Scanning Drive Circuit for Variable Refresh Display Regions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies face high power consumption due to refreshing all display areas at a high refresh rate, even when both dynamic and static pictures are present, which is inefficient and wasteful.
Innovation Solution
A scanning drive circuit that divides the display area into sub-areas, applying different refresh rates to each based on the content, using multiple stages of scanning units and selection circuits to selectively control the refresh rate in each sub-area, allowing high refresh for dynamic areas and low refresh for static areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the entire display area is refreshed at a high refresh rate, then the dynamic picture quality is improved, but the power consumption increases
Solution Approach 1:
The display area is divided into multiple sub-areas, each independently controllable with different refresh rates. The scanning drive circuit includes multiple scanning units that can operate at different frequencies, allowing dynamic areas to receive high refresh rates while static areas receive low refresh rates, thereby reducing overall power consumption.
Solution Approach 2:
Different regions of the display are assigned different refresh rates based on their content characteristics. Dynamic content regions receive high refresh rates to maintain picture quality, while static content regions receive low refresh rates to save power. This localized differentiation resolves the contradiction between overall picture quality and power consumption.
2Use of energy by moving object
If the entire display area is refreshed at a low refresh rate, then the power consumption is reduced, but the dynamic picture quality deteriorates
Solution Approach 1:
By segmenting the display into multiple independently controllable sub-areas, the system can apply low refresh rates to static regions to save power while maintaining high refresh rates in dynamic regions to preserve picture quality, thus resolving the contradiction.
Solution Approach 2:
The scanning drive circuit enables different refresh rate characteristics in different spatial locations. Static areas operate at low refresh rates for power savings, while dynamic areas operate at high refresh rates for quality maintenance, achieving local optimization that resolves the global contradiction.
3Use of energy by moving object
If different refresh rates are applied to different sub-areas, then power consumption is optimized, but the device complexity increases
Solution Approach 1:
The scanning drive circuit is divided into multiple scanning units, each capable of independent operation. This segmentation allows flexible control of refresh rates in different sub-areas while distributing the complexity across modular units, making the overall system more manageable despite the increased functionality.
Data Source
AI summary
A scanning drive circuit includes a plurality of stages of first scanning units, a plurality of stages of second scanning units and a first selection circuit, where each stage of first scanning unit includes an output end, each stage of second scanning unit includes an input end and an output end. The first selection circuit includes a first input end, a second input end, and an output end, where the first input end is connected to an output end of any stage of first scanning unit, the second input end is connected to an output end of an (m−1)th stage of second scanning unit, and the output end is connected to an input end of an mth stage of second scanning unit.