Fishing – trapping – and vermin destroying
Patent
1994-08-30
1995-06-20
Thomas, Tom
Fishing, trapping, and vermin destroying
437 46, 437 48, 437915, H01L 21824.6
Patent
active
054260663
ABSTRACT:
A late programming mask ROM integrated circuit and a process for producing the same. The mask ROM integrated circuit has a silicon substrate, and a plurality of memory cells formed on the silicon substrate. Each memory cell consists of a transistor element and a diode element electrically connected in series. Each transistor element has a drain layer, a channel layer, a source layer all stacked on the silicon substrate in a substantially vertical direction to form an upright drain/channel/source structure region, and a gate electrode region formed on the silicon substrate. The gate electrode regions and the upright drain/channel/source structure regions of the transistor elements are alternately arranged in an adjacent fashion along a substantially horizontal direction. Each diode element is formed by one upright drain/channel/source structure and a diode layer formed on or under the upright drain/channel/source structure.
REFERENCES:
patent: 5096845 (1992-03-01), Inoue
patent: 5208172 (1993-05-01), Fitch et al.
patent: 5250457 (1993-10-01), Dennison
patent: 5308778 (1994-05-01), Fitch et al.
patent: 5330924 (1994-07-01), Huang et al.
patent: 5358887 (1994-10-01), Hong
Fu Chien-Chih
Lee Fong-Chun
Pao Shiao-Fen
Wang Nan-Chueh
Thomas Tom
United Microelectronics Corp.
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