摘要:
An air flow rate measuring device serves to measure a flow rate of air flowing through a main passage inside an intake pipe of an engine. A base has its one end directed axially of the main passage toward an upstream side of air flowing therein, and its other end directed toward a downstream side thereof, with a bent groove being formed in the base. A circuit module includes a support substrate and a detection element installed one surface of the support substrate for detecting the flow rate of air, the module being joined to the base in a face-to-face relation with respect to each other to form an auxiliary passage in cooperation with the groove. The detection element on the one surface of the support substrate is exposed to air in the auxiliary passage, and the other surface of the support substrate is exposed to air in the main passage.
摘要:
A high-contrast image recognition can be performed by recognizing an image of a recognition mark from a back surface of a wafer by a visible-light camera by irradiating a visible light from a circuit pattern surface of a silicon substrate. A thickness of the silicon substrate is set to 5 μm to 50 μm. A white or visible light having a wavelength equal to or less than 800 nm is irradiated onto the circuit-pattern forming surface of the substrate. A visible light that has transmitted through the silicon substrate is received by a visible-light camera on a side of a back surface of the silicon substrate. An image of a recognition mark formed on the circuit-pattern forming surface of the silicon substrate is recognized by the visible-light camera.
摘要:
In a stacked semiconductor device which has a plurality of semiconductor chips of desired sizes stacked as one package, a first semiconductor chip is mounted on a flexible printed wiring board provided with external connecting terminals. A printed circuit board is placed and mounted on the first semiconductor chip by flip-chip bonding. A second semiconductor chip is secured onto the printed circuit board. The second semiconductor chip is connected to the flexible printed wiring board by wire bonding. The first semiconductor chip is connected to the flexible printed wiring board by wire bonding via the printed circuit board.
摘要:
In a stacked semiconductor device which has a plurality of semiconductor chips of desired sizes stacked as one package, a first semiconductor chip is mounted on a flexible printed wiring board provided with external connecting terminals. A printed circuit board is placed and mounted on the first semiconductor chip by flip-chip bonding. A second semiconductor chip is secured onto the printed circuit board. The second semiconductor chip is connected to the flexible printed wiring board by wire bonding. The first semiconductor chip is connected to the flexible printed wiring board by wire bonding via the printed circuit board.
摘要:
A semiconductor device includes a semiconductor chip, solder balls, a printed wiring substrate on which the semiconductor chip is provided and which serves to electrically connect the semiconductor chip and the solder balls. When such a semiconductor device is mounted on a motherboard, at least one through-aperture is in advance formed on the printed wiring substrate oppositely to the semiconductor chip. After the solder balls are soldered to the motherboard, an under-filler is introduced from either of a space between the semiconductor chip and the printed wiring substrate or a space between the printed wiring substrate and the motherboard, thus flowing from one space into the other space via the through-aperture.
摘要:
A plurality of semiconductor devices can be mounted on a mounting board in a three-dimensional structure by stacking one on another with a simple structure. A semiconductor element is mounted on a first surface of an interposer. Electrode pads connected to the semiconductor element are arranged around the semiconductor element on the first surface of the interposer. Protruding electrodes are provided on the respective electrode pads. Through holes are formed in the interposer so as to extend from a second surface opposite to the first surface of the redistribution substrate to the respective electrode pads. The semiconductor element is encapsulated by a seal resin. Each of the protruding electrodes is higher than the sealed portion of the semiconductor element.
摘要:
A speaker system removably attachable to a video monitor is described which would eliminate the complexity in mounting the speaker system as an add-on unit as well as the ungraceful appearance of the video monitor when the speaker system is removed. The top side of a case incorporating speakers is formed to match the shape of the bottom of the front panel of the video monitor. The speaker system can be mounted on the bottom of the front panel of the video monitor, which is supported on top of a base, as a locking member formed on the top of the case is engaged with a locking hole formed in the bottom of the front panel, or a locking member formed on the bottom of the front panel is engaged with a locking hole formed in the top of the case. Due to lightweight and compact construction, the speaker system can be integrally mounted on the video monitor by using dead space formed between the video monitor and its base and it can be easily removed therefrom.
摘要:
A semiconductor device including a semiconductor element, and leads connected with the semiconductor element. Each of the leads includes an outer lead part for being connected externally. The semiconductor device further includes a plastic package sealing the semiconductor element and the leads. In the semiconductor device, the outer lead part is exposed to the outside of a side face of the plastic package, and the plastic package is mounted on any base in a standing form by the side face contacting the base.
摘要:
A process wherein the parts of a lead frame that are outside a cavity are directly supported by ejecting pins extending from above and from below when the lead frame is sandwiched between an upper die and a lower die. The ejecting pins eject the lead frame, on which a package is formed, after a resin mold process.
摘要:
The present invention user plural driving speeds of the focusing lens component of a zoom lens which responds to plural separate control regions of focal length and object position. In each control region, the focusing lens component is driven in predetermined suitable constant speed. By this operation the object is nearly focused on the focal plane. The slight discrepancy between the image position of the object and the ideal plane is regarded as zero.