TN-LCD HAVING IMPROVED VIEWING ANGLE

摘要

PURPOSE: A TN-LCD(Twisted Nematic Liquid Crystal Display) is provided to improve the characteristics of a viewing angle by forming various kinds of electric fields including electric fields bent symmetrically in a single pixel, electric fields vertical to a substrate and electric fields having different strength. CONSTITUTION: A lower substrate(50) having a pixel electrode(51) is positioned opposite to an upper substrate(60) having a counter electrode(61) with a specific distance. Herein, the specific distance is a cell gap. The common electrode is formed in plate type, and plural slits(510) are formed on the pixel electrode. The pixel electrode is divided into first to fourth areas. Forming the slits on the pixel electrode is for generating electric fields(E2) vertical to a substrate surface and electric fields(E1) distorted by the slits at the same time. To form electric fields having different strength in a unit pixel of the lower substrate, a passivation layer(54) is formed at the upper part. The passivation layer is divided to four areas like the pixel electrode. Plural opening are formed in at least one and more areas of the four areas. If an opening is formed on the passivation layer, strength difference of electric fields between the opening-formed area and a non-formed area is generated. If the distorted electric fields(E1) and the vertical electric fields(E2) are generated in a single pixel at the same time, the long axis of LC molecules(70a) is arranged parallel to the electric fields.