Piezoelectric Transducer Patents

Piezoelectric transducer patents cover material/piezo innovations; transducer/MEMS innovations; array/integration innovations; and application/system innovations — with IP held by electronics, medical-device, and materials companies and research organizations (in a field of piezoelectric/ultrasound transduction). WHY PIEZOELECTRIC TRANSDUCERS: a 'PIEZOELECTRIC TRANSDUCER' converts between ELECTRICAL signals and MECHANICAL motion/sound using the PIEZOELECTRIC effect — certain materials that generate a VOLTAGE when SQUEEZED (sensing) and conversely DEFORM/VIBRATE when a voltage is applied (actuating); this TWO-WAY conversion makes piezoelectric transducers the WORKHORSE for ULTRASOUND (medical imaging, SONAR, flow/level sensing, cleaning, welding), as well as ACTUATORS, microphones/speakers, fuel INJECTORS, precision positioners, and energy HARVESTERS; most use ceramics like PZT (lead zirconate titanate — high performance) or single crystals; a major SHIFT is toward LEAD-FREE piezoelectrics (for environmental/regulatory reasons) and toward MEMS-based transducers — PMUTs (Piezoelectric Micromachined Ultrasonic Transducers), which integrate tiny piezoelectric vibrating membranes on SILICON chips, enabling COMPACT, low-cost, high-density ultrasound (e.g. whole-body ULTRASOUND-ON-A-CHIP, FINGERPRINT sensors, gesture/proximity sensing); the brutal CHALLENGES: the MATERIAL/PIEZO (the piezoelectric material — high coupling/performance, and LEAD-FREE alternatives — the HEART), the TRANSDUCER/MEMS (the transducer element and especially MEMS/PMUT design — frequency, bandwidth, sensitivity, and CMOS integration), the ARRAY/INTEGRATION (phased arrays, 2D arrays, and integrating with electronics for beamforming), and the APPLICATION/SYSTEM (ultrasound imaging, sensing, actuation, and the system/cost); the make-or-break IP AREAS: the MATERIAL/piezo, the TRANSDUCER/MEMS, the ARRAY/integration, and the application/system; the HARD problems: the MATERIAL, TRANSDUCER, ARRAY, and APPLICATION. MAJOR PLAYERS: MURATA, TDK, BUTTERFLY NETWORK, plus electronics and medical-device companies. Material/piezo, transducer/MEMS, array/integration, and application/system are the core piezoelectric-transducer patent domains — and material, transducer, array, and application are the open whitespace. (Note: a PIEZOELECTRIC TRANSDUCER converts between ELECTRICAL signals + MECHANICAL motion/sound via the PIEZOELECTRIC effect (two-way); the workhorse for ULTRASOUND (medical imaging/sonar/flow-level sensing) + actuators/microphones/injectors/positioners/energy-harvesters; most use PZT or single crystals; major shifts toward LEAD-FREE piezoelectrics + MEMS PMUTs (ultrasound-on-a-chip/fingerprint/gesture); brutal challenges in the MATERIAL/PIEZO (the heart), the TRANSDUCER/MEMS (PMUT/CMOS integration), the ARRAY/INTEGRATION, and the APPLICATION; materials/MEMS/device IP §101-resilient.)

Material/piezo innovations; transducer/MEMS innovations; lead-free-piezoelectric innovations; and PMUT innovations represent core piezoelectric-transducer patent domains — and the material/piezo (the piezoelectric — the heart) and the transducer/MEMS (the element, especially PMUTs) are the foundational, high-value, §101-resilient capabilities. MATERIAL / PIEZO PATENTS: the HEART — the PIEZOELECTRIC MATERIAL (the active material — PZT (lead zirconate titanate — the high-performance workhorse ceramic), single crystals (PMN-PT — highest performance), or emerging LEAD-FREE piezoelectrics (KNN, BNT, etc. — to avoid toxic lead for environmental/regulatory reasons — a key research direction, though matching PZT performance is hard)), the COUPLING COEFFICIENT/PERFORMANCE (how efficiently the material converts electrical↔mechanical — the key metric), THIN FILMS (piezoelectric thin films (AlN, ScAlN, PZT) for MEMS/PMUTs — AlN/ScAlN are CMOS-compatible and lead-free), and RELIABILITY/aging; material methods are core, high-value, DISTINCTIVE IP, §101-resilient (the PIEZOELECTRIC MATERIAL (PZT/single-crystal/LEAD-FREE, coupling coefficient, thin films like AlN/ScAlN) — as composition-of-matter — is the central, most contested, defensible IP, since the material determines conversion efficiency and lead-free is a major opportunity). TRANSDUCER / MEMS PATENTS: the ELEMENT — the transducer ELEMENT design (the vibrating element