Multi-Radius Window Molding for Large-Angle Curved Displays
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Solution Overview
Problem
Existing window processing technologies struggle to efficiently manufacture windows with large bending angles and varying curvature radii, which are necessary for advanced display devices like curved displays.
Innovation Solution
A window molding apparatus and method that utilizes an inner molding part with sub-bottom surfaces of varying curvature radii and an outer molding part with corresponding sub-groove surfaces, allowing for the formation of windows with distinct sub-bent portions and non-bent portions, facilitated by heat application and movable molds to achieve precise bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional window processing technology is used, then manufacturing simplicity is maintained, but the ability to produce windows with large bending angles and varying curvature radii is insufficient
Solution Approach 1:
The molding part is divided into multiple sections, each with different curvature radii, allowing the formation of windows with complex bending profiles including large bending angles and varying curvature radii while maintaining manageable device complexity through modular design
Solution Approach 2:
Different portions of the molding part are designed with locally optimized curvature radii to produce specific bending characteristics in different regions of the window, enabling precise control over the bent portion's shape while keeping the overall apparatus relatively simple
2Adaptability or versatility
If a single curvature radius molding part is used, then device complexity is reduced, but the ability to produce windows with multiple curvature radii is limited
Solution Approach 1:
The molding part is segmented into multiple regions with different curvature radii, enabling the production of windows with complex multi-radius bending profiles while maintaining a relatively simple integrated structure that does not require multiple separate molding components
Solution Approach 2:
The molding part is designed with multi-functional capability to produce windows with various bending configurations including different curvature radii and bending angles using a single molding component, thereby increasing adaptability without proportionally increasing device complexity
3Strength
If heat treatment is applied during molding, then window flexibility for bending is improved, but energy consumption increases
Solution Approach 1:
Temperature is used as a controllable parameter to temporarily change the window material's flexibility during the molding process, allowing it to conform to the complex bending profile, after which the material returns to its original state, providing a balance between achieving the desired shape and managing energy input
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
Enables the production of windows with complex bending angles and varying curvature radii, enhancing the durability and protection of display devices while accommodating diverse display surface configurations.
Implementation Method 1
A window molding apparatus and method using the same, which may provide heat to a window in a bending direction
Data Source
AI summary
Provided is a window molding apparatus including an inner molding part including a core molding part, which includes a plurality of sub-bottom surfaces having different curvature radii, and a flat molding part spaced apart from the sub-bottom surfaces and disposed on the core molding part, and an outer molding part which is disposed below the inner molding part with a member to be processed therebetween and in which a groove corresponding to the core molding part is defined. The outer molding part includes a lower surface, an upper surface configured to face the lower surface, and a plurality of sub-groove surfaces having different curvature radii that define the groove to provide a window including sub-bent portions having different curvature radii.