It's possible that the combination of ultrasonics and an LCD could be used in medical imaging devices. For example, in ultrasound imaging systems, LCDs might be used to display the results. One potential application could be in the field of medical ultrasound, where a 1 MHz ultrasonic transducer generates sound waves, and the resulting data is processed and displayed on an LCD screen for diagnostic purposes. Ultrasonics at 1 MHz might also find applications in industrial or scientific settings for purposes such as material testing, cleaning, or flow measurements. It's also possible that you're referring to a specific device or technology that integrates these elements for a specialized application. In that case, more details would be needed to provide specific information.