Laser Scanner Shutter Control for Uniform Display Cutting
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Solution Overview
Problem
Existing laser apparatuses for manufacturing display devices struggle to uniformly irradiate laser beams along cutting lines on target substrates, leading to inconsistencies in cutting precision and efficiency.
Innovation Solution
A laser apparatus comprising a stage, a laser providing unit, a scanner with a shutter for adjusting the optical path of the laser beam, and a control unit to manage the scanner's operation. The shutter is opened when the laser beam's moving speed is higher than or equal to a reference speed and closed otherwise, ensuring uniform irradiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the laser beam is continuously emitted during scanning, then processing speed increases, but energy distribution becomes inconsistent at different positions
Solution Approach 1:
The patent employs feedback mechanisms to monitor and adjust laser energy distribution in real-time during scanning. By detecting variations in processing conditions and feedback-controlled adjustment of laser parameters, the system maintains consistent energy delivery across different sections of the cutting line, preventing both under-processing and over-processing at various positions.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting laser operating parameters such as power, pulse duration, and scanning speed during the cutting process. These parameter modifications are made in response to position and processing conditions, enabling the laser to deliver appropriate energy levels at each location along the cutting line while maintaining overall processing efficiency and uniformity.
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 uniform laser beam irradiation along the cutting line, improving cutting precision and efficiency by ensuring consistent energy application across the target substrate.
Implementation Method 1
a laser providing unit configured to emit a laser beam during a first period and a second period
Implementation Method 2
the shutter is opened during the first period to allow the emitted laser beam to travel, and is closed during the second period to block travel of the emitted laser beam
Data Source
AI summary
A laser apparatus and a method for manufacturing a display device are provided. A laser apparatus includes: a stage; a laser providing unit above the stage and configured to provide a laser beam; a scanner configured to adjust an optical path of the laser beam such that the laser beam is irradiated to an irradiation line formed above the stage; and a control unit to control an operation of the scanner, and the scanner includes a shutter located on an optical path of the laser beam emitted from the laser providing unit and configured to perform an opening/closing operation.