Adhesive Dispensing Nozzle Cleaning for Camera Module Dust Traps
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Solution Overview
Problem
The challenge in manufacturing camera modules is preventing dust contamination of image sensors during the assembly process, particularly due to the low viscosity and fast hardening of adhesive liquids used in dust traps, which can smear on nozzles and degrade dispensing quality.
Innovation Solution
An apparatus and method that includes an adhesive liquid pump, a pump transporting unit, and a cleaning unit to effectively dispense adhesive liquid around the image sensor while cleaning the nozzle using a dissolving cleaning liquid to prevent contamination and maintain dispensing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive liquid with low viscosity and fast hardening speed is used to form dust trap, then dust contamination prevention is improved, but nozzle contamination and dispensing quality degradation occur
Solution Approach 1:
The cleaning unit performs preliminary cleaning action on the nozzle before adhesive liquid is dispensed, preventing contamination rather than correcting it afterward. The cleaning liquid is supplied to the nozzle in advance to dissolve and remove any residual adhesive, ensuring the nozzle remains clean for accurate dispensing.
Solution Approach 2:
A cleaning liquid is introduced as an intermediary substance between the adhesive liquid and the nozzle. This cleaning liquid dissolves the adhesive liquid that smears on the nozzle, acting as a mediator that removes the harmful substance without directly affecting the adhesive dispensing process.
2Productivity
If adhesive liquid is dispensed continuously to maintain productivity, then manufacturing efficiency is improved, but nozzle contamination accumulates and hardens
Solution Approach 1:
The cleaning liquid is supplied continuously or periodically to the nozzle during the adhesive dispensing process, maintaining continuous cleaning action without interrupting production. This ensures the nozzle remains clean throughout continuous operation, preventing contamination accumulation while maintaining productivity.
Solution Approach 2:
The cleaning liquid is supplied at periodic intervals to the nozzle during continuous adhesive dispensing. This periodic cleaning action removes adhesive buildup before it can harden and cause problems, allowing continuous production while preventing contamination accumulation.
3Manufacturing precision
If cleaning unit is added to remove adhesive from nozzle, then dispensing quality is improved, but device complexity increases
Solution Approach 1:
The cleaning unit is integrated into the existing adhesive dispensing apparatus, allowing the same system to perform both adhesive dispensing and nozzle cleaning functions. This multi-functionality reduces the need for separate standalone cleaning equipment, thereby limiting the increase in device complexity.
Solution Approach 2:
The cleaning liquid supply mechanism is merged with the adhesive dispensing system, combining two functions (adhesive dispensing and nozzle cleaning) into a single integrated apparatus. This merging reduces the number of separate components and simplifies the overall system structure.
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 solution ensures accurate and efficient dispensing of adhesive liquid for dust traps, preventing nozzle contamination and enhancing the quality and productivity of the camera module manufacturing process by effectively cleaning and wiping the nozzle.
Implementation Method 1
a cleaning unit configured to generate a flow of a cleaning liquid with respect to the nozzle of the adhesive liquid pump transported using the pump transporting unit so as to clean the nozzle by using the cleaning liquid that dissolves the adhesive liquid
Data Source
AI summary
Provided are apparatus and method of dispensing an adhesive liquid for a dust trap, in which the adhesive liquid is dispensed to a camera module while effectively cleaning the adhesive liquid that may be smeared on a nozzle, thereby enhancing productivity and quality of a process of forming a dust trap.