Electronic paper display and driving method thereof

An electronic paper display, comprising:

• a first substrate (1) and a second substrate (2) arranged oppositely to each other, and an electronic ink layer (3) disposed between the first substrate (1) and the second substrate (2), a common electrode (10) being disposed on a side of the first substrate (1) facing the electronic ink layer (3), and a plurality of pixel units (4) being disposed on a side of the second substrate (2) facing the electronic ink layer (3),
• wherein, each pixel unit (4) comprises two sub-pixel electrodes (41), the two sub-pixel electrodes (41) are each connected to respective one of two source lines (42), and the two source lines (42) are both connected to a gate line (43);
• the two source lines (42) and the two sub-pixel electrodes (41) are arranged at intervals along a first direction (X), and the first direction (X) is an extension direction of the gate line (43);
• and
• the common electrode (10) comprises two sub-common electrodes (11) arranged at intervals along a second direction (Y), and orthographic projections of the two sub-common electrodes (11) on the two sub-pixel electrodes (41) are spaced apart from each other to form four mutually independent sub-pixel opening areas (100), the second direction (Y) is perpendicular to the first direction (X).