Framed Semiconductor Coating for Uniform Nanomaterial Thin Films
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Solution Overview
Problem
Existing semiconductor-based apparatuses face challenges in achieving high precision and uniformity in layer arrangements, particularly in the deposition of nanomaterial thin films, which often result in non-uniform coatings and issues like 'coffee rings' due to inadequate control over the spreading and drying of inks.
Innovation Solution
A frame structure is introduced around the functional semiconductor-based substrate, which delimits and precisely positions a coating, allowing for high-viscosity inks to be used and ensuring uniform coverage by controlling the spreading and drying of nanomaterial thin films, thereby preventing material aggregation at the periphery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional deposition methods are used for nanomaterial thin films, then the coating process can be performed, but the coating uniformity deteriorates due to material aggregation at periphery and coffee ring effects
Solution Approach 1:
A frame structure is introduced as an intermediary element between the substrate and the coating material. This frame structure serves as a mediator that guides the flow and distribution of high-viscosity ink, preventing direct uncontrolled spreading on the substrate surface and thereby eliminating coffee ring effects and peripheral material aggregation
Solution Approach 2:
The invention changes the viscosity parameter of the coating material by using high-viscosity inks instead of conventional low-viscosity materials. This parameter change, when combined with the frame structure, allows for controlled deposition that prevents material aggregation while maintaining coating uniformity
2Manufacturing precision
If high-viscosity inks are used for nanomaterial deposition, then coating uniformity can be improved, but the ink spreading control becomes more difficult without a frame structure
Solution Approach 1:
The frame structure acts as an intermediary that simplifies the manufacturing process by providing physical boundaries that automatically control ink spreading. This mediator eliminates the need for complex process control mechanisms, making the use of high-viscosity inks straightforward and easy to manufacture
Solution Approach 2:
The frame structure is pre-positioned on the substrate before ink deposition. This preliminary action creates predetermined boundaries that guide the ink flow during deposition, making the subsequent coating process easier to control and manufacture without requiring real-time adjustment mechanisms
3Ease of manufacture
If the coating area is left un delimited, then the application process is simpler, but the coating precision and material distribution uniformity deteriorate
Solution Approach 1:
The coating area is segmented into a defined region by the frame structure, which divides the substrate surface into a controlled coating zone and an uncoated zone. This segmentation provides simple application process boundaries while ensuring precise coating placement and uniform material distribution within the framed area
Solution Approach 2:
The frame structure adds a spatial dimension boundary to the coating process. By introducing vertical sidewalls that extend upward from the substrate, the frame creates a three-dimensional confined space that guides material deposition, thereby achieving precise coating control without complicating the application process
Data Source
AI summary
An apparatus includes a semiconductor-based substrate with a functional structure that is formed in or on the semiconductor-based substrate. The apparatus includes a frame structure surrounding the functional structure and includes a coating that covers the functional structure and is delimited by the frame structure.