Lg Display Co., Ltd.

Jeonghyo Park

GeunWoo Lee

Minho Cho

A display device includes a display panel comprising subpixels, data lines, and driving transistors, a data driving circuit configured to convert image data into data voltages and apply the data voltages to the data lines, and a timing the controller configured to control the data driving circuit and switch between a first compensation mode and a second compensation mode responsive to a driving frequency variation of the display device during exceeding a reference value, wherein, in the first compensation mode, the data voltages of the driving transistors in an entire area of the display panel are compensated through a real-time sensing process of characteristic values of the driving transistors during a blank period, and in the second compensation mode, the data voltages of the driving transistors in at least a partial area of the display panel are compensated according to a temperature value of the display panel.

Display device and display driving method

A display device and a display driving method are disclosed. The display device includes a display panel including gate lines, data lines, and a plurality of subpixels including a plurality of driving transistors, a gate driving circuit configured to apply scan signals to the gate lines, a data driving circuit configured to convert image data into data voltages and apply the data voltages to the data lines, and a timing controller configured to compensate the data voltages applied to the plurality of driving transistors based on a real-time sensing process of characteristic values of the plurality of driving transistors, and control an application of a recovery voltage to at least one driving transistor of the plurality of driving transistors a plurality of times within a blank period of a frame period based on a reference period to reset the at least one driving transistor during the blank period.

A display device may include: a display panel configured to be driven in an active time and a blank time within one frame and including pixels each having a driving transistor; a data driver configured to provide a first data voltage based on an image data to the pixels in the active time; and a timing controller configured to compensate for the image data based on a first compensation data for a threshold voltage of the driving transistor and a second compensation data for a mobility of the driving transistor, the timing controller including a data compensator, a non-volatile memory, and volatile memories. The timing controller may be further configured to read a reference first compensation data from the non-volatile memory in the active time and update the first compensation data and the second compensation data to be stored in one of the volatile memories in the blank time.

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Paju-si, South Korea

Jeonghyo Park