Texas Instruments. has been granted a patent for a circuit device featuring a series of capacitors with piezoelectric materials. The device generates a strain-induced voltage during a reset mode, which is then combined to produce a piezoelectric-responsive output signal during a separate sensing mode. GlobalData’s report on Texas Instruments gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Texas Instruments, Under-screen biometric identification was a key innovation area identified from patents. Texas Instruments's grant share as of July 2024 was 71%. Grant share is based on the ratio of number of grants to total number of patents.
Piezoelectric capacitive sensing circuit with control mechanisms
The granted patent US12072229B2 describes a circuit device that integrates a series of capacitors, amplifiers, buffers, and switches, all managed by a control circuit. The device features a set of capacitors connected in series to an amplifier, with a first switch linking the capacitors to the amplifier. The control circuit is designed to manage the operation of the switches and the amplifier, ensuring that when one switch is closed, the others remain open, and vice versa. This configuration allows for various operational modes, including reset, polarization, and sensing modes, by controlling the states of multiple transistors associated with the switches.
Additionally, the patent outlines the structure of the switches, which include multiple transistors that facilitate the connection between the buffers and capacitors. The control circuit is equipped with enable outputs that dictate the behavior of these transistors, allowing for precise control over the circuit's functionality. The device also incorporates a programmable gain amplifier and a comparator circuit, enhancing its capability to process signals effectively. The design emphasizes flexibility and adaptability, enabling the circuit to perform various functions based on the control signals received, thereby making it suitable for a range of applications in electronic systems.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
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.
