Backlight assembly light guide board production method

Abstract

The present invention provides a light guide plate having high brightness and wide view field angle characteristics and method for mass-producing the light plate high efficiently. The guide plate for dorsal light source components sets to transfer the form and path of the light injecting from the light source, including: prism pattern, which forms on one surface and reflects the light injecting from light source; dispersion pattern, which forms on the prism pattern finely and disperses the injecting light.

Description

technical field [0001] The present invention relates to a light guide plate of a backlight unit and a manufacturing method thereof. More specifically, it relates to a light guide plate having not only high brightness but also a wide viewing angle, and a manufacturing method capable of smoothly mass-producing the light guide plate. Background technique [0002] Generally, a liquid crystal display (LCD: Liquid Crystal Display) is widely used as a display device recently, but since the liquid crystal display uses a liquid crystal that cannot emit light by itself, a backlight unit (BLU: BackLight Unit) is additionally provided as a backlighting device. ). [0003] The backlight assembly is divided into edge type and direct type according to the position of the light source. The so-called direct type means that a light source is arranged on the lower side of the liquid crystal display panel to directly illuminate the entire surface of the panel. The so-called edge type means tha...

AI Technical Summary

Problems solved by technology

[0019] First, in the field of display, it is constantly required to have as high brightness as possible and to have a wide viewing angle, but the above-mentioned light guide plate 30 only has a single-shaped prism pattern 32, so although the prism pattern 32 can provide a certain degree of High brightness characteristics, but due to the relatively narrow field of view, the display quality is reduced

[0020] Second, in the conventional light guide plate 30, the brightness of the edge portion is low and the brightness of the middle portion is high due to the non-uniformity of the light quantity in the light incident portion on the light source 10 side. White lines are produced in some parts, and dark lines are produced in parts with relatively low brightness, so the display quality is degraded

However, since it takes a lot of time, manpower and cost to manufacture a plurality of metal cores by direct processing, there is a problem that the manufacturing efficiency is extremely low, and the accuracy and reproducibility of the processed prism pattern 32 cannot be ensured.

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