Fabry-Perot cavity filter and method for dynamic color control

Abstract

The present invention provides a Fabry-Perot cavity filter for dynamic color control and a preparation method and a tuning method, which sequentially include a first metal thin film layer, a second non-conductive dielectric layer, a third A transparent conductive oxide layer, a fourth metal layer, and a fifth substrate layer; the second layer of non-conductive dielectric layer acts as a barrier layer to block the migration of metal ions after electrochemical metallization of materials with a dielectric constant that tends to 0 The third layer of transparent conductive oxide layer is a material with a dielectric constant close to 0, which can realize the change of the refractive index under the action of an electric field, thereby adjusting the refractive index of the Fabry-Perot cavity; the present invention is based on The ECM effect changes the effective refractive index of the ENZ material, thereby changing the resonance wavelength of the FP cavity, which can effectively solve the above problems, and can complete the memory of the resonance condition while removing the voltage.

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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