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公开(公告)号：US11631374B2
公开(公告)日：2023-04-18
申请号：US17874680
申请日：2022-07-27
Inventor： Jeonkyoo Kim , Soo Yeon Lee , Manseung Cho , Kyeong Soo Kang , Junhee Moon , Bonghyun You , Jin Kyu Lee
IPC: G09G3/3291 , G09G3/3266
Abstract: 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.
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公开(公告)号：US20200150805A1
公开(公告)日：2020-05-14
申请号：US16573539
申请日：2019-09-17
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jeonkyoo Kim , Dong Won Lee , Jaekeun Lim
Abstract: A display device includes a display panel that includes a plurality of pixels, a touch panel that includes a plurality of driving lines and a plurality of sensing lines, a display driver that drives the display panel at a first display frame rate in a normal driving mode, and that drives the display panel at a second display frame rate lower than the first display frame rate in a low power driving mode, and a touch controller that drives the touch panel with a mutual capacitance sensing method in the normal driving mode, and that drive the touch panel with a self capacitance sensing method in the low power driving mode.
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