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Optical diffusion film and production process thereof

A technology of light diffusing film and production process, applied in optics, optical components, instruments, etc., can solve the problems such as the qualification rate and production capacity of light diffusing film to be improved, and achieve the effect of avoiding particle sedimentation, excellent anti-stick performance, and avoiding sedimentation.

Active Publication Date: 2014-03-26
昆山倬跃蓝天电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the qualified rate and production capacity of light diffusion film need to be improved

Method used

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  • Optical diffusion film and production process thereof
  • Optical diffusion film and production process thereof
  • Optical diffusion film and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 30 parts by mass of diffusion particles with a particle diameter of 40 microns, 30 parts by mass of resin and 40 parts by mass of solvent into the pneumatic stirring tank, stir and disperse evenly. Then filter the dispersed dispersion liquid into a clean bucket through a 300-mesh filter bag.

[0040] Move the barrel to the side of the coating equipment, add a stirring device on the barrel, and start the stirring device to maintain a slow speed. The stirring speed does not need to be high, it is enough to ensure that the diffusion liquid has a stable rotation effect, so as to avoid the settlement of the diffusion particles due to the long-term standing of the diffusion liquid.

[0041] Spoon the spread from the bucket to the trough and start the machine to start coating. The running speed of the machine is 30 m / min, the setting temperature of the oven is 120 degrees Celsius, and the length of the oven is 20 meters. The diffusion liquid collected from the reflux of ...

Embodiment 2

[0048] Add 20 parts by mass of diffusion particles with a particle diameter of 25 microns, 25 parts by mass of resin and 55 parts by mass of solvent into the pneumatic stirring tank, stir and disperse evenly. Then filter the dispersed dispersion liquid into a clean bucket through a 300-mesh filter bag.

[0049] Move the barrel to the side of the coating equipment, add a stirring device on the barrel, and start the stirring device to maintain a slow speed. The stirring speed does not need to be high, it is enough to ensure that the diffusion liquid has a stable rotation effect, so as to avoid the settlement of the diffusion particles due to the long-term standing of the diffusion liquid.

[0050] Spoon the spread from the bucket to the trough and start the machine to start coating. The running speed of the machine is 30 m / min, the setting temperature of the oven is 120 degrees Celsius, and the length of the oven is 20 meters. The diffusion liquid collected from the reflux of ...

Embodiment 3

[0058] Add 15 parts by mass of diffusion particles with a particle diameter of 15 microns, 25 parts by mass of resin and 60 parts by mass of solvent into the pneumatic stirring tank, stir and disperse evenly. Then filter the dispersed dispersion liquid into a clean bucket through a 300-mesh filter bag.

[0059] Move the barrel to the side of the coating equipment, add a stirring device on the barrel, and start the stirring device to maintain a slow speed. Spoon the spread from the bucket to the trough and start the machine to start coating. The running speed of the machine is 30 m / min, the setting temperature of the oven is 120 degrees Celsius, and the length of the oven is 20 meters. The diffusion liquid collected from the reflux of the feed tank can be used again.

[0060] After winding, place the mother roll coated with diffusion layer in a curing room at 60 degrees Celsius for 48 hours.

[0061] Add 8 parts by mass of anti-adhesive particles with a particle size of 10 m...

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Abstract

The invention belongs to the field of production of optical diffusion films and particularly relates to an optical diffusion film and a production process thereof. The production process includes the steps of producing diffusion liquid, stirring, moving the diffusion liquid to a trough of a coating machine, allowing the trough to feed from the ends and discharge from the middle, and coating one face of a base film with an optical diffusion layer; producing anti-sticking liquid and mixing, moving the anti-sticking liquid to the trough of the coating machine, allowing the trough to feed from the ends and discharge from the middle, and coating the other face of the base film with an antistatic layer. The optical diffusion film produced by the production process has high light transmittance and haze value; the optical coatings can well attach to base material; light permeating the diffusion film is soft and even; the optical diffusion film also has excellent anti-sticking property. A stirrer is disposed in each of containers of diffusion liquid and anti-sticking liquid, the diffusion liquid and the anti-sticking liquid are rotated, and diffusing particles and anti-sticking particles are avoided settling; a reflow device is provided, the trough feeds from the ends and discharges from the middle, liquid cycling is ensured, particle settlement is avoided, and yield of the optical diffusion field is increased.

Description

[0001] technical field [0002] The invention belongs to the field of light-diffusing film production, in particular to a light-diffusing film and a production process thereof, which are mainly used in electronic products such as televisions, computers, mobile phones, and tablets that use backlight components as display light sources. [0003] Background technique [0004] The light diffusion film is used to diffuse the light of the point light source and the line light source, and adjust the exit angle of the light, so that the light passing through the diffusion film is uniform and soft, and the viewing angle is increased. For a long time, the most important thing in the production technology of diffusion membrane is the production process, and the process setting plays an important role in the appearance of the product and the production pass rate of the product. At present, the qualified rate and production capacity of light-diffusing films need to be improved. [0005...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02B1/10C09D7/12G02B1/18
Inventor 唐春峰张鹏徐涛董青山高小君金晓龙徐海燕
Owner 昆山倬跃蓝天电子科技有限公司
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