Substrate Collecting Device with Segmented Stages
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Solution Overview
Problem
Existing substrate collection devices lack an efficient mechanism for selectively detaching and collecting multiple substrates attached to a sheet, particularly in a manner that allows for precise positioning and easy detachment without complex mechanisms.
Innovation Solution
A substrate collecting device with a first stage for holding the sheet, an optical system for observing substrates, a collector, and a second stage that moves the optical system and collector horizontally, enabling the substrates to be detached and collected by adjusting positions and using a sampler with a pushing mechanism or ultraviolet irradiation to release the substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a mechanism is designed to selectively detach and collect multiple substrates from a sheet, then substrate collection efficiency is improved, but device complexity increases
Solution Approach 1:
The device is divided into two independent stages: a first stage for holding and positioning the sheet, and a second stage for moving the optical system and collector. This segmentation allows each stage to have specialized, simplified functions rather than requiring a single complex mechanism to handle all operations.
Solution Approach 2:
The second stage serves multiple functions by alternatively positioning both the optical system and the collector at the working position, enabling both observation and collection operations to be performed by the same mechanical structure.
2Adaptability or versatility
If the first stage has a large movement range for positioning substrates, then positioning flexibility is improved, but the jogging function complexity increases
Solution Approach 1:
The positioning function is segmented between two stages: the first stage handles coarse positioning with a narrow, simple jogging function, while the second stage handles the optical system and collector positioning. This division allows the first stage to maintain simplicity while still achieving the required positioning flexibility through coordination with the second stage.
3Measurement precision
If the optical system and collector are positioned with high precision, then observation and collection accuracy are improved, but the positioning mechanism complexity increases
Solution Approach 1:
Positioning accuracy requirements are segmented between stages: the first stage requires high precision for substrate positioning relative to the sampler (narrow movement range), while the second stage can use a simpler positioning mechanism since it only needs to alternatively position the optical system and collector, not require the same level of precision.
4Ease of operation
If an inverted optical design is used to observe substrates from below, then observation capability is improved, but the mechanical configuration complexity increases
Solution Approach 1:
The second stage is designed to alternatively position both the optical system and the collector at the working position. This multi-functional design allows the inverted optical configuration to be maintained while using the same mechanical structure for both observation and collection operations, reducing overall mechanical complexity.
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 precise and efficient collection of substrates with simplified mechanical design, allowing for accurate positioning and detachment of desired substrates with minimal mechanical complexity, while maintaining an inverted optical design for observation.
Implementation Method 1
an optical system that observes one or more of the plurality of substrates on the stage
Implementation Method 2
the optical system may be provided with a reflector that reflects, at the first position, an image of at least one of the plurality of substrates the substrate on the first stage
Implementation Method 3
the substrate disposed at the predetermined relative position is detached and dropped by the sampler
Data Source
AI summary
The present invention provides a substrate collecting device that includes a first stage on which a sheet is placed with a plurality of substrates facing downward, an sampler which carries out a predetermined operation on some of the substrates, which are disposed at predetermined positions, from above the first stage thereby to cause the substrates to come off from the sheet and fall, an optical system and a collector disposed below the first stage, and a second stage, which integrally moves the optical system and the collector in a horizontal direction. The second stage is capable of positioning the optical system and the collector at two positions at which the optical system or the collector is disposed substantially vertically below a predetermined position.