Active Screen Protectors for Drop Impact Absorption
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Solution Overview
Problem
Portable electronic devices are prone to damage from drop events due to their fragile screens, which can be costly and impractical to repair.
Innovation Solution
The implementation of moveable screen protectors that extend above the screen upon detection of a drop event, acting as a shock absorber and preventing the screen from contacting a surface, utilizing sensors and actuators to move between retracted and extended positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the screen is made of glass and other fragile elements to achieve display quality, then the display performance is improved, but the screen becomes vulnerable to damage from drop events
Solution Approach 1:
The patent applies beforehand cushioning by positioning cushioning elements (such as foam or elastomeric materials) around the perimeter of the screen, specifically at corners and edges, before any drop event occurs. These elements are pre-installed in recesses or channels within the device housing, creating a protective barrier that absorbs impact forces during unexpected drops, thereby protecting the fragile glass screen while maintaining display quality.
Solution Approach 2:
The patent applies segmentation by dividing the protective structure into multiple discrete cushioning elements positioned at specific locations (corners and edges) rather than using a single continuous protective layer. This segmented approach allows targeted protection at high-risk impact zones while maintaining screen visibility and touch functionality across the entire display surface.
2Reliability
If screen protectors are extended above the screen to prevent contact with surfaces, then screen protection is improved, but the device complexity increases due to additional moving parts
Solution Approach 1:
The patent applies dynamics by implementing screen protectors that can change their position between retracted and extended states based on detected drop events. Sensors detect the drop, trigger actuators (such as motors or springs) to extend the screen protectors above the screen surface, and then retract them after the impact. This dynamic behavior provides protection only when needed, maintaining screen accessibility during normal use while reducing the need for permanently extended protective structures.
3Reliability
If multiple cushioning elements are positioned around the perimeter of the screen to absorb impact, then screen protection is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by positioning cushioning elements specifically at the corners and edges of the screen where impact forces are most likely to occur during drops. Rather than uniformly distributing protection across the entire screen perimeter, the cushioning elements are strategically placed at high-risk locations, providing targeted protection where it is most needed while minimizing the overall amount of protective material and structural complexity required.
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
Effectively protects the screen from damage by creating a gap between the device and the surface during a drop, reducing the risk of screen damage and simplifying the repair process.
Implementation Method 1
one or more sensors that detect when the electronic device experiences a drop event
Implementation Method 2
the screen protectors may move from the retracted to extended position, functioning as a shock absorber
Data Source
AI summary
An electronic device includes one or more screens, multiple screen protectors moveable between a retracted position and extended position where they extend above the screen to create a gap, and one or more sensors. When the sensor detects a drop event, the screen protectors move from the retracted to extended position, functioning as a shock absorber and preventing the screen from connecting with a surface that the electronic device contacts. In some implementations, the screen protectors may be multiple tabs that may be moved between the retracted and extended positions by one or more motors and/or other actuators coupled to one or more pinions. Such tabs may be formed of various flexible and/or rigid materials such as plastic, plastic film, polyethylene terephthalate or other polymers, metal, thin film metal, combinations thereof, and/or other such materials.