US20230168138A1 - Cantilever force sensor - Google Patents
Cantilever force sensor Download PDFInfo
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- US20230168138A1 US20230168138A1 US18/162,719 US202318162719A US2023168138A1 US 20230168138 A1 US20230168138 A1 US 20230168138A1 US 202318162719 A US202318162719 A US 202318162719A US 2023168138 A1 US2023168138 A1 US 2023168138A1
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- force sensor
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- conductive contact
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 83
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims description 62
- 239000000463 material Substances 0.000 claims description 6
- 239000003989 dielectric material Substances 0.000 claims description 2
- 239000002305 electric material Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/18—Measuring force or stress, in general 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
Definitions
- the present invention relates to a force sensor, especially relates to a cantilever force sensor which can be turned on with a relatively reduced on-force so that a force sensor with higher sensitivity is created.
- FIGS. 1A ⁇ 1D shows a prior art.
- a conventional force sensor comprises a top substrate 10 and a bottom substrate 109, a top electrode 11 is configured on a bottom side of the top substrate 10.
- a bottom electrode 119 is configured on the top side of the bottom substrate 109.
- a top piezoresistive layer 12 is configured on the bottom side of the top electrode 11.
- a bottom piezoresistive layer 129 is configured on the top side of the bottom electrode 119.
- a space 16 is formed between the two piezoresistive layers 12, 129.
- a ring spacer 15 is configured between the substrates 10 and 109.
- the top electrode 11 and bottom electrode 119 are electrically connected to a circuit system 13.
- FIG. 1B shows an EE′ section view of the prior art FIG. 1A.
- FIG. 1B shows that a ring spacer 15 is configured around the force sensor.
- the ring spacer 15 resists more against a force applied from the top side of the force sensor.
- FIG. 1C shows when a force P is applied to the force sensor of FIG. 1A, the top piezoresistive layer 12 deforms downwardly in the middle portion and contacts the bottom piezoresistive layer 129, at this moment, the piezoresistive layers 12 and 129 have a total thickness of L1.
- FIG. 1D shows an electricity property for the prior art.
- FIG. 1D shows a curve for Conductance/Capacitance vs Force for FIG. 1C.
- a status when the force sensor is depressed from the top side at the moment of FIG. 1C, an On-Force starts at point P1 which is apparently greater than the zero force point. This is because the ring spacer 15 resists the force applied from the top of the force sensor.
- a disadvantage for the prior art is that an On-Force is relatively greater because the ring spacer 15 gives more resistance to the force applied from the top side. It is hopeful for a person skilled in the art to reduce the On-Force so that a force sensor with a higher sensitivity can be obtained.
- FIGS. 1 A ⁇ 1 D shows a prior art.
- FIGS. 2 A ⁇ 2 D shows a first embodiment according to the present invention.
- FIG. 3 shows the first embodiment configured in an electronic pen according to the present invention.
- FIGS. 4 A ⁇ 4 B shows a second embodiment according to the present invention.
- FIG. 5 shows a third embodiment according to the present invention.
- FIG. 6 shows a fourth embodiment according to the present invention.
- FIG. 7 shows a fifth embodiment according to the present invention.
- FIG. 8 shows a sixth embodiment according to the present invention.
- FIG. 9 shows a seventh embodiment according to the present invention.
- FIGS. 10 A ⁇ 10 B shows an eighth embodiment according to the present invention.
- FIGS. 11 A ⁇ 11 B shows a ninth embodiment according to the present invention.
- FIGS. 12 A ⁇ 12 B shows a tenth embodiment according to the present invention.
- FIGS. 13 A ⁇ 13 B shows an eleventh embodiment according to the present invention.
- FIGS. 14 A ⁇ 14 B shows a twelfth embodiment according to the present invention.
- FIG. 15 shows a thirteenth embodiment according to the present invention.
- FIG. 16 shows a fourteen embodiment according to the present invention.
- FIG. 17 shows a fifteen embodiment according to the present invention.
- FIGS. 2 A ⁇ 2 D shows a first embodiment according to the present invention.
- FIG. 2 A shows a cantilever force sensor FS with a bottom switch SW configured on the bottom side of the force sensor FS.
- the force sensor FS comprises a top stack TS, a first spacer S 1 , and a bottom stack BS in sequence.
- a first gap G 1 is configured between the top stack TS and the bottom stack BS.
- the first spacer S 1 is configured in the right side of the force sensor FS.
- the left side of the top stack TS is cantilevered from the bottom stack BS.
- the first spacer S 1 has a top end connected to the top piezo layer 22 of the top stack TS and has a bottom end connected to the bottom piezo electrode 24 of the bottom stack BS.
- the top stack TS is comprised of a top substrate 20 , a top electrode 21 , and a top piezo layer 22 in sequence.
- the bottom stack BS is comprised of a bottom piezo layer 23 , a bottom electrode 24 , and a bottom substrate 25 in sequence.
- a bottom switch SW is configured on the bottom side of the force sensor FS.
- a first conductive contact C 1 is configured on the bottom side of the bottom stack BS of the force sensor FS.
- a second conductive contact C 2 aligned with the first conductive contact C 1 , is configured on a top side of a printed circuit board 26 of the bottom switch SW.
- a second spacer S 2 is configured between the bottom substrate 25 and the printed circuit board 26 , and the second spacer S 2 is configured in the right side of the bottom switch SW.
- the bottom stack BS, the first conductive contact C 1 , the second conductive contact C 2 , and the printed circuit board 26 are configured in sequence to form the bottom switch SW.
- the delayed turn-on switch is designed for shielding the initial noise signal from the force sensor at an initial stage when it is depressed.
- the first conductive contact C 1 slightly touches the second conductive contact C 2 , however without turns on the bottom switch SW.
- the force sensor FS is depressed from the top side, the left side of the force sensor FS moves down so that the first conductive contact C 1 touches the second conductive contact C 2 firmly to turn on the bottom switch SW.
- FIG. 2 B shows an AA′ section view of FIG. 2 A according to the present invention.
- the first spacer S 1 is configured in the right side of the force sensor FS, and configured between the top stack TS and the bottom stack BS of the force sensor FS.
- FIG. 2 C shows the force sensor being depressed according to the present invention.
- the top stack TS moves down on its left side using the first spacer S 1 as a fulcrum when the force sensor FS is depressed from the top side.
- a force signal is sent to a control center (not shown) for signal processing.
- FIG. 2 D shows an electrical property for the first embodiment according to the present invention.
