Curved Display Panel Molding with Segmented Thimble Pin Control
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Solution Overview
Problem
Existing molding methods for curved display panels are uncontrollable and can cause damage to the display panel, particularly during the formation of four-curved surfaces, leading to wrinkles and poor display effects.
Innovation Solution
A molding device with a mapping structure of thimble pins and a jacking mechanism, where thimble pins are attached to the display panel and driven by independent driving members to control precise shaping, using a bottom plate assembly to manage different areas of the panel independently, reducing stress concentration and enabling accurate molding under normal temperature and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vacuum adsorption or mold pressing methods are used for four-curved surfaces molding, then the display module can be attached to the bearing film, but the molding process becomes uncontrollable and may cause damage to the display module
Solution Approach 1:
The patent divides the bearing film into multiple detachable bearing blocks, each corresponding to a specific region of the display module. This segmentation allows independent control and adjustment of each bearing block, enabling precise control over the molding process while preventing damage to the display module through localized support and control.
2Shape
If compression molding is applied to achieve four-curved surfaces, then the desired curvature can be formed, but the display module may be damaged during the process
Solution Approach 1:
The patent pre-forms individual bearing blocks with specific curvature characteristics before the molding process. These pre-formed bearing blocks are then positioned under the display module, providing gradual and controlled support as the curvature is applied. This preliminary preparation prevents sudden stress concentration that could damage the display module while achieving the desired curved shape.
3Adaptability or versatility
If four-curved surfaces molding is performed on the flexible display module, then the display can achieve true full screen effect, but wrinkles may occur in the four corners affecting display quality
Solution Approach 1:
The patent designs different bearing blocks with location-specific curvature radii and geometric characteristics tailored to their positions on the display module. Corner bearing blocks have different properties compared to edge or center bearing blocks, allowing each region to be molded with optimal parameters that prevent wrinkle formation while maintaining the overall curved display effect and full screen capability.
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 allows for precise control of the molding process, reducing local stress concentration and avoiding damage to the display panel, achieving a better molding effect with controlled deformation and accurate shaping of four-curved surfaces.
Implementation Method 1
a soft cushion disposed at one end of the thimble pin body, the soft cushion is configured to be attached to the display panel
Implementation Method 2
a lubricating layer disposed at another end of the thimble pin body, the lubricating layer is configured to be attached to a corresponding bottom plate
Data Source
AI summary
The present disclosure provides a molding device for a curved display panel, the molding device includes a mapping structure with a plurality of thimble pins and a jacking mechanism, one end of each of the thimble pins is configured to be attached to a display panel, the jacking mechanism includes a plurality of bottom plate and a plurality of driving members, each of the bottom plates is configured to be attached to another end of corresponding thimble pins, any one of the bottom plates is independently driven by one of the driving members, the plurality of bottom plates can separately drive the plurality of thimble pins to drive corresponding areas of the display panel to rise by different displacements and achieve a better molding effect.