Vertical alignment liquid crystal display device having planarized substrate surface

A liquid crystal display that includes first and second substrates facing each other and liquid crystal disposed between the first and second substrates, the liquid crystal display comprising:

• at least one thin film transistor formed on the first substrate and at least one electrode wire for supplying signals to the thin film transistor;
• a planarization insulating film formed to cover upper portions of the thin film transistor and the electrode wire;
• for each pixel, at least one pixel electrode for driving the liquid crystal, formed on the planer surface of the planarization insulating film, having the entire surface facing the liquid crystal substantially planarized, and connected to the corresponding thin film transistor via a contact hole;
• and
• a rubbing-less vertical alignment film formed to cover the pixel electrode;
• wherein,
• a common electrode for driving the liquid crystal, an alignment control window formed on a position opposing the pixel electrode on the common electrode, and a rubbing-less vertical alignment film formed to cover the common electrode and the alignment control window are provided on the second substrate opposing the first substrate,
• the liquid crystal has a negative dielectric constant anisotropy,
• an original alignment of liquid crystal molecules is controlled in a normal direction of the substrates, the planarization insulating film has a planar surface to help the initial orientation of the liquid crystal molecules to be controlled in a normal direction with respect to the substrates, and
• alignment direction of the liquid crystal molecules is controlled by a slanting electric field produced by the common electrode, alignment control window, and the pixel electrode.