Delamination Apparatus Ion Generation for OLED Substrate Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The delamination process in thermal imaging methods for organic light-emitting diode (OLED) displays often results in failures due to inadequate control of electrostatic charges and pressure distribution, leading to potential damage to the acceptor substrate.
Innovation Solution
A delamination apparatus with a first filling roll that includes a fixing shaft, an external roll, a barrier, and ionizers to generate ions, which supports the donor film between the acceptor substrate and the gripper, minimizing electrostatic energy and stress by blowing ions and air uniformly, thereby preventing substrate damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional delamination process is used without ion generation, then the process is simpler, but electrostatic charges accumulate causing substrate damage
Solution Approach 1:
The patent introduces an ion generation system as an intermediary between the donor film and acceptor substrate during delamination. The ions act as a mediator to neutralize electrostatic charges that would otherwise accumulate and damage the substrate. This resolves the contradiction by adding a controlled complexity (ion generation) to prevent greater damage (substrate failure).
Solution Approach 2:
The patent changes the electrical parameter of the delamination environment by generating ions with specific charge characteristics. By controlling ion generation parameters (charge type, density, distribution), the system neutralizes harmful electrostatic charges while maintaining process control. This transforms the electrical state of the interface to prevent substrate damage.
2Productivity
If uniform pressure is applied during delamination, then delamination efficiency improves, but stress concentration may occur causing substrate damage
Solution Approach 1:
The patent replaces purely mechanical pressure application with a combined electrostatic-mechanical system. Instead of relying only on mechanical pressure for delamination, the system uses ion-generated electrostatic forces to assist the separation process. This substitution reduces the mechanical stress concentration on the substrate while maintaining delamination efficiency.
Solution Approach 2:
The patent introduces electrostatic parameters (ion charge, electric field strength) to complement the mechanical pressure parameters. By controlling both electrostatic and mechanical parameters simultaneously, the system achieves efficient delamination with distributed stress, preventing stress concentration and substrate damage.
3Reliability
If ion generation is used to control electrostatic charges, then substrate damage is prevented, but energy consumption increases
Solution Approach 1:
The patent applies ion generation locally at the delamination interface rather than throughout the entire system. The ion source is positioned to generate charges only where needed (at the donor film-acceptor substrate interface), minimizing unnecessary energy consumption while effectively protecting the substrate from electrostatic damage.
Solution Approach 2:
The patent optimizes ion generation parameters (charge density, generation rate, spatial distribution) to achieve the minimum necessary ion concentration for substrate protection. By precisely controlling these parameters, the system prevents substrate damage while minimizing energy consumption associated with ion generation.
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 effectively reduces the risk of substrate damage by controlling electrostatic energy and pressure distribution during delamination, enhancing the reliability and efficiency of the delamination process.
Implementation Method 1
a first filling roll positioned over the donor film, the first filling roll being configured to blow ions toward the donor film while rotating toward the first gripper
Implementation Method 2
blowing ions and air uniformly, thereby preventing substrate damage
Data Source
AI summary
A delamination apparatus includes a stage mounted with a lower supporting member, a donor film laminated to the lower supporting member, and an acceptor substrate sealed between the lower supporting member and the donor film, a first gripper positioned at an end side of the stage, the first gripper being configured to grip an end of the donor film and to move with the end of the donor film away from the acceptor substrate, and a first filling roll positioned over the donor film, the first filling roll being configured to blow ions toward the donor film while rotating toward the first gripper.