GOA Circuit Substrate with Variable Dimension Units for Narrow Bezel
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Solution Overview
Problem
In display devices using Gate Driver on Array (GOA) technology, the design of gate driver circuits in the peripheral region of the array substrate faces challenges in accommodating GOA units due to uniform length and width constraints, which limits the ability to achieve a narrow bezel design.
Innovation Solution
The circuit substrate is designed with a rounded corner region and rectangular regions, where GOA units have varying lengths and widths, allowing for efficient arrangement and connection to gate lines without overlapping, thereby optimizing space usage and accommodating different GOA unit sizes in sub-regions to fit the curved shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform length and width constraints are applied to GOA units, then manufacturing simplicity is maintained, but space utilization efficiency deteriorates
Solution Approach 1:
The patent applies local quality by dividing the peripheral region into different sub-regions (rounded corner region, first rectangular region, second rectangular region) and allowing GOA units to have different lengths and widths in different sub-regions. This enables optimized space utilization in each specific area while maintaining manufacturing feasibility through localized variations rather than global changes.
Solution Approach 2:
The patent segments the GOA circuit into multiple independent GOA units with varying dimensions. Each GOA unit can be independently designed with appropriate length and width based on its location, allowing the circuit to adapt to the complex peripheral geometry while maintaining modular manufacturing processes.
2Area of moving object
If GOA units are arranged to fit the curved shape of the rounded corner region, then space utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent uses local quality to assign different dimensional characteristics to GOA units based on their specific location. Rounded corner region GOA units have different length-width relationships compared to rectangular region units, allowing each local area to be optimized independently without requiring complex global coordination.
Solution Approach 2:
The patent introduces dynamic dimensioning where GOA unit lengths and widths vary according to position within the peripheral region. This dynamic adaptation to spatial constraints allows the circuit to conform to curved geometries while maintaining systematic design rules that prevent excessive complexity.
3Adaptability or versatility
If the peripheral region is optimized for narrow bezel design, then display device functionality is improved, but wiring complexity increases
Solution Approach 1:
The patent segments the gate driver circuit into multiple discrete GOA units distributed across different sub-regions. This segmentation allows independent optimization of each unit's connections to gate lines, reducing overall wiring complexity while enabling narrow bezel design through efficient peripheral space utilization.
Data Source
AI summary
A circuit substrate has a first area and a second area. The second area includes a rounded corner region and a first rectangular region connected to the rounded corner region. The first rectangular region extends along a second direction. The circuit substrate includes: a plurality of gate lines disposed in the first area, and a gate driver on array (GOA) circuit disposed in the second area. The GOA circuit including at least one GOA unit disposed in the rounded corner region and a GOA unit disposed in the first rectangular region. Along the first direction, a length of a GOA unit in the rounded corner region is less than a length of the GOA unit in the first rectangular region; and along the second direction, a width of the GOA unit in the rounded corner region is greater than a width of the GOA unit in the first rectangular region.