- FIG. 2 D shows a curve for Conductance/Capacitance vs Force for the first embodiment.
- FIG. 2 C a status when the force sensor FS is depressed from the top side, an On-Force starts at point P 2 which is extremely near to zero force point. This is because that a single side spacer S 1 is configured in the right side of the force sensor FS.
- the cantilevered top stack TS of the force sensor FS reduces On-Force.
- FIG. 3 shows the first embodiment configured in an electronic pen according to the present invention.
- FIG. 3 shows that the force sensor FS with a bottom switch SW can be configured on the bottom side of the pen tip 61 of an electronic pen to sense forces coming from the pen tip 61 when the electronic pen is writing with its pen tip 61 .
- FIGS. 4 A ⁇ 4 B shows a second embodiment according to the present invention.
- FIG. 4 A shows a modified embodiment to the first embodiment of FIG. 2 A with a different position for the first spacer S 1 .
- FIG. 4 A shows that the first spacer S 1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS.
- the spacer S 1 has a top end connected to the top substrate 20 and has a bottom end connected to the bottom substrate 25 .
- FIG. 4 B shows a BB′ section view of FIG. 4 A according to the present invention.
- the first spacer S 1 is configured in the right side of the force sensor FS, and configured between the top stack TS and the bottom stack BS.
- FIG. 5 shows a third embodiment according to the present invention.
- FIG. 5 shows a further modified embodiment to the first embodiment with a different position for the first spacer S 1 .
- the first spacer S 1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS.
- the spacer S 1 has a top end connected to the top piezo layer 22 and has a bottom end connects to the bottom substrate 25 .
- FIG. 6 shows a fourth embodiment according to the present invention.
- FIG. 6 shows a further modified embodiment to the first embodiment with a different position for the first spacer S 1 .
- the first spacer S 1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS.
- the spacer S 1 has a top end connected to the top substrate 20 and has a bottom end connected to the bottom piezo layer 23 .
- FIG. 7 shows a fifth embodiment according to the present invention.
- FIG. 7 shows a further modified embodiment of the force sensor FS with a modified bottom switch configured in an electronic pen.
- the force sensor FS with a bottom switch SW can be configured in the bottom side of the pen tip 61 of an electronic pen to sense forces coming from the pen tip 61 when the electronic pen is writing with its pen tip 61 .
- the first conductive contact C 1 under the force sensor FS is configured slightly apart from the second conductive contact C 2 .
- the delayed turn-on switch is designed for shielding the initial noise signal from the force sensor FS at an initial stage when the force sensor FS is depressed.
- FIG. 8 shows a sixth embodiment according to the present invention.
- FIG. 8 shows a further modified embodiment to the first embodiment.
- a single piezo layer, a top piezo layer 22 is configured in the force sensor FS.
- the top stack TS is comprised of a top substrate 20 , a top electrode 21 , and a top piezo layer 22 in sequence.
- the bottom stack BS is comprised of a bottom electrode 24 and a bottom substrate 25 in sequence and without having any piezo layer configured in the bottom stack BS.
- the first spacer S 1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS.
- a first gap G 1 is configured between the top stack TS and the bottom stack BS.
- the first spacer S 1 has a top end connected to the top piezo layer 22 of the top stack TS and has a bottom end connected to the bottom electrode 24 of the bottom stack BS.
- FIG. 9 shows a seventh embodiment according to the present invention.
- FIG. 9 shows a modified embodiment to the first embodiment.
- a single piezo layer, a bottom piezo layer 23 is configured in the force sensor FS.
- the top stack TS is comprised of a top substrate 20 , and a top electrode 21 in sequence.
- the bottom stack BS is comprised of a bottom piezo layer 23 , a bottom electrode 24 , and a bottom substrate 25 in sequence.
- the first spacer S 1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS.
- a first gap G 1 is configured between the top stack TS and the bottom stack BS.
- the first spacer S 1 has a top end connected to the top electrode 21 of the top stack TS and has a bottom end connected to the bottom piezo layer 23 of the bottom stack BS.
- FIGS. 10 A ⁇ 10 B shows an eighth embodiment according to the present invention.
- FIG. 10 A shows a modified embodiment to the first embodiment.
- FIG. 10 A shows a front view of the modified embodiment where a single piezo layer, a bottom piezo layer 23 , is configured in the bottom stack BS of the force sensor FS.
- a pair of coplanar electrodes 241 , 242 is configured on the bottom side of the bottom piezo layer 23
- the bottom substrate 25 is configured on the bottom side of the coplanar electrodes 241 , 242 .
- the top stack TS is comprised of a top substrate 20 , and an auxiliary metal 21 B in sequence.
- the auxiliary metal 21 B is an auxiliary metal for electricity conductance when the force sensor FS is depressed.
- the bottom stack BS is comprised of a piezo layer 23 , a pair of coplanar electrodes 241 , 242 , and a bottom substrate 25 in sequence.
- FIG. 10 B shows a side view of FIG. 10 A .
- the first spacer S 1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS.
- a first gap G 1 is configured between the top stack TS and the bottom stack BS.
- the first spacer S 1 has a top end connected to the auxiliary metal 21 B of the top stack TS and has a bottom end connected to the bottom piezo layer 23 of the bottom stack BS.
- FIGS. 11 A ⁇ 11 B shows a ninth embodiment according to the present invention.
- FIG. 11 A shows a modified embodiment to the first embodiment.
- FIG. 11 A shows a front view of the modified embodiment where a single piezo layer, a top piezo layer 22 , is configured in the force sensor FS.
- a pair of coplanar electrodes 241 , 242 is configured on the top side of the bottom substrate 25 of bottom stack BS in the force sensor FS.
- the top stack TS is comprised of a top substrate 20 and a top piezo layer 22 .
- the bottom stack BS is comprised of a pair of coplanar electrodes 241 , 242 , and a bottom substrate 25 in sequence.
- FIG. 11 B shows a side view of FIG. 11 A .
- the first spacer S 1 is configured between the top stack TS and the bottom stack BS of the force sensor FS.
- a first gap G 1 is configured between the top stack TS and the bottom stack BS.
- the first spacer S 1 has a top end connected to the top piezo layer 22 of the top stack TS and has a bottom end connected to the pair of coplanar electrodes 241 , 242 of the bottom stack BS.
- FIGS. 12 A ⁇ 12 B shows a tenth embodiment according to the present invention.
- FIG. 12 A shows a modified embodiment to the first embodiment.
- FIG. 12 A shows a front view of the modified embodiment where a single piezo layer, a top piezo layer 22 , is configured in the force sensor FS.
