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Local backlight dimming method of a liquid crystal display and liquid crystal display

A liquid crystal display and liquid crystal display panel technology, applied to static indicators, instruments, etc., can solve the problems of light leakage on the display panel, insufficient consideration of the size of local bright blocks, etc.

Active Publication Date: 2018-09-11
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when using the spatial filter, the size of the local bright block is not fully considered, and the spatial filter is used indiscriminately, resulting in obvious light leakage on the display panel.

Method used

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  • Local backlight dimming method of a liquid crystal display and liquid crystal display
  • Local backlight dimming method of a liquid crystal display and liquid crystal display
  • Local backlight dimming method of a liquid crystal display and liquid crystal display

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] An embodiment of the present invention provides a local backlight dimming method for a liquid crystal display, such as figure 1 shown, including the following steps:

[0034] S10, such as figure 2 As shown, the liquid crystal display panel 01 is divided into a plurality of display partition groups 10, and the optical information of the display partitions 101 in each display partition group 10 is obtained based on the input image data; th...

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Abstract

The embodiment of the invention provides a local backlight dimming method of a liquid crystal displayer and the liquid crystal displayer and relates to the technical field of display. The halation problem generated by local backlight adjusting and dark edge and light leakage problems can be improved. The dimming method includes the steps that on the basis of input image data, optical information of display partitions in display partition sets of a display panel is obtained; the display partition sets correspond to backlight partitions one to one; according to positions and the optical information of the display partitions, the range of a first area and the range of a second area are set in the display partition set, and the areas where bright blocks are judged, wherein the first area is the area which can be irradiated and covered by outgoing light of the display partition in the middle of the display partition sets and cannot be influenced by outgoing light of other display partition sets, and the second area is the area, except the first area, in the display partition sets; according to different areas where the bright blocks are located, backlight partitions, corresponding to the bright blocks, in a backlight source serve as reference, and the spatial filter coefficient of the backlight partitions are controlled to be different from that of other backlight partitions.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a local backlight dimming method of a liquid crystal display and the liquid crystal display. Background technique [0002] Liquid Crystal Display (LCD for short) has the advantages of low radiation, small size, and low energy consumption, and is widely used in electronic products such as tablet computers, televisions, and mobile phones. [0003] In order to reduce the power consumption of the display and improve the contrast of the display screen, a local backlight adjustment (Local Dimming) technology is introduced. At the same time, research has found that this technology can also significantly improve the dark-state light leakage phenomenon that occurs when the display panel is subjected to mechanical force. However, when dimming a local bright block in an overall darker picture, the combination of the bright block and the surrounding dark picture is prone to halos. Spatial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/342
Inventor 兰博骁胡巍浩郝卫程金辉郭瑞
Owner BOE TECH GRP CO LTD
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