Optical conversion luminous film and preparation method thereof

Abstract

The invention relates to an optical conversion luminous film and a preparation method thereof. The optical conversion luminous film is formed by a diffusion film and a mixed paint layer on the diffusion film; the optical conversion luminous film has the thickness of 30-200mum, wherein, the thickness of the diffusion film is 20-70mum; the mixed paint layer is made of 10.000-30.000% of yellow luminous fluorescent material, 0.001-2.000% of red luminous fluorescent material, 60.000-89.000% of polymer resin, 1.000-5.000% of bi-amino silane, 0.000-20.000% of diluting agent and 0.000-5.000% of accessory ingredient. By combining the yellow luminous fluorescent material and the red luminous fluorescent material, the invention can realize the aim of regulating chromaticity coordinate, color temperature and color rendering index, thus preparing the optical conversion luminous film which is made of the fluorescent materials and has the advantages of high color rendering index of the photodiffusioneffect, good property of uniform light, anti-dazzle, high light conversion efficiency, low cost, excellent aging characteristic and simple production technique.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic display and illumination. The invention relates to a light-converting luminescent film of a fluorescent material, in particular to a layered film product made of a luminescent material, a luminescent paint and a resin film. At the same time, it relates to a light-converting light-emitting film for light-emitting devices including LED backlight, digital display and lighting. Background technique [0002] International patent WO2007105853 introduces a method for preparing a photoluminescent film. The luminescent material used is an inorganic luminescent material. The photoluminescent film introduced in this patent is prepared using silicone resin as a film-forming material, but it does not affect the photoluminescent film. The relationship between the luminescent material of the luminescent film and the color coordinates, color temperature and brightness is introduced. Chinese patent applic...

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Problems solved by technology

Chinese patent application 200480006816.X "Light-emitting film, light-emitting device, manufacturing method of light-emitting film, and manufacturing method of light-emitting device", mainly coats a layer of water-soluble gel light-emitting body on the part of the light-emitting device to form a light-emitting film, and the material is special And it is only a single device coating, and there is no uniform light effect

Chinese patent application 200580016040.4 "Improved Color Conversion Photoluminescent Film", although it is mentioned that the blue laser emits visible light, it does not have a uniform light effect without the combination of diffusion materials, and at the same time, the manufacturing method of screen printing technology is difficult to achieve a large area of ​​luminescent materials uniformity, consistency

Chinese patent application 200610047459.2 "UV curable luminescent film and its manufacturing method" and Chinese patent ZL00119131.4 "luminescent film and its manufacturing method", described the photoluminescent material luminescent film and its manufacturing method, mainly proposed long afterglow luminescent film and its The manufacturing method does not mention the blue-light-excited LED light conversion material to manufacture the luminescent film, and does not propose the process method of combining the diffusion material to manufacture the luminescent film

U.S. Patent US660017581 mentions that organic fluorescent and phosphorescent materials are used in the packaging of white light LEDs to replace LED phosphors for packaging, and compositely emit white light. It is only the coating of a single device, which can only simply realize the electric light source, and has certain advantages in the application of surface light sources. Difficulty; Chinese patent application 200380105175.9 "Organic LED display device and its driving method" involves the application of organic fluorescent materials based on the principle of electroluminescence rather than light conversion, and the patented method is simple and not suitable for large-scale production applications; Chinese patent 00118424.5 "A "Organic Materials for White Light Diodes" mentions the combination of organic materials and blue light-emitting diodes for light conversion and single LED packaging, but there is only one material used for packaging alone; Method" mainly introduces the compounding of organic fluorescent material and long afterglow material into resin medium to make color long afterglow light emitting board, and the finished product cannot be used in LED products; Chinese patent 03138839.6 "An organic white light fluorescent light emitting material and its preparation method "It mentioned that organic materials are made into thin films and packaged in blue LEDs or green LEDs to obtain white LEDs with higher color rendering index, but it is still the preparation of LED point light sources, which is difficult in the application of surface light sources The method is melting and cooling to form a film, which is not suitable for large-scale industrial production; Chinese patent 200510030192.1 "White Light-Emitting Components and Its Manufacturing Method" involves inorganic phosphors, and organic fluorescent materials are mixed in resin and applied to LED chips to make white light-emitting devices. It is for the preparation of LED point light sources; the organic fluorescent material involved in the Chinese patent 93109130.6 "Electroluminescent Device" uses the principle of electroluminescence to make thin films, which is excited by voltage instead of blue light or ultraviolet light, and does not mention the principle of light conversion And the application of surface light source

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