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A method of preparing micro-lattice pattern on PMMA light guide plate

A micro-lattice and light guide plate technology, applied in the field of light guide plates, can solve the problems of low production efficiency, high cost, uneven astigmatism, etc., and achieve the effects of high production efficiency, reduced volatilization, and small size

Active Publication Date: 2018-01-26
SHENZHEN TIANNUOTONG OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a micro-lattice pattern on a PMMA light guide plate, aiming to simultaneously solve the problems of the prior art such as polluted environment, uneven astigmatism, easy falling off of dots, difficult control of ink viscosity, high cost, and low production cost. A series of problems with low efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] S11. Design the circular micro-dot matrix in the computer, and print the circular micro-dot matrix on the polyvinyl alcohol film with a high-precision inkjet printer;

[0040] S12. adopt the method for roller coating to coat polyurethane coating on PMMA light guide plate substrate;

[0041] S13. Paste the polyvinyl alcohol film on the PMMA light guide plate coated with polyurethane coating, the surface containing the micro-lattice pattern is in contact with the coating, and dry it in a drying oven at 50° C. for 5 minutes;

[0042] S14. Soak the PMMA light guide plate affixed with the polyethylene film in water for 2 minutes to remove the polyvinyl alcohol film, and obtain the circular micro-dot matrix required by the design on the PMMA light guide plate.

Embodiment 2

[0044] S21. Design the diamond-shaped micro-dot matrix in the computer, and use a high-precision inkjet printer to print the diamond-shaped micro-dot matrix on the polyvinyl alcohol film;

[0045] S22. adopt dipping method to coat epoxy resin coating on PMMA light guide plate base material;

[0046] S23. Paste the polyvinyl alcohol film on the PMMA light guide plate coated with epoxy resin coating, the surface containing the micro-lattice pattern is in contact with the coating, and dry in a drying oven at 70°C for 3 minutes;

[0047] S24. Soak the PMMA light guide plate affixed with polyethylene film in water for 1 minute to remove the polyvinyl alcohol film, and obtain the diamond-shaped micro-lattice matrix required by the design on the PMMA light guide plate.

Embodiment 3

[0049] S31. Design a rectangular micro-dot matrix in the computer, and print the rectangular micro-dot matrix on the polyvinyl alcohol film with a high-precision inkjet printer;

[0050] S32. Coating a phenolic resin coating on the PMMA light guide plate substrate by spraying;

[0051] S33. Paste the polyvinyl alcohol film on the PMMA light guide plate coated with phenolic resin coating, the surface containing the micro-lattice pattern is in contact with the coating, and after drying for 4 minutes in a drying oven at a temperature of 60 ° C;

[0052] S34. Soak the PMMA light guide plate with the polyethylene film in water for 2 minutes to remove the polyvinyl alcohol film, and obtain the rectangular micro-dot matrix required by the design on the PMMA light guide plate.

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PUM

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Abstract

The invention applies to the light guide plate field, and provides a method for preparing microarray patterns on a PMMA (polymethyl methacrylate) light guide plate. The method for preparing the microarray patterns on the PMMA light guide plate includes following steps: using a computer to design the microarray patterns, and using an ink jet printer to print the microarray patterns on a polyvinyl alcohol film; coating the PMMA light guide plate with a coating used to adhere the PMMA light guide plate to the polyvinyl alcohol film; pasting the polyvinyl alcohol film with the microarray patterns printed on the coating of the PMMA light guide plate, and performing heat treatment on the PMMA light guide plate; dipping the PMMA light guide plate after being heated in water so as to remove the polyvinyl alcohol film, wherein accuracy of the ink jet printer ranges from 1000dpi (dots per inch) to 3000dpi, and the ink jet printer uses reflexive printing ink to print. The method for preparing the microarray patterns on the PMMA light guide plate is used to prepare the microarray patterns on the PMMA light guide plate, and has the advantages of being free of environment pollution, low in cost and high in production efficiency.

Description

technical field [0001] The invention belongs to the field of light guide plates, in particular to a method for preparing a micro-lattice pattern on a PMMA light guide plate. Background technique [0002] In recent years, with the colorization and enlargement of liquid crystal displays, their application fields are more extensive, such as notebook computers, various desktop computers and LCD TVs, etc. Since the liquid crystal itself cannot emit light, it is necessary to use the light source system as the display of the liquid crystal display A light source, such as a backlight module, wherein the light guide plate is an important component in the backlight module, mainly used to guide the transmission direction of the light beam emitted by the light source, and transform the line light source or point light source into a surface light source. [0003] In order to improve the uniformity of light emission, generally a plurality of dots or micro-lattice patterns are set on the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00
CPCG02B6/0043G02B6/0065
Inventor 袁志庆庄壮坤
Owner SHENZHEN TIANNUOTONG OPTOELECTRONICS TECH