PS light guide plate with double surfaces of point-like microstructures

Abstract

The invention discloses a PS light guide plate with double surfaces of point-like microstructures. The light guide plate comprises a transparent plate body of a PS material; the transparent plate body includes a light output surface and a reflection surface, light is output via the light output surface, and the reflection surface is opposite to the light output surface; the reflection surface is provided with reflection projections of the same size, the light output surface is provided with scattering projections of the same size, the reflection projections of the spherical cap shape are arranged in a quincunx manner, the scattering projections of the spherical cap shape are arranged in the quincunx manner, and both the reflection projections and the scattering projections are made of the PS material and molded with the transparent plate body in the integrated manner; and the bottom diameter and height of the scattering projections are lower than those of the reflection projections respectively. According to the invention, the light conversion rate can be higher than 80% needless of light guide particles, a traditional laser engraving technology is changed, and the production cost is reduced; the scattering projections further scatter light of the light output surface, and the uniformity of output light can be over 85%; the scattering and reflection projections and the transparent plate are of the same material and molded in the integrated manner to avoid light loss; and the scattering and reflection projections of quincunx arraignment improve the space utilization rate and ensure the reflection rate and the scattering rate.

Description

technical field [0001] The invention relates to the field of optical elements, in particular to a PS light guide plate with double-sided point-shaped microstructure. Background technique [0002] The term light guide plate comes from English LightGuide, which originated from the application of liquid crystal display (LCD). LCD displays the brightness of the display screen through the backlight module, and the light guide plate is an important role in the backlight module. Light guide plates are mostly used in LCD monitors, notebook computers, LCD TVs, mobile phones and various electronic products, including office equipment such as fax machines and copiers, calculators, learning instruments, digital cameras, medical film viewers, watches, electronics, etc. . [0003] The main function of the light guide plate is to direct the incident light from the backlight to the LCD liquid crystal display to show the brightness of the backlight and the display, and at the same time have...

AI Technical Summary

Problems solved by technology

The cross-section of the dots on the dot surface of the traditional light guide plate is mostly a U-shaped groove or a V-shaped groove, and its light-emitting surface is a mirror surface. The engraving process is used for production, the production efficiency is low and the cost is high; on the other hand, the reflection and refraction effect of the U-shaped groove is not as good as that of the V-shaped groove, and the bottom of the V-shaped groove is a tapered structure, which is difficult to process, and it is very easy to produce unqualified processing. Affect product quality, so this kind of U-shaped groove or V-shaped groove can not meet the needs of social development; on the other hand, the light emitting surface is not treated, and the outgoing light is not uniform enough, resulting in less than 70% uniformity of outgoing light. The light effect is generally adopted by mixing light-guiding particles into the material of the transparent plate, which further increases the cost

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