摘要:
Described herein is a semiconductor device comprising: a semiconductor substrate; a trench provided at a surface of the semiconductor substrate; a first insulating layer covering an inner surface of the trench; and a second insulating layer located at a surface of the first insulating layer in the trench. A refraction index of the first insulating layer is larger than a refraction index of the second insulating layer.
摘要:
A manufacturing method for manufacturing a lateral semiconductor device having an SOI (Silicon on Insulator) substrate, the lateral semiconductor device comprising a semiconductor layer that includes a buried oxide layer and a drift region, the manufacturing method comprising an etching process of etching, by a predetermined depth, a LOCOS oxide that projects from a surface of the semiconductor layer by a predetermined thickness and is embedded in the semiconductor layer by a predetermined thickness, and a trench forming process of simultaneously forming a first trench extending from the drift region toward the buried oxide layer, and a second trench extending from a portion obtained by the etching in the etching process toward the buried oxide layer, at a same etching rate, and stopping forming the first trench and the second trench at a time when the second trench reaches the buried oxide layer.
摘要:
Provided are a food packed member holding sheet-like food in a compact package, that allows an eater to easily take out sheet-like food and easily eat it even when either hand of the eater's is unavailable, and a method of producing the same. The inventive packed member is a packed member of sheet-like food such as chewing gum or chocolate, wherein plural pieces of sheet-like food (1) are wrapped respectively with a wrapping sheet (2) which includes a picking part (4), a fixing part (5), and a fragile part (3) between the both parts, and is openable by cutting the fragile part (3) and taking out the picking part (4), and a sheet-like food unit (1a) formed by joining the plural pieces of wrapped sheet-like food (1) by joining a base sheet (6) at the fixing parts (5) of the wrapping sheets (2) is held while fixed to a packaging container material (7, 31, 41) at the joining base sheet (6), and the inventive production method includes producing the packed member by placing the sheet-like food unit (1a) on a packaging material (7, 31, 41).
摘要:
A packaging case is provided wherein a sheet-like food can be easily taken out to be eaten even when one hand is filled with something as well as the sheet-like foods can be held compactly. A package holding a sheet-like food 1 wrapped with a wrapper, such as chewing gums or chocolates, in the packaging case is characterized in that the wrapper can be opened by cutting perforations 5 between an extracting portion 6 and a fixing portion 7 to extract the extracting portion 6, and the each sheet-like food 1 is fixed to packaging cases 8 and 31 with the fixing portion 7 of the wrapper.
摘要:
A packaging container is provided, which is configured such that a plurality of food pieces are contained in anteroposteriorly overlapping relation in a plurality of rows, and satisfies requirements for the compactness of the container and the pick-out easiness for picking out each of the food pieces. In a packaging container (A) having a slidable configuration, chewing gum pieces (40) (food strips) can be contained upright in side-by-side relation in a front chamber (L) and in a rear chamber (B) located behind the front chamber (L). The rear chamber (B) is combined with the front chamber (L) so as to be slidable upward with respect to the front chamber (L). Therefore, there is no need to preliminarily provide a raised bottom portion in a rear portion of the packaging container (A) for locating chewing gum strips (40) contained in a rear row (rear chamber (B)) at a higher height level than chewing gum strips (40) contained in a front row (front chamber (L)), but the chewing gum strips (40) can be easily picked out by sliding the rear chamber (B) upward with respect to the front chamber (L) as required to locate the rear row chewing gum strips (40) at a higher height level than the front row chewing gum strips (40). This obviates the need for providing the raised bottom portion, thereby achieving the size reduction of the packaging container (A).
摘要:
A semiconductor device includes a semiconductor layer; a first type of a first semiconductor element that is arranged in a first element region of the semiconductor layer, has first and second main electrodes, and switches current; and a second type of a second semiconductor element that is arranged in a second element region of the semiconductor layer, has third and fourth main electrodes, and freewheels the current. The first and second element regions are adjacent in a direction orthogonal to a direction in which current flows, and are formed in a loop shape over the entire element region when the semiconductor layer is viewed from above. The first main electrode is electrically connected to the third main electrode, and the second main electrode is electrically connected to the fourth main electrode. When the semiconductor layer is viewed from above, a ratio of a length of the first main electrode to a length of the second main electrode is larger than a ratio of a length of the third main electrode to a length of the fourth main electrode.
摘要:
A lateral semiconductor device including a semiconductor substrate; a buried oxide layer formed on the semiconductor substrate, and an active layer formed on the buried oxide layer. The active layer includes a first conductivity type well region, a second conductivity type well region, and a first conductivity type drift region interposed between the first conductivity type well region and the second conductivity type well region. A region where current flows because of carriers moving between the first conductivity type well region and the second conductivity type well region, and a region where no current flows are formed alternately between the first conductivity type well region and the second conductivity type well region, in a direction perpendicular to a carrier moving direction when viewed in a plan view.
摘要:
A semiconductor device includes a semiconductor layer; a first type of a first semiconductor element that is arranged in a first element region of the semiconductor layer, has first and second main electrodes, and switches current; and a second type of a second semiconductor element that is arranged in a second element region of the semiconductor layer, has third and fourth main electrodes, and freewheels the current. The first and second element regions are adjacent in a direction orthogonal to a direction in which current flows, and are formed in a loop shape over the entire element region when the semiconductor layer is viewed from above. The first main electrode is electrically connected to the third main electrode, and the second main electrode is electrically connected to the fourth main electrode. When the semiconductor layer is viewed from above, a ratio of a length of the first main electrode to a length of the second main electrode is larger than a ratio of a length of the third main electrode to a length of the fourth main electrode.
摘要:
A lateral semiconductor device including a semiconductor substrate; a buried oxide layer formed on the semiconductor substrate, and an active layer formed on the buried oxide layer. The active layer includes a first conductivity type well region, a second conductivity type well region, and a first conductivity type drift region interposed between the first conductivity type well region and the second conductivity type well region. A region where current flows because of carriers moving between the first conductivity type well region and the second conductivity type well region, and a region where no current flows are formed alternately between the first conductivity type well region and the second conductivity type well region, in a direction perpendicular to a carrier moving direction when viewed in a plan view.
摘要:
A manufacturing method of a semiconductor device includes: a semiconductor substrate including a drain, a drift making contact with a front face of the drain, a body contacting with a front face of the drift, a source provided in part of a front face of the body, and a floating surrounded by the drift; and a gate including an insulator formed on an inner wall of a trench and a electrode disposed inside the insulator and which has a bottom portion contacting with the floating, the manufacturing method includes: forming the trench in a semiconductor wafer so as to have a bottom portion in which an end portion in a short direction perpendicular to a longitudinal direction thereof is deeper than a central portion; injecting an impurity ions into the bottom portion of the trench; and forming the central portion of the trench in the short direction to be deepened.