- a pair of coplanar electrodes 241 , 242 is configured on the top side of the bottom substrate 25 of bottom stack BS in the force sensor FS.
- the top stack TS is comprised of a top substrate 20 , an auxiliary metal 21 B, and a top piezo layer 22 in sequence.
- the auxiliary metal 21 B is an auxiliary metal for electricity conductance when the force sensor FS is depressed.
- the bottom stack BS is comprised of a pair of coplanar electrodes 241 , 242 , and a bottom substrate 25 in sequence.
- FIG. 12 B shows a side view of FIG. 12 A .
- the first spacer S 1 is configured between the top stack TS and the bottom stack BS of the force sensor FS.
- a first gap G 1 is configured between the top stack TS and the bottom stack BS.
- the first spacer S 1 has a top end connected to the top piezo layer 22 of the top stack TS and has a bottom end connected to the pair of coplanar electrodes 241 , 242 of the bottom stack BS.
- FIGS. 13 A ⁇ 43 B shows a tenth embodiment according to the present invention.
- FIG. 13 A shows a modified embodiment of the force sensor FS.
- a printed circuit board 26 is configured on the bottom side of the force sensor FS.
- the top stack TS is comprised of a top substrate 20 , a top electrode 21 , and a top piezo layer 22 in sequence.
- the bottom stack BS is comprised of a bottom piezo layer 23 and a printed circuit board 26 in sequence.
- a conductive contact C 3 is configured on the top side of the printed circuit board 26 .
- the conductive contact C 3 is covered by the bottom piezo layer 23 .
- a third spacer S 3 is configured between the top stack TS and the bottom stack BS.
- a fourth gap G 4 is configured between the top stack TS and the bottom stack BS.
- the third spacer S 3 is configured in the right side of the force sensor FS.
- the third spacer S 3 and has a top end connected to the top piezo layer 22 of the top stack TS, and has a bottom end connected to the bottom piezo layer 23 of the bottom stack BS.
- FIG. 13 B shows a depressed status of the embodiment of FIG. 12 A .
- FIG. 13 B shows that the left side of the top stack TS is cantilevered from the bottom stack BS.
- the force sensor FS is depressed from the top side, the left side of the top stack TS moves down using the third spacer S 3 as a fulcrum.
- FIGS. 14 A ⁇ 14 B shows an eleventh embodiment according to the present invention.
- FIG. 14 A shows a modified embodiment to the embodiment of FIG. 13 A with a different position of the third spacer S 3 .
- the third spacer S 3 is configured between the top stack TS and the bottom stack BS.
- a fourth gap G 4 is configured between the top stack TS and the bottom stack BS.
- the third spacer S 3 is configured in the right side of the force sensor FS.
- the third spacer S 3 and has a top end connected to the top substrate 20 of the top stack TS, and has a bottom end connected to the printed board 26 of the bottom stack BS.
- FIG. 14 B shows a CC′ section view of the embodiment FIG. 14 A .
- FIG. 14 B shows that the third spacer S 3 is configured in the right side of the force sensor FS.
- FIG. 15 shows a twelfth embodiment according to the present invention.
- FIG. 15 shows a modified embodiment to the embodiment of FIG. 13 A with a different position of the third spacer S 3 .
- the third spacer S 3 is configured between the top stack TS and the bottom stack BS of the force sensor FS.
- the four gap G 4 is configured between the top stack TS and the bottom stack BS.
- the third spacer S 3 has a top end connected to the top piezo layer 22 and has a bottom end connected to the printed circuit board 26 .
- the top stack TS is cantilevered from the bottom stack BS.
- FIG. 16 shows a thirteenth embodiment according to the present invention.
- FIG. 16 shows a modified embodiment to the embodiment of FIG. 13 A with a different position of the third spacer S 3 .
- the third spacer S 3 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS.
- the four gap G 4 is configured between the top stack TS and the bottom stack BS.
- the third spacer S 3 has a top end connected to the top substrate 20 of the top stack TS and has a bottom end connected to the bottom piezo layer 23 of the bottom stack BS.
- the top stack TS is cantilevered from the bottom stack BS.
- FIG. 17 shows a fourteenth embodiment according to the present invention.
- FIG. 17 shows that a force sensor 30 is configured with a bottom switch SW.
- a first conductive contact C 1 is configured on the bottom side of the force sensor 30 .
- a second conductive contact C 2 aligned with the first conductive contact C 1 , is configured on a top side of a printed circuit board 26 .
- the first conductive contact C 1 is configured in one of the two states:
- a fourth spacer S 4 is configured between the force sensor 30 and the printed circuit board 26 and configured in the right side of the force sensor 30 .
- the left side of the force sensor 30 moves down so that the first conductive contact C 1 touches the second conductive contact C 2 firmly to turn on the bottom switch SW.
- the piezo layers 22 , 23 disclosed in this invention is made of a material selected from the group consisting of piezo-electric material, triboelectric material, resistive material, and dielectric material
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Abstract
A cantilever force sensor with relatively lower On-Force is disclosed, which comprises a top stack, a bottom stack, and a spacer. The first spacer is configured between the top stack and the bottom stack and configured in a first side of the force sensor. A second side, opposite to the first side, of the top stack, is cantilevered from the bottom stack. When the force sensor is depressed from the top side, the second side of the top stack moves down using the first spacer as a fulcrum. Since the cantilevered side can be easily depressed down so that the On-Force for the force sensor is reduced and hence a force sensor with a relatively higher sensitivity is created.
Description
- The instant application is a continuation application of U.S. application Ser. No. 17/152,668, filed Jan. 19, 2021, which is incorporated by reference herein in its entirety.
- The present invention relates to a force sensor, especially relates to a cantilever force sensor which can be turned on with a relatively reduced on-force so that a force sensor with higher sensitivity is created.
- FIGS. 1A˜1D shows a prior art.
- Referring to FIG. 1A as disclosed in U.S. Pat. No. 8,371,174, a conventional force sensor comprises a
top substrate 10 and abottom substrate 109, atop electrode 11 is configured on a bottom side of thetop substrate 10. Abottom electrode 119 is configured on the top side of thebottom substrate 109. A toppiezoresistive layer 12 is configured on the bottom side of thetop electrode 11. A bottompiezoresistive layer 129 is configured on the top side of thebottom electrode 119. Aspace 16 is formed between the twopiezoresistive layers ring spacer 15 is configured between thesubstrates top electrode 11 andbottom electrode 119 are electrically connected to acircuit system 13. - FIG. 1B shows an EE′ section view of the prior art FIG. 1A.
