Abstract:
PROBLEM TO BE SOLVED: To provide a vibration gyro sensor which is attempted to improve in durability at a lower cost, while maintaining the characteristics of size reduction. SOLUTION: The gyro sensor 1 comprises a support substrate 2, having a wiring pattern 5 provided with a plurality of lands 4 and a pair of vibrating elements 20X and 20Y mounted on the supporting substrate 2. Each vibrating element 20 has a base 22 provided with a mounting surface, having the plurality of terminal parts 25 to be connected with the lands 4, and the vibrating parts 23 provided with a substrate facing surface, constituting a surface identical to the mounting surface of the base 22, from which it protrudes like a cantilever from the side periphery of the base 22, the base parts of the vibrator parts 23 have reinforcement parts 129, the sections of which are made gradually large. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress a variation of gaps between the tip of a projection, provided directly underneath a movable portion, and the movable portion in the direction of thickness in a semiconductor dynamic quantity sensor in which a movable portion is partitioned from a semiconductor layer by a groove reaching an insulation layer and an insulation layer, directly underneath the movable portion is removed through the groove.SOLUTION: A substrate made of single-crystal silicon is prepared, in which a semiconductor layer that is made of P conductivity-type silicon having higher impurity concentration than a semiconductor substrate and is arranged on the surface of the semiconductor substrate, with a surface having (100) plane with an insulation layer in between. The semiconductor layer is etched anisotropically to form a groove reaching the insulation layer, so as to partition a movable portion. The insulation layer is etched through the groove, making the groove reach the semiconductor substrate, and the width of the insulation layer directly underneath the movable portion in the horizontal direction is made smaller than that of the movable portion. The semiconductor substrate is subject to alkali-etching through the groove, and a projection the tip of which is in contact with the insulation layer is formed on the surface of the semiconductor substrate directly underneath the movable portion. The insulation layer located directly underneath the movable portion is removed.
Abstract:
PROBLEM TO BE SOLVED: To suppress a variation of gaps between the tip of the projection provided, directly underneath a movable portion and the movable portion in the direction of thickness in a semiconductor dynamic quantity sensor wherein a movable portion is partitioned from a semiconductor layer by a groove reaching an insulation layer and the insulation layer, directly underneath the movable portion is removed through the groove.SOLUTION: A substrate made of single-crystal silicon is prepared, wherein a semiconductor layer that is made of P conductivity-type silicon having higher impurity concentration than a semiconductor substrate and is arranged on the surface of the semiconductor substrate, with a surface having (100) plane with an insulation layer in between. The semiconductor layer is etched anisotropically to form a groove reaching the insulation layer, so as to partition a movable portion. The insulation layer is etched through the groove, making the groove to reach the semiconductor substrate, and the width of the insulation layer, directly underneath the movable portion in the horizontal direction is made smaller than that of the movable portion. The groove is subject to alkali-etching through the groove, and a projection the tip of which is in contact with the insulation layer is formed on the surface of the semiconductor substrate directly underneath the movable portion. The insulation layer located directly underneath the movable portion is removed.
Abstract:
PROBLEM TO BE SOLVED: To provide VOnanowire and a nanowire device using the same.SOLUTION: Nanoparticles or nanodots by a transition metal atom are formed on a substrate 1 as a growth catalyst 3, and VOnanowire is grown up slender and long along the [110] direction on the surface of the substrate heated under reduced pressure by a gas phase-liquid phase-solid phase (VLS) growth method. If the crystal face is made to be the (110) face using tetragonal TiOas a substrate, VOnanowire 2a can be grown to a direction of 90° to the surface of the substrate, and if the crystal face is made to be the (100) face, VOnanowire 2b can be grown to the 45° direction. The forming region of nanowire can be controlled, and VOnanowire whose diameter, growth direction and length are controlled can be formed on the substrate at a high density.
Abstract:
본 발명은 멤스(MEMS : Micro Electro Mechanical System) 마이크로폰 및 그 제조 방법에 관한 것으로, 기판의 상부 공정만을 통해 멤스 마이크로폰을 제작함으로써, 기판의 상하부 공정을 모두 이용하던 종래에 비하여 제조 공정을 단순화할 수 있는 것을 특징으로 한다. 따라서, 본 발명에 따르면 간단하고 용이한 제조 공정에 의해 제조 공정에서 발생되는 불량을 최소화하여 제조수율을 증대시킬 수 있으며, 멤스 마이크로폰의 내구성을 높여 외부환경에 대한 시스템의 안정성을 높일 수 있다. 멤스 마이크로폰, 후방음향챔버, 후방음향챔버 벤트홀, 하부전극