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US 11,961,448 B2Granted
Display device
AssigneeSamsung Display Co., Ltd.
InventorHakgyu Kim
Life of this patent
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Abstract
A display device includes a display panel including pixels, and a display panel driver configured to drive the display panel. The display panel driver is configured to determine a predicted on-pixel ratio of a current frame based on an artificial neural network model and input image data of a previous frame, determine a first adjustment value based on the predicted on-pixel ratio, and adjust a luminance of the current frame based on the first adjustment value.
Claims18
A display device comprising:
- a display panel including pixels;
- and
- a display panel driver configured to drive the display panel,
- wherein the display panel driver is configured to determine a predicted on-pixel ratio of a current frame based on an artificial neural network model and input image data of a previous frame, to determine a first adjustment value based on the predicted on-pixel ratio, and to adjust a luminance of the current frame based on the first adjustment value,
- wherein the predicted on-pixel ratio is a ratio of a driving amount when the pixels are driven based on input image data of the current frame to a maximum driving amount when all of the pixels are driven based on a maximum grayscale value,
- wherein the artificial neural network model is configured to determine the predicted on-pixel ratio as probabilities for on-pixel ratios,
- wherein the display panel driver is configured to determine the first adjustment value by summing values generated by multiplying the probabilities of on-pixel ratios and predetermined reference adjustment values corresponding to the on-pixel ratios, respectively.
4 more elements
A display device comprising:
- a display panel including pixels;
- and
- a display panel driver configured to drive the display panel,
- wherein the display panel driver includes a first adjustment value look-up table in which a first adjustment value according to input image data of a previous frame is included and an artificial neural network model which predicts an on-pixel ratio of a current frame based on the input image data of the previous frame, and is configured to update the first adjustment value look-up table using the artificial neural network model and to adjust a luminance of the current frame based on the first adjustment value,
- wherein the on-pixel ratio of the current frame is a ratio of a driving amount when the pixels are driven based on input image data of the current frame to a maximum driving amount when all of the pixels are driven based on a maximum grayscale value, the on-pixel ratio of the current frame being determined by the artificial neural network model,
- wherein the display panel driver is configured to reduce the luminance of a first region of the display panel by the first adjustment value, to calculate a first on-pixel ratio of the first region based on the input image data of the current frame for the first region, to calculate a first difference value between the first adjustment value and a reference adjustment value corresponding to the first on-pixel ratio, to determine a second adjustment value by summing the first adjustment value with a product of the first difference value and a first coefficient, and to reduce the luminance of a second region of the display panel different from the first region by the second adjustment value.
3 more elements
Dependencies are inferred from the claim text.