Abstract: An optoelectronic device includes a driving transistor, a correction transistor, and a control circuit. The driving transistor adjusts a first current from a power supply based on a voltage stored in a first capacitor. The driving transistor supplies the adjusted first current to the light-emitting element. The correction transistor is electrically connected on a path of a second current flowing from the power supply to the first capacitor, and adjusts the second current based on a voltage stored in a second capacitor. The control circuit controls the second capacitor to store a gray scale voltage while the first current flows, and controls flow of the second current to update the voltage stored in the first capacitor while the first current is blocked.

Abstract: A display device includes a sensing driver, a memory, a first compensator, and a second compensator. The sensing driver measures a first voltage value applied to a light emitter in a pixels. The memory stores a second voltage value previously measured for the pixel. The first compensator calculates a temperature of the light emitter at a time of measuring the first voltage value, and compensates for the first voltage value based on the temperature. The second compensator compensates for input data for the pixel based on a voltage variation obtained from the temperature-compensated first voltage value and the second voltage value.

Abstract: The pixel circuit includes a light-emitting element, an optical sensor for detecting a luminance of light emitted from the light-emitting element, and a compensation control circuit which controls the amount of the current supplied to the light-emitting element on the basis of a detection result of the optical sensor and a second voltage applied in a second interval different from a first interval with a predetermined length in which the light-emitting element is allowed to constantly emit light with a luminance based on a first voltage, and includes a first control circuit and a second control circuit where the first control circuit controls a first current amount for enabling the light-emitting element to emit light and the second control circuit controls a second current amount supplied to the light-emitting element.

Abstract: A display device includes pixel circuits arranged in a matrix, each of the pixel circuits including: a light-emitting element; an optical sensor to detect luminance of light emitted from the light-emitting element; and a compensation control circuit including a first capacitor and a second capacitor, the first and second capacitors to maintain a second voltage applied to the compensation control circuit. The compensation control circuit controls the light-emitting element to constantly emit light having a luminance based on a first voltage during a first interval of a light emission interval. The compensation control circuit controls the amount of current supplied to the light-emitting element based on a detection result of the optical sensor and the second voltage maintained in the first and second capacitors during a second interval and a third interval of the light emission interval, respectively.

Abstract: A pixel circuit including a light emitting device configured to emit light in accordance with a current flowing thereto, a gradation control unit including a driving transistor configured to control light emission of the light emitting device, and a degradation compensating unit connected between the light emitting device and the gradation control unit and including a light receiving device, wherein a current flowing through the light receiving device varies according to the light emitted from the light emitting device, a compensating transistor configured to compensate for degradation of the light emitting device, wherein a gate electrode of the compensating transistor is connected to the light receiving device, and a compensating circuit configured to compensate for a threshold voltage of the compensating transistor.

Abstract: An electro-optical device includes a driving transistor, a first capacitor, a second capacitor, and a switching circuit. The driving transistor is connected between a power supply and an electrode of a light-emitting element. The first capacitor is connected between a gate and source of the driving transistor. The second capacitor stores a gray scale voltage. The switching circuit selectively connects the first capacitor and the second capacitor to the gate of the driving transistor. A control circuit applies the gray scale voltage to the second capacitor while the first capacitor is connected to the gate of the driving transistor by the switching circuit, and writes a source voltage of the driving transistor at the first capacitor while the second capacitor is connected to the gate of the driving transistor by the switching circuit.

Abstract: A driving method of an electro-optic device is capable of sufficiently providing a threshold voltage compensation time of a driving transistor and a data writing time. A driving method of an electro-optic device including a first power source, a second power source, data lines, scan lines, signal lines, and pixel circuits, includes: a first step in which a light emitting element is in a non-light-emitting state, and a second transistor is turned on by a change of a pulse applied to a signal line; and a second step in which the scan line is sequentially and exclusively selected after the second transistor is turned on, a third transistor including a gate connected to a selected scan line is turned on, and a corresponding data voltage is written to a first node from the data line through the third transistor.

Abstract: A voltage control circuit of a display device includes a first power line, a second power line, a third power line, and a filter circuit. The second power line is connected to the first power line at a central portion of a predetermined area. The third power line is in the predetermined area. The filter circuit is between the second and third power lines, and includes at least one element having a larger resistance value per unit length than a resistance value per unit length of at least one of the second or third power lines.

Abstract: A driving method of an electro-optic device includes initializing a gate voltage of a driving transistor; and performing a data write operation where a threshold voltage of the driving transistor is compensated by turning on a first transistor and a second transistor connected in series between a drain and a gate of the driving transistor and a voltage is provided to a capacity element connected to the gate of the driving transistor to hold a voltage of the compensated data signal as a gate voltage. The first transistor is at a drain side of the driving transistor and the second transistor is between the first transistor and a gate side of the driving transistor. When the data write operation ends, the second transistor is first turned off and, subsequently, the first transistor is turned off. The second transistor is again turned on after the first transistor is turned off.

Abstract: A display apparatus includes a scan line driver and a data line driver. The data line driver supplies data signals to turn on or off pixel circuits connected to selected scan lines. The pixel circuits are turned on or off in sub frames. For each scan line, the sub frames are assigned in the display period based on a reference point. During a preliminary period, the scan line driver selects a scan line and the data line driving circuit supplies a data signal to the pixel circuit based on the reference point. During the display period, the scan line driver selects scan line connected to the pixel circuit in synchronization with an initiation timing of each sub frame of the display period. The data line driver supplies the data signal to the pixel circuit based on the state of the sub frame corresponding to initiation timing.

