Methods and apparatus for resistance variable material cells

Details Methods and apparatus for resistance variable material cells Methods and apparatus for resistance variable material cells

2005-02-01

2005-02-01

Nelms, David (Department: 2818)

Active solid-state devices (e.g., transistors, solid-state diode

Thin active physical layer which is

Tunneling through region of reduced conductivity

C257S002000, C257S028000, C369S275200, C430S311000, C430S323000

Reexamination Certificate

active

06849868

ABSTRACT:
The present invention is related to methods and apparatus to produce a memory cell or resistance variable material with improved data retention characteristics and higher switching speeds. In a memory cell according to an embodiment of the present invention, silver selenide and a chalcogenide glass, such as germanium selenide (GexSe(1−x)) are combined in an active layer, which supports the formation of conductive pathways in the presence of an electric potential applied between electrodes. Advantageously, embodiments of the present invention can be fabricated with relatively wide ranges for the thicknesses of the silver selenide and glass layers.

REFERENCES:
patent: 3271591 (1966-09-01), Ovshinsky
patent: 3622319 (1971-11-01), Sharp
patent: 3743847 (1973-07-01), Boland
patent: 3753110 (1973-08-01), Ikeda et al.
patent: 3961314 (1976-06-01), Klose et al.
patent: 3966317 (1976-06-01), Wacks et al.
patent: 3983542 (1976-09-01), Ovshinsky
patent: 3988720 (1976-10-01), Ovshinsky
patent: 4115872 (1978-09-01), Bluhm
patent: 4177474 (1979-12-01), Ovshinsky
patent: 4203123 (1980-05-01), Shanks
patent: 4267261 (1981-05-01), Hallman et al.
patent: 4269935 (1981-05-01), Masters et al.
patent: 4276368 (1981-06-01), Heller et al.
patent: 4312938 (1982-01-01), Drexler et al.
patent: 4316946 (1982-02-01), Masters et al.
patent: 4320191 (1982-03-01), Yoshikawa et al.
patent: 4405710 (1983-09-01), Balasubramanyam et al.
patent: 4419421 (1983-12-01), Wichelhaus et al.
patent: 4499557 (1985-02-01), Holmberg et al.
patent: 4597162 (1986-07-01), Johnson et al.
patent: 4608296 (1986-08-01), Keem et al.
patent: 4637895 (1987-01-01), Ovshinsky et al.
patent: 4646266 (1987-02-01), Ovshinsky et al.
patent: 4664939 (1987-05-01), Ovshinsky
patent: 4668968 (1987-05-01), Ovshinsky et al.
patent: 4670763 (1987-06-01), Ovshinsky et al.
patent: 4671618 (1987-06-01), Wu et al.
patent: 4673957 (1987-06-01), Ovshinsky et al.
patent: 4678679 (1987-07-01), Ovshinsky
patent: 4696758 (1987-09-01), Ovshinsky et al.
patent: 4698234 (1987-10-01), Ovshinsky et al.
patent: 4710899 (1987-12-01), Young et al.
patent: 4728406 (1988-03-01), Banerjee et al.
patent: 4737379 (1988-04-01), Hudgens et al.
patent: 4766471 (1988-08-01), Ovshinsky et al.
patent: 4769338 (1988-09-01), Ovshinsky et al.
patent: 4775425 (1988-10-01), Guha et al.
patent: 4788594 (1988-11-01), Ovshinsky et al.
patent: 4795657 (1989-01-01), Formigoni et al.
patent: 4800526 (1989-01-01), Lewis
patent: 4809044 (1989-02-01), Pryor et al.
patent: 4818717 (1989-04-01), Johnson et al.
patent: 4843443 (1989-06-01), Ovshinsky et al.
patent: 4845533 (1989-07-01), Pryor et al.
patent: 4847674 (1989-07-01), Silwa et al.
patent: 4853785 (1989-08-01), Ovshinsky et al.
patent: 4891330 (1990-01-01), Guha et al.
patent: 5128099 (1992-07-01), Strand et al.
patent: 5159661 (1992-10-01), Ovshinsky et al.
patent: 5166758 (1992-11-01), Ovshinsky et al.
patent: 5177567 (1993-01-01), Klersy et al.
patent: 5219788 (1993-06-01), Abernathey et al.
patent: 5238862 (1993-08-01), Blalock et al.
patent: 5272359 (1993-12-01), Nagasubramanian et al.
patent: 5296716 (1994-03-01), Ovshinsky et al.
patent: 5314772 (1994-05-01), Kozicki
patent: 5315131 (1994-05-01), Kishimoto et al.
patent: 5335219 (1994-08-01), Ovshinsky et al.
patent: 5341328 (1994-08-01), Ovshinsky et al.
patent: 5350484 (1994-09-01), Gardner et al.
patent: 5359205 (1994-10-01), Ovshinsky
patent: 5360981 (1994-11-01), Owen et al.
patent: 5363329 (1994-11-01), Troyan
patent: 5406509 (1995-04-01), Ovshinsky et al.
patent: 5414271 (1995-05-01), Ovshinsky et al.
patent: 5418640 (1995-05-01), Hood
patent: 5500532 (1996-03-01), Kozicki et al.
patent: 5512328 (1996-04-01), Yoshimura et al.
patent: 5512773 (1996-04-01), Wolf et al.
patent: 5534711 (1996-07-01), Ovshinsky et al.
patent: 5534712 (1996-07-01), Ovshinsky et al.
