55results about How to "Voltage change" patented technology

Conductive lines constituting word lines of memory cells and conductive lines constituting memory cell plate electrodes are formed in the same interconnecting layer in a memory device including a plurality of memory cells each including a capacitor for storing data in an electrical charge form. By forming the capacitors of the memory cells into a planar capacitor configuration, a step due to the capacitors is removed. Thus. a dynamic semiconductor memory device can be formed through CMOS process, and a dynamic semiconductor memory device suitable for merging with logic is achieved. Data of 1 bit is stored by two memory cells, and data can be reliably stored even if the capacitance value of the memory cell is reduced due to the planar type capacitor.

A driving circuit of an electrooptic device includes: a plurality of scanning lines; a plurality of data lines; first and second capacitor lines; a common electrode; pixels; a scanning-line driving circuit; a capacitor-line driving circuit; and a data-line driving circuit. The pixels each include: a pixel switching element; a pixel capacitor disposed between the pixel switching element and the common electrode; and a storage capacitor. When the one scanning line is selected, the capacitor-line driving circuit shifts the voltage of a first (or second) capacitor line corresponding to one scanning line to one of higher and lower levels from a predetermined voltage by a predetermined value, and holds the predetermined voltage after a scanning line apart from the one scanning line by a predetermined number of lines is selected until the one scanning line is selected again.

A flat panel display (FPD) includes: a timing controller configured to supply a mode control signal and a scan control signal; a plurality of pixels coupled to a plurality of scan lines and a plurality of data lines; a data driver for supplying a plurality of data signals to the data lines, and a scan driver coupled to the scan lines and including a plurality of scan integrated circuits (ICs), each of the scan ICs being configured to supply a plurality of scan signals to corresponding ones of the scan lines, wherein the timing controller is configured to select of the scan ICs in accordance with the mode control signal and wherein the timing controller is further configured to control a corresponding scan signal of the scan signals to be supplied to one of the scan lines coupled to the scan IC selected in accordance with the scan control signal.

The present invention provides an appropriately produced magnetic material sensor having a small size.The magnetic material sensor of this invention includes: a magnetoresistive effect film, formed using magnetic films; a current source, for supplying to the magnetoresistive effect film a current having a magnitude and a direction that can change the magnetization directions of the magnetic films; and a detector, for detecting the resistance of the magnetoresistive effect film.

A pressure sensor device includes a substrate having a first section and a second section being adjacent to the first section and thinner than the first section, a piezoelectric film having flexibility and disposed on the second section, an upper electrode formed on the piezoelectric film and including a center electrode disposed at a substantially center of the second section in plan view, and a peripheral electrode disposed apart from the center electrode so as to surround the center electrode, a lower electrode formed between the second section and the piezoelectric film and disposed so as to face the upper electrode, and a detection circuit including a differential circuit electrically connected to the center electrode and the peripheral electrode, and the detection circuit detects a difference between a voltage caused between the center electrode and the lower electrode in response to the piezoelectric film being distorted, and a voltage caused between the peripheral electrode and the lower electrode in response to the piezoelectric film being distorted.

A display apparatus drives a data line on a time division basis. In this process, the data line is driven twice, namely in two modes: a precharge mode and a drive mode. Before the drive mode in which a drive voltage according to display data is supplied to a data line among a set of data lines to be driven on a time division basis, a precharge voltage is supplied at least to a data line adjacent to the data line individually.

A chopper comparator with a novel structure is provided. The comparator includes an inverter, a capacitor, a first switch, a second switch, and a third switch. An input terminal and an output terminal of the inverter are electrically connected to each other through the first switch. The input terminal of the inverter is electrically connected to one of a pair of electrodes of the capacitor. A reference potential is applied to the other of the pair of electrodes of the capacitor through the second switch. A signal potential input is applied to the other of the pair of electrodes of the capacitor through the third switch. A potential output from the output terminal of the inverter is an output signal. A transistor whose channel is formed in an oxide semiconductor layer is used as the first switch.

