摘要:
This disclosure provides a technique that prevents debonding at an interface between a functional device and a resin on reflow soldering in a functional device-mounted module requiring a hollow structure. Also disclosed is a functional device having a functional portion mounted on a substrate formed with predetermined wiring patterns, wherein the functional portion of the functional device is arranged in a receiving space, and the substrate is provided with a hole which communicates with the receiving space and a solder-introducing portion made of a metallic material compatible with solder. During solder reflowing, the functional device-mounted module is placed on a mounting substrate such that the solder-introducing portion of the functional device-mounted module contacts a solder paste, and solder is melted with heat. Water inside the receiving space is thus discharged, and solder is introduced into the hole due to surface tension, and the interior of the receiving space is sealed.
摘要:
In order to improve reliability by preventing an edge breakdown in a semiconductor photodetector having a mesa structure such as a mesa APD, the semiconductor photodetector comprises a mesa structure formed on a first semiconductor layer of the first conduction type formed on a semiconductor substrate, the mesa structure including a light absorbing layer for absorbing light, an electric field buffer layer for dropping an electric field intensity, an avalanche multiplication layer for causing avalanche multiplication to occur, and a second semiconductor layer of the second conduction type, wherein the thickness of the avalanche multiplication layer at the portion in the vicinity of the side face of the mesa structure is made thinner than the thickness at the central portion of the mesa structure.
摘要:
A semiconductor light-receiving device includes: a substrate that has a first surface and a second surface facing each other; a first semiconductor layer that is formed on the first surface of the substrate and includes at least one semiconductor layer of a first conductivity type; a light absorption layer that is formed on the first semiconductor layer and generates carriers in accordance with incident light; a second semiconductor layer that is formed on the light absorption layer and includes at least one semiconductor layer of a second conductivity type; a first electrode part that is electrically connected to the first semiconductor layer and applies a first potential thereto; a second electrode part that is electrically connected to the second semiconductor layer and applies a second potential thereto; and a third semiconductor layer of the second conductivity type that is interposed between the first surface of the substrate and the first semiconductor layer.
摘要:
A surface-mounting substrate, for mounting thereon a part such as a semiconductor device, which comprises a core substrate, a plurality of layers of patterned wiring lines, which are separated from each other by an insulation layer interposed therebetween, vias piercing through the insulation layer to connect the wiring lines at the adjacent layers to each other, and a layer of connecting terminals to mount a part on the surface-mounting substrate, each of the connecting terminals connecting with the wiring line at the outermost layer of wiring lines, wherein the connecting terminal is filled in an outermost insulation layer provided at the surface of the surface-mounting substrate, and has a surface exposed at substantially the same level as the level of the surface of the outermost insulation layer. A structure comprising a surface-mounting substrate and a part mounted thereon, which comprises, as the substrate used, the surface-mounting substrate of the invention, is also disclosed.
摘要:
A surface mounting substrate is configured to surface mount a semiconductor element thereon, the semiconductor element having a plurality of protruding electrodes arranged in a staggered arrangement of two rows. A plurality of bonding pads formed on a substrate are arranged in a staggered arrangement corresponding to the staggered arrangement of the protruding electrodes of the semiconductor element. Each of the bonding pads includes a pad portion having a substantially uniform width and an end portion extending from the pad portion toward the other row of the bonding pads. The end portion of each of the bonding pads lacks a portion extending beyond a boundary between the end portion and the pad portion of the bonding pads arranged in the other row. Accordingly, a reliable mounting can be achieved even if the protruding electrodes are offset from bonding pads.
摘要:
A synthetic fiber having an uneven surface structure consisting of wrinkles having ridges and recesses of the surface of the fiber and not presenting specular luster, which may be used, for example, as artificial hair for wigs, can be produced easily and stably by melt-spinning a starting synthetic resin such as nylon and passing the spun monofilament through a cooling bath at a temperature not lower than 30.degree. C. for a period of time sufficient for developing wrinkles in its surface. Inclusion of a pigment such as carbon black in an appropriate amount in the starting material is effective in providing dense distribution of wrinkles.
摘要:
A semiconductor optical integrated device includes a substrate having a main surface with a first and second regions arranged along a waveguiding direction; a gain region including a first cladding layer, an active layer, and a second cladding layer arranged on the first region of the main surface; and a wavelength control region including a third cladding layer, an optical waveguide layer, and a fourth cladding layer arranged on the second region of the main surface and including a heater arranged along the optical waveguide layer. The substrate includes a through hole extending from a back surface of the substrate in the thickness direction and reaching the first region. A metal member is arranged in the through hole. The metal member extends from the back surface of the substrate in the thickness direction and is in contact with the first cladding layer.
摘要:
A communication device has a first communication section that supports a first communication mode having a low communication rate and a second communication section that supports a second communication mode having a higher communication rate than the first communication mode. The communication device includes a packet generation section and a communication control section. The packet generation section generates a first portion containing authentication information used for connection authentication for the second communication mode and a second portion other than the first portion. The communication control section performs control to cause the first communication section to transmit the first portion and to cause the second communication section to transmit the second portion after the connection authentication succeeds using the authentication information contained in the first portion.
摘要:
An information processing apparatus for communicating with a different information processing apparatus, includes: a first connection establishment block configured to control a first communication section, which carries out nearby wireless communication for delivering and accepting information to and from the different information processing apparatus positioned near to the information processing apparatus, to establish a connection for the nearby wireless communication; an acquisition block configured to acquire setting information for short range wireless communication which exhibits a wire communication range than the nearby wireless communication and capability information regarding the capacity of the different information processing apparatus from the different information processing apparatus through the nearby wireless communication; and a second connection establishment block configured to control a second communication section, which carries out the short range wireless communication, based on the setting information and the capability information to establish a connection for the short range wireless communication.
摘要:
An information management apparatus includes a communication unit configured to receive, from a plurality of communication processing apparatuses, a plurality of pieces of communication history data of near-field communication performed in the plurality of communication processing apparatuses; a data comparison unit configured to perform comparison of the plurality of pieces of communication history data received by the communication unit; and a data registration unit configured to register a plurality of pieces of user information associated with the plurality of communication processing apparatuses as a group in a database on condition that it is verified by the data comparison unit, in accordance with the plurality of pieces of communication history data of the near-field communication, that near-field communication has been performed between the plurality of communication processing apparatuses.