Abstract: A display panel includes a transistor array substrate which has a plurality of pixels and is formed by providing a plurality of transistors for each pixel, each of the transistor having a gate, a gate insulating film, a source, and a drain. A plurality of interconnections are formed to project to a surface of the transistor array substrate and arrayed in parallel to each other. A plurality of pixel electrodes are provided for each pixel and arrayed between the interconnections on the surface of the transistor array substrate along the interconnections. Each of a plurality of light-emitting layers is formed on each pixel electrode. A counter electrode is stacked on the light-emitting layer.

Abstract: An emission apparatus includes an emission element, a pixel drive circuit connected to the emission element, a data line connected to the pixel drive circuit, and an emission drive apparatus that, in a selection period, lets a reference current with a predetermined current value flow to the pixel drive circuit via the data line, derives a compensation voltage which is a difference between a potential which varies according to a unique characteristic of the pixel drive circuit and a predetermined reference potential, and generates a correction gradation voltage to be applied to the pixel drive circuit based on the compensation voltage for causing the emission element to emit light at an appropriate luminance gradation.

Abstract: A display drive apparatus includes a detection voltage applying circuit that applies a predetermined detection voltage to the drive element of the pixel drive circuit, a voltage detecting circuit that detects a voltage value corresponding to a device characteristic unique to the drive element after a predetermined time elapses after the application of the detection voltage to the drive element by the pixel drive circuit, and a gradation designating signal generating circuit that generates a gradation designating signal based on an absolute value of a voltage component according to a gradation value of display data and a value, acquired by multiplying an absolute value of the voltage value detected by the voltage detecting circuit, by a constant greater than 1, and applies the gradation designating signal to the pixel drive circuit, whereby a change in device characteristic.

Abstract: A display driving device that drives, based on display data and through a data line, each of a plurality of pixels of different colors, disposed along the data line, connected to the data line and put into a selected state sequentially, comprising: a current generating circuit that generates and outputs a data current which has a current value corresponding to a brightness designated by the display data; and a current control unit that receives the data current that is outputted from the current generating circuit; generates a gradation current, based on the received data current and the display characteristics of each display pixel that is put into the selected state; and supplies, to the data line, the generated gradation current, so that the pixel emits light at the designated brightness based on the display characteristics thereof.

Abstract: A predetermined voltage is supplied to a voltage supply line connected in common to respective current paths of driving elements of each of a plurality of display pixels. Adjustment voltages based on a predetermined unit voltage are sequentially applied to a plurality of data lines connected to the display pixels. Specific values corresponding to element characteristics of the respective driving elements of the display pixels are sequentially detected based on a value of a detection value that is a potential difference between a data line and the voltage supply line or a value of a current flowing into the voltage supply line. Correction gradation voltages are generated for each pixel by correcting a gradation voltage having a voltage value corresponding to display data for the pixel based on the specific value for the pixel, so as to compensate for characteristic fluctuation of the driving element of the pixel.

Abstract: A light-emitting element capable of emitting light having a preferred gradation level depending on display data. During a precharge period, a data driver applies a precharge voltage to a capacitor via a data line. After the application of the precharge voltage, a voltage converter reads a first reference voltage Vref(t1) and a second reference voltage Vref(t2) to generate a compensation voltage based on a difference between the respective reference voltages. Based on the compensation voltage, a voltage calculator compensates an original gradation level voltage Vorg having a value in accordance with display data generated by a gradation level voltage generator. The voltage calculator generates a compensated gradation level voltage Vpix corresponding to a variation amount of an element characteristic for a transistor Tr13 for driving light emission to apply the compensated gradation level voltage Vpix to a data line Ld.

Abstract: A light-emitting element (OLED) is caused to emit light with preferred brightness and gradation level depending on display data. During a precharge period, a data driver applies a precharge voltage (Vpre) to a capacitor (Cs) via a data line (Ld). After the application of the precharge voltage, a voltage converter reads, after a transient response period (Ttrs), a reference voltage Vref to generate a compensation voltage (a·Vref). A voltage calculator compensates, based on the compensation voltage (a·Vref), an original gradation level voltage Vorg having a value in accordance with display data generated by a gradation level voltage generator. As a result, the voltage calculator generates a compensated gradation level voltage Vpix corresponding to a variation amount of an element characteristic for a transistor Tr13 for driving light emission to apply the compensated gradation level voltage Vpix to a data line Ld.

Abstract: A display apparatus includes: a light-emitting device; a pixel circuit which is connected to the light-emitting device; a display driver having a voltage adjustment section which adjusts the potential of an adjustment voltage such that the potential thereof is approximated to a potential which is changed in accordance with the change amount of the characteristics inherent to the pixel circuit when a reference current having a predetermined current value is supplied to the pixel circuit; and a data line which connects the display driver and pixel circuit.

Abstract: A display pixel including a light-emitting element and a drive element for supplying current flowing in a current path to the light-emitting element is applied with a detection voltage based on a predetermined unit voltage. Based on a value of current flowing in the current path of the drive element, a specific value corresponding to an element characteristic of the drive element is detected. A gradation voltage corresponding to a luminance gradation of display data is generated. Based on the specific value and the unit voltage, a compensated voltagea is generated. By compensating the gradation voltage based on the compensated voltage, a compensated gradation voltage is generated. And the compensated gradation voltage is supplied to the display pixel.

