Pixel Structure with Multi-Angle Reflective Patterns
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Solution Overview
Problem
Conventional reflective displays face limitations in optimizing optical characteristics due to the limited diversity of uneven insulation layer structures, which restricts the ability to effectively reflect light towards various directions.
Innovation Solution
The proposed pixel structure incorporates a combination of reflective patterns with different inclined angles and a floating channel layer, allowing for the creation of diverse reflective surfaces that can reflect incident light in multiple directions, thereby enhancing the optical characteristics of reflective displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an insulation layer with a lumpy structure is used to reflect external light toward different directions, then the optical characteristics (e.g., view angle) are optimized, but the diversity of the uneven structure is limited
Solution Approach 1:
The reflective structure is divided into multiple discrete reflective patterns (first, second, and third reflective patterns) with different inclined angles. Each reflective pattern segment reflects light in a specific direction, and their combination provides diverse light reflection paths, overcoming the limitation of a single lumpy structure.
Solution Approach 2:
The patent introduces multiple reflective patterns at different inclined angles (different spatial dimensions) to reflect light toward various directions. This multi-dimensional approach enhances the diversity of light reflection compared to the conventional single-layer lumpy structure.
2Ease of manufacture
If a single lumpy insulation layer structure is used, then the manufacturing process is simple, but the optical characteristics cannot be effectively optimized
Solution Approach 1:
The reflective structure is segmented into multiple reflective patterns formed in different film layers (first, second, and third reflective patterns). This segmentation allows for optimized optical characteristics through multi-directional light reflection while maintaining manufacturing simplicity by forming these patterns sequentially in the same thin-film deposition process.
Solution Approach 2:
The reflective patterns are formed with inclined surfaces (curved or angled geometries) rather than flat surfaces. These inclined reflective patterns at different angles enable effective light reflection toward various directions, optimizing optical characteristics while being manufacturable through standard thin-film deposition techniques.
3Adaptability or versatility
If multiple reflective patterns with different inclined angles are stacked, then light can be reflected toward various directions, but the device complexity increases
Solution Approach 1:
Multiple reflective patterns with different inclined angles are merged into a single integrated structure where the first, second, and third reflective patterns are stacked in sequence. This combining approach achieves diverse light reflection capabilities while maintaining a compact, unified device structure rather than separate components.
Solution Approach 2:
The reflective patterns are nested within different film layers, with the first reflective pattern in a lower layer, the second reflective pattern in an intermediate layer, and the third reflective pattern in an upper layer. This nested arrangement provides multi-directional light reflection while maintaining a compact vertical structure, reducing horizontal space requirements.
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
This configuration optimizes the optical characteristics, such as view angle, by enabling light to be reflected towards various directions, improving the performance of reflective displays.
Implementation Method 1
the second reflective pattern and the third reflective pattern are stacked together, so as to define reflective surfaces that have different inclined angles and are inclined toward different directions. Through these reflective surfaces, the pixel structure is able to reflect the incident light toward various directions
Data Source
AI summary
A pixel structure including a substrate, an active device located on the substrate, a second reflective pattern, and a third reflective pattern is provided. The active device includes a gate, a channel, a source, and a drain. The source and the drain are connected to the channel and are separated from each other. The channel and the gate are stacked in a thickness direction. The second reflective pattern and the third reflective pattern are electrically connected to the drain of the active device. The second reflective pattern has second contact openings. The third reflective pattern is stacked on the second reflective pattern and covers the second contact openings of the second reflective pattern. The second reflective pattern is located between the third reflective pattern and the substrate. Moreover, other kinds of pixel structures are also provided.