Patterned Screen Etching for Flat, Slim Cover Windows
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Solution Overview
Problem
Existing cover windows for flexible display devices face challenges in maintaining flatness and structural integrity while being slim and resistant to repeated touches and pressures, such as from a touch pen.
Innovation Solution
The apparatus for manufacturing a cover window includes a screen with patterned holes and a screen frame, utilizing a squeegee and ink supply to etch and form a slim, flat cover window with improved structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the cover window is made slim to reduce material usage and improve portability, then the flatness and structural integrity deteriorate
Solution Approach 1:
The screen is divided into multiple pattern portions with different hole configurations. The first pattern portion has holes for etching the first groove, while the second pattern portion has holes for etching the second groove. This segmentation allows selective material removal in specific regions to create depth variations that restore flatness without requiring additional material throughout the entire cover window.
Solution Approach 2:
Different regions of the screen have different hole patterns and sizes. The first and second pattern portions have different hole configurations tailored to create specific groove structures. This local differentiation enables precise control over where material is removed, allowing the cover window to be slim overall while having localized structural reinforcements where needed to maintain flatness.
2Quantity of substance
If the cover window is made slim to reduce material usage, then the strength to withstand repeated touches and pressures deteriorates
Solution Approach 1:
The screen is segmented into multiple pattern portions that create different groove structures. The first and second grooves are formed with different hole configurations, allowing for differentiated structural properties in different regions. This enables the cover window to maintain strength in high-stress areas while remaining slim in other areas.
Solution Approach 2:
The cover window incorporates a multi-layer composite structure including the substrate, transparent resin layer, and patterned screen with different hole patterns. The combination of these layers with different material properties and structural characteristics creates a composite material that provides both slimness and enhanced strength to withstand repeated touches and pressures.
3Manufacturing precision
If the screen has pattern portions with multiple holes to improve manufacturing precision, then the device complexity increases
Solution Approach 1:
The screen pattern is segmented into distinct first and second pattern portions, each with specific hole configurations for creating different grooves. This segmentation organizes the complexity into manageable sections with clear functional differences, making the manufacturing process more controllable and precise despite the increased overall pattern complexity.
Data Source
AI summary
An apparatus for manufacturing a cover window includes a first screen, a second screen spaced apart from the first screen, and a screen opening disposed between the first screen and the second screen, wherein each of the first screen and the second screen includes a pattern portion disposed adjacent to the screen opening, the pattern portion of each of the first screen and the second screen includes two or more holes spaced apart from each other, and widths of the two or more holes are different from each other.