Gate Drive Circuit for Frequency-Division Display Scanning
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Solution Overview
Problem
Existing display panels entering low-frequency mode through full-screen low-frequency display modules limit their usage scenarios.
Innovation Solution
A gate driving unit with first and second frequency division control lines and cascaded stages of gate driving circuits, each with a stage transmission module and output module, controls gate control signals using first and second frequency division control signals to enable frequency division display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If full-screen low-frequency display module is used to reduce power consumption, then power consumption is reduced, but usage scenarios are limited
Solution Approach 1:
The display screen is divided into multiple independent scanning regions, each controlled by separate gate driving circuits. Different regions can operate at different refresh frequencies simultaneously, allowing full-screen low-frequency display and partial high-frequency display areas to coexist, thus reducing overall power consumption while maintaining high refresh rates in specific usage scenarios
Solution Approach 2:
The gate driving circuit dynamically adjusts the refresh frequency of different scanning regions based on real-time needs. The circuit can switch between full-screen low-frequency mode and partial high-frequency mode, enabling adaptive frequency adjustment that expands usage scenarios while optimizing power consumption
2Use of energy by moving object
If frequency division display is implemented, then power consumption is reduced and usage scenarios are expanded, but gate driving circuit complexity increases
Solution Approach 1:
The gate driving circuit is segmented into multiple independent stages, each responsible for a specific scanning region. This modular segmentation allows complex frequency division control to be broken down into simpler, independent units that can be managed separately, reducing overall circuit complexity while enabling frequency division display functionality
Solution Approach 2:
Multiple scanning regions are nested within the overall display framework, with each region's gate driving circuit embedded within the larger system. This nesting allows hierarchical control where regional frequency adjustments are managed within the context of the full-screen display, simplifying the control architecture
Data Source
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AI summary
This application provides a gate driving unit and a display device, including a first frequency division control line, a second frequency division control line, and a plurality of gate driving circuits. An output module of each of the gate driving circuits is electrically connected to the first frequency division control line or the second frequency division control line, and is electrically connected a first node and a second node in the stage transmission module, so as to output a first frequency division control signal or a second frequency division control signal to a scanning output terminal of a current stage of the gate driving circuits based on signals from the first node and the second node.