Gate Driving Circuit With First Suppression Module for Wake-Up Stability
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Solution Overview
Problem
Wearable display products experience jitter and horizontal stripes due to frequent wake-up actions and temperature variations, affecting display quality by destabilizing the potential of the pull-down node in the gate driving circuit.
Innovation Solution
The gate driving circuit incorporates a first suppression module to reduce leakage current between the pull-down node and level signal terminal, maintaining the potential of the pull-down node during the conversion phase and preventing horizontal stripes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequent wake-up actions are performed in wearable display products, then the display can be activated on demand, but jitter and horizontal stripes occur due to potential instability of the pull-down node
Solution Approach 1:
The first suppression module is configured to suppress the potential of the pull-down node before the wake-up phase begins. By pre-charging the pull-down node to a high potential level, the module prevents jitter and horizontal stripes from occurring during the subsequent wake-up operation, thereby maintaining display quality while enabling frequent wake-up actions.
Solution Approach 2:
The first pull-down node control module controls to charge the pull-down node to a high potential before the conversion phase starts. This preliminary charging action ensures that when the wake-up phase occurs, the pull-down node is already in a stable high-potential state, preventing display defects during the actual wake-up operation.
2Device complexity
If the pull-down node potential is not stabilized during conversion phase, then the circuit operation is simple, but horizontal stripes and jitter occur affecting display quality
Solution Approach 1:
The gate driving circuit is segmented into distinct functional modules: the first pull-down node control module responsible for charging the pull-down node, and the first suppression module responsible for maintaining its potential. This segmentation allows each module to perform its specific function efficiently, stabilizing the pull-down node potential during the conversion phase without requiring a complete redesign of the entire circuit.
3Use of energy by moving object
If the pull-down node potential drops during wake-up phase, then energy consumption is reduced, but jitter and horizontal stripes occur
Solution Approach 1:
The first suppression module operates periodically during the wake-up phase to maintain the pull-down node potential. By activating the suppression module at specific intervals or at critical moments during the wake-up sequence, the circuit ensures the pull-down node remains at high potential when needed, preventing display defects while managing energy consumption through controlled periodic operation rather than continuous operation.
Data Source
AI summary
The present disclosure provides a gate driving circuit, a display panel, a driving method and a display device. The gate driving circuit includes an input module, a pull-up node, an output module, a first pull-down node, a first pull-down node control module and a first suppression module. The first pull-down node control module controls to connect the first connection node and the first pull-down node under the control of the pull-up node, and inputs the signal provided by the second signal terminal to the first pull-down node under the control of the potential of the first pull-down node; the first suppression module inputs the signal provided by the first level signal terminal to the first connection node under the control of the pull-up node.