Optical diffusion film and preparation method thereof

A technology of optical diffusion and diffusion layer, used in optics, optical components, instruments, etc., can solve the problems of difficult to control particle distribution uniformity, poor resin adhesion, film curling, etc.
CN104459844AActive Publication Date: 2015-03-25SICHUAN DONGFANG INSULATING MATERIAL
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SICHUAN DONGFANG INSULATING MATERIAL
Publication Date
2015-03-25

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Abstract

The invention discloses an optical diffusion film. The optical diffusion film is characterized by being composed of a polyester film layer, diffusion layers and hardened layers, wherein the polyester film layer is located in the middle, the two sides of the polyester film layer are coated with the diffusion layers, and the diffusion layers on the two sides of the polyester film layer are coated with the hardened layers; the thickness of the optical diffusion film ranges from 63 microns to 345 microns; each diffusion layer is a coating formed in the mode that a diffusion layer coating composition composed of a silicon source, a silane coupling agent, A-101 thermoplastic acrylic resin, ethanol, water and diluted hydrochloric acid is dried and cured at the temperature of 60-80 DEG C; each hardened layer is a coating formed in the mode that a hardened layer coating composition composed of ultraviolet cured resin, reactive diluent, photoinitiator and a leveling agent is cured under ultraviolet irradiation. The optical diffusion film has balanced light transmittance, haze and light diffusion performance, maintains high rigidity and dimensional stability and can be widely applied to manufacturing of liquid crystal display devices, advertising lamp boxes, illumination lamps and other devices requiring light sources.
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Description

technical field

[0001] The invention belongs to optical films, and relates to an optical diffusion film and a preparation method thereof. The optical diffusion film of the present invention has balanced light transmittance, haze and light diffusion performance, while maintaining high hardness and dimensional stability, and is suitable for liquid crystal displays, advertising light boxes, lighting fixtures and other devices requiring light sources. Background technique

[0002] Optical diffusion film (referred to as diffusion film) is widely used in the manufacture of liquid crystal displays, advertising light boxes, lighting fixtures and other devices that require light sources. CCFL) or point light source (LED) is evenly converted into a surface light source to improve the brightness of the LCD panel. Increase the viewing angle, increase the softness of the light source, achieve the effect of optical diffusion, and also have the function of protecting the prism sheet. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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