Innovative Foldable Display Design Balances Large Screen and Compact Form Factor
- Raphaël Hoesli
- Aug 23, 2024
- 3 min read
I am reading this article on digitec.ch about Huawei’s bi-fold smartphone.
“Yu Chengdong, the CEO of the Huawei Consumer Group, has already been caught twice in public with the new bi-fold smartphone. However, there is no concrete information about the device yet.”
That’s right, there’s nothing concrete yet, but there are sometimes already a lot of information avaialble in patent publications. Here is an overview of the most relevant patent found:
FOLDABLE DISPLAY ASSEMBLY FOR ELECTRONIC DEVICE
WO2022171300A1
HUAWEI TECH CO LTD, HEISKANEN JUUSO
Bibliographic data:
Publication date: | 2022-08-18 |
Application date: | 2021-02-12 |
Priority date: | 2021-02-12 (EP2021053512W) |
Application number: | EP2021053512 |
Inventors: | HEISKANEN JUUSO, VÄNSKÄ ANSSI, KANGASMAA HEIKKI, HARJU JONNE |
CPC classification: | G06F 1/1616 G06F 1/1641 H04M 1/0214 H04M 1/0247 H04M 2250/16 |
IPC classification: | G06F 1/16, H04M 1/02 |
Legal status: | INACTIVE () |
Expiration: | 2023-09-12 (31 months limit, exceptions may apply) |
Family status: | ACTIVE |
External links: |
The foldable display assembly described in this patent represents a significant advancement in the field of flexible electronic devices, offering a glimpse into the future of portable technology. The core innovation lies in the unique display configuration and hinge system, which together allow the device to transition seamlessly between a large, unfolded state and a compact, folded state, catering to both functionality and portability.
Dual Display Design for Maximum Screen Real Estate
One of the standout features of this design is the inclusion of two separate displays—the first display (4) and the second display (8). When the device is unfolded, these displays are arranged to extend in parallel or coplanar planes, effectively doubling the total screen area available to the user. This is a significant advantage over single-display foldable designs, as it provides a much larger canvas for activities such as web browsing, media consumption, and multitasking, greatly enhancing the user experience.
Protective Folding Mechanism for the Second Display
While the dual-display setup is beneficial for usability, it also introduces challenges in protecting the more sensitive second display (8) when the device is folded. The patent addresses this by designing the second display to be foldable, with its two halves (8a, 8b) facing each other in the closed position. This clever folding mechanism shields the second display from potential damage, significantly improving the overall durability of the device and ensuring longevity even with regular use.
Synchronized Hinge System for Seamless Folding
Another key innovation is the use of two separate hinge assemblies—the first hinge (6) connecting the display arrangement (3) to the first housing section (5a), and the second hinge (7) connecting the second housing section (5b) to the first housing section. These hinges are meticulously configured to pivot the housing sections and displays in the same direction, ensuring a smooth and synchronized folding action. This design choice helps the device transition effortlessly between unfolded and folded states, eliminating any awkward or misaligned movements that could detract from the user experience.
Protective Features for the Primary Display
Even when the device is folded, the patent has considered ways to protect and maintain the functionality of the primary first display (4). By designing the first display to form the outer surface of the device when folded, the patent ensures that this display remains accessible and usable even in its compact form. Additionally, the inclusion of a recess (11) in the first housing section to accommodate the display arrangement further enhances the protection of the primary display, safeguarding it from potential damage during everyday use.
Conclusion
Overall, this patent demonstrates a well-rounded approach to foldable display design, striking a balance between the need for a large screen and the practical considerations of portability and durability. The technical details surrounding the dual display configuration, synchronized hinge system, and protective features make this a compelling innovation in the rapidly evolving world of flexible electronics, potentially setting new standards for future devices.
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