Fabry-Perot cavity filter for dynamic color regulation and control and methods

Abstract

The invention provides a Fabry-Perot cavity filter for dynamic color regulation and control and a preparation method and a tuning method. The Fabry-Perot cavity filter sequentially comprises a first metal film layer, a second non-conductive dielectric layer, a third transparent conductive oxide layer, a fourth metal layer and a fifth substrate layer from top to bottom, wherein the second non-conductive dielectric layer is used as a barrier layer to block metal ion migration after electrochemical metallization of a material with a dielectric constant tending to 0; the third transparent conductive oxide layer is made of a material with a dielectric constant tending to 0; and the refractive index can be changed under the action of an electric field, so that the refractive index of the Fabry-Perot cavity is adjusted. According to the invention, the effective refractive index of the ENZ material is changed based on the ECM effect, so that the resonance wavelength of the FP cavity is changed, the problem can be effectively solved, and the resonance condition can be memorized while the voltage is removed.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a Fabry-Perot cavity filter for dynamic color control, a preparation method and a tuning method thereof. Background technique [0002] In the field of display technology, we can use the plasma structure to produce different colors, but once the structure is determined, the colors it produces are also fixed. The plasmonic structure has the characteristics of thin structure, stability and high resolution in display technology. How to dynamically adjust the plasma color is the current research hotspot. Most of the ideas of dynamic adjustment are to change the plasma structure to adjust its intensity or wavelength. At present, the main control methods are mainly based on: direct electrochemical control, reversible electrochemical deposition, and polarization control. , The distance between two metals in a Fabry-Perot (FP) cavity can be controlled by pulling up an embedd...

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Problems solved by technology

[0004] However, most FP cavities choose to adjust the resonance wavelength by adjusting the length of the cavity. There are two main ways: the first is to prepare FP cavities with different cavity lengths, but this cannot achieve real dynamic adjustment. It is electrostatically adjusting the distance between two metal plates, but this kind of device is expensive and complicated to make, and the life of the mechanical device will decrease with the use of time

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