Back to results
US 12,118,950 B2Granted
Display device, and method of operating a display device
AssigneeSamsung Display Co., Ltd.
InventorsKihyun Pyun, Jang-Hoon Kwak
Life of this patent
Estimating the term…
Abstract
A display device includes a display panel including a plurality of pixels, a current sensor connected to the display panel, a controller including a gray-data voltage storing block, a block load gain extracting block, a block load generating block, a final load generating block, a current control block and a data correction block, and a data driver providing data voltages to the plurality of pixels based on the output image data.
Claims20
A display device comprising:
- a display panel including a plurality of pixels, the plurality of pixels including a plurality of pixel blocks;
- a power management circuit configured to provide a power supply voltage to the display panel;
- a current sensor connected to the display panel, and configured to generate a sensing current value by sensing a current of the display panel;
- a controller configured to receive the sensing current value from the current sensor to store gray-data voltage information for each of the plurality of pixel blocks, to generate gray-block load gain information for each of the plurality of pixel blocks based on the gray-data voltage information, to generate a block representative gray level and a block load for each of the plurality of pixel blocks by analyzing input image data, to generate a final load for the display panel based on the gray-block load gain information, the block representative gray level and the block load, to determine a scale factor based on the final load and the sensing current value, and to generate output image data by applying the scale factor to the input image data;
- and
- a data driver providing data voltages to the plurality of pixels based on the output image data.
3 more elements
A display device comprising:
- a display panel including a plurality of pixels, the plurality of pixels including a plurality of pixel blocks;
- a power management circuit configured to provide a power supply voltage to the display panel;
- a current sensor connected to the display panel, and configured to generate a sensing current value by sensing a current of the display panel;
- a controller configured to receive the sensing current value from the current sensor, the controller including:
- a gray-data voltage storing block storing gray-data voltage information for each of the plurality of pixel blocks,
- a block load gain extracting block generating gray-block load gain information for each of the plurality of pixel blocks based on the gray-data voltage information,
- a block load generating block generating a block representative gray level and a block load for each of the plurality of pixel blocks by analyzing input image data,
- a final load generating block generating a final load for the display panel based on the gray-block load gain information, the block representative gray level and the block load,
- a current control block determining a scale factor based on the final load and the sensing current value, and
- a data correction block generating output image data by applying the scale factor to the input image data;
- and
- a data driver providing data voltages to the plurality of pixels based on the output image data.
9 more elements
Dependencies are inferred from the claim text.