Display Chip AOD State Switching Flicker Prevention
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Solution Overview
Problem
Electronic devices with AMOLED displays experience screen flickering when entering or exiting the Always On Display (AOD) function due to mismatches between the display interface and AOD instructions, leading to brightness attenuation and user dissatisfaction.
Innovation Solution
A method and device for controlling the screen of an electronic device, where a switching instruction is received to switch between AOD and non-AOD states, and the display chip determines whether the current display interface matches the instruction, ensuring accurate state switching to prevent flickering by matching the interface with the instruction before changing states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display chip switches between AOD and non-AOD states based on switching instructions, then the user can view information without activating the display interface, but screen flickering occurs due to mismatch between display interface and AOD instructions
Solution Approach 1:
The system performs preliminary matching verification between the display interface and switching instruction before executing the state switch. The display chip checks whether the current display interface is compatible with the received switching instruction, and only performs the AOD state transition when the interface matches the instruction type, preventing flickering caused by mismatches
Solution Approach 2:
The system implements a feedback mechanism where the display chip continuously monitors the match between display interfaces and switching instructions. When a mismatch is detected, the system provides feedback to prevent the state switch, thereby maintaining display stability and avoiding flickering issues
2Reliability
If the display interface is changed to match the switching instruction, then screen flickering is prevented, but the system complexity increases due to additional matching verification steps
Solution Approach 1:
The display chip performs self-verification by autonomously checking whether the current display interface matches the received switching instruction before executing state transitions. This self-service mechanism eliminates the need for external complex control logic, as the display chip independently determines whether to proceed with the state switch based on the match result
Data Source
AI summary
A method for controlling a screen of an electronic device includes the following. A switching instruction sent by an application layer is received. The switching instruction is configured to control a display chip to switch between an AOD state and a non-AOD state. In response to the switching instruction, it is determined whether a first display interface received from the application layer at a current moment matches the switching instruction. In response to determining that the first display interface matches the switching instruction, the display chip switches between the AOD state and the non-AOD state based on the switching instruction to display the first display interface.