Japan Display has been granted a patent for a sensing device with multiple sensing electrodes, read-out circuits, and an arithmetic circuit. The device can process sensing signals, store different sampling frequencies, and calculate noise levels. GlobalData’s report on Japan Display gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Japan Display, Under-screen fingerprint recognition was a key innovation area identified from patents. Japan Display's grant share as of January 2024 was 61%. Grant share is based on the ratio of number of grants to total number of patents.

Capacitive sensing device with multiple sampling frequencies for noise calculation

Source: United States Patent and Trademark Office (USPTO). Credit: Japan Display Inc

A recently granted patent (Publication Number: US11886662B2) discloses a sensing device with a unique configuration. The device includes a plurality of sensing electrodes arranged in both row and column directions, a sensing circuit with read-out circuits connected to the electrodes, and an arithmetic circuit for processing sensing signals. The read-out circuits are designed to detect different sensing signals based on various drive signals and sampling frequencies. An arithmetic circuit calculates noise levels using the output signals from the read-out circuits, providing a comprehensive analysis of the data gathered.

Furthermore, the patent details a driving method for the sensing device, emphasizing the one-to-one connection between sensing electrodes and read-out circuits via wiring. The method involves reading and driving the circuits simultaneously at multiple sampling frequencies, generating output signals for arithmetic processing. By utilizing different sampling frequencies and conducting thorough arithmetic calculations, the method aims to accurately determine the amount of noise present in the sensing device. This innovative approach to sensing technology showcases a sophisticated system for noise detection and signal processing, potentially offering advancements in various industries requiring precise sensing capabilities.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.