Abstract:
In one embodiment, a method of forming a semiconductor device includes forming a first inductor coil within and/or over a substrate. The first inductor coil is formed adjacent a top side of the substrate. First trenches are formed within the substrate adjacent the first inductor coil. The first trenches are filled at least partially with a magnetic fill material. At least a first portion of the substrate underlying the first inductor coil is thinned. A backside magnetic layer is formed under the first portion of the substrate. The backside magnetic layer and the magnetic fill material form at least a part of a magnetic core region of the first inductor coil.
Abstract:
In one embodiment, a method of forming a semiconductor device includes forming a first inductor coil within and/or over a substrate. The first inductor coil is formed adjacent a top side of the substrate. First trenches are formed within the substrate adjacent the first inductor coil. The first trenches are filled at least partially with a magnetic fill material. At least a first portion of the substrate underlying the first inductor coil is thinned. A backside magnetic layer is formed under the first portion of the substrate. The backside magnetic layer and the magnetic fill material form at least a part of a magnetic core region of the first inductor coil.
Abstract:
In an embodiment, a method for forming a microfabricated structure includes depositing a first membrane on a substrate, depositing a first isolation layer on the first membrane, depositing a stator layer on the first isolation layer, forming a perforated stator from the stator layer, wherein the first isolation layer is disposed on a first surface of the perforated stator, depositing a second isolation layer on a second surface of the perforated stator and depositing a second membrane on the second isolation layer, including depositing a pillar coupled between the first membrane and the second membrane, wherein the first isolation layer includes a first glass layer having a low etch rate, and a second glass layer having a high etch rate embedded in the first glass layer.
Abstract:
A microfabricated structure includes a deflectable membrane, a first clamping layer on a first surface of the deflectable membrane, a second clamping layer on a second surface of the deflectable membrane, a first perforated backplate on the first clamping layer, and a second perforated backplate on the second clamping layer, wherein the first clamping layer comprises a first tapered edge portion having a negative slope between the first perforated backplate and the deflectable membrane.
Abstract:
A MEMS-transducer comprises a membrane structure having a first main surface and a second main surface opposing the first main surface. A substrate structure holds the membrane structure, wherein the substrate structure overlaps with the first main surface of the membrane structure in a first edge region being adjacent to a first inner region of the first main surface. A gap is formed between the membrane structure and the substrate structure in the first edge region and extends from the first inner region into the first edge region.
Abstract:
A microfabricated structure includes a deflectable membrane, a first clamping layer on a first surface of the deflectable membrane, a second clamping layer on a second surface of the deflectable membrane, a first perforated backplate on the first clamping layer, and a second perforated backplate on the second clamping layer, wherein the first clamping layer comprises a first tapered edge portion having a negative slope between the first perforated backplate and the deflectable membrane.
Abstract:
A MEMS pump includes a basis structure, a membrane structure opposing the basis structure and being deflectable parallel to a surface normal of the basis structure and includes a pump chamber between the basis structure and the membrane structure wherein a volume of the pump chamber is based on a position of the membrane structure with respect to the basis structure. The MEMS pump includes a passage for letting a fluid pass into the pump chamber or exit the pump chamber, wherein the passage is arranged in-plane with respect to the pump chamber. The MEMS pump includes a valve structure coupled to the passage for connecting, in a first state, the passage to a first outer volume and for connecting, in a second state, the passage to a second outer volume.
Abstract:
A MEMS-transducer comprises a membrane structure having a first main surface and a second main surface opposing the first main surface. A substrate structure holds the membrane structure, wherein the substrate structure overlaps with the first main surface of the membrane structure in a first edge region being adjacent to a first inner region of the first main surface. A gap is formed between the membrane structure and the substrate structure in the first edge region and extends from the first inner region into the first edge region.
Abstract:
A microelectromechanical system includes a housing with an access opening and a sound transducer with a membrane and a backplate, wherein the sound transducer is coupled to the access opening. The microelectromechanical system includes a filter arranged between the access opening and the sound transducer and includes a filter material and a pretension element, the pretension element being mechanically connected to the filter material, and wherein the pretension element produces stress in the filter material in order to provide a bending deformation of the filter in a direction away from the backplate.
Abstract:
A MEMS sound transducer includes a backplate and a membrane held by an edge fixing such that the membrane is deflectable along a deflection direction toward the backplate. The MEMS sound transducer further includes an elevation element arranged between the membrane and the backplate and having a first height along the deflection direction. The MEMS sound transducer also includes a supporting structure and a spacer element arranged between the membrane and the supporting structure and having a second height along the deflection direction, the second height being greater than the first height. The supporting structure is the backplate or is a supporting element arranged opposite the backplate, such that the membrane is arranged between the backplate and the supporting element.