US20250024701
2025-01-16
Electricity
H10K50/8426
The foldable display device is designed with a flexible display module that incorporates an electroluminescent unit, a flexible functional module, and a flexible window module. These components are layered in such a way that they align on a single plane at one side, creating an acute angle with the light-emitting surface of the window module. This design enables the device to be folded, providing versatility and convenience for users seeking larger screens only when needed.
The flexible functional module offers several capabilities, including polarization, color filtering, color conversion, touch sensing, and biometric information recognition. Positioned atop the flexible display module, it enhances the device's interactive and visual functionalities. The flexible window module covers these layers, ensuring protection and durability while maintaining flexibility.
The device features distinct side portions for foldable and non-foldable regions. The foldable region includes a cushion module under the display for added support during folding. In contrast, the non-foldable regions have specific plane assignments for each module's side surfaces, ensuring structural integrity. A bent portion is included in one non-foldable region to align with the flexible window module's side surface.
The display module is protected by a dual encapsulation structure composed of inorganic materials. The electroluminescent unit is positioned between these layers within an inorganic-inorganic contact closed loop, which shields it from external elements. This encapsulation approach enhances the device's longevity and performance by preventing damage to critical components.
The device also includes advanced etching techniques using lasers with extremely short pulse widths to achieve precise structural alignment. Additionally, it integrates multiple regions with varying lengths and directions to accommodate different folding mechanics, optimizing both functionality and form factor. These innovations collectively contribute to a robust yet adaptable foldable display solution.