Display Panel Metal Trace Corrosion for Short Circuit Prevention
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Solution Overview
Problem
Exposed metal traces on liquid crystal display (LCD) panels can lead to short circuits when contacting external grounded terminals, affecting the display effect.
Innovation Solution
A manufacturing method for a display panel involves forming a display motherboard with metal traces, cutting it to expose the traces, and then corroding the exposed metal traces using a concentrated acid solution to form an insulating metal salt structure, thereby preventing electrical conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the display motherboard is cut to separate display panels, then individual display panels are obtained, but metal traces are exposed and may cause short circuits
Solution Approach 1:
The harmful metal trace is extracted from the conductive state by chemically removing the metal material through acid corrosion, converting it into an insulating metal salt layer. This extraction of the harmful conductive property while preserving the trace structure prevents short circuits between adjacent display panels.
Solution Approach 2:
The originally harmful metal trace that causes short circuits is transformed into a beneficial insulating metal salt layer. The acid corrosion process converts the conductive metal into an insulating compound, turning the harmful exposed trace into a protective insulating barrier that prevents electrical shorts while maintaining the trace's structural position.
2Reliability
If concentrated acid solution is used to corrode metal traces, then insulating metal salt structure is formed, but production time increases
Solution Approach 1:
The acid concentration is optimized to achieve the desired corrosion effect in minimal time. By precisely controlling the acid concentration parameter, the process achieves complete metal trace insulation formation efficiently, balancing the trade-off between thorough corrosion and production time requirements.
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
The method effectively prevents short circuits by converting the metal traces into insulating metal salt structures at the exposed positions, improving the reliability and display quality of the LCD panels.
Implementation Method 1
dripping concentrated acid solution to the exposed position of the metal trace, and after reacting for a preset time, the metal trace is corroded at the exposed position to form an insulating metal salt structure
Data Source
AI summary
A display panel, a method of making the same, and a display device are disclosed. The method of making the display panel includes: forming a display motherboard including at least one metal trace, the at least one metal trace being connected to all uncut display panels on the display motherboard; cutting the display motherboard along a cutting line to form at least two display panels, where the at least one metal trace is exposed on at least one side of each of the at least two display panels; dripping a concentrated acid solution to an exposed position of the at least one metal trace to react for a preset time, thus corroding the at least one metal trace at the exposed position thus forming an insulating metal salt structure.