Patent ID: 6900853

Claim:
A liquid crystal display device, comprising: a pair of substrates being arranged opposite to each other; and a liquid crystal layer being interposed between main surfaces of the pair of substrates, wherein pixel regions each of which includes a switching element and a pixel electrode connected to the switching element and a protective film including a plurality of material layers laminated at the liquid crystal layer side of the switching elements are formed on a main surface of one of the pair of substrates facing the liquid crystal layer, the plurality of material layers include at least a first material silicon nitride layer and a second material layer which is arranged closer to the liquid crystal layer side than the first layer, the second material layer exhibits resistivity which is lower than resistivity of the first material layer and higher than resistivity of silicon, and each of the first and second material layers contains silicon and nitride, and the second material layer has a smaller composition ratio of nitrogen to silicon than the first material layer.