Abstract: A power supply system includes a system control unit, an auxiliary power supply, and an auxiliary-power-supply control unit. The system control unit and the auxiliary-power-supply control unit are configured such that information of at least one control unit of the system control unit and the auxiliary-power-supply control unit is able to be output to another control unit of the system control unit and the auxiliary-power-supply control unit. The at least one control unit is configured to output information indicating that an operation of the at least one control unit is stopped to the other control unit when the at least one control unit stops the operation of the at least one control unit.

Abstract: The present invention provides a (meth)acrylic acid-producing method capable of suppressing formation of carbides so that the production yield of (meth)acrylic acid is enhanced. In such a method, (meth)acrylic acid is produced through gas-phase catalytic oxidation reactions of (meth)acrolein by using molecular oxygen in a fixed-bed reactor configured to have a packed layer containing a packing material and a catalyst layer formed with a catalyst containing at least molybdenum and vanadium. The packed layer contains a packing material that has been used at least once for above gas-phase catalytic oxidation reactions, and the catalyst is present in the packed layer at 0.001˜0.15 mass % of the total amount of the packing material.

Abstract: The present invention provides a (meth)acrylic acid-producing method capable of suppressing formation of carbides so that the production yield of (meth)acrylic acid is enhanced. In such a method, (meth)acrylic acid is produced through gas-phase catalytic oxidation reactions of (meth)acrolein by using molecular oxygen in a fixed-bed reactor configured to have a packed layer containing a packing material and a catalyst layer formed with a catalyst containing at least molybdenum and vanadium. The packed layer contains a packing material that has been used at least once for above gas-phase catalytic oxidation reactions, and the catalyst is present in the packed layer at 0.001˜0.15 mass % of the total amount of the packing material.

Abstract: The present invention comprises: a display unit having a plurality of display elements arranged in a matrix; a drive voltage generating circuit for generating a drive voltage for driving the plurality of display elements; a dataline drive circuit for generating a signal voltage according to display data, the signal voltage being for controlling the amount of current in a supply line of the drive voltage; a scanline drive circuit for selecting one or more of the plurality of display elements which is to be driven; and a pixel light emission control circuit for controlling a light emission time period of each display element according to a distance measured along a current path from the drive voltage generating circuit to the display element.

Abstract: A display device includes a display panel for displaying a white image; an electrochromic layer stacked on the display panel; a voltage application unit for applying a driving voltage to the electrochromic layer; and a display unit for displaying the white image on the display panel. The electrochromic layer allows a spectrum of light to be transmitted therethrough to be controlled in accordance with the driving voltage applied thereto; and the voltage application unit controls the driving voltage to be applied to the electrochromic layer in synchronization with display of the image on the display panel by the display unit, thus to control the spectrum of the light to be transmitted through the electrochromic layer.

Abstract: A display device includes a circuit substrate that is formed of a plurality of layers including a light control element; a counter substrate that faces a surface of the circuit substrate on which the light control element is disposed, with a gap therebetween; a seal that is disposed between the circuit substrate and the counter substrate to surround the light control element; and a filler with which a sealed space surrounded by at least the circuit substrate, the counter substrate, and a sealing surface of the seal is filled. The sealing surface includes internal angle corner surfaces formed by an inner surface of the seal, and a convex surface formed adjacent to the corner surfaces from at least one of the circuit substrate, the counter substrate, and the seal.

Abstract: The present invention comprises: a display unit having a plurality of pixels arranged therein, each pixel including an organic EL element 24, a switching TFT, and a drive TFT; a data signal drive circuit for receiving image data for each frame period and outputting an image signal based on the image data; a scanning signal drive circuit for outputting a scanning signal for controlling a timing at which the switching element of each of the plurality of pixels receives the image signal; and a current source (a light emission power supply unit and a cathode potential control circuit together) for outputting a current supplied to the light emitting unit of each of the plurality of pixels through its drive element; wherein the current source modulates the value of the output current within each frame period.

Abstract: A display apparatus comprises a self-luminous device display having a plurality of light emitting elements arranged in a matrix, a drive voltage generation circuit to generate a drive voltage signal for driving light emitting elements, a blanking period control-included data line drive circuit which controls the drive voltage either according to or irrelevantly to the display data, a scan line drive circuit to determine which light emitting elements to drive, and a pixel control circuit to control voltage written to pixels.

Abstract: A self-emission type display device is disclosed. A current comparator circuit (47) in a data line drive circuit having a current compensating function (2) detects only the result of size comparison between the current amount due to the degeneration of a self-emission element and a reference value. The reduction of the current amount below the reference value is stored by being added to the least significant bits of a display data storage circuit (30). In accordance with the display data read from the storage circuit (30), a D/A conversion circuit (41) generates a write signal voltage.

Abstract: A display control circuit and a display unit are provided. The display control circuit generates a sweep signal that is at a fixed voltage level for an arbitrary period. The display unit compares the magnitude of a signal voltage that is written by a data line drive circuit in accordance with display data and the magnitude of the sweep signal generated by the display control circuit, and exercises illumination/nonillumination control in accordance with the comparison result.

