Liquid crystal display panel capable of reducing persistence degree and development method thereof

摘要

AC voltage of rectangular wave is applied between a pixel electrode 25 A and a common electrode 23 A, and the amplitude Vac of the AC voltage component and the DC voltage component Vdc thereof are changed to measure the range of optimal DC component variation DeltaVdc and determine a structure or material of a liquid crystal display device so as to lower DeltaVdc less than a given value, wherein DeltaVdc=|Vdcb-Vdcw|, Vdcb is the value of Vdc at which the range of transmittance variation is the minimum with Vac being fixed at a value for displaying black (2V), and Vdcw is the value of Vdc at which the range of transmittance variation is the minimum with Vac being fixed at a value for displaying white (7 V). Thickness of an insulating layer 26 A on the pixel electrode 25 A and on the common electrode 23 A are the same. Electrode crossover portions are made to be in axial symmetry. The top surface of each stripe electrode of a pixel electrode has convex shape in cross section.