Abstract: In a liquid crystal display device of a lateral electric field driving system, coloring problem in display is prevented in all the white, intermediate tone and the black display mode.

Abstract: Disclosed is an active matrix liquid-crystal display device, which has: an electrode-formed substrate which is composed of a drain signal electrode, a gate signal electrode, a pixel electrode and a common electrode to compose a pixel unit, and an active element; a color-filter-formed substrate where no electrode is formed and a color filter layer of red (R), green (G) and blue (B) to color light transmitted therethrough is formed; and a liquid-crystal layer sandwiched between the electrode-formed substrate and the color-filter-formed substrate; wherein the fieldthrough of respective color layers (R, G, B) of the color filter layer is equalized.

Abstract: In an LCD device of an IPS (In-Plane Switching) mode having two alignment films which are subjected to individual aligning treatments and between which liquid crystal molecules are interposed and sealed, the aligning treatments of the two alignment films are carried out in the same directional orientation to put the molecules into a state of splay alignment. Specifically, parts of the molecules adjacent to the two alignment films have pretilt angles each of which has an absolute value not smaller than two degrees due to influence of the aligning treatments. Therefore, an appearance of undesirable light points is suppressed in the manufacturing the LCD device, and the LCD device has a good yield.