- FIG. 1B shows that a
ring spacer 15 is configured around the force sensor. Thering spacer 15 resists more against a force applied from the top side of the force sensor. - FIG. 1C shows when a force P is applied to the force sensor of FIG. 1A, the top
piezoresistive layer 12 deforms downwardly in the middle portion and contacts the bottompiezoresistive layer 129, at this moment, thepiezoresistive layers - FIG. 1D shows an electricity property for the prior art.
- FIG. 1D shows a curve for Conductance/Capacitance vs Force for FIG. 1C. Referring to FIG. 1D a status when the force sensor is depressed from the top side, at the moment of FIG. 1C, an On-Force starts at point P1 which is apparently greater than the zero force point. This is because the
ring spacer 15 resists the force applied from the top of the force sensor. - A disadvantage for the prior art is that an On-Force is relatively greater because the
ring spacer 15 gives more resistance to the force applied from the top side. It is hopeful for a person skilled in the art to reduce the On-Force so that a force sensor with a higher sensitivity can be obtained. -
FIGS. 1A ˜1D shows a prior art. -
FIGS. 2A ˜2D shows a first embodiment according to the present invention. -
FIG. 3 shows the first embodiment configured in an electronic pen according to the present invention. -
FIGS. 4A ˜4B shows a second embodiment according to the present invention. -
FIG. 5 shows a third embodiment according to the present invention. -
FIG. 6 shows a fourth embodiment according to the present invention. -
FIG. 7 shows a fifth embodiment according to the present invention. -
FIG. 8 shows a sixth embodiment according to the present invention. -
FIG. 9 shows a seventh embodiment according to the present invention. -
FIGS. 10A ˜10B shows an eighth embodiment according to the present invention. -
FIGS. 11A ˜11B shows a ninth embodiment according to the present invention. -
FIGS. 12A ˜12B shows a tenth embodiment according to the present invention. -
FIGS. 13A ˜13B shows an eleventh embodiment according to the present invention. -
FIGS. 14A ˜14B shows a twelfth embodiment according to the present invention. -
FIG. 15 shows a thirteenth embodiment according to the present invention. -
FIG. 16 shows a fourteen embodiment according to the present invention. -
FIG. 17 shows a fifteen embodiment according to the present invention. -
FIGS. 2A ˜2D shows a first embodiment according to the present invention. -
FIG. 2A shows a cantilever force sensor FS with a bottom switch SW configured on the bottom side of the force sensor FS. The force sensor FS comprises a top stack TS, a first spacer S1, and a bottom stack BS in sequence. A first gap G1 is configured between the top stack TS and the bottom stack BS. The first spacer S1 is configured in the right side of the force sensor FS. The left side of the top stack TS is cantilevered from the bottom stack BS. - When the force sensor FS is depressed from the top side, the left side of the top stack TS moves down using the first spacer S1 as a fulcrum to turn on the force sensor FS. The first spacer S1 has a top end connected to the top
piezo layer 22 of the top stack TS and has a bottom end connected to the bottompiezo electrode 24 of the bottom stack BS. - The top stack TS is comprised of a
top substrate 20, atop electrode 21, and a toppiezo layer 22 in sequence. The bottom stack BS is comprised of a bottompiezo layer 23, abottom electrode 24, and abottom substrate 25 in sequence. - A bottom switch SW is configured on the bottom side of the force sensor FS. A first conductive contact C1 is configured on the bottom side of the bottom stack BS of the force sensor FS. A second conductive contact C2, aligned with the first conductive contact C1, is configured on a top side of a printed
circuit board 26 of the bottom switch SW. A second spacer S2 is configured between thebottom substrate 25 and the printedcircuit board 26, and the second spacer S2 is configured in the right side of the bottom switch SW. The bottom stack BS, the first conductive contact C1, the second conductive contact C2, and the printedcircuit board 26 are configured in sequence to form the bottom switch SW. The delayed turn-on switch is designed for shielding the initial noise signal from the force sensor at an initial stage when it is depressed. - The first conductive contact C1 slightly touches the second conductive contact C2, however without turns on the bottom switch SW. When the force sensor FS is depressed from the top side, the left side of the force sensor FS moves down so that the first conductive contact C1 touches the second conductive contact C2 firmly to turn on the bottom switch SW.
-
FIG. 2B shows an AA′ section view ofFIG. 2A according to the present invention. The first spacer S1 is configured in the right side of the force sensor FS, and configured between the top stack TS and the bottom stack BS of the force sensor FS. -
FIG. 2C shows the force sensor being depressed according to the present invention. The top stack TS moves down on its left side using the first spacer S1 as a fulcrum when the force sensor FS is depressed from the top side. After the top stack TS touches the bottom stack BS, a force signal is sent to a control center (not shown) for signal processing. -
FIG. 2D shows an electrical property for the first embodiment according to the present invention.FIG. 2D shows a curve for Conductance/Capacitance vs Force for the first embodiment. Referring toFIG. 2C a status when the force sensor FS is depressed from the top side, an On-Force starts at point P2 which is extremely near to zero force point. This is because that a single side spacer S1 is configured in the right side of the force sensor FS. The cantilevered top stack TS of the force sensor FS reduces On-Force. -
FIG. 3 shows the first embodiment configured in an electronic pen according to the present invention. -
FIG. 3 shows that the force sensor FS with a bottom switch SW can be configured on the bottom side of thepen tip 61 of an electronic pen to sense forces coming from thepen tip 61 when the electronic pen is writing with itspen tip 61. -
FIGS. 4A ˜4B shows a second embodiment according to the present invention. -
FIG. 4A shows a modified embodiment to the first embodiment ofFIG. 2A with a different position for the first spacer S1.FIG. 4A shows that the first spacer S1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS. The spacer S1 has a top end connected to thetop substrate 20 and has a bottom end connected to thebottom substrate 25. -
FIG. 4B shows a BB′ section view ofFIG. 4A according to the present invention. The first spacer S1 is configured in the right side of the force sensor FS, and configured between the top stack TS and the bottom stack BS. -
FIG. 5 shows a third embodiment according to the present invention. -
FIG. 5 shows a further modified embodiment to the first embodiment with a different position for the first spacer S1. The first spacer S1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS. The spacer S1 has a top end connected to the toppiezo layer 22 and has a bottom end connects to thebottom substrate 25. -
FIG. 6 shows a fourth embodiment according to the present invention. -
