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Optical coating composition, fluorescent optical membrane and preparation method thereof

An optical coating and composition technology, applied in the field of backlight display modules, can solve the problems of low market acceptance and high cost

Inactive Publication Date: 2013-11-27
GUANGDONG POLY OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high cost of using red, blue and green LEDs, the market acceptance of this technical route is extremely low

Method used

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  • Optical coating composition, fluorescent optical membrane and preparation method thereof
  • Optical coating composition, fluorescent optical membrane and preparation method thereof
  • Optical coating composition, fluorescent optical membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

reference example 1

[0038] Reference example 1: Synthesis of red fluorescent quantum dot material (chemical composition CdZnSeS / ZnS)

[0039] Add 24mmol of zinc acetate, 1.2mmol of selenium powder, 31ml of oleic acid and 30ml of hexadecane into a three-necked flask with a condenser and a thermometer, vacuumize at 150°C for 20min, fill with nitrogen, heat to 260°C, react for 2h, then drop oil Cadmium 1-octadecene solution, real-time monitoring product fluorescence emission peak wavelength by miniature optical fiber spectrometer (Ocean optics USB4000), when the desired light emission peak wavelength is reached (add 7.7ml of cadmium source dropwise at this time), then add dropwise according to The required amount of sulfur source is obtained by calculating the addition amount of the previous reactants, that is, continue to add 6ml of 1-octadecene solution with a concentration of 4mol / L 1-octylthiol dropwise, and control the dropwise completion within 6 minutes. The reaction was continued at 260 °C f...

reference example 2

[0040] Reference example 2: Synthesis of green fluorescent quantum dot material (chemical composition CdZnSeS / ZnS)

[0041] Add 8mmol of zinc acetate, 0.4mmol of selenium powder, 5.2ml of oleic acid and 15ml of 1-octadecene into a three-necked flask with a condenser tube and a thermometer, vacuumize at 120°C for 60min, fill with nitrogen, heat to 240°C, and then slowly drop Add the prepared 1-octadecene solution of cadmium oleate, and monitor the product fluorescence emission peak wavelength in real time through a micro fiber optic spectrometer (Ocean optics USB4000). Then dropwise add the required sulfur source calculated according to the amount of the previous reactant, that is, continue to drop 2ml of the sulfur source prepared in Example 5, and control it to drop in 40min, then add 1ml dodecanethiol dropwise, control it to drop in 20min. The reaction was continued for 120 minutes at 240°C. Cool to room temperature. Add toluene and stir evenly, add ethanol, centrifuge to ...

reference example 3

[0042] Reference example 3: Synthesis of red fluorescent quantum dot material (chemical composition InZnP / ZnS)

[0043] Add indium acetate (1mmol), hexadecanoic acid (3mmol), zinc acetate (8mmol), and 1-octadecene (20ml) into a dry and clean 50ml three-neck flask, vacuumize and change nitrogen for three rounds, and then Slowly raise the temperature to 220°C in the state, drop 0.8ml of 1.0M (TMS) 3P into the reaction system, keep it for 30mins, then raise the temperature to 260°C, and react for 2hours; slowly add 2.3ml of dodecanethiol dropwise into the above solution , kept at 260°C for 90mins, and cooled to room temperature under the protection of nitrogen. Divide the above-mentioned quantum dot solution cooled to room temperature into two 20ml centrifuge tubes, add about 2-3 times the volume of ethanol, stir until the turbid suspension appears, and centrifuge at 3500r / min for 3-5 minutes. Pour off the supernatant; centrifuge once again in the same way, pour off the supernat...

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Abstract

The invention provides an optical coating composition, a fluorescent optical membrane and a preparation method thereof. The optical coating composition comprises the following components in parts by weight: 0.01-3 parts of red fluorescence quantum dot material, 1-40 parts of green fluorescence quantum dot material, 0-90 parts of solvent, 0-20 parts of photodiffusion agent, 5-60 parts of film-forming material and 0-10 parts of film-forming assistant. The weight ratio of the red fluorescence quantum dot material to the green fluorescence quantum dot material is (1:100):(1:10). The optical coating composition provided by the invention can be applied on a transparent substrate or existing optical membrane surface to form a fluorescent optical membrane. The fluorescent optical membrane formed by the optical coating composition can achieve the effect of enhancing the displayable color range of the emergent light source.

Description

technical field [0001] The invention relates to the field of backlight display modules, in particular to a quantum dot optical coating composition and a fluorescent optical film prepared by using the optical coating composition. The optical film can be used to greatly broaden the range of existing liquid crystal displays. Gamut width. Background technique [0002] A liquid crystal display device is mainly composed of two parts: a liquid crystal panel and a backlight module. The liquid crystal panel itself does not emit light, but needs the light generated by the backlight module. Currently, there are mainly two types of light sources widely used in backlight modules: cold cathode fluorescent lamp (CCFL) and light emitting diode (light emitting diode, LED). Although the light emitted by cold cathode lamps has good color saturation, its color performance is usually better than that of ordinary white light emitting diodes. However, cold cathode lamps contain mercury, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/22C09D7/12G02B1/10G02B5/02B05D7/24B05D5/06
Inventor 李阳
Owner GUANGDONG POLY OPTOELECTRONICS
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