Composite fluorescent film, preparation method thereof, and application of film in laser display

A composite fluorescent and thin-film technology, applied in the field of optical materials, can solve the problems of increased cost and high price of multi-emission feedback systems, achieve excellent thermal stability and chemical stability, and promote the effect of integration

Active Publication Date: 2020-01-03
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although red, green and blue three-color lasers can achieve high-purity laser display, the current green laser equipment is not only expensive but also has a problem called "green defect", and the design of the multi-emission feedback system naturally increases the cost

Method used

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  • Composite fluorescent film, preparation method thereof, and application of film in laser display
  • Composite fluorescent film, preparation method thereof, and application of film in laser display
  • Composite fluorescent film, preparation method thereof, and application of film in laser display

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Embodiment 1

[0036] 0.3g CaAlSiN 3 -LiSi2 N 3 -Si 2 N 2 O phosphor (made of CaAlSiN 3 , Li Si 2 N 2 and Si 2 N 2 O was prepared by weighing and grinding at 1700°C for 12 h according to the molar ratio of 0.5:2:1) and 0.6 g of glass powder (Changzhou Wujin Xinghai Chemical Co., Ltd.) were uniformly ground in an agate mortar, and 1 mL of organic rubber was added [by Terpineol (Shanghai Aladdin Biochemical Co., Ltd., 95%), diethylene glycol butyl ether (Shanghai Aladdin Biochemical Co., Ltd., 98%), ethyl cellulose (Shanghai Aladdin Biochemical Co., Ltd. , 18-22mPa·s) according to the mass ratio of 1:1:1 and then stirred at 80°C for 8h to make] the required orange-red phosphor-glass powder mixed slurry was obtained after uniform mixing. Apply the orange-red fluorescent powder-glass powder mixed slurry evenly on the surface-coated transparent sapphire substrate (that is, the high thermal conductivity ceramic substrate, Zhejiang Crystal Optoelectronics Technology Co., Ltd., 10-30Wm -1 k...

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Abstract

The invention discloses a composite fluorescent film, a preparation method thereof, and an application of the film in laser display. The film comprises an orange red fluorescent film coating and a green fluorescent film coating which are arranged on a substrate. The preparation method of the film comprises the following steps: uniformly coating a high-thermal-conductivity ceramic matrix with an orange red phosphor-glass powder mixed slurry, heat-curing the mixed slurry to form the orange red fluorescent film coating, uniformly coating the orange red fluorescent film coating with a green phosphor-glass powder mixed slurry, and heat-curing the mixed slurry to form the green fluorescent film coating in order to obtain the composite fluorescent film. The composite fluorescent film can emit white light after the multicolor fluorescent film is excited by a blue light LD, and is applied to the field of laser display. The composite fluorescent film prepared by the method has excellent luminescence properties, can form wide-color-gamut color development on the basis of simplifying the structure of the white-light LD, and has great scientific research significance and commercial values.

Description

technical field [0001] The invention relates to the technical field of optical materials, in particular to a composite fluorescent film, its preparation method and the application of laser display. Background technique [0002] At present, the traditional display technology adopts a liquid crystal display (Liquid Crystal Display, LCD), and its core technology is that a backlight source adopts a light emitting diode (Light Emitting Diode, LED). Given the advantages of LEDs for energy saving and long lifespan, liquid crystal displays occupy a huge market in the market of daily necessities such as TVs, smartphones and computers. However, there are many problems with LEDs as backlights, such as large etendue, low brightness, and insufficient color purity, which greatly limit the use of display devices in high-brightness, wide-color-gamut display fields, such as theaters, projection equipment Wait. As we all know, laser diodes (LD) have been well used in the field of high-power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/89F21V9/30G03B21/20
CPCC04B41/52C04B41/89F21V9/30G03B21/204C04B41/4562C04B41/5022C04B41/4803C04B41/463
Inventor 王乐魏然冯小惠张宏
Owner CHINA JILIANG UNIV
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