In a liquid crystal display device which performs image display by controlling a liquid crystal layer by a lateral electric field that is parallel with a substrate, the lateral electric field is formed by a black matrix and a pixel electrode. That is, a common electrode and a black matrix are commonized...http://www.google.com.au/patents/US6771342?utm_source=gb-gplus-sharePatent US6771342 - Liquid crystal display device and display device
