Segmented Scanning Control Circuit for Foldable Display Power
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Solution Overview
Problem
Current foldable display devices waste power and refresh time by scanning and charging sub-pixels that do not display images, leading to inefficiency and increased power consumption.
Innovation Solution
A scanning control circuit with 2Q initialization signal lines and Q scanning control sub-circuits, including gate and light-emitting scanning control units, that are individually controlled to turn on or off based on image display needs, reducing unnecessary scanning and charging in non-display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scanning control circuit scans all display areas including non-display areas, then all sub-pixels are charged and refreshed, but power consumption increases and refresh time is wasted
Solution Approach 1:
The display panel is divided into multiple display areas, and the scanning control circuit is segmented into corresponding scanning control sub-circuits for each display area. This allows independent control of each segment, enabling the circuit to activate only the scanning control sub-circuits for display areas that need to show images, thereby reducing power consumption while maintaining reliable refresh of displayed content.
Solution Approach 2:
The scanning control circuit dynamically adjusts its operation by selectively activating or deactivating scanning control sub-circuits based on real-time display needs. When a display area does not require image display, its corresponding scanning control sub-circuit is turned off, making the system adaptive and energy-efficient while ensuring reliable refresh only where needed.
2Reliability
If scanning control circuit scans all display areas including non-display areas, then all sub-pixels are charged and refreshed, but refresh time is wasted
Solution Approach 1:
The scanning control circuit is divided into multiple independent scanning control sub-circuits corresponding to different display areas. This segmentation enables parallel or selective operation of sub-circuits, allowing the system to refresh only the necessary display areas, thereby reducing total refresh time while maintaining completeness of displayed content.
Solution Approach 2:
The system dynamically configures which scanning control sub-circuits are active based on display requirements. By activating only the sub-circuits corresponding to display areas that need refreshing, the system minimizes refresh time waste while ensuring that all necessary display content is properly updated.
3Use of energy by moving object
If scanning control sub-circuits are independently controlled for each display area, then power consumption is reduced, but circuit complexity increases
Solution Approach 1:
The scanning control circuit is segmented into multiple scanning control sub-circuits, each corresponding to a display area. While this increases structural complexity, each sub-circuit is a standardized module that can be independently controlled, allowing the system to reduce power consumption by activating only necessary sub-circuits. The modular design makes the complexity manageable and scalable.
Solution Approach 2:
Different scanning control sub-circuits can be independently activated or deactivated based on local display requirements. This local quality approach allows the system to maintain simple operation for active areas while deactivating unused areas, balancing the increased circuit complexity with targeted energy efficiency.
Data Source
AI summary
A scanning control circuit configured to be applied to a display panel including Q display areas, includes: Q gate initization signal lines, Q light-emittig initialization signal lines and Q scanning control sub-circuits. Each scanning control sub-circuit corresponds to a display area. The scanning control sub-circuit includes a gate scanning control unit and a light-emitting scanning control unit. The gate scanning control unit is configured to be turned on under control of a gate initialization signal from a gate initialization signal from the gate initialization signal line. The light-emitting scanning control unit is configured to be turned on under control of a light-emitting initialization signal from a light-emitting initialization signal line coupled thereto, and to be turned off under control of another light-emitting initialization signal from the light-emitting initialization signal line.