Double-layer ultra-torsion nematic liquid crystal display panel and its aberration compensation method

A dual super twisted nematic liquid crystal display with a visible range and a display region arranged in the visible range comprises an active liquid crystal unit and a compensating liquid crystal unit overlapped on the active liquid crystal unit. The active crystal liquid unit comprises a first active electrode layer, a second active electrode layer and an active liquid crystal layer, wherein the active liquid layer is arranged between the first active electrode layer and the second active electrode layer, and the first and second electrode layers are disposed in the display region. The compensating liquid crystal unit comprises a first compensating electrode layer, a second compensating electrode layer and a compensating liquid crystal layer between the first and second compensating electrode layers, wherein the first compensating electrode layer and the second compensating electrode layer are arranged in the display region. In the display region, a dark-state electric field applied to the compensating liq