Scan Driving Circuit for Foldable Display Power Optimization
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Solution Overview
Problem
Conventional foldable display devices face challenges such as single display mode and high power consumption due to unnecessary energy usage when displaying by area.
Innovation Solution
A scan driving circuit comprising multiple scan units, control circuits, and switching circuits that are controlled by control signals to selectively connect scan lines to output terminals, allowing for independent control of scanning operations across different display areas, reducing power consumption by enabling display only where necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the entire display area is scanned continuously, then the display function is maintained, but power consumption increases
Solution Approach 1:
The display area is divided into multiple independent scanning regions, each with its own scan driving circuit. This allows selective activation of only the necessary display regions, reducing overall power consumption while maintaining display functionality in active areas.
Solution Approach 2:
The scanning operation is made dynamic and adaptive based on the folded state of the display device. The control circuit adjusts which scanning regions are active, transitioning between full-area scanning and partial-area scanning modes to optimize power consumption according to actual display needs.
2Adaptability or versatility
If the display device is folded, then portability is improved, but the display mode becomes limited
Solution Approach 1:
The scan driving circuit is designed to support multiple display modes (full display, partial display, folded display) through a single unified circuit architecture. The same circuit can adaptively configure different scanning regions based on the device's folded state, providing versatile display capabilities without requiring separate circuits for each mode.
3Use of energy by moving object
If multiple scan units are added to enable area-based display, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The display area is divided into multiple independent scanning regions, each with its own scan driving circuit. This allows selective activation of only the necessary display regions, reducing overall power consumption while maintaining display functionality in active areas.
Solution Approach 2:
Multiple scan driving circuits are integrated into a unified structure that shares common control signals and power supply lines. The first and second scan driving circuits are merged at the control level, allowing coordinated operation while reducing the number of independent control paths and simplifying the overall system architecture.
Data Source
AI summary
A scan driving circuit, a driving method, and a display device is provided. The scan driving circuit includes a first scan unit, a first scan line, a first control circuit, and a first switching circuit. The first scan unit includes a first output terminal configured to output a first scan signal. The first control circuit is connected to the first switching circuit, and the first control circuit is configured to control turn-on or turn-off of the first switching circuit under control of the first control signal. The first scan line is connected to the first output terminal through the first switching circuit, so that the first output terminal is electrically connected to the first scan line when the first switching circuit is turned on.