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 single optical axis anisotropic optical layer, an isotropic optical layer and a first grating layer. The refractive index of the isotropic optical layer is greater than the ordinary light refractive index of the single optical axis anisotropic optical layer. Light generates refraction when passing through the interface of a groove and a raised structure so that positive visual angle light type energy is distributed with a large visual angle and visual angle color cast is improved. The firstgrating layer is laminated on the side of the isotropic optical layer which is far away from the single optical axis anisotropic optical layer, or is embedded on the side of the isotropic optical layer which is far away from the single optical axis anisotropic optical layer so that natural light can become polarized light and a polarizing plate with a thick thickness is replaced. The optical filmlayer can be used to improve the large visual angle color cast of a display panel and the thickness of the display panel can become thinner.

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.

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