Conductive lines constituting word lines of memory cells and conductive lines constituting memory cell plate electrodes are formed in the same interconnecting layer in a memory device including a plurality of memory cells each including a capacitor for storing data in an electrical charge form. By forming the capacitors of the memory cells into a planar capacitor configuration, a step due to the capacitors is removed. Thus, a dynamic semiconductor memory device can be formed through CMOS process, and a dynamic semiconductor memory device suitable for merging with logic is achieved. Data of 1 bit is stored by two memory cells, and data can be reliably stored even if the capacitance value of the memory cell is reduced due to the planar type capacitor.

A display driver includes a D / A converter circuit configured to convert display data into a gradation voltage, an amplifier circuit including an input node to which the gradation voltage is input and configured to output data voltage, and a supply circuit configured to supply an auxiliary current or an auxiliary electrical charge to the input node of the amplifier circuit. In an auxiliary period, an output of the D / A converter circuit is in a high impedance state, and the supply circuit supplies the auxiliary current or the auxiliary electrical charge to the input node of the amplifier circuit. In a non-auxiliary period after the auxiliary period, the D / A converter circuit outputs the gradation voltage to the input node of the amplifier circuit.

The drive capability of a logic circuit is improved. The logic circuit includes a first output node, a dynamic logic circuit, a diode-connected first transistor, and a capacitor. The dynamic logic circuit includes a second output node and a plurality of second transistors forming and evaluation circuit. The first transistor and the plurality of second transistors all have one of an n-type conductivity and a p-type conductivity. One terminal of the capacitor is electrically connected to the first output node. The other terminal of the capacitor is electrically connected to the second output node. A first terminal of the first transistor is electrically connected to the first output node. A first voltage is input to a second terminal of the first transistor. The voltage of the first output node is changed by a voltage applied to a back gate of the first transistor.

An electric power converting device can supply a constant voltage to a load while suppressing voltage variation in the AC power source, to reduce breakdown voltages of semiconductor switching elements. The device includes first to third switching element series circuits and at least a first capacitor connected in parallel. One end of the AC power source and one end of the load are connected to each other. Second and third capacitors are connected in parallel to the AC power source side and the load side, respectively. The one end of the power source is connected to a series connection point of the first switching element series circuit through a reactor, the other end of the power source is connected to a series connection point of the second switching element series circuit, and the other end of the load is connected to a series connection point of the third switching element series circuit through another reactor. Change in the power source voltage is compensated by a series converter, which is formed by the second and third switching element series circuits, and change in voltage of the capacitor due to the compensating operation is compensated by charging and discharging operation by a parallel converter formed by the first and second switching element series circuits.

The embodiment of the invention discloses a driving circuit, which comprises a power supply module, a control module, a feedback module, a voltage division module and a load module, wherein the power supply module is connected with the control module, the control module is respectively connected with the feedback module and the voltage division module, the voltage division module is respectively connected with the load module and the feedback module, when the control module detects triggering signals sent by the feedback module, the ratio of the charging time to the discharging time of the voltage division module is regulated, and the voltage division proportion of the voltage division module and the load module is controlled for regulating the voltage value of the load module to be corresponding to the triggering signals. The circuit has the advantages that the voltage division proportion of the voltage module and the load module can be controlled according to the concrete load condition, so that the goal of regulating the voltage value at the two ends of the load module can be achieved.

A pixel circuit includes: a main circuit including: a driving transistor that includes a gate terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node; and an organic light-emitting element connected to the driving transistor and configured to control the organic light-emitting element by controlling a driving current corresponding to a data signal applied via a data line to flow into the organic light-emitting element; and a sub circuit including: a first compensation transistor that includes a gate terminal configured to receive a first gate signal, a first terminal connected to the first node, and a second terminal connected to a fourth node; and a second compensation transistor that includes a gate terminal configured to receive a second gate signal, a first terminal connected to the fourth node, and a second terminal connected to the third node.

