摘要:
A charge transfer device including a charge input portion for inputting a reference charge, a charge transfer portion for receiving and transferring the reference charge, and a conversion portion converting the reference charge outputted from the charge transfer portion into a reference voltage. The reference charge input portion may be arranged to generate a reference charge. Alternatively, the reference charge may be externally generated. The charge transfer device may further include a signal charge input portion for inputting signal charges to the charge transfer portion. The signal charge input portion may be arranged to generate signal charges corresponding to incident light. Signal charges externally generated may be inputted to the signal charge input portion. The charge transfer device enables a charge-output voltage characteristic to be accurately detected at all times without any problem. It is also possible to accurately control the charge-output voltage characteristic.
摘要:
A charge transfer device formed on a semiconductor substrate comprising: a charge transfer section formed on the semiconductor substrate for transferring charges, a floating gate having a floating gate diffusion layer formed on the semiconductor substrate for accumulating the charges transferred from the charge transfer section, an output gate section formed between the charge transfer section and the floating gate on the semiconductor substrate, and a charge detecting circuit electrically connected to the floating gate for outputting a voltage corresponding to the amount of the charges accumulated in the floating gate diffusion layer, the output gate section having a first output gate region adjacent to the charge transfer means and a second output gate region adjacent to the floating gate diffusion layer, the first output gate region having a first output gate electrode formed thereon with an insulating film therebetween, the second output gate region having a second output gate electrode formed thereon with an insulating film therebetween, a dc voltage being applied to the gate electrode, and an output voltage being applied to the second output gate electrode from the charging detecting circuit.
摘要:
A charge-coupled device has a multi-layer structure insulating layer is formed beneath a transfer electrode, floating electrodes and an electrode adjacent the floating electrodes so that pin hole phenomenon in a charge transfer section of the charge coupled device can be successfully prevented. On the other hand, a sole-layer structure insulating layer is formed beneath a gate electrode of a peripheral component so that a threshold voltage of the gate electrode of the peripheral component can be successfully controlled at a desired value.
摘要:
A charge transfer device, suitable for use, for example, in a solid state imager device, having a floating gate electrode in a charge detecting section, a protruding portion provided in at least one of the floating gate electrodes or a gate electrode arranged adjacent to the floating gate electrode, wherein the floating gate electrode and the gate electrode arranged adjacent to the floating gate electrode overlap each other at the protruding portion within an insulating layer, and whereby the parasitic capacitance associated with the floating gate electrode is decreased and the charge voltage converting gain is increased, rendering it possible to obtain an image signal with a good signal/noise ratio, when the charge transfer device is used for a solid state imager device.
摘要:
A display apparatus includes: at least one pixel section including a display cell that has a pixel electrode and a light-receiving cell that has a light-receiving element; and a shielding electric conductor configured to electrically shield the pixel electrode on the side of the display cell from the light-receiving element. The shielding electric conductor is formed between the pixel electrode and the light-receiving element and has a fixed potential.
摘要:
A comparator which can operate stably against an absolute value distribution of a threshold voltage among MOS transistors and has a wide allowable range against the threshold voltage dispersion and besides allows reduction in power consumption. The comparator employs a single MOS transistor, and a resistance element is connected between the drain electrode of the MOS transistor and a power supply. A capacitor is connected between the gate electrode of the MOS transistor and a dc potential point, and a switch is connected between the gate electrode and the drain electrode. A comparison reference level and comparison input data are inputted in a time series to the source electrode of the MOS transistor, and the MOS transistor performs a comparation operation.
摘要:
A linear sensor for sampling vertically opposed pixels of a plurality of vertically arranged sensor rows substantially at a time. A plurality of horizontal transfer registers and a plurality of shift gates are provided to oppose the plurality of sensor rows. A vertical transfer register is provided at one end of the plurality of horizontal transfer registers. In the vertical transfer register, the signal charges which have been transferred by the plurality of horizontal transfer registers are transferred sequentially in vertical direction. A charge/voltage converter unit is provided at the output of the vertical transfer register. The signal charges accumulated in the vertically opposed pixels are sequentially transferred to the charge/voltage converter unit in a repetitive manner.
摘要:
A control circuit generates a control signal which is of a low level during a certain period of time after the power supply of a solid state imager has been turned on or a power save mode thereof has been canceled, and of a high level after elapse of the period of time. Based on the control signal, a timing generator generates transfer clock signals having a high frequency than when the solid state imager is in a normal transfer mode, and applies the transfer clock signals to a CCD shift register to remove or transfer excessive invalid charges at a high rate therefrom. After the power supply has been turned on or the power save mode has been canceled, therefore, the time required to bring the solid state imager into a condition capable of imaging a subject is shortened.
摘要:
A charge transfer device formed on a semiconductor substrate comprising: a charge transfer section formed on the semiconductor substrate for transferring charges, a floating gate having a floating gate diffusion layer formed on the semiconductor substrate for accumulating the charges transferred from the charge transfer section, an output gate section formed between the charge transfer section and the floating gate on the semiconductor substrate, and a charge detecting circuit electrically connected to the floating gate for outputting a voltage corresponding to the amount of the charges accumulated in the floating gate diffusion layer, the output gate section having a first output gate region adjacent to the charge transfer means and a second output gate region adjacent to the floating gate diffusion layer, the first output gate region having a first output gate electrode formed thereon with an insulating film therebetween, the second output gate region having a second output gate electrode formed thereon with an insulating film therebetween, a dc voltage being applied to the gate electrode, and an output voltage being applied to the second output gate electrode from the charging detecting circuit.
摘要:
A charge transfer device is disclosed. The charge transfer device has: a charge transfer section for outputting a signal charge; a voltage signal output circuit for converting the signal charge into a voltage and outputting a voltage signal; a reference signal output circuit for outputting a reference signal of a predetermined voltage, the reference signal output circuit having a circuit constant substantially equal to a circuit constant of the voltage signal output circuit; and a differential operational amplifying circuit for amplifying a difference between the voltage signal from the voltage signal output circuit and the reference signal from the reference signal output circuit and outputting the amplified difference.