A method and terminal for adjusting backlight brightness

Abstract

The embodiments of the present invention relate to a method for adjusting backlight brightness and a terminal. The method comprises: acquiring a parameter of an image, wherein the parameter comprises one or more of an image change rate, a chrominance ratio, a spatial resolution and image brightness; according to the parameter of the image and a pre-set parameter threshold value, determining the speed for adjusting backlight brightness of a display device, wherein the pre-set parameter threshold value corresponds to the parameter of the image and comprises one or more of an image change rate threshold value, a chrominance ratio threshold value, a spatial resolution threshold value and an image brightness threshold value; by acquiring the parameter of the image, determining the speed for adjusting the backlight brightness of the image according to the parameter of the image; and according to a luminance value of an external environment and the parameter of the image, determining a target brightness where the backlight brightness of the display device is to be adjusted, and according to the determined adjustment speed, adjusting the backlight brightness of the image to the target brightness. By means of a suitable adjustment speed, a user can be prevented from seeing a backlight flicker, and at the same time, the best display effect of an image can be achieved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a method and a terminal for adjusting the brightness of a backlight. Background technique [0002] In the era of smart phones, LCD display effect and standby time have increasingly become the focus of attention of smart phones. LCD backlight brightness is closely related to display effect and power consumption. When the brightness of the LCD backlight is appropriate, the display capability of the LCD can be fully utilized; however, when the brightness of the LCD backlight is too low, the display content of the LCD will become dim, with low contrast and poor visibility; when the brightness of the LCD backlight is too high, Although the display effect is not bad, it is more harmful to the eyes, and the power consumption is very large, which affects the use time of the smart phone. [0003] In addition, LCD is a passive light-emitting display, and the display effect...

AI Technical Summary

Problems solved by technology

[0004] The environment in which users use smart phones is often changeable. It may be in the evening or at noon, indoors or outdoors. , the smart phone needs to make corresponding adjustments according to the environment, but during the adjustment process, if the range is too large, the user will find flickering, if the adjustment speed is too slow, the brightness cannot keep up with the changes in the environment, and uniform visibility cannot be achieved Effect

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