Abstract: An image display apparatus comprises a pixel having a drive transistor and a pixel display element which are connected in series between a first power line and a second power line, a holding capacitor connected to a gate electrode of the drive transistor, and a selection transistor connected between a signal line and the gate electrode of the drive transistor. When the selection transistor is turned on, gradation pixel data is written in the holding capacitor from the signal line. The charge of gradation pixel data written in the holding capacitor is discharged for a certain period through the drive transistor, thereafter the charge of the gradation pixel data stored in the holding capacitor is held by floating the gate electrode of the drive transistor.

Abstract: There is provided a light receiver including a photodiode converting an optical signal into an electrical signal, and a plurality of amplifiers respectively having different gains, each input end of the plurality of amplifiers being connected to one end of the photodiode, and one of the plurality of amplifiers being in operating state for outputting an output signal. At least one of the plurality of amplifiers and the photodiode are connected through a diode.

Abstract: An image display apparatus comprises a pixel having a drive transistor and a pixel display element which are connected in series between a first power line and a second power line, a holding capacitor connected to a gate electrode of the drive transistor, and a selection transistor connected between a signal line and the gate electrode of the drive transistor. When the selection transistor is turned on, gradation pixel data is written in the holding capacitor from the signal line. The charge of gradation pixel data written in the holding capacitor is discharged for a certain period through the drive transistor, thereafter the charge of the gradation pixel data stored in the holding capacitor is held by floating the gate electrode of the drive transistor.

Abstract: An image display apparatus comprises a pixel having a drive transistor and a pixel display element which are connected in series between a first power line and a second power line, a holding capacitor connected to a gate electrode of the drive transistor, and a selection transistor connected between a signal line and the gate electrode of the drive transistor. When the selection transistor is turned on, gradation pixel data is written in the holding capacitor from the signal line. The charge of gradation pixel data written in the holding capacitor is discharged for a certain period through the drive transistor, thereafter the charge of the gradation pixel data stored in the holding capacitor is held by floating the gate electrode of the drive transistor.

Abstract: An image display apparatus comprises a pixel having a drive transistor and a pixel display element which are connected in series between a first power line and a second power line, a holding capacitor connected to a gate electrode of the drive transistor, and a selection transistor connected between a signal line and the gate electrode of the drive transistor. When the selection transistor is turned on, gradation pixel data is written in the holding capacitor from the signal line. The charge of gradation pixel data written in the holding capacitor is discharged for a certain period through the drive transistor, thereafter the charge of the gradation pixel data stored in the holding capacitor is held by floating the gate electrode of the drive transistor.

Abstract: A light receiving circuit according to the present invention includes a current control voltage generation circuit 10 outputting control voltages Vcont1 and Vcont2, a first current adjusting circuit 11 generating a first output current Io1 by regulating a first input current Ii1 depending on a voltage difference of the control voltages Vcont1 and Vcont2, the first input current Ii1 generated by adding a first reference current Ia1 and an input current Ipd, a second current adjusting circuit 12 generating a second output current Io2 by regulating a second reference current Ia2 depending on the voltage difference of the control voltages Vcont1 and Vcont2, and a current voltage conversion circuit 13 generating a first output voltage Vo1 by converting the first output current Io1 to voltage based on a first resistance Rf1 and generating a second output voltage Vo2 by converting the second output current Io2 to voltage based on a second resistance Rf2.

Abstract: A wire wound electronic part includes a core having a wire wound core and flanges formed on both ends thereof, a coil conductor wound around the wire wound core and terminal electrodes disposed at the bottom of the flange, in which both ends of the coil conductor are conductively connected to the terminal electrodes by a solder, wherein a pair of grooves are formed at the bottom crossing the wire wound core of one of the flanges. The groove has a bottom and side walls disposed being slanted on both sides thereof, in which the vertical height for the side wall is formed larger than the length for the bottom of the side wall. The terminal electrodes are contained in the groove, and edge portion in the lateral direction of the terminal electrode is restricted by the side wall of the groove.

