Device capable of reducing dark schlieren of light leading board

Abstract

The invention relates to a device, which can reduce the submerged line of light driving plate. It comprises a light driving plate with at least one light inlet side which has at least one linear road on its part surface, at least one lamp pipe which is positioned on the light inlet side out end of the light driving plate, and a reflecting cover which is covered with the light pipe form the light inlet side of light driving plate, so that the light of the light pipe can use the reflecting cover to do reflection and incidences to the light driving plate.

Description

【Technical field】 [0001] The invention relates to a light guide plate, especially a device capable of reducing dark lines of the light guide plate. 【Background technique】 [0002] see figure 1 The backlight module of a conventional liquid crystal display includes a transparent light guide plate 1, and a light tube 2 is provided on one or both sides of the light guide plate 1, and the light is injected into the light guide plate 1 by means of the light tube 2, and finally The light is evenly emitted from the upper surface 3 of the light guide plate 1 to provide a side light source for the liquid crystal element, so that the liquid crystal element can display images. But between the lamp tubes 2 or the area far away from the lamp tubes 2, since the light provided by the lamp tube 2 is less, the light in this area will enter the light guide plate 1 to form a light energy depletion area 4, and the depletion area 4 will follow the light guide plate. The total reflection effect ...

AI Technical Summary

Problems solved by technology

But between the lamp tubes 2 or the area far away from the lamp tubes 2, since the light provided by the lamp tube 2 is less, the light in this area will enter the light guide plate 1 to form a light energy depletion area 4, and the depletion area 4 will follow the light guide plate. The total reflection effect is transmitted to the other side of the light guide plate 1, so that many dark lines 5 are formed on the surface of the light guide plate 1, and the brightness uniformity is not good enough to affect the image quality

As the demand for high-brightness display increases, the number of lamp tubes 2 increases or their spacing increases accordingly, so the light energy depletion area 4 will be more or wider, and the dark lines appearing on the surface of the light guide plate 1 will also be more or less. The wider the image quality will be seriously affected

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