摘要:
In a production method of a piezoelectric element, an unneeded electric field is prevented from being applied to a piezoelectric thin film layer during the production process, resulting in a high performance piezoelectric element production method. The production method includes a first process for depositing an under electrode layer, a piezoelectric thin film layer and an upper electrode layer successively on a substrate such that the under electrode layer and the upper electrode layer form a short-circuit, a second process, after the first process, for etching including dry etching, the second process commenced while the under electrode layer and the upper electrode layer are short-circuited, a third process, after the second process, for polarizing by applying a voltage across the under electrode layer and the upper electrode layer, a fourth process, after the third process, for individualizing each piezoelectric element.
摘要:
A method for fabricating a piezoelectric element capable of ensuring high piezoelectric characteristics by preventing generation of unnecessary electric field in a piezoelectric thin film layer during the fabrication process. The method for fabricating a piezoelectric element comprises a first step for depositing a lower electrode layer, a piezoelectric thin film layer and an upper electrode layer sequentially on a substrate, a second step for performing etching including dry etching, a third step for performing polarization by applying a voltage between the lower electrode layer and the upper electrode layer, and a fourth step for segmenting into individual piezoelectric elements wherein the lower electrode layer and the upper electrode layer are held in short circuit state at least when dry etching is performed.
摘要:
A substrate is made of single crystal silicon and having a tuning folk shape. The substrate includes plural arms extending in parallel with each other and a joint section for connecting respecting ends of the arms with each other. An angular velocity sensor includes a barrier layer containing silicon oxide provided on each of the arms of the substrate, a first adhesion layer containing titanium provided on the barrier layer a first electrode layer containing at least one of titanium and titanium oxide provided on the first adhesion layer, an orientation control layer provided on the first electrode layer, a piezoelectric layer provided on the orientation control layer, a second adhesion layer provided on the piezoelectric layer, and a second electrode layer provided on the second adhesion layer. This angular velocity sensor has a small size and stable characteristics.
摘要:
(Object) To miniaturize a field-effect transistor. (Means of Achieving the Object) A field-effect transistor includes a semiconductor film formed on a base, a gate insulating film formed on a part of the semiconductor film, a gate electrode formed on the gate insulating film, and a source electrode and a drain electrode formed in contact with the semiconductor film, wherein a thickness of the source electrode and the drain electrode is smaller than a thickness of the gate insulating film, and the gate insulating film includes a region that is not in contact with the source electrode or the drain electrode.
摘要:
A method for manufacturing a field-effect transistor includes forming an active layer of an oxide semiconductor, forming a conducting film to cover the active layer, patterning the conducting film through an etching process using an etchant to form a source electrode and a drain electrode, and performing, at least before the patterning the conducting film, a treatment on the active layer so that an etching rate of the active layer is less than an etching rate of the conducting film.
摘要:
A field-effect transistor includes a substrate; a source electrode, a drain electrode, and a gate electrode that are formed on the substrate; a semiconductor layer by which a channel is formed between the source electrode and the drain electrode when a predetermined voltage is applied to the gate electrode; and a gate insulating layer provided between the gate electrode and the semiconductor layer. The gate insulating layer is formed of an amorphous composite metal oxide insulating film including one or two or more alkaline-earth metal elements and one or two or more elements selected from a group consisting of Ga, Sc, Y, and lanthanoid except Ce.
摘要:
A working machine engine is provided. The air flowing through the front side cooling air flow passage and the upper side cooling air flow passage which are provided in the front side and the upper side of the casing, respectively, and the air flowing through the auxiliary air flow passage provided in the back side of the casing join together near the opening. By this means, the air flowing through the auxiliary air flow passage can change the direction of the air flowing lengthwise through the front side cooling air flow passage and the upper side cooling air flow passage.
摘要:
To provide is a p-type oxide, including an oxide, wherein the oxide includes: Cu; and an element M, which is selected from p-block elements, and which can be in an equilibrium state, as being present as an ion, wherein the equilibrium state is a state in which there are both a state where all of electrons of p-orbital of an outermost shell are lost, and a state where all of electrons of an outermost shell are lost, and wherein the p-type oxide is amorphous.
摘要:
According to one embodiment, a semiconductor device including a field-effect transistor, and a resistance element connected between a gate electrode of the field effect transistor and a connection point connected between a back gate electrode of the field effect transistor and one of source-drain regions of the field effect transistor, a voltage being applied between the other of the source-drain regions and the gate electrode.
摘要:
A second blade-driving mechanism includes second blade-driving first member and second blade-driving second member, only the second blade-driving second member is rotated against elastic force of a blade-driving spring while the second blade-driving first member engages and is locked by a locking member at start of cocking operation of the cocking member to keep a second blade covering an exposure aperture, and the second blade-driving first member is disengaged from locking member at final stage of cocking operation, so the second blade-driving first member can be rotated by elastic force of a second blade-cocking spring and the second blade is made to open the exposure aperture. Staring cocking operation of a focal plane shutter is possible irrespective of the length of time during which imaging information can be transferred from an image sensor to storage via an information-processing circuit.