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Multi-layer packaged quantum dot LED structure

A technology of LED structure and quantum dots, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of energy loss, the inability to independently adjust the emission spectrum energy of quantum dots or phosphors in white LEDs, and reduce the luminous efficiency of white LEDs.

Inactive Publication Date: 2017-05-10
TIANJIN ZHONGHUAN QUANTUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the operation process of mixed dispensing is simple, it also has defects, such as the inability to adjust the spectral energy emitted by quantum dots or phosphors in white LEDs alone; and the blending of quantum dots and phosphors will cause repeated absorption of light energy and lead to energy loss; in addition, The contact between the colloid and the LED chip after blending will also cause the backscattered light energy to be absorbed by the LED chip, reducing the luminous efficiency of the white LED

Method used

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  • Multi-layer packaged quantum dot LED structure

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Embodiment 1

[0025] refer to Figure 1-4 , figure 1 It is an exploded perspective view of the quantum dot LED structure of the multilayer package of embodiment 1, figure 2 It is the front view of the quantum dot LED structure of the multilayer package of embodiment 1, image 3 It is the left view of the quantum dot LED structure of the multilayer package of embodiment 1, Figure 4 It is the top view of the quantum dot LED structure of the multilayer package of embodiment 1, Figure 5 It is the front view of the quantum dot LED structure of the multilayer package of embodiment 2, in order to show the structure better figure 1 The middle structure is in a transparent state. This embodiment provides a multi-layer packaged quantum dot white light LED structure, including a carrier 1 and a blue LED chip 2 disposed on the carrier 1. The LED blue chip 2 is mounted upright, inverted or vertical Installed on the carrier 1, in this embodiment, the carrier 1 has at least one inner cavity 3, the ...

Embodiment 2

[0028] This embodiment is basically the same as Embodiment 1, except that the LED blue light chip 2 is flip-chip mounted on the carrier 1, the encapsulation adhesive layer 4 is a silicone rubber layer, and the water and oxygen barrier film 7 is PMMA film, the thickness of the water and oxygen blocking film 7 is 10 μm, the thickness of the phosphor adhesive layer 5 is 3 mm, the mass fraction of the phosphor in the phosphor adhesive layer 5 is 50%, and the quantum dot adhesive layer 6 includes a red quantum dot layer I9 and a green quantum dot layer II10, the wavelength of the red quantum dots is between 600nm and 700nm, the wavelength of the green quantum dots is between 500nm and 555nm, and the thickness of the quantum dot layer 6 is 0.05 mm, the mass fraction of the quantum dot microspheres in the quantum dot glue layer 6 is 10%, and the thickness of the encapsulation glue layer 4 is 100 μm. There is also a transparent colloid layer 11 between the fluorescent powder glue layer ...

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Abstract

The present invention discloses a multi-layer packaged quantum dot LED structure. The structure comprises a carrier and an LED chip disposed on the carrier. A packaging rubber layer, a fluorescent powder rubber layer, a quantum dot rubber layer, and a water and oxygen barrier layer sequentially cover on LED chip. Firstly, fluorescent powder and quantum dots are divided into two layers, the fluorescent powder and the quantum dots are separated, so that the quantum dots and fluorescent powder absorb less light emitted by the quantum dots and the fluorescent powder; secondly, the packaging rubber layer is filled between the LED chip and the fluorescent powder rubber layer, so that less exciting light scattered toward the LED chip is absorbed by the LED chip, therefore, the luminous efficiency of the LED is improved; and the water and oxygen barrier layer is disposed outside the quantum dot rubber layer, so that the service life of the LED device is prolonged remarkably.

Description

technical field [0001] The invention relates to the technical field of display or lighting, in particular to a multilayer packaged quantum dot LED structure. Background technique [0002] The particle size of quantum dots (Quantum Dots) materials is generally between 1 and 10nm. Since electrons and holes are quantum-confined, the continuous energy band structure becomes a discrete energy level structure, so the luminescence spectrum is very narrow (20-30nm ), high chroma purity and wide color gamut, which can greatly exceed the color gamut range of NTSC (National Television Standards Committee) (>100%); at the same time, the light absorption loss through the color filter is small, and low power consumption display can be realized. Due to the quantum confinement effect, the same material only needs to change the particle size of quantum dots to achieve coverage of the entire visible spectrum. A variety of quantum dots of different sizes can be mixed according to a certain...

Claims

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Application Information

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IPC IPC(8): H01L33/52H01L33/50H01L33/56
CPCH01L33/52H01L33/501H01L33/56
Inventor 卢睿杨磊安娜马昊玥边盾
Owner TIANJIN ZHONGHUAN QUANTUM TECH CO LTD
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