Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Reexamination Certificate
2008-07-11
2011-11-15
Doan, Jennifer (Department: 2874)
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
C349S025000, C349S042000, C349S044000, C349S045000, C349S047000
Reexamination Certificate
active
08059222
ABSTRACT:
An active matrix substrate in which variations in output characteristics of photodiodes are reduced, and a display device using this active matrix substrate, are provided. An active matrix substrate (1) having an n-TFT (20), a p-TFT (30), and a photodiode (10) is used. The photodiode (10) includes a p-layer (7), an i-layer (8), and an n-layer (9). The i-layer (8) includes a p-type semiconductor region (8a) at a position adjacent to the player (7), said p-type semiconductor region (8a) having a diffusion concentration of p-type impurities that is set at the same level as that of a diffusion concentration of p-type impurities in the channel region (23) of the n-TFT (20); and an n-type semiconductor region (8b) at a position adjacent to the n-layer (9), said n-type semiconductor region (8b) having a diffusion concentration of n-type impurities that is set at the same level as that of a diffusion concentration of n-type impurities in the channel region (33) of the p-TFT (30).
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International Search Report for PCT/JP2008/062592, mailed Oct. 21, 2008.
Hadwen Benjamin James
Katoh Hiromi
Doan Jennifer
Nixon & Vanderhye P.C.
Sharp Kabushiki Kaisha
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