Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2007-04-17
2007-04-17
Quach, T. N. (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S402000, C257SE29273
Reexamination Certificate
active
10808344
ABSTRACT:
In the case of using an analog buffer circuit, an input voltage is required to be added a voltage equal to a voltage between the gate and source of a polycrystalline silicon TFT; therefore, a power supply voltage is increased, thus a power consumption is increased with heat. In view of the foregoing problem, the invention provides a depletion mode polycrystalline silicon TFT as a polycrystalline silicon TFT used in an analog buffer circuit such as a source follower circuit. The depletion mode polycrystalline silicon TFT has a threshold voltage on its negative voltage side; therefore, an input voltage does not have to be increased as described above. As a result, a power supply voltage requires no increase, thus a low power consumption of a liquid crystal display device in particular can be realized.
REFERENCES:
patent: 4929884 (1990-05-01), Bird et al.
patent: 5015594 (1991-05-01), Chu et al.
patent: 5899732 (1999-05-01), Gardner et al.
patent: 5949107 (1999-09-01), Zhang
patent: 5949271 (1999-09-01), Fujikura
patent: 6013930 (2000-01-01), Yamazaki et al.
patent: 6031249 (2000-02-01), Yamazaki et al.
patent: 6057183 (2000-05-01), Koyama et al.
patent: 6077758 (2000-06-01), Zhang et al.
patent: 6087245 (2000-07-01), Yamazaki et al.
patent: 6127857 (2000-10-01), Ogawa et al.
patent: 6165876 (2000-12-01), Yamazaki et al.
patent: 6197624 (2001-03-01), Yamazaki
patent: 6225866 (2001-05-01), Kubota et al.
patent: 6313819 (2001-11-01), Maekawa et al.
patent: 6353244 (2002-03-01), Yamazaki et al.
patent: 6441399 (2002-08-01), Koyama et al.
patent: 6639246 (2003-10-01), Honda
patent: 6872640 (2005-03-01), Mouli
patent: 6960498 (2005-11-01), Nakamura
patent: 2002/0142525 (2002-10-01), Ohnuma
patent: 2003/0178682 (2003-09-01), Noda et al.
patent: 2004/0038465 (2004-02-01), Shimomura et al.
patent: 11-073165 (1999-03-01), None
patent: 2000-194323 (2000-07-01), None
patent: 3201910 (2001-08-01), None
Quach T. N.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
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