Micro LED Display Panel Redundant Wiring for Pixel Repair
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Solution Overview
Problem
Current Micro LED display panel repair methods are complex and inefficient, particularly due to difficulties in removing and replacing light-emitting elements without affecting other elements and conductive lines, which hinders mass production and commercial application.
Innovation Solution
A method involving a conductive layer with a redundant connecting line that allows for electrical connection with a standby light-emitting element, enabling replacement of abnormal elements without physical removal, using techniques like laser cutting and thermal fusion to connect the redundant line to the original line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If traditional removal and replacement method is used, then light-emitting element can be replaced, but operation complexity increases and success rate decreases due to difficulty in accessing bottom of element
Solution Approach 1:
Instead of removing the light-emitting element from below as in traditional methods, the patent inverts the approach by connecting the redundant conductive line from the same side (top side) where the element is mounted. The redundant conductive connecting line is electrically connected to the original conductive connecting line through a switching element, allowing replacement without accessing the bottom of the element, thus simplifying the repair operation.
Solution Approach 2:
The patent introduces a switching element as an intermediary component between the original conductive connecting line and the redundant conductive connecting line. This switching element enables selective electrical connection, allowing the system to switch from the original light-emitting element to the standby element without direct physical manipulation of the element itself, reducing operational complexity and increasing success rate.
2Ease of repair
If physical removal of light-emitting element is performed, then replacement is possible, but risk of affecting other elements and conductive lines increases
Solution Approach 1:
The patent extracts the light-emitting element from the circuit connection while leaving the physical structure intact. By using the switching element to disconnect the original conductive connecting line and connect the redundant line, the element can be electrically removed and replaced without physical manipulation that could damage surrounding elements or conductive lines.
Solution Approach 2:
Instead of physically removing the element to replace it, the patent inverts the approach by keeping the element in place and replacing its electrical connection through the switching element. This allows element replacement functionality without the harmful physical removal process that could affect other components.
3Productivity
If redundant conductive line is always connected, then standby element is ready for replacement, but normal operation complexity increases
Solution Approach 1:
The patent implements a dynamic connection configuration where the switching element can change the electrical connection state between the original and redundant conductive lines. During normal operation, the switching element connects only the original line; during repair, it switches to connect the redundant line. This dynamic adaptability provides repair efficiency without permanently increasing device complexity.
Solution Approach 2:
The redundant conductive connecting line is pre-configured and positioned alongside the original line during manufacturing, but remains electrically disconnected during normal operation. This preliminary preparation allows for rapid repair activation when needed, improving repair efficiency without adding operational complexity during normal device function.
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
This approach simplifies the repair process, increases success rate, and reduces operational complexity, making it more efficient and cost-effective for Micro LED display panel maintenance.
Implementation Method 1
the spacer between the conductive connecting line and the redundant conductive connecting line is capable of being melted by a laser so that the redundant conductive connecting line is electrically connected to the conductive connecting line
Implementation Method 2
a conductive connecting line for electrically connecting with a light-emitting element
Data Source
AI summary
A display panel is provided with a conductive layer having a conductive connecting line for connecting a light-emitting element. The conductive layer is further provided with a redundant conductive connecting line for connecting a standby light-emitting element. The repair method of the display panel includes: detecting whether the light-emitting element is abnormal; electrically connecting the redundant conductive connecting line with the conductive connecting line when the light-emitting element is abnormal; and connecting the standby light-emitting element to a redundant conductive connecting line to replace the light-emitting element with abnormal function.