Data cell region and system region for a semiconductor memory

Active solid-state devices (e.g. – transistors – solid-state diode – Gate arrays – With particular signal path connections

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C257S209000, C257S211000, C257S910000

Reexamination Certificate

active

06384435

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention includes memory and an information apparatus which may be applied, for example, to a read only memory, random access memory, or to an apparatus utilizing these memories. The present invention also includes a memory which may increase its capacity with a simplified process. Moreover, the invention includes an information apparatus utilizing this memory by generating data cell region with the process other than that used to generate the system region to control data cells.
2. Description of the Related Art
Memory may be thought of as any device that can hold data in a machine-readable format. Moreover, a semiconductor may be viewed as material, typically crystalline, which allows current to flow under certain circumstances and may be used to create various integrated circuits. Most memory devices used in the computer industry are built from semiconductor integrated circuits.
In a conventional semiconductor memory such as represented by a dynamic random access memory (DRAM), etc., data cells may be formed by a charge accumulation mechanism and are arranged in the shape of a matrix. Access is made to these data cells from a system region. Thereby, data may be written by accumulating charges to the desired data cells corresponding to a cell address. Data is read out by detecting the accumulated charges held in these data cells.
A conventional semiconductor memory is produced through an ultra-fine manufacturing process by forming, on a semiconductor substrate, the data cell regions formed by both the data cells and system regions to control operation of the data cell regions. Such a semiconductor memory has the merits that reliability is high and access time and data transfer time is very short as compared to a magnetic tape represented by a videotape recorder and a disk memory represented by a compact disk.
However, the conventional semiconductor memory requires large-scale facilities such as clean room and stepper, etc., for the ultra-fine manufacturing process. Particularly, when memory capacity is increased by modifying a design rule, such memory capacity is accompanied by a disadvantage in that, to account for modifying a design rule, the facilities for such ultra-fine manufacturing also must be updated or newly constructed, and unit price per bit increases, although the integration rate is as much increased.
SUMMARY OF THE INVENTION
In view of overcoming such disadvantage, the present invention produces the data cell region and system region with different manufacturing processes.
When the data cell region and system region are manufactured with the processes of the invention, the data cell region and system region may be manufactured with the most applicable manufacturing processes and thereby a large capacity memory may be generated with a more simplified overall process.


REFERENCES:
patent: 5640343 (1997-06-01), Gallagher et al.
patent: 5656548 (1997-08-01), Zavracky et al.
patent: 5781031 (1998-07-01), Bertin et al.
patent: 5793115 (1998-08-01), Zavracky et al.
patent: 5915167 (1999-06-01), Leedy

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Data cell region and system region for a semiconductor memory does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data cell region and system region for a semiconductor memory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data cell region and system region for a semiconductor memory will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2853948

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.