Lg Display Co., Ltd.

SinKyun Park

EungKyu Kim

MooKyoung Hong

HyeonWoo Lee

Uitaek Jeong

DongKyu Yang

SeungWon Lee

A display device includes a sub-pixel comprising a light emitting device and a driving transistor DRT electrically connected to a first electrode of the light emitting device and configured to drive the light emitting device, and a reference voltage line electrically connected to the sub-pixel SP and applying an initialization voltage to the first electrode of the light emitting device, wherein a voltage level of the initialization voltage is changed according to a length of a blank period, thereby improving display quality of the image at a low refresh rate in a variable refresh rate mode.

Display device

A display device can include a display panel having a plurality of subpixels; a gate driving circuit configured to supply a plurality of scan signals to the display panel through a plurality of gate lines, and output a feedback voltage; a data driving circuit configured to supply a plurality of data voltages to the display panel through a plurality of data lines; a power management circuit configured to supply a plurality of driving voltages to the gate driving circuit and the data driving circuit, and supply a compensating high-potential gate voltage to the gate driving circuit based on the feedback voltage transferred from the gate driving circuit. The display device can further include a timing controller configured to control the gate driving circuit, the data driving circuit, and the power management circuit.

Display device and driving circuit

A display device is provided in which a control switching element arranged in a location to which a voltage used for driving a display panel is applied may identify whether an abnormal current has occurred in the display panel in an off-situation so as to easily and accurately detect whether or not a panel defect exists, in a panel defect detection interval wherein the panel defect detection interval is an interval having no abnormal current occurring therein when no panel defect exists. A panel defect detection system and a panel defect detection method are also provided.

Display device, panel defect detection system, and panel defect detection method

An organic light emitting display device is provided. The organic light emitting display device includes a conductive pattern of which impedance varies due to damage or heat generation of a panel and senses the damage or heat generation of the panel by using the conductive pattern.

Growing community of inventors

Gyeonggi-do, South Korea

SinKyun Park