Adjustable Gas Supply Pipe for Evaporation Apparatus
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Solution Overview
Problem
Existing evaporation apparatuses for depositing materials on flexible substrates often result in irregularities in the optical appearance and integrity of the coating, which are not acceptable for applications like the packaging industry, despite efforts to improve productivity and quality.
Innovation Solution
An evaporation apparatus with a set of aligned evaporation crucibles and a gas supply pipe with adjustable outlets, allowing for precise control of the gas supply position and direction to generate a gradient layer by reacting evaporated material with gas, thereby adjusting the composition and properties of the deposited layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of material sources is increased to improve productivity, then the production speed increases, but the complexity of the apparatus increases
Solution Approach 1:
The gas supply pipe is made adjustable and rotatable, allowing dynamic repositioning of the gas supply outlets to optimize their position relative to the evaporation crucibles. This dynamic capability enables a single gas supply pipe to effectively service multiple crucibles at different positions, improving productivity without proportionally increasing apparatus complexity
Solution Approach 2:
A single gas supply pipe with multiple adjustable outlets serves multiple evaporation crucibles, making the gas supply system multi-functional. This universal approach allows one gas supply component to perform the function that would otherwise require multiple fixed gas supply pipes, thereby improving productivity while limiting complexity increase
2Manufacturing precision
If multiple gas supply pipes are used to improve layer uniformity, then the manufacturing precision increases, but the device complexity increases
Solution Approach 1:
The gas supply pipe is segmented into multiple outlets distributed along its length, with each outlet capable of independent positioning. This segmentation allows precise local control of gas supply to different regions of the substrate, improving layer uniformity while using a single integrated pipe structure rather than multiple separate pipes
Solution Approach 2:
The gas supply pipe can be rotated and repositioned to dynamically adjust the spatial distribution of gas outlets relative to the evaporation crucibles and substrate. This dynamic adjustment capability enables optimization of gas flow patterns for uniform layer deposition without requiring multiple fixed gas supply pipes
3Device complexity
If the gas supply position is fixed, then the device complexity is reduced, but the ability to control layer composition and properties is limited
Solution Approach 1:
The gas supply pipe is designed with rotational and positional adjustability, transforming it from a fixed to a dynamic component. This allows the same simple pipe structure to adapt to different crucible positions and gas flow requirements, enabling control of layer composition and properties without significantly increasing apparatus complexity
Solution Approach 2:
The position and orientation parameters of the gas supply pipe can be changed to optimize gas flow patterns and reaction conditions. By adjusting these parameters, different layer compositions and properties can be achieved with a single adjustable pipe rather than requiring multiple fixed pipes for each configuration
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
This solution enables the production of high-quality gradient layers with controlled barrier and optical properties, improving durability and appearance, suitable for packaging applications, by allowing for precise adjustment of the layer composition and thickness.
Implementation Method 1
a first set of evaporation crucibles (111-117) aligned in a first line (120) along a first direction for generating a cloud of evaporated material to be deposited on the substrate
Implementation Method 2
providing a gas supply directed into the cloud of evaporated material through a plurality of outlets (133) of a single gas supply pipe (130) for generating the second composition
Data Source
Figure 1~3
Figure 4A~5B
Figure 6~8
AI summary
An evaporation apparatus (100) for depositing material on a flexible substrate (160) supported by a processing drum (170) is provided. The evaporation apparatus includes: a first set (110) of evaporation crucibles aligned in a first line (120) along a first direction for generating a cloud (151) of evaporated material to be deposited on the flexible substrate (160); and a gas supply pipe (130) extending in the first direction and being arranged between an evaporation crucible of the first set (110) of evaporation crucibles and the processing drum (170), wherein the gas supply pipe (130) includes a plurality of outlets (133) for providing a gas supply directed into the cloud of evaporated material, and wherein a position of the plurality of outlets is adjustable for changing a position of the gas supply directed into the cloud of evaporated material.