Abstract: For making outputs of a drive circuits accurate, the drive circuit is composed of a plurality of current signal generation circuits for outputting a current signal to each of a plurality of output units, a current signal output line to which outputs of the plurality of current signal generation circuits are commonly connected, a correction value output circuit for outputting a correction value obtained by evaluating the output of one or more specific circuits of the plurality of current signal generation circuits on a basis of current values output through the current signal output line, and a correction circuit for correcting an image signal supplied to the current signal generation circuits by means of the correction value.

Abstract: A circuit device includes a first circuit including a thin-film transistor and a second circuit including another thin-film transistor. The second circuit is controlled by control signals including a first control signal and a second control signal delayed from the first control signal. The second control signal is generated on the basis of the first control signal which has been propagated through the second circuit.

Abstract: A color display apparatus which has a color display unit in which color pixels are arranged in a matrix, a plurality of data lines, and a plurality of column drive circuits which output data signals to a plurality of data lines for every row, has a first dispersion circuit for selecting column drive circuits used as output destinations of analog video signals for every color which are obtained by DA converting digital video signals for every color, a second dispersion circuit for selecting data lines used as output destinations of the data signals from the column drive circuits, and control circuits which control the first and second dispersion circuits so as to sequentially change the drive circuits used as the output destinations of the analog video signals for each color, and the data lines used as the output destinations of the data signals, for every scanning period.

Abstract: A display apparatus of the present invention has EL elements and pixel circuits 2 for supplying currents to the EL elements, which are arranged in a matrix fashion, and column control circuits 1 arranged corresponding to the number of columns of the matrix. The same number of column control circuits 1 and data lines 14 form a group, and the data line 14 which becomes an output of the column control circuit 1 is sequentially changed over in the group. Furthermore, the display apparatus includes means for correcting input signals among different groups. According to the present invention, even if a characteristic of the column control circuit 1 has a variation, no unevenness occurs in a displayed image.

Abstract: In a display apparatus, second organic EL elements are closer to the edge of a display portion than first organic EL elements. The voltage drop in the first organic EL element is larger than that in the second organic EL element. The thickness of the organic compound layer in the first organic EL element is different from the thickness of the organic compound layer in the second organic EL element. The light-extraction efficiency in the first organic EL element is higher than the light-extraction efficiency in the second organic EL element.

Abstract: For making outputs of a drive circuits accurate, the drive circuit is composed of a plurality of current signal generation circuits for outputting a current signal to each of a plurality of output units, a current signal output line to which outputs of the plurality of current signal generation circuits are commonly connected, a correction value output circuit for outputting a correction value obtained by evaluating the output of one or more specific circuits of the plurality of current signal generation circuits on a basis of current values output through the current signal output line, and a correction circuit for correcting an image signal supplied to the current signal generation circuits by means of the correction value.

Abstract: For making outputs of a drive circuits accurate, the drive circuit is composed of a plurality of current signal generation circuits for outputting a current signal to each of a plurality of output units, a current signal output line to which outputs of the plurality of current signal generation circuits are commonly connected, a correction value output circuit for outputting a correction value obtained by evaluating the output of one or more specific circuits of the plurality of current signal generation circuits on a basis of current values output through the current signal output line, and a correction circuit for correcting an image signal supplied to the current signal generation circuits by means of the correction value.

Abstract: A pixel circuit of a display apparatus includes a transistor M5 having a drain connected to a light-emitting element, a switch S1 connected between a power supply and a source of the transistor M5, switches S2 and S3 connected between wiring to which a data current is supplied and the source of the transistor M5, capacities C1 and C2 of which one-side terminals are connected between the switches S2 and S3, and a switch S4 provided between the gate of the transistor M5 and a reference voltage supply.

Abstract: A display device includes a display unit in which display elements provided with pixel circuits are arranged so as to have a sequence of three different colors in a row direction and the colors are shifted in a column direction by 1.5 columns. A scanning line is provided in every row of the display unit, a signal line is provided in every column of the display unit, and a column control circuit outputs a display signal for every column. The positions of the pixel circuits are displaced in the row direction with respect to the arrangement of the display elements, and are thus aligned in the column direction and also connected to the signal line only on one side of the signal line. No inversion of the pixel circuit pattern occurs and variations of the circuit characteristics in every row are suppressed.

Abstract: An organic EL display apparatus has a driving circuit. In the driving circuit, the source and drain of a driving transistor and the anode and cathode of an organic EL device are connected in series between voltage sources. A current passes between the source and drain of the driving transistor and between the anode and cathode of the organic EL device in accordance with a voltage between the gate and source of the driving transistor. Consequently, the organic EL device emits light. In order to store the voltage in the capacitor, a constant voltage source is connected to the gate of the driving transistor and the above-described series connection is disconnected at the source of the driving transistor and connected to a signal source. Then, a current signal output from the signal source passes between the source and drain of the driving transistor, and charges are stored in a capacitor in accordance with the current signal.

Abstract: A display apparatus includes a color display unit including pixels arranged in a matrix. The pixels includes first pixels for blue, second pixels for green, and third pixels for red, data lines connected to corresponding columns in the color display unit, and column-driving circuits connected to the columns in the color display unit and configured to convert input video-signal voltages into color-data-signal currents to be supplied to the color pixels and output the currents to the data lines. Voltage-current conversion gains of the column-driving circuits supplying color-data-signal currents to the first color pixels are set larger than those of the column-driving circuits supplying color-data-signal currents to the second and third color pixels, each of which has a luminance efficiency relative to a current higher than those of the first color pixels.

