Emergent circularly polarized light vertical structure Micro-LED for 3D display, and preparation method thereof

A technology of circularly polarized light and vertical structure, applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of inconvenient viewing, and achieve the effects of good temperature stability, improved light extraction efficiency, and high luminous brightness
CN112018221AActive Publication Date: 2020-12-01诺视科技(苏州)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
诺视科技(苏州)有限公司
Publication Date
2020-12-01

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Abstract

The invention discloses an emergent circularly polarized light vertical structure micro-cavity Micro-LED for 3D display, and a preparation method thereof. According to the invention, the micro-cavityMicro-LED can emit circularly polarized light, and the circularly polarized light is adopted for 3D polarized display, so that the crosstalk problem of patterns caused by inclination of glasses can beeliminated only by setting the optical axis position of the circularly polarized glasses; the thickness of a chip is reduced, and a grating on a conductive layer and a dielectric film reflector on an-GaN layer are used as the end surface of a resonant cavity to form a resonant micro-cavity structure in the vertical direction, so that the light emission of the side wall is inhibited, and the light emission directivity of the front surface is improved; the resonant micro-cavity structure selects a specific wavelength, so that the luminescent spectrum is narrowed, the spectral purity is higher,and the threshold of Micro-LED display can be improved; the grating has polarization selection light emitting property, so that the emergent light passing through the structure is linearly polarizedlight; and a micro-nano structure is integrated at the top and is equivalent to a 1 / 4 wave plate, so that the linearly polarized light is converted into circularly polarized light.
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Description

technical field

[0001] The invention relates to the field of semiconductor technology, in particular to a Micro-LED with a vertical structure for emitting circularly polarized light facing 3D display and a preparation method thereof. Background technique

[0002] Micro-LED has important applications in display and visible light communication. The display industry is a leading industry in the information age, with an annual output value of more than 100 billion U.S. dollars. Light-emitting diodes (LEDs) have gradually become the mainstream in the field of display lighting due to their irreplaceable advantages of energy saving, high efficiency, durability, and mercury-free. Micro-LED is considered to be the most potential display technology after TFT-LCD and AMOLED technology due to its excellent characteristics such as ultra-high resolution, high brightness, ultra-power saving and fast response. Traditional two-dimensional display devices try to restore the real three-dimens...

Claims

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