Abstract: In an image display device according to the present invention, means for selecting a pixel to which a display signal current is to be passed has a function of selecting a plurality of pixels simultaneously. Thus, high-precision display can be realized with a number of pixels.

Abstract: A self-emission type display device is disclosed. A current comparator circuit (47) in a data line drive circuit having a current compensating function (2) detects only the result of size comparison between the current amount due to the degeneration of a self-emission element and a reference value. The reduction of the current amount below the reference value is stored by being added to the least significant bits of a display data storage circuit (30). In accordance with the display data read from the storage circuit (30), a D/A conversion circuit (41) generates a write signal voltage.

Abstract: The present invention comprises: a display unit having a plurality of display elements arranged in a matrix; a drive voltage generating circuit for generating a drive voltage for driving the plurality of display elements; a dataline drive circuit for generating a signal voltage according to display data, the signal voltage being for controlling the amount of current in a supply line of the drive voltage; a scanline drive circuit for selecting one or more of the plurality of display elements which is to be driven; and a pixel light emission control circuit for controlling a light emission time period of each display element according to a distance measured along a current path from the drive voltage generating circuit to the display element.

Abstract: An image display apparatus includes a plurality of scanning wires in an image display region for transmitting a scanning signal, a plurality of signal wires intersecting the plurality of scanning wires in the image display region for transmitting a signal voltage, a plurality of current driven electroooptical display elements each arranged in a pixel region surrounded by the wires connected to a common power supply, a plurality of driving elements in the pixel region connected with the electro-optical display elements and a plurality of memory control circuits for holding the signal voltage in response to the scanning signal to control driving of the driving elements based on the held signal voltage. The memory control circuit samples and holds the signal voltage while blocking a bias voltage from being applied to the driving elements, and subsequently applies the driving elements with the held signal voltage as the bias voltage.

Abstract: The present invention comprises: a display unit having a plurality of display elements arranged in a matrix; a drive voltage generating circuit for generating a drive voltage for driving the plurality of display elements; a dataline drive circuit for generating a signal voltage according to display data, the signal voltage being for controlling the amount of current in a supply line of the drive voltage; a scanline drive circuit for selecting one or more of the plurality of display elements which is to be driven; and a pixel light emission control circuit for controlling a light emission time period of each display element according to a distance measured along a current path from the drive voltage generating circuit to the display element.

Abstract: A display device with a pulse width modulation system in the invention includes a current measuring circuit for measuring a peak current value of a pixel, a reference current value calculating circuit for calculating a reference current value according to at least one of cumulative use time of the pixel and a degraded condition of the pixel, and an anode power supply circuit for controlling the peak current value of the pixel, aiming for the reference current value as a target.

Abstract: A display control circuit and a display unit are provided. The display control circuit generates a sweep signal that is at a fixed voltage level for an arbitrary period. The display unit compares the magnitude of a signal voltage that is written by a data line drive circuit in accordance with display data and the magnitude of the sweep signal generated by the display control circuit, and exercises illumination/nonillumination control in accordance with the comparison result.

Abstract: An image display apparatus includes a display having data holding function, a vertical drive circuit sequentially and selectively scanning matrix form display elements, and a horizontal drive circuit writing a voltage among binary voltage preliminarily assigned depending upon the digital data of the image signal. The horizontal drive circuit and the vertical drive circuit are operated for performing selective scan of respective display element for at least m times in one frame period. The vertical drive circuit is constituted of n number of sequence circuits and logic operation circuits for outputs of the sequence circuits, where n is smaller than m, a period from inputting to the sequence circuit to outputting from the final stage being less than or equal to half of one frame period, and at least one of the sequence circuits being used with selectively inputting a plurality of inputs.

Abstract: The present invention comprises: a display unit having a plurality of pixels arranged therein, each pixel including an organic EL element 24, a switching TFT, and a drive TFT; a data signal drive circuit for receiving image data for each frame period and outputting an image signal based on the image data; a scanning signal drive circuit for outputting a scanning signal for controlling a timing at which the switching element of each of the plurality of pixels receives the image signal; and a current source (a light emission power supply unit and a cathode potential control circuit together) for outputting a current supplied to the light emitting unit of each of the plurality of pixels through its drive element; wherein the current source modulates the value of the output current within each frame period.

Abstract: The present invention comprises: a display unit having a plurality of display elements arranged in a matrix; a drive voltage generating circuit for generating a drive voltage for driving the plurality of display elements; a dataline drive circuit for generating a signal voltage according to display data, the signal voltage being for controlling the amount of current in a supply line of the drive voltage; a scanline drive circuit for selecting one or more of the plurality of display elements which is to be driven; and a pixel light emission control circuit for controlling a light emission time period of each display element according to a distance measured along a current path from the drive voltage generating circuit to the display element.