Abstract: A data driving circuit may include a shift register unit which may further include a plurality of first stages connected in series that may receive data signals and may output the data signals, in which each first stage may receive the data signals output from a preceding first stage, a latch unit including a plurality of second stages, in which each second stage may be connected to a different predetermined first stage, in which each second stage receives the data signals output from the predetermined first stage, in which the number of second stages may be substantially half the number of the first stages, and a D/A converter connected to the latch unit which may receive digital data signals and output analog data signals.

Abstract: The present invention provides a data latch circuit which can operate stably with a low-amplitude signal, which consumes less electric power, and which is resistant against the variation in TFTs. When an analog switch is turned on, a data signal is inputted to a gate electrode of an n-channel TFT and, at this time, VDD is supplied to an input terminal of an inverter. When the analog switch in turned off, the n-channel TFT is turned on or off depending on a level of the data signal. When the data signal is at an H level, the n-channel TFT is turned on and VSS is supplied to the input terminal of the inverter. When the data signal is at an L level, VDD is supplied to an input terminal of the inverter. Therefore, only VDD and VSS levels are applied to the input terminal of the inverter.

Abstract: A display device including a display unit including a plurality of data lines for transmitting data currents, a plurality of scan lines for transmitting scan signals, and a plurality of pixel areas defined by the data lines and the scan lines; a data driver for converting a plurality of grayscale data that include first data and second data into at least one of the data currents, and applying the at least one of the data currents to at least one of the data lines; and a scan driver for sequentially applying the scan signals to the plurality of scan lines, and wherein the data driver divides the plurality of grayscale data into at least two grayscale ranges including a first grayscale range, outputs a first current of the first grayscale range including at least one of the plurality of grayscale data by using the first data, and outputs a second current that corresponds to the second data in the first grayscale range.

Abstract: A voltage-current converting converts a voltage signal into a current signal. In an example operation, a source of a transistor is connected to a first power source, the source is connected to an input terminal via a coupling capacitor, and a gate and a drain of the transistor are connected to a second power source so that current flows between the source and the drain while a constant voltage is applied to the input terminal. To output the current signal, the drain is disconnected from the second power source, the voltage signal is supplied from the input terminal to the holding capacitor via the coupling capacitor, the coupling capacitor is disconnected from the input terminal, the gate is disconnected from the second power source, the drain is connected to the second power source, and the source is connected to an output terminal.

Abstract: A method of economically manufacturing display devices having a matrix of drivable pixels arranged in rows and columns arranged to be driven by IC drivers, including the steps of including a plurality of sensor signal lines in the display device that are selectively connectable to certain of the pixel rows, a plurality of sensor signal lines selectively connectable to certain of the pixel columns, transmitting test signals to test predetermined ones of the rows and columns of pixels, and connecting pixel driving circuits to those display devices exhibiting uniform pixel brightness in response to the test signals.

Abstract: A unit circuit includes a capacitive element having a first electrode, a second electrode, and a dielectric layer interposed between the first electrode and the second electrode, a transistor having a gate electrode connected to the first electrode, a first terminal supplied with one of a low potential and a high potential, a second terminal connected to a driven element, a first switching element controlling electrical connection between the gate electrode of the transistor and the second terminal, and a second switching element connected to the second electrode. A potential of the first electrode is set to a predetermined potential higher than a first potential, and the potential of the first electrode is set to the first potential in a state that the first electrode is electrically isolated from the predetermined potential by turning off the first switching element.

Abstract: An OLED (organic light-emitting diode) passive-matrix display includes a display portion and a driver portion. The display portion includes a matrix of OLEDs for displaying information. The driver portion includes a monitor circuit and a voltage adjusting circuit. The voltage adjusting circuit has a power-up portion that generates a supply voltage based on a reference voltage. In response to an indication to switch modes, the voltage adjusting circuit switches to an operational mode wherein the supply voltage is generated based on the maximum voltage drop read across the OLEDs.

Abstract: A display device with a compensation circuit that applies a fixed potential constantly to a gate electrode of a driving transistor for a certain period is provided. Specifically, each difference voltage value between an anode and a cathode of the light emitting element is utilized in the case where the light emitting element emits light and emits no light. In a case where the light emitting element emits light, a potential of the gate electrode of the driving transistor is to be held; and in a case where the light emitting element emits no light, a potential that certainly turns off the gate electrode of the driving transistor is kept on applying to the gate electrode of the driving transistor.