Direct downward background module

Abstract

A module for poor light consists of a light guide plate with light incoming face which is not plane face and light outgoing face which is above the light incoming face, a reflecting sheet and multiple light source. Multiple groove is set at the light guide plate as each light source is set in correspondence to a groove. The light from each light source reaches to the light guide plate by the light incoming face via reflection of the reflecting sheet the light is projected out from the light guide plate by abovesaid light outgoing face.

Description

technical field [0001] The invention relates to a backlight module applied to a display, in particular to a radial direct-down backlight module. Background technique [0002] Figure 1A It is a perspective view of a conventional direct-lit backlight module of a liquid crystal display. Such as Figure 1A As shown, the existing direct type backlight module 10 includes a light guide plate (light guideplate) 11, a reflector (reflector) 12 and a plurality of lamp tubes 13; wherein, a plurality of lamp tubes 13 are arranged on the reflector plate 12 and the light guide plate Between 11. [0003] Generally speaking, the shortest distance between the light guide plate and the light tube is likely to produce the maximum luminous brightness. Further, as the arrangement of the plurality of lamp tubes changes, changes in luminous brightness, that is, changes in light and dark stripes, are likely to occur on the light-emitting plane of the light guide plate adjacent to the liquid cryst...

AI Technical Summary

Problems solved by technology

However, the light beam that is not reflected by the V-shaped reflector and directly illuminates the light guide plate will still produce bright and dark stripes on the light-emitting surface 35 of the light guide plate adjacent to the liquid crystal panel.

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