Optical film layer and display device

Abstract

The invention relates to an optical film layer and a display device. A refractive index of ordinary light of a second single-optical-axis optical layer of the optical film layer is less than that of extraordinary light of a first single-optical-axis optical layer, and a width of a protruded structure is within the wavelength range of incident light, when light penetrates through an interface of agroove and the protruded structure, a diffraction effect can be generated, so that light type energy of a front visual angle is distributed to a large visual angle, and a color deviation of an visualangle is reduced; a first grating layer of the optical film layer is overlapped on the side, away from the first single-optical-axis optical layer, of the second single-optical-axis optical layer, oris embedded in the side, away from the first single-optical-axis optical layer, of the second single-optical-axis optical layer; natural light can be turned into polarized light, a polarizer with a thicker thickness is replaced; and thus the optical film layer can not only improve the color deviation of the large visual angle of a display panel, but also can make the thickness of the display panelthinner.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical film layer 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. [0...

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 typical VA-type liquid crystal panel has the problem of large viewing angle image quality contrast and color shift, which is seriously deteriorated compared with the front view image quality, resulting in the problem of viewing angle shift.

Images