Light guide plate of backlight unit with patterns

Abstract

The present invention relates to back light unit light guide plate composing picture on surface in laser picture composition mode, the picture composition mode can control the picture composition curved deep profile line. The invention concretely relates to a light guide plate of picture formed with the picture composition mode, according to the picture composition mode, deepness of the picture varies with distance to the light source when composing picture on the light guide plate, such that the reflection of light of light-in section is minimized in range of standard value, therefore the light source is transmitted to the back light section with minimized loss.

Description

technical field [0001] The present invention relates to a method of using a laser to form a curved pattern depth contour line on the surface of a light guide plate and a backlight unit light guide plate with a pattern formed by using the method, in particular to a light guide plate with a pattern formed by a patterning method, When the pattern is composed on one side of the light guide plate, the depth of the pattern away from the light source is deepened, so that the light reflection of the light incident part is minimized within the standard value, and the light source is transmitted to the backlight part with the minimum loss. Background technique [0002] In the field of flat panel display technology, liquid crystal displays, which are the most widely commercialized and practical, cannot emit light by themselves, so a light-emitting device called a backlight unit (Backlight unit) needs to be installed. The performance of liquid crystal displays not only depends on its own...

AI Technical Summary

Problems solved by technology

[0008] First of all, the mechanical cutting method using diamond has the following disadvantages: its speed is relatively slow, which reduces productivity, light cannot be scattered uniformly due to the roughness of the processed surface, and the reproducibility of reproducing the desired pattern form as it is is reduced

However, because it only adjusts the Y-axis displacement (displacement) by adjusting the size of individual graphics and the distance between X-axis and Y-axis between individual graphics, low-brightness dark lines (dark lines) will appear in places where the displacement changes greatly.

[0016] In addition, as the adjustment of the laser duty ratio (duty) in the X-axis and Y-axis is irregular, there will be moiré phenomena such as stripes or spots on the screen.

[0017] In addition, there are only three factors to adjust the duty cycle of the laser, such as the X-axis distance, the Y-axis distance, and the size of the bar graph, so it is not convenient to adjust the brightness and the distribution of the appearance of the graph, and the efficiency is low

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