Dichroic film, backlight module and display device

Abstract

The invention provides a splitting film, a backlight module and a display device and relates to the field of display techniques. The splitting performance of the splitting film can be improved. The splitting film comprises a film material body, a plurality of splitting microstructures and a plurality of angle adjusting microstructures, wherein the periodically arranged splitting microstructures are arranged on the light incidence face of the film material body and are of long-strip-shaped structures extending in the longitudinal direction, the surfaces of the splitting microstructures are folded faces formed by connecting a plurality of long-strip-shaped planes extending in the longitudinal direction, the connecting line of two adjacent long-strip-shaped planes in each folded face is in the longitudinal direction, the splitting microstructures enable incident rays to be refracted for the first time, and the incident rays are preliminarily split into a plurality of beams of rays forming different included angles with the vertical line of the film material body; the periodically arranged angle adjusting microstructures are arranged on the light emitting face of the film material body and are of long-strip-shaped structures extending in the longitudinal direction, the angle adjusting microstructures enable the multiple beams of rays split preliminarily to be refracted for the second time, and the included angle formed between the emitting rays and the vertical line of the film material body is increased or reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light splitting film, a backlight module and a display device. Background technique [0002] With the development of display technology, a dual-view display device meets people's needs for viewing different images on the same display. The dual-view display device mainly includes: a display panel, a backlight module arranged on the back of the display panel, that is, a grating arranged on the front of the display panel, wherein each pixel of the display panel includes two R sub-pixels and two G sub-pixels With the two B sub-pixels, two sub-pixels of the same color are arranged adjacent to each other and receive signals belonging to different images. When displaying, due to the blocking effect of the grating on the light, only the light from the right sub-pixel of the two adjacently arranged sub-pixels with the same color can be received from the left side of the display panel,...

AI Technical Summary

Problems solved by technology

However, in the actual application process, it is found that the existing spectroscopic film has poor spectroscopic performance

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