Abstract: A display device is proposed. The display device may include a pixel array including n pixel groups, and a reference current source connected to the pixel array and providing a reference current. The display device may also include n sub-current sources and n pixel circuits included in each of the n pixel groups and connected to the reference current source. Each of the n sub-current sources may provide a first mirrored current that mirrors the reference current. Each of the n pixel circuits may provide a second mirrored current that mirrors the first mirrored current, and wherein n is a natural number.

Abstract: A data signal generator is provided. The data signal generator includes: a grayscale data generator configured to output a first data signal and a second data signal; an input data comparator configured to output a first control signal or a second control signal according to a condition; a first output unit; and a second output unit. The condition is based on a change between a first previous data signal and a second previous data signal in a previous line-time, and a first data signal and a second data signal in a current line-time. The first control signal causes the first output unit and the second output unit to perform a first operation. The second control signal causes the first output unit and the second output unit to perform both the first operation and a second operation. This structure enables signal modification in response to grayscale changes between line-times.

Abstract: A display device is proposed. The device may include a pixel array including n pixel groups, a reference current source including a first reference transistor through which a reference current flows and connected to the pixel array, and n sub-current sources each included in the n pixel groups and each including a first transistor connected to the reference current source, and n pixel circuits connected to the n sub-current sources, respectively. The reference current source may include any one of a second reference transistor and a reference resistor connected to the first reference transistor. Each of the n sub-current sources may provide a first mirroring current, and each of the n pixel circuits may provide a second mirroring current obtained by mirroring the first mirroring current. Each of the n sub-current sources may include any one of an additional transistor and an additional resistor connected to the first transistor.

Abstract: A display driver integrated circuit comprising an operational amplifier configured to amplify an input voltage and generate an output voltage and a slew rate control circuit configured to generate a compensation current based on a difference between the input voltage and the output voltage and provide the generated compensation current to the operational amplifier, wherein the slew rate control circuit comprises a comparison circuit configured to compare the input voltage and the output voltage and generate a difference current corresponding to a difference between the input voltage and the output voltage, a pull-down circuit comprising a pull-down transistor group and configured to generate a pull-down compensation current by current-mirroring the generated difference current, and a pull-up circuit comprising a pull-up transistor group and configured to generate a pull-up compensation current by current-mirroring the generated difference current is provided.

Abstract: Disclosed is an amplifier having a high slew rate without increasing power consumption. The amplifier includes an input unit, a conversion unit, an amplification unit, a frequency compensation circuit, and a slew rate improvement circuit. Alternatively, the amplifier includes an input unit, a conversion unit, an amplification unit, a frequency compensation circuit, a first slew rate improvement circuit, and a second slew rate improvement circuit.

Abstract: According to some aspects of the disclosure, an organic light-emitting display device including a display panel including a driving thin film transistor (TFT), comprises a sensing unit configured to perform a sensing operation for external compensation of the display panel, and an analog-digital converter (ADC) configured to perform a conversion operation of converting an analog value held in the sensing unit into a digital value, wherein the sensing unit comprises a basic sensing unit configured to perform a sensing operation on the driving TFT, and a dummy sensing unit configured to perform a sensing operation on changes in a gain and an offset of the ADC, and the basic sensing unit and the dummy sensing unit are in a cascade connection to each other.