converting signals), MEMS/PMUT (Piezoelectric Micromachined Ultrasonic Transducers — tiny piezoelectric membranes micromachined on silicon — enabling compact, integrated, high-density, low-cost ultrasound — the major modern shift), FREQUENCY/BANDWIDTH (tuning the operating frequency and wide bandwidth for imaging), SENSITIVITY, and CMOS/CHIP INTEGRATION (integrating the transducer (or PMUT) directly with CMOS readout electronics — enabling ultrasound-on-a-chip); transducer methods are core, high-value, DISTINCTIVE IP, §101-resilient (the transducer ELEMENT and especially MEMS/PMUT design (frequency/bandwidth, sensitivity, CMOS integration) are core, contested, defensible IP, since PMUTs (integrating piezoelectric on silicon) are the modern enabler of compact, low-cost, high-density transducers). LEAD-FREE-PIEZOELECTRIC PATENTS: high-performance lead-free piezoelectric materials; lead-free methods are high-value IP, §101-resilient (lead-free is a key environmental/regulatory opportunity — matching PZT is the challenge). PMUT PATENTS: piezoelectric micromachined ultrasonic transducers on silicon; PMUT methods are high-value IP, §101-resilient (PMUTs enable compact, integrated, low-cost ultrasound — the modern shift). Material/piezo, transducer/MEMS, lead-free-piezoelectric, and PMUT are the highest-value core IP because the piezoelectric material and the transducer (especially PMUTs) are exactly what set conversion efficiency, size, and cost.

Array/integration innovations; application/system innovations; ultrasound-imaging innovations; and ultrasound-on-chip innovations represent additional piezoelectric-transducer patent domains — and the array/integration (forming phased arrays) and the application/system (the ultrasound/sensing/actuation product) turn the transducer into a working, valuable device. ARRAY / INTEGRATION PATENTS: the ARRAY — PHASED/2D ARRAYS (arranging many transducer elements so their signals can be electronically steered/focused (BEAMFORMING) to scan and image — 1D arrays for 2D imaging, and 2D ARRAYS for 3D/volumetric imaging — a key, hard capability), BEAMFORMING ELECTRONICS INTEGRATION (integrating the array with the beamforming/readout electronics — critical for high-element-count arrays), DENSITY (packing many small elements), and MATCHING/BACKING LAYERS (acoustic matching layers (coupling sound into the body/medium) and backing (damping) — key to bandwidth and sensitivity); array methods are core, high-value, DISTINCTIVE IP, §101-resilient (PHASED/2D ARRAYS, beamforming-electronics integration, density, and matching/backing layers are core, contested, defensible IP, since phased/2D arrays and their electronics integration enable steerable, focused ultrasound imaging — especially 3D). APPLICATION / SYSTEM PATENTS: the USE — MEDICAL ULTRASOUND IMAGING (the flagship — diagnostic imaging; and the major shift to handheld/POINT-OF-CARE and ULTRASOUND-ON-A-CHIP (Butterfly Network's PMUT-on-CMOS whole-body probe)), SONAR/FLOW/LEVEL SENSING (underwater, industrial flow/level/distance), ACTUATORS (precision positioning, fuel injectors, motors, haptics), FINGERPRINT/GESTURE (ultrasonic fingerprint sensors under phone screens, gesture/proximity), ENERGY HARVESTING (harvesting vibration energy), and the SYSTEM (the complete imaging/sensing system and cost); application/system methods are core, high-value, DISTINCTIVE IP, §101-resilient (MEDICAL ULTRASOUND (esp. handheld/on-a-chip), sonar/flow/level sensing, actuators, and fingerprint/gesture are core value, since ultrasound imaging — and the shift to compact PMUT-based point-of-care/on-a-chip ultrasound — is where the biggest value lies). ULTRASOUND-IMAGING PATENTS: piezoelectric/PMUT arrays for diagnostic ultrasound imaging; ultrasound-imaging methods are high-value IP, §101-resilient (medical ultrasound is the flagship application). ULTRASOUND-ON-CHIP PATENTS: PMUT-on-CMOS integrated whole-probe ultrasound; ultrasound-on-chip methods are high-value IP, §101-resilient (ultrasound-on-a-chip (Butterfly) is the transformative compact/low-cost shift). Array/integration, application/system, ultrasound-imaging, and ultrasound-on-chip are the highest-value IP because phased/2D arrays and the ultrasound/sensing applications (especially compact ultrasound-on-a-chip) turn the transducer into a valuable imaging and sensing device.

