초록 ▼

A liquid crystal display device having an array substrate, a counter substrate and liquid crystal material between these two substrates. The array substrate has a plurality of pixel electrodes and auxiliary capacitors corresponding to each of the pixel electrodes. The auxiliary capacitor has a MOS s

A liquid crystal display device having an array substrate, a counter substrate and liquid crystal material between these two substrates. The array substrate has a plurality of pixel electrodes and auxiliary capacitors corresponding to each of the pixel electrodes. The auxiliary capacitor has a MOS structure comprising a lower electrode made of semiconductor material, an upper electrode made of metal material, and insulating layer between these two electrodes. The upper electrode has a notch region. Therefore, hydrogen is doped into the semiconductor from the notch region, not only from the edge portion uncovered by the upper electrode. In accordance with this composition, it is possible to reduce the manufacturing cost, to realize high characteristic display, and so on.

대표청구항 ▼

[ What is claimed is:] [1.] A liquid crystal display device comprising:an array substrate;a plurality of scanning lines and signal lines on said array substrate in a matrix fashion;a plurality of thin film transistors each in the vicinity of an intersection of said scanning lines and said signal lin

[ What is claimed is:] [1.] A liquid crystal display device comprising:an array substrate;a plurality of scanning lines and signal lines on said array substrate in a matrix fashion;a plurality of thin film transistors each in the vicinity of an intersection of said scanning lines and said signal lines;a plurality of pixel electrodes each connected to one of said thin film transistors;a plurality of auxiliary capacitors each connected to one of said pixel electrodes, each of said auxiliary capacitors including a first electrode over said array substrate, an insulating layer over said first electrode, and a second electrode over said first electrode, said insulating layer being between said first electrode and said second electrode;a counter substrate opposite said array substrate; anda liquid crystal layer between said array substrate and said counter substrate;said second electrode having an opening region overlapping said first electrode and being enclosed on all sides,each of said pixel electrodes being connected to said first electrode through a contact hole of said insulating layer, andsaid first electrode having an edge region extending from an edge of said second electrode in a plane.