Abstract: A source driver and an operating method thereof are provided. The source driver includes a high voltage circuit, a low voltage circuit and a sensing circuit. The low voltage circuit is coupled to the high voltage circuit. The high voltage circuit and low voltage circuit drive a display panel. The sensing circuit is coupled to the low voltage circuit. The sensing circuit senses the display panel during an analog-to-digital operating period. At least one of the high voltage circuit and the low voltage circuit is disabled during at least part of the analog-to-digital operating period.

Abstract: An operational amplifier includes an output node; an output stage, comprising a plurality of output current paths and a plurality of control nodes, wherein the plurality of control nodes are respectively coupled to the plurality of output current paths, and the plurality of output current paths are coupled to the output node and respectively coupled to a plurality of power supply sources providing different voltages; and a selecting unit, configured to couple an internal output node of the operational amplifier to one of the plurality of control nodes of the output stage.

Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.

Abstract: A sensing circuit for an organic light-emitting diode (OLED) driver includes a sample and hold circuit and a clamping circuit. The sample and hold circuit includes a capacitor. The clamping circuit, coupled to the sample and hold circuit, is configured to clamp a sensing voltage received by the sample and hold circuit to conform to a withstand voltage of the capacitor.

Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals, the sensing channels are coupled to the sensing lines in an arrangement selected from one of a random arrangement and a normal arrangement. The driver further includes a signal convertor coupled to the sensing channels and configured to receive the sensing signals from the sensing channels in a sequence selected from one of a random sequence and a normal sequence.

Abstract: An output circuit with electrostatic discharge (ESD) protection in a semiconductor chip includes a first metal oxide semiconductor (MOS) transistor and a first resistor. The first MOS transistor includes a first terminal coupled to an output pad of the semiconductor chip, a bulk terminal and a gate terminal. The first resistor is coupled between the bulk terminal of the first MOS transistor and a first power supply terminal.

Abstract: An electronic device for driving a display panel and an operation method thereof are provided. The electronic device includes a sensing circuit, a dummy sensing circuit, a multiplexer circuit and a processing circuit. The sensing circuit senses a sensing line of the display panel to output a sensing result. The dummy sensing circuit senses a dummy signal to output a dummy sensing result, wherein the dummy signal is related to a part of or all of signals of the sensing line. The multiplexer circuit time-divisionally outputs the dummy sensing result and the sensing result. The processing circuit is coupled to an output terminal of the multiplexer circuit to time-divisionally receive the dummy sensing result and the sensing result.

Abstract: A video transmission system is disclosed. The video transmission system comprises a multi-drop bus, a first source driving chip, a second source driving chip and a timing controller. The first source driving chip comprises a first source driving circuit and a first terminal circuit. The first terminal circuit is coupled to the multi-drop bus and the first source driving circuit for providing a first terminal resistor. The second source driving chip comprises a second source driving circuit and a second terminal circuit. The second terminal circuit is coupled to the multi-drop bus and the second source driving circuit for providing a second terminal resistor. The timing controller is coupled to the first source driving chip and the second source driving chip via the multi-drop bus.

Abstract: A source driver is configured to drive an organic light-emitting diode (OLED) display panel. The source driver includes a sensing circuit and an operational amplifier. The sensing circuit is configured to sense pixel information of an OLED pixel circuit through a sensing line of the OLED display panel. The operational amplifier includes an amplifier circuit and at least one switch circuit. The amplifier circuit includes at least one gain circuit. An input terminal of the amplifier circuit is coupled to an output terminal of the sensing circuit. Each of the at least one switch circuit is coupled between a pair of output terminals of a corresponding one of the at least one gain circuit.

Abstract: A source driver including a sensing circuit and an operational amplifier is provided. The sensing circuit senses pixel information of an organic light-emitting diode (OLED) pixel circuit. The operational amplifier includes an amplifier circuit and an offset voltage storing and reducing circuit. An input terminal of the amplifier circuit is coupled to the sensing circuit. The amplifier circuit includes a first gain circuit and a second gain circuit. An output terminal of the offset voltage storing and reducing circuit is coupled to a coupling terminal of the first gain circuit. An input terminal of the offset voltage storing and reducing circuit is coupled to an output terminal of the second gain circuit. The offset voltage storing and reducing circuit stores and reduces an offset voltage of the first gain circuit.

