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AssigneeAsmpt Singapore Pte. Ltd.
InventorsTsz Kit Yu, Ka Shing Kwan, Hoi Ting Lam, Hing Leung Li
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An ultrasonic transducer that is configured to selectively operate at first or second resonant frequency during wire bonding operations includes an elongated transducer body an aperture for mounting a piezoelectric driver stack for driving the ultrasonic transducer to operate at the first or second resonant frequency and a mounting flange connected to the transducer body at a first nodal vibration region of the transducer body when the ultrasonic transducer is operated at the first resonant frequency. The elongated transducer has a length substantially equal to two wavelengths of a first oscillatory wave that is transmitted along the length of the transducer body when the transducer is operated at the first resonant frequency, and substantially equal to a half wavelength of a second oscillatory wave that is transmitted along the length of the transducer body when the transducer is operated at the second resonant frequency.
An ultrasonic transducer configured to selectively operate at both a first resonant frequency in a first oscillatory mode where a first oscillatory wave is transmitted along a length of the transducer and a second resonant frequency in a second oscillatory mode where a second oscillatory wave is transmitted along the length of the transducer during wire bonding operations, the ultrasonic transducer comprising:
Dependencies are inferred from the claim text.