Abstract: A driving method includes steps of: providing a source operational amplifier (SOP) to drive a display element; operating the SOP at a first bias current value when the display element is refreshed with a first refresh rate; and operating the SOP at a second bias current value different from the first bias current value when the display element is refreshed with a second refresh rate different from the first refresh rate.

Abstract: A multi-channel circuit is provided. The multi-channel circuit includes a plurality of channel circuits and an overcurrent protection circuit. The channel circuits are configured to output sensing signals associated with channel output signals. Each channel circuit includes a channel output circuit for outputting a channel output signal and one of the sensing signals is associated with the channel output signal of the channel output circuit. The overcurrent protection circuit includes a selection circuit, a current sensing circuit and a comparator. The selection circuit is configured to receive sensing signals associated with channel output signals and select a target sensing signal from the sensing signals. The current sensing circuit is configured into convert the target sensing signal into a target sensing voltage. The comparator is configured to compare the target sensing voltage with a reference voltage to generate a comparison result indicating an overcurrent situation of the channel circuits.

Abstract: A clock and data recovery circuit includes a phase detector and a data sorter. The phase detector includes N samplers and N comparators. The N samplers are used to sample a data signal using N clocks to generate N sampled values. N is an integer greater than 1. A comparator of the N comparators compares a phase of the data signal and a phase of a selected clock of the N clocks. The data sorter is coupled to the phase detector to determine a data order of the N sampled values and disable a subset of the N comparators according to the data order and a promised transition edge.

Abstract: A gain amplifier includes a gain stage, a transimpedance amplifier stage and a feedback stage. The gain stage includes two resistors, two PMOS transistors and two NMOS transistors. A first terminal of the first PMOS transistor and a first terminal of the second PMOS transistor are connected to the first resistor. A first terminal of the first NMOS transistor and a first terminal of the second NMOS transistor are connected to the second resistor. A second terminal of the first PMOS transistor is connected to a second terminal of the first NMOS transistor. A gate terminal of the first PMOS transistor is connected to a gate terminal of the first NMOS transistor. A second terminal of the second PMOS transistor is connected to a second terminal of the second NMOS transistor. A gate terminal of the second PMOS transistor is connected to a gate terminal of the second NMOS transistor.

Abstract: A transmitter includes first and second transistors, a capacitor, a resistor, first and second load resistors, and a current source. The first transistor has a gate terminal to receive a first input signal and a first terminal to output a second output signal. The second transistor has a gate terminal to receive a second input signal and a first terminal to output a first output signal. The capacitor and the resistor are coupled between a second terminal of the first transistor and a second terminal of the second transistor. The first load resistor is coupled between the first terminal of the first transistor and a first node. The second load resistor is coupled between the first terminal of the second transistor and the first node. The current source is coupled to the first terminal of the first transistor, the first terminal of the second transistor, and/or the first node.

Abstract: Disclosed are a display apparatus and its display driving chip and method. A display area of the display panel includes a high refresh rate display area and a low refresh rate display area that are adjacent to each other. In a full refresh frame period, both the high refresh rate display area and the low refresh rate display area are refreshed with data. In a partial refresh frame period, data is refreshed in the high refresh rate display area and data is not refreshed in the low refresh rate display area. The controller controls the gate driver such that a boundary between the high refresh rate display area and the low refresh rate display area in a first partial refresh frame period is different from a boundary between the high refresh rate display area and the low refresh rate display area in a second partial refresh frame period.

Abstract: A backlight data mapping circuit is provided. The backlight data mapping circuit includes a memory control circuit, a mapping control circuit and an arrangement circuit. The memory control circuit is configured to sequentially write original duty cycle information corresponding to a plurality of backlight zones of a backlight panel into a first memory unit. The mapping control circuit is configured to convert the original duty cycle information into mapped duty cycle information according to a remapping table and store the mapped duty cycle information into a second memory unit. The remapping table comprises a plurality of location index numbers that indicate respective locations of the first memory unit or the second memory unit. The arrangement circuit is configured to convert the mapped duty cycle information into rearranged duty cycle information matching a backlight driver output format according to backlight-zone-to-driver-output mapping information that defines a plurality of status values.

Abstract: A comparator includes an input stage, a gain stage, an output stage and a clamp circuit. The input stage receives an input signal and a ramp signal and generates a first output signal. The gain stage, coupled to the input stage, receives the first output signal and generates a second output signal. The output stage, coupled to the gain stage, receives the second output signal and generates a third output signal. The clamp circuit, coupled to the gain stage and the output stage.

Abstract: A method for driving a display panel is provided. The method includes: receiving a first display data having a first data sequence; rearranging the first display data to generate a second display data according to at least one setting signal; and outputting the second display data to drive the display panel. The second display data has a second data sequence different from the first data sequence.

Abstract: A display control circuit for controlling a display panel includes a timing generation circuit and a timing control circuit. The display panel is operating with a timing having a plurality of frame times, each of which having an active period and a blanking period. The timing generation circuit is configured to generate a reset control signal. The timing control circuit is configured to set a plurality of reset pulses having a reset cycle on the reset control signal in each of the frame times. The reset control signal is used for generating a plurality of reset signals to be output to the display panel. A total length of at least one of the plurality of frame times divided by the reset cycle is substantially equal to a first positive integer, and a length of the active period divided by the reset cycle is substantially equal to a second positive integer.

