Rollable Display Dust Detection and Locking During Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dust particles on the display surface of rollable display devices can cause damage when the device is rolled or unrolled, and during use with electronic pens, due to scratching or other mechanical stress.
Innovation Solution
A control module activates dust removal mechanisms, including piezoelectric strips or ultrasound haptic effect generation, to detect and remove dust particles by locking rolling mechanisms when the dust threshold is exceeded, ensuring the display surface is clean before allowing rolling operations to continue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If dust particles are present on the display surface, then the device can be rolled or unrolled, but the display surface may be scratched or damaged
Solution Approach 1:
The dust detection mechanism detects dust particles on the display surface before the rolling operation is initiated. If dust is detected, the system prevents the rolling operation from proceeding, thereby eliminating the risk of scratching or damaging the display surface while maintaining operational safety
2Reliability
If magnetic locks are engaged to prevent rolling when dust is detected, then display surface damage is prevented, but the rolling mechanism is locked and cannot operate
Solution Approach 1:
The system continuously monitors the display surface for dust particles using the dust detection mechanism. When dust is detected, magnetic locks are engaged to prevent rolling. After dust removal, the system re-detects the surface, and when clean, disengages the magnetic locks to restore rolling functionality. This feedback loop ensures protection only when necessary while maintaining operational flexibility
3Reliability
If dust removal mechanism is activated continuously, then display surface remains clean, but energy consumption increases
Solution Approach 1:
The dust removal mechanism is activated periodically based on dust detection results rather than continuously. The system detects dust, activates dust removal only when needed, then re-detects to confirm cleanliness before deactivating the mechanism. This periodic operation maintains display surface cleanliness while significantly reducing energy consumption compared to continuous operation
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
Prevents damage to the display surface by ensuring dust is removed before rolling or unrolling, maintaining the integrity of the device and user safety by engaging magnetic locks until the surface is clear of dust particles.
Implementation Method 1
a dust detection mechanism (215, 217) for detecting dust particles on the display surface (102)
Implementation Method 2
Dust removal mechanism may include piezoelectric strips
Implementation Method 3
an ultrasound haptic effect generation module
Implementation Method 4
the control module engages magnetic locks to lock the rolling mechanisms
Data Source
AI summary
In a method for dust removal in a rollable display device, a control module activates rolling mechanisms and a dust removal mechanism of the rollable display device. The control module determines a first amount of dust particles on a display surface of the rollable display device using data from a dust detection mechanisms. When the first amount of dust particles is determined to exceed a threshold, the control module engages magnetic locks to lock the rolling mechanisms, and the dust removal mechanism continues to remove the dust from the display surface. The control module determines a second amount of dust particles on the display surface. When the second amount of dust particles is determined to fall below the threshold, the control module disengages the magnetic locks to release the rolling mechanisms. Dust removal mechanism may include piezoelectric strips or an ultrasound haptic effect generation module.