Samsung Display Co., Ltd.

Il-Hun Jeong

Jae-Hoon Lee

Hai-Jung In

Yong-Sung Park

Woo-Seok Jang

A pixel circuit comprises a light emission element; a driving transistor including a first electrode connected to the first node, a second electrode connected to a second node, and a gate electrode connected to a third node; a first transistor including a first electrode receiving a third voltage, a second electrode connected to the first node, and a gate electrode receiving a second light emission control signal; a first transistor including a first electrode connected to a first line transferring a first power voltage, a second electrode connected to the second node, and a gate electrode receiving a first light emission control signal; a first storage capacitor connected between the third node and a fourth node; and a switching transistor including a first electrode connected to a data line, a second electrode connected to the fourth node, and a gate electrode receiving a scan signal.

Pixel circuit and method of driving the same

A method of driving a display device includes calculating an average load and an asymmetry by analyzing an input image data, and adjusting at least one of a high data voltage and a low data voltage, which are supplied to a display panel of the display device, based on the average load and the asymmetry.

Display device and method of driving display device

A display device includes a display panel including a plurality of pixels, a power supply transmitting driving power to the pixels via a power line and stopping transmission of the driving power in response to a crack signal, a panel driver provides a driving signal to the pixels, the driving signal for displaying a black image during a non-emission period of each frame period and displaying a valid image during an emission period of each frame period, and a crack detector senses a current flowing through the power line and conditionally generate the crack signal according to values of the current sensed over M successive frame periods, where M is an integer greater than 1.

Display device having improved crack detection capability and method of driving the same

A method of driving an organic light emitting display device includes performing a digital driving on a display panel supplied with a first power voltage through a first power supply line, generating a target voltage signal of the first power voltage by analyzing input image data provided to the display panel, measuring an output current that flows through the first power supply line, and changing the first power voltage based on a measured output current and the target voltage signal.

Organic light emitting display device changing power voltage based on measured output current and method of driving the same

An organic light emitting display includes: a display panel including pixels at crossing regions of data lines and scan lines; a scan driver configured to divide one frame into a plurality of sub-fields, to divide each of the subfields into p (p is a positive integer of 2 or more) periods, and to supply scan signals to the scan lines; and a data driver configured to supply data voltages to the data lines concurrently with supply of respective scan signals, wherein a gray scale voltage from among (P+1) gray scale voltages is supplied as at least one of the data voltages.

Organic light emitting display and method for driving the same

An electroluminescent display for adaptive voltage control and method of driving electroluminescent display are disclosed. In one aspect, the method includes digitally driving a display panel including a plurality of pixels based on a first power supply voltage, a second power supply voltage lower than the first power supply voltage, a first data voltage and a second data voltage lower than the first data voltage. The method also includes sensing a global current provided to the display panel, generating a current detection signal based on the sensed global current, and varying at least one of the first and second data voltages based on the current detection signal.

Electroluminescent display for adaptive voltage control and method of driving electroluminescent display

A display apparatus includes a display panel, a gate driver, a data driver and a coupling voltage generator. The display panel includes a plurality of pixels. The gate driver provides a gate signal to the display panel. The data driver provides a data voltage to the display panel. The coupling voltage generator provides a coupling voltage to the display panel. The coupling voltage has a plurality of levels.

Display panel driver, method of driving display panel using the same, and display apparatus having the same

A display device which includes a substrate having a pixel unit that receiving first and second voltages is disclosed. In one aspect, the first and second power lines are coupled to the first and second voltages, and are supplied to the pixel unit via first and second power pads. In some aspects, the first and second power pads are alternately disposed while being spaced apart from each other in at least a portion of the peripheral area, and the second power pads are disposed in the space between the respective first power pads.

Growing community of inventors

Yongin-si, South Korea

Il-Hun Jeong