Orthogonal Substrate Orientation for Uniform Spacing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing substrate processing apparatuses face challenges in maintaining uniform distance between substrates, leading to potential contact and processing issues due to warping, which affects the efficiency and accuracy of substrate alignment and processing.
Innovation Solution
A substrate arrangement apparatus and method that includes a holder for each substrate group, a substrate alignment mechanism for rotating the groups to determine circumferential orientations, and a mechanism to alternately dispose substrates front-to-back, ensuring the first radial direction of one group is orthogonal to the second, with curvature adjustments to maintain uniform spacing and prevent contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If substrates are arranged in a batch with alternating front-to-back disposition, then substrate processing efficiency is improved, but distance uniformity between adjacent substrates deteriorates due to warping
Solution Approach 1:
The patent applies preliminary action by determining the circumferential orientation of substrates before they are arranged in the batch. The substrate alignment mechanism rotates substrate groups to align their radial directions orthogonally in advance, ensuring that when substrates are disposed alternately, their warped surfaces face away from each other, thus preventing contact and maintaining distance uniformity throughout the batch processing operation.
Solution Approach 2:
The patent resolves the contradiction by introducing a dimensional change in the arrangement pattern. Instead of arranging substrates with parallel radial directions, the invention disposes first and second substrate groups with their radial directions orthogonal to each other (at angles of 45-135 degrees). This orthogonal arrangement in a different dimensional orientation ensures that warped surfaces of adjacent substrates face away from each other, preventing contact while maintaining uniform spacing in the batch configuration.
2Quantity of substance
If substrates with opposite warpage are arranged adjacent to each other, then batch assembly density is improved, but substrate contact occurs reducing processing reliability
Solution Approach 1:
The patent applies asymmetry by creating an asymmetric arrangement pattern where the radial direction of the first substrate group is orthogonal to the radial direction of the second substrate group. This asymmetric disposition ensures that substrates with opposite warpage are oriented such that their convex surfaces face away from each other, preventing contact while maintaining high batch assembly density. The asymmetric orthogonal arrangement (45-135 degree angle) eliminates the symmetry that would cause opposite-warped substrates to contact.
Solution Approach 2:
The substrate alignment mechanism acts as an intermediary that mediates the arrangement between substrates with opposite warpage. By rotating and orienting substrate groups orthogonally before assembly, the alignment mechanism ensures that warped surfaces are positioned to face away from each other, preventing direct contact. This intermediary alignment step allows dense batch assembly while maintaining processing reliability through proper orientation control.
Data Source
AI summary
In a substrate arrangement apparatus, a holder elevating mechanism disposes each first substrate between each pair of second substrates, with the first and second substrates being alternately arranged front-to-front and back-to-back. Each substrate is curved in a first radial direction to one side in a thickness direction with a minimum curvature, and curved in a second radial direction orthogonal to the first radial direction to the one side in the thickness direction with a maximum curvature. The first radial direction of the first substrates, each arranged between each pair of the second substrates, is approximately orthogonal to the first radial direction of the second substrates. This improves uniformity in the up-down direction of the distance in the direction of arrangement between the first and second substrates that are alternately arranged adjacent to each other in the direction of arrangement.