Backlight source system made based on hologram technique

Abstract

A backlight source system based on the holographic technology belongs to the field of the optical liquid crystal display technology. In order to solve the problem of the illumination uniformity of the backlight system, the present invention discloses a backlight source system based on the holographic technology, the system is combined and connected seamlessly into a whole by a plurality of backlight lighting units, and each backlight lighting unit includes a light source, a light guide plate, a reflective film, a holographic film and a brightness enhancement film; the light guide plate is a wedge-shaped plate; light source is sealed and arranged on the side of the light guide plate; the reflective film is attached to the lower surface of the light guide plate; the holographic film which is a polymerization film including the hologram is attached to the upper surface of the light guiding plate; the brightness enhancement film is attached to the holographic film. The present invention is simple in structure, significant in operation, and can solve the beam quality of the backlight source system, further improve the uniformity of the light-out surface of the backlight source system, thereby ensuring that the backlight source system can light the LCD with a uniform lighting.

Description

technical field [0001] The invention relates to a backlight system based on holographic technology, which can be used in the backlight system of a liquid crystal display and belongs to the technical field of optical liquid crystal display. Background technique [0002] Since the liquid crystal itself does not emit light, a backlight is required to illuminate the liquid crystal. In order to make the backlight evenly illuminate the liquid crystal, it is necessary to use a light guide system to convert the light emitted by the light source into a uniform plane light. The light source and the light guide system form the backlight system. [0003] In the existing technology of backlight system, such as figure 1 As shown, it includes a light source 1 , a light guide plate 2 , a diffuser dot 3 , a reflective film 4 , a diffuser film 5 and a brightness enhancement film 6 . Such as figure 2 As shown, after the light emitted by the light source 1 enters the light guide plate 2, pa...

AI Technical Summary

Problems solved by technology

Because the multilayer optical film is used in this system, the cost of making the backlight system is very high; at the same time, the scattering of the light by the multilayer optical film layer makes the light exit angle very large, which reduces the brightness of the light exit surface of the backlight system; The absorption of light energy by the multilayer optical film is very serious, resulting in a decrease in the utilization rate of light energy in the backlight system

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