Continuous processing method for diffuser plate with surface microstructure

A processing method and diffusion plate technology, applied in chemical instruments and methods, lamination auxiliary operations, lamination, etc., can solve the problems of short contact time between plates and rollers, insufficient pressure holding time, and poor processing of rollers, etc., to achieve easy Effects of processing, processing cost reduction, and simple processing method

Active Publication Date: 2011-11-23
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the rollers are not easy to process, the contact time between the sheet and the rollers is short, and the pressure holding time is not enough, which is easy to cause shrinkage deformation, etc.
Therefore, neither of these two processing methods is the most ideal processing method.

Method used

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  • Continuous processing method for diffuser plate with surface microstructure
  • Continuous processing method for diffuser plate with surface microstructure
  • Continuous processing method for diffuser plate with surface microstructure

Examples

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Embodiment Construction

[0030] Diffusion plates of any size can be processed by this processing method, and the processing of a diffusion plate for a 17-inch liquid crystal display with a length, width, and height of 5, 37, and 34 cm is taken as an example for illustration. Extrude a PMMA plate with a width of 37 cm and a thickness of 2 mm with an ordinary extruder.

[0031]If device 1 is used, the operation steps are as follows: first, splice the mold blocks into a width of 36 cm, and install them at the designated positions. Use an extruder to extrude a single-layer or multi-layer diffusion plate substrate 3, and the tractor 2 will pull the substrate to the imprinting area, which is the traction process; the motor 11 drives the screw 5 to rotate, and the upper mold 4 moves downward to press the substrate. On the lower mold 1, copy the microstructure on the mold to the uncooled substrate, which is the mold clamping process; the lead screw 5 of the horizontal screw drive system rotates to drive the s...

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Abstract

The invention relates to a continuous processing method for a diffuser plate with a surface microstructure and belongs to the field of continuous pressing. A microstructure is formed on the diffuser plate. After the diffuser plate is pressed, the microstructure on a mould is precisely copied onto the diffuser plate and a light source is uniformly scattered after passing through the diffuser plate, namely after the light source enters into the diffuser plate, the diffuser plate can homogenize the light source under the effect of the scattering of the microstructure. Two devices are used for realizing the continuous processing of the diffuser plate. In a first scheme, the device is composed of upper and lower moulds, a motor, a screw rod, and the like, wherein the screw rod is used for controlling the opening/closing and the left and right moving of the moulds. The first scheme has the advantage of stable and precise motion. In a second scheme, the device is composed of upper and lower moulds, a cylinder, a connecting rod, a rail, a sliding block, and the like, wherein the cylinder is used for pushing the connecting rod to control the upper mould to move up and down so as to finish the mould opening/closing operation, and the sliding block slides on the rail so as to move the moulds left and right. The second scheme has the advantages that the structure is simple, the operation is flexible and the cost is low.

Description

technical field [0001] The invention proposes a processing method for a diffusion plate with a surface microstructure, the main technology is continuous embossing, and the processing device includes an embossing device such as a tractor and a mold. The process includes: pulling the single or multi-layer sheet extruded from the extruder to the imprinting area, the mold is closed for imprinting, at this time the microstructure on the mold is copied to the diffuser plate, and then the pressure is maintained and the sheet Move a certain distance, and finally the mold opens and returns quickly for the next imprint. Through this process, the microstructure on the mold is copied to the diffuser plate to be processed, resulting in a diffuser plate with surface microstructure. Background technique [0002] The diffusion plate is a light scattering element, and its function is to diffuse the point light source or line light source into a uniform surface light source. Currently, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/10B32B38/00
Inventor 吴大鸣周洋庄俭张亚军何晓祥
Owner BEIJING UNIV OF CHEM TECH
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