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Wavelength conversion device and its preparation method, related light emitting device and projection system

A wavelength conversion device and phosphor technology are applied in the fields of wavelength conversion devices and their preparation, related light emitting devices and projection systems, and can solve the problem of high temperature of phosphor chips, poor heat dissipation performance of phosphor chips, and easy generation of thermal saturation effects, etc. problem, to achieve the effect of good heat dissipation performance

Active Publication Date: 2015-12-02
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat dissipation performance of the phosphor sheet encapsulated by silica gel or epoxy resin is not good, which makes the temperature of the phosphor sheet higher, which is prone to thermal saturation effect, thus affecting the luminous efficiency of the phosphor sheet

Method used

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  • Wavelength conversion device and its preparation method, related light emitting device and projection system
  • Wavelength conversion device and its preparation method, related light emitting device and projection system
  • Wavelength conversion device and its preparation method, related light emitting device and projection system

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preparation example Construction

[0050] With regard to the above-mentioned wavelength conversion device, the inventors of the present invention also proposed a method for preparing the above-mentioned wavelength conversion device. image 3 It is a schematic flow diagram of an embodiment of the method for preparing the wavelength conversion device of the present invention, such as image 3 As shown, the preparation method of the wavelength conversion device includes:

[0051] S11. Obtain phosphor powder.

[0052] The phosphors here can be yellow phosphors, red phosphors, green phosphors, etc., which can absorb excitation light and emit stimulated light.

[0053] S12. Acquiring a silane coupling agent.

[0054] Silane coupling agent is a kind of silane with organic functional groups. It has both reactive groups capable of chemically combining with inorganic materials and reactive groups chemically reacting with organic materials in its molecules. Silane coupling agent can undergo hydrolysis reaction in water...

Embodiment 2

[0069] Figure 4 It is a schematic flow chart of another embodiment of the method for preparing the wavelength conversion device of the present invention, such as Figure 4 As shown, the preparation method of the wavelength conversion device includes:

[0070] S21. Obtain phosphor powder.

[0071] For the description of step S21, please refer to the description of step S11.

[0072] S22. Obtain a silane coupling agent.

[0073] For the description of step S22, please refer to the description of step S12.

[0074] S23. Obtain an acidic or neutral aqueous solution.

[0075] For the description of step S23, please refer to the description of step S13.

[0076] S24. Obtain the substrate.

[0077] For the description of step S24, please refer to the description of step S14.

[0078] S25 , mixing the silane coupling agent, phosphor powder, and acidic or neutral aqueous solution to obtain a mixed solution of the silane coupling agent and phosphor powder.

[0079] S26, putting...

Embodiment 3

[0087] Figure 5 It is a schematic flow chart of another embodiment of the method for preparing the wavelength conversion device of the present invention, such as Figure 5 As shown, the preparation method of the wavelength conversion device includes:

[0088] S301. Obtain phosphor powder.

[0089] For the description of step S301, please refer to the description of step S21.

[0090] S302. Obtain a silane coupling agent.

[0091] For the description of step S302, please refer to the description of step S22.

[0092] S303. Obtain an acidic or neutral aqueous solution.

[0093] For the description of step S303, please refer to the description of step S23.

[0094] S304, obtaining the substrate.

[0095] For the description of step S304, please refer to the description of step S24.

[0096] S305, mixing the silane coupling agent with an acidic or neutral aqueous solution to obtain a hydrolyzed solution of the silane coupling agent;

[0097] S306. Mix the phosphor powder ...

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Abstract

The embodiment of the invention discloses a wavelength conversion device, a manufacturing method of the wavelength conversion device, a relevant light emitting device and a relevant projection system. The manufacturing method of the wavelength conversion device comprises the steps that fluorescent powder is obtained; silane coupling agents are obtained; acidic or neutral water solutions are obtained; a substrate is obtained; the fluorescent powder, the silane coupling agents, the acidic or neutral water solutions and the substrate are placed in a container together; the container stands still so that a fluorescent powder layer can be formed on the substrate; the container with the fluorescent powder layer deposited is heated and dried, and a fluorescent powder sheet is obtained. The heat radiation performance of the wavelength conversion device is better.

Description

technical field [0001] The present invention relates to the field of illumination and display technology, in particular to a wavelength conversion device and a preparation method thereof, a related light emitting device and a projection system. Background technique [0002] Phosphor powder is a material that can absorb excitation light and convert the excitation light into different wavelengths of stimulated light, where the excitation light can be ultraviolet light and visible light. Compared with laser and LED output light, phosphor powder output light has a higher color rendering index. Among them, the most commonly used phosphors are yellow phosphors, green phosphors, and red phosphors. [0003] In order to prevent the phosphor from being dampened or oxidized in the air, the phosphor is usually encapsulated into a phosphor sheet by using an organic adhesive, such as silica gel, epoxy resin, and the like. However, the heat dissipation performance of the phosphor sheet e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V9/10F21V29/87F21S2/00G03B21/20G03B21/14F21V9/40
CPCG02B5/20G03B21/20
Inventor 田梓峰许颜正邓燕青
Owner APPOTRONICS CORP LTD