Mirror Substrate Phase Compensation for Display Optical Quality
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Solution Overview
Problem
Display devices with mirror patterns suffer from adverse optical and display quality issues due to the inclusion of reflective layers, which affect the phase difference of reflected lights and interfere with the display's reflective property.
Innovation Solution
A mirror substrate is designed with a transparent substrate, alternating first and second mirror patterns, where the first mirror layer is thicker and made of aluminum, the second mirror layer is thinner and made of silver, and a phase compensation layer, potentially including indium tin oxide, is used to match the phase difference of reflected lights, along with a color control layer and a barrier layer to enhance optical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If mirror patterns are inserted to realize mirror property, then reflective property is improved, but optical property and display quality are adversely affected
Solution Approach 1:
The patent applies local quality by creating different mirror patterns with varying thicknesses and materials in different regions of the display device. Specifically, the mirror substrate includes a first mirror layer and a second mirror layer with different thicknesses, where the first mirror layer has a greater thickness than the second mirror layer. This local variation in mirror structure allows different regions to have optimized reflective properties while maintaining overall display quality.
Solution Approach 2:
The patent implements parameter changes by varying the thickness and material composition of mirror layers across different regions. The first mirror layer and second mirror layer have different thickness parameters, and the mirror substrate may include additional layers such as a color control layer and barrier layer. These parameter modifications enable the system to achieve both desired reflective property and acceptable optical performance.
2Ease of manufacture
If mirror patterns with uniform thickness are used, then manufacturing is simplified, but phase difference of reflected lights cannot be compensated
Solution Approach 1:
The patent resolves this contradiction by applying local quality - different regions of the mirror substrate have different layer structures. The first mirror layer and second mirror layer are positioned at different locations with different thicknesses, allowing phase compensation in specific regions while maintaining a relatively simple overall manufacturing process. The color control layer and barrier layer are also selectively positioned to achieve phase compensation without requiring complete redesign of the entire mirror structure.
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 improves the reflective property and display quality of display devices by compensating the phase difference of reflected lights and optimizing the thickness and materials of the mirror layers, resulting in enhanced optical performance and reduced interference.
Implementation Method 1
a phase compensation layer, potentially including indium tin oxide, is used to match the phase difference of reflected lights
Implementation Method 2
layer structures or patterns (e.g., mirror patterns) having a reflective property may be inserted to the display device to realize the mirror property
Data Source
AI summary
A mirror substrate includes a transparent substrate, a plurality of first mirror patterns arranged on the transparent substrate and spaced apart from each other, each of the first mirror patterns including a phase compensation layer and a first mirror layer sequentially stacked on the transparent substrate, and a second mirror layer disposed on the transparent substrate and between neighboring ones of the first mirror patterns, the second mirror layer having a second thickness less than a first thickness of the first mirror layer.