Invention Grant
US5959321A DRAM matrix of basic organizational units each with pair of capacitors
with hexagon shaped planar portion
失效
基本组织单元的DRAM矩阵,每个具有六边形平面部分的一对电容器
- Patent Title: DRAM matrix of basic organizational units each with pair of capacitors with hexagon shaped planar portion
- Patent Title (中): 基本组织单元的DRAM矩阵,每个具有六边形平面部分的一对电容器
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Application No.: US901876Application Date: 1997-07-29
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Publication No.: US5959321APublication Date: 1999-09-28
- Inventor: Chang Jae Lee , Won Suck Yang , Kong Hee Park
- Applicant: Chang Jae Lee , Won Suck Yang , Kong Hee Park
- Assignee: LG Semicon, Ltd.
- Current Assignee: LG Semicon, Ltd.
- Priority: KRX96-31664 19960731
- Main IPC: G11C11/34
- IPC: G11C11/34 ; H01L21/8242 ; H01L27/108 ; H01L29/76 ; H01L29/94 ; H01L31/119
Abstract:
A dynamic random access memory (DRAM) organized as a matrix of basic organizational units each having a capacitor pair. Each capacitor pair has one of the first capacitors and one of the second capacitors in it. Each basic organizational unit is arranged as follows: a first word line and a second word line are formed, as parallel lines, on the substrate; the first word line lies between a first doped region and a second doped region to define a first transistor; the second word line lies between the second doped region of the first transistor and a third doped regions to define a second transistor; a bit line lies on the second doped region of the substrate at an oblique angle to the first word line and second word line; the first capacitor overlies the first doped region and the first word line, is substantially centered over the first doped region, is connected to the first doped region via a first contact hole, and has a hexagon-shaped planar portion; the second capacitor overlies the third doped region and the second word line, is substantially centered over the third doped region, is connected to the third doped region via a second contact hole, and has a hexagon-shaped planar portion; and a center point of each of the first doped region, second doped region and third doped region of the basic organizational unit are connectable by an imaginary straight characteristic line.
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