Liquid crystal display device

Abstract

A liquid crystal display device: a liquid crystal panel (800) thereof comprises a first substrate (100) and a second substrate (200), which are vertically disposed opposite to each other; the first substrate (100) comprises a first base substrate (110), a quantum dot color filter (120), and an encapsulation layer (130), which are disposed sequentially from top to bottom; the quantum dot color filter (120) comprises a pixel spacer layer (101), and a plurality of color resisting units (102) that are spaced apart by means of the pixel spacer layer (101); the plurality of color resisting units (102) comprises a first color resisting unit (121), a second color resisting unit (122) and a third color resisting unit (123), at least one of which being a quantum dot color resisting unit and a transparent stacked layer (103) further being disposed between the quantum dot color resisting units and the encapsulation layer (130) in the quantum dot color filter (120) such that the quantum dot color resisting units stand on the encapsulation layer (130) from a higher height than the pixel spacer layer (101); the present invention may prevent a black screen of the liquid crystal display device from exhibiting the phenomena of brightening and color cast when displaying at a large viewing angle, thereby improving display efficiency.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display device. Background technique [0002] With the development of science and technology and the progress of society, people are increasingly dependent on information exchange and delivery. As the main carrier and material basis of information exchange and transmission, display devices have become a hotspot and highland that many scientists engaged in information optoelectronic research are vying to seize. [0003] Quantum Dots (Quantum Dots, referred to as QD) are invisible to the naked eye, extremely small inorganic nanocrystals, most of which are three-dimensional nanomaterials composed of II-VI or III-V elements. Due to the quantum confinement effect, the transport of electrons and holes inside it is restricted, so that the continuous energy band structure becomes a separated energy level structure. Whenever excited by external energy such as light or ...

AI Technical Summary

Problems solved by technology

In the optical path of the liquid crystal display panel, the actual optical path of the vertically incident light and the obliquely incident light passing through the liquid crystal layer 30 are different, such as image 3 As shown, when the pixel spacing layer 221 and the red color-resist unit 223 and the green color-resist unit 224 containing the quantum dot material stand on the encapsulation layer 23 at the same height, almost all the light can be incident on the red color-resist unit containing the quantum dot material. The resistance unit 223 and the green color resistance unit 224 have a maximum incident angle a close to 90°, so that under the black picture signal, even if a black picture with a brightness as low as 0.05 nits is displayed at the front view angle, in the direction of squinting, it is likely to be caused by The deviation of the optical path produces a change in polarization, and the quantum dot material is excited due to light leakage at the viewing angle, which in turn causes the black screen to appear bright and color cast when displayed at a large viewing angle

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