A first substrate, a second substrate opposing to the first substrate, and liquid crystal provided in a space between the first substrate and second substrate are provided to an IPS mode liquid crystal display. A plurality of gate lines and a plurality of drain lines, thin film transistors, pixel electrodes, and common electrodes are formed on a transparent substrate in a first substrate. Each of the thin film transistors is provided in a vicinity of the intersection of the gate line and drain line. Each of the pixel electrodes is formed within a pixel region enclosed with an adjacent pair of the gate lines and an adjacent pair of the drain lines. Each of the common electrodes develops an electric field within each of the pixel regions between the pixel electrode and itself. The second substrate includes color layers provided for each of the pixel regions. The color layers are spaced apart from the gate lines and drain lines when seen on a plane.

The present invention provides a battery pack charging control method, which comprises the following steps: during the charging process of a battery pack, each battery voltage and / or the voltage difference between batteries to be balanced in the battery pack are separately compared with corresponding thresholds, if at least one battery voltage reaches the corresponding threshold voltage and / or the voltage difference between the batteries to be balanced reaches the corresponding voltage difference threshold, an equilibrium current is started for discharging of the battery which reaches the corresponding threshold voltage, or for discharging of the high-voltage battery which reaches the voltage difference threshold; during the discharging process of the equilibrium current, a charging switch is controlled to be alternately on and off to reduce the average current of charging; or the voltage drop of the charging switch is increased to enable the charging switch to work in a linear mode, in order to reduce the charging current until the battery voltage decreases to be lower than the corresponding threshold voltage and / or the voltage difference between the batteries to be balanced is reduced to the corresponding voltage difference threshold.

An electric power converting device can supply a constant voltage to a load while suppressing voltage variation in the AC power source, to reduce breakdown voltages of semiconductor switching elements. the device includes first to third switching element series circuits and at least a first capacitor connected in parallel. One end of the AC power source and one end of the load are connected to each other. Second and third capacitors are connected in parallel to the AC power source side and the load side, respectively. The one end of the power source is connected to a series connection point of the first switching element series circuit through a reactor, the other end of the power source is connected to a series connection point of the second switching element series circuit, and the other end of the load is connected to a series connection point of the third switching element series circuit through another reactor. Change in the power source voltage is compensated by a series converter, which is formed byes the second and third switching element series circuits, and change in voltage of the capacitor due to the compensating operation is compensated by charging and discharging operation by a parallel converter formed by the first and second switching element series circuits.

A DC-DC converter is operated in a boost mode by operating a plurality of low-voltage side switches with a first fixed duty cycle (greater than 0.5), with cutting off a plurality of the first high-voltage side switches and a plurality of the second high-voltage side switches, with conducting a plurality of the first diodes of the first high-voltage side switches and a plurality of the second diodes of the second high-voltage side switches, and with alternatively conducting and cutting off a bidirectional switch. In a buck mode, the low-voltage side switches are cut off and a plurality of diodes of the low-voltage side switches are conducted. Furthermore, the first high-voltage side switches are complemented and are operated with a second fixed duty cycle (less than 0.5) while the second high-voltage side switches are conducted and cut off alternatively and the bidirectional switch is switched on and off.

The power supply unit is provided with a power supply circuit adapted to generate an output voltage in accord with an instruction voltage, an output condenser Co connected to the output end of the power supply circuit, and an auxiliary output voltage setting circuit adapted to compare the instruction voltage and the output voltage and to cause the output condenser to discharge its electric charge when the instruction voltage becomes lower than the output voltage. Because of the auxiliary output voltage setting circuit, the power supply circuit quickly generates an output voltage in accord with the instruction voltage if the instruction voltage is lowered.

The invention discloses a phosphorescent compound. The molecular structural general formula of the phosphorescent compound is shown in the specification. After the phosphorescent compound provided bythe invention is used for an organic light-emitting device, the light-emitting efficiency of the device is improved, and the service life is long. According to the preparation method of the phosphorescent compound, the raw materials are easy to obtain, the synthesis process is simple, and the product yield is high. The phosphorescent compound provided by the invention can be applied to an OLED luminescent device, and the voltage, efficiency and service life of the phosphorescent compound are improved compared with those of a known OLED material.

