Flexible Display Substrate Peeling with Laser Power Feedback
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Solution Overview
Problem
Current substrate peeling devices for flexible display manufacturing face challenges in efficiently separating substrates without causing damage, as the power density of lasers used can be either insufficient for peeling or excessive, leading to substrate damage.
Innovation Solution
A substrate peeling device equipped with a laser irradiation unit and an optical property detection unit that measures the optical properties of the substrates post-separation, allowing for real-time adjustment of laser power density to ensure appropriate peeling without damaging the substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high power density laser is used for substrate peeling, then peeling efficiency is improved, but substrate damage occurs
Solution Approach 1:
The patent employs an optical property detection unit that measures the optical properties of substrates after laser peeling and feeds this information back to the control unit. The control unit adjusts the laser power density based on this feedback to achieve effective peeling while preventing substrate damage, thus resolving the contradiction between peeling efficiency and substrate integrity.
Solution Approach 2:
The patent dynamically changes the laser power density parameter based on measured optical properties of the substrate. By adjusting this critical parameter in real-time, the system achieves optimal peeling efficiency while avoiding excessive power that would cause substrate damage.
2Object-affected harmful factors
If low power density laser is used for substrate peeling, then substrate damage is prevented, but peeling efficiency decreases
Solution Approach 1:
The optical property detection unit provides real-time feedback on substrate characteristics after laser exposure. This feedback enables the control unit to maintain laser power density at levels sufficient for effective peeling while preventing damage, thus resolving the contradiction between substrate protection and peeling efficiency.
Solution Approach 2:
The patent makes the laser power density dynamic rather than static. The system continuously adapts the laser power based on measured optical properties, allowing it to operate at the optimal threshold that achieves peeling without damage, thereby maintaining both substrate integrity and peeling efficiency.
3Device complexity
If fixed laser power density is used, then device complexity is reduced, but peeling quality varies
Solution Approach 1:
The patent introduces an optical property detection unit that measures substrate properties after laser peeling and feeds this information back to the control unit. This feedback mechanism enables automatic adjustment of laser power density to maintain consistent peeling quality across different substrates, resolving the contradiction between device simplicity and manufacturing precision.
Solution Approach 2:
The system performs self-adjustment of laser power density based on optical property measurements. The detection unit and control unit work together to automatically optimize peeling parameters without requiring external intervention, maintaining consistent quality while adding minimal complexity to the overall system.
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 device effectively separates substrates by adjusting laser power based on measured optical properties, preventing damage to the flexible display components and ensuring reliable peeling processes.
Implementation Method 1
A laser having a power density is irradiated on a substrate coupling body
Implementation Method 2
A reflection ratio of the substrate coupling body is measured
Data Source
AI summary
A method for fabricating a display device is provided. A laser having a power density is provided to a substrate coupling body. The substrate coupling body includes a first substrate and a second substrate coupled to the first substrate. The second substrate is separated from the first substrate. An optical property of the first substrate separated from the second substrate is measured. The power density of the laser is adjusted based on the optical property of the first substrate.