Display Panel Laser Cutting With Protective Film Mask Layer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display device manufacturing processes face challenges in cutting laminated members without causing damage and residue from adhesive layers, which compromises process reliability.
Innovation Solution
A method involving laser cutting with a mask layer formation on protective films to minimize damage and residue, using specific laser wavelengths and transmittance settings to precision-cut display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laser cutting is performed directly on the protective film without forming a mask layer, then the cutting process is simpler and faster, but the laminated members (optical layer, adhesive layers) are damaged and adhesive residues remain
Solution Approach 1:
A mask layer is formed on the protective film before the cutting process through preliminary laser irradiation. This mask layer serves as a protective barrier that prevents direct laser contact with the laminated members, thereby preventing damage and adhesive residues while maintaining the cutting effectiveness
2Productivity
If laser energy is increased to ensure complete cutting, then cutting efficiency is improved, but damage to laminated members and adhesive residues increase
Solution Approach 1:
The mask layer acts as an intermediary between the laser and the laminated members. It absorbs excess laser energy and prevents direct transmission to the optical layer and adhesive layers, allowing high laser energy to be used for efficient cutting without causing damage or adhesive residues to the underlying components
3Ease of manufacture
If the protective film is cut along with the display module, then the cutting process is simpler, but adhesive residues from the protective film remain on the display module
Solution Approach 1:
The mask layer is designed to be detachable from the protective film after the cutting process. This allows the mask layer (which contains the adhesive residues) to be removed separately from the display module, achieving clean cutting without leaving adhesive residues on the final product
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
Improves process reliability by reducing damage to laminated members and adhesive residues, ensuring precise cutting of display devices without defects.
Implementation Method 1
forming a mask layer on the first protective film by irradiating a first laser light on the first protective film along a first processing line
Implementation Method 2
cutting the preliminary display device at an outer periphery of the second processing line by irradiating providing a second laser light on the first protective film along a second processing line positioned at an outer periphery of the first processing line
Data Source
AI summary
A method for manufacturing a display device includes providing a preliminary display device including a display module, an optical layer disposed on a first surface of the display module, a first protective film disposed on the optical layer, a second protective film disposed on a second surface of the display module, a first adhesive layer disposed between the optical layer and the first protective film, and a second adhesive layer disposed between the second protective film and the display module, forming a mask layer on the first protective film by irradiating a first laser light on the first protective film along a first processing line, and cutting the preliminary display device at an outer periphery of the second processing line by irradiating a second laser light on the first protective film along a second processing line positioned at an outer periphery of the first processing line.