Display device and method for driving the same
AssigneeSamsung Display Co., Ltd.
InventorsJae-Hoon Lee, Baek-Woon Lee, Jung-Taek Kim, Jae-Woo Song, Hae-Goo Jung
Life of this patent
Estimating the term…
Abstract
A display device includes a display panel including a plurality of pixels, a control unit configured to scale image data provided from the outside based on an image load factor and to output the scaled image data, and a data driver configured to supply data signals corresponding to the scaled image data to a plurality of data lines connected to the pixels, wherein the control unit includes a load factor calculating unit configured to calculate a load factor of the image data; and a data scaler configured to scale a gray level of the image data based on a scaling ratio corresponding to a load factor.
Claims20
A display device comprising:
- a display panel comprising a plurality of pixels;
- a control unit configured to scale image data provided from the outside based on an image load factor and to output the scaled image data;
- and
- a data driver configured to supply data signals corresponding to the scaled image data to a plurality of data lines connected to the pixels,
- wherein the control unit comprises:
- a load factor calculating unit configured to calculate a load factor of the image data;
- and
- a data scaler configured to scale a gray level of the image data based on a plurality of scaling ratios corresponding to the load factor, each of the scaling ratios being determined in accordance with a corresponding one of a plurality of colors.
A display device comprising:
- an organic light emitting display panel comprising a plurality of pixels, the plurality of pixels comprising a first pixel, a second pixel, and a third pixel configured to emit light having a plurality of different colors, and a plurality of data lines and a plurality of scan lines connected to the plurality of pixels;
- a scan driver configured to sequentially supply a plurality of scan signals to the scan lines during respective scan periods of a plurality of subfields of one frame;
- a load factor calculating unit configured to calculate a plurality of load factors of image data provided from the outside;
- and
- first, second, and third data scalers configured to scale data values of the image data in accordance with scaling ratios of first, second, and third colors of the different colors, the scaling ratios corresponding to the load factors;
- a data driver configured to supply data signals generated based on the scaled image data to the data lines;
- and
- a power unit configured to generate a first driving power, a second driving power, and a third driving power supplied to corresponding ones of the first pixel, the second pixel, and the third pixel and to adjust at least one of voltage values of the first driving power, the second driving power, and the third driving power.
A method of driving a display device, the method comprising:
- calculating a load factor of image data provided from the outside;
- determining a plurality of scaling ratios corresponding to the load factor, each of the scaling ratios being determined in accordance with a corresponding one of a plurality of colors;
- scaling a plurality of data values of the image data in accordance with the scaling ratios;
- adjusting a plurality of voltage values of a driving power corresponding to each of the colors based on the scaling ratios corresponding to each of the colors;
- and
- expressing, by the pixels, a gray level corresponding to the scaled image data, the scaled image data being scaled in accordance with the colors of the pixels.
Dependencies are inferred from the claim text.