Xiaomi on Tuesday released a statement refuting an apparent claim made by senior Huawei executive Yu Chengdong that Xiaomi’s dragon bone hinge technology for its foldable phones is a direct copy of Huawei’s dual rotating water drop hinge. Yu, the CEO of Huawei’s consumer department, made these comments during a company event last week; Xiaomi has said the accusation is “seriously inconsistent with the facts.”
Why it matters: One of the key elements of foldable phones lies in their unique hinge design, which directly influences the phone’s folding mechanism and screen creases. The controversy between Huawei and Xiaomi, two of China’s biggest phone brands, reflects intensifying competition in the foldable phone market.
Details: In the statement, Xiaomi posted detailed comparisons, including the application dates, publication dates, and technical features of relevant patents. Both the design concept and mechanical structure of their dragon bone hinge are completely different from Huawei’s dual rotating water drop hinge, according to the statement, which was posted to the company’s account on the Twitter-like Weibo platform.
- “Some companies directly copy our technology and then claim it as their own invention. The concept of the dragon bone hinge is fundamentally non-existent, as they’ve transformed our double rotating water drop hinge into a dragon bone hinge,” said Yu during an annual Huawei event on Dec.10. “Once competitors make modifications, this technology becomes their own,” he added.
- While he didn’t explicitly name the rival phone brand, Yu’s remarks were widely interpreted as an attack on Xiaomi, which launched its new generation of foldable flagship, the Xiaomi MIX Fold 3, in August and is the only phone brand on the market to use what it terms a dragon bone hinge.
- According to Xiaomi’s statement, the dragon bone hinge was patented on September 18, 2020, and received patent authorization on January 5, 2021. Huawei’s dual-rotating water drop hinge was only publicly disclosed on June 18, 2021, though it was patented on December 13, 2019.
- Xiaomi’s dragon bone hinge features a “three-level rod, five-component, seven-low-friction design,” the statement continued, while Huawei’s dual rotating water drop hinge is described as a “two-level rod, three-component, four-low-friction design.”
- Furthermore, Huawei’s current three-level rod patent was applied for on October 29, 2021, and was publicly disclosed on May 5, 2023, but it has not yet entered mass production, according to Xiaomi.
- In the concluding part of the statement, Xiaomi emphasized that Yu Chengdong should adhere to “the basic principles of science” and refrain from misleading the public.
Context: Research firm TrendForce‘s report indicates that the anticipated shipment of foldable smartphones in 2023 is around 18.3 million units, with a year-on-year increase of 43%. Huawei’s estimated shipment of foldable smartphones this year is expected to reach 2.5 million units, according to the same report.
- The Xiaomi MIX Fold 3 set a new record for Xiaomi upon its release, with sales increasing 2.25 times compared to the previous generation, according to the company’s second quarter financial report.
- In the third quarter of 2023, sales of foldable smartphones in the Chinese market reached 1.98 million units, representing a year-on-year increase of 175%, according to CINNO Research. In terms of brand ranking, Huawei occupied the top spot with a market share of 28.6%, while Xiaomi was in sixth place with a market share of 8.7%.