Reflective Display Panel with Aluminum Oxide Color Films
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Solution Overview
Problem
Existing reflection display technologies are limited in the range of colors that can be achieved, primarily using polyethylene terephthalate or glass substrates with pixel structures for red, green, and blue light, resulting in restricted color capabilities.
Innovation Solution
A display panel with an array substrate featuring a reflective layer and distributed reflective color films, including an aluminum oxide layer and a metal plasma nanostructure, allows light to be reflected and filtered to produce red, green, and blue colors by varying the thickness of the aluminum oxide layer, enabling a broader color spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional pixel structures with red, green, and blue filters are used on polyethylene terephthalate or glass substrates, then the display can achieve basic color output, but the range and purity of colors are greatly limited
Solution Approach 1:
The patent changes the physical parameter of the aluminum oxide layer thickness to control optical properties. By varying the thickness from 43nm to 96nm, different wavelengths of light are reflected, enabling red, green, and blue colors without traditional color filters. This parameter change approach expands the color range while maintaining purity.
Solution Approach 2:
The patent uses a composite structure combining aluminum oxide layer with metal plasma nanostructures. This composite material system creates optical interference effects that enhance color purity and enable broader color gamut compared to traditional single-material color filters.
2Illumination intensity
If the aluminum oxide layer thickness is varied to produce different colors, then full-color display with vivid colors is achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent establishes specific thickness ranges for different colors (red: 43-53nm, green: 90-96nm, blue: 80-86 nm) to balance color vividness with manufacturability. These optimized ranges provide sufficient tolerance for manufacturing while maintaining pure color output.
Solution Approach 2:
The patent uses optical interference principles where the aluminum oxide layer thickness directly determines the reflected color wavelength. By controlling thickness within specific ranges, the patent achieves vivid colors with practical manufacturing tolerances, as the interference effect is robust within these ranges.
3Adaptability or versatility
If metal plasma nanostructures are added to the aluminum oxide layer, then color purity and display effectiveness are improved, but the device complexity increases
Solution Approach 1:
The patent combines aluminum oxide layer with metal plasma nanostructures in a composite configuration. This composite approach enhances color purity through plasmonic resonance effects while the layered structure remains relatively simple to manufacture using sequential deposition processes.
Solution Approach 2:
The metal plasma nanostructures create a porous or nanostructured morphology that enhances light interaction. This nanostructuring increases display effectiveness by improving light absorption and reflection properties without requiring complex multi-layer structures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables full-color display with vivid and pure colors, improving light utilization and display effectiveness while maintaining a thin and cost-effective design.
Implementation Method 1
a reflective layer on a surface of the base substrate... configured to enable a light being reflected by the reflective layer
Implementation Method 2
The plurality of reflective color films are configured to enable a light being reflected by the reflective layer and then passing through one of the plurality of the reflective color films to have a color... by changing a thickness of the aluminum oxide layer
Implementation Method 3
a metal plasma nanostructure on a surface of the aluminum oxide layer opposite from the base substrate... The metal plasma nanostructure may be a gold plasma nanostructure
Data Source
AI summary
The present disclosure relates to display panels. The display panels may include an array substrate. The array substrate may include a base substrate, a reflective layer on a surface of the base substrate, and a plurality of reflective color films distributed at intervals in an array mode on a surface of the reflective layer opposite from the base substrate. The plurality of reflective color films may be configured to enable a light being reflected by the reflective layer and then passing through one of the plurality of the reflective color films to have a color.