Walk the independent claim. The grant US10627945B2, "Touchscreen, method for touch detection, and wearable device" (issued April 21, 2020; assignee Anhui Huami Information Technology, the maker behind Amazfit and Zepp), is a granted patent. Its CPC mix — G06F 3/0412 and G06F 3/044 for touch sensing, plus G06F 1/1652 for a flexible display — signals a touchscreen built for a non-flat, wearable surface.
The element that does the work is constraint-driven detection. A wrist display is small, often curved, and on a strict power budget; the capacitive baselines and noise environment differ from a phone's. The claim's contribution is a detection method tuned to those conditions — reliably distinguishing touch from noise on a tiny, possibly flexed surface without draining a watch battery.
What it reads on is the smartwatch and fitness-band touchscreen, a category where Amazfit/Zepp competes directly with Apple, Samsung, and Garmin. The wearable-specific framing matters: this is not a claim that would obviously read on a phone, but one targeted at the wrist form factor.
Scope discipline: capacitive touch detection is old art, and the claim does not own it. What it protects is the recited wearable-adapted method. A competitor whose wrist device uses a materially different detection scheme would not necessarily read on it — the defensible element is the adaptation, not the sensing principle.
Granted status makes the grant a real consideration in the wearable touchscreen space, which is more crowded with smaller assignees than the phone space. For a strategist mapping who owns what in wrist-display sensing, US10627945B2 marks a position held by a significant Chinese wearable maker rather than one of the usual platform giants.
The landscape signal is that wearable touch sensing is its own art with its own patents, distinct from the phone touchscreen lineage. Treating a watch screen as a small phone screen misses both the engineering and the IP — the constraints, and the claims that solve them, are specific to the wrist.