Light conduction device, backlight module and display device

Abstract

The invention belongs to the field of display and discloses a light conduction device, a backlight module and a display device. The light conduction device is matched with a panel to form the display device, and comprises a first prism layer, wherein the first prism layer is provided with multiple prism strips on the surface away from the panel, and is provided with multiple reflection slots in the surface facing the panel, multiple reflection surfaces matched with prism surfaces of the first prism strips are formed on the reflection slots, the reflection surfaces reflect received light rays to the corresponding prism surfaces, and the prism surfaces of the first prism strips are used for emitting the received light rays, reflected by the corresponding reflection surfaces, to the panel in a first direction. According to the light conduction device, by the matching of the prism strips and the reflection slots, the light rays of a light source are emitted to the panel in the single direction to form a backlight with a narrow viewing angle; even if the incident angle of the light source is bigger, normal and uniform backlight can be formed.

Description

technical field [0001] The invention relates to the display field, in particular to a light-conducting device, a backlight module and a display device. Background technique [0002] Liquid crystal displays (LCDs) have been widely used in various electronic products. Most of the LCDs are backlight LCDs, which include a liquid crystal panel and a backlight module. The backlight module can be divided into two types according to the incident position of the light source: a side-light type backlight module and a direct-light type backlight module. [0003] In order to improve the brightness of the backlight module as much as possible, a prism-type light guide plate has appeared at present. Due to the scattering of the prism light guide plate, the viewing angle of the light passing through the panel is relatively large, which affects the display effect. If the incident angle of the light source is too large, the exit angle cannot completely reverse the propagation direction of th...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the brightness of the backlight module as much as possible, a prism-type light guide plate has appeared at present. Due to the scattering of the prism light guide plate, the viewing angle of the light passing through the panel is relatively large, which affects the display effect.

If the incident angle of the light source is too large, the exit angle cannot completely reverse the propagation direction of the light

Therefore, a normal backlight will not be formed directly in front of the panel

Moreover, due to the deflection of light in existing transparent display devices, objects directly behind cannot be seen through this prism structure

At the same time, the prism structure will cause the scene behind to be blurred

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