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Quantum dot aao curved film, quantum dot film lens, preparation method, quantum dot converted white light led, packaging method

A thin-film lens and quantum dot technology, which is applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of reduced light conversion efficiency, severe photoheating, and quantum dot thermal quenching, and achieves improved heat dissipation efficiency and simple packaging methods , The effect of simple process

Inactive Publication Date: 2019-04-26
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor temperature stability of quantum dot materials, and the serious photoheating during the photoconversion process of quantum dot materials, the self-absorption of quantum dots makes the temperature of quantum dots rise continuously. Thermal quenching occurs, on the other hand, the light conversion efficiency decreases, forming a vicious circle, which seriously affects the optical performance of the device

Method used

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  • Quantum dot aao curved film, quantum dot film lens, preparation method, quantum dot converted white light led, packaging method
  • Quantum dot aao curved film, quantum dot film lens, preparation method, quantum dot converted white light led, packaging method
  • Quantum dot aao curved film, quantum dot film lens, preparation method, quantum dot converted white light led, packaging method

Examples

Experimental program
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no. 1 example

[0046] see Figure 4 As shown, the present embodiment provides a quantum dot AAO curved film 100, which includes a curved or planar porous array anodized aluminum oxide film 110. The radius of curvature of the anodized aluminum oxide film 110 is equal to the radius of curvature of the inner surface of the lens 210, and the pores of the anodized aluminum oxide film 110 in the porous array are embedded with quantum dot nanocrystals 120 (quantum dot material). The porous array anodized aluminum film 110 in this embodiment is curved.

[0047] see Figure 1 to Figure 4 As shown, this embodiment also provides a method for preparing the above-mentioned quantum dot AAO curved film 100, which includes the following steps:

[0048] S101, such as figure 1 and figure 2 As shown, a porous array anodized aluminum oxide (AAO) thin film is grown on an Al substrate 130 with a curved outer surface, and the radius of curvature of the outer surface of the Al substrate 130 is equal to the ra...

no. 2 example

[0062] see Figure 7 As shown, this embodiment provides a quantum dot film lens 200 , which includes a cap-shaped lens 210 and a quantum dot AAO curved film 100 . The quantum dot AAO curved film 100 includes a curved porous array anodized aluminum oxide film 110. The radius of curvature of the porous array anodized aluminum oxide film 110 is equal to the radius of curvature of the inner surface of the lens 210. Quantum dots are embedded in the pores of the porous array anodized aluminum oxide film 110. Dot nanocrystal 120 ; quantum dot AAO curved surface film 100 is bonded to the inner surface of lens 210 through silica gel layer 220 .

[0063] see Figure 1 to Figure 7 Shown, the present embodiment also provides the preparation method of above-mentioned quantum dot film lens 200, and it comprises the following steps:

[0064] S201. Refer to figure 1 and figure 2 As shown, the porous array anodized aluminum film 110 is grown on the curved Al substrate 130 , and the radiu...

no. 3 example

[0072] see Figure 10As shown, the present embodiment provides a quantum dot conversion white light LED 300, which includes a lead frame 310, an LED blue light chip 320 located in the lead frame 310, phosphor glue located in the lead frame 310 and covering the LED blue light chip 320 layer 330, and the quantum dot film lens 200. The quantum dot film lens 200 includes a cap-shaped lens 210 and a quantum dot AAO curved film 100 . The quantum dot AAO curved film 100 includes a curved porous array anodized aluminum oxide film 110. The radius of curvature of the porous array anodized aluminum oxide film 110 is equal to the radius of curvature of the inner surface of the lens 210. Quantum dots are embedded in the pores of the porous array anodized aluminum oxide film 110. The dot nanocrystal 120 ; the quantum dot AAO curved film 100 is attached to the inner surface of the lens 210 through the silica gel layer 220 . The quantum dot film lens 200 covers the opening of the lead frame...

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Abstract

The invention, which relates to the white-light LED display and illumination field, relates to a quantum-dot AAO curved film and a preparation method thereof, a quantum-dot film lens and a preparation method thereof, a quantum-dot conversion white-light LED and a packaging method thereof. The quantum-dot AAO curved film comprises a curved or planar porous arrayed anodic aluminum-oxide film, wherein the curvature radius of the curved or planar porous arrayed anodic aluminum-oxide film is equal to the curvature radius of an inner surface of a lens; and quantum dot nanocrystals are embedded in pore channels of the porous arrayed anodic aluminum-oxide film. The quantum-dot AAO curved film enables quantum dots to be packaged inside the film; and the heat dissipation efficiency of the quantum dots is improved. Besides, the preparation method of the quantum-dot AAO curved film has a simple process and is used for preparing a curved film enabling quantum dots to be packaged inside the film. In addition, the quantum-dot film lens consists of a cap-shaped lens body and the quantum-dot AAO curved film in contact with the inner surface of the lens body. The quantum-dot film lens is used for packaging to form a quantum-dot conversion white-light LED.

Description

technical field [0001] The invention relates to the field of white light LED display and lighting, and in particular to a quantum dot AAO curved film, a quantum dot film lens, a preparation method, a quantum dot converted white light LED, and a packaging method. Background technique [0002] In recent years, quantum dot materials have been paid more and more attention. In particular, quantum dots have a series of unique optical properties such as adjustable spectrum with size, narrow luminous half-peak width, large Stokes shift, and high excitation efficiency. They are favored by the LED and LCD backlight industries. extensive attention. At present, commercial white LEDs for display lighting are obtained by using blue light chips to excite yellow phosphors for light mixing. Although high color rendering index Ra can be obtained by doping high color rendering phosphors, the emission spectrum is limited by the energy level structure of the material itself. Too wide, poor mono...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50H01L33/58H01L33/64
CPCH01L33/505H01L33/58H01L33/64H01L2933/0041
Inventor 陈全王闵陈青山夏杭
Owner WUHAN TEXTILE UNIV