AMOLED Display Item Shifting to Reduce Image Sticking
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Solution Overview
Problem
Active Matrix Organic Light-Emitting Diode (AMOLED) displays experience an image sticking effect due to reduced pixel brightness over time, causing ghost images when displaying static images for extended periods, which inconveniences users.
Innovation Solution
A method and apparatus that shift display items by a predefined distance when the screen turns on after being off, utilizing a control unit to manage the display unit's on/off states and item positions, ensuring minimal visible shifts to prevent prolonged image sticking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a static image is displayed on AMOLED for an extended period, then the display can maintain a stable image, but the brightness of pixels decreases over time causing image sticking effect
Solution Approach 1:
The patent applies periodic action by shifting display items at regular intervals (e.g., every 5 minutes, 10 minutes, or 30 minutes) when the device is in idle state. This periodic repositioning prevents prolonged static display of the same pixels, thereby reducing image sticking effect while maintaining display stability during active use.
Solution Approach 2:
The patent introduces dynamics by making display items movable rather than fixed. Items are repositioned to different locations on the screen based on idle time thresholds, transforming the static display into a dynamic system that adapts to usage patterns to prevent pixel degradation.
2Object-affected harmful factors
If display items are frequently repositioned to prevent image sticking, then image sticking effect is reduced, but user may perceive the shifting as abnormal behavior
Solution Approach 1:
The patent applies preliminary anti-action by proactively shifting items before significant image sticking occurs. By detecting idle states and repositioning items in advance, the system prevents the harmful effect from becoming noticeable to users, rather than correcting it after users perceive abnormalities.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining item repositioning only during idle states when no user interaction is occurring. This continuous monitoring and selective repositioning ensures display stability during active use while preventing image sticking during idle periods, making the action imperceptible to users.
3Illumination intensity
If the screen remains on to maintain display quality, then image sticking occurs faster, but turning off the screen causes longer idle periods increasing image sticking risk
Solution Approach 1:
The patent implements feedback by continuously monitoring device state (idle vs. active) and using this information to control item repositioning. The system detects when the device enters idle state through sensor inputs or lack of user interaction, and automatically triggers item shifting based on predefined time thresholds, creating a closed-loop control system.
Solution Approach 2:
The patent applies self-service by enabling the display system to automatically manage its own image sticking prevention without user intervention. The system autonomously detects idle states, determines when repositioning is needed based on time thresholds, and executes item shifting, making the protection mechanism self-regulating.
Data Source
AI summary
A method and an apparatus for providing a Graphical User Interface (GUI) on an Active Matrix Organic Light-Emitting Diode (AMOLED) display of a device for reducing an image sticking effect are provided. The method includes displaying at least one item at an initial position on a screen of the display device, turning off the screen according to a predefined condition, receiving a display-on input command, and shifting the at least one item as much as a predefined distance from the initial position on the screen.