Nozzle Cleaning Device with Segmented Scraping Notches
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Solution Overview
Problem
The material used for coating RGB films in TFT-LCD manufacturing tends to adhere to nozzles, causing residue and photoresist buildup, which existing cleaning methods fail to effectively address.
Innovation Solution
A cleaning device with a base seat and multiple scrape components arranged in a straight line, featuring notches and bevels that match the nozzle, allowing for sequential scraping and reduced pressure and abrasion, effectively removing residue from the nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple scrape components are used to clean the nozzle simultaneously, then the cleaning efficiency is improved, but the wear on each scrape component is reduced due to distributed pressure
Solution Approach 1:
The cleaning device divides the single scraping function into multiple scrape components (first scrape component, second scrape component, third scrape component) arranged in sequence. Each component has its own scraping surface that contacts the nozzle separately, distributing the cleaning action across multiple elements rather than concentrating it on one component.
Solution Approach 2:
The device changes the pressure distribution parameter by using multiple scrape components instead of one. The total cleaning force is distributed across multiple contact points, reducing the pressure on each individual scrape component while maintaining effective cleaning through cumulative action.
2Reliability
If the nozzle is scraped repeatedly to remove photoresist residue, then the cleaning thoroughness is improved, but the abrasion of scrape components increases
Solution Approach 1:
The cleaning action is segmented across multiple scrape components that can be arranged in sequence along the nozzle path. This allows the nozzle to be cleaned repeatedly by passing through the same multiple components, distributing the wear across all components rather than concentrating it on a single scraping surface.
Solution Approach 2:
The device is designed so that scrape components can be individually replaced when worn, while the rest of the system remains intact. This allows for selective replacement of only the worn scraping surfaces rather than discarding the entire cleaning device, recovering and reusing the non-worn 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
The device efficiently cleans nozzles by reducing residue buildup and minimizing scrape component wear, allowing for repeated use and improved manufacturing processes.
Implementation Method 1
the bevels cooperatively form the notch, when the nozzle is scraped, the nozzle passes through the notches of all the scrape components in sequence, the bevels rub the nozzle
Data Source
AI summary
The present disclosure provides a cleaning device for nozzle, which includes: a base seat and a plurality of scrape components defined on the base seat, the scrape components are arranged in a straight line, a rear end of each of the scrape components form a notch, the notches match with the nozzle, the nozzle passes through the notches of all the scrape components in sequence and contracts with all the scrape components when the nozzle is scraped, to scrape the residue photoresist away from the nozzle by scraping the nozzle multiple times.