Optical composite film, display panel, and display device

Abstract

The present invention relates to an optical composite film, a display panel, and a display device. The optical composite film comprises a single-optical-axis optical film layer, a substrate layer anda reflection grating film layer, the single-optical-axis optical film layer comprises a plate-shaped portion and a plurality of refraction portions formed on one side of the plate-shaped portion, andthe plurality of refraction portions are cambered surface columns or quadrangular columns; the substrate layer is laminated on one side of the plate-shaped portion close to the refraction portions, the plurality of refraction portions are accommodated in the substrate layers, and an extraordinary light refractive index of the single-optical-axis optical film layer is larger than the refractive index of the substrate layer; and the reflection grating film layer is arranged on one side of the substrate layer away from the single-optical-axis optical film layer. The above optical composite film can not only improve the large view angle color cast of the display panel, but also can reduce the thickness of the display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical composite film, a display panel and a display device. 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 Switching, in-plane switching) liquid crystal panels, etc. Compared with IPS liquid crystal panels, VA-type liquid crystal panels have more High production efficiency and low manufacturing cost have advantages, but compared with IPS liquid crystal panels, there are obvious optical property defects in optical properties, especially large-size panels require a larger viewing angle for commercial applications, and VA-type liquid crystal panels are used in The brightness of the large viewing angle is rapidly saturated with the voltage, which causes the image quality contrast and color shift of the viewing angle to det...

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 Switching, in-plane switching) liquid crystal panels, etc. Compared with IPS liquid crystal panels, VA-type liquid crystal panels have more High production efficiency and low manufacturing cost have advantages, but compared with IPS liquid crystal panels, there are obvious optical property defects in optical properties, especially large-size panels require a larger viewing angle for commercial applications, and VA-type liquid crystal panels are used in The brightness of the large viewing angle is rapidly saturated 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 problem of color shift

[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

Images