GOA Circuit Simplified Structure for Narrow Display Frame
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Solution Overview
Problem
The complexity of existing Gate Driver on Array (GOA) circuit structures hinders layout design and makes it difficult to achieve a narrow border in display panels, increasing manufacturing risks and instability.
Innovation Solution
A simplified GOA circuit design comprising N-stage units with forward and reverse scan control modules, pull-up and pull-down modules, and function modules, connected in a specific configuration to manage node potentials and signals, allowing for a more compact and stable layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the GOA circuit uses a traditional structure, then the gate driving function is achieved, but the circuit structure becomes complicated and layout design becomes difficult
Solution Approach 1:
The GOA circuit is divided into multiple independent GOA units, each handling a specific gate line. Each unit contains segmented functional modules (scan signal generation module, transfer module, compensation module) that can be designed and laid out independently, reducing overall circuit complexity while maintaining driving function
Solution Approach 2:
The scan signal generation module is extracted and optimized as a separate functional block within each GOA unit. By taking out the complex signal generation logic and implementing it through simplified transistor switches and capacitors, the overall circuit structure is reduced while preserving the gate driving capability
2Adaptability or versatility
If the GOA circuit structure is complicated, then certain functions are achieved, but it is difficult to achieve a narrow border in display panels
Solution Approach 1:
The circuit layout transitions from a planar expansion to a compact arrangement by utilizing vertical stacking of functional modules within each GOA unit. The scan signal generation, transfer, and compensation modules are arranged in a compact configuration that reduces the horizontal border width while maintaining all necessary functions
Solution Approach 2:
Multiple functional modules (scan signal generation, transfer switch, compensation capacitor) are merged into a single integrated GOA unit structure. This consolidation reduces the overall circuit footprint and enables narrower borders while preserving all required gate driving functions
3Ease of operation
If the GOA circuit structure is complicated, then signal control is achieved, but layout design becomes difficult and manufacturing stability decreases
Solution Approach 1:
Each GOA unit is designed with localized functional modules that have standardized configurations. The scan signal generation module, transfer module, and compensation module each have optimized local layouts that can be repeatedly used across different units, simplifying overall layout design while maintaining signal control functionality
Solution Approach 2:
The circuit design uses standardized transistor sizes and capacitor values as fixed parameters across all GOA units. By establishing uniform parameter specifications for the scan signal generation and transfer modules, the layout design process is simplified while ensuring consistent signal control performance throughout the display panel
Data Source
AI summary
A GOA circuit and a display panel are provided. The GOA circuit includes N stage GOA units, and an n-th stage GOA unit comprises a forward scan control module, a reverse scan control module, a pull-up module, a pull-down module, and a function module, wherein 2<n<N−1, and n and N are positive integers. The GOA circuit and the display panel can achieve a narrow frame by simplifying a circuit structure, thereby reducing risks during manufacturing process and stability.