Laser Cutting Particle Removal Structure for Display Panels
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Solution Overview
Problem
During the laser cutting of mother panels for display devices, particles are generated, leading to contamination of the display panels and manufacturing equipment, which existing technologies fail to effectively prevent or remove.
Innovation Solution
A particle removal device integrated with a laser cutting apparatus, featuring a stage, inner and outer cases with specific discharge and intake openings, a suction pump, and an air injector, which creates a controlled airflow to capture and remove particles generated during cutting, preventing them from leaking outside or contaminating the target substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a laser cutting apparatus is used to cut mother panels, then cutting efficiency and productivity are improved, but particles are generated that contaminate display panels and manufacturing equipment
Solution Approach 1:
The patent extracts and removes particles from the cutting environment using a suction pump that draws particles through a discharge opening. The particle removal device is positioned to capture particles at their source during laser cutting, separating the harmful particles from the production environment while maintaining high cutting efficiency
Solution Approach 2:
The patent introduces air as an intermediary substance to transport particles away from the cutting area. The air injector blows air toward the discharge opening to carry particles outward, while the suction pump creates negative pressure to draw particles through the intermediate airflow path, preventing direct contact between particles and the display panel
2Object-generated harmful factors
If particles are removed using conventional methods, then some particle removal is achieved, but particles still leak outside the removal device and contaminate the target substrate
Solution Approach 1:
The patent uses a carefully designed case structure with controlled openings that acts as a barrier while allowing selective particle removal. The case encloses the particle removal mechanism and directs airflow to prevent particle leakage, creating a controlled environment that protects the target substrate from contamination
Solution Approach 2:
The patent creates a controlled airflow system where air is injected toward the discharge opening and suction is applied simultaneously. This feedback mechanism ensures that particles are consistently drawn outward through the discharge opening and prevents them from leaking back into the cutting environment or onto the target substrate
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
Effectively removes particles generated during the cutting process, preventing contamination of the display panels and manufacturing equipment, ensuring cleaner production conditions and reducing particle leakage.
Implementation Method 1
a suction pump connected to the second discharge opening, with which a suction force is provided to the second discharge opening
Implementation Method 2
an air injector in fluid connection with the internal space of the inner case, with which air is injected to the internal space of the inner case
Implementation Method 3
a laser irradiator that radiates laser light through an internal space of the particle removal device to a target substrate disposed on the stage
Data Source
AI summary
A particle removal device includes: a stage on which a target substrate is disposed; an inner case defining a first discharge opening through which the stage is exposed to an internal space of the inner case; an outer case including: a side wall portion surrounding the inner case, a protrusion portion protruded from the side wall portion toward the inner case, and a second discharge opening in fluid connection with the first discharge opening; a suction pump connected to the second discharge opening; an air injector in fluid connection with the internal space; and an intake opening in fluid connection with the first and second discharge openings. A width of the intake opening as a distance between the distal end of the inner case and the distal end of the protrusion portion is smaller than a width of the first discharge opening.