Display Panel Insulating Pattern for Sealant Short Prevention
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Solution Overview
Problem
Display panels suffer from defects due to conductive foreign substances infiltrating the sealant composition, leading to electrical shorts between the common electrode and connection electrodes, which are not effectively addressed by existing technologies.
Innovation Solution
Incorporating an insulating pattern that covers the connection electrode, preventing direct contact with conductive foreign substances within the sealant, thereby protecting the scan driving circuit from defects without requiring additional manufacturing processes or costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the sealant composition is used to couple display substrates, then the substrates are effectively bonded, but conductive foreign substances infiltrate the sealant causing electrical shorts
Solution Approach 1:
An insulating pattern is introduced as an intermediary protective layer between the connection electrode and the sealant composition. This insulating pattern prevents conductive foreign substances in the sealant from directly contacting the electrode, thereby eliminating the electrical short circuit problem while preserving the bonding function of the sealant.
Solution Approach 2:
The insulating pattern is formed in advance on the connection electrode before the sealant composition is applied. This preliminary protective action prevents the harmful infiltration of conductive foreign substances before they can cause electrical shorts, addressing the reliability issue proactively rather than reactively.
2Reliability
If additional protective measures are added to prevent conductive foreign substance infiltration, then electrical reliability improves, but device complexity and manufacturing cost increase
Solution Approach 1:
The insulating pattern is formed using the existing insulating layer formation process already present in the display panel manufacturing workflow. By merging the protective function with an existing process step, the solution improves electrical reliability without adding significant structural complexity or manufacturing burden.
Solution Approach 2:
The insulating pattern serves multiple functions: it provides electrical insulation to prevent shorts from conductive foreign substances, and it can be integrated with existing insulating layers in the display structure. This multi-functionality approach enhances reliability without proportionally increasing device complexity.
Data Source
AI summary
A display substrate including a scan driving circuit, a scan line, and an insulating pattern. The scan driving circuit includes a connection electrode disposed on a plurality of insulating layers, a plurality of signal lines, and a stage circuit connected to the signal lines and overlaps a non-display area. The scan line overlaps a display area and is connected to the scan driving circuit. The insulating pattern is disposed on the insulating layers, covers the connection electrode, and makes contact with a sealant.