Display Substrate ESD Dummy Circuits for Panel Crack Trace Protection
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Solution Overview
Problem
Micro cracks in the edge of display substrates during manufacturing can lead to quality issues and low yield due to static electricity accumulation on panel crack detection traces, causing other traces to burn out.
Innovation Solution
Incorporating electrostatic discharge dummy circuits connected to the panel crack detection trace to discharge static electricity, preventing damage to other traces and improving substrate yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrostatic discharge dummy circuits are added to discharge static electricity on the panel crack detection trace, then the reliability of the display substrate is improved, but the device complexity increases
Solution Approach 1:
The patent employs dummy circuits as disposable protective elements that sacrifice themselves to protect the main detection trace. These dummy circuits are designed to be simple, easy to manufacture, and replaceable, absorbing static electricity damage so that the critical panel crack detection trace remains intact and functional.
Solution Approach 2:
The electrostatic discharge dummy circuits serve as intermediary protective elements between the static electricity threat and the panel crack detection trace. They intercept and dissipate static charges before they can reach and damage the critical detection circuitry, acting as a buffer zone.
2Reliability
If electrostatic discharge dummy circuits are disposed on both sides of the electrostatic discharge circuits, then the protection against static electricity is enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
The protective electrostatic discharge structure is segmented into multiple dummy circuits positioned on both sides of the main electrostatic discharge circuits. This segmentation distributes the protective function across multiple locations, enhancing overall protection while allowing each individual dummy circuit to be manufactured using standard processes.
Solution Approach 2:
The dummy circuits are pre-positioned and configured during manufacturing to provide immediate protective coverage. By establishing this protective arrangement in advance during the manufacturing process, the substrate is protected from static electricity damage before it leaves the production line.
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 electrostatic discharge dummy circuits effectively release static electricity from the panel crack detection trace, preventing trace burnout and enhancing the manufacturing yield of display substrates by ensuring the reliability of the discharge process.
Implementation Method 1
at least one of the plurality of electrostatic discharge dummy circuits is electrically connected to the panel crack detection trace and configured to discharge static electricity on the panel crack detection trace
Data Source
AI summary
Provided is a display substrate. The display substrate includes: a base substrate, a plurality of sub-pixels, a plurality of data lines, a plurality of data transmission lines, a plurality of electrostatic discharge circuits, a panel crack detection trace, and a plurality of electrostatic discharge dummy circuits. At least one of the electrostatic discharge dummy circuits may be connected to the panel crack detection trace. A display device is also provided.