FIG. 6 shows a further modified embodiment to the first embodiment with a different position for thefirst spacer S 1. The first spacer S1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS. The spacer S1 has a top end connected to thetop substrate 20 and has a bottom end connected to the bottompiezo layer 23. -
FIG. 7 shows a fifth embodiment according to the present invention. -
FIG. 7 shows a further modified embodiment of the force sensor FS with a modified bottom switch configured in an electronic pen. The force sensor FS with a bottom switch SW can be configured in the bottom side of thepen tip 61 of an electronic pen to sense forces coming from thepen tip 61 when the electronic pen is writing with itspen tip 61. The first conductive contact C1 under the force sensor FS is configured slightly apart from the second conductive contact C2. When the force sensor FS is depressed from the top side, the left side of the bottom stack BS moves down so that the first conductive contact C1 touches the second conductive contact C2 firmly to turn on the bottom switch SW. The delayed turn-on switch is designed for shielding the initial noise signal from the force sensor FS at an initial stage when the force sensor FS is depressed. -
FIG. 8 shows a sixth embodiment according to the present invention. -
FIG. 8 shows a further modified embodiment to the first embodiment. A single piezo layer, a toppiezo layer 22, is configured in the force sensor FS. The top stack TS is comprised of atop substrate 20, atop electrode 21, and a toppiezo layer 22 in sequence. The bottom stack BS is comprised of abottom electrode 24 and abottom substrate 25 in sequence and without having any piezo layer configured in the bottom stack BS. - The first spacer S1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS. A first gap G1 is configured between the top stack TS and the bottom stack BS. The first spacer S1 has a top end connected to the top
piezo layer 22 of the top stack TS and has a bottom end connected to thebottom electrode 24 of the bottom stack BS. -
FIG. 9 shows a seventh embodiment according to the present invention. -
FIG. 9 shows a modified embodiment to the first embodiment. A single piezo layer, a bottompiezo layer 23, is configured in the force sensor FS. The top stack TS is comprised of atop substrate 20, and atop electrode 21 in sequence. The bottom stack BS is comprised of a bottompiezo layer 23, abottom electrode 24, and abottom substrate 25 in sequence. - The first spacer S1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS. A first gap G1 is configured between the top stack TS and the bottom stack BS. The first spacer S1 has a top end connected to the
top electrode 21 of the top stack TS and has a bottom end connected to the bottompiezo layer 23 of the bottom stack BS. -
FIGS. 10A ˜10B shows an eighth embodiment according to the present invention. -
FIG. 10A shows a modified embodiment to the first embodiment.FIG. 10A shows a front view of the modified embodiment where a single piezo layer, a bottompiezo layer 23, is configured in the bottom stack BS of the force sensor FS. A pair ofcoplanar electrodes piezo layer 23, and thebottom substrate 25 is configured on the bottom side of thecoplanar electrodes - The top stack TS is comprised of a
top substrate 20, and anauxiliary metal 21B in sequence. Theauxiliary metal 21B is an auxiliary metal for electricity conductance when the force sensor FS is depressed. The bottom stack BS is comprised of apiezo layer 23, a pair ofcoplanar electrodes bottom substrate 25 in sequence. -
FIG. 10B shows a side view ofFIG. 10A . The first spacer S1 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS. A first gap G1 is configured between the top stack TS and the bottom stack BS. The first spacer S1 has a top end connected to theauxiliary metal 21B of the top stack TS and has a bottom end connected to the bottompiezo layer 23 of the bottom stack BS. -
FIGS. 11A ˜11B shows a ninth embodiment according to the present invention. -
FIG. 11A shows a modified embodiment to the first embodiment.FIG. 11A shows a front view of the modified embodiment where a single piezo layer, a toppiezo layer 22, is configured in the force sensor FS. A pair ofcoplanar electrodes bottom substrate 25 of bottom stack BS in the force sensor FS. - The top stack TS is comprised of a
top substrate 20 and a toppiezo layer 22. The bottom stack BS is comprised of a pair ofcoplanar electrodes bottom substrate 25 in sequence. -
FIG. 11B shows a side view ofFIG. 11A . The first spacer S1 is configured between the top stack TS and the bottom stack BS of the force sensor FS. A first gap G1 is configured between the top stack TS and the bottom stack BS. The first spacer S1 has a top end connected to the toppiezo layer 22 of the top stack TS and has a bottom end connected to the pair ofcoplanar electrodes -
FIGS. 12A ˜12B shows a tenth embodiment according to the present invention. -
FIG. 12A shows a modified embodiment to the first embodiment.FIG. 12A shows a front view of the modified embodiment where a single piezo layer, a toppiezo layer 22, is configured in the force sensor FS. A pair ofcoplanar electrodes bottom substrate 25 of bottom stack BS in the force sensor FS. - The top stack TS is comprised of a
top substrate 20, anauxiliary metal 21B, and a toppiezo layer 22 in sequence. Theauxiliary metal 21B is an auxiliary metal for electricity conductance when the force sensor FS is depressed. The bottom stack BS is comprised of a pair ofcoplanar electrodes bottom substrate 25 in sequence. -
FIG. 12B shows a side view ofFIG. 12A . The first spacer S1 is configured between the top stack TS and the bottom stack BS of the force sensor FS. A first gap G1 is configured between the top stack TS and the bottom stack BS. The first spacer S1 has a top end connected to the toppiezo layer 22 of the top stack TS and has a bottom end connected to the pair ofcoplanar electrodes -
FIGS. 13A ˜43B shows a tenth embodiment according to the present invention. -
FIG. 13A shows a modified embodiment of the force sensor FS. A printedcircuit board 26 is configured on the bottom side of the force sensor FS. The top stack TS is comprised of atop substrate 20, atop electrode 21, and a toppiezo layer 22 in sequence. The bottom stack BS is comprised of a bottompiezo layer 23 and a printedcircuit board 26 in sequence. A conductive contact C3 is configured on the top side of the printedcircuit board 26. The conductive contact C3 is covered by the bottompiezo layer 23. - A third spacer S3 is configured between the top stack TS and the bottom stack BS. A fourth gap G4 is configured between the top stack TS and the bottom stack BS. The third spacer S3 is configured in the right side of the force sensor FS. The third spacer S3 and has a top end connected to the top
piezo layer 22 of the top stack TS, and has a bottom end connected to the bottompiezo layer 23 of the bottom stack BS. -
FIG. 13B shows a depressed status of the embodiment ofFIG. 12A . -
FIG. 13B shows that the left side of the top stack TS is cantilevered from the bottom stack BS. When the force sensor FS is depressed from the top side, the left side of the top stack TS moves down using the third spacer S3 as a fulcrum. -
FIGS. 14A ˜14B shows an eleventh embodiment according to the present invention. -
