Samsung Display Co., Ltd.

Sangmyeon Han

Seungho Park

Byoungkwan An

Namjae Lim

Joonhyeok Jeon

Jaehoon Lee

Jongman Kim

Seokgyu Ban

Jonghwa Park

A display device includes a display unit which includes a plurality of pixels, a degradation controller which includes a voltage compensator configured to calculate a driving voltage increase amount based on a degradation amount of a maximum degradation pixel among the pixels and a global current controller configured to calculate calculates a first scale factor for compensating a power increase amount according to the driving voltage increase amount, a driving voltage provider which is configured to increase a driving voltage provided to the pixels based on the driving voltage increase amount, a data compensator which is configured to generate output image data by scaling the first scale factor to grayscale values of input image data, and a data driver which is configured to provide data voltages to the pixels based on the output image data.

Driving controller, display device, and method of driving display device

A display driver includes a nonvolatile memory, an encoder, a decoder, and a compensator. The nonvolatile memory is configured to store accumulated stress data and compensation data corresponding to the accumulated stress data. The encoder is configured to encode the compensation data received from the nonvolatile memory to generate encoded compensation data. The decoder is configured to decode the encoded compensation data to generate decoded compensation data. The compensator is configured to process input image data based on the decoded compensation data and generate accumulated stress data.

Display driver

A driving controller of a display device includes: an accumulation unit, which outputs accumulation data, which is obtained by accumulating a deterioration state, and a deterioration stress value based on an input image signal and a deterioration prediction temperature value; a temperature prediction unit that calculates the deterioration prediction temperature value based on the accumulation data, a color acceleration coefficient, a color current contribution ratio, and a temperature signal; and a compensation unit that outputs an output image signal based on the input image signal and the deterioration stress value.

Driving controller, display device, and operation method of the display device

A display apparatus includes a display panel, a driving controller and a data driver. The display panel includes a pixel. The driving controller generates an age compensation value using a sensed age generated based on sensing data of the pixel and an accumulated age generated based on accumulated grayscale values of input image data, generates a final age based on the age compensation value, and compensates a grayscale value of the input image data based on a final age to generate a data signal. The data driver converts the data signal to a data voltage and outputs the data voltage to the display panel.

Display apparatus and method of compensating image of display panel using the same

An organic light-emitting display apparatus includes a pixel and a power supply. The pixel is connected to a scan line, a data line, and a power line and includes an organic light-emitting diode to emit light based on a first data voltage. The power supply applies different levels of power to the pixel during one frame. The pixel holds a second data voltage to be used during a next frame when the organic light-emitting diode emits light based on the first data voltage during the one frame.

Organic light-emitting display apparatus and method of driving the same

Provided are a display device and an operating method thereof. The display device includes a display panel which includes a plurality of first, second, and third display pixels and a plurality of unit cells. The first, second, and third display pixels include a plurality of organic light emitting materials for displaying first, second, and third colors, respectively. Each of the unit cells includes one light sensing pixel adjacent to the first, second, and third display pixels.

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Yongin-si, South Korea

Sangmyeon Han