Piezoelectric transducer startup IP strategy must navigate the §101-resilient-materials-MEMS-and-device-are-the-strength (piezoelectric-transducer IP is materials/MEMS/device IP — composition-of-matter MATERIALS, transducers, and arrays are PATENTABLE and strongly §101-RESILIENT — so material, transducer, array, and application claims are strong (a key advantage)), the PMUTs-and-ultrasound-on-a-chip-are-the-transformative-frontier-and-IP (PMUTs (piezoelectric micromachined ultrasonic transducers integrated on silicon/CMOS) are transforming ultrasound from bulky expensive probes into COMPACT, LOW-COST, ON-A-CHIP devices (e.g. Butterfly Network's whole-body probe) — so PMUT/ultrasound-on-chip IP is the most distinctive and valuable, since it's the frontier disrupting medical ultrasound and enabling new sensing (fingerprint/gesture)), the lead-free-piezoelectrics-are-a-strategic-materials-opportunity (most high-performance piezoelectrics contain TOXIC LEAD (PZT), and environmental/regulatory pressure (RoHS exemptions) drives LEAD-FREE alternatives — so lead-free piezoelectric material IP (and CMOS-compatible AlN/ScAlN for MEMS) is a strategic opportunity, especially as performance improves), the application-focus-decides-the-product (piezoelectric transducers serve very different applications — medical ULTRASOUND imaging, FINGERPRINT/gesture sensing, SONAR, industrial sensing, actuators, energy harvesting — with different requirements — so a startup should focus an application (and the transducer/array/material for it), since the value is in the solved application), the medical-ultrasound-is-high-value-but-regulated-and-incumbent (MEDICAL ultrasound is high-value but heavily REGULATED (FDA) and served by entrenched imaging incumbents (GE, Philips, Siemens, plus Butterfly/Exo for handheld) — so a startup needs strong differentiation (PMUT/on-chip, image quality, cost) and must navigate the medical-regulatory path), the cmos-integration-and-density-enable-the-on-chip-revolution (integrating the transducer/PMUT directly with CMOS electronics (and high element DENSITY) enables ultrasound-on-a-chip and high-channel arrays — so CMOS-integration/density IP is high-value, since it's the enabler of compact, capable devices), the consumer-sensing-fingerprint-gesture-is-a-large-adjacent-market (ULTRASONIC FINGERPRINT sensors (under phone screens) and gesture/proximity sensing are large CONSUMER markets for piezoelectric MEMS — so a startup may target consumer sensing, a high-volume adjacent market), the 2D-arrays-for-3D-imaging-are-a-hard-high-value-capability (2D ARRAYS (for 3D/volumetric imaging) with their electronics integration are a hard, high-value capability — so 2D-array/integration IP is high-value), the incumbent-and-FTO (Murata, TDK (piezoelectric components), Butterfly Network/Exo (ultrasound-on-chip), GE/Philips/Siemens (ultrasound), Qualcomm/Fingerprint Cards (fingerprint), plus academia have significant IP — so a startup needs a genuinely novel material/transducer/array/application edge, and FTO is significant), the demonstrated-performance-cost-and-application-fit-decide (piezoelectric transducers are proven by demonstrated PERFORMANCE (sensitivity, frequency, bandwidth, image quality), COST, reliability, and application fit — so demonstrated, application-validated performance is decisive, more than patents alone), and a landscape where material, transducer, array, and application are the durable assets; understand that PMUTs/ultrasound-on-a-chip is the transformative frontier, so the durable startup IP is in the piezoelectric material (incl. lead-free), PMUTs/transducers, arrays/CMOS-integration, and a focused application — with PMUT/on-chip integration, lead-free materials, and a clear application often the real moat, and that §101-resilient materials/MEMS IP, demonstrated performance/cost, application fit, and FTO matter as much as patents; identify whitespace in PMUTs, lead-free materials, CMOS integration, and applications. PIEZOELECTRIC TRANSDUCER STARTUP IP STRATEGY: MATERIAL/PIEZO, TRANSDUCER/MEMS, ARRAY/INTEGRATION, AND APPLICATION/SYSTEM ARE THE IP: patent materials, transducers, arrays, and applications — materials/MEMS/device claims (§101-resilient); §101-RESILIENT-MATERIALS-MEMS-AND-DEVICE-ARE-THE-STRENGTH: materials/MEMS/device IP — composition-of-matter MATERIALS/transducers/arrays PATENTABLE + strongly §101-RESILIENT (material/transducer/array/application claims strong — a key advantage); PMUTs-AND-ULTRASOUND-ON-A-CHIP-ARE-THE-TRANSFORMATIVE-FRONTIER-AND-IP: PMUTs (piezoelectric micromachined ultrasonic transducers on silicon/CMOS) transforming ultrasound from bulky expensive probes into COMPACT LOW-COST ON-A-CHIP devices (Butterfly) — PMUT/ultrasound-on-chip IP the most distinctive + valuable (the frontier disrupting medical ultrasound + enabling new sensing — fingerprint/gesture); LEAD-FREE-PIEZOELECTRICS-ARE-A-STRATEGIC-MATERIALS-OPPORTUNITY: most high-performance piezoelectrics contain TOXIC LEAD (PZT) + environmental/regulatory pressure (RoHS) drives LEAD-FREE — lead-free piezoelectric material IP (+ CMOS-compatible AlN/ScAlN for MEMS) a strategic opportunity (esp. as performance improves); APPLICATION-FOCUS-DECIDES-THE-PRODUCT: very different applications — medical ULTRASOUND/FINGERPRINT-gesture/SONAR/industrial-sensing/actuators/energy-harvesting — different requirements — focus an application (+ the transducer/array/material for it); MEDICAL-ULTRASOUND-IS-HIGH-VALUE-BUT-REGULATED-AND-INCUMBENT: MEDICAL ultrasound high-value but heavily REGULATED (FDA) + entrenched incumbents (GE/Philips/Siemens + Butterfly/Exo handheld) — need strong differentiation (PMUT/on-chip/image-quality/cost) + navigate the medical-regulatory path; CMOS-INTEGRATION-AND-DENSITY-ENABLE-THE-ON-CHIP-REVOLUTION: integrating the transducer/PMUT directly with CMOS (+ high element DENSITY) enables ultrasound-on-a-chip + high-channel arrays — CMOS-integration/density IP high-value (the enabler of compact capable devices); CONSUMER-SENSING-FINGERPRINT-GESTURE-IS-A-LARGE-ADJACENT-MARKET: ULTRASONIC FINGERPRINT sensors (under phone screens) + gesture/proximity large CONSUMER markets for piezoelectric MEMS — target consumer sensing (high-volume adjacent market); 2D-ARRAYS-FOR-3D-IMAGING-ARE-A-HARD-HIGH-VALUE-CAPABILITY: 2D ARRAYS (3D/volumetric imaging) + their electronics integration a hard high-value capability — 2D-array/integration IP high-value; INCUMBENT-AND-FTO: Murata/TDK (piezoelectric components)/Butterfly-Exo (ultrasound-on-chip)/GE-Philips-Siemens (ultrasound)/Qualcomm-Fingerprint-Cards (fingerprint) + academia with significant IP — need a genuinely novel material/transducer/array/application edge + FTO significant; DEMONSTRATED-PERFORMANCE-COST-AND-APPLICATION-FIT-DECIDE: proven by PERFORMANCE (sensitivity/frequency/bandwidth/image quality)/COST/reliability/application fit — demonstrated application-validated performance decisive (more than patents alone); §101-RESILIENT-MATERIALS-MEMS/PERFORMANCE-COST/APPLICATION-FIT/FTO MATTER AS MUCH AS PATENTS: §101-resilient materials/MEMS IP, demonstrated performance/cost, application fit, and FTO drive value; WHEN TO PATENT: NOVEL MATERIAL/TRANSDUCER/ARRAY/APPLICATION WITH DATA: file once it shows data (material coupling/lead-free + transducer/PMUT frequency-bandwidth-sensitivity + array/CMOS integration + application performance/cost) — materials/MEMS/device claims (materials as composition-of-matter); demonstrated performance (sensitivity/bandwidth/image quality), cost, and application fit are the critical piezoelectric-transducer IP metrics; KEY FTO CHECKLIST: Murata/TDK/Butterfly-Exo/GE-Philips-Siemens/Qualcomm-Fingerprint-Cards + academia; material/piezo (PIEZOELECTRIC MATERIAL-PZT-single-crystal-PMN-PT-LEAD-FREE-KNN-BNT/coupling coefficient-performance/thin films-AlN-ScAlN-PZT/reliability — §101-resilient, composition-of-matter, the heart); transducer/MEMS (transducer ELEMENT/MEMS-PMUT-micromachined-on-silicon/frequency-bandwidth/sensitivity/CMOS-chip integration — §101-resilient, the element); lead-free-piezoelectric (a strategic opportunity); PMUT (the modern shift); array/integration (PHASED-2D ARRAYS-beamforming/electronics integration/density/matching-backing layers — §101-resilient, the array); application/system (medical ULTRASOUND imaging-handheld-on-a-chip/SONAR-flow-level/ACTUATORS/FINGERPRINT-gesture/energy harvesting/system-cost — §101-resilient, the use); ultrasound-imaging (the flagship); ultrasound-on-chip (Butterfly — the transformative shift); §101-resilient materials + MEMS + device the strength; PMUTs + ultrasound-on-a-chip the transformative frontier + IP; lead-free piezoelectrics a strategic materials opportunity; application focus decides the product; medical ultrasound high-value but regulated + incumbent; CMOS integration + density enable the on-chip revolution; consumer sensing fingerprint-gesture a large adjacent market; 2D arrays for 3D imaging a hard high-value capability; incumbent + FTO; demonstrated performance + cost + application fit decide.