The invention relates to a phosphorescent material and an organic light-emitting device containing the same, and relates to the field of organic light-emitting materials. The structural formula of thephosphorescent material is as shown in the chemical formula 1. According to the phosphorescent material provided by the invention, a specific heterocyclic ligand is selected for coordination, then the wavelength of the compound is adjusted; so that when the obtained organometallic compound is used for an organic light-emitting device, the light-emitting efficiency of the device is improved, and the service life of the device is long. The phosphorescent material disclosed by the invention can be applied to an OLED light emitting device, and compared with a contrast, the voltage, the efficiencyand the service life are improved compared with those of an existing OLED material.

Embodiments of the invention relate to an X-ray CT system. An X-ray tube and an X-ray detector are arranged opposing one another. X-rays are irradiated from the X-ray tube by revolving around the subject. An X-ray image is obtained based on the X-rays that penetrate the subject and are detected by the X-ray detector. The high voltage generator has an inverter that supplies a voltage to the X-ray tube by switching to a predetermined operating frequency during revolution of the X-ray tube. Regarding the frequency adjustable part, the operating frequency of the inverter is adjustable such that it is a multiple of the collection rate, which is the number of X-ray images obtained per one revolution of the X-ray tube. The timing generator may adjust the voltage supplied to the X-ray tube at a timing synchronized with the operating frequency of the inverter.

The power supply unit is provided with a power supply circuit adapted to generate an output voltage in accord with an instruction voltage, an output condenser Co connected to the output end of the power supply circuit, and an auxiliary output voltage setting circuit adapted to compare the instruction voltage and the output voltage and to cause the output condenser to discharge its electric charge when the instruction voltage becomes lower than the output voltage. Because of the auxiliary output voltage setting circuit, the power supply circuit quickly generates an output voltage in accord with the instruction voltage if the instruction voltage is lowered.

The invention relates to a method and a device for operating a drive train (101) of a hybrid vehicle comprising an electrical system (102), the drive train (101) having at least one vehicle drive wheel (105) in addition to one first electrical machine (104) and the first electrical machine (104) being connected to the electrical system (102). According to the invention, in order to stabilise the voltage of the electrical system (102), the first electrical machine (104) is operated without being coupled to the drive wheels (105) of the hybrid vehicle.

The super-large capacity auto voltage-regulating transformer has constant magnetic flux body with common winding, exciting winding I and voltage regulating winding on its iron core column, and variant magnetic flux body with exciting winding II and serial winding on its iron core column. It has the serial connection of common winding and serial winding, and the serial connection of exciting winding I, exciting winding II and voltage regulating winding. The voltage regulating winding may have 9 or 17 taps connected via two way switch with exciting winding I and exciting winding II; and the turn number ratio between the exciting winding II and the serial winding is 0.8-2.0. The present invention regulates the winding work turn number and magnetic field direction via changing the live switch, and has raised capacity of resisting high vibration potential caused by lightning shock wave.

The invention provides a multi-anode electric field synthesis device which comprises an electrolytic tank, an electrolytic tank cover, a plurality of anodes and a plurality of cathodes. The anodes andthe cathodes are arranged in the electrolytic tank, an electrolytic power supply is connected between the anodes and the cathodes, the electrolytic tank cover is located at the top of the electrolytic tank and detachably mounted on the electrolytic tank, and the plurality of anodes are connected in parallel to a positive electrode of a power supply through wires; and a plurality of tracks are arranged on the electrolytic tank cover, and the plurality of anodes are movably arranged on the tracks. A plurality of metal anodes are adopted, different metals can be dissolved in a same solution through parallel electric fields, and dissolved metal ions are reduced into nanoparticles through an electrolyte solution (containing reducing substances); and meanwhile, the carbon rod cathodes are stripped into graphene to be dispersed into the solution, so that the multi-metal nanoparticles are loaded, and the multi-metal / graphene composite material is synthesized.

A memory array includes an N×M array of memory cells, each memory cell having a first transistor connected to a first terminal and a second transistor connected in parallel to the first transistor and a second terminal, where the first and second transistors share a common floating gate and a common output node. Each memory cell further includes an access transistor connected in series to the common output node and a low voltage terminal, the access transistor configured to trigger hot-carrier injection to the common floating gate to change a voltage of the common floating gate. The first transistor is an n-type transistor and the second transistor is a p-type transistor.