Manufacturing method of light guide plate
A production method and technology for a light guide plate, which are applied in the photoengraving process, optics, light guide and other directions of the pattern surface, can solve the problems of poor uniformity of the light guide plate, increase the production cost, affect the uniformity of the finished product of the light guide plate, etc. The effect of reducing production cost, improving product yield and production efficiency
Inactive Publication Date: 2012-08-29
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology
However, the viscosity of the molten resin during injection molding will affect the uniformity of the finished light guide plate
If the viscosity of the molten resin is high when it is injected, the molten resin will solidify before being transported around the cavity, resulting in poor uniformity of the light guide plate
In addition, if injection molding is used to make large-sized light guide plates, corresponding large-sized molds and injection molding equipment are required, which will undoubtedly increase production costs
Method used
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[0015] The manufacturing method of the light guide plate provided by the technical solution will be described in detail below with reference to the embodiments and the accompanying drawings.
[0016] refer to figure 1 , the manufacturing method of the light guide plate provided by the embodiment of the technical solution includes the following steps:
[0017] Step 1: Make a plate-shaped preform 50 with molten resin, and cold press to obtain a plate 100 with a predetermined size.
[0018] In this embodiment, the tablet 100 is obtained through the following method. see figure 2 , firstly, a processing device 10 needs to be provided. The processing device 10 includes a table 11 , a roller 12 , a heating device 13 and a cooling device 14 . The table 11 has a load-carrying surface 111 for carrying the resin and for transporting the subsequent preforms made of the resin to the cooling device 14 . The roller 12 is arranged on the top of the workbench 11 , and it can move up and...
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The invention relates to a manufacturing method of a light guide plate, comprising the following steps of: producing a platy performing body from molten resin and cooling to obtain a flat plate with a preset size; forming a liquid state photoresist layer on the surface of the flat plate; exposing the photoresist layer by adopting an exposing device; and moving an uncured photoresistor so as to form a plurality of convex screen dots on the surface of the flat plate. By using the manufacturing method of the light guide plate, moulds with large size and jetting and forming equipment are not needed any more and the shapes and the sizes of the formed screen dots are controllable; and the manufacturing method has the advantages of low cost, high precision, simple process, rapidness and the like.
Description
technical field [0001] The invention relates to the field of making light guide plates, in particular to a method for making a large-size light guide plate. Background technique [0002] With the large-scale development of flat-panel liquid crystal displays, the light guide plate, which is an important component of the light source system of the liquid crystal display, has been paid more and more attention. The surface of the light guide plate is usually provided with a plurality of dots to destroy the total reflection condition of the light beam transmitted inside the light guide plate, and to scatter the light beam so as to improve the uniformity of the outgoing light. There are mainly two methods of manufacturing light guide plate dots: printing and non-printing. [0003] The printing type refers to coating ink dots on the bottom surface of the light guide plate manufactured by the injection molding process to form specific light exit holes. Since light must pass throug...
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IPC IPC(8): G02B6/00G03F7/00G03F7/20B29C43/00
Inventor 张仁淙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD