Abstract: According to one embodiment, a display device includes a display region where pixels are arranged. Each of the pixels includes a pixel electrode, a light emitting element, a drive transistor, a first capacitance electrode layer opposed to the pixel electrode and held at a constant potential, and an insulating layer forming an auxiliary capacitance together with the pixel electrode and the first capacitance electrode layer. A value of the auxiliary capacitance of the first pixel, of the values of the auxiliary capacitance of the pixels is the largest.

Abstract: According to one embodiment, a display device includes a pixel circuit provided in each of a plurality of pixels, a plurality of flip-flop circuits provided in a shift register and a reset element provided in each of the flip-flop circuits, and the reset element is an n-channel type transistor, the pixel circuit includes a light emitting element, a light emitting power supply and a switch element, and the light emitting element is disconnected from the light emitting power supply while the light emitting power supply is rising.

Abstract: An inductance component has a given value causing a time constant of a circuit composed of one of first and second routes in which an abnormality does not occur and a connection path connecting the first and second routes not to allow a voltage of one of loads disposed in the other one of the routes to decrease to less than a lower limit of an operating voltage of one of loads during a shut-off period, which starts from a time when it is determined by an abnormality determiner that an abnormality has occurred in any one of the first route and the second route to a time when an inter-route switch enters a switched off state upon receiving a switch-off command from a state controller.

Abstract: According to one embodiment, a display device includes a base, a plurality of pixels, a power supply line and a power supply line drive circuit. The pixels each include a pixel circuit, a display element including a lower electrode, an upper electrode and an organic layer including a light-emitting layer. The upper electrode is connected to the power supply line that provides a predetermined potential to the upper electrode. The power supply line drive circuit supplies, to the power supply line, a first potential to the upper electrode during a light-emitting period and supplies, to the power supply line, a second potential to the upper electrode during a non-light-emitting period.

Abstract: A power supply system includes: an inter-load switch including a first switch and a second switch connected in series, a voltage generation unit, an electric storage device connected between the first switch and the second switch, a first state control unit configured to select a first state in which power is supplied from at least one of the voltage generation unit or the electric storage device to a first load and a second load, and a second state control unit configured to, when determining that a failure has occurred, select a second state in which power is supplied from the electric storage device to a load on a side of a no-failure-occurrence system in which no failure has occurred, by turning off a switch on a side of a failure-occurrence system in which a failure has occurred and turning on a switch on a side of the no-failure-occurrence system.

Abstract: According to one embodiment, a display device includes a display region where pixels are arranged. Each of the pixels includes a pixel electrode, a light emitting element, a drive transistor, a first capacitance electrode layer opposed to the pixel electrode and held at a constant potential, and an insulating layer forming an auxiliary capacitance together with the pixel electrode and the first capacitance electrode layer. A value of the auxiliary capacitance of the first pixel, of the values of the auxiliary capacitance of the pixels is the largest.

Abstract: A power supply system includes: a first system having a first power supply; a second system having a second power supply; and an inter-system switch provided in a connection path connecting the first and second systems. First and second paths are provided in parallel between a connection point, at which the connection path is connected with the second system, and the second power supply. The power supply system further includes: a charging unit provided in the first path to charge, with the inter-system switch closed, a storage battery of the second power supply; a discharge restriction unit provided in the second path to restrict discharge of the storage battery; an abnormality determination unit that determines whether an abnormality has occurred in the discharge restriction unit; and a use restriction unit that restricts use of the second power supply upon determination that an abnormality has occurred in the discharge restriction unit.

Abstract: According to one embodiment, a display device includes a base, a plurality of pixels, a power supply line and a power supply line drive circuit. The pixels each include a pixel circuit, a display element including a lower electrode, an upper electrode and an organic layer including a light-emitting layer. The upper electrode is connected to the power supply line that provides a predetermined potential to the upper electrode. The power supply line drive circuit supplies, to the power supply line, a first potential to the upper electrode during a light-emitting period and supplies, to the power supply line, a second potential to the upper electrode during a non-light-emitting period.

Abstract: Different groups include the same type of control lines. The first control lines are arranged such that control lines of different types belonging to each of group are adjacent to each other. In the second area, the second control lines are arranged such that control lines of different types belonging to each group are adjacent to each other. In the non-display area, the second control lines are arranged such that control lines of the same type belonging to different groups are adjacent to each other. The capacitor electrode includes portions connected to each other and arranged in the second direction. Each portion faces each other for control lines of the same type adjacent in the non-display area. Any of the portions and any of the other portions differ in width in the first direction.

Abstract: A power source system has a first system having a first power supply path and a first power source supplying a power source voltage, a second system having a second power supply path and a second power source having a battery being charged by the power source voltage, an intersystem switch, a switching controller switching the intersystem switch between an open state and a closed state, and a charging discharging part, arranged between the second power source and a connection node of a connection path on the second power supply path. The charging discharging part performs charging of the battery by the power source voltage and discharging of the battery based on a discharging request after completion of battery charging, and performs charging of the battery before the switching controller switches the intersystem switch to the open state from the closed state when overvoltage occurs in any system under the closed state of the intersystem switch.

