A sensing circuit includes a first input selecting circuit connected to a first sensing line and a second sensing line, a first path setting circuit that sets a path of a first sensing signal received from the first sensing line or a path of a second sensing signal received from the second sensing line, a second path setting circuit that sets a path of a sensing reference voltage, a first switch matrix connected to the first path setting circuit and the second path setting circuit, a first mode setting circuit connected to a first output terminal of the first switch matrix, a first common sensing amplifier connected to the first mode setting circuit, a second mode setting circuit connected to a second output terminal of the first switch matrix, and a second common sensing amplifier connected to the second mode setting circuit.

A display apparatus includes a display panel, a driving controller, a gate driver and a data driver. The driving controller is configured to insert a compensation image to first image data including a normal image to generate second image data. The gate driver is configured to shift an output time of a gate signal and to output the gate signal having a shifted output time to the display panel. The data driver is configured to generate a data voltage based on the second image data and to output the data voltage to the display panel. A gate shift amount when the compensation image is applied is substantially the same as a gate shift amount immediately before the compensation image is applied.

A shift register unit includes a shift register circuit and a control circuit. The control circuit is electrically coupled to the shift register circuit and at least one control terminal, and is configured, based on at least one control signal respectively from the at least one control terminal, to output a hold signal to a pull-up node in the shift register circuit such that a high voltage maintains at the pull-up node during a specified time period. The shift register includes a plurality of shift register circuits cascadedly connected in stages, includes a first shift register circuit, which is coupled with a control circuit to form a shift register unit described above. The above shift register can be used in an array substrate in a display apparatus with touch control functionality.

A display device includes a display unit including a light emitting device, data and gate driver for respectively applying data and gate voltages to the display unit, and a signal controller for transmitting, to the data driver, image data having a clock embedded therein. The data driver recovers a first internal reference clock during a low period of a first frame control signal, using the image data having the clock embedded therein, compares the frequency of the recovered first internal reference clock with the frequency of a previously stored reference clock, when the frequency of the recovered first internal reference clock is within an error range of the frequency of the previously stored reference clock, outputs the recovered first internal reference clock and receives a second frame control signal, and when the second frame control signal corresponds to a CDR unit operating condition, recovers a second internal reference clock.

A backlight system includes a backlight and a master driving circuit. The backlight includes a plurality of slave driving circuits and a plurality of light sources driven by the plurality of slave driving circuits, wherein the plurality of slave driving circuits are arranged in a matrix of driving rows and driving columns such that first through m-th slave driving circuits, where m is a positive integer greater than one, are arranged in each driving row of the driving rows, and the first through m-th slave driving circuits are connected in a daisy chain structure. The master driving circuit is configured to generate a plurality of input data signals, wherein each input data signal of the plurality of input data signals corresponds to the each driving row, and the each input data signal includes first through m-th packets including luminance data corresponding to the first through m-th slave driving circuits.

An electroluminescent display device includes a display panel including a plurality of pixels connected to a plurality of sensing lines, a plurality of sampling circuits configured to simultaneously sample driving characteristics of the pixels to generate sampling outputs, a plurality of sampling multiplexers configured to divide the sampling outputs into n groups and to alternately select group sampling outputs, a plurality of scalers individually connected to the sampling multiplexers, and a global multiplexer configured to selectively connect outputs of the scalers to an analog-to-digital conversion circuit, wherein the number of scalers is less than the number of sampling circuits.

A gate driving circuit includes multiple stages to provide gate signals to gate lines of a display panel. At least one stage includes first and second input circuits and output circuit, discharge circuit, pull down circuit, and hold circuit. The first input circuit delivers a (k−2)th gate signal to a first node. A second input circuit delivers a (k+1)th gate signal to the first node. The output circuit outputs a first clock signal as a k-th gate signal based on the first node. The discharge circuit discharges a second node based on the (k−2)th gate signal. The pull down circuit discharges the first node based on the second node and (k+2)th gate signal and discharges the k-th gate signal based on the second node and a (k+2)th gate signal. The hold circuit delivers a (k+3)th gate signal to the second node and maintains the signal level of the second node.

There is provided a drive method for a display device in which a plurality of pixel circuits are disposed in rows and columns, each of the plurality of pixel circuits including a light emitter that emits light in an amount according to a magnitude of a current supplied, and a drive transistor that supplies a current according to a magnitude of a video signal to the light emitter. The drive method includes applying an initialization voltage across a gate and a source of the drive transistor by an initialization voltage adjustment unit in an initialization period for initializing the drive transistor, the initialization voltage being higher than a threshold voltage of the drive transistor and according to a state of deterioration of the drive transistor.

A data driver includes: a signal generator which includes a staircase waveform gray voltage signal generator which generate a plurality of staircase waveform gray voltage signals using a lowest gamma reference voltage, a highest gamma reference voltage, and a plurality of gamma voltages having a magnitude between the lowest gamma reference voltage and the highest gamma reference voltage; and a channel driver which includes a decoder which output one staircase waveform gray voltage signal selected from the staircase waveform gray voltage signals, an output circuit which output a gray voltage corresponding to the selected staircase waveform gray voltage signal, and a reset unit which supplies one of the gamma voltages to the output circuit as a reset voltage.

The present disclosure discloses an organic light emitting display panel and a pixel compensation method. The organic light emitting display panel includes: a pixel array including pixel regions divided into M rows and N columns; a plurality of pixel driving circuits, each of the pixel driving circuits includes a light emitting diode and a driving transistor for driving the light emitting diode, and each of the light emitting diodes is located in the pixel regions; and a plurality of pixel compensation circuits configured to sample an anode voltage of the light emitting diode are in at least one of the pixel driving circuits. A light emitting current flows through the light emitting diode, and generates a compensation signal based on the anode voltage and the light emitting current.