Display Panel Gate Line Length Difference for Array Detection
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Solution Overview
Problem
The half-source driving architecture in display panels makes it impossible to directly detect short circuits or open circuits in gate lines or reference voltage lines, leading to reduced production yield.
Innovation Solution
The display panel design includes gate lines and data lines arranged at right angles, with alternating rows of gate lines having different lengths, allowing for detection of faults by resistance differences during array detection, and specific connections and disconnections of gate lines and reference voltage lines for detection purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a half-source driving architecture is used to reduce the number of data lines and manufacturing cost, then manufacturing cost is reduced, but the ability to detect short circuits or open circuits in gate lines is lost
Solution Approach 1:
The patent applies preliminary action by configuring gate lines with different lengths (first length for odd rows, second length for even rows) before the detection process. This pre-configured length difference creates distinct resistance values that enable detection of short circuits and open circuits in the half-source driving architecture, resolving the contradiction between cost reduction and detection capability.
2Reliability
If gate lines in adjacent rows are configured with different lengths, then detection capability is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by making only the detection portions of gate lines different in length, while the functional portions connected to pixel rows remain uniform. Specifically, the first portion (connected to pixels) has equal length across all gate lines, while the second portion (for detection) has alternating lengths. This localized differentiation enables detection capability while minimizing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables effective detection of short circuits and open circuits, improving the production yield of display panels by distinguishing between gate lines in odd and even numbered rows based on resistance differences during array detection.
Implementation Method 1
any two of the gate lines arranged in adjacent rows are configured to present a predetermined length difference therebetween
Data Source
AI summary
A display panel. The display panel includes a pixel array, a plurality of gate lines arranged in rows, and a plurality of data lines arranged in columns. The gate lines and the data lines are configured to intersect each other at right angles, respectively; each row of pixels is correspondingly connected to two of the gate lines, and any two of the gate lines are parallel to each other; every two columns of subpixels are correspondingly connected to one of the data lines, and any two of the data lines are parallel to each other; and any two of the gate lines arranged in adjacent rows are configured to present a predetermined length difference therebetween. By setting a predetermined length difference, the array detection for display panel is realized to ensure the production yield of the display panel.