Lateral electric field type liquid crystal display device

摘要

A lateral electric field type liquid crystal display device includes substrates, liquid crystal put between the substrates, scan lines and data lines arranged on one of the substrates, and pixels each of whose boundary is defined by two scan lines and two data lines. In each pixel, a strip-shaped electrode and a common electrode are formed with an insulating film put thereamong, and the pixel electrode is arranged to extend close along one of the data lines. In each pixel, a part of the common electrode covering one of the data lines overlaps with the pixel electrode, the pixel electrode partially projects from the overlapping area, and a side edge of the projecting part of the pixel electrode is separated from a side edge of a part of the common electrode covering the other data line so as to generate a lateral electric field to drive the liquid crystal.

主权项

1. A lateral electric field type liquid crystal display device configured to perform a display control by changing a molecule orientation of homogeneous-aligned liquid crystal using an electric field almost parallel with substrates of the display device, the display device comprising:
a first substrate and a second substrate facing each other; liquid crystal put between the first substrate and the second substrate; a plurality of scan lines and a plurality of data lines both arranged on the first substrate; and a plurality of pixels each of whose boundary is defined by two of the scan lines and two of the data lines, wherein each of the pixels includes only one strip-shaped pixel electrode which is arranged to be closer to one of the two data lines than the other and to extend along the one of the two data lines, a common electrode including a first common electrode part covering the one of the two data lines and a second common electrode part covering the other of the two data lines, and an insulating film arranged between the pixel electrode and the common electrode, separating the pixel electrode from the common electrode, and wherein, in each of the pixels, the first common electrode part and the pixel electrode overlap together to form an overlapping area which includes a part extending over the entire length of the pixel electrode along the one of the two data lines, the pixel electrode includes a projecting part which projects from the overlapping area toward an inside of the each of the pixels, and a side edge of the projecting part of the pixel electrode is separated from a side edge of the second common electrode part so as to generate a lateral electric field therebetween to drive the liquid crystal.