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Display device and its backlight brightness control method and device

A technology of backlight brightness and backlight control, applied in static indicators, instruments, etc., can solve the problems of heavy halo and uneven backlight distribution, and achieve the effect of improving display effect and avoiding uneven backlight distribution.

Active Publication Date: 2021-08-24
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still issues such as uneven backlight distribution or heavy halos near objects in the frame

Method used

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  • Display device and its backlight brightness control method and device
  • Display device and its backlight brightness control method and device
  • Display device and its backlight brightness control method and device

Examples

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Embodiment Construction

[0060] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0061] related technologies, such as figure 1 As shown, the display device includes a backlight module 11 and a display panel 12 , and the backlight module 11 is used to provide backlight for the display panel 12 . Among them, such as Figure 1 ~ Figure 3 As shown, the backlight module 11 includes a plurality of backlight partitions 111, and the display panel 12 includes a plurality of display...

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Abstract

The invention relates to a display device and a backlight brightness control method and device thereof. The display device includes a backlight module, and the backlight module includes a plurality of backlight partitions. The backlight brightness control method includes: determining a target image display mode; determining a corresponding target filter kernel according to the target image display mode; The image data of the image partition obtains the initial backlight control value of the corresponding backlight partition to obtain the initial backlight control data; the initial backlight control data is smoothed and filtered by the target filter to obtain the target backlight control data, and the target backlight control data includes multiple backlight partitions Respective target backlight control values; control the backlight brightness of the corresponding backlight partitions according to the target backlight control values. According to the embodiments of the present invention, the problems of uneven distribution of backlight or heavy halos near objects in the display screen can be avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display device and a backlight brightness control method and device thereof. Background technique [0002] In the related art, a mini LED (small light emitting diode) may be used as a backlight source in an LCD (Liquid Crystal Display, liquid crystal display) display system. In order to solve the light leakage problem of LCD display, the local dimming technology based on multi-zone mini LED has gradually been paid attention to. The LCD can adopt uniform global backlight, or global backlight control, and perform uniform backlight processing on the display screen. However, due to the light leakage problem of the LCD itself, the display of the dark or black background is not pure enough, and the effect of pure black cannot be achieved, and the contrast of the overall picture is low. In order to improve the display effect of the LCD, a partition dimming technology can be used. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/3426G09G2320/0233G09G2320/0646G09G2360/16G09G2310/08
Inventor 饶天珉吴聪睿马希通
Owner BOE TECH GRP CO LTD