Cassette for Curved Substrates Using Sloping Ribs
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Solution Overview
Problem
Cassettes for curved substrates face issues with bending and damage due to unsupported middle portions, and high manufacturing costs and limited loading capacity when using molds for curved substrates, especially for large-area display panels.
Innovation Solution
A cassette design featuring sloping ribs and a paper-based structure with laminated layers, including a base plate, protector, and rib members with angled protrusions to prevent contact between curved substrates and facilitate easy insertion/removal, while reducing manufacturing costs and improving loading capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cassettes with straight ribs are used for curved substrates, then the ends of substrates are supported, but the middle portions are unsupported causing bending and damage
Solution Approach 1:
The rib members are designed with sloping surfaces that provide localized support matching the curvature of substrates at different positions. The slope angle varies along the rib length to correspond to the curvature variation of curved substrates, ensuring proper support at both ends and middle portions without causing deformation
Solution Approach 2:
The rib members are designed with variable slope angles to match the curvature parameters of curved substrates. By changing the geometric parameters of the rib members (slope angle, height, spacing), the cassette can accommodate different curvature radii and substrate sizes, preventing bending and damage
2Reliability
If molds are used to manufacture cassettes for curved substrates, then curved substrate support is achieved, but manufacturing costs increase significantly
Solution Approach 1:
The cassette is divided into modular components: base plate, multiple rib members with different slope angles, and side walls. These segmented parts can be manufactured separately using simple processes and assembled together, eliminating the need for expensive custom molds while maintaining curved substrate support capability
Solution Approach 2:
The rib members are designed as universal components that can support various types of curved substrates with different curvature radii by selecting appropriate slope angles. The same basic rib member structure serves multiple functions for different substrate curvatures, reducing the need for specialized molds for each application
3Reliability
If molds are used to manufacture cassettes for curved substrates, then curved substrate accommodation is achieved, but loading capacity is limited due to shaping limitations
Solution Approach 1:
The rib members with sloping surfaces are designed to be flexible in accommodating different substrate curvatures and sizes. The cassette structure can dynamically adapt to various loading configurations by selecting appropriate rib members with different slope angles, maximizing loading capacity without being constrained by fixed mold shapes
Data Source
AI summary
A cassette includes a base plate in which first and second holes are defined at both opposite edges thereof, a protector which is coupled to the first hole disposed at the both opposite edges of the base plate, is placed in a direction perpendicular to a plane of the base plate, and third holes, and a rib member which includes a rib protruding from the protector, a second protrusion protruding in a direction from the rib to be coupled to the second hole, and third protrusions protruding in another direction from the rib to be coupled to the third holes, where the third holes of the rib member are defined to slope at a predetermined angle to a thickness surface of the protector such that the rib is at a predetermined angle to a plane of the protector, and the third protrusions are coupled to the third holes.