patent: 5536947 (1996-07-01), Klersy et al.
patent: 5543737 (1996-08-01), Ovshinsky
patent: 5591501 (1997-01-01), Ovshinsky et al.
patent: 5596522 (1997-01-01), Ovshinsky et al.
patent: 5687112 (1997-11-01), Ovshinsky
patent: 5694054 (1997-12-01), Ovshinsky et al.
patent: 5714768 (1998-02-01), Ovshinsky et al.
patent: 5726083 (1998-03-01), Takaishi
patent: 5751012 (1998-05-01), Wolstenholme et al.
patent: 5761115 (1998-06-01), Kozicki et al.
patent: 5789277 (1998-08-01), Zahorik et al.
patent: 5814527 (1998-09-01), Wolstenholme et al.
patent: 5818749 (1998-10-01), Harshfield
patent: 5825046 (1998-10-01), Czubatyj et al.
patent: 5841150 (1998-11-01), Gonzalez et al.
patent: 5846889 (1998-12-01), Harbison et al.
patent: 5851882 (1998-12-01), Harshfield
patent: 5869843 (1999-02-01), Harshfield
patent: 5896312 (1999-04-01), Kozicki et al.
patent: 5912839 (1999-06-01), Ovshinsky et al.
patent: 5914893 (1999-06-01), Kozicki et al.
patent: 5920788 (1999-07-01), Reinberg
patent: 5933365 (1999-08-01), Klersy et al.
patent: 5952671 (1999-09-01), Reinberg
patent: 5998066 (1999-12-01), Block et al.
patent: 6011757 (2000-01-01), Ovshinsky
patent: 6031287 (2000-02-01), Harshfield
patent: 6072716 (2000-06-01), Jacobson et al.
patent: 6077729 (2000-06-01), Harshfield
patent: 6084796 (2000-07-01), Kozicki et al.
patent: 6087674 (2000-07-01), Ovshinsky et al.
patent: 6117720 (2000-09-01), Harshfield
patent: 6141241 (2000-10-01), Ovshinsky et al.
patent: 6143604 (2000-11-01), Chiang et al.
patent: 6177338 (2001-01-01), Liaw et al.
patent: 6236059 (2001-05-01), Wolsteinholme et al.
patent: RE37259 (2001-07-01), Ovshinsky
patent: 6297170 (2001-10-01), Gabriel et al.
patent: 6300684 (2001-10-01), Gonzalez et al.
patent: 6316784 (2001-11-01), Zahorik et al.
patent: 6329606 (2001-12-01), Freyman et al.
patent: 6339544 (2002-01-01), Chiang et al.
patent: 6339582 (2002-01-01), Ichihara et al.
patent: 6348365 (2002-02-01), Moore et al.
patent: 6350679 (2002-02-01), McDaniel et al.
patent: 6376284 (2002-04-01), Gonzalez et al.
patent: 6388324 (2002-05-01), Kozicki et al.
patent: 6391688 (2002-05-01), Gonzalez et al.
patent: 6404665 (2002-06-01), Lowery et al.
patent: 6414376 (2002-07-01), Thakur et al.
patent: 6418049 (2002-07-01), Kozicki et al.
patent: 6420725 (2002-07-01), Harshfield
patent: 6423628 (2002-07-01), Li et al.
patent: 6429064 (2002-08-01), Wicker
patent: 6437383 (2002-08-01), Xu
patent: 6440837 (2002-08-01), Harshfield
patent: 6462984 (2002-10-01), Xu et al.
patent: 6469364 (2002-10-01), Kozicki
patent: 6473332 (2002-10-01), Ignatiev et al.
patent: 6480438 (2002-11-01), Park
patent: 6487106 (2002-11-01), Kozicki
patent: 6487113 (2002-11-01), Park et al.
patent: 6501111 (2002-12-01), Lowery
patent: 6507061 (2003-01-01), Hudgens et al.
patent: 6511862 (2003-01-01), Hudgens et al.
patent: 6511867 (2003-01-01), Lowery et al.
patent: 6512241 (2003-01-01), Lai
patent: 6514805 (2003-02-01), Xu et al.
patent: 6531373 (2003-03-01), Gill et al.
patent: 6534781 (2003-03-01), Dennison
patent: 6545287 (2003-04-01), Chiang
patent: 6545907 (2003-04-01), Lowery et al.
patent: 6555860 (2003-04-01), Lowery et al.
patent: 6563164 (2003-05-01), Lowery et al.
patent: 6566700 (2003-05-01), Xu
patent: 6567293 (2003-05-01), Lowery et al.
patent: 6569705 (2003-05-01), Chiang et al.
patent: 6570784 (2003-05-01), Lowery
patent: 6576921 (2003-06-01), Lowery
patent: 6586761 (2003-07-01), Lowery
patent: 6589714 (2003-07-01), Maimon et al.
patent: 6590807 (2003-07-01), Lowery
patent: 6593176 (2003-07-01), Dennison
patent: 6597009 (2003-07-01), Wicker
patent: 6605527 (2003-08-01), Dennison et al.
patent: 6613604 (2003-09-01), Maimon et al.
patent: 6621095 (2003-09-01), Chiang et al.
patent: 6625054 (2003-09-01), Lowery et al.
patent: 6638820 (2003-10-01), Moore
patent: 6642102 (2003-11-01), Xu
patent: 6646297 (2003-11-01), Dennison
patent: 6649928 (2003-11-01), Dennison
patent: 6667900 (2003-12-01), Lowery et al.
patent: 6671710 (2003-12-01), Ovshinsky et al.
patent: 6673648 (2004-01-01), Lowrey
patent: 6673700 (2004-01-01), Dennison et al.
patent: 6674115 (2004-01-01), Hudgens et al.
patent: 6687153 (2004-02-01), Lowery
patent: 6687427 (2004-02-01), Ramalingam et al.
patent: 6690026 (2004-02-01), Peterson
patent: 6696355 (2004-02-01), Dennison
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