Display Substrate Test Electrode Layout for Cutting Efficiency
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Solution Overview
Problem
Current display substrate testing methods require additional space for test electrodes, which reduces cutting efficiency for small-sized products due to limited space, affecting the number of substrates that can be cut from a mother board and increasing production costs.
Innovation Solution
A display substrate design with a one-piece structure featuring test electrodes on both the body and to-be-cut portions, optimizing electrode arrangement to reduce space requirements and enhance cutting efficiency, where the to-be-cut portion is cut off during assembly, eliminating unnecessary electrodes that do not affect the display panel's normal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If test electrodes are arranged on the substrate, then testing function is achieved, but cutting efficiency deteriorates due to space occupation
Solution Approach 1:
The substrate is divided into a body portion and a to-be-cut portion. Test electrodes are arranged on both portions, allowing testing to be performed while the to-be-cut portion (containing unnecessary electrodes) is removed after testing, thus resolving the conflict between testing requirements and cutting efficiency
Solution Approach 2:
The unnecessary to-be-cut portion containing extra test electrodes is extracted and removed from the substrate after testing. This eliminates the space occupation problem while preserving the testing function, as the essential test electrodes on the body portion remain
2Reliability
If additional space is allocated for test electrodes, then testing capability is improved, but production cost increases due to reduced substrate utilization
Solution Approach 1:
By segmenting the substrate into body and to-be-cut portions, the design allows test electrodes to be placed on what would otherwise be waste material. This maintains substrate utilization rates while providing adequate space for testing capabilities
Solution Approach 2:
The to-be-cut portion is discarded after serving its temporary purpose of housing test electrodes during the testing phase. This allows the substrate area to be used for testing without permanently reducing the usable substrate area for final products
Data Source
AI summary
The embodiments of the present disclosure provide a display substrate, a display panel and a manufacturing method thereof. The display substrate includes a body portion and a to-be-cut portion arranged on at least one side of the body portion, and the body portion and the to-be-cut portion are in a same plane and connected to have a one-piece structure; the display substrate further includes a plurality of test electrodes, some test electrodes are arranged on the body portion, and the other test electrodes are arranged on the to-be-cut portion. The display panel includes the body portion in the display substrate.