Semiconductor device method for producing the same and liquid crystal display including the same
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United States of America Patent
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Apr 28, 1998
Issued Date -
N/A
app pub date -
May 27, 1997
filing date -
Jun 15, 1994
priority date (Note) -
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Abstract
A liquid crystal display device including: a display section including a liquid crystal layer; a pair of substrates interposing the liquid crystal layer; a plurality of pixel electrodes located in a matrix on one of the pair of substrates; a plurality of first thin film transistors respectively connected to the plurality of pixel electrodes; and a peripheral driving circuit located for driving the display section, the peripheral driving circuit being located on the substrate on which the first thin film transistors are located and having a second thin film transistor. Each of the first thin film transistors includes a first channel layer formed of a first crystalline silicon layer, and the second thin film transistor includes a second channel layer formed of a second crystalline silicon layer having a higher mobility than the mobility of the first crystalline silicon layer. The second crystalline silicon layer includes a catalytic element for promoting crystallization.
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