Patent ID: 11961448
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. 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.