Anti-scratching optical reflecting film and manufacturing method of the same

An optical reflection, anti-scratch technology, applied in optics, optical components, diffusing components, etc., can solve the problems of easily scratched light guide plate, folded or scratched reflective film, etc., to reduce scratches, uniform brightness, Significant scratch resistance

Active Publication Date: 2013-04-24
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the defect that the existing reflective film is easy to scratch the light guide plate or the reflective film it

Method used

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  • Anti-scratching optical reflecting film and manufacturing method of the same
  • Anti-scratching optical reflecting film and manufacturing method of the same
  • Anti-scratching optical reflecting film and manufacturing method of the same

Examples

Experimental program
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Effect test

Example Embodiment

[0038] The preparation method of the scratch-resistant optical reflective film provided by the present invention includes the following steps:

[0039] (1) Preparation of coating solution: add adhesive, particles, ultraviolet absorber, and solvent in sequence, and stir for 1-3 hours;

[0040] (2) Coat the coating liquid obtained in step (1) uniformly on the substrate, and bake it at 80-120°C for 1-30 minutes.

[0041] The scratch-resistant optical reflective film is prepared according to the above method, and the test methods for the properties of the obtained reflective film are briefly described as follows:

[0042] Scratch degree: Put the reflective film into the backlight module, and then put it into the vibration test box for a 2-hour vibration test. After the vibration test is completed, take out the light guide plate and the reflective film, and observe the light guide plate and the reflective film. Scratches on the contact side of the light guide plate.

[0043] Vibration exper...

Example Embodiment

[0045] Example 1

[0046] The scratch-resistant optical reflective film is prepared according to the above method. The substrate used is white PET with a thickness of 150μm. There is a protective coating on the white PET. The adhesive used for the coating is a polyurethane adhesive, and the adhesive is 100 parts by weight , The particles are 35 parts by weight. The particles include silica particles accounting for 20% of the total weight of the particles, with a particle size of 5 μm; and nylon particles accounting for 80% of the total weight of the particles, with a particle size of 10 μm. The thickness of the adhesive layer after drying is 8 μm.

Example Embodiment

[0047] Example 2

[0048] The scratch-resistant optical reflective film is prepared according to the above method. The substrate used is white PET with a thickness of 188μm. There is a protective coating on the white PET. The adhesive used for the coating is an acrylic adhesive, and the adhesive is 100 weight. Parts, the particles are 25 parts by weight. The particles include barium sulfate particles accounting for 10% of the total particle weight, with a particle size range of 3μm; titanium dioxide particles accounting for 10% of the total particle weight, with a particle size range of 1μm; nylon particles accounting for 80% of the total particle weight, with a particle size The range is 10μm. The thickness of the adhesive layer after drying is 6-8μm.

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Abstract

The invention relates to the technical field of optical thin films, in particular to an anti-scratching optical reflecting film and a manufacturing method of the same. The anti-scratching optical reflecting film and the manufacturing method of the same solve the problems that an existing reflecting film enables a light guide plate to be scratched easily or the reflecting film is creased or scratched easily. The reflecting film comprises a base material, wherein particles are arranged on the base material and are bonded on the base material through an adhesive layer, the particles comprise flexible particles and non-flexible particles, the flexible particles make up 40-100% of total weight of the particles, and the non-flexible particles make up 0-60% of the total weight of the particles. According to the anti-scratching optical reflecting film, scratching of the light guide plate is reduced obviously, and one side, in contact with the light guide plate, of the reflecting film is not creased or scratched easily. Furthermore, the anti-scratching optical reflecting film is simple in manufacturing method and technology, and easy to operate.

Description

technical field [0001] The invention relates to the technical field of optical thin films, in particular to an anti-scratch optical reflection film and a preparation method thereof. Background technique [0002] As one of the important components of liquid crystal display, the backlight module includes a series of components such as diffusion film, prism sheet, light guide plate, reflective film and lamp tube. Since the liquid crystal itself does not emit light, the backlight module plays a role in supplying sufficient brightness and a uniformly distributed planar light source. The reflective film here plays a role in reflecting the scattered light back to the light guide plate, and the reflection efficiency of the reflective film directly affects the utilization efficiency and brightness of the light source. [0003] In the backlight module, the reflective film is placed under the light guide plate. The material of the light guide plate is generally PMMA or PC sheet. The s...

Claims

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Application Information

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IPC IPC(8): G02B5/08G02B5/02G02B1/10
Inventor 张彦崔钧马子盈
Owner NINGBO EXCITON TECH
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