An electronic-ink display panel including an active matrix substrate, a front plane laminate and an electronic-ink layer is provided. The active matrix substrate has multiple pixel units. Each pixel unit includes multiple sub-pixel units, and each sub-pixel unit has a storage capacitor. In the same pixel unit, the capacitance of the storage capacitor of at least one sub-pixel unit is different from those of the storage capacitors of the other sub-pixel units. The front plane laminate is disposed above the active matrix substrate and the electronic-ink layer is disposed between the active matrix substrate and the front plane laminate.