Liquid crystal display device

Abstract

The invention provides a liquid crystal display device which comprises a liquid crystal panel. The liquid crystal panel comprises a quantum dot layer and a liquid crystal layer arranged below the quantum dot layer. The liquid crystal display device also comprises a backlight module arranged below the liquid crystal layer and a glass substrate arranged above the quantum dot layer; the backlight module comprises a backlight source and other optical assemblies; the glass substrate comprises a coloring material and a common glass material; the coloring material is used for blocking light rays, thewavelengths of which are smaller than 420nm, in environmental light; and the ratio of the coloring material and the common glass material is between 0.04 and 0.2. According to the liquid crystal display device provided by the invention, under the circumference of irradiation by the environmental light, the liquid crystal panel can filter ultraviolet light and part of blue rays in the environmental light, and is high in pass rate for light rays of other wavelengths. The whole display picture still has relatively high contrast and color purity, and the caused energy loss is small.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display device. Background technique [0002] At present, a new type of liquid crystal display device adopts a quantum dot liquid crystal panel. The quantum dot liquid crystal panel includes a liquid crystal layer and a quantum dot layer arranged above the liquid crystal layer. The quantum dot layer includes a plurality of quantum dot pixel unit groups arranged in sequence. The dot pixel unit group includes sequentially arranged quantum dot pixel units capable of correspondingly converting the backlight into three primary colors. The quantum dot layer mainly includes red pixel units, green pixel units and blue pixel units, wherein red pixel units are provided with red quantum dot materials; green pixel units are provided with green quantum dot materials; blue pixel units are not provided with quantum dot materials. When the blue backlight shines on the red, gre...

AI Technical Summary

Problems solved by technology

[0003] However, when using this kind of quantum dot liquid crystal panel, since the ultraviolet light and blue light in the external environment will irradiate the quantum dot layer of the liquid crystal panel from the outside, the red quantum dot material in the quantum layer will generate red light when excited, and the green quantum dot material will be excited. When the dot material is excited, it will generate green light. When the LCD panel displays a black screen, there will still be red and green light coming out of the panel, which will affect the display contrast and panel quality.

[0004] In order to avoid the excitation of the red and green quantum dot pixel units by ambient light, pigment substances that transmit red light, green light, and blue light and absorb other colors of light are added to the red, green, and blue pixel units in the prior art. When using this method, part of the light from the backlight will also be absorbed, resulting in low light transmittance and large energy loss, which is not conducive to saving power consumption

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