Optical composite film and display panel

Abstract

The invention relates to an optical composite film and a display panel. The optical composite film comprises a reflective grating film layer, a first single-optical-axis optical film layer and a second single-optical-axis optical film layer. The first single-optical-axis optical film layer comprises a plate-shaped part and a plurality of refraction parts. The plate-shaped part is arranged on the reflective grating film layer. The multiple refraction parts are formed on the side, away from the reflective grating film layer, of the plate-shaped part. The multiple refraction parts are arc surfacecolumns or quadrangular prisms. The unusual light refractive index of the first single-optical-axis optical film layer is greater than the usual light refractive index of the first single-optical-axis optical film layer. The second single-optical-axis optical film layer is stacked on the side, close to the refraction parts, of the plate-shaped part. The multiple refraction parts are accommodatedin the second single-optical-axis optical film layer. The usual light refractive index of the second single-optical-axis optical film layer is less than the unusual light refractive index of the firstsingle-optical-axis optical film layer. According to the optical composite film, large-visual-angle color cast of the display panel can be reduced, and the display panel can be further thin.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical composite film and a display panel. Background technique [0002] The current large-size LCD (Liquid Crystal Display, liquid crystal display) panels include VA (Vertical Alignment, vertical alignment) liquid crystal panels and IPS (In-Plane 1 Switching, plane switching) liquid crystal panels, etc. Compared with IPS liquid crystal panels, VA type liquid crystal panels have the advantages of higher production efficiency and lower manufacturing cost, but in terms of optical properties, there are more obvious optical property defects compared with IPS liquid crystal panels. In particular, large-size panels require larger viewing angles for commercial applications. The brightness of VA-type liquid crystal panels rapidly saturates with voltage at large viewing angles, resulting in a serious deterioration in viewing angle image quality contrast and color shift compared to sq...

AI Technical Summary

Problems solved by technology

[0002] The current large-size LCD (Liquid Crystal Display, liquid crystal display) panels include VA (Vertical Alignment, vertical alignment) liquid crystal panels and IPS (In-Plane 1 Switching, plane switching) liquid crystal panels, etc. Compared with IPS liquid crystal panels, VA type liquid crystal panels have the advantages of higher production efficiency and lower manufacturing cost, but in terms of optical properties, there are more obvious optical property defects compared with IPS liquid crystal panels. In particular, large-size panels require larger viewing angles for commercial applications. The brightness of VA-type liquid crystal panels rapidly saturates with voltage at large viewing angles, resulting in a serious deterioration in viewing angle image quality contrast and color shift compared to square-view image quality, resulting in color shift. The problem

[0003] In addition, the structure of the current LCD display panel is generally a laminated structure, that is, polarizers are attached above and below the liquid crystal layer. However, the thickness of a single layer of the current polarizer is about 200 μm, and the total of the upper and lower layers of polarizers requires 400 μm. thicker

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