High-pressure and high-temperature baking process and device for light guide plates

Abstract

The invention relates to the field of backlight module high and new technology, in particular to a high-pressure and high-temperature baking device for light guide plates. The device comprises weights, tempered glass, light guide plates and a constant-temperature box bottom plate, wherein a plurality of tempered glass and light guide plates which are distributed alternately are arranged between the weights and the constant-temperature box bottom plate, the light guide plates are arranged below the tempered glass, and the constant-temperature box bottom plate is fixedly connected with two symmetrically distributed supporting tables. The invention further discloses a high-pressure and high-temperature baking process for light guide plates, and the high-pressure and high-temperature baking process for light guide plates is characterized in that the high-temperature baking process for light guide plates is added before hot pressing on the premise that the original preparation process for light guide plates is not changed basically, warped raw materials can be effectively recovered to a zero-warpage state, the rejection probability of the raw materials is greatly reduced, and the preparation cost of the light guide plates is reduced.

Description

technical field [0001] The invention relates to the high-tech field of backlight modules, in particular to a heavy-pressing high-temperature baking process of a light guide plate and a device thereof. Background technique [0002] The existing backlight system is mainly composed of light source, reflective film, light guide plate, double-layer orthogonal prism and other structures. Based on the development trend of structural integration, lightness and low cost, many scientific research institutions and manufacturers at home and abroad have adopted the method of reducing the thickness of the light guide plate to reduce the cost and achieve the best performance indicators. [0003] The mainstream of the existing light guide plate technology is the hot pressing process, using methyl methacrylate (PMMA), commonly known as plexiglass, and optical grade PMMA is an optical material with high transparency, light weight, low price and easy molding among synthetic organic plastics. ...

AI Technical Summary

Problems solved by technology

[0004] The semi-finished raw materials after cutting often warp irregularly due to the long storage time. The thinner the thickness, the easier it is to warp, which will bring serious black and white shadows during the hot pressing process, or the misalignment of the hot pressing screen and other undesirable phenomena.

As a result, these raw materials cannot be used, resulting in large-scale scrapping and greatly increasing the processing cost of the light guide plate. For this reason, we provide a light guide plate heavy-pressure high-temperature baking process and its device

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