Abstract: A wire wound electronic part includes a core having a wire wound core and flanges formed on both ends thereof, a coil conductor wound around the wire wound core and terminal electrodes disposed at the bottom of the flange, in which both ends of the coil conductor are conductively connected to the terminal electrodes by a solder, wherein a pair of grooves are formed at the bottom crossing the wire wound core of one of the flanges. The groove has a bottom and side walls disposed being slanted on both sides thereof, in which the vertical height for the side wall is formed larger than the length for the bottom of the side wall. The terminal electrodes are contained in the groove, and edge portion in the lateral direction of the terminal electrode is restricted by the side wall of the groove.

Abstract: One inventive aspect relates to a low back type loop type coil part which may facilitate confirmation of quality of soldering. The loop type coil part comprises a core including a spool arranged vertically to a mounting side and a plate-like flange provided at an end of the spool to come in contact with the mounting side. A coil lead is wound around the spool, and an end of the coil lead is soldered and fixed to a terminal electrode of a bottom surface of the flange. A protruding part is provided at a part of a side surface of the flange in a length direction. A recess is formed in the bottom surface of the flange so as to be in contact with the protruding part of the side surface and a non-protruding part adjacent to the protruding part. The terminal electrode is provided to be continuous across an inner wall surface of the recess, a bottom surface of the protruding part, and a bottom surface of the non-protruding part.

Abstract: A current-control-type light emitting display in which a reverse current can be supplied to a light emitting element without requiring a negative power supply and without being passed through a forward drive section. A first electrode of the light emitting element is connected via a first switching device to a second power supply line set to 0 V, and is connected to a drive section via a second switching device. A second electrode of the light emitting element is connected to a third power supply line selectively connected to a voltage source from which an arbitrary positive voltage is supplied or another voltage source from which 0 V is supplied. A reverse current is supplied to the light emitting device by setting the potential on the first electrode of the light emitting element equal to the potential on the second power supply line and by setting the potential on the second electrode equal to the potential on the third power supply line from which an arbitrary positive voltage is supplied.

Abstract: A light receiving circuit according to the present invention includes a current control voltage generation circuit 10 outputting control voltages Vcont1 and Vcont2, a first current adjusting circuit 11 generating a first output current Io1 by regulating a first input current Ii1 depending on a voltage difference of the control voltages Vcont1 and Vcont2, the first input current Ii1 generated by adding a first reference current Ia1 and an input current Ipd, a second current adjusting circuit 12 generating a second output current Io2 by regulating a second reference current Ia2 depending on the voltage difference of the control voltages Vcont1 and Vcont2, and a current voltage conversion circuit 13 generating a first output voltage Vo1 by converting the first output current Io1 to voltage based on a first resistance Rf1 and generating a second output voltage Vo2 by converting the second output current Io2 to voltage based on a second resistance Rf2.

Abstract: A receiver circuit includes a photodiode, a first amplifier to convert a current of the photodiode into a voltage, a second amplifier to adjust an offset voltage of the first amplifier and a control unit to control on/off of an offset voltage adjustment function of the second amplifier. The control unit turns off the offset voltage adjustment function of the second amplifier in a predetermined period after power on.

Abstract: A surface-mounting choke coil has a resin coating material with magnetic powder which is filled a space between the upper flange and the lower flange of a drum-type ferrite core, while covering the circumferential of the winding. The resin coating material with magnetic powder has a glass transition temperature Tg of about ?20° C. or lower, more preferably about ?50° C. or lower in a course of transferring from a glass state to a rubber state during changing of shear modulus with respect to temperature as a physical property when hardening, and the thickness of the upper flange of the drum-type ferrite core is about 0.35 mm or less, and a value of a ratio L2/L1 of an outer diameter L2 of the upper flange to a diameter L1 of the winding core of the drum-type ferrite core is about 1.9 or more.

