Gate Driving Circuit Sharing Nodes for Same-Phase Scan Signals
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Solution Overview
Problem
Traditional gate driving circuits have complex circuit topologies that make it difficult to output multiple scan signals with the same phase, which is not conducive to the development needs of the display industry.
Innovation Solution
A gate driving circuit with cascaded modules, including a gate driving sub-module and an in-phase output sub-module, where the gate driving sub-module and in-phase output sub-module share a first output node and a pull-down node to output driving signals with the same phase, simplifying the circuit topology and enabling the output of multiple driving signals with the same phase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional gate driving unit is used to output two scan signals with the same phase, then the circuit topology becomes complex, but the ability to output same-phase signals is achieved
Solution Approach 1:
The patent combines the functions of generating same-phase scan signals into a single gate driving unit by merging the first and second scan signal output paths. The first scan signal output end and second scan signal output end are both connected to the same internal nodes (first node and second node), allowing both signals to be generated simultaneously with the same phase without requiring separate complex circuit topologies for each signal path.
Solution Approach 2:
The gate driving unit is designed with multi-functionality to output multiple scan signals (first scan signal and second scan signal) with the same phase through a single unified circuit structure. The internal nodes and transistor connections are configured to simultaneously generate and output multiple same-phase signals, making the circuit versatile rather than requiring dedicated complex paths for each signal.
2Reliability
If a complex circuit topology is used in the gate driving unit, then same-phase scan signals can be output, but the ease of manufacture and development is reduced
Solution Approach 1:
By merging the output paths of the first and second scan signals to share common internal nodes (first node connected to first node, second node connected to second node), the patent reduces the number of separate circuit components and connections required. This unified structure simplifies the manufacturing process and makes the circuit easier to implement while maintaining the same-phase signal output capability.
Solution Approach 2:
The gate driving unit employs a universal circuit structure that can simultaneously generate multiple same-phase scan signals through shared internal nodes and transistor configurations. This multi-functional design reduces the overall circuit complexity and makes the gate driving circuit easier to manufacture and integrate into display panels, while still achieving the required same-phase signal output function.
Data Source
AI summary
The present application discloses a gate driving circuit and a display panel. The gate driving circuit comprises a plurality of cascaded gate driving modules. A first driving signal can be output through a first output node, and at the same time, a second driving signal with a same phase as the first driving signal can be output through a second output node, and a gate driving sub-module and an in-phase output sub-module share the first output node and a pull-down node, which simplifies a circuit topology of the gate driving circuit.