Method of making an LCD or X-ray imaging device with first and second insulating layers
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United States of America Patent
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Mar 19, 2002
Grant Date -
Aug 16, 2001
app pub date -
Oct 20, 1997
filing date -
Oct 20, 1997
priority date (Note) -
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Abstract
This invention is related to an active matrix liquid crystal display (AMLCD) or an X-ray imaging device having a high aperture ratio, and method of making same. The imager or display has an increased aperture ratio because electrodes are formed over dual insulating layers so as to overlap portions of the array address lines and/or TFTs. Both the manufacturability and capacitive crosstalk of the device are improved due to the use of a photo-imageable organic insulating layer between the pixel electrodes and the address lines. An intermediate inorganic insulating layer is provided between the photo-imageable organic insulating layer and the overlapped TFTs in order to prevent the organic insulating layer from directly contacting semiconductor material in the TFTs thereby reducing potential voltage swings.
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