Samsung Display Co., Ltd.

Seoul National University

Junhee Moon

Jin Kyu Lee

Bonghyun You

Manseung Cho

JeonKyoo Kim

Soo Yeon Lee

Kyeong Soo Kang

Hui Nam

Taehoon Kim

Sangan Kwon

Soon-Dong Kim

Changnoh Yoon

Eun Sil Yun

A display device includes a sensing circuit and a controller which selects a pixel row in a frame period. A vertical blank period of the frame period includes a sensing time in which the sensing circuit performs a sensing operation for the selected pixel row. The sensing circuit measures a first source voltage of a driving transistor of a pixel in the selected pixel row at a first time point of the sensing time, and measures a second source voltage of the driving transistor at a second time point of the sensing time. The controller calculates a threshold voltage parameter and a mobility parameter based on the first and second source voltages, predicts a saturated source voltage of the driving transistor based on the threshold voltage parameter and the mobility parameter, and calculates a threshold voltage of the driving transistor based on the saturated source voltage.

Display device, and method of sensing a driving characteristic

Provided is a display device. The display device includes a display panel that includes a first display region and a second display region, a data driving circuit configured to drive a plurality of data lines, a scan driving circuit configured to drive a plurality of scan lines, and a driving controller configured to control the data driving circuit and the scan driving circuit so as to operate the first display region and the second display region at different frequencies when an operation mode is a multi-frequency mode, wherein the driving controller changes the operation mode to a normal mode when a difference between an image signal of a current frame of the first display region and an image signal of a previous frame of the first display region is equal to or greater than a reference value during the multi-frequency mode.

Display device and driving method thereof

Growing community of inventors

Suwon-si, South Korea

Junhee Moon