LCD Display Case Transparency Control for Product Shelf Life
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Solution Overview
Problem
Exposure to electromagnetic radiation, including visible and invisible wavelengths, causes degradation of products displayed in transparent cases, limiting their shelf life due to the inability to effectively shield them from radiation.
Innovation Solution
Incorporating a liquid crystal display (LCD) into display cases, which can be controlled to vary transparency and lighting levels based on time, ambient light, and consumer presence, ensuring products are shielded from radiation during non-use hours by switching to an opaque state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent housing is used for display cases, then product visibility is improved, but product shelf life deteriorates due to radiation exposure
Solution Approach 1:
The display case housing transitions from a static transparent state to a dynamic state that can switch between transparent and opaque. The LCD panel integrated into the housing allows real-time adjustment of transparency based on operational requirements, enabling the system to adapt between visibility and protection modes.
Solution Approach 2:
The LCD panel changes its optical properties from transparent to opaque, effectively altering the 'color' or light transmission characteristics of the housing. This allows the same housing structure to provide both visibility and radiation protection by controlling the light transmission state of the LCD panel.
2Illumination intensity
If LCD transparency is increased for better visibility, then product viewing is improved, but radiation exposure to products increases
Solution Approach 1:
The LCD transparency is made dynamic rather than fixed, allowing it to adjust based on operational context. During retail hours, the LCD maintains higher transparency for visibility, while during after-hours or non-use periods, it switches to opaque state to block radiation, thus resolving the contradiction between visibility and radiation protection.
Solution Approach 2:
The LCD transparency is adjusted periodically based on operational schedules - transparent during business hours when products need to be viewed, and opaque during after-hours when products need protection. This periodic switching resolves the contradiction by applying the appropriate transparency level at the appropriate time.
3Illumination intensity
If continuous lighting is provided for product visibility, then customer viewing is improved, but product degradation from radiation exposure increases
Solution Approach 1:
The lighting system switches from continuous operation to periodic operation, providing illumination only during retail hours when customers are present and products need to be viewed. During after-hours, lighting is turned off to eliminate radiation exposure, thus resolving the contradiction between visibility and product preservation.
Solution Approach 2:
The display case system automatically adjusts lighting and LCD transparency based on operational status and environmental conditions, eliminating the need for manual intervention. The system serves itself by detecting retail hours, ambient light levels, and automatically switching between visibility and protection modes.
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
Extends the shelf life of products by preventing radiation-induced degradation through controlled transparency and lighting management, particularly during after-hours or when the display case is not in use.
Implementation Method 1
replaces at least one side of a display case with a liquid crystal display (LCD)... the LCD can be used in a simple on/off manner, where the LCD is made transparent during open retail hours but is then made opaque during after-hours
Data Source
AI summary
A device and method for preventing damage to products in a display case is disclosed. The display case includes a normally black transparent liquid crystal display (LCD) which is positioned between a front and rear glass of the door. A controller is electrically connected to the LCD which drives the LCD according to transparency data. The transparency data comprises various transparency levels for the LCD depending on the time of day.