Liquid crystal display
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United States of America Patent
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Apr 25, 2006
Grant Date -
Oct 30, 2003
app pub date -
Apr 22, 2003
filing date -
Apr 30, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Portions of a liquid crystal layer and an alignment layer in an LCD which are electrically connected to a scan signal line or to a gate electrode are protected from exposure. Such an LCD can be formed from a five step photo lithographic process. Pixel electrodes A11 and B11 are connected to a common display signal line Dm. TFTs M1 and M2 are connected in series between the pixel electrode A11 and the display signal line Dm. A TFT M3 is connected between the pixel electrode B11 and the display signal line Dm. TFTs M1 and M3 use a scan signal line Gn+1 as respective gate electrodes thereof. TFT M2 uses a scan signal line Gn+2′ branched from a scan signal line Gn+2 as a gate electrode thereof. The scan signal lines Gn+1 and Gn+2′ are arranged parallel to each other inside a display region. The semiconductor layer structure of the LCD is also disclosed.
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