefficient and the prediction compensation coefficient; and a controller configured to output the main compensation coefficient, the representative value, and the flag stored in a memory as compensation data.

Abstract: A luminance compensating apparatus includes a luminance characteristic value calculator calculating a first luminance characteristic value corresponding to a first unit section between first and second reference gray levels, and a second luminance characteristic value corresponding to a second unit section between second and third reference gray levels based on a first luminance value, a second luminance value, and a third luminance value; an expected correction gray level calculator calculating an expected correction gray level corresponding to the first reference gray level based on the first luminance value; and a compensation gray level calculator calculating a gamma compensation value based on the first luminance characteristic value when the expected correction gray level is included in the first unit section, and based on the first luminance characteristic value and the second luminance characteristic value when the expected correction gray level is included in the second unit section.

Abstract: A display device includes a display panel and an optical module disposed under the display panel. The display panel includes a first display region under which the optical module is disposed to overlap the first display region in a plan view, the first display region including transparent regions through which light for an operation of the optical module passes and first pixels having a first pixel structure and disposed between the transparent regions, a second display region in which second pixels having a second pixel structure are disposed, and a third display region disposed between the first display region and the second display region, third pixels having a third pixel structure being disposed in the third display region, only part of the third pixels being driven during a display operation.

Abstract: A method of displaying an image on a display panel includes displaying an image of a grayscale value A, imaging the image of the grayscale value A with a camera, displaying an image of a grayscale value B, imaging the image of the grayscale value B with the camera, determining a compensation parameter P of the grayscale value A for each pixel in the display panel using the imaged data of the grayscale value A, determining a representative value Q of probability distribution of the compensation parameters of the grayscale value A from the image of the grayscale value A, determining a representative value R of probability distribution of compensation parameters of the grayscale value B from the image of the grayscale value B and compensating an input image data for each pixel using the value P, the value Q and the value R.

Abstract: In a method of generating compensation data for a display device, first color, second color, and third color compensation value sets may be obtained by capturing first color, second color, and third color images displayed by the display device, respectively, white, first color, second color, and third color loading luminances may be obtained by capturing white, first color, second color, and third color loading patterns displayed by the display device, respectively, first color, second color, and third color scale factors may be calculated by dividing a luminance decrease ratio of the white loading luminance by luminance decrease ratios of the first color, second color, and third color loading luminances, respectively, and the first color, second color, and third color compensation value sets and the first color, second color, and third color scale factors may be stored in the display device.

Abstract: An apparatus for testing a display panel and a driving method thereof. The apparatus includes: a driver for providing a test signal to a display panel; an image sensor for acquiring image data by photographing the display panel on which an image corresponding to the test signal is displayed; a luminance calculator for calculating luminance distribution data, based on the image data; and a compensation data generator for determining a compensation value with respect to pixels of the display panel, based on the luminance distribution data. The driver provides a test signal corresponding to a first gray scale level to a first region including a central portion of the display panel, and provides a test signal corresponding to a second gray scale level different from the first gray scale level to a second region.

Abstract: An apparatus for testing a display panel and a driving method thereof. The apparatus includes: a driver for providing a test signal to a display panel; an image sensor for acquiring image data by photographing the display panel on which an image corresponding to the test signal is displayed; a luminance calculator for calculating luminance distribution data, based on the image data; and a compensation data generator for determining a compensation value with respect to pixels of the display panel, based on the luminance distribution data. The driver provides a test signal corresponding to a first gray scale level to a first region including a central portion of the display panel, and provides a test signal corresponding to a second gray scale level different from the first gray scale level to a second region.

Abstract: A method of compensating for color deflection of a display device includes dividing a display region of a display panel into a plurality of partial regions, displaying a reference image in the display region, measuring optical characteristics of the partial regions based on the reference image, calculating a region compensation factor by the partial regions based on the optical characteristics, and storing the region compensation factor in a storage device.

Abstract: A method of compensating for color deflection of a display device includes dividing a display region of a display panel into a plurality of partial regions, displaying a reference image in the display region, measuring optical characteristics of the partial regions based on the reference image, calculating a region compensation factor by the partial regions based on the optical characteristics, and storing the region compensation factor in a storage device.