Dual-Gate Display Panel Aperture Ratio and Short-Circuit Prevention
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Solution Overview
Problem
Conventional display panels face issues with reduced aperture ratio and increased probability of gate and common line short-circuiting due to the close proximity of these lines in the manufacturing process, leading to defects like dark or bright stripes and higher manufacturing costs.
Innovation Solution
The display panel design includes common lines positioned between adjacent gate lines, reducing their overlap and the number of common lines, thereby increasing the aperture ratio and minimizing the likelihood of short-circuits by arranging dual-gate pixel units with specific connections to data and gate lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If common lines are disposed close to gate lines to reduce the number of common lines, then the aperture ratio is improved, but the probability of short-circuiting between gate lines and common lines increases
Solution Approach 1:
The patent introduces a third dimension (vertical stacking) by forming the common line above the gate line in the thickness direction. This spatial separation in the vertical dimension allows the common line to be positioned close to gate lines horizontally (improving aperture ratio) while maintaining electrical isolation through the insulating layer, thus preventing short-circuits.
Solution Approach 2:
An insulating layer is introduced as an intermediary between the gate line and common line. This insulating layer acts as a barrier that prevents direct electrical contact between the two conductive lines, eliminating the short-circuit risk while allowing the lines to be disposed close to each other for maximizing aperture ratio.
2Ease of manufacture
If common lines are disposed close to gate lines, then manufacturing cost is reduced, but display quality deteriorates due to dark or bright stripes
Solution Approach 1:
By moving the common line to a different vertical level (above the gate line) rather than placing it horizontally adjacent, the patent eliminates the dark/bright stripe defects caused by overlapping projections while maintaining the cost benefits of reduced common line count and simplified manufacturing.
Data Source
AI summary
The present invention provides a display panel including a plurality of dual-gate pixel units connected to each other through data lines, gate lines and common lines. Each dual-gate pixel unit includes a first pixel and a second pixel respectively connected to a first gate line and a second gate line, and shares a common line and a data line. The first pixel and the second pixel are respectively disposed at two opposite sides of the common line, and they are also respectively disposed at two opposite sides of the first data line and the second gate line. The data lines transfer data signals into pixels, and the gate lines control the pixels to receive the data signals. The present invention raises an aperture ratio of each pixel of the display panel, and reduces the probability of the gate line and the common line being short-circuited.