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: 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: 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: 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: 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: 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.

Abstract: A display apparatus and an image processing method thereof are provided. The display apparatus includes a display panel and an image processing device. The image processing device receives a low-resolution image from a host. The image processing device tracks a user's gaze to define a region of interest (ROI). The image processing device performs a video super-resolution (VSR) reconstruction on an original ROI image corresponding to the ROI in the low-resolution image to generate a high-definition ROI image. The image processing device pastes the high-definition ROI image back to the ROI in the low-resolution image to generate a processed image. The image processing device controls the display panel to display the processed image.

Abstract: A sample and hold (S/H) circuit includes an analog-to-digital converter (ADC), a register and a digital-to-analog converter (DAC). The ADC receives an input signal and converts the input signal into a digital code. The register, coupled to the ADC, stores the digital code. The DAC, coupled to the register, converts the digital code into an output signal.

Abstract: A driver of a light emitting diode (LED) and a light emitting device are provided. The driver includes a first receiver, a second receiver, a data controller, a transmitter, and a check controller. The first receiver receives a parallel data signal. The second receiver receives a serial data signal. The data controller obtains the parallel data signal through the first receiver and transmits the parallel data signal to a serial data output terminal through the transmitter for transmitting the parallel data signal to a next-stage driver. The check controller detects whether the parallel data signal is received through the first receiver and the serial data signal is received through the second receiver and generates a driving signal of the LED according to the received parallel data signal and the received serial data signal to illuminate the LED.

Abstract: A method for controlling a plurality of types of styluses includes steps of: outputting a first uplink signal corresponding to a first type of stylus among the plurality of types of styluses, to detect the first type of stylus; and outputting a second uplink signal corresponding to a second type of stylus among the plurality of types of styluses, to detect the second type of stylus. The second type is different from the first type.

Abstract: A display device includes a display panel and a control circuit. The display panel includes a plurality of pixel driving circuits. Each pixel driving circuit includes a light emitting element and a switching element. The switching element controls a driving current flowing through the light emitting element. The control circuit is coupled to the display panel. The control circuit provides a control signal for controlling the switching element. The control signal includes multiple pulses during each frame period. The control circuit adjusts a width ratio of a first level and a second level of the pulses according to at least one of the refresh rate and the brightness of the display panel.

Abstract: Provided is an image processing method adapted to adjust a contrast and a brightness of an image. The image processing method includes: an image data of the image is extracted; the brightness of the image is adjusted based on the extracted image data; and the contrast of the image is adjusted based on the adjusted brightness of the image.

Abstract: A source driver circuit to drive a panel device includes a driving circuit corresponding to a channel. The driving circuit includes multiple pixel circuits coupled to multiple data lines, an operational amplifier and multiple switches. The operational amplifier outputs multiple data voltages in a data-output period to sequentially charge the data lines. The switches are sequentially closed in the data-output period in response to a multiplexing control signal to electrically connect the operational amplifier and a corresponding pixel circuit. The operational amplifier is controlled to operate in a first power mode in the data-output period and operate in a second power mode in a non-data-output period. A slew rate of the first power mode is higher than a slew rate of the second power mode, and the non-data-output period covers a remaining period of a display period of the channel with the data-output period being excluded.

Abstract: The disclosure provides an artificial intelligence (AI) device, a neural network processing unit (NPU), and an operation method. The AI device includes a host circuit, a memory, and the NPU. The NPU is coupled to the host circuit and the memory. The NPU establishes a transmission connection to the host circuit. A model weight set of an AI model includes a first weight subset and a second weight subset. During an initialization period before the NPU executes the AI model, the host circuit preloads the first weight subset into the memory. During an execution period when the NPU executes the AI model, the NPU receives the first weight subset from the memory and the second weight subset from the host circuit for executing the AI model.

Abstract: A voltage conversion device, a power supply system, and an interference suppression method are provided. The voltage conversion device includes a first input terminal, a feedback controller, a masking circuit, and a driving circuit. The feedback controller provides a switching signal according to a feedback voltage. The feedback voltage is generated based on an output voltage of the voltage conversion device. The masking circuit generates a processed switching signal by masking a part of time period of the switching signal according to one of another switching signal and another switching terminal signal of another voltage conversion device. The driving circuit provides the output voltage according to a first input voltage and the processed switching signal.

Abstract: A touch display integrated circuit (IC) and an operating method thereof, and a touch display device are disclosed. The touch display IC includes a scanning circuit and a processing circuit. The scanning circuit is coupled to multiple touch pads of the touch display panel. The scanning circuit is configured to set an initial area, and to generate multiple scanned touch areas by sequentially shifting the initial area with a pre-setting distance. The scanning circuit is configured to obtain multiple touch sensing signals according to the scanned touch areas to generate touch data. A size of the initial area equals to N of the touch pads. The processing circuit is coupled to the scanning circuit. The processing circuit is configured to calculate touch control information corresponding to each of the scanned touch areas according to the touch data.

Abstract: An embodiment of the invention provides a display apparatus including a light source module and a processing circuit. The light source module includes a plurality of normal light-emitting diode (LED) units and a target LED unit. The processing circuit is coupled to the light source module. The processing circuit is configured to select at least one normal LED unit, and adjust at least one of a duty cycle and a current value of a pulse width modulation signal for driving the at least one normal LED unit to compensate the target LED unit. The at least one normal LED unit is adjacent to the target LED unit.