Samsung Display Co., Ltd.

Jin Won Jang

Seung Won Kuk

Myung Chul Kim

A display device includes a pixel circuit configured to generate a driving current based on a data signal supplied to a data line, a first light-emitting stage configured to emit light based on the driving current, and including first light-emitting elements connected in parallel, a detector configured to detect voltages of respective ends of the first light-emitting stage, and a current compensator configured to compensate for a current flowing through the first light-emitting stage based on a first voltage difference between the voltages of the respective ends of the first light-emitting stage.

Display device and method of driving the same

A display device comprises pixels arranged along rows and columns, and including light-emitting elements, a first transistor for supplying a driving current to the light-emitting elements, a second transistor for supplying a data voltage to a first node at a gate electrode of the first transistor, a third transistor for electrically connecting a second node, which is at a first electrode of the light-emitting elements, and a sensing line, and a fourth transistor for electrically connecting a third node, which is at a second electrode of the light-emitting elements, and the sensing line, and a display driver for driving the pixels, for sensing voltages of the second node and the third node to calculate a driving voltage across the light-emitting elements, and for compensating for the data voltage in case that the driving voltage exceeds a reference voltage.

Display device for reducing deterioration of light-emitting elements

A display device includes pixels electrically connected to a plurality of scan lines and a plurality of data lines, respectively, a scan driver that provides a scan signal to each of the plurality of scan lines, a voltage supply that supplies a first gate voltage to the scan driver through a first gate power line, and a voltage compensator. The voltage compensator senses a partial voltage of the first gate voltage applied to the scan driver through a feedback line. The voltage compensator compensates the first gate voltage with a second gate voltage in case that the sensed first gate voltage is greater than a first reference voltage.

Display device with compensated voltage supplied to scan driver

A display device includes a plurality of pixels on a substrate, each of the plurality of pixels including a pixel circuit to drive a plurality of light emitting elements, wherein the pixel circuit of each of the plurality of pixels includes: a first transistor configured to supply a driving current to a first electrode of the light emitting elements; and a plurality of light emitting groups, each of the light emitting groups including some of the light emitting elements and a bypass unit connected between the first electrode and a second electrode of the some of the light emitting elements to selectively bypass a part of the driving current.

Growing community of inventors

Asan-si, South Korea

Jin Won Jang