Semiconductor Nanocrystals for Ambient Light Patterns
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Solution Overview
Problem
Current technologies fail to effectively enhance the display of patterns without requiring additional stimulation beyond ambient light, particularly in various applications such as signage, architectural structures, and consumer products.
Innovation Solution
The use of semiconductor nanocrystals disposed in a predetermined pattern that can generate light of specific wavelengths in response to ambient light, with optional additional stimulation means like backlighting or electrical excitation, to enhance the visibility and brightness of the pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If semiconductor nanocrystals are disposed in a predetermined pattern to generate light in response to ambient light, then the display of the pattern is enhanced without requiring additional stimulation, but the brightness and visibility of the pattern may be insufficient under certain lighting conditions
Solution Approach 1:
The semiconductor nanocrystals are configured to automatically absorb ambient light and generate light emission without requiring external stimulation devices. The nanocrystals self-regulate their light generation based on the ambient light conditions, eliminating the need for additional power sources or control mechanisms while maintaining pattern visibility.
Solution Approach 2:
The system allows for optional additional stimulation means (backlighting, electrical excitation) to be applied to the semiconductor nanocrystals, changing the excitation parameter from solely ambient light to enhanced stimulation sources, thereby increasing the brightness and visibility of the pattern when needed.
2Illumination intensity
If additional stimulation means are added to enhance brightness, then the visibility of the pattern is improved, but the device complexity and power requirements increase
Solution Approach 1:
The article is designed to function in multiple modes: it can operate passively using only ambient light to excite the semiconductor nanocrystals, or it can optionally utilize additional stimulation means (backlighting, electrical excitation) when enhanced brightness is required. This multi-functionality allows the same article to adapt to different visibility requirements without requiring separate devices for each mode.
3Use of energy by moving object
If semiconductor nanocrystals with high absorption are used, then the light generation efficiency is improved, but the cost and manufacturing complexity increase
Solution Approach 1:
The patent specifies optimal absorption parameter ranges (1-99%, preferably 10-90%, more preferably 10-50% or 50-90%) for the semiconductor nanocrystals. By defining these parameter ranges, the invention balances light generation efficiency with manufacturability, allowing selection of nanocrystal properties that achieve sufficient brightness while remaining practical for production.
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 approach allows for the display of patterns, including images, designs, and text, on a wide range of objects without additional stimulation, while additional excitation can further enhance brightness, offering improved visibility and aesthetic appeal.
Implementation Method 1
the semiconductor nanocrystals are capable of generating light of one or more predetermined wavelengths in response to ambient light
Data Source
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AI summary
An article comprising an array of semiconductor nanocrystals arranged in a predetermined pattern, wherein the semiconductor nanocrystals are capable of generating light of one or more predetermined wavelengths in response to ambient light. In one embodiment the semiconductor nanocrystals emit light of different predetermined wavelengths.