Abstract: A display apparatus includes a display panel having a plurality of display pixels two-dimensionally arrayed display pixels having pixel drive circuits and light emitting devices near at intersections of a plurality of scan lines and a plurality of data lines laid out in a row direction and in a column direction so as to be orthogonal to each other, a scan driver which applies a scan signal to the scan lines at a predetermined timing, a data driver which supplies a gradation signal corresponding to display data to the display pixels via the data lines, and a pair of power source drivers which apply a supply voltage to both ends of a plurality of power supply lines laid out in the column direction at a predetermined timing.

Abstract: A display device includes a pixel array in which a plurality of display pixels are arranged in a two-dimensional manner which is divided into a plurality of column groups composed of the display pixels of a predetermined number of columns, a signal drive circuit which produces a signal current based on display data, and sequentially outputs, in time series via a common terminals, the signal current that corresponds to the display pixels for one row of the pixel array for each of signal currents that correspond to each of the column groups, and a current latch circuit which sequentially captures and holds the signal currents output from the signal drive circuit for one row of the pixel array, generates gradation currents and simultaneously supplies the gradation currents to the plurality of data lines, wherein the pixel array and the current latch circuit are formed on a display panel substrate.

Abstract: A contact pusher (220a) attached to the front end of a contact arm (210) bringing an IC device (10) into contact with a contact part of a test head and pushing the IC device (10) is provided with a suction pad (240) for picking up and holding an IC device (10), a first press part (250) for pushing against a package (11) of an IC device (10), a second press part (260) for pushing against terminals (12) of the IC device (10), and a base part (230) for conducting heat to the first press part (250), the first press part (250) and the base part (230) contacting each other and the first press part (250) provided to be able to finely move relative to the base part (230).

Abstract: A display panel including a plurality of pixels. Each pixel includes: a light emitting element; a pixel circuit having a driving transistor connected to the light emitting element in series; a data line to which a data current is supplied through the pixel circuit; a scanning line for selecting the pixel circuit; a first insulation film to cover the data line; and a second insulation film made of a material different from the first insulation film, to cover the data line and the first insulation film, wherein the following expression is satisfied.

Abstract: A display apparatus is disclosed. A display panel includes a plurality of display pixels arranged at intersections of a plurality of scanning lines and a plurality of data lines. A scanning drive unit sequentially applies a scanning signal to each of the scanning lines and sets the corresponding display pixels to a selection state. A data drive unit generates a gradation signal corresponding to the display data and supplies the gradation signal to the display pixels. A power source drive unit supplies to the display pixels a drive voltage for controlling a drive state of each of the display pixels. A drive control unit controls the power source drive unit to operate to set the display pixels to a non-display operation state during a non-display period, and controls the scanning drive unit to operate to set the display pixels to the selection state during the non-display period.

Abstract: There is provided a display drive apparatus for operating, in accordance with display data, a current control type optical elements each having a display pixel provided with the optical element and a drive element which supplies a driving current to the optical element. The display drive apparatus includes a gradation signal creating circuit which generates a gradation signal corresponding to a luminance gradation of the display data and supplies the gradation signal to the display pixel, a threshold voltage detection circuit which detects a threshold voltage peculiar to the drive element of the display pixel, and a compensation voltage application circuit which generates a compensation voltage for compensating for the threshold voltage of the drive element on the basis of the threshold voltage and applies the compensation voltage to the drive element.

Abstract: A scanning head includes a surface emitting part array panel which has an array of surface emitting parts to emit light A plurality of light guide parts are respectively opposite to the surface emitting parts. Each of light guide parts has an entrance plane to receive the light from the surface emitting part, a reflection plane to reflect the light from the entrance plane, and an exit plane to emit the light from the reflection plane.

Abstract: A light emission drive circuit includes an electric charge accumulating section for accumulating electric charges on the basis of a gradation sequence signal designating a luminance gradation sequence. A light emission control section flows a light emission drive current having a current value in accordance with an amount of the electric charges accumulated in the electric charge accumulating section. A writing control section controls a supplying state of the electric charges based on the gradation sequence signal to the electric charge accumulating section on the basis of a first control signal. A voltage control section controls a drive voltage for operating the light emission controlling section on the basis of a second control signal.

Abstract: A transistor array substrate includes a plurality of driving transistors which are arrayed in a matrix on a substrate. The driving transistor has a gate, a source, a drain, and a gate insulating film inserted between the gate, and the source and drain. A plurality of signal lines are patterned together with the gates of the driving transistors and arrayed to run in a predetermined direction on the substrate. A plurality of supply lines are patterned together with the sources and drains of the driving transistors and arrayed to cross the signal lines via the gate insulating film. The supply line is electrically connected to one of the source and the drain of the driving transistor. A plurality of feed interconnections are formed on the supply lines along the supply lines, respectively.

Abstract: A display panel includes a plurality of sets of transistors which are formed on an upper side of a substrate. An insulating film is formed to cover upper surfaces of the transistors and has a plurality of trenches formed an upper surface thereof. A plurality of first interconnections are buried in the trenches. An interconnection insulating film covers upper surfaces of the first interconnections. A plurality of second interconnections are provided on an upper side of the interconnection insulating film. Each of a plurality of pixel electrodes is provided between adjacent two of the second interconnections. Each of a plurality of light-emitting layers is provided on the pixel electrode. A counter electrode is provided on the light-emitting layer.

Abstract: A display panel includes a transistor array substrate which has a plurality of transistors including at least a driving transistor, and a plurality of pixel electrodes electrically connected to the driving transistor of the plurality of transistors. A plurality of light-emitting layers are provided on the pixel electrodes. A counter electrode is provided on the light-emitting layers. Each of a plurality of interconnections is arranged between the pixel electrodes adjacent to each other and electrically connected to the counter electrode.