Photonic crystal structure, method of manufacturing the photonic crystal structure, reflective color filter, and display apparatus employing the photonic crystal structure

Abstract

A photonic crystal structure includes a nano structure layer including a plurality of nano particles of various sizes, and a photonic crystal layer on the nano structure layer. The plurality of nano particles are spaced apart from each other. The photonic crystal layer has a non-planar surface, and is configured to reflect light of a particular wavelength.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of Korean Patent Application No. 11-2011-0092226, filed on Sep. 9, 2011, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.BACKGROUND[0002]1. Field[0003]Some example embodiments relate to photonic crystal structures, methods of manufacturing photonic crystal structures, reflective color filters and display apparatuses employing photonic crystal structures.[0004]2. Description of the Related Art[0005]Photonic crystal is a material having a crystal structure used to control light. A crystal structure in which a refractive index is repeated in a period results in occurrences of a constructive interference from light of a specific wavelength and a destructive interference from light of other wavelengths, thus forming a specific color. In this way, structural color technology that forms a color by reflecting and interfering light advantage...

AI Technical Summary

Benefits of technology

The patent text describes photonic crystal structures that can be used as color filters in display devices. These structures have a unique ability to reflect light of different wavelengths, making them ideal for creating high-quality color displays. The structures consist of a layered structure with a non-planar surface that can be easily manufactured. The technical effects of this patent include improved color filtering performance, reduced manufacturing costs, and improved display quality.

Problems solved by technology

A crystal structure in which a refractive index is repeated in a period results in occurrences of a constructive interference from light of a specific wavelength and a destructive interference from light of other wavelengths, thus forming a specific color.

One-dimensional photonic crystals have viewing angles of 5 or less degrees, and thus, applying one-dimensional photonic crystals to devices such as displays is difficult although one-dimensional photonic crystals have higher color formation and reflection characteristics.

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