Electronic device

This invention describes an electronic device, like a phone or tablet, that has a display and a sensor positioned directly behind it. The device operates by rapidly switching between two modes: one where the display is fully active, and another where a specific part of the display is temporarily turned off to allow the hidden sensor to function. These on and off periods for the display are designed to be of equal duration, creating a cyclical operation for the under-display sensor.

Why it matters: When filed in 2017, under-display sensors were nascent, requiring dedicated hardware. By 2026, the underlying technology for under-display fingerprint readers and cameras, which use similar time-multiplexing of display pixels, has matured and is widely adopted in consumer electronics.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedUnder-display sensor, custom display panel, control software.

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