Electronic device and electronic apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 25, 2007
Issued Date -
N/A
app pub date -
Mar 22, 2005
filing date -
Apr 27, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
An EL display having high operating performance and reliability is provided. LDD regions 15a through 15d of a switching TFT 201 formed in a pixel are formed such that they do not overlap gate electrodes 19a and 19b to provide a structure which is primarily intended for the reduction of an off-current. An LDD region 22 of a current control TFT 202 is formed such that it partially overlaps a gate electrode 35 to provide a structure which is primarily intended for the prevention of hot carrier injection and the reduction of an off-current. Appropriate TFT structures are thus provided depending on required functions to improve operational performance and reliability.
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