Display LED Mending Procedure for Multi-Defect Welding

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Solution Overview

Problem

Existing mending methods for displays with defective light emitting diodes require multiple repetitive steps, increasing time and reducing yield due to inefficient defect addressing.

Innovation Solution

A method that plans and executes a mending process by searching for defect positions, using a transferring device with miniature light emitting elements, and efficiently welding them at corresponding positions in a sequence to minimize mending time and material waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If one defect is mended at every time using current mending technology, then the mending process can be executed step by step, but the mending time increases and production efficiency decreases

Engineering Contradiction:
Improvedefect mending accuracyVSAvoidmending speed
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent merges multiple mending operations into a single coordinated action. The transferring device carries multiple miniature light emitting elements simultaneously, and the control system plans to mend multiple defect positions in one operation rather than sequentially. This combines what was previously separate single-defect mending steps into a unified multi-defect mending process, resolving the contradiction between precision and speed.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent applies preliminary action by pre-arranging multiple miniature light emitting elements on the transferring device before the mending operation begins. The control system pre-plans the mending procedure to identify all defect positions and organize the corresponding light emitting elements in advance. This preliminary preparation enables simultaneous multi-point mending, eliminating the time-consuming sequential approach while maintaining precision.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the mending apparatus executes material taking, attaching and welding steps many times back and forth, then each defect can be addressed individually, but the mending period increases

Engineering Contradiction:
Improvedefect correction completenessVSAvoidmending cycle time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent combines multiple material taking, attaching, and welding steps into a single coordinated operation. The transferring device is loaded with multiple miniature light emitting elements in one material taking action, then performs multiple attaching and welding operations simultaneously at different defect positions during one movement cycle. This merges what were previously repeated sequential steps into a unified process, reducing the mending cycle time while ensuring all defects are corrected.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent achieves continuity of useful action by ensuring the transferring device continuously performs productive mending operations without returning to the material source between defects. Multiple light emitting elements are attached and welded in succession during a single continuous movement of the transferring device, eliminating idle return trips and maintaining continuous productive action throughout the mending cycle.

Inventive Principle:
Principle #20Continuity of useful action

3Productivity

If multiple miniature light emitting elements are used to mend multiple defects simultaneously, then mending efficiency increases, but the complexity of planning and execution increases

Engineering Contradiction:
Improvemending throughputVSAvoidmending process complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The transferring device is designed with multi-functionality, serving both as a carrier for multiple miniature light emitting elements and as a positioning platform for precise delivery to various defect positions. The control system also exhibits multi-functionality by simultaneously performing defect detection, mending procedure planning, and coordination of multiple welding operations. This universality manages the inherent complexity through integrated design.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements feedback mechanisms where the control system monitors the positions of multiple defect positions and adjusts the mending procedure accordingly. The system receives information about defect locations, plans the optimal mending sequence, and coordinates the transferring device movements in real-time. This feedback loop manages the complexity of simultaneous multi-point mending by providing intelligent coordination and adaptive control.

Inventive Principle:
Principle #23Feedback

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

Reduces mending time and material waste by efficiently addressing multiple defects in a single operation, enhancing production efficiency.

Implementation Method 1

move the transferring device to make the plurality of miniature light emitting elements welded at the plurality of defect positions

Methodology Applied
Scientific EffectLaser welding: Laser Beam Welding

Data Source

PatentUS12488717B2Mending method for display
Publication Date: 2025.12.02 CONTREL TECH CO LTD
  • US12488717B2 patent drawing
  • US12488717B2 patent drawing
  • US12488717B2 patent drawing

AI summary

A mending method for a display includes the steps of making a display device light to make a plurality of light emitting positions thereof shine, searching out a plurality of defect positions among the light emitting positions, providing a transferring device having a transferring surface with a plurality of miniature light emitting elements positioned correspondingly to the light emitting positions, planning a mending procedure which includes in the area the transferring surface corresponds to, choosing in chief the largest number of defect positions able to be mended at a single time according to the positions of the miniature light emitting elements and then in the area the transferring surface corresponds to, planning the rest of the defect positions according to the rest of the miniature light emitting elements, and according to the mending procedure, moving the transferring device to weld the miniature light emitting elements at the defect positions.