Abstract: The differential difference amplifier circuit includes a differential input stage circuit, a loading stage circuit coupled to the differential input stage circuit, and an output stage circuit coupled to the loading stage circuit. The output stage circuit is configured to generate an output signal. The differential input stage circuit includes a first differential pair having a first transconductance and a second differential pair having a second transconductance. The first differential pair is biased by a first current source and receives a first input signal and the output signal. The second differential pair is biased by a second current source and receives a second input signal and the output signal. At least one of the first transconductance and the second transconductance is adjusted according to the image data.

Abstract: A driver of a display panel comprises an operational amplifier and a bias control circuit. The operational amplifier outputs an output signal to drive the display panel according to a bias voltage. The bias control circuit is coupled to the operational amplifier and is configured to output the bias voltage to the operational amplifier, wherein the bias control circuit generates the bias voltage according to a random bit stream. The bias voltage is changed according to signal levels of the random bit stream, and a systematic voltage offset of the operational amplifier is adjusted according to the bias voltage. A method adapted to a driver of a display panel, and a display system are also introduced.

Abstract: An operational amplifier with a constant transconductance bias circuit and a method thereof are introduced. The operational amplifier includes a differential difference amplifier and the constant transconductance bias circuit. The differential difference amplifier has at least one first differential transistor pair and at least one second differential transistor pair. The constant transconductance bias circuit is electrically connected to the differential difference amplifier, and configured to output a first bias voltage to bias the at least one first differential transistor pair and output a second bias voltage to bias the at least one second differential transistor pair. The first bias voltage and the second bias voltage are configured to maintain constant transconductance of the differential difference amplifier.

Abstract: A gamma correction digital-to-analog converter (DAC) includes a first DAC circuit, a second DAC circuit and a voltage generator. The first DAC circuit includes a plurality of first transistors and is configured to receive a plurality of first reference gamma voltages and 1 upper bits of k-bit digital data and generate a first gamma voltage based on the 1 upper bits of the k-bit digital data and the first reference gamma voltages. The second DAC circuit includes a plurality of second transistors and is configured to receive a plurality of second reference gamma voltages and m lower bits of the k-bit digital data and generate a second gamma voltage based on the m lower bits of the k-bit digital data and the second reference gamma voltages.

Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.

Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.

Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels and a signal convertor. The plurality of sensing channels are configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals. The signal convertor are coupled to the sensing channels and configured to receive the sensing signals from the sensing channels. The signal convertor receives the sensing signals from the sensing channels in different sequences during different sensing periods.

Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals, the sensing channels are coupled to the sensing lines in an arrangement selected from one of a random arrangement and a normal arrangement. The driver further includes a signal convertor coupled to the sensing channels and configured to receive the sensing signals from the sensing channels in a sequence selected from one of a random sequence and a normal sequence.

Abstract: A display panel including a plurality of pixel units, a plurality of source lines, a plurality of gate lines and a plurality of common electrode lines is provided. The pixels units are arranged in array. The array includes a plurality of columns and a plurality of rows. The source lines are respectively coupled with the pixel units disposed in a same column of the columns. The gate lines are respectively coupled with the pixel units disposed in a same row of the rows. The common electrode lines and gate lines extend parallelly with each other. At least one of the source date lines, the gate lines and the common electrode lines has the line widths varied along the extension direction thereof.

Abstract: An electronic device for driving a display panel and an operation method thereof are provided. The electronic device includes a sensing circuit, a dummy sensing circuit, a multiplexer circuit and a processing circuit. The sensing circuit senses a sensing line of the display panel to output a sensing result. The dummy sensing circuit senses a dummy signal to output a dummy sensing result, wherein the dummy signal is related to a part of or all of signals of the sensing line. The multiplexer circuit time-divisionally outputs the dummy sensing result and the sensing result. The processing circuit is coupled to an output terminal of the multiplexer circuit to time-divisionally receive the dummy sensing result and the sensing result.