Samsung Display Co., Ltd.

Samsung Displayco., Ltd.

Min-Seok Bae

Jin-Woo Park

Chul Min Kim

Sang-Jin Pak

Dong-Won Lee

Cheol-Min Kim

Dong Won Lee

Su-Min Yang

Sunghoon Bang

Wooseok Han

Disclosed is a display device, which includes a display panel including a plurality of pixels, and one of the plurality of pixels includes a light emitting device connected to a first reference node and that emits light, a driving transistor connected between a power supply line receiving a power supply voltage and the first reference node, a scan transistor connected between a data line receiving a data signal and the driving transistor and that receives a scan signal, a first capacitor connected between the first reference node and a second reference node, a shared transistor connected between the first reference node and the second reference node and that receives a shared control signal, and the first capacitor and the shared transistor are connected in series between the first reference node and the second reference node, and a control electrode of the driving transistor is connected to the second reference node.

Display device

A display device includes a display panel including pixels, a data driver configured to apply a data voltage to each of the pixels, to apply a first reference voltage to the pixels in a first period of a first sensing period to generate first sensing data corresponding to a first driving current flowing through a driving transistor of each of the pixels, and to apply a second reference voltage to the pixels in a second period of the first sensing period to generate second sensing data corresponding to a second driving current flowing through the driving transistor of each of the pixels, and a driving controller configured to receive the first sensing data and the second sensing data from the data driver to compensate input image data based on the first sensing data and the second sensing data.

Display device and method of driving the same

A display apparatus includes a first compensator, a second compensator and a display panel including pixels. The first compensator generates a first compensation coefficient based on sensing data of a pixel of the pixels for a first grayscale value, generates a second compensation coefficient based on camera imaging data for a second grayscale value greater than the first grayscale value and compensates image data based on the first compensation coefficient and the second compensation coefficient. The second compensator compensates the image data by modeling sensing data of entire grayscale range based on sensing data of the pixel for a third grayscale value and a fourth grayscale value. The display panel displays an image based on the image data compensated by the first compensator and the second compensator.

Display apparatus and method of compensating image of display panel using the same

A display device includes a display panel including a plurality of data lines, a plurality of gate lines, and a plurality of pixels and a compensating data generator configured to sense a sensing driving current of the pixel in an Nth frame and a target driving current of the pixel in an (N+M)th frame, and to calculate an over driving data that allows the sensing driving current to be the same with the target driving current by changing a data voltage of the Nth frame when a sensing image having a first grayscale in a (N&#x2212;1)th frame and having a second grayscale in the Nth frame and the (N+M)th frame, where N is an integer greater than or equal to 2, and M is an integer greater than or equal to 1.

Display device and method for generating compensating data of the same

In a method of operating an organic light emitting display device including a plurality of pixels, an initialization voltage is applied to the plurality of pixels to store the initialization voltage in the plurality of pixels in a first period of an initial period. Driving transistors of the plurality of pixels are concurrently turned on based on the stored initialization voltage in a second period of the initial period, and a plurality of data voltages are sequentially applied to the plurality of pixels on a row-by-row basis to store the plurality of data voltages in the plurality of pixels in a data write period. The plurality of pixels concurrently emit light based on the plurality of data voltages in an emission period.

Method of operating an organic light emitting display device and organic light emitting display device

An organic light emitting display device includes a display panel including a plurality of pixels, a scan driver configured to provide a scan signal to the pixels, a data driver configured to provide a data signal to the pixels, a sensing circuit configured to sense a sensing current flowing through the pixels according to a sensing reference voltage applied to the pixels, and a controller configured to calculate a sensing current variation from the sensing current, and configured to adjust the sensing current variation based on a variation data of the pixels to compensate an input image data.

Organic light emitting display device for compensating deterioration of a pixel and method of driving the same

A gate driver is provided. The gate driver includes a plurality of cascade-connected stages. The k-th stage of the stages includes a switching unit for connecting a first node to a second node, a driving unit for generating an output signal in accordance with a voltage of the first node, and an input unit for inputting an output signal of a (k&#x2212;1)-th stage of the stages and an output signal of a (k+1)-th stage of the stages to the second node.

Gate driver and display device including the same

A gate driving circuit includes a plurality of stages, each stage including an input unit to determine a level of voltage to input to a first node based on the first and second input signals and the first clock signal that is input according to the level of the voltage input to the first node and a first gate-off voltage that is input in response to the second clock signal, a second driving unit outputting the gate signals based on the third clock signal input according to the voltage input to the first node and a second gate-off voltage input in response to the second clock signal, and a leakage blocking unit blocking leakage current of a transistor by maintaining a level of voltage input to a third node connected to the first node via at least one transistor.

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Hwaseong-si, South Korea

Min-Seok Bae