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1. (WO2015106183) TEMPERATURE COMPENSATING TRANSPARENT FORCE SENSOR HAVING A COMPLIANT LAYER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2015/106183 International Application No.: PCT/US2015/010969
Publication Date: 16.07.2015 International Filing Date: 12.01.2015
IPC:
G01L 1/18 (2006.01) ,G01L 1/20 (2006.01)
G PHYSICS
01
MEASURING; TESTING
L
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
1
Measuring force or stress, in general
18
using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
G PHYSICS
01
MEASURING; TESTING
L
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
1
Measuring force or stress, in general
20
by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
Applicants:
APPLE INC. [US/US]; One Infinite Loop Cupertino, California 95014, US
Inventors:
FILIZ, Sinan; US
PEDDER, James E.; US
OGATA, Charley T.; US
SMITH, John Stephen; US
PATEL, Dhaval Chandrakant; US
CHOI, Shin John; US
HUPPI, Brian Q.; US
BUTLER, Christopher J.; US
GRUNTHANER, Martin P.; US
Agent:
HEMENWAY, S. Craig; US
Priority Data:
61/926,90513.01.2014US
61/937,46507.02.2014US
61/939,25712.02.2014US
61/942,02119.02.2014US
62/024,56615.07.2014US
Title (EN) TEMPERATURE COMPENSATING TRANSPARENT FORCE SENSOR HAVING A COMPLIANT LAYER
(FR) CAPTEUR DE FORCE TRANSPARENT À COMPENSATION THERMIQUE AYANT UNE COUCHE SOUPLE
Abstract:
(EN) An optically transparent force sensor that may compensate for environmental effects, including, for example, variations in temperature of the device or the surroundings. In some examples, two force-sensitive layers are separated by a compliant layer. The relative electrical response of the two force-sensitive layers may be used to compute an estimate of the force of a touch that reduces the effect of variations in temperature. In some examples, piezoelectric films having anisotropic strain properties are used to reduce the effects of temperature.
(FR) L'invention concerne un capteur de force optiquement transparent qui peut compenser les effets environnementaux, comprenant, par exemple, des variations de température du dispositif ou des environs. Dans certains exemples, deux couches sensibles à la force sont séparées au moyen d'une couche souple. La réponse électrique relative des deux couches sensibles à la force peut être utilisée pour calculer une estimation de la force d'une entrée tactile qui réduit l'effet des variations de température. Dans certains exemples, des films piézoélectriques ayant des propriétés de contrainte anisotrope sont utilisés pour réduire les effets de température.
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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)