Optical film layer and display device

Abstract

The invention relates to an optical film layer and a display device. The optical film layer comprises an isotropic optical layer, a single-optical-axis anisotropic optical layer and a first optical grating layer, the ordinary light refraction rate of the single-optical-axis anisotropic optical layer is larger than the refraction rate of the isotropic optical layer, a refraction effect is generatedwhen light passes through a junction surface of convex structures, so that light-type energy of a front viewing angle is distributed to a large viewing angle, and viewing angle color deviation is improved; the first optical grating layer is stacked at the side, away from the isotropic optical layer, of the single-optical-axis anisotropic optical layer, or embedded into the side, away from the isotropic optical layer, of the single-optical-axis anisotropic optical layer, natural light can be changed into polarized light, and a polarizing plate with large thickness is replaced. Therefore, the color deviation of the large viewing angle of a display panel can be improved through the optical film layer, and the thickness of the display panel can also be small.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical film layer and a display device. Background technique [0002] The current large-size LCD panels usually use VA (Vertical Alignment, vertical alignment) LCD panels or IPS (In-Plane Switching, in-plane switching) LCD panels. Compared with IPS LCD panels, VA-type LCD panels have higher production efficiency and low The manufacturing cost is superior, but the optical properties have obvious optical property defects compared with IPS liquid crystal panels, especially large-size panels require larger viewing angles for commercial applications. For example, the VA-type liquid crystal panel driving at a large viewing angle rapidly saturates the brightness with the voltage, which causes the image quality contrast and color shift of the viewing angle to deteriorate seriously compared with the image quality of the front view, resulting in the angular shift of the viewing angle....

AI Technical Summary

Problems solved by technology

[0002] The current large-size LCD panels usually use VA (Vertical Alignment) LCD panels or IPS (In-Plane Switching, in-plane switching) LCD panels. Compared with IPS LCD panels, VA-type LCD panels have higher production efficiency and low Advantages in manufacturing cost, but in terms of optical properties, compared with IPS liquid crystal panels, there are more obvious defects in optical properties, especially for large-size panels that require a larger viewing angle for commercial applications.

For example, the VA-type liquid crystal panel drives in a large viewing angle and the brightness rapidly saturates with the voltage, which causes the image quality contrast and color shift of the viewing angle to deteriorate seriously compared with the image quality of the front view, resulting in angular shift.

[0003] Therefore, the exemplary VA-type liquid crystal panel has the problem of image quality contrast and color shift at large viewing angles, which is worse than that of the front view image quality, resulting in the problem of angular shift.

Images