Foldable Display Burn-In Reduction via Folding Angle Adaptation
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Solution Overview
Problem
Foldable electronic devices experience burn-in issues when consistently displaying the same always-on display (AOD) screen in low-power mode, especially in the folded state, where it is difficult to move the AOD screen and reduce burn-in.
Innovation Solution
A method that determines if the display is in a low-power mode, identifies the content of the current AOD screen, detects the folding angle of the display, and generates a new screen by reorganizing the content based on the folding angle to reduce burn-in.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the AOD screen is consistently displayed in the low-power display mode, then power consumption is reduced, but burn-in phenomenon occurs on the display
Solution Approach 1:
The patent applies dynamics by making the AOD screen content changeable based on folding angle. The system transitions from a static always-on display to a dynamic display that adapts its content according to the device state, allowing different screens to be displayed in different folding angles to prevent burn-in while maintaining low-power operation
Solution Approach 2:
The patent changes the parameter of display content based on the folding angle parameter. When the folding angle changes, the system selects different AOD screen content from multiple prepared screens, thereby changing the display parameters to prevent consistent burning of the same pixels while maintaining energy efficiency
2Reliability
If the AOD screen is moved by a specified gap every specified period, then burn-in is reduced, but it is difficult to implement when the device is in a folded state
Solution Approach 1:
The patent applies local quality by treating different folding states differently. Instead of attempting to move the AOD screen uniformly in all states, the system displays different content for folded state versus flat state, making the burn-in prevention strategy adaptable to the specific constraints of each state
Solution Approach 2:
The system dynamically selects different AOD screen content based on the detected folding angle. In folded state, the system chooses from multiple prepared screens rather than attempting to move the same screen, making the implementation feasible and effective for the constrained folded configuration
3Reliability
If multiple AOD screens are prepared and switched based on folding angle, then burn-in is reduced, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-preparing multiple AOD screen contents before they are needed. The system stores multiple screens in advance and selects from them based on folding angle detection, avoiding the need for complex real-time generation or transformation of display content during operation
Solution Approach 2:
The system uses copies of AOD screen content rather than a single original screen. Multiple prepared screens are stored as copies, and the system selects appropriate copies based on folding angle, simplifying the complexity management by using predetermined variations rather than complex dynamic generation
Data Source
AI summary
Disclosed is a method for reducing degradation of a display of an electronic device, the method including: determining whether the display is in a low-power display mode for displaying an always on display (AOD) screen, identifying content of a first screen displayed on the display based on the display displaying the AOD screen, detecting a folding angle of the display, generating a second screen by reorganizing the first screen based on the folding angle, and displaying the second screen on the display.