Mechanical Rotation Mechanism for Vacuum Distance Detection
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Solution Overview
Problem
Current vapor deposition devices cannot detect the distance between a carrier and a shielding plate in a vacuum environment, leading to potential interference risks during the preparation of Organic Light Emitting Devices (OLEDs).
Innovation Solution
An apparatus comprising a rotation mechanism and a rotation angle measuring mechanism is used to calculate the distance between the carrier and the plate, allowing for accurate measurement in a vacuum environment. The rotation mechanism includes a rotation shaft, a rotation arm, and a rotation ring with scale marks, enabling precise distance determination without power-dependent sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If practical delivery of the carrier is used for interference detection, then the carrier can be delivered in the vacuum chamber, but it is difficult to determine precise distance and there is a risk of interference
Solution Approach 1:
The patent replaces electronic sensors requiring power supply with a purely mechanical measurement system consisting of a rotation mechanism and scale marks. The rotation arm contacts the shielding plate and rotates the rotation shaft, which turns the rotation ring to indicate distance on the scale marks. This mechanical substitution eliminates power dependency in vacuum environments while achieving precise distance measurement.
Solution Approach 2:
The rotation arm serves as an intermediary mechanical element that transfers contact force from the shielding plate to the rotation shaft. When the carrier approaches the shielding plate, the rotation arm contacts the plate and converts linear motion into rotational motion, enabling indirect measurement of the distance between the carrier and plate through angular displacement.
2Measurement precision
If electronic sensors are used for distance detection, then distance can be measured, but the sensors require power supply which cannot be provided in vacuum environment
Solution Approach 1:
The patent replaces electronic sensors requiring power supply with a purely mechanical measurement system consisting of a rotation mechanism and scale marks. The rotation arm contacts the shielding plate and rotates the rotation shaft, which turns the rotation ring to indicate distance on the scale marks. This mechanical substitution eliminates power dependency in vacuum environments while achieving precise distance measurement.
Solution Approach 2:
The mechanical measurement system operates independently of the vacuum environment's atmospheric conditions, functioning as an inert or neutral solution that is inherently compatible with vacuum conditions. Unlike electronic sensors that require power supply and may be affected by vacuum conditions, the mechanical system uses only physical contact and geometric relationships, making it universally adaptable to vacuum environments.
Data Source
AI summary
The present disclosure relates to an apparatus for detecting a distance between a carrier and a plate, the apparatus comprising: a base provided on the carrier; a rotation mechanism rotatably provided on the base and configured to rotate when the carrier is in contact with the plate during movement of the carrier relative to the plate; a rotation angle measuring mechanism configured to measure a rotation angle of the rotation mechanism so as to obtain the distance according to the rotation angle. The distance between the carrier and the plate can be calculated based on the rotation angle of the rotation mechanism, so that accurate measurement of the distance between the carrier and the plate can be realized. Further, the operation performance of the gap detection apparatus would not be affected or damaged by the vacuum environment.