ROHM had ten patents in advanced materials during Q1 2024. ROHM Co Ltd filed patents for drive devices, transducers, inkjet print heads, and semiconductor devices in Q1 2024. The drive device includes a power supply circuit and a drive circuit operating at different frequencies. The transducers are designed to generate sufficient sound volume, with one having vibrating films arranged in multiple directions. The inkjet print head includes a piezoelectric element and a hydrogen barrier film. The semiconductor device includes a driving circuit for ultrasonic signals and a reverberation reduction operation using a damping circuit. GlobalData’s report on ROHM gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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ROHM grant share with advanced materials as a theme is 10% in Q1 2024. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Drive device and ultrasonic sensor (Patent ID: US20240094367A1)
The patent filed by ROHM Co Ltd describes a drive device that includes a power supply circuit with a switch element and a drive circuit for pulse driving a target element using the voltage from the power supply circuit. The unique aspect of this device is that the power supply circuit operates with a switching frequency different from the frequency of the pulse driving, enhancing its efficiency and performance.
Additionally, the drive device includes a charge pump circuit with a flying capacitor, ensuring that the pulse driving starts after the discharge of the capacitor begins and ends before the discharge ends. The control circuit in the device allows for precise timing of the switching operation of the switch element, further optimizing its functionality. Overall, the drive device is designed to improve the operation of elements like an ultrasonic sensor by efficiently driving them with the unique power supply circuit and drive circuit configuration described in the patent.
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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.
