Granted Patent B2

US 12,505,779 · App. 18/711,982 · Granted Dec 23, 2025

Inventors: Yanhong Wu (Beijing, CN); Hao Fang (Beijing, CN)

Assignee: Beijing BOE Technology Development Co., Ltd.

G09G3/2007G09G3/32G09G3/3208G09G2320/0666G09G2340/06G09G2360/144

Abstract

Claims (47)

1 . A display method applied to a display device, wherein the display device is configured to display according to adjusted image data of an image to be displayed, and the adjusted image data comprises grayscales corresponding to a plurality of primary color components in a color gamut of a display screen of the display device,

wherein the method comprises:

determining a target color temperature;

determining gains of the plurality of primary color components of the display device by using the target color temperature according to a functional relationship between the gains of the plurality of primary color components of the display device and a color temperature,

wherein the gains of the plurality of primary color components of the display device correspond to the target color temperature, and the functional relationship between the gains of the plurality of primary color components of the display device and the color temperature is predetermined according to a parameter of the display device;

acquiring initial image data of the image to be displayed, wherein the initial image data comprises initial grayscales corresponding to the plurality of primary color components;

determining the adjusted image data of the image to be displayed based on the determined gains of the plurality of primary color components of the display device and the acquired initial image data of the image to be displayed, wherein the adjusted image data of the image to be displayed comprises adjusted grayscales corresponding to the plurality of primary color components; and

displaying the image to be displayed based on the adjusted image data of the image to be displayed;

wherein the determining a target color temperature comprises:

acquiring an environmental illuminance of an environment in which the display screen is located;

determining the target color temperature corresponding to the environmental illuminance according to a mapping relationship between the environmental illuminance and the color temperature, wherein the mapping relationship between the environmental illuminance and the color temperature is predetermined based on a human eye comfort index.

2 . The display method according to claim 1 , wherein predetermining the functional relationship between the gains of the plurality of primary color components of the display device and the color temperature according to the parameter of the display device comprises:

determining the color gamut of the display screen of the display device;

determining a conversion matrix according to the determined color gamut of the display screen, wherein the conversion matrix is configured to perform a color conversion between a color space of the display screen and a standard color space; and

determining the functional relationship between the gains of the plurality of primary color components of the display device and the color temperature according to the conversion matrix.

3 . The display method according to claim 2 , wherein the determining the functional relationship between the gains of the plurality of primary color components of the display device and the color temperature according to the conversion matrix comprises:

acquiring a mapping table between the color temperature and chromatic coordinates in the standard color space;

determining chromatic coordinates of a white dot in the color space of the display screen at a plurality of color temperatures according to the mapping table between the color temperature and the chromatic coordinates in the standard color space and the conversion matrix;

determining the gains of the plurality of primary color components at the plurality of color temperatures according to the chromatic coordinates of the white dot in the color space of the display screen at the plurality of color temperatures and a predetermined parameter; and

fitting the functional relationship between the gains of the plurality of primary color components of the display device and the color temperature according to the gains of the plurality of primary color components at the plurality of color temperatures.

4 . The display method according to claim 3 , wherein the functional relationship between the gains of the plurality of primary color components of the display device and the color temperature is a cubic power functional relationship.

5 . The display method according to claim 3 , wherein the predetermined parameter is 255.

6 . The display method according to claim 2 , wherein the determining the color gamut of the display screen of the display device comprises:

measuring the chromatic coordinates of the display screen displaying a pure red image, the chromatic coordinates of the display screen displaying a pure green image, the chromatic coordinates of the display screen displaying a pure blue image, and the chromatic coordinates of the display screen displaying a pure white image, respectively; and

determining the color gamut of the display screen according to the chromatic coordinates of the display screen displaying the pure red image, the chromatic coordinates of the display screen displaying the pure green image, the chromatic coordinates of the display screen displaying the pure blue image, and the chromatic coordinates of the display screen displaying the pure white image.

7 . The display method according to claim 1 , wherein predetermining the mapping relationship between the environmental illuminance and the color temperature based on the human eye comfort index comprises:

providing a plurality of environmental illuminances;

determining a plurality of images to be observed and a plurality of observers;

for each provided environmental illuminance, determining a color temperature range for a human eye comfort zone according to a Kruithof curve; traversing the determined color temperature range in a predetermined stride to determine a plurality of color temperatures to be observed; controlling the display device to display the plurality of images to be observed at the plurality of color temperatures to be observed; obtaining multi-dimensional scores of the plurality of images to be observed from the plurality of observers respectively; determining a comprehensive score according to the multi-dimensional scores; and determining a color temperature to be observed having a highest comprehensive score as the color temperature corresponding to the environmental illuminance.

8 . The display method according to claim 7 , wherein the multi-dimensional scores comprise a score in a first dimension, a score in a second dimension and a score in a third dimension, the first dimension represents a comfort of an observer observing a displayed image, the second dimension represents a brightness of the displayed image perceived by the observer observing the displayed image, and the third dimension represents a nervousness of the observer observing the displayed image; and

the determining a comprehensive score according to the multi-dimensional scores comprises: calculating a weighted sum of the score in the first dimension, the score in the second dimension and the score in the third dimension to determine the comprehensive score.

9 . The display method according to claim 7 , wherein the plurality of images to be observed comprise a natural scenery image, a people image, and a solid color image.

10 . The display method according to claim 1 , wherein the plurality of primary color components comprise a red component, a green component, and a blue component; and

the functional relationship between the gains of the plurality of primary color components of the display device and the color temperature comprises: a first functional relationship between the gain of the red component and the color temperature, a second functional relationship between the gain of the green component and the color temperature, and a third functional relationship between the gain of the blue component and the color temperature.

11 . The display method according to claim 10 , wherein the determining gains of a plurality of primary color components of the display device according to a functional relationship between the gains of the plurality of primary color components of the display device and a color temperature comprises:

determining a first gain of the red component of the display device according to the first functional relationship between the gain of the red component of the display device and the color temperature;

determining a second gain of the green component of the display device according to the second functional relationship between the gain of the green component of the display device and the color temperature; and

determining a third gain of the blue component of the display device according to the third functional relationship between the gain of the blue component of the display device and the color temperature.

12 . The display method according to claim 11 , wherein the initial image data comprises a first initial grayscale corresponding to the red component, a second initial grayscale corresponding to the green component, and a third initial grayscale corresponding to the blue component; and

wherein the determining adjusted image data of the image to be displayed based on the determined gains of the plurality of primary color components of the display device and the acquired initial image data of the image to be displayed comprises:

multiplying the first initial grayscale by the first gain to obtain a first adjusted grayscale of the adjusted image data;

multiplying the second initial grayscale by the second gain to obtain a second adjusted grayscale of the adjusted image data; and

multiplying the third initial grayscale by the third gain to obtain a third adjusted grayscale of the adjusted image data.

13 . An electronic apparatus, comprising:

a display screen; and

a controller configured to control, using the display method according to claim 1 , the display screen to display an image to be displayed.

14 . The electronic apparatus according to claim 13 , wherein the electronic apparatus further comprises a sensor configured to acquire an environmental illuminance of an environment in which the display screen is located, and the sensor is communicatively connected with the controller.

Assignments (2)

Continuity (1)

References Cited (18)