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Production equipment of diffusion film for small display

A technology of production equipment and diffusion film, which is applied in the field of production equipment of diffusion film for small displays, can solve the problems of low utilization rate of production workshop space, complex process, solvent odor, etc. degree, the effect of improving the diffusion performance

Pending Publication Date: 2021-12-31
安徽晟华光学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The production process of the existing diffusion film has the following defects: (1) the resin used in the production is generally a solvent-based thermosetting resin, and the solvent volatilizes during the drying process to produce peculiar smell, and there are serious environmental protection problems; (2) in the production process, The overall equipment length needs to be more than 20m, occupying a large area, and the space utilization rate of the production workshop is low; (3) the haze of the front light diffusion layer of the diffusion film product is more than 90%, and the haze of the back light diffusion layer is less than 15%, and the light The structure of the diffusion layer is in the form of solvent-based thermosetting resin plus astigmatism particles. The production process of astigmatism particles is relatively complicated and there will be adverse phenomena such as particle drop.

Method used

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  • Production equipment of diffusion film for small display

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] It should be noted that the unwinding mechanism, winding mechanism, soft film, soft film roller, UV curing equipment, etc. involved in the present invention are all commercially available products, and their specific working principles will not be repeated here. Those skilled in the art can choose equipment with corresponding functions according to actual production needs.

[0026] refer to figure 1 , a kind of diffusion film production equipment for small-sized display, comprises base material transmission mechanism, soft film transmission mechanism and UV curing equipment 6; Described base material transmission mechanism is used for carrying out the gluing of UV resin on the surface of base material 1, and It is sent to the position of the soft film transmission mechanism; specifically, the substrate 1 is a PET substrate, and the substrate transmission mechanism includes an unwinding mechanism 2 for the substrate, a coating mechanism for coating UV resin (not shown i...

Embodiment 2

[0028] The UV resin used in this scheme is a resin prepared by mass parts from the following components: 60 parts of acrylic resin oligomer, 30 parts of acrylic resin monomer, 4 parts of photoinitiator, 1 part of aluminum oxide, nano 0.5 parts of cubic boron nitride;

[0029] Among them: acrylic resin oligomer is composed of 57 parts of poly α,α'-[(1-methylethylene)bis-4,1-phenylene]bis[ω-[(2-acryloyl)oxy ]-polyethylene oxide and 10 parts of polyethylene glycol o-phenylene ether acrylate; the acrylic resin monomer is selected from 2-phenoxy ethyl acrylate; the photoinitiator is selected from (2,4,6 -trimethylbenzoyl)diphenylphosphine oxide.

[0030] Mix the above combinations to form a UV resin coating solution, which is coated on the surface of the substrate PET to form a hardened light diffusion layer with excellent formability, which has good scratch resistance and thermal conductivity, and makes the obtained diffusion The film has high scratch resistance. And the produc...

Embodiment 3

[0032] UV resin is a resin prepared by mass parts from the following components: 80 parts of acrylic resin oligomer, 10 parts of acrylic resin monomer, 1 part of photoinitiator, 2 parts of aluminum oxide, nano-sized cubic boron nitride 0.1 copies;

[0033] Among them: acrylic resin oligomer is composed of 57 parts of poly α,α'-[(1-methylethylene)bis-4,1-phenylene]bis[ω-[(2-acryloyl)oxy ]-polyethylene oxide and 10 parts of polyethylene glycol o-phenylene ether acrylate; the acrylic resin monomer is selected from 2-phenoxy ethyl acrylate; the photoinitiator is selected from (2,4,6 -trimethylbenzoyl)diphenylphosphine oxide.

[0034] Acrylic UV resin can form a hardened light-diffusing layer with excellent formability, and has good scratch resistance, making the resulting diffusion film highly scratch-resistant.

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Abstract

The invention discloses production equipment of a diffusion film for a small display. The production equipment comprises a base material transmission mechanism, a soft film transmission mechanism and UV curing equipment. The base material transmission mechanism is used for coating UV resin onto the surface of a base material. The soft film transmission mechanism comprises a soft film and a plurality of soft film rollers for driving the soft film to circularly rotate, and the soft film surrounds the soft film rollers to form a closed ring. The surface, facing the base material, of the soft film is provided with a microstructure, the soft film is rolled on the surface of the UV resin through the soft film rollers, and a diffusion layer corresponding to the surface microstructure of the soft film is formed on the surface of the base material. And the UV curing equipment is used for irradiating the UV resin to form the UV resin. The diffusion film production equipment provided by the invention adopts the UV curing equipment for molding and curing, and has the advantages of high curing speed, environment friendliness, no toxicity and the like. In addition, the equipment is small in total length, and the space utilization rate is increased. And the prepared diffusion film product has the advantages of scratch resistance, top whitening resistance, high shielding property, high brightness and the like.

Description

technical field [0001] The invention belongs to the technical field of optical thin films, and in particular relates to a production equipment for a diffusion film for a small display. Background technique [0002] Diffusion film mainly refers to the backlight light source part of the LCD module. In the backlight structure, it mainly plays the role of correcting the diffusion angle, which will increase the light radiation area and diffuse the light softly and evenly, but reduces the unit Light intensity of the area, i.e. reduced luminance. The basic structure of most diffusion films is to fix astigmatism particles on both sides of a transparent substrate such as a PET substrate with an adhesive such as resin to form a light diffusion layer. As the light passes through, many phenomena of refraction, reflection and scattering will occur to the light, thus causing the effect of optical diffusion. [0003] The production process of the existing diffusion film has the following...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/02B29C41/30B29C59/02B29C35/08B29C35/10G02B5/02B29L11/00
CPCB29C69/02B29C41/30B29C59/022B29C35/0805B29C35/10G02B5/0268B29C2059/023B29C2035/0827B29L2011/00
Inventor 具东孝崔珪雄
Owner 安徽晟华光学科技有限公司