Liquid crystal display device

Abstract

The invention discloses a liquid crystal display device, which comprises a first substrate, a second substrate and a liquid crystal layer. A pixel electrode of the first substrate comprises a plurality of first slits, a plurality of second slits and a third slit, wherein the first slits and the second slits are connected with the third slit; the first slits and the second slits respectively extend along a first vector and a second vector by taking connecting points with the third slit as starting points; the second substrate comprises a common electrode and an orientation layer which covers the common electrode; the liquid crystal layer is configured between the pixel electrode and the orientation layer; liquid crystal molecules of the liquid crystal layer close to the orientation layer are pre-inclined due to the orientation of the orientation layer; the projection of the long axes of at least partial pre-inclined liquid crystal molecules on the second substrate takes one end of each liquid crystal molecule close to the orientation layer as a starting point so as to form a third vector; an included angle between the third vector and the first vector is theta 1; and an included angle between the third vector and the second vector is theta 2, wherein the theta 1 is more than or equal to 90 degrees and less than or equal to 160 degrees, and the theta 2 is more than or equal to 90 degrees and less than or equal to 160 degrees. The transmittance and the visual angle symmetry can be improved.

Description

technical field [0001] The present invention relates to a display device, and in particular to a liquid crystal display. Background technique [0002] The rapid progress of the multimedia society is mostly due to the rapid progress of semiconductor devices or display devices. As far as display devices are concerned, liquid crystal display devices with superior characteristics such as high image quality, good space utilization efficiency, low power consumption, and no radiation have gradually become the mainstream of the market. [0003] At present, the performance requirements of the market for liquid crystal display devices are towards high contrast ratio, no gray scale inversion, low color shift, high luminance, high color Features such as richness, high color saturation, fast response and wide viewing angle. At present, the technologies that can meet the requirement of wide viewing angle include twisted nematic (TN) liquid crystal plus wide viewing film (wide viewing fi...

AI Technical Summary

Problems solved by technology

[0004] However, in a twisted nematic liquid crystal display device, an alignment layer must be used to align the liquid crystal molecules above and below the liquid crystal layer, which makes the process time longer and the cost higher

In addition, the twisted nematic liquid crystal display device has disadvantages such as asymmetrical viewing angle, high brightness of the dark state picture, and low contrast ratio.

In the vertical alignment liquid crystal display device, there are disadvantages such as poor light transmittance, slow response speed and serious color shift.

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