Optical film layer and display device

Abstract

The invention relates to an optical film layer and a display device. The optical film layer comprises a negative optically-uniaxial optical layer, a positive optically-uniaxial optical layer and a first grating layer; a plurality of grooves are formed at one side of the negative optically-uniaxial optical layer; the positive optically-uniaxial optical layer comprises a plate-shaped part and a plurality of projection structures attached to one side of the plate-shaped part and matched with the grooves in shape and size; an extraordinary light refractive index of the positive optically-uniaxialoptical layer is greater than an ordinary light refractive index of the negative optically-uniaxial optical layer; and the first grating layer is laminated at one side of the positive optically-uniaxial optical layer, which faces away from the negative optically-uniaxial optical layer, or embedded at one side of the positive optically-uniaxial optical layer, which faces away from the negative optically-uniaxial optical layer. The optical film layer not only can improve the color shift of a large viewing angle of a display panel, but also can enable the display panel to be thinned.

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 existing VA-type liquid crystal panel has the problem of image quality contrast and color shift at large viewing angles, which is seriously worse than that of the front view image quality, resulting in the problem of viewing angle shift.

Images