Gate Driving Circuit Time-Divisional Control for Reduced Footprint
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Solution Overview
Problem
The gate driver on array (GOA) technology occupies a large footprint due to the complexity of the gate driving circuit when completely fabricated on the array substrate, leading to excessive substrate occupation.
Innovation Solution
A gate driving circuit with cascaded shift registers and control switches, where control switches connected to the same shift register are turned on and off time-divisionally to output drive signals to gate lines, reducing the number of shift registers needed and thus the circuit's footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the gate driving circuit is completely fabricated on the array substrate using GOA technology, then the cost is reduced, but the footprint of the substrate is excessively occupied
Solution Approach 1:
The gate driving circuit is segmented into multiple independent shift registers, where each shift register drives a specific group of gate lines. This segmentation allows for optimized resource allocation and reduced overall circuit footprint while maintaining full functionality on the array substrate.
Solution Approach 2:
Each shift register is designed to drive multiple gate lines through time-divisional control, making the shift register a multi-functional component. This universality reduces the total number of shift registers needed, thereby reducing the footprint while keeping the manufacturing cost low through integrated fabrication.
2Productivity
If more shift registers are used to drive all gate lines, then the driving capability is improved, but the circuit footprint increases
Solution Approach 1:
The control switches operate in a periodic time-divisional manner, where each switch is activated at specific time intervals to drive different gate lines. This periodic action allows a single shift register to sequentially drive multiple gate lines, improving driving capability without proportionally increasing the circuit footprint.
Solution Approach 2:
The control switches are dynamically controlled with different timing signals, allowing the same shift register output to be routed to different gate lines at different times. This dynamic time-divisional multiplexing enables one shift register to serve multiple gate lines, enhancing productivity while minimizing footprint.
Data Source
AI summary
The present disclosure discloses a gate driving circuit, a gate driving method, an array substrate and a display panel. The gate driving circuit includes a plurality of shift registers cascaded together to successively output a respective drive signal, and a plurality of control switches each configured for connection to a respective one of gate lines. Each of the plurality of shift registers is connected to at least two respective ones of the plurality of control switches to output the respective drive signal to the at least two control switches. The plurality of control switches are configured such that the control switches connected to the same shift register are turned on and off time-divisionally in response to a control signal, whereby the respective drive signal output by the shift register is coupled to the gate line corresponding to a turned-on one of the control switches.