摘要:
Disclosed herein is an inertial sensor of the present invention. An inertial sensor 100 according to a preferred embodiment of the present invention includes a plate-shaped membrane 110, a mass body 120 disposed under a central portion 113 of the membrane 110, a post 130 disposed under an edge 115 of the membrane 110 and surrounding the mass body 120, a piezoelectric material 140 formed above the membrane 110 and provided with a cavity 141 in a thickness direction, a sensing electrode 150 disposed in the cavity 141 and a driving electrode 160 disposed outside the cavity 141, whereby the thickness of the piezoelectric material 140 of the portion on which the sensing electrode 150 is disposed is formed to be thin, such that the sensitivity of the inertial sensor 100 can be improved.
摘要:
Disclosed is an inertial sensor, including a membrane, a mass body provided underneath a central portion of the membrane, a post provided underneath a peripheral portion of the membrane, and a cap having a peripheral portion bonded to a lower surface of the post using low-temperature silicon direct bonding. A method of manufacturing the inertial sensor is also provided.
摘要:
Disclosed herein is an inertial sensor. The inertial sensor 100 according to preferred embodiments of the present invention includes: a membrane 110; a mass body 120 disposed under the membrane 110; a piezoelectric body 130 formed on the membrane 110 to drive the mass body 120; and trenches 140 formed by being collapsed in a thickness direction of the piezoelectric body 130 so as to vertically meet a direction in which the mass body 120 is driven. By this configuration, the trenches are formed by being collapsed in a thickness direction of the piezoelectric body 130 to provide directivity while retaining the rigidity of the piezoelectric body 130 to prevent a wave from being propagated in an unnecessary direction, thereby driving the inertial sensor 100 in a desired specific direction.
摘要:
A method for preparing a nano-sized metal powder feedstock comprises the steps of preparing a nano-sized metal powder, mixing the metal powder with a solution of an organic binder in a solvent, and wet-milling the mixture so that aggregates of the metal powder are uniformly formed. Further disclosed is a method for producing a sintered body using the feedstock.
摘要:
Disclosed herein is an inertial sensor. An inertial sensor 100 according to a preferred embodiment of the present invention includes a plate-shaped membrane 110, a mass body 130 that is provided under a central portion 111 of the membrane 110 and includes an integrated circuit, and a post 140 that are provided under an edge 112 of the membrane 110 to surround the mass body 130, whereby the overall thickness and area of the inertial sensor can be reduced by including the integrated circuit in the mass body 130 to implement a thin and small inertial sensor 100.
摘要:
Disclosed herein is an inertial sensor of the present invention. An inertial sensor 100 according to a preferred embodiment of the present invention includes a plate-shaped membrane 110, a mass body 120 disposed under a central portion 113 of the membrane 110, a post 130 disposed under an edge 115 of the membrane 110 and surrounding the mass body 120, a piezoelectric material 140 formed above the membrane 110 and provided with a cavity 141 in a thickness direction, a sensing electrode 150 disposed in the cavity 141 and a driving electrode 160 disposed outside the cavity 141, whereby the thickness of the piezoelectric material 140 of the portion on which the sensing electrode 150 is disposed is formed to be thin, such that the sensitivity of the inertial sensor 100 can be improved.
摘要:
Disclosed herein is an inertial sensor, including: a membrane; a mass body disposed under the membrane; a sensing unit formed on the membrane and including a piezoelectric body; and a spring constant control unit formed to be spaced apart from the sensing unit and including a piezoelectric body. According to the preferred embodiment of the present invention, the DC acceleration (in particular, gravity acceleration) can be measured by using the change in the spring constant without changing the structure of the inertial sensor including the piezoelectric material of the prior art.