A DISPLAY DRIVER FOR IMPROVING BRIGHTNESS CONTROL IN A DISPLAY UNIT, AND A METHOD THEREFOR

摘要

The invention relates to a display driver (10) for a display unit (50) having a memory element and a liquid crystal cell (20) includes a first display driver circuit having a first storage capacitor (14) and a first differential amplifier (16) coupled between the first storage capacitor and the liquid crystal cell and a second display driver circuit having a second storage capacitor (140 an a second differential amplifier (160 coupled between the second storage capacitor and the liquid crystal cell. The display driver also includes a first switching mechanism (22 and 24) enabling the switching of the display driver between the first display driver circuit during a positive frame and a second display driver circuit during a negative frame and a second switching mechanism (26 and 28) coupled to a supply voltage (VDD and VSS). The second switching mechanism is controlled by at least one global address line (V3 or V4).