A pixel driving device for a liquid crystal display (LCD) panel includes first and second transistors and first and second storage capacitors. The second transistor has a gate electrode coupled to a gate electrode of the first transistor, and a drain electrode coupled to a drain electrode of the first transistor. The first storage capacitor has a capacitor terminal coupled to a source electrode of the first transistor. The second storage capacitor has a first capacitor terminal coupled to a source electrode of the second transistor, and a second capacitor terminal coupled to the gate electrode of the first transistor of the pixel driving device in another pixel row of the LCD panel.