LED Chip Detection Using Viscous Liquid Mediator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge lies in developing an effective detection method for small-sized LED chips used in display devices, as existing methods struggle to ensure quality control due to the miniaturization of LED chips, which complicates the manufacturing process.
Innovation Solution
A detection method involving a solvent mixture of IsoPropyl Alcohol (IPA) and an organic substance with a higher viscous coefficient is used to mix with LED chips, followed by transfer onto a base with receiving holes, where electrical and light intensity tests are conducted to classify the chips based on quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If LED chip size is reduced to meet display device miniaturization requirements, then display device size is reduced, but detection difficulty increases and quality control becomes more challenging
Solution Approach 1:
The patent introduces a detection liquid as an intermediary medium to hold and position the LED chips during detection. The detection liquid with specific viscosity allows small-sized chips to be stably suspended and manipulated, enabling effective detection despite the chips' miniaturization. This mediator bridges the gap between chip size reduction and detection capability.
Solution Approach 2:
The patent modifies physical parameters of the detection system by controlling the viscosity of the detection liquid and adjusting detection sensitivity parameters. By changing these parameters, the system can effectively detect and classify small-sized LED chips that would be difficult to detect using conventional methods, thus resolving the contradiction between chip size reduction and detection difficulty.
2Volume of moving object
If LED chip size is reduced, then display device size is reduced, but manufacturing process complexity increases
Solution Approach 1:
The detection liquid serves as a mediator that simplifies the manufacturing process for small-sized chips. By using the liquid medium to hold, transport, and position chips, the patent avoids complex mechanical handling systems that would be required for precise manipulation of miniaturized components, thus reducing overall manufacturing process complexity.
Solution Approach 2:
The patent employs hydraulic principles by using a liquid medium (detection liquid) to manipulate and position LED chips throughout the detection process. This fluid-based approach is simpler than pneumatic or mechanical systems for handling small components, reducing manufacturing process complexity while enabling effective processing of miniaturized chips.
3Ease of manufacture
If conventional detection methods are used for small-sized LED chips, then existing equipment can be utilized, but quality control effectiveness decreases
Solution Approach 1:
The patent changes key parameters including detection liquid viscosity, detection sensitivity thresholds, and classification criteria to effectively detect and evaluate small-sized LED chips. These parameter adjustments enable existing equipment to maintain or improve quality control effectiveness despite the challenges posed by chip miniaturization, resolving the contradiction between equipment utilization and quality control effectiveness.
Data Source
AI summary
A detection method for an LED chip comprising the following steps: providing a container with a solvent therein, and putting the LED chips in the container to mix the LED chips with the solvent; providing a base with a circuit therein, the base forms a plurality of receiving holes, a bottom of each receiving holes have an N electrode and a P electrode coupled with the circuit; transferring the solvent and the LED chip mixed in the solvent on the base; detecting the LED chip received in the receiving holes; providing a carrier film and classifying the LED chips on the carrier film.