Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Patent
1997-06-25
1999-08-24
Sikes, William L.
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
349 38, 349140, 257 57, G02F 11343, H01L 2904
Patent
active
059431059
ABSTRACT:
A liquid crystal display device comprises a gate signal wiring formed on a substrate, a data signal wiring insulated from the gate signal wiring and formed to perpendicularly cross the gate signal wiring, a switching element provided near the perpendicularly crossing portion of the gate signal wiring and the date signal wiring and having a gate electrode and source/drain electrodes, an interlayer insulating film, and a pixel electrode disposed in the region surrounded by the gate signal wiring and the data signal wiring and on the interlayer insulating film, wherein the gate signal wiring is connected with the gate electrode, the data signal wiring is connected with one of the source/drain electrodes, the pixel electrode is connected with the other of the source/drain electrodes through a contact hole penetrating through an interlayer insulating film and via a connecting electrode, and, the width of the contact hole at the aperture surface of the contact hole is reduced by setting the height from the surface of the substrate to the bottom of the contact hole to be larger than the height of the contact hole.
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Fujikawa Takashi
Kataoka Yoshiharu
Nishiki Hirohiko
Conlin David G.
Horney Kari M.
Neuner George W.
Sharp Kabushiki Kaisha
Sikes William L.
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