GOA Circuit Segmentation for Narrow Border Displays
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Solution Overview
Problem
The existing gate-driver-on-array type display panels face a reduction in aperture ratio and transmission ratio when the GOA circuit is disposed in the display area, leading to a compromised display effect, especially in large-size and high-resolution screens with super narrow border designs.
Innovation Solution
The GOA unit set and GOA trace set are disposed in adjacent pixel rows, with electrical connections through signal traces, reducing the actual space height of the GOA circuit and improving the aperture ratio while maintaining a super narrow border design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the GOA circuit is disposed in the display area, then the border width is reduced, but the aperture ratio is reduced and transmission ratio becomes insufficient
Solution Approach 1:
The GOA circuit is segmented into GOA unit sets that are distributed across multiple adjacent pixel rows (first, second, and third pixel rows). Each GOA unit set includes multiple GOA units that are spatially separated and connected through signal traces, allowing the circuit functionality to be divided across different regions of the display area.
Solution Approach 2:
The GOA circuit extends in the row direction (horizontal dimension) rather than being concentrated in a single column region. By distributing GOA unit sets across multiple adjacent pixel rows and connecting them through signal traces that extend horizontally, the circuit occupies a more distributed spatial arrangement that reduces vertical space requirements.
2Length of stationary object
If the GOA circuit is disposed in the display area, then the border width is reduced, but the transmission ratio becomes seriously insufficient
Solution Approach 1:
The GOA circuit is divided into multiple GOA unit sets distributed across different pixel rows, with each unit set containing multiple GOA units. This segmentation allows the signal transmission path to be distributed across multiple parallel routes through the pixel rows, improving overall transmission reliability.
Solution Approach 2:
Multiple GOA units within each GOA unit set are electrically connected in parallel through signal traces, combining their output signals. This merging of multiple signal paths ensures that the display signal transmission is maintained even if individual units experience variations, improving transmission ratio and reliability.
3Measurement precision
If the resolution is increased and pixel size is reduced, then the display quality is improved, but the GOA layout space increases requiring wider bus lines
Solution Approach 1:
The GOA circuit is segmented into multiple distributed unit sets across adjacent pixel rows, allowing the use of narrower signal traces instead of wide bus lines. Each GOA unit can be connected to nearby pixel units through short, narrow traces, eliminating the need for wide GOA bus lines that would be required for centralized GOA circuits in high-resolution displays.
Solution Approach 2:
The GOA circuit layout transitions from a centralized arrangement requiring wide horizontal bus lines to a distributed arrangement across multiple rows. By extending the circuit in the row direction and using vertical signal traces to connect GOA units to pixel units, the design eliminates the need for wide bus lines while maintaining signal integrity in high-resolution displays.
Data Source
AI summary
A gate-driver-on-array type display panel having a display area includes a plurality of pixel units and a GOA circuit, wherein the pixel units and the GOA circuit are disposed in the display area. The GOA unit set and the GOA trace set are respectively disposed in the pixel units that are in two adjacent rows, and the GOA trace set is electrically connected to two ends of the GOA unit set through a plurality of first signal connecting traces.