Abstract: A correction sampling signal generation circuit is disposed subsequent to a plural-stage sampling signal generation circuit of sequentially generating sampling signals in response to an input timing signal, an extended sampling circuit is disposed subsequent to a plural-stage sampling circuit of sampling a video signal at timing of the sampling signal, and a data signal is sampled at timing of the sampling signal generated by the extended sampling circuit. In a timing adjustment period, the data signal for adjustment is generated, the phases of the data signal and the timing signal are relatively shifted, the outputs of the sampling circuits are supplied to a common output line through respective switches, and the phase of the optimum timing signal or the video signal is determined based on the output from the common output line.

Abstract: A display device for displaying images based on video signals includes a timing signal generating circuit for generating a timing signal, a sampling signal generating circuit for generating a sampling signal at the timing corresponding to the timing signal, and a sampling circuit for sampling a target signal during a sampling period set by the sampling signal and outputting the sampled target signal. The sampling circuit is connected to the timing signal generating circuit so that test output obtained by sampling a test target signal during the sampling period set by the sampling signal corresponding to a test timing signal generated by the timing signal generating circuit can be input into the timing signal generating circuit, and the timing signal generating circuit controls the relative output timing between the timing signal and the target signal under the control based on the test output input.

Abstract: A display apparatus includes, on a substrate, an area in which a plurality of constituents each including a light-emitting device and a device control circuit for controlling current passing through the light-emitting device is disposed, a common interconnecting line disposed to surround a periphery of the area, a terminal portion for permitting electrical connection to an external circuit, and a wiring lead-out portion for electrically connecting the common interconnecting line to the terminal portion. The light-emitting device is disposed, on the substrate, between a lower first electrode and an upper second electrode. The first electrode is electrically connected to the device control circuit, and the second electrode is electrically connected to the common interconnecting line through a contact hole.

Abstract: In a display apparatus, second organic EL elements are closer to the edge of a display portion than first organic EL elements. The voltage drop in the first organic EL element is larger than that in the second organic EL element. The thickness of the organic compound layer in the first organic EL element is different from the thickness of the organic compound layer in the second organic EL element. The light-extraction efficiency in the first organic EL element is higher than the light-extraction efficiency in the second organic EL element.

Abstract: A method of driving a display apparatus includes the steps of (a) providing the display apparatus with a plurality of pixel circuits having an electroluminescence element, a driving transistor for providing driving current to drive the electroluminescence element and a capacitor connected to a gate of the driving transistor, and a column control circuit comprising a transistor, a first switch for providing a voltage signal to a gate of the transistor through a capacitor element, a switch circuit for connecting the gate of the transistor to a reference voltage source, and a second switch capable of providing a current signal to the plurality of pixel circuits from the transistor, and (b) inputting a voltage of blanking level to the capacitor element through the first switch while connecting the gate of the transistor to the reference voltage source by the switch circuit.

Abstract: A first current mirror circuit performs its normal operation when a first switch is turned on, and is constructed so that a period during which the first current mirror circuit can output a current is realized when the first switch is turned off. A second current mirror circuit is connected to the first current mirror circuit so that the output current of the first current mirror circuit is decreased by an output current of the second current mirror circuit. A current output of a transistor and a current output of the first current mirror circuit are connected and outputted as an output signal. The first switch and a second switch are controlled by the output signal or a signal formed by the output signal being passed through a buffer circuit.

Abstract: A current signal output circuit includes a first switch, a first capacitor element and a first transistor in which a first terminal of the first switch is connected to a voltage signal line for providing a voltage signal. A second terminal of the first switch is connected to a first terminal of the first capacitor element, a second terminal of the first capacitor element is connected to a gate electrode of the first transistors, and a first main electrode of the first transistor is connected to a first power source.

Abstract: A method of driving a display apparatus includes the steps of (a) providing the display apparatus with a plurality of pixel circuits having an electroluminescence element, a driving transistor for providing driving current to drive the electroluminescence element and a capacitor connected to a gate of the driving transistor, and a column control circuit comprising a transistor, a first switch for providing a voltage signal to a gate of the transistor through a capacitor element, a switch circuit for connecting the gate of the transistor to a reference voltage source, and a second switch capable of providing a current signal to the plurality of pixel circuits from the transistor, and (b) inputting a voltage of blanking level to the capacitor element through the first switch while connecting the gate of the transistor to the reference voltage source by the switch circuit.

Abstract: In an integrated circuit, a time-axis expanding circuit is provided in addition to a driver circuit for outputting a signal outside. The time-axis expanding circuit has an equivalent receiver circuit similar to an ordinary receiver circuit, and a D-type flip-flop circuit connected to the equivalent receiver circuit. Input signals from the pins of the time-axis expanding circuit are inputted to the gates of CMOS transistors of the equivalent receiver circuit, and equivalent differential receiving signals outputted from the drains of the CMOS transistors are inputted to the D input terminal of the D-type flip-flop circuit. A measuring clock signal is inputted to the clock input terminal of the D-type flip-flop circuit, and a time-axis-expanded signal is outputted from the Q output terminal of the D-type flip-flop circuit to an output terminal of the time-axis expanding circuit.