MicroLED Driver IC Repair Wiring for Faulty Terminal Bypass
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing of microLED display panels is hindered by the need for time-consuming and costly re-work to repair abnormalities like open or short circuits during driver IC mounting, which often damages nearby microLEDs.
Innovation Solution
Incorporating power-signal and signal terminals with associated repair terminals and wires on the substrate, allowing for selective severance and rerouting of connections using laser cutting and soldering to bypass faulty terminals without removing and replacing the driver IC, thereby reducing repair time and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If re-work is performed to repair abnormalities by removing and re-mounting driver IC, then the abnormality can be corrected, but substantial time is consumed and nearby microLEDs may be damaged
Solution Approach 1:
The driver IC connection is segmented into multiple independent pathways: original signal wires and alternative repair wires. When an abnormality occurs in the original connection, the system can switch to the repair wire pathway, avoiding the need to remove and re-mount the entire driver IC, thus reducing repair time and preventing damage to nearby microLEDs
Solution Approach 2:
Repair wires are pre-configured and positioned on the substrate before driver IC mounting. These repair wires are initially disconnected but ready for use, allowing rapid switching to alternative connections when abnormalities occur, eliminating the time-consuming process of removing and re-mounting the driver IC
2Reliability
If re-work is performed to repair abnormalities by removing and re-mounting driver IC, then the abnormality can be corrected, but cost increases substantially
Solution Approach 1:
The connection system is divided into original signal pathways and alternative repair pathways, allowing localized repairs without complete driver IC replacement. This segmentation reduces manufacturing costs by enabling cheaper, faster repair processes while maintaining connection reliability
Solution Approach 2:
Repair infrastructure (repair wires and switching mechanisms) is built in advance during substrate preparation. This preliminary action enables cost-effective repairs later, as the expensive driver IC无需 be removed and re-mounted, reducing both time and cost overhead
3Reliability
If re-work is performed to repair abnormalities by removing and re-mounting driver IC, then the abnormality can be corrected, but nearby microLEDs are damaged
Solution Approach 1:
The connection system is segmented into original and repair pathways, allowing repair operations to be performed on the repair wires rather than removing the driver IC. This isolation prevents mechanical stress and potential damage to nearby microLEDs while still correcting the driver IC connection abnormality
Solution Approach 2:
Repair wires act as intermediary connections that can be manipulated and reconfigured without directly handling the driver IC or nearby microLEDs. This intermediary mechanism enables repair operations to be performed at a safe distance, preventing harmful effects on surrounding components
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
Enables efficient and cost-effective repair of microLED display panels by minimizing the need for re-work, reducing time and potential damage to microLEDs, and maintaining panel functionality without replacing the driver IC.
Implementation Method 1
severing a connection between the signal terminal and the signal wire by a laser cutting
Implementation Method 2
soldering another connection between a repair terminal and the repair wire
Data Source
AI summary
A micro-light-emitting diode (microLED) display panel includes a substrate and a driver bonded on the substrate. The driver includes a signal terminal coupled with a signal wire disposed on the substrate; and a repair terminal associated with the signal terminal, the repair terminal coupled with a repair wire disposed on the substrate.