Dimming control method, device and display device for light-emitting components

Abstract

The present invention provides a dimming control method, device and display device for light-emitting components. The method includes: inputting digital signal parameters to the light-emitting components corresponding to any pixel in the display device according to the preset group number, so as to control the light-emitting components. Scanning in several scanning stages of preset groups; where the preset number of groups is the number of groups of set gray values ​​obtained by grouping the gray levels of the display device, and the set gray values ​​of each group correspond to a control light-emitting element The device realizes the first analog signal parameters corresponding to the set grayscale value in the corresponding scanning stage; according to the target grayscale value, when scanning the light-emitting components in each scanning stage, input the first analog signal corresponding to the scanning stage to the light-emitting components The signal parameter or the second analog signal parameter, so that the superimposed gray value of the light-emitting component after a preset set of scanning stages is equal to the target gray value of any pixel. The embodiments of the present invention can not only avoid the problem of flicker easily occurring at low gray levels, but also improve the dimming precision.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of display devices, and in particular, to a dimming control method, device and display device for light-emitting components. Background technique [0002] A liquid crystal display device is generally composed of optical components such as a liquid crystal panel, and is currently widely used in liquid crystal televisions, computers, and the like. In the dimming control method of the light-emitting components (backlight LED) of the liquid crystal display device, the Local Dimming (dynamic dimming) technology is usually used to change the luminous brightness of the backlight LED according to the brightness of the display screen, so as to increase the contrast of the screen and improve the image quality. quality and reduce power consumption. [0003] At present, in traditional light-emitting device dimming, two dimming methods are mainly involved: pulse width dimming (PWMDimming), that is,...

AI Technical Summary

Problems solved by technology

[0004] However, the digital dimming method is prone to flickering problems due to the small duty cycle at low grayscales; the analog dimming method has limited dimming range and low dimming accuracy when used for multi-grayscale dimming. low problem

Images