Gate Drive Module With Frequency-Divided Regional Refresh Control
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Solution Overview
Problem
OLED display panels are limited in use scenarios due to the inability to drive different areas with different refresh rates, as they typically output valid pulses stage by stage, resulting in a uniform refresh rate across the entire display area.
Innovation Solution
A gate driving module with a frequency division control line and cascaded gate driving circuits, incorporating a frequency division control unit to control the output of gate control signals, allowing for different refresh rates in various areas by controlling the light emitting conditions of sub-pixels in different frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a gate driving circuit outputs valid pulses stage by stage to sequentially turn on multiple rows of sub-pixels, then the gate driving circuit can control the light emitting conditions of sub-pixels, but the refresh rate of the entire display area is uniform and different areas cannot be driven with different refresh rates
Solution Approach 1:
The gate driving circuit is divided into multiple independent gate driving circuits, each capable of receiving frequency division control signals and generating gate control signals with different refresh rates. This segmentation allows different display areas to be driven independently with different refresh rates, resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
Different gate driving circuits are configured with different frequency division control signal inputs, enabling local areas of the display panel to have different refresh rates. This local quality approach allows specific regions to be optimized for different use cases while maintaining overall system functionality.
2Adaptability or versatility
If the gate driving module uses frequency division control to enable different refresh rates in different areas, then adaptability is improved, but the gate driving circuit structure becomes more complex
Solution Approach 1:
Each gate driving circuit is designed with multi-functionality to handle both standard operation and frequency division operation. The circuits can receive frequency division control signals and adjust their output accordingly, allowing a single circuit design to serve multiple purposes and reducing the need for additional specialized components.
Solution Approach 2:
The gate driving circuits incorporate dynamic control capabilities through frequency division control units that can adjust the refresh rate based on input signals. This dynamic adjustment allows the system to adapt to different display requirements in real-time without requiring physical reconfiguration of the circuit architecture.
Data Source
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AI summary
The present application provides a gate driving module and a display panel. The gate driving module includes a plurality of cascaded gate driving circuits and a frequency division control line electrically connected thereto (for transmitting a frequency division control signal). Each of the gate driving circuits includes a gate control unit for receiving a gate control signal generated by an upper stage of gate driving circuit, an output unit electrically connected to the gate control unit via a first node and a second node (for outputting the gate signal and transmitting it to a lower stage of gate driving circuit), and a frequency division control unit electrically connected between the gate control unit and the output unit (for controlling a signal from one of the first node and the second node according to the frequency division control signal) to realize a frequency division function.