AOD Display Position Shift to Prevent OLED Burn-in
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Solution Overview
Problem
Always-on-display (AOD) information on mobile terminals can cause burn-in on OLED displays due to static positioning, and frequent shifting of this information is inconvenient for users.
Innovation Solution
A display device and AOD control method that displays AOD information on a part of the screen in a second screen mode, with the position changed only when the screen mode is resumed after an event, rather than during active display, to prevent burn-in and user inconvenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If AOD information is displayed at a fixed position to save power, then power consumption is reduced, but the pixels at this position will burn in and degrade
Solution Approach 1:
The patent applies the dynamics principle by making the AOD display position changeable rather than fixed. The controller dynamically adjusts the display position of AOD information based on usage patterns and screen mode transitions, ensuring that no single set of pixels is continuously stressed. This dynamic repositioning prevents burn-in while maintaining the power-saving benefits of AOD mode.
2Reliability
If the display position of AOD information is shifted at preset time intervals to prevent burn-in, then pixel degradation is reduced, but the user notices the shifting which is inconvenient
Solution Approach 1:
The patent applies preliminary action by pre-planning the display position changes to occur during natural screen mode transitions (when switching between full-screen and AOD modes). Instead of arbitrarily shifting positions during AOD mode, the system prepares position changes in advance and executes them at opportune moments when the user is less likely to notice, thus preventing burn-in while maintaining user convenience.
Solution Approach 2:
The patent maintains continuity of useful action by ensuring that AOD information remains continuously displayed and accessible, just at different positions. The functionality of displaying time, date, and other AOD information is maintained without interruption, while the position changes are seamlessly integrated into normal screen transitions, preserving both pixel health and user experience.
3Loss of information
If AOD information is always displayed on the screen to provide continuous information, then user information access is improved, but the corresponding pixels will be severely degraded
Solution Approach 1:
The patent applies dynamics by implementing multiple display positions for AOD information and transitioning between them. The controller dynamically selects which position to display AOD content based on the current screen mode and usage context. This ensures continuous information availability while distributing the display stress across different pixel regions, preventing severe degradation at any single location.
Data Source
AI summary
A display device, an AOD control method for the same, and a mobile terminal using the same are provided. An event view is displayed on a display panel in a first screen mode, and preset information is displayed on the display panel in a second screen mode. A display position of the information in the second screen mode is changed when the second screen mode is resumed after the first screen mode is finished.