GOA Circuit Structure on Flexible Substrate for Narrow Border Displays
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Solution Overview
Problem
The increasing resolution requirements in display technology lead to a larger routing area for Gate on Array (GOA) circuits, making it unsuitable for ultra-narrow border or borderless display panels, as the existing GOA technology occupies more space and is not efficient in reducing the non-active area.
Innovation Solution
A GOA circuit structure utilizing a flexible substrate with TFT layers on both sides and wires passing through holes to connect them, reducing the circuit area and allowing for a thinner substrate, thereby minimizing the border width of the non-active area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resolution of the display is increased, then the display quality is improved, but the routing area required by the GOA circuit increases, making it unsuitable for ultra-narrow border displays
Solution Approach 1:
The patent transitions from a conventional single-sided GOA circuit layout to a three-dimensional structure by placing GOA circuits on both the front and back sides of the substrate. This spatial dimensionality change allows the circuit routing to occur in multiple directions and layers, effectively reducing the routing area on any single plane and enabling ultra-narrow border displays while maintaining high resolution
2Device complexity
If the GOA circuit uses more routing area, then the circuit functionality is improved, but the non-active area of the display increases, preventing borderless display realization
Solution Approach 1:
The patent segments the GOA circuit into multiple independent units distributed across both front and back sides of the substrate. This segmentation allows the circuit functionality to be maintained through distributed architecture while reducing the concentration of routing area in any single region, thereby minimizing the non-active border area and enabling borderless display designs
Data Source
AI summary
The invention provides a structure of GOA circuit, which is manufactured on both sides of the ultra-thin flexible substrate with holes, wherein the wires pass through the holes to connect the TFTs in the GOA circuit on the front side to the TFTs in the GOA circuit on the back side to reduce the area occupied by GOA circuit. As such, the circuit area utilization is improved so that the same size of substrate area can carry almost twice the circuit structure to reduce the border width of the non-active area to achieve borderless or ultra-narrow border display panel with high resolution.