Liquid crystal display and manufacturing method therefor

Abstract

A liquid crystal displayof the invention has a transparent substrateon which are provided multiple signal lines, scan linesand auxiliary capacity lines, plus TFTs and pixel electrodesthat are electrically coupled to the TFTs' drain electrodes D. The auxiliary capacity linesare formed with an Al—Nd alloy layer coated with a layer of molybdenum. Each pixel region, except for the auxiliary capacity lower electrodeon the auxiliary capacity line, is coated over by a first insulating filmand by a second insulating filmthat is thinner than the first insulating film. Further, the auxiliary capacity lower electrodesare coated over by the second insulating film, and auxiliary capacity upper electrodesare provided on the surface of the second insulating filmat the auxiliary capacity lower electrodes. Thanks to such structure, a small-pixel-area or high-definition liquid crystal display, and manufacturing method therefor, can be provided whereby short circuits in the regions forming the auxiliary capacity are few, the auxiliary capacity is large, and display irregularities such as crosstalk or flicker are satisfactorily curbed.