Backlight adjusting method of display device, backlight adjusting device and display device

Abstract

The invention provides a backlight adjusting method of a display device, a backlight adjusting device and the display device. The display device comprises a display panel and a backlight module, the display panel is divided into a plurality of display subareas, the backlight module comprises a plurality of backlight subareas, the display subareas correspond to the backlight subareas in a one-to-one mode, and the method comprises the following steps: according to pixel information in each display subarea, calculating an initial backlight value of the backlight subarea corresponding to each display subarea; and correcting the initial backlight value of the target backlight subarea according to a preset backlight threshold and the initial backlight value of the backlight subarea adjacent to the target backlight subarea to obtain a first backlight value of the target backlight subarea, the target backlight subarea being each backlight subarea. According to the backlight adjusting method provided by the embodiment of the invention, the halo problem existing in local dimming equipment and the local detail loss problem caused by compensation overflow can be well weakened under the condition that the overall display brightness and contrast ratio are not influenced, and the picture effect is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight adjustment method of a display device, a backlight adjustment device, and a display device. Background technique [0002] The so-called Local Dimming refers to the backlight area adjustment technology of the display. The backlight used in traditional displays is the entire surface light source. When the brightness is adjusted, the entire screen will brighten or darken at the same time. Local Dimming uses a backlight composed of hundreds of LEDs to replace the traditional backlight. By designing a corresponding algorithm, the backlight LED can be adjusted according to the brightness of the image, thereby improving the contrast of the image and reducing energy consumption. [0003] With the continuous progress of the technology, the size of the LED device is getting smaller and smaller, and the number of dynamic partitions of the screen backlight composed of it will a...

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Problems solved by technology

[0004] In view of this, the present invention provides a backlight adjustment method for a display device, a backlight adjustment device, and a display device, which can solve the problem of halo phenomenon in the display screen in the prior art, pixel compensation overflow, resulting in loss of detail information, and finally resulting in a poor display effect on the screen. falling problem

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