FIG. 14A shows a modified embodiment to the embodiment ofFIG. 13A with a different position of the third spacer S3. The third spacer S3 is configured between the top stack TS and the bottom stack BS. A fourth gap G4 is configured between the top stack TS and the bottom stack BS. The third spacer S3 is configured in the right side of the force sensor FS. The third spacer S3 and has a top end connected to thetop substrate 20 of the top stack TS, and has a bottom end connected to the printedboard 26 of the bottom stack BS. -
FIG. 14B shows a CC′ section view of the embodimentFIG. 14A . -
FIG. 14B shows that the third spacer S3 is configured in the right side of the force sensor FS. -
FIG. 15 shows a twelfth embodiment according to the present invention. -
FIG. 15 shows a modified embodiment to the embodiment ofFIG. 13A with a different position of the third spacer S3. The third spacer S3 is configured between the top stack TS and the bottom stack BS of the force sensor FS. The four gap G4 is configured between the top stack TS and the bottom stack BS. The third spacer S3 has a top end connected to the toppiezo layer 22 and has a bottom end connected to the printedcircuit board 26. The top stack TS is cantilevered from the bottom stack BS. -
FIG. 16 shows a thirteenth embodiment according to the present invention. -
FIG. 16 shows a modified embodiment to the embodiment ofFIG. 13A with a different position of the third spacer S3. The third spacer S3 is configured between the top stack TS and the bottom stack BS and configured in the right side of the force sensor FS. The four gap G4 is configured between the top stack TS and the bottom stack BS. The third spacer S3 has a top end connected to thetop substrate 20 of the top stack TS and has a bottom end connected to the bottompiezo layer 23 of the bottom stack BS. The top stack TS is cantilevered from the bottom stack BS. -
FIG. 17 shows a fourteenth embodiment according to the present invention. -
FIG. 17 shows that aforce sensor 30 is configured with a bottom switch SW. A first conductive contact C1 is configured on the bottom side of theforce sensor 30. A second conductive contact C2, aligned with the first conductive contact C1, is configured on a top side of a printedcircuit board 26. Theforce sensor 30 with the first conductive contact and the printedcircuit board 26 with the second conductive contact C2 forming the bottom switch SW. The first conductive contact C1 is configured in one of the two states: - (1) slightly touching the second conductive contact C2 without turning on the bottom switch SW, and
- (2) slightly apart from touching the second conductive contact, and
- a fourth spacer S4 is configured between the
force sensor 30 and the printedcircuit board 26 and configured in the right side of theforce sensor 30. When theforce sensor 30 is depressed from the top side, the left side of theforce sensor 30 moves down so that the first conductive contact C1 touches the second conductive contact C2 firmly to turn on the bottom switch SW. - The
piezo layers - While several embodiments have been described by way of example, it will be apparent to those skilled in the art that various modifications may be configured without departs from the spirit of the present invention. Such modifications are all within the scope of the present invention, as defined by the appended claims.
-
- 20 top substrate
- 21 top electrode
- 21B auxiliary metal
- 22 top piezo layer
- 23 bottom piezo layer
- 24 bottom electrode
- 241, 242 coplanar electrodes
- 25 bottom substrate
- 26 printed circuit board
- 30 force sensor
- 61 pen tip
- G1 first gap
- G2 second gap
- G3 third gap
- G4 fourth gap
- C1 first conductive contact
- C2 second conductive contact
- C3 third conductive contact
- S1 first spacer
- S2 second spacer
- S3 third spacer
- S4 fourth spacer
- SW switch
Claims (20)
1. A cantilever force sensor, comprising a top stack, a bottom stack, a first spacer, a bottom switch, and a second spacer, wherein
the first spacer is configured, in a thickness direction of the force sensor, between the top stack and the bottom stack, and is configured in a first side of the force sensor,
a second side, opposite to the first side, of the top stack, is cantilevered from the bottom stack,
in response to the top stack being depressed toward the bottom stack, the second side of the top stack moves down using the first spacer as a fulcrum,
one of the top stack and the bottom stack is a first stack,
another of the top stack and the bottom stack is a second stack,
the first stack comprises:
a first substrate,
a first piezo layer, and
a first electrode between the first substrate and the first piezo layer in the thickness direction,
the bottom switch comprises:
a first conductive contact configured on a bottom side of the bottom stack;
a second conductive contact aligned with the first conductive contact, and configured on a top side of a third substrate, and
the second spacer is configured between the bottom stack and the third substrate in the thickness direction, and configured in the first side of the force sensor.
2. The cantilever force sensor as claimed in claim 1 , wherein
the third substrate is a printed circuit board.
3. The cantilever force sensor as claimed in claim 1 , wherein
the first conductive contact and the second conductive contact are configured in the second side of the force sensor.
4. The cantilever force sensor as claimed in claim 3 , wherein
in a state where the top stack is not depressed toward the bottom stack, the first conductive contact slightly touches the second conductive contact without turning on the bottom switch, and
in response to the top stack being depressed toward the bottom stack, the first conductive contact is caused to touch the second conductive contact firmly to turn on the bottom switch.
5. The cantilever force sensor as claimed in claim 3 , wherein
in a state where the top stack is not depressed toward the bottom stack, the first conductive contact is slightly apart from the second conductive contact, and
in response to the top stack being depressed toward the bottom stack, a second side opposite to the first side of the bottom stack moves down using the second spacer as a fulcrum and causes the first conductive contact to touch the second conductive contact firmly to turn on the bottom switch.
6. The cantilever force sensor as claimed in claim 1 , wherein
the second stack comprises:
a second substrate,
a second piezo layer, and
a second electrode between the second substrate and the second piezo layer in the thickness direction, and
along the thickness direction, the first spacer overlaps the first substrate and the second substrate, without overlapping the first electrode, the first piezo layer, the second electrode and the second piezo layer.
7. The cantilever force sensor as claimed in claim 6 , wherein
as seen along the thickness direction, the first spacer has a shape of a segment of a circle.
8. The cantilever force sensor as claimed in claim 1 , wherein
the second stack comprises:
a second substrate,
a second piezo layer, and
a second electrode between the second substrate and the second piezo layer in the thickness direction, and
along the thickness direction, the first spacer overlaps the first substrate, the first electrode, the first piezo layer and the second substrate, without overlapping the second electrode and the second piezo layer.
