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US 2017/0365461 A1Published application
Display device, driving method of the same, and electronic device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsYuji IWAKI, Daisuke KUBOTA, Kentaro HAYASHI
Life of this patent
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Abstract
A display device which can display a clear image and can display an image with low power consumption is provided. The display device includes an arithmetic circuit having a function of generating first to third display data, a first display portion, and a second display portion. The arithmetic circuit has a function of detecting a color region and a gray-scale region of the generated first display data and generating the second display data corresponding to an image to be displayed on the first display portion and the third display data corresponding to an image to be displayed on the second display portion, on the basis of the detection results.
Claims25
A display device comprising:
- a first circuit;
- a second circuit;
- a first display portion;
- and
- a second display portion,
- wherein the first circuit is configured to generate first display data,
- wherein the first circuit is configured to detect a color region of the first display data and a gray-scale region of the first display data,
- wherein the first circuit is configured to generate second display data and third display data on the basis of data relating to the color region of the first display data and data relating to the gray-scale region of the first display data,
- wherein the first circuit is configured to send the second display data to the second circuit,
- wherein the first circuit is configured to send the third display data to the second circuit,
- wherein the second circuit is configured to send the second display data received from the first circuit to the first display portion,
- wherein the second circuit is configured to send the third display data received from the first circuit to the second display portion,
- wherein the first display portion is configured to display an image corresponding to the second display data,
- wherein the second display portion is configured to display an image corresponding to the third display data, and
- wherein the first display portion and the second display portion are stacked.
12 more elements
A display device comprising:
- a first circuit;
- a second circuit;
- a third circuit;
- a first display portion;
- and
- a second display portion,
- wherein the first circuit is configured to generate first display data,
- wherein the first circuit is configured to detect a color region of the first display data and a gray-scale region of the first display data,
- wherein the first circuit is configured to generate second display data and third display data on the basis of data relating to the color region of the first display data and data relating to the gray-scale region of the first display data,
- wherein the first circuit is configured to send the second display data to the second circuit,
- wherein the first circuit is configured to send the third display data to the third circuit,
- wherein the second circuit is configured to send the second display data received from the first circuit to the first display portion,
- wherein the third circuit is configured to send the third display data received from the first circuit to the second display portion,
- wherein the first display portion is configured to display an image corresponding to the second display data,
- wherein the second display portion is configured to display an image corresponding to the third display data, and
- wherein the first display portion and the second display portion are stacked.
13 more elements
A method for operating a display device, comprising:
- a first step of generating display data;
- a second step of dividing the display data into regions arranged in a matrix;
- a third step of initializing a variable and a counter including a plurality of array variables;
- a fourth step of detecting the region that is an unlabeled gray-scale region by raster scanning;
- a fifth step of interrupting the raster scanning when the region that is an unlabeled gray-scale is detected in the fourth step;
- a sixth step of labeling the region that is an unlabeled gray-scale region and detected in the fourth step, with the variable as a label number;
- a seventh step of performing increment on the array variables including the variable in an index;
- an eighth step of performing 8- or 4-neighbor searching centering on the region labeled in the sixth step to detect the region which is an unlabeled gray-scale region;
- a step of returning to the sixth step when the region that is an unlabeled gray-scale region is detected in the eighth step;
- a ninth step of performing increment on the variable when the region that is an unlabeled gray-scale region is not detected in the eighth step;
- a tenth step of resuming the raster scanning from the region in which the raster scanning is interrupted in the fifth step and detecting the region that is an unlabeled gray-scale region;
- and
- a step of returning to the sixth step when the region that is an unlabeled gray-scale region is detected in the tenth step.
10 more elements
Dependencies are inferred from the claim text.