DISPLAY DEVICE AND DRIVE METHOD THEREOF

摘要

Provided are a display device capable of preventing burning by suppressing occurrence of a VCOM shift which occurs when a liquid crystal panel is driven for a long period of time, and a drive method thereof. Since a source output voltage corresponding to each of tone levels from a tone value 0 to a tone value 224 agrees with a flicker regulation voltage, a shift amount from the flicker regulation voltage is set to 0 mV, and a source output voltage corresponding to a tone value 255 is obtained by further adding +40 mV as a shift amount to 4.05 V which is the flicker regulation voltage. In such a manner, a source output voltage, increased at a high tone level and in the vicinity thereof, is applied to source bus lines SL1 to SLm and written into each liquid crystal capacitance Ccl.

主权项

1. An active matrix-type display device which is subjected to AC drive, the device comprising:
a plurality of scanning signal lines and a plurality of data signal lines that intersect with the plurality of scanning signal lines; a plurality of pixel formation portions arranged in a matrix form, respectively corresponding to intersections of the plurality of scanning signal lines and the plurality of data signal lines; a scanning signal line drive circuit configured sequentially to activate the plurality of scanning signal lines; a date signal line drive circuit configured to apply a flicker regulation voltage, which has been regulated so as to display an image with the minimum flicker, to the plurality of data signal lines in order to write the flicker regulation voltage into the pixel formation portion connected to a selected scanning signal line; and a display control circuit configured to give a predetermined control signal to the scanning signal line drive circuit and the date signal line drive circuit, to perform control, wherein one of the date signal line drive circuit and the display control circuit adds a plus shift amount to the flicker regulation voltage with a tone level in a predetermined range which at least includes the highest tone level.