9. The cantilever force sensor as claimed in claim 1 , wherein
along the thickness direction, the first spacer overlaps the second spacer.
10. The cantilever force sensor as claimed in claim 9 , wherein
the second stack comprises:
a second substrate,
a second piezo layer, and
a second electrode between the second substrate and the second piezo layer in the thickness direction, and
along the thickness direction, the second spacer overlaps the first substrate, the first electrode, the first piezo layer, the second substrate, the second electrode and the second piezo layer.
11. A cantilever force sensor, comprising a top stack, a bottom stack, and a first spacer, wherein
the first spacer is configured, in a thickness direction of the force sensor, between the top stack and the bottom stack, and is configured in a first side of the force sensor,
a second side, opposite to the first side, of the top stack, is cantilevered from the bottom stack,
in response to the top stack being depressed toward the bottom stack, the second side of the top stack moves down using the first spacer as a fulcrum,
the top stack comprises:
a top substrate,
a top piezo layer, and
a top electrode between the top substrate and the top piezo layer in the thickness direction,
the bottom stack comprises:
a printed circuit board having, on a top side thereof, a conductive contact, and
a bottom piezo layer on the top side of the printed circuit board, wherein the bottom piezo layer is wider than the conductive contact and covers the conductive contact.
12. The cantilever force sensor as claimed in claim 11 , wherein
along the thickness direction, the first spacer overlaps the top substrate and the printed circuit board, without overlapping the top electrode, the top piezo layer, the conductive contact and the bottom piezo layer.
13. The cantilever force sensor as claimed in claim 12 , wherein
as seen along the thickness direction, the first spacer has a shape of a segment of a circle.
14. The cantilever force sensor as claimed in claim 11 , wherein
along the thickness direction, the first spacer overlaps the top substrate, the top electrode, the top piezo layer, the printed circuit board and the bottom piezo layer.
15. The cantilever force sensor as claimed in claim 11 , wherein
along the thickness direction, the first spacer overlaps the top substrate, the top electrode, the top piezo layer, the printed circuit board, without overlapping the bottom piezo layer.
16. The cantilever force sensor as claimed in claim 11 , wherein
along the thickness direction, the first spacer overlaps the top substrate, the printed circuit board and the bottom piezo layer, without overlapping the top electrode and the top piezo layer.
17. A cantilever force sensor, comprising a top stack, a bottom stack, and a first spacer, wherein
the first spacer is configured, in a thickness direction of the force sensor, between the top stack and the bottom stack, and is configured in a first side of the force sensor,
a second side, opposite to the first side, of the top stack, is cantilevered from the bottom stack,
in response to the top stack being depressed toward the bottom stack, the second side of the top stack moves down using the first spacer as a fulcrum,
the top stack comprises:
a top substrate,
a top piezo layer, and
a top electrode between the top substrate and the top piezo layer in the thickness direction,
the bottom stack comprises:
a bottom substrate, and
a bottom piezo layer on a top side of the bottom substrate,
along the thickness direction, the first spacer overlaps the top substrate and the bottom substrate, without overlapping the top electrode, the top piezo layer and the bottom piezo layer, and
as seen along the thickness direction, the first spacer has a shape of a segment of a circle.
18. The cantilever force sensor as claimed in claim 17 , wherein
at least one of the top piezo layer or the bottom piezo layer is made of a material selected from the group consisting of piezo-electric material, triboelectric material, resistive material, and dielectric material.
19. The cantilever force sensor as claimed in claim 17 , further comprising:
a bottom switch which comprises:
a first conductive contact configured on a bottom side of the bottom stack;
a second conductive contact aligned with the first conductive contact, and configured on the top side of a third substrate; and
a second spacer which is configured between the bottom stack and the third substrate in the thickness direction, and configured in the first side of the force sensor,
wherein
the first conductive contact and the second conductive contact are configured in the second side of the force sensor,
in a state where the top stack is not depressed toward the bottom stack, the bottom switch is not turned on, and
in response to the top stack being depressed toward the bottom stack, the first conductive contact touches the second conductive contact to turn on the bottom switch.
20. The cantilever force sensor as claimed in claim 17 , wherein
the bottom substrate is a printed circuit board having, on the top side thereof, a conductive contact, and
the bottom piezo layer is wider than the conductive contact and covers the conductive contact.
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US18/162,719 US20230168138A1 (en) | 2021-01-19 | 2023-02-01 | Cantilever force sensor |
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US17/152,668 US11609130B2 (en) | 2021-01-19 | 2021-01-19 | Cantilever force sensor |
US18/162,719 US20230168138A1 (en) | 2021-01-19 | 2023-02-01 | Cantilever force sensor |
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US17/152,668 Continuation US11609130B2 (en) | 2021-01-19 | 2021-01-19 | Cantilever force sensor |
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US18/162,719 Pending US20230168138A1 (en) | 2021-01-19 | 2023-02-01 | Cantilever force sensor |
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Family Cites Families (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57177583A (en) * | 1981-04-14 | 1982-11-01 | Int Standard Electric Corp | Holl effect device |
US5203206A (en) * | 1989-01-04 | 1993-04-20 | Zellweger Uster, Inc. | Apparatus and methods for testing tension-elongation or cross-sectional properties of single fibers and multiple fiber bundles |
