Abstract: A signal transmission device having a capacitor coupler includes a semiconductor substrate, a low voltage circuit region, an insulating film formed on the semiconductor substrate, a lower electrode formed on the semiconductor substrate via the insulating film, and an upper electrode disposed opposite to the lower electrode via the insulating film interposed therebetween. A shield portion includes a conductor to which a low voltage is applied is provided between the lower electrode and the upper electrode and the low voltage circuit region. When a stacking direction of the lower electrode and the upper electrode is defined as a height direction, the shield portion is located higher than the low voltage circuit region and has an eaves part extending on an opposite side with respect to the lower electrode and the upper electrode.

Abstract: A semiconductor device includes: a semiconductor substrate including a support substrate, a buried insulating film, and an active layer stacked in the stated order; a trench isolation portion disposed in the active layer and dividing the active layer into a plurality of regions including an extracting region; and a contact electrode disposed in a through hole that is provided from a main surface of the semiconductor substrate to reach the support substrate in the extracting region, and electrically connected to the support substrate. A minimum width of a portion of the contact electrode being in contact with the support substrate is wider than a minimum width of a portion of the contact electrode located in the active layer.

Abstract: An alkaline storage battery configured with an improved nickel positive electrode plate having a high capacity density and a high utilization of the active material is disclosed. The nickel positive electrode plate comprises a porous metal plaque, a first layer of nickel hydroxide loaded in close proximity to inner surfaces of pores of the porous metal plaque, and a second layer of nickel hydroxide loaded over the first layer. The nickel hydroxide in the second layer has a larger particle diameter than that in the first layer, and the amount of the nickel hydroxide in the second layer occupies a majority of the total amount of the active material filled in the positive electrode.

Abstract: An alkaline storage battery configured with an improved nickel positive electrode plate having a high capacity density and a high utilization of the active material is disclosed. The nickel positive electrode plate comprises a porous metal plaque, a first layer of nickel hydroxide loaded in close proximity to inner surfaces of pores of the porous metal plaque, and a second layer of nickel hydroxide loaded over the first layer. The nickel hydroxide in the second layer has a larger particle diameter than that in the first layer, and the amount of the nickel hydroxide in the second layer occupies a majority of the total amount of the active material filled in the positive electrode.