Dual-Stage Substrate Cutting Device for Flexible Display Contamination Control
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Solution Overview
Problem
The cutting process for flexible display devices, such as OLED panels, often results in contamination from foreign substances like fumes or particles deposited on the substrate-cutting stage, which are difficult to remove effectively, affecting the quality and efficiency of the cutting process.
Innovation Solution
A substrate-cutting device with a dual-stage system, where a main stage and a dummy stage are spaced apart with a cutting region in between, allowing the dummy stage to be movable and rotatable, enabling the laser beam to cut the substrate while the dummy stage's inclined surface facilitates the removal of foreign substances by allowing them to slide down, thus maintaining a clean cutting environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-stage cutting system is used, then the device structure is simple, but foreign substances accumulate on the stage affecting cutting quality
Solution Approach 1:
The stage is divided into two separate stages: a first stage for supporting the first portion of the substrate and a second stage for supporting the second portion. This segmentation allows each stage to be independently positioned and cleaned, preventing foreign substance accumulation while maintaining cutting precision.
Solution Approach 2:
The two stages are positioned at different heights in the thickness direction of the substrate, creating a vertical separation. This dimensional change allows the cutting region to be exposed between the stages while providing distinct support surfaces, enabling both simple construction and high cutting quality.
2Object-affected harmful factors
If the dummy stage is made movable and rotatable, then foreign substances can be removed effectively, but the device complexity increases
Solution Approach 1:
The second stage is designed with movable and rotatable capabilities, allowing it to change position and orientation dynamically. This enables the inclined surface to be formed for foreign substance removal while maintaining operational flexibility, balancing effectiveness with controlled complexity.
Solution Approach 2:
The inclined surface of the second stage allows foreign substances to slide down and collect at a specific location, enabling self-cleaning functionality. This passive removal mechanism reduces the need for complex active cleaning systems while effectively addressing foreign substance accumulation.
3Reliability
If the dummy stage encloses the main stage, then the cutting region is well protected, but the accessibility for maintenance decreases
Solution Approach 1:
The second stage encloses the first stage in a nested configuration, providing protection for the cutting region while maintaining a compact structure. This nesting arrangement allows both stages to be housed within a common chamber, protecting the cutting area from external contamination.
Solution Approach 2:
The enclosed structure is divided into two independently movable stages, allowing maintenance access through coordinated movement. The segmentation enables each stage to be positioned independently for maintenance while maintaining the protective enclosure during operation.
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 solution effectively removes foreign substances from the cutting area, improving the cleanliness and productivity of the substrate-cutting process, ensuring higher quality cuts and reduced contamination in the manufacturing of flexible display devices.
Implementation Method 1
a laser module that irradiates a laser beam onto a to-be-cut region in the substrate
Implementation Method 2
the dummy stage's inclined surface facilitates the removal of foreign substances by allowing them to slide down
Data Source
AI summary
A substrate-cutting stage includes a main stage and a dummy stage spaced apart from each other with a cutting region interposed therebetween and that support a substrate. The main stage supports a first portion of the substrate, the dummy stage supports a second portion of the substrate, and the cutting region overlaps a to-be-cut portion of the substrate disposed between the first and second portions.