US5138879A (en) * | 1989-01-04 | 1992-08-18 | Zellweger Uster, Inc. | Method for producing multiple fiber data |
JP2533272B2 (en) * | 1992-11-17 | 1996-09-11 | 住友電気工業株式会社 | Method for manufacturing semiconductor device |
JP4089082B2 (en) * | 1998-07-28 | 2008-05-21 | 株式会社デンソー | Pressure sensitive conversion device |
JP2001076605A (en) * | 1999-07-01 | 2001-03-23 | Advantest Corp | Integrated microswitch and its manufacture |
US6768403B2 (en) * | 2002-03-12 | 2004-07-27 | Hrl Laboratories, Llc | Torsion spring for electro-mechanical switches and a cantilever-type RF micro-electromechanical switch incorporating the torsion spring |
US6646215B1 (en) * | 2001-06-29 | 2003-11-11 | Teravicin Technologies, Inc. | Device adapted to pull a cantilever away from a contact structure |
JP3770158B2 (en) * | 2001-12-26 | 2006-04-26 | ソニー株式会社 | Manufacturing method of MEMS element |
US7253488B2 (en) * | 2002-04-23 | 2007-08-07 | Sharp Laboratories Of America, Inc. | Piezo-TFT cantilever MEMS |
US7395693B2 (en) * | 2004-12-02 | 2008-07-08 | The Arizona Board of Regents, a body corporate of the state of Arizona acting for Northern Arizona University | Embedded piezoelectric microcantilever sensors |
US7053736B2 (en) * | 2002-09-30 | 2006-05-30 | Teravicta Technologies, Inc. | Microelectromechanical device having an active opening switch |
JP4109182B2 (en) * | 2003-11-10 | 2008-07-02 | 株式会社日立メディアエレクトロニクス | High frequency MEMS switch |
US6825428B1 (en) * | 2003-12-16 | 2004-11-30 | Intel Corporation | Protected switch and techniques to manufacture the same |
JP2006179252A (en) * | 2004-12-21 | 2006-07-06 | Fujitsu Component Ltd | Switch device |
KR100726436B1 (en) * | 2005-07-27 | 2007-06-11 | 삼성전자주식회사 | MEMS switch actuating by the electrostatic force and piezoelecric force |
US7623007B2 (en) * | 2005-10-19 | 2009-11-24 | Panasonic Corporation | Device including piezoelectric thin film and a support having a vertical cross-section with a curvature |
ES2354826T3 (en) * | 2006-09-28 | 2011-03-18 | Siemens Aktiengesellschaft | CONTROL UNIT WITH CONTROL DEVICE. |
JP5083977B2 (en) * | 2007-05-17 | 2012-11-28 | パナソニック株式会社 | ELECTROMECHANICAL ELEMENT, ITS DRIVING METHOD, AND ELECTRIC DEVICE USING THE SAME |
US7977587B2 (en) * | 2008-10-08 | 2011-07-12 | Research In Motion Limited | Two-stage switch assembly |
KR101447115B1 (en) * | 2008-12-16 | 2014-10-06 | 삼성전자주식회사 | Contact force sensor package and method for fabricating the same |
US8289674B2 (en) * | 2009-03-17 | 2012-10-16 | Cavendish Kinetics, Ltd. | Moving a free-standing structure between high and low adhesion states |
TWI467601B (en) | 2009-08-31 | 2015-01-01 | Universal Cement Corp | Micro-deformable piezo-resistive material and manufacturing method thereof |
US20120050335A1 (en) * | 2010-08-25 | 2012-03-01 | Universal Cement Corporation | Zooming system for a display |
TWI448935B (en) * | 2011-05-20 | 2014-08-11 | Nat Univ Tsing Hua | 3-d touch sensor and 3-d touch panel |
US8779315B2 (en) * | 2011-06-02 | 2014-07-15 | Universal Cement Corporation | Cover glass pressure button |
US8993913B2 (en) * | 2011-06-02 | 2015-03-31 | Universal Cement Corporation | Cover glass pressure button |
WO2013165601A1 (en) * | 2012-05-03 | 2013-11-07 | Yknots Industries Llc | Moment compensated bending beam sensor for load measurement on platform supported by bending beams |
US9324515B2 (en) * | 2012-08-06 | 2016-04-26 | Synaptics Incorporated | Touchsurface assembly utilizing magnetically enabled hinge |
US10578499B2 (en) * | 2013-02-17 | 2020-03-03 | Microsoft Technology Licensing, Llc | Piezo-actuated virtual buttons for touch surfaces |
US9070499B2 (en) * | 2013-05-14 | 2015-06-30 | Universal Cement Corporation | Light emitting key |
US9677954B2 (en) * | 2014-08-22 | 2017-06-13 | Uneo Inc. | Instant response pressure sensor |
US9335840B1 (en) * | 2014-11-21 | 2016-05-10 | Uneo Inc. | Flexible circuit board based force sensor |
US9762236B2 (en) * | 2015-02-02 | 2017-09-12 | Uneo Inc. | Embedded button for an electronic device |
US9766725B2 (en) * | 2015-04-22 | 2017-09-19 | Uneo Inc. | Force sensing module |
US9679713B2 (en) * | 2015-05-26 | 2017-06-13 | Uneo Incorporated | Key switch and analog pressure detection system including the same |
US10402617B2 (en) * | 2015-09-30 | 2019-09-03 | Apple Inc. | Input devices incorporating biometric sensors |
TWI628569B (en) * | 2015-09-30 | 2018-07-01 | 蘋果公司 | Keyboard with adaptive input row |
EP3373839A4 (en) * | 2015-11-12 | 2019-07-03 | Covidien LP | Robotic surgical systems and methods for monitoring applied forces |
KR101680004B1 (en) * | 2016-01-29 | 2016-11-25 | 현대자동차주식회사 | Touch input apparatus |
KR101714300B1 (en) * | 2016-01-29 | 2017-03-08 | 현대자동차주식회사 | Touch input apparatus |
US20170283249A1 (en) * | 2016-04-01 | 2017-10-05 | Intel Corporation | Piezoelectric package-integrated switching devices |
US10234339B2 (en) * | 2016-06-02 | 2019-03-19 | Uneo Inc. | Force sensor with noise shielding layer |
US10591993B2 (en) * | 2016-09-21 | 2020-03-17 | Apple Inc. | Haptic structure for providing localized haptic output |
JP6926568B2 (en) * | 2017-03-24 | 2021-08-25 | セイコーエプソン株式会社 | Physical quantity sensors, electronics and mobiles |
US10649559B2 (en) * | 2017-04-20 | 2020-05-12 | Htc Corporation | Handheld electronic apparatus and touch detection method thereof |
US10429254B2 (en) * | 2017-04-27 | 2019-10-01 | Universal Cement Corporation | Piezo force sensor with solid-state bonding spacer |
DE102017211080B3 (en) * | 2017-06-29 | 2018-11-08 | Infineon Technologies Dresden GmbH & Co. KG | Micromechanical sensor and method for producing a micromechanical sensor and a micromechanical sensor element |
US10825628B2 (en) * | 2017-07-17 | 2020-11-03 | Analog Devices Global Unlimited Company | Electromagnetically actuated microelectromechanical switch |
US20200348757A1 (en) * | 2019-05-03 | 2020-11-05 | Immersion Corporation | Force sensors for haptic surfaces |
-
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- 2021-01-19 US US17/152,668 patent/US11609130B2/en active Active
- 2021-04-22 CN CN202110432914.5A patent/CN114812880A/en active Pending
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- 2023-02-01 US US18/162,719 patent/US20230168138A1/en active Pending
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US20220228931A1 (en) | 2022-07-21 |
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