GOA Circuit Signal Line Sharing for Display Aperture Ratio
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Solution Overview
Problem
As pixel resolutions increase and sizes become smaller, the layout space for Gate Driver on Array (GOA) circuits in display panels expands, leading to a decrease in aperture ratio and transmittance, particularly in narrow border designs where the GOA is integrated within the display region.
Innovation Solution
The implementation of a display panel design that reduces the total number of signal transmission lines by sharing at least one signal transmission line between two stages of GOA circuit units, allowing each to receive gate signals, thereby reducing the area occupied by signal transmission lines and increasing the aperture ratio and transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If GOA circuit units are integrated within the display region to achieve narrow borders, then border width is reduced, but aperture ratio and transmittance decrease
Solution Approach 1:
Multiple GOA circuit units share common signal transmission lines, merging their signal requirements into fewer dedicated lines. This reduces the total number of lines needed in the display region, thereby reducing the area occupied by routing and increasing the aperture ratio while maintaining narrow borders.
Solution Approach 2:
The signal transmission lines are designed to serve multiple GOA circuit units simultaneously, making them multi-functional. Each line can transmit signals to different GOA units, reducing the total number of lines required and freeing up space in the display region for larger aperture.
2Measurement precision
If more GOA circuit units are added to drive higher resolution displays, then display resolution is improved, but layout space for GOA circuits increases
Solution Approach 1:
Multiple GOA circuit units share common signal transmission lines, merging their signal requirements into fewer dedicated lines. This reduces the total number of lines needed in the display region, thereby reducing the area occupied by routing and increasing the aperture ratio while maintaining narrow borders.
Solution Approach 2:
The patent utilizes vertical stacking of GOA circuit units and shares signal lines across multiple rows, transitioning from a horizontal expansion approach to a vertical integration approach. This dimensional change allows more GOA units to be accommodated without proportionally increasing the horizontal layout space.
3Area of stationary object
If the number of signal transmission lines is reduced to increase aperture ratio, then transmittance is improved, but signal transmission reliability may deteriorate
Solution Approach 1:
The signal transmission lines are designed to serve multiple GOA circuit units simultaneously, making them multi-functional. Each line can transmit signals to different GOA units, reducing the total number of lines required and freeing up space in the display region for larger aperture.
Solution Approach 2:
The patent introduces bridge lines as intermediary connections between GOA circuit units and shared signal transmission lines. These bridge lines ensure reliable signal transmission by providing proper electrical connections while maintaining the shared line architecture that reduces overall line count and increases aperture ratio.
Data Source
AI summary
The present application discloses a display panel and a display device. The display panel includes a plurality of pixel unit groups. Each pixel unit group includes a first row of pixel units and a second row of pixel units, which are adjacently disposed. A first gate driver on array (GOA) circuit unit electrically connected to the first row of pixel units and a second GOA circuit unit electrically connected to the second row of pixel units are further disposed between the first row of pixel units and the second row of pixel units. The first GOA circuit unit and the second GOA circuit unit share at least one signal transmission line.