Abstract: A power supply system which includes a first system, a second system, and a system-to-system switch. The first system delivers electrical power from a first power supply to an electrical load through a first power feeding path. The second system delivers electrical power from a second power supply to the electrical load through a second power feeding path. The system-to-system switch is arranged in a connecting path which connects the first and second power feeding paths together. The power supply system also has an in-system switch which is disposed in the second power feeding path between a junction of the second power feeding path and the connecting path and the second power supply. When it is determined that a malfunction has occurred in the second system in a condition where the system-to-system switch and the in-system switch are closed, the system-to-system switch is opened.

Abstract: A bootstrap circuit includes a first transistor including a gate electrode, a first and a second electrodes, a capacitor connected between the gate electrode and the second electrode, and a second transistor connected to the gate electrode. In a first period, the second transistor is turned on and the gate electrode is supplied with a first analog voltage, the first transistor is turned on, and the second electrode is supplied with a precharge voltage smaller than the first analog voltage from the first electrode. In a second period, the second transistor is turned off, the first electrode is supplied with a second analog voltage, the capacitor supplies a third analog voltage to the gate electrode in response to the first analog voltage and the second analog voltage, and the second electrode is supplied with the second analog voltage from the first electrode.

Abstract: According to one embodiment, a display device includes a display region where pixels are arranged. Each of the pixels includes a pixel electrode, a light emitting element, a drive transistor, a first capacitance electrode layer opposed to the pixel electrode and held at a constant potential, and an insulating layer forming an auxiliary capacitance together with the pixel electrode and the first capacitance electrode layer. A value of the auxiliary capacitance of the first pixel, of the values of the auxiliary capacitance of the pixels is the largest.

Abstract: A power system has: an electrical load; first and second lines respectively including first and second power sources; and inter-line switch. The first power source outputs a power supply voltage. The second power source includes a storage battery. The power system includes: an anomaly determination unit determining an anomaly in the first line; a state control unit opening the inter-line switch if the occurrence of an anomaly is determined; first and second paths in parallel to each other between a connection point to the connection path and the second power source in the second line; a charging unit on the first path to charge the storage battery to a higher voltage than the power supply voltage of the first power source; and a discharge regulation unit on the second path to regulate discharge of the storage battery in the second line.

Abstract: A power supply system includes: electrical loads; a first system including a first power supply that outputs a power supply voltage; a second system including a second power supply that includes a storage battery; an inter-system switch; an abnormality determination unit that determines whether an abnormality has occurred in the first system; and a state control unit that opens the inter-system switch when it is determined that an abnormality has occurred in the first system. A first path and a second path are provided in parallel with each other between a connection point and the second power supply. In the first path, there is provided an electric power converter. The storage battery is charged to a voltage higher than the lower limit of drive voltages of the electrical loads. Through the second path, the voltage of the storage battery can be applied, bypassing the power converter, to the electrical loads.

Abstract: In a power supply system, a first system includes a first power supply connected to a first load. A second system includes a second power supply connected to a second load. A connection path connects the systems. An intersystem switch is provided on the connection path. A control apparatus sets the intersystem switch to a closed state and sets a voltage of the first power supply to be higher than a voltage of the second power supply to be a first state in which power supply is performed from the first power supply to the loads. In response to a reverse-direction current from the second system to the first system flowing to the connection path in the first state, the control apparatus sets the intersystem switch to an open state to be a second state in which power supply is performed from the second power supply to the second load.

Abstract: Provided is a display device including: a capacitor having a first electrode, a first insulating film over the first electrode, and a second electrode over the first insulating film; and a first transistor over the capacitor. The first transistor includes the second electrode, a second insulating film over the second electrode, an oxide semiconductor film over the second insulating film, and a first source electrode and a first drain electrode over the oxide semiconductor film. The first source electrode and the first drain electrode are electrically connected to the oxide semiconductor film.

Abstract: According to one embodiment, a display device includes a display region where pixels are arranged. Each of the pixels includes a pixel electrode, a light emitting element, a drive transistor, a first capacitance electrode layer opposed to the pixel electrode and held at a constant potential, and an insulating layer forming an auxiliary capacitance together with the pixel electrode and the first capacitance electrode layer. A value of the auxiliary capacitance of the first pixel, of the values of the auxiliary capacitance of the pixels is the largest.

Abstract: Provided is a display device including: a capacitor having a first electrode, a first insulating film over the first electrode, and a second electrode over the first insulating film; and a first transistor over the capacitor. The first transistor includes the second electrode a second insulating film over the second electrode, an oxide semiconductor film over the second insulating film, and a first source electrode and a first drain electrode over the oxide semiconductor film. The first source electrode and the first drain electrode are electrically connected to the oxide semiconductor film.

Abstract: In a power supply system, a first route includes a first power supply connected to a first load. A second route includes a second power supply connected to a second load. A connection path connects the first and second routes at a connection point. The first power supply includes a voltage generator generating an operating voltage operating the first and second loads. The second power supply includes an electrical storage device charging based on power supplied from the voltage generator. A switching circuit includes a first switch having a diode component with an anode and a cathode being directed to the electrical storage device and the connection path, respectively, and is disposed between the connection point and the electrical storage device. A switch state controller outputs a switch-off command to the first switch when the electrical storage device is in the fully charged condition.