Abstract:
A photoelectric converter has a first semiconductor region having a first conductivity type, a pixel region for accumulating generated carriers, a second semiconductor region having a second conductivity type disposed within the first semiconductor region and inside the pixel region, an electrode region having the second conductivity type disposed on the second semiconductor region, and an oxide film disposed around the electrode region. A first aluminum wiring contacts the electrode region via a contact hole disposed in an intermediate insulating film for transforming a signal according to a quantity of the generated carriers accumulated in the pixel region. A second aluminum wiring encircles an outer periphery of the pixel region and is held at a predetermined constant potential. A transparent conductive film is disposed on the oxide film and inside the second semiconductor region and contacts the second aluminum wiring.
Abstract:
To provide a photoelectric conversion device with low noise at low cost. The photoelectric conversion device includes: a plurality of photoelectric conversion circuits whose output potentials change according to an amount of incident light; a plurality of reset circuits each connected to an output of each of the photoelectric conversion circuits; a plurality of amplification circuits for amplifying the output potentials of the photoelectric conversion circuits, the amplification circuits each being connected to the output of each of the photoelectric conversion circuits; a plurality of signal read circuits for reading the outputs from the amplification circuits; and a plurality of holding circuits for temporarily holding the read outputs from the amplification circuits.
Abstract:
The information terminal body may be designed to foldably pivot a pair of flat cases each having a display unit through a hinge which is equipped with a photographing optical system for the camera function unit of which optical axis of lens is perpendicular to an axial center of the hinge. The display units display information from communication channels and images taken in by the camera. The cases may have the display units such that the display units face outside in a folded state. At least one of the two display units may be a finder for photographers, while the other may be a finder for the subject persons. The terminal is equipped with a shutter button and a terminal operation button. The terminal operation button works also as a shutter button. The information terminal is also equipped with a viewfinder for the camera lens system.
Abstract:
A work vehicle has an engine (1), a PTO shaft (6, 7) driven by power from the engine, an operator's seat (19), an operator's presence sensor (26) for detecting presence/absence of an operator at the operator's seat, and an automatic engine stop unit (39) operable to automatically stop the engine in response to detection of the operator's absence at the operator's seat. The work vehicle includes a utility member (A) for the vehicle selectively movable between a use position and a non-use position, a non-use state detecting sensor (27) for detecting movement of the utility member to the non-use position, and an override unit (40) operable to override the automatic engine stop function of the automatic engine stop unit, the override unit providing an override signal to the automatic engine stop unit in response to detection by the non-use state detecting sensor of the movement of the utility member to the non-use position.
Abstract:
To eliminate the influence of radiation noise, which drops the image quality of a photoelectric converter, at a low cost without sacrificing an opening portion of a light receiving element. A photoelectric converter includes: a first semiconductor region of a first conductive type which is formed within a pixel region; a second semiconductor region of a second conductive type which is formed within the first semiconductor region and in which optically generated carriers can be accumulated; and a conductor which is formed through an insulator on the second semiconductor region and held at a predetermined potential.
Abstract:
To eliminate a residual image due to residual charge in an image sensor circuit and provide an effective bright-time output, the image sensor is provided with a reset switch connected to a photodiode. After the potential of the photodiode is held through a first amplifier in two holding circuits as an image signal and an initial signal, the initial signal and the image signal are sequentially output through a second amplifier. By resetting the photodiode to a desired potential to produce an initial signal, a residual image can be eliminated.
Abstract:
A light receiving element is provided with a phototransistor and a light receiving MOS diode proximate thereto and having a gate electrode covering a portion of the base region of the phototransistor. The gate electrode permits transmission of a portion of received light. The light receiving MOS diode forms an inversion layer in a substrate adjacent the base of a phototransistor during the time photo charges are stored, and generated photo charges are stored in the inversion region and the base region of the phototransistor. During the storage state, the potential of the inversion region and the base region of the phototransistor is limited, so that the intensity of an electric field applied to an insulating film between the electrode and the semiconductor substrate is 0.7 MV/cm or less. Alternatively, the potential of the electrode in a waiting state is fixed or made floating, so that an electric field is not applied, and recombination at the surface of the semiconductor substrate is made stable.
Abstract:
An alignment mark which is employed for the alignment of a semiconductor substrate during a lithography process in the production of a semiconductor element, includes a trough-like pattern having a width roughly equal to the width of a circuit element provided at the surface of the semiconductor substrate. Since the width of the trough-like pattern is set roughly equal to that of the circuit element, a secure trough-like pattern that will not be removed to an excessive degree during processes such as etch-back is formed at the surface of the semiconductor substrate, even if the alignment mark is formed concurrently with the formation of the circuit element. Consequently, a clear alignment mark that can be produced concurrently with the formation of a circuit element of the semiconductor circuit element and that presents no risk of collapsing or separating, is provided.
Abstract:
A friction clutch mounted in a transmission case (25) or the like and connected between a drive shaft (14) for receiving engine power and a driven shaft (15) for receiving power from the drive shaft and transmitting the power to a power takeoff shaft (11). The friction clutch includes a first sleeve (17) connected to the drive shaft, a second sleeve (16) connected to the driven shaft, friction disks (18, 19) disposed between the first sleeve and the second sleeve, the friction disks being switchable between a clutch engaging state to enable power transmission between the first sleeve and the second sleeve, and a clutch disengaging state to disable the power transmission, and a clutch piston (20) movable between a first position to place the friction disks in the clutch engaging state, and a second position to place the friction disks in the clutch disengaging state. The friction clutch further includes a brake mechanism (B) for braking rotation of the driven shaft when the friction disks are in the clutch disengaging state. The brake mechanism includes a first braking member (26) operatively connected to the clutch piston, and a second braking member (24) for contacting the first braking member when the clutch piston is moved to the second position. The second braking member is rotatable through a predetermined range with the first braking member.
Abstract:
The image sensor is comprised of an array of operative bipolar transistors. Another array of optically shielded dummy bipolar transistors are formed adjacently to the operative bipolar transistors. Reset switches are connected to base regions of the operative and dummy bipolar transistors so as to reduce variation in dark image output, to ensure linearity of output signal, and to eliminate image storage.