Abstract: An electronic device including a touch panel and a touch sensing circuit is provided. The touch panel includes a plurality of first signal lines and a plurality of second signal lines. The touch panel is configured to perform a touch sensing operation in a touch sensing phase. The touch sensing phase includes a first sensing period and a second sensing period. The touch sensing circuit is configured to drive the touch panel to perform the touch sensing operation in the touch sensing phase. The touch sensing circuit receives a first touch sensing data from the touch panel in the first sensing period and a second touch sensing data from the touch panel in the second sensing period. The touch sensing circuit determines a position of a touch event on the touch panel according to a comparison result of the first touch sensing data and the second touch sensing data.

Abstract: Provided are a display system, a control circuit, and a backlight control method. The control circuit includes a dimming control circuit. The dimming control circuit generates backlight control data to control a brightness level of a backlight unit of a backlight panel of the display system. The brightness level of the backlight unit is increased or is made to blink based on the backlight control data in response to a touch position of a touch event occurring on a touch display panel of the display system being in a range of the backlight unit or in a range of a backlight group which the backlight unit belongs to.

Abstract: An operational amplifier includes an input stage, a first switch, a second switch and a third switch. The input stage includes a current source and a first differential input pair. The first differential input pair includes a first input transistor and a second input transistor. The first input transistor has a gate terminal. The second input transistor has a gate terminal coupled to an output terminal of the operational amplifier. The first switch is coupled between an input terminal of the operational amplifier and the gate terminal of the first input transistor. The second switch is coupled between the gate terminal of the first input transistor and the gate terminal of the second input transistor. The third switch is coupled to the current source and deployed on a current path of the first differential input pair.

Abstract: A display control circuit and a display control method are provided. The display control circuit includes a storage unit, a control register, a local dimming control register, and a microcontroller unit. The storage unit is configured to store a plurality of predefined LDC setting data. The control register is configured to store a first mode setting value. The local dimming control register is configured to store a LDC setting data that is to be applied in synchronization with a frame synchronization signal. The microcontroller unit is coupled to the control register and the local dimming control register. The microcontroller unit is configured to read a first predefined LDC setting data of the plurality of predefined LDC setting data stored in the storage unit according to the first mode setting value and write the first predefined LDC setting data into the local dimming control register.

Abstract: A regulating rectifier and an operation method thereof are provided. A regulating rectifier includes an output switch circuit, an energy storage switch circuit, an energy storage capacitor, and a crossbar switch circuit. In a charging mode, the output switch circuit and the crossbar switch circuit form a rectifier circuit together to convert wireless power received by a wireless charging induction coil into output power. In a current boosting mode, the output switch circuit, the energy storage switch circuit, and the crossbar switch circuit perform an iterative operation (including a direct current-direct current (DC-DC) conversion and an alternating current-direct current (AC-DC) conversion) together. The DC-DC conversion uses energy of the energy storage capacitor to perform current boosting on the wireless charging induction coil. The AC-DC conversion converts the wireless power of the wireless charging induction coil into the output power.

Abstract: A method for generating overdriving voltage based on temperature of panel is disclosed. The method includes the following steps. A built-in temperature detector of a controller senses temperature of the panel to generate a sensing temperature value. Alternatively, the controller calculates a sensing temperature value, according to lookup information and raw data. The raw data is obtained according to touch sensing signals output from multiple touch sensors. Then, the controller generates an overdriving voltage, according to the sensing temperature value and another lookup information. The controller outputs the overdriving voltage to the pixel circuit.

Abstract: A method of controlling a display panel comprising a plurality of pixels includes a step of outputting a scan control signal to the display panel in a plurality of frame periods. The scan control signal has a first timing setting in a first frame period among the plurality of frame periods, and has a second timing setting in a second frame period among the plurality of frame periods, wherein the second timing setting is different from the first timing setting. A plurality of scan signals generated from the scan control signal are output to the plurality of pixels respectively and sequentially.

Abstract: The invention provides a display device and a display panel. The display device includes the display panel and a reading circuit. The display panel includes an upper substrate, a lower substrate, a thin-film transistor (TFT) layer, and a photosensitive circuit. The TFT layer is disposed between the upper substrate and the lower substrate. A plurality of TFTs of a pixel array of the display panel are disposed in the TFT layer. The photosensitive circuit is disposed in the TFT layer to sense an ambient light. The reading circuit is coupled to the photosensitive circuit to read a sensing result.

Abstract: Provided are a driver circuit, a display device and a driving method of a display panel thereof. The display device includes a source driver, a display panel, and a multiplexer. A common terminal of the multiplexer is coupled to an output terminal of a source driver channel of the source driver. The multiplexer includes a plurality of selection terminals, each coupled to a corresponding one of a plurality of data lines of the display panel. Each of the data lines has a corresponding color attribute. The color attributes of at least two of the data lines coupled to the multiplexer are a first color. The multiplexer selects each of the selection terminals once in a unit period. The multiplexer continuously selects the data lines with the same color attribute as the first color in the unit period.

Abstract: A control method includes following operations: outputting a first control signal to a first switch coupled to a first sub-pixel of a display panel; outputting a second control signal to a second switch coupled to a second sub-pixel of the display panel; and outputting a driving voltage of display data according to a data output enable signal. The data output enable signal has a plurality of pulses, and a first time interval between a first pulse of the plurality of pulses and a second pulse of the plurality of pulses is shorter than a second time interval between the second pulse of the plurality of pulses and a third pulse of the plurality of pulses.