Invention Grant
US5955757A Dram structure with multiple memory cells sharing the same bit-line
contact
失效
具有多个存储单元共享相同位线触点的Dram结构
- Patent Title: Dram structure with multiple memory cells sharing the same bit-line contact
- Patent Title (中): 具有多个存储单元共享相同位线触点的Dram结构
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Application No.: US54547Application Date: 1998-04-03
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Publication No.: US5955757APublication Date: 1999-09-21
- Inventor: Tean-Sen Jen , Shiou-Yu Wang , Jia-Shyong Cheng
- Applicant: Tean-Sen Jen , Shiou-Yu Wang , Jia-Shyong Cheng
- Applicant Address: TWX
- Assignee: Nan Ya Technology Corp.
- Current Assignee: Nan Ya Technology Corp.
- Current Assignee Address: TWX
- Priority: TWX86118053 19971201
- Main IPC: H01L27/108
- IPC: H01L27/108
Abstract:
The present invention discloses a DRAM structure with multiple memory cells sharing the same bit-line contact. The DRAM structure of the present invention comprises: a substrate; an active region formed on the substrate, with a center region and a plurality of protrusion regions connecting to the two sides of the center region; a plurality of word-lines, disconnected from each other, each crossing the corresponding protrusion region; a plurality of channel regions, formed where the protrusion region overlaps with the word-lines; a plurality of source regions, formed at the outer areas of the channel regions; a sharing drain region, formed at the center region of the active region; a bit-line contact, formed on surface of the sharing drain region; a bit-line, crossing the center region and electrically connected to the sharing drain region via the bit-line contact; a plurality of capacitors, electrically connected to the source regions; and a plurality of metal lines, electrically connected to the corresponding word-lines.
Information query
IPC分类: