Display Substrate Refresh Segmentation for Lower Screen Power
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Solution Overview
Problem
Existing display screens face high power consumption due to uniform refresh rates across different screen portions, which is inefficient and reduces standby time, especially in scenarios requiring varying refresh rates like high frame rate games and live webcasts.
Innovation Solution
A display substrate with separate pixel rows and drive lines for different refresh frequencies, allowing independent control of refresh rates in distinct display regions, reducing power consumption by optimizing refresh frequencies based on specific requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform refresh rate is applied to entire display screen, then display quality is maintained, but power consumption increases
Solution Approach 1:
The display screen is divided into multiple display regions (first display region, second display region, etc.), each capable of operating at different refresh rates. This segmentation allows the display to maintain high quality where needed while reducing power consumption in other areas by applying different refresh rate strategies.
Solution Approach 2:
Different display regions are assigned different refresh rates based on their specific requirements. High refresh rates are applied to regions requiring high quality (e.g., gaming areas), while lower refresh rates are applied to regions where quality requirements are lower, optimizing the balance between display quality and power consumption locally.
2Productivity
If high refresh rate is applied to entire display screen, then display performance is improved, but power consumption increases
Solution Approach 1:
The display system dynamically adjusts refresh rates of different display regions based on real-time requirements. The controller can switch between different refresh rate configurations (e.g., 60Hz, 90Hz, 120Hz) for different regions, allowing the display to adapt to varying performance needs while optimizing power consumption.
Solution Approach 2:
High refresh rates are applied only to specific display regions where performance is critical, rather than uniformly across the entire screen. This partial application of high refresh rates maintains necessary performance levels while significantly reducing overall power consumption compared to full-screen high refresh rate operation.
3Adaptability or versatility
If separate drive lines are used for different refresh frequencies, then refresh rate optimization is achieved, but device complexity increases
Solution Approach 1:
The drive lines and control circuits are designed with multi-functionality, capable of operating at multiple refresh rates (60Hz, 90Hz, 120Hz, etc.) and serving multiple display regions with different requirements. This universal design reduces the need for completely separate hardware for each refresh rate, thereby limiting the increase in device complexity while maintaining optimization capabilities.
4Use of energy by moving object
If different refresh frequencies are applied to different display regions, then power consumption is reduced, but control complexity increases
Solution Approach 1:
The control circuit receives feedback regarding display requirements and automatically adjusts refresh rates for different display regions accordingly. This feedback mechanism enables intelligent power management where the system can dynamically switch between different refresh rate configurations based on actual usage scenarios, reducing manual control complexity while optimizing power consumption.
Data Source
AI summary
This disclosure provides a display substrate, a display screen, and a display substrate driving method. The display substrate includes a first-category pixel row, a second-category pixel row, a first drive line, a second drive line and at least one category of data signal source; a first gate on array (GOA) circuit is used for providing a starting signal of a first frequency to the first-category pixel row; a second GOA circuit is used for providing a starting signal of a second frequency to the second-category pixel row; the at least one category of data signal source is used for supplying a data signal to data signal lines of the first-category pixel row and the second-category pixel row.