Patent ID: 9721525
Date: 2017-08-01
CPC Classifications: G09G

Claim:
1. A display apparatus comprising: a display panel configured to display an image; a data driver that comprises a voltage generator configured to convert an image data applied thereto to a data voltage, a buffer configured to apply the data voltage to the display panel, a driving voltage switch configured to switch an analog driving voltage input to the voltage generator and the buffer, and a bias controller configured to control a bias current applied to the buffer; and a timing controller that comprises a mode controller configured to generate a mode selection signal on the basis of an image frame rate of the image data, wherein the data driver is configured to be operated in a power cut-off mode or a stand-by mode in response to the mode selection signal, the driving voltage switch is configured to cut off the analog driving voltage applied to at least one of the buffer and the voltage generator during the power cut-off mode, and the bias controller is configured to reduce the bias current in the stand-by mode, wherein the data driver is configured to be operated in the power cut-off mode when the image frame rate is smaller than a first reference frame rate and the data driver is configured to be operated in the stand-by mode when the image frame rate is greater than the first reference frame rate.