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Image display method using backlight source of lcd display

A technology for LCD display and image display, which is applied in the field of color gamut expansion, and can solve the problems of low luminous efficiency of color LEDs, high power consumption, increasing the complexity of backlight circuits and corresponding backlight algorithms, etc.

Inactive Publication Date: 2020-02-21
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using RGB LEDs as the backlight, although the color gamut can be expanded, but the power consumption of the RGB LEDs as the backlight is higher than that of the traditional display with white LEDs as the backlight, and the luminous efficiency of the color LEDs is lower than that of the white LEDs
And control three backlight signals at the same time, which increases the complexity of the corresponding backlight circuit and the corresponding backlight algorithm

Method used

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  • Image display method using backlight source of lcd display
  • Image display method using backlight source of lcd display
  • Image display method using backlight source of lcd display

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Embodiment Construction

[0052] The present invention uses white light LEDs and sapphire blue LEDs as backlight sources, which are arranged in an alternating manner of white light and sapphire blue light, as shown in figure 2 shown.

[0053] According to the size of the display, its backlight is divided into several areas, and each backlight area is a combination of white LEDs and sapphire blue LEDs. The brightness of white LEDs and sapphire blue LEDs in each backlight area is then dynamically adjusted according to the image displayed on the LCD front panel. Finally, due to the use of new white LEDs and sapphire blue LEDs in the backlight, liquid crystal compensation is required for the image displayed on the LCD panel.

[0054] Specifically, the input image should be partitioned first, and the number of partitions depends on the backlight unit, and the maximum value, average value, or root mean square method can be used for partitioning; secondly, the brightness corresponding to each backlight unit...

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Abstract

The invention relates to color range expansion and image display, and provides a backlight source image display method by use of an LCD display. Backlight sources are arranged in a way that white light and sapphire light are alternatively arranged. Particularly, according to the size of the display, the backlight is divided into multiple regions; each backlight region is the combination of the white light LEDs and the sapphire LEDs; according to the difference of display images of the LCD front panel, the brightness of the white light LEDs and the sapphire LEDs in each backlight region are dynamically adjusted; and finally, liquid crystal compensation is performed on images displayed on the LCD panel. The method is mainly used in image display occasions.

Description

technical field [0001] The invention relates to color gamut expansion and image display, in particular to an image display method using a backlight source of an LCD display. Background technique [0002] In 1931, CIE, the International Commission on Illumination, formulated the CIE 1931 RGB system, which stipulated that 700nm red (Red), 546.1nm green (Green) and 435.8nm blue (Blue) were used as the three primary colors. Later, the CIE 1931-xy chromaticity diagram became The most commonly used chart to describe the color range. Due to historical reasons, the color gamut of the current RGB three-primary color video system is very small, covering only 33.25% of the visible colors in nature. In order to make the display can express richer colors, researchers have carried out extensive research work on it. It mainly includes these three aspects: (1) adopt more saturated three primary colors; (2) adopt multi-primary color backlight to expand the color gamut; (3) adopt multi-prim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34G02F1/13357
CPCG02F1/133603G09G3/342
Inventor 雷志春段绿茵徐梦层李昌禄
Owner TIANJIN UNIV