Strain-Sensing Display Switching for Power Management
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Solution Overview
Problem
Existing display devices struggle to efficiently switch between display and non-display modes while maintaining low power consumption, especially in varying environmental conditions.
Innovation Solution
An information terminal incorporating a reflection-type liquid crystal element, an organic EL element, and a strain sensor, where the strain sensor controls the display mode by altering the light emission or reflection based on applied strain, utilizing a metal thin film resistor or piezoelectric element to sense strain and adjust the display accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light emission type element is used for display, then display quality in dark environments is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic switching between reflection-type and light emission type display modes based on environmental conditions and user interaction. The display element changes its operational state from light emission to reflection type depending on whether strain is applied, allowing optimal performance in different scenarios while managing power consumption efficiently
Solution Approach 2:
The patent changes the operational parameter of the display element from light emission mode to reflection mode by applying mechanical strain. This parameter change allows the display to adapt to different environmental conditions (bright vs. dark environments) while controlling power consumption through state transitions
2Use of energy by moving object
If a reflection-type element is used for display, then power consumption is reduced, but display quality in dark environments deteriorates
Solution Approach 1:
The patent makes the display element universal by enabling it to function in both reflection-type and light emission modes. This multi-functionality allows the same display element to perform optimally in both bright environments (reflection mode for low power consumption) and dark environments (light emission mode for high visibility)
3Adaptability or versatility
If display mode switching is implemented, then adaptability to different environments is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex electronic control systems with a simple mechanical strain-based switching mechanism. The strain sensor detects physical deformation to trigger mode switching, eliminating the need for complex environmental sensors, processors, and control algorithms while achieving adaptive display functionality
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
Enables efficient switching between display and non-display modes by strain, reducing power consumption and providing a novel, flexible display solution suitable for various environments.
Implementation Method 1
The strain sensor preferably includes a metal thin film resistor
Implementation Method 2
The strain sensor preferably includes a piezoelectric element
Implementation Method 3
an organic EL element
Implementation Method 4
a reflection-type liquid crystal element
Data Source
AI summary
An information terminal capable of switching display and non-display of images by strain. The information terminal includes a display portion and a strain sensor. The display portion includes a liquid crystal element, a light-emitting element, and a first and a second transistors. The strain sensor includes a strain sensor element and a resistor. The first transistor has a function of controlling current flowing into the light-emitting element. The strain sensor element has a function as a variable resistor. A first terminal of the strain sensor element is electrically connected to a first terminal of the resistor. A gate of the first transistor is electrically connected to a first terminal of the strain sensor element via the second transistor.