Electric fuse structure

A technology of electric fuse and fuse, which is applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problem that the sensor cannot correctly judge the storage state, and achieve the effect of saving area, increasing stability, and reducing area

Inactive Publication Date: 2022-05-10
晶芯成(北京)科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (4) For the traditional Polyfuse storage unit, due to the extremely harsh use environment of the Polyfuse during the data retention period after the fuse is blown, the fuse link that has been blown will be reconnected together, and the resistance will decrease, which will cause the sensor to fail to correctly judge the storage state

Method used

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Embodiment Construction

[0037] In order to make the purpose, advantages and features of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in very simplified form and not drawn to scale, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In addition, the structures shown in the drawings are often a part of the actual structures. In particular, each drawing needs to display different emphases, and sometimes uses different scales.

[0038] As used in the present invention, the singular forms "a", "an" and "the" include plural objects, the term "or" is usually used in the sense of including "and / or", and the term "several" Usually, the term "at least one" is used in the meaning of "at least one", and the term "at least two" is usually used in the meaning of "two or more". In ...

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Abstract

The invention provides an electric fuse structure which comprises a substrate, an insulating layer located on the surface of the substrate and an electric fuse located on the surface of the insulating layer, and the electric fuse comprises a first electrode, a second electrode and a plurality of connecting fuses connected with the first electrode and the second electrode. The plurality of connecting fuses are connected in parallel between the first electrode and the second electrode, even if one or two connecting fuses are in a high-resistance state due to the reason of a manufacturing process, the plurality of connecting fuses are connected in parallel, so that the first electrode and the second electrode can still be kept in a good connection relationship; therefore, the stability of the electric fuse structure can be improved, and the situation that the electric fuse structure fails due to uneven manufacturing procedures is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to an electric fuse structure. Background technique [0002] Generally speaking, the program memory used by PMIC (Power Management IC, power management integrated circuit), LCD (LiquidCrystal Display, liquid crystal display) display and CMOS (Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor) image sensor is polyfuse (polysilicon Fuse) memory, usually provides redundant functions for integrated circuits to increase the yield of chips, because polyfuse can be compatible with the logic process, does not require additional processes or masks, and is relatively low in cost. Usually, there are redundant memory cells (cells) on the memory chip. If the memory circuit is found to be defective, the polyfuse can be blown to activate the reserved memory cells. [0003] Polyfuse element (polysilicon fuse element) is usually composed of anode, cathode and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L23/525H01L27/112
CPCH01L23/5256H10B20/20
Inventor 胡燕燕冯玲张庆勇魏梦丽赵梦梦
Owner 晶芯成(北京)科技有限公司
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