Foldable Display AOD Switching for Dual-Screen Visibility
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Solution Overview
Problem
The always on display (AOD) function on outward foldable-screen mobile phones is limited to a single display area, causing inconvenience when the device is in a folded state, as users need to flip the device to view information like time and date, and current solutions fail to intelligently manage display across both screens.
Innovation Solution
An AOD method that intelligently switches the display between the main and back screens based on the device's posture and orientation changes, ensuring information is always accessible without unnecessary screen flipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If always on display is performed on the main screen only when the device is in the folded state, then power consumption is reduced by limiting the display area, but user convenience deteriorates when the main screen faces downward as users need to flip the device to view information
Solution Approach 1:
The patent implements dynamic AOD display that automatically adapts to device posture changes. The system monitors whether the device is folded or unfolded and whether the main screen faces upward or downward, then dynamically switches the AOD display between the main screen and back screen accordingly. This dynamic adaptation ensures information is always visible without requiring users to flip the device, while maintaining power efficiency by limiting AOD to appropriate display areas.
Solution Approach 2:
The patent utilizes the back screen as an additional display dimension for AOD functionality. When the main screen is not suitable for AOD display (e.g., facing downward), the system transitions the AOD interface to the back screen, effectively adding another display plane to the system. This dimensional transition solves the visibility problem without requiring the entire main screen to remain active, thus maintaining power efficiency.
2Use of energy by moving object
If the display area is limited to a partial area of the screen for always on display, then power consumption is reduced, but the display functionality deteriorates when the device is unfolded as the entire screen should be utilized
Solution Approach 1:
The patent implements dynamic display area adaptation based on device state. When the device is folded, AOD is limited to the main screen or back screen depending on orientation, conserving power. When the device is unfolded, the system dynamically expands the display area to utilize the entire screen for AOD, providing full display functionality. This dynamic adjustment resolves the contradiction between power savings and display versatility across different device states.
3Use of energy by moving object
If always on display is performed on a single display area, then power consumption is reduced, but intelligence deteriorates as the system cannot adapt to device posture changes
Solution Approach 1:
The patent implements a feedback mechanism that continuously monitors device posture (folded/unfolded state and main screen orientation) and automatically adjusts the AOD display configuration accordingly. The system receives feedback about device state changes and responds by switching between main screen and back screen for AOD display, or by adjusting the display area. This closed-loop feedback system provides intelligence and automation while maintaining power efficiency through selective AOD display.
Data Source
AI summary
An always on display (AOD) method and an electronic device. The electronic device includes a display. The display includes a main screen and a back screen, and the main screen and the back screen are two display areas of the same display. When the electronic device is folded, the main screen and the back screen are oriented in opposite directions. When the electronic device is unfolded, the main screen and the back screen are oriented in a same direction, and the display area is an entire display screen. The method includes: displaying an AOD interface on the main screen in response to a screen-off operation at a first time point; where before the first time point, the electronic device is in a folded state, the main screen faces upward, and the main screen is on and displays a first interface.