Curved Display Device with Pre-formed Support Plate
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Solution Overview
Problem
Existing methods for manufacturing flexible displays with bent edges face limitations, such as the inability to form displays with extended curvature and potential damage from adhesive squeeze-out, leading to reduced product yield and reliability.
Innovation Solution
A display device comprising a support plate with a flat and bent area, where the display panel and cover glass are bonded and bent to match the support plate's shape, using a support plate made of rigid materials like metals or plastics to maintain the curved shape and prevent adhesive issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a flexible display with bent edges is manufactured using conventional methods, then the display can achieve curved shapes, but adhesive squeeze-out occurs and product yield decreases
Solution Approach 1:
The support plate is pre-formed with the desired bent shape before the display panel and cover glass are assembled. This preliminary formation of the curved structure eliminates the need for post-assembly bending, preventing adhesive squeeze-out and ensuring consistent curvature across all components.
Solution Approach 2:
A support plate is introduced as an intermediary component between the display panel and cover glass. This support plate maintains the curved shape and provides structural stability, allowing the display assembly to achieve and retain bent edges without compromising product reliability.
2Shape
If the display panel is bent to extended curvature, then the display can extend across front, side, and back surfaces, but manufacturing difficulty increases
Solution Approach 1:
The support plate is pre-formed with extended curvature in the desired configuration before assembly. This preliminary shaping allows the display panel and cover glass to be simply mounted onto the pre-curved support plate, greatly simplifying the manufacturing process compared to attempting to bend assembled components.
Solution Approach 2:
The display device is divided into separate components (support plate, display panel, cover glass) that can be manufactured and shaped independently. The support plate carries the extended curvature while the other components remain relatively simple, making the overall manufacturing process more feasible.
3Strength
If adhesive is applied to bond the display panel and cover glass, then the components are securely attached, but adhesive squeeze-out damages the contact area
Solution Approach 1:
The support plate is pre-formed with the bent shape before adhesive application. This eliminates the need to bend components after assembly, preventing adhesive squeeze-out that would occur during post-assembly bending operations while maintaining secure bonding strength.
Solution Approach 2:
The support plate structure is designed to accommodate and contain the adhesive within the bonding area. The pre-formed curved structure provides mechanical constraints that prevent adhesive from squeezing out during assembly, protecting the contact area from damage.
Data Source
AI summary
A display device can include a support plate having a flat area and a bent area, a display panel bonded to the support plate and bent along the bent area of the support plate, and a cover glass bonded to the display panel and bent along the bent area of the support plate.