In-plane switching mode lcd with specific arrangement of common bus line, data electrode, and common electrode

An liquid crystal display device, comprising:

• a substrate;
• a plurality of gate and data bus lines over the substrate, defining a plurality of pixel regions;
• a common bus line aligned in said pixel regions;
• a gate insulator over said common bus line;
• a thin film transistor coupled to each of said pixel regions and including at least a part of said gate insulator;
• a data electrode over said gate insulator and having a portion overlying said common bus line to form a first storage capacitor;
• a passivation layer over said data electrode and said thin film transistor;
• a common electrode over said passivation layer and at least partially overlying said data electrode to form a second storage capacitor;
• and
• a metal layer over said passivation layer and said thin film transistor.

An liquid crystal display device, comprising:

• first and second substrates having a plurality of pixel regions;
• a common bus line aligned in said pixel regions;
• a first insulating layer over said common bus line;
• a data electrode over said first insulating layer and having a portion overlying said common bus line to form a first storage capacitor;
• a second insulating layer over said data electrode;
• a common electrode over said second insulating layer, said common electrode having one or more openings, at least one of said openings having a substantially rectangular shape with four corner areas, at least one corner area being cut at an angle, and said common electrode having a portion overlying said data electrode to form a second storage capacitor;
• and
• a liquid crystal layer formed between said first and second substrates.