Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2017040018) PIXEL RECEIVER WITH CAPACITANCE CANCELLATION FOR ULTRASONIC IMAGING APPARATUS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/040018 International Application No.: PCT/US2016/047103
Publication Date: 09.03.2017 International Filing Date: 15.08.2016
Chapter 2 Demand Filed: 03.05.2017
IPC:
G01S 7/52 (2006.01) ,G06K 9/00 (2006.01) ,G01S 15/89 (2006.01)
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7
Details of systems according to groups G01S13/, G01S15/, G01S17/127
52
of systems according to group G01S15/58
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
15
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
88
Sonar systems, specially adapted for specific applications
89
for mapping or imaging
Applicants:
QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714, US
Inventors:
MATHE, Lennart Karl-Axel; US
WADHWA, Sameer; US
XIA, Lingli; US
Agent:
FOUNTAIN, George; US
Priority Data:
14/842,82601.09.2015US
Title (EN) PIXEL RECEIVER WITH CAPACITANCE CANCELLATION FOR ULTRASONIC IMAGING APPARATUS
(FR) RÉCEPTEUR DE PIXEL À ANNULATION DE CAPACITÉ DESTINÉ À UN APPAREIL D'IMAGERIE ULTRASONORE
Abstract:
(EN) An apparatus, such as a pixel sensor for an ultrasonic imaging apparatus, is disclosed. The apparatus includes a first metallization layer coupled to a piezoelectric layer, wherein a first voltage is formed at the first metallization layer in response to an ultrasonic wave reflecting off an item-to-be-imaged (e.g., a user's fingerprint) and propagating through the piezoelectric layer, and wherein the first metallization layer is situated above a substrate; a second metallization layer situated between the first metallization layer and the substrate; and a device configured to apply a second voltage to the second metallization layer to reduce a parasitic capacitance between the first metallization layer and the substrate.
(FR) L'invention concerne un appareil, tel qu'un capteur de pixel pour un appareil d'imagerie ultrasonore. L'appareil comprend une première couche de métallisation couplée à une couche piézo-électrique, une première tension étant formée au niveau de la première couche de métallisation en réponse à une onde ultrasonore réfléchie par un objet à imager, (par exemple, une empreinte digitale de l'utilisateur) et se propageant à travers la couche piézoélectrique, et la première couche de métallisation étant située au-dessus d'un substrat ; une seconde couche de métallisation située entre la première couche de métallisation et le substrat ; et un dispositif configuré pour appliquer une seconde tension à la seconde couche de métallisation pour réduire une capacité parasite entre la première couche de métallisation et le substrat.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)