Reflective Layer Stabilizes Laser Cutting on Display Panels
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Solution Overview
Problem
Existing display device manufacturing methods face challenges in accurately cutting holes for functional elements due to laser vibration, leading to inaccuracies and reduced yield.
Innovation Solution
A display device with a reflective layer comprising multiple refractive layers of different indices, alternately laminated and disposed on a polarization film around the cut region, effectively reflects laser light and stabilizes the cutting process, ensuring accurate and smooth cut lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser is used to cut the display panel, then cutting speed and efficiency are improved, but laser vibration causes inaccurate cut lines and reduces manufacturing precision
Solution Approach 1:
A reflective layer is introduced as an intermediary component between the laser source and the display panel. This reflective layer precisely controls the position and direction of the laser beam, acting as a mediator that eliminates the harmful effects of laser vibration while maintaining the high cutting efficiency of the laser method
Solution Approach 2:
The reflective layer is designed with specific structural parameters (layer thickness of 50-200 nm, material refractive index) to optimize laser reflection and positioning. By controlling these parameters, the system maintains stable laser beam characteristics despite vibration, thereby improving cut line accuracy while preserving cutting speed
2Reliability
If process margin is increased to compensate for laser vibration, then manufacturing reliability is improved, but manufacturing precision deteriorates due to larger tolerances
Solution Approach 1:
The reflective layer provides a stable optical reference that enables precise feedback control of the laser cutting process. By using the reflective layer as a consistent reference surface, the system can maintain tight tolerances and high precision while ensuring reliable manufacturing outcomes
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 solution enables precise cutting of holes for functional elements, reducing process margins and improving manufacturing efficiency by accurately processing holes for elements like cameras and speakers.
Implementation Method 1
The reflective layer may be configured to reflect a laser light
Implementation Method 2
The reflective layer may comprise a plurality of refractive layers having at least two refractive indexes different from each other
Data Source
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AI summary
A display device including: a display panel (DP); a polarization film (POL) disposed on the display panel (DP); and a reflective layer (RL) disposed on the polarization film (POL), wherein the reflective layer (RL) is disposed between a first hole (H) and a first groove (G1), wherein the first hole (H) passes through the display panel (DP) and the polarization film (POL), and the first groove (G1) is provided in the display panel (DP) around the first hole (H).