摘要:
Deterioration of the degree of vacuum in a vacuum chamber is prevented while securing adequate cooling performance by gas cooling. A substrate 21 is provided in a vacuum, and the cooling body 1 is provided close to a film non-formation surface of the substrate 21. A thin film is formed by depositing a film forming material on a film formation surface of the substrate 21 while introducing a cooling gas into between the substrate 21 and the cooling body 1. At this time, a gas which reacts with the film forming material is introduced as the cooling gas.
摘要:
A lithium ion secondary battery including: a positive electrode current collector; a positive electrode active material layer that is provided in contact with the positive electrode current collector; a separator layer that is provided on a side of the positive electrode active material layer on which the positive electrode current collector is not provided; a negative electrode active material layer that is provided on a side of the separator layer on which the positive electrode active material layer is not provided, that primarily contains silicon or tin, and that includes a opposing portion opposing the positive electrode active material layer and a non-opposing portion not opposing the positive electrode active material layer, the opposing portion and the non-opposing portion containing lithium produced by a thin film-forming method; and a negative electrode current collector that is provided on a side of the negative electrode active material layer on which the separator layer is not provided. Thereby, deformation of the negative electrode and deterioration in cycle characteristics accompanied by such deformation can be prevented.
摘要:
A positive electrode 14 has a positive electrode current collector 11 on which positive electrode mixture layers 12a, 12b are formed. A negative electrode 24 has a negative electrode current collector 21 on which negative electrode mixture layers 22a, 22b are formed.The positive electrode 14 and the negative electrode 24 are wound into a flat shape with a separator 31 interposed therebetween, thereby an electrode group 4. In a curved portion located at an end portion in a major axis direction of the electrode group 4, at least one of the positive electrode 14 or the negative electrode 24 is provided with uncoated portions 13a, 13b; 23a, 23b in which the mixture layers 12a, 12b; 22a, 22b are not formed on the current collector 11;21.
摘要:
A capacitor-equipped semiconductor device includes a semiconductor chip having a plurality of electrode terminals; a sheet-like substrate at least having a film capacitor; and a mounting substrate. The mounting substrate is provided on one side thereof with chip connection terminals and ground terminals. The chip connection terminals are disposed to correspond to the electrode terminals of the semiconductor chip. The ground terminals are disposed to correspond to the one electrode terminals of the film capacitor of the sheet-like substrate. The mounting substrate is provided on the other side thereof with external connection terminals connected to the chip connection terminals and the ground terminals and used to mount the mounting substrate on an external substrate.
摘要:
A connecting structure includes a circuit board with a first connection land having a plurality of conductor patterns on the surface thereof, a second connection land disposed in a position opposite to the first connection land of the circuit board, and a flexible board including an insulating layer formed so as to surround at least a part of outer periphery of the second connection land. The first connection land and the second connection land are bonded to each other with a bonding member, and the insulating layer is thicker than the total thickness of the second connection land and the first connection land. It is possible to obtain an electronic circuit connecting structure which is free from short-circuit due to running of the bonding member such as solder even with the connecting land greatly reduced in size, and its connecting method.
摘要:
A stationary position detection circuit and a motor drive circuit capable of more properly detecting the rotor position are disclosed. The stationary position detection circuit supplies an alternating current to each phase load of the motor. The time during which the current flows in a first direction and the time during which the current flows in a second direction opposite to the first direction are converted into electrical signals and amplified. In accordance with the value of the electrical signals, the position of the motor rotor in stationary mode is determined. The use of the alternating current, unlike the kickback voltage, makes it possible to improve the detection accuracy by amplifying the electrical signals with an increased number of alternations. An increased number of alternations can amplify the electrical signals without increasing the value of the alternating current, and therefore, unlike in the case of the kickback voltage, the alternating current of a large value is not required. As a result, the alternating current can be reduced to a small value and the vibration can be suppressed.
摘要:
A circuit substrate has a flexible thin film, electric wires supported on the film, and an electronic component supported on the film and positioned between the wires so that the wires and the component are electrically connected serially. Also, a thickness of the component is less than that of the electric wires.
摘要:
Deterioration of the degree of vacuum in a vacuum chamber is prevented while securing adequate cooling performance by gas cooling. A substrate 21 is provided in a vacuum, and the cooling body 1 is provided close to a film non-formation surface of the substrate 21. A thin film is formed by depositing a film forming material on a film formation surface of the substrate 21 while introducing a cooling gas into between the substrate 21 and the cooling body 1. At this time, a gas which reacts with the film forming material is introduced as the cooling gas.
摘要:
A current collector includes a metal foil and protrusions formed on one face or both faces of the metal foil in a predetermined arrangement. The protrusions are substantially rhombic and aligned in a zigzag. Also, both end portions of each protrusion in each of two orthogonal axial directions protrude outward. Middle portions between the end portions are recessed inward. When columnar blocks of an active material are formed on the protrusions to form an active material layer, the gaps between the protrusions can be increased at portions where the interval between the protrusions is the smallest. As a result, internal stress of the active material layer created by charge/discharge of the battery can be alleviated, and the battery life can be increased.
摘要:
A lithium ion secondary battery including: a positive electrode current collector; a positive electrode active material layer that is provided in contact with the positive electrode current collector; a separator layer that is provided on a side of the positive electrode active material layer on which the positive electrode current collector is not provided; a negative electrode active material layer that is provided on a side of the separator layer on which the positive electrode active material layer is not provided, that primarily contains silicon or tin, and that includes a opposing portion opposing the positive electrode active material layer and a non-opposing portion not opposing the positive electrode active material layer, the opposing portion and the non-opposing portion containing lithium produced by a thin film-forming method; and a negative electrode current collector that is provided on a side of the negative electrode active material layer on which the separator layer is not provided. Thereby, deformation of the negative electrode and deterioration in cycle characteristics accompanied by such deformation can be prevented.