Kulicke & Soffa Industries has been granted a patent for an ultrasonic welding system with a support structure, weld head assembly, z-axis motion system, z-axis encoder, and overtravel encoder. The system allows precise control and monitoring of motion during the welding process. GlobalData’s report on Kulicke & Soffa Industries gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Kulicke & Soffa Industries, Under-screen biometric identification was a key innovation area identified from patents. Kulicke & Soffa Industries's grant share as of April 2024 was 48%. Grant share is based on the ratio of number of grants to total number of patents.

Ultrasonic welding system with z-axis motion and encoders

Source: United States Patent and Trademark Office (USPTO). Credit: Kulicke & Soffa Industries Inc

The granted patent (Publication Number: US11958124B2) describes an ultrasonic welding system that includes a support structure for holding a workpiece and a weld head assembly with an ultrasonic converter carrying a sonotrode. The system features a z-axis motion system with a z-axis forcer for moving the weld head assembly along the z-axis and a z-axis overtravel mechanism to prevent excessive movement. It also includes encoders for sensing motion along the z-axis, ensuring precise control during welding operations.

Furthermore, the ultrasonic welding system can utilize different types of z-axis forcers such as a linear motor, ball screw system, or pneumatic cylinder for moving the weld head assembly. The system also incorporates a secondary z-axis forcer to provide variable force along the z-axis. Additionally, the sonotrode is designed to operate at specific bond forces and motion amplitudes during welding, offering versatility in welding different types of workpieces. The system can handle various workpieces like power modules, lead frames, and battery modules, with the sonotrode capable of forming ultrasonic welds between terminals and other portions of the workpiece. Overall, the patented ultrasonic welding system offers precise control, flexibility, and efficiency in joining components through ultrasonic welding processes.

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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.