Display Coating Temperature Control for Uniform Substrate Flatness
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Solution Overview
Problem
Existing manufacturing processes for display apparatuses face challenges in ensuring a flat application of coating liquids on base substrates, particularly in bendable electronic devices, where uneven coating can lead to structural issues.
Innovation Solution
An apparatus and method involving a stage with discharge and temperature adjustment units, including conductive units and Peltier elements, to precisely control the application and temperature of coating liquids on base substrates, ensuring uniform coating by adjusting the position and temperature of the coating liquid to maintain flatness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a coating liquid is sprayed onto a base substrate using a discharge unit, then the coating liquid can be applied to the substrate, but the coating liquid may become uneven or non-flat on the substrate surface
Solution Approach 1:
The patent applies temperature adjustment to the conductive units to change the physical state and surface tension of the coating liquid. By controlling temperature parameters, the system achieves flat and uniform coating application, resolving the contradiction between manufacturing precision and ease of operation.
Solution Approach 2:
The patent employs sensor units to detect the flatness and height of the coating liquid in real-time. This feedback mechanism allows the system to monitor coating quality and adjust parameters accordingly, ensuring both precision and uniformity are achieved simultaneously.
2Manufacturing precision
If the coating liquid is applied without temperature control, then the manufacturing process is simpler, but the coating liquid height becomes uneven
Solution Approach 1:
The patent introduces temperature as a controllable parameter to achieve uniform coating liquid height. The temperature adjustment units modify the physical properties of the coating liquid, enabling precise height control despite the increased device complexity.
Solution Approach 2:
The patent applies temperature adjustment to the conductive units before coating liquid application. This preliminary action prepares the substrate and coating liquid in advance, ensuring optimal conditions for uniform coating and reducing the need for complex real-time adjustments.
3Manufacturing precision
If the conductive units are positioned at fixed locations, then the device structure is simpler, but the coating liquid cannot be evenly distributed across different areas
Solution Approach 1:
The patent makes the conductive units dynamically adjustable in position rather than fixed. The position adjustment units allow the conductive units to be relocated based on detected coating liquid height variations, achieving even distribution across different substrate areas while managing device complexity.
Solution Approach 2:
The patent applies different positions and temperature adjustments to different conductive units based on local coating liquid height requirements. This localized approach ensures uniform distribution across the substrate by tailoring the treatment to each specific area's needs.
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
The solution ensures a flat and uniform application of coating liquids on base substrates, enhancing the structural integrity and performance of bendable display apparatuses by minimizing uneven coating issues.
Implementation Method 1
a first element unit configured to transmit a temperature higher than room temperature to the 1-1 conductive unit and to transmit a temperature lower than room temperature to the 1-2 conductive unit
Data Source
AI summary
An apparatus for manufacturing a display apparatus includes a stage on which a base substrate is seated, a discharge unit on the stage and configured to spray a first coating liquid onto the base substrate, a first sensor unit configured to detect a height of the first coating liquid applied to a first area of the base substrate, and a first temperature adjustment unit configured to adjust a temperature of the first coating liquid applied to the first area of the base substrate.