Film Peeling Apparatus Vertical Orientation
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Solution Overview
Problem
Existing film peeling apparatuses face challenges in efficiently peeling films from substrates, particularly in large display device manufacturing, as they often require extensive installation space, lead to organic material contamination, and result in non-uniform peeling due to horizontal substrate disposition and belt tension issues.
Innovation Solution
A film peeling apparatus that orients the substrate vertically, utilizing a conveying unit, first and second peeling units, and a knife unit with actuators and negative pressure control to securely hold and tilt the substrate, allowing for precise peeling of films from a vertical position, minimizing contamination and installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If films are peeled from horizontally disposed substrates using existing apparatuses, then the peeling process can be performed, but the installation space required is extensive and organic material contamination occurs
Solution Approach 1:
The patent changes the substrate disposition from horizontal to vertical orientation. The conveying unit transports substrates in a vertical direction, and the peeling units are positioned to peel films from vertically disposed substrates. This dimensional change reduces the horizontal installation space required and prevents organic material contamination by changing the gravity-dependent flow patterns during peeling.
2Manufacturing precision
If films are peeled from horizontally disposed substrates, then the peeling process can be performed, but non-uniform peeling occurs due to belt tension issues
Solution Approach 1:
Instead of peeling films from horizontally disposed substrates using belts that are subject to tension variations, the patent inverts the approach by disposing substrates vertically and using gravity-assisted conveying. The conveying unit uses vertical movement without complex belt tensioning systems, and the peeling units apply force from opposite sides horizontally, ensuring uniform peeling without belt tension issues.
3Reliability
If the substrate is oriented vertically with multiple peeling units, then uniform peeling is achieved and contamination is reduced, but the device complexity increases
Solution Approach 1:
The patent divides the peeling function into multiple independent peeling units (first peeling unit and second peeling unit) that operate on opposite sides of the vertically disposed substrate. Each peeling unit can be independently controlled, allowing uniform peeling from both sides simultaneously. The conveying unit is also segmented into distinct functional sections (conveying section, holding section, peeling section), simplifying the control of each segment's function.
Solution Approach 2:
The patent uses negative pressure (vacuum) holding sections with through-holes to securely hold the substrate during vertical conveying and peeling operations. The negative pressure control unit creates uniform holding force across the substrate surface without mechanical clamps or complex positioning mechanisms, simplifying the device while ensuring reliable substrate fixation during the peeling process.
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
Enables uniform film peeling from vertically disposed substrates, reduces the risk of organic material contamination, and optimizes the installation area, improving the efficiency and precision of the peeling process.
Implementation Method 1
a second control valve to control a negative holding pressure of the second holder
Data Source
AI summary
A film peeling apparatus that peels off a film from a peeling object having the film and a substrate, the film peeling apparatus including a base; a conveying unit to hold a first side of the peeling object and to turn the peeling object from a parallel orientation with respect to the base to a perpendicular orientation with respect to the base; a first peeling unit to receive the peeling object from the conveying unit and to hold a second side of the peeling object in the perpendicular orientation; a second peeling unit to hold the first side of the peeling object, the second peeling unit facing the first peeling unit; and a knife unit that is reciprocably movable toward and away from an edge of the peeling object and movable along an edge of the peeling object.