Mother Substrate One-Way Conductive Circuits for Static Defect Testing
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Solution Overview
Problem
Current methods for testing mother substrates for defects caused by static electricity discharge are inefficient, as they cannot accurately locate which display panels are affected, leading to time-consuming and labor-intensive manual testing with potential for missed detection.
Innovation Solution
A mother substrate design incorporating multiple display panels, first and second test terminals, and one-way conductive circuits that allow signals to transmit only from the terminals to the signal lines, enabling efficient detection of defects by applying test signals and determining display situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual testing methods are used to detect defects caused by static electricity discharge, then testing can be performed, but testing efficiency is low and detection accuracy is poor
Solution Approach 1:
The invention divides the mother substrate into multiple independently testable regions by introducing first and second test terminals and one-way conductive circuits. Each display panel can be tested independently through signal injection at test terminals, allowing parallel testing of multiple panels simultaneously. This segmentation enables automated testing while maintaining precise defect localization to specific panels or even specific lines within panels.
2Loss of time
If traditional testing methods are used, then testing can be conducted, but time consumption is excessive and labor intensity is high
Solution Approach 1:
The invention incorporates test terminals and one-way conductive circuits into the mother substrate structure before cutting into individual display panels. This preliminary setup of testing infrastructure allows automated signal injection and defect detection to be performed on the entire mother substrate or selected regions before final product completion, dramatically reducing post-manufacturing testing time and labor requirements.
3Measurement precision
If no one-way conductive circuits are used, then the structure is simpler, but defect localization to specific display panels is not possible
Solution Approach 1:
The one-way conductive circuits act as intermediary elements between the test terminals and the signal lines of individual display panels. These circuits allow test signals to be injected in a controlled manner from test terminals to specific panels while preventing signal backflow or cross-contamination between adjacent panels. This intermediary structure enables precise defect localization to specific panels or lines without requiring complex external testing equipment or procedures.
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
This solution allows for the precise location of display panels with defects caused by static electricity discharge, enhancing testing efficiency and reducing undetected error rates.
Implementation Method 1
a plurality of first one-way conductive circuits, and each of the first one-way conductive circuits is electrically connected to one of the first signal lines outside the display area, and is configured to allow signals to be able to transmit only from the plurality of first test terminals to the plurality of first signal lines of each of the display panels
Data Source
AI summary
A mother substrate and a display panel are disclosed. The mother substrate includes a plurality of display panels, a plurality of first test terminals and a plurality of first one-way conductive circuits. Each of the display panels has a display area, and includes a plurality of first signal lines extending from outside of the display area to the display area in parallel; the plurality of first signal lines of each of the display panels are respectively electrically connected to one of the plurality of first test terminals; the plurality of first one-way conductive circuits are respectively electrically connected to the plurality of first signal lines outside the display area and are configured to allow signals to be able to transmit only from the plurality of first test terminals to the plurality of first signal lines of each of the display panels.