Laser Void Separation of Coated Glass Without Organic Film Damage
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Solution Overview
Problem
Existing methods for separating glass articles from glass plates using laser cutting can damage organic films, such as anti-fingerprint films, due to the heat from the laser, leading to reduced manufacturing efficiency and complexity in handling multiple glass substrates.
Innovation Solution
A manufacturing method involving the formation of in-plane void regions and internal void arrays on the glass plate using a first laser, followed by deposition of an organic film and subsequent separation using a second laser, where the laser irradiation conditions are optimized to minimize damage to the organic film, ensuring the ratio of fluorine to silicon counts at specific points meets a threshold of 0.3 or more as determined by X-ray photoelectron spectroscopy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser cutting is used to separate glass articles from glass plates, then separation efficiency is improved, but organic films on the glass surface are damaged by laser heat
Solution Approach 1:
The patent divides the separation process into two distinct stages: first forming void regions within the glass plate using a first laser, then completing the separation using a second laser. This segmentation allows each laser to be optimized for its specific function, with the second laser operating at lower power to preserve organic films while the first laser handles the intensive void formation task.
Solution Approach 2:
The patent performs preliminary action by forming void regions within the glass plate before the actual separation step. These pre-formed voids create pathways that guide the second laser during separation, reducing the energy required and minimizing heat exposure to organic films during the critical separation phase.
2Reliability
If organic films are deposited after glass substrate separation, then film integrity is improved, but manufacturing complexity and handling requirements increase
Solution Approach 1:
The patent applies preliminary action by depositing the organic film on the glass plate before the separation process. This allows the film to be formed in a single continuous operation across the entire plate, avoiding the need to handle and re-deposit films on individual separated substrates, thereby reducing manufacturing complexity while ensuring film integrity.
Solution Approach 2:
The patent merges the film deposition step with the pre-separation processing stage. By depositing films before separation, the process combines what would otherwise be distinct operations (separation then film deposition) into a more integrated workflow, reducing the number of handling steps and overall process complexity.
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 method effectively prevents significant damage to the organic film during the separation process, maintaining the film's integrity and simplifying the manufacturing process by reducing the energy required for separation and minimizing handling complexities.
Implementation Method 1
a step (1) of irradiating a first main surface of a glass plate having the first main surface and a second main surface, opposite each other, with a laser light of a first laser, to form an in-plane void region, in which a plurality of voids are arrayed, on the first main surface, and to form a plurality of internal void arrays, each including a void or two or more voids arrayed from the in-plane void region to the second main surface, in the glass plate
Implementation Method 2
a step (3) of irradiating and scanning the first main surface or the second main surface of the glass plate, on which the organic film was deposited, with a laser light of a second laser that is different from the first laser, along the in-plane void region or a neighborhood of the in-plane void region, to separate one glass article or two or more glass articles from the glass plate along the in-plane void region
Data Source
AI summary
A manufacturing method of a glass article having an organic film includes irradiating a first main surface of a glass plate having the first main surface and a second main surface, opposite each other, with a laser light of a first laser, to form an in-plane void region, in which voids are arrayed, on the first main surface, and internal void arrays, including voids arrayed from the in-plane void region to the second main surface, in the glass plate; depositing the organic film on the first main surface or the second main surface of the glass plate; and irradiating and scanning the first main surface or the second main surface, on which the organic film was deposited, with a laser light of a second laser, along the in-plane void region, to separate the glass article from the glass plate along the in-plane void region.