Abstract: The electro-optic device includes a plurality of data lines, a plurality of scan lines, a plurality of pixel areas arranged at crossings of the data lines and the scan lines, and light emitting elements, wherein first pixel areas are in alternating columns, each first pixel area including only one pixel circuit configured to cause the light emitting elements to emit light, wherein second pixel areas are in alternating columns between the first pixel areas, each second pixel area including two pixel circuits configured to cause the light emitting elements to emit light, and wherein a writing process is performed on the second pixel areas to cause light emitting elements on the pixel circuits on one side to emit light in a period for causing light emitting elements on the pixel circuits on the other side to emit light.

Abstract: A display device includes a sensing driver, a memory, a first compensator, and a second compensator. The sensing driver measures a first voltage value applied to a light emitter in a pixels. The memory stores a second voltage value previously measured for the pixel. The first compensator calculates a temperature of the light emitter at a time of measuring the first voltage value, and compensates for the first voltage value based on the temperature. The second compensator compensates for input data for the pixel based on a voltage variation obtained from the temperature-compensated first voltage value and the second voltage value.

Abstract: A driving method of an electro-optic device includes initializing a gate voltage of a driving transistor; and performing a data write operation where a threshold voltage of the driving transistor is compensated by turning on a first transistor and a second transistor connected in series between a drain and a gate of the driving transistor and a voltage is provided to a capacity element connected to the gate of the driving transistor to hold a voltage of the compensated data signal as a gate voltage. The first transistor is at a drain side of the driving transistor and the second transistor is between the first transistor and a gate side of the driving transistor. When the data write operation ends, the second transistor is first turned off and, subsequently, the first transistor is turned off. The second transistor is again turned on after the first transistor is turned off.

Abstract: A display device includes an acquiring circuit, a calculator, and a delay controller. The acquiring circuit acquires a gray scale voltage of a gray scale value of a pixel. The calculator calculates a first delay correction value based on a voltage currently retained on a data signal line to which the gray scale voltage is output and a gray scale voltage to be subsequently output to the data signal line. The delay controller determines a timing when the gray scale voltage is to be output to the data signal line based on the first delay correction value.

Abstract: An electroluminescence display device includes a controller which generates signals for controlling at least one pixel circuit during a first period and a second period. The controller controls current to a light-emitting element of the at least one pixel circuit based on a data voltage in the first period. The controller controls a supplying period of current to the light-emitting element based on a duty control voltage in the second period. The supplying period when the pixel circuit is driven at a first gray scale value is longer than that when the pixel circuit is driven at a second gray scale. The first gray scale value is greater than the second gray scale value.

Abstract: An optoelectronic device includes a driving transistor, a correction transistor, and a control circuit. The driving transistor adjusts a first current from a power supply based on a voltage stored in a first capacitor. The driving transistor supplies the adjusted first current to the light-emitting element. The correction transistor is electrically connected on a path of a second current flowing from the power supply to the first capacitor, and adjusts the second current based on a voltage stored in a second capacitor. The control circuit controls the second capacitor to store a gray scale voltage while the first current flows, and controls flow of the second current to update the voltage stored in the first capacitor while the first current is blocked.

Abstract: An electro-optical device includes a driving transistor, a first capacitor, a second capacitor, and a switching circuit. The driving transistor is connected between a power supply and an electrode of a light-emitting element. The first capacitor is connected between a gate and source of the driving transistor. The second capacitor stores a gray scale voltage. The switching circuit selectively connects the first capacitor and the second capacitor to the gate of the driving transistor. A control circuit applies the gray scale voltage to the second capacitor while the first capacitor is connected to the gate of the driving transistor by the switching circuit, and writes a source voltage of the driving transistor at the first capacitor while the second capacitor is connected to the gate of the driving transistor by the switching circuit.

Abstract: An optoelectronic device includes a first transistor, a second transistor, and a control circuit. The first transistor is electrically connected between a power supply and a light-emitting element, has a gate to receive a gray scale voltage, and supplies the light-emitting element with a driving current corresponding to the gray scale voltage. The second transistor has a gate electrically connected to an electrode of the light-emitting element and a source or drain electrically connected to a circuit including a voltmeter. The control circuit reads a measurement value of the voltmeter when the gate of the first transistor receives the gray scale voltage, and corrects a next gray scale voltage applied to the gate of the first transistor based on the measurement value.

Abstract: An optoelectronic device includes a first power supply line and a second power supply line extending between two adjacent columns of pixel circuits. A first voltage and a second voltage are alternately applied to each of the first and second power supply lines. The first voltage may be a power voltage, and the second voltage may be an initialization voltage. The first and second power supply lines extend in a direction parallel to data lines and are perpendicular to gate lines connected to the pixel circuits. The first power supply line is connected to even-numbered rows of the pixel circuits, and the second power supply line is connected to odd-numbered rows of the pixel circuits. Each of the pixel circuits includes a capacitive circuit connected between one of the gate lines and a driving transistor. The capacitive circuit stores a voltage to boost a gate voltage of the driving transistor.

Abstract: The present invention relates to the circuit size of a gate selection circuit of an active matrix liquid crystal panel. A plurality of clock signals are generated by a clock generation circuit, a shift register is formed by a plurality of latch circuits, and hold information is shifted in synchronization with enable clock signals. In a switch circuit, a plurality of clock signals are sequentially outputted as gate selection signals according to each output signal of the latch circuits. A driving method and a driving apparatus of the gate selection circuit are also disclosed.