Adjustable Rotating Blade Etching for Foldable UTG Windows
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Solution Overview
Problem
Existing etching methods for ultra-thin glass (UTG) in foldable display devices are inefficient, limiting the development of foldable windows.
Innovation Solution
An etching device with a rotating structure and adjustable rotating blades is used to create openings in a container filled with an etching solution, allowing for precise etching of glass substrates to form patterns, particularly in folding regions of foldable windows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional etching methods are used for ultra-thin glass, then the etching process can be performed, but the manufacturing efficiency is low and the process is complex
Solution Approach 1:
The etching device divides the container into multiple compartments separated by partition walls, with each compartment containing a different etching solution. This segmentation allows simultaneous etching of different regions of the glass substrate with different etching rates, improving manufacturing efficiency while maintaining a relatively simple overall structure.
Solution Approach 2:
The rotating blade structure serves multiple functions: it acts as a barrier to prevent mixing of etching solutions between compartments, provides support for the glass substrate, and enables controlled rotation to achieve uniform etching. This multi-functionality reduces the need for additional components, simplifying the device while enhancing productivity.
2Adaptability or versatility
If a fixed-length rotating blade is used, then the structure is simple, but it cannot adapt to different opening sizes or etching patterns
Solution Approach 1:
The rotating blade is designed with an adjustable length mechanism, allowing the blade length to be dynamically changed according to the required opening size and etching pattern. This dynamic adjustment capability enables the same device to handle various etching configurations without requiring multiple specialized blades, thus improving adaptability while keeping the overall structure manageable.
3Reliability
If the rotating blade is always engaged with the opening, then the opening is always closed, but this prevents etching solution from reaching the substrate
Solution Approach 1:
The rotating blade periodically engages with and disengages from the opening during the etching process. When the blade rotates into position, it closes the opening to prevent solution mixing; when it rotates away, the opening opens to allow etching solution contact with the substrate. This periodic action ensures both reliable opening closure when needed and efficient etching when the blade is retracted.
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 device enables efficient and simple manufacturing of foldable windows with reduced bending radius, enhancing the flexibility and durability of display devices.
Implementation Method 1
etching a portion of the target substrate by rotating the rotating blade to form a pattern on the target substrate
Data Source
AI summary
An etching device includes: a container configured to contain an etching solution and defining at least one opening therein, and a rotating structure disposed within the container and including a rotating blade engageable with the at least one opening, where the rotating blade is provided to be adjustable in length in an extending direction.