Abstract: A method for use by a touch device to operate a touch panel includes allocating a first area of the touch panel to a touch control circuit, and performing a 2-dimensional scan on the first area. The method further includes allocating a second area of the touch panel to the touch control circuit, and applying a scan method or scan rate to the second area different from the first area.

Abstract: A digital-to-analog converter (DAC) includes at least one multiplexer (MUX), wherein each of the MUX includes a plurality of basic switches and an assistant switch. The plurality of basic switches are coupled between an output terminal of the MUX and a plurality of input terminals of the MUX, and controlled by a plurality of grayscale codes. The assistant switch is coupled to the output terminal of the MUX, and controlled by a control signal different from each of the plurality of grayscale codes.

Abstract: A driving circuit and driving method adapted for driving a data line of a display panel are provided. At least one predetermined table is provided by a controller circuit and applied according to a polarity state of a pixel data in related to a polarity state of its previous pixel data. A first or second mapping table is selected when the two polarity states are identical. A third or fourth mapping table is selected when the two polarity states are different. A corresponding pixel voltage based on the selected mapping table is generated for driving the data line, such that polarity transition between two adjacent sub-pixel units using common data line is considered. In addition, a method of establishing the at least one predetermined table is proposed as well. The invention achieves in providing better visual performances and suppressing conventional visual defects on a liquid crystal display panel.

Abstract: A display driver circuit for controlling a display panel includes a first operational amplifier, a second operational amplifier and a first output switching circuit. The first output switching circuit is coupled to the first operational amplifier and the second operational amplifier. The first output switching circuit couples the first operational amplifier to a first data line of the display panel in a first scan period, to control the first operational amplifier to drive a first subpixel having a first color through the first data line. The first output switching circuit couples the first operational amplifier to a second data line of the display panel in a second scan period, to control the first operational amplifier to drive a second subpixel having the first color through the second data line.

Abstract: A method and a device for image sticking compensation in an organic light-emitting diode (OLED) display are proposed. The method includes to receive a current frame, compute current offset data corresponding to the current frame based on previous cumulative stress data indicating accumulated stress imposed on the OLED display by one or more previous frames preceding the current frame, and apply the current offset data to the current frame to generate a compensated current frame, where the current offset data includes a first current offset value that is positive and a second current offset value that is negative.

Abstract: A first driver circuit is couplable to at least one second driver circuit. Each of the first driver circuit and the at least one second driver circuit has a first terminal and a second terminal. The first terminal of each of the driver circuits is commonly coupled to a first transmission bus, and the second terminal of each of the driver circuits is commonly coupled to a second transmission bus. The first driver circuit receives a notification from each of the at least one second driver circuit, outputs a confirmation signal through the first terminal after receiving the notification from each of the at least one second driver circuit, and starts a preset operation for sensing with a delay of a compensation time for the first driver circuit after outputting the confirmation signal.

Abstract: The present disclosure provides a display driving IC and a display module comprising the display driving IC. The display driving IC includes: a plurality of metal bumps arranged along a first boundary; and a data processing circuit for receiving multiple display data. The data processing circuit divides the plurality of chip signal channels into multiple groups of chip signal channels, employs an opposite connection state to connect to corresponding groups of panel signal channels, and controls the filling sequence of the display data based on the connection state. Through this design, the present disclosure achieves a slim bezel effect while avoiding the metal layer resource consumption problems associated with traditional lower bump schemes, and simplifies part number management through a standardized bump structure and configuration, thereby improving production efficiency.

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: 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.