Abstract: A precharge circuit is provided with an N-channel transistor intended for switching. A reference potential is applied to either one of the source and drain of this N-channel transistor. The other of the source and drain is connected to a node. A precharge signal is applied to the gate of the N-channel transistor. The reference potential is set to a precharge output potential for the case of displaying black on a pixel, i.e., the potential when a minimum current flows through a P-channel transistor connected to the other of the source and drain of the N-channel transistor.

Abstract: A surface-mounting choke coil has a resin coating material with magnetic powder which is filled a space between the upper flange and the lower flange of a drum-type ferrite core, while covering the circumferential of the winding. The resin coating material with magnetic powder has a glass transition temperature Tg of about ?20° C. or lower, more preferably about ?50° C. or lower in a course of transferring from a glass state to a rubber state during changing of shear modulus with respect to temperature as a physical property when hardening, and the thickness of the upper flange of the drum-type ferrite core is about 0.35 mm or less, and a value of a ratio L2/L1 of an outer diameter L2 of the upper flange to a diameter L1 of the winding core of the drum-type ferrite core is about 1.9 or more.

Abstract: One inventive aspect relates to a low back type loop type coil part which may facilitate confirmation of quality of soldering. The loop type coil part comprises a core including a spool arranged vertically to a mounting side and a plate-like flange provided at an end of the spool to come in contact with the mounting side. A coil lead is wound around the spool, and an end of the coil lead is soldered and fixed to a terminal electrode of a bottom surface of the flange. A protruding part is provided at a part of a side surface of the flange in a length direction. A recess is formed in the bottom surface of the flange so as to be in contact with the protruding part of the side surface and a non-protruding part adjacent to the protruding part. The terminal electrode is provided to be continuous across an inner wall surface of the recess, a bottom surface of the protruding part, and a bottom surface of the non-protruding part.

Abstract: A surface-mounting choke coil has a resin coating material with magnetic powder which is filled a space between the upper flange and the lower flange of a drum-type ferrite core, while covering the circumferential of the winding. The resin coating material with magnetic powder has a glass transition temperature Tg of about ?20° C. or lower, more preferably about ?50° C. or lower in a course of transferring from a glass state to a rubber state during changing of shear modulus with respect to temperature as a physical property when hardening, and the thickness of the upper flange of the drum-type ferrite core is about 0.35 mm or less, and a value of a ratio L2/L1 of an outer diameter L2 of the upper flange to a diameter L1 of the winding core of the drum-type ferrite core is about 1.9 or more.

Abstract: There is provided a light receiver including a photodiode converting an optical signal into an electrical signal, and a plurality of amplifiers respectively having different gains, each input end of the plurality of amplifiers being connected to one end of the photodiode, and one of the plurality of amplifiers being in operating state for outputting an output signal. At least one of the plurality of amplifiers and the photodiode are connected through a diode.

Abstract: A surface-mounting choke coil has a resin coating material with magnetic powder which is filled a space between the upper flange and the lower flange of a drum-type ferrite core, while covering the circumferential of the winding. The resin coating material with magnetic powder has a glass transition temperature Tg of about ?20° C. or lower, more preferably about ?50° C. or lower in a course of transferring from a glass state to a rubber state during changing of shear modulus with respect to temperature as a physical property when hardening, and the thickness of the upper flange of the drum-type ferrite core is about 0.35 mm or less, and a value of a ratio L2/L1 of an outer diameter L2 of the upper flange to a diameter L1 of the winding core of the drum-type ferrite core is about 1.9 or more.

Abstract: An image display apparatus comprises a pixel having a drive transistor and a pixel display element which are connected in series between a first power line and a second power line, a holding capacitor connected to a gate electrode of the drive transistor, and a selection transistor connected between a signal line and the gate electrode of the drive transistor. When the selection transistor is turned on, gradation pixel data is written in the holding capacitor from the signal line. The charge of gradation pixel data written in the holding capacitor is discharged for a certain period through the drive transistor, thereafter the charge of the gradation pixel data stored in the holding capacitor is held by floating the gate electrode of the drive transistor.