Esd protection circuit including multi-finger transistor
AssigneeHynix Semiconductor Inc.
InventorHee-Jeong Son
Life of this patent
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Abstract
Provided is an electrostatic discharge (ESD) protection circuit including a multi-finger transistor. The multi-finger transistor includes a plurality of drains and a plurality of sources alternately arranged in parallel, and a plurality of gate electrodes arranged between the drains and the sources. The drains are electrically coupled to an input/output pad through a plurality of first finger patterns which are coupled to a plurality of first contact patterns. The sources are electrically coupled to a specific voltage line through a path which comprises a plurality of second finger patterns coupled to a plurality of second contact patterns. The number of the first contact patterns corresponding to the drains is gradually reduced as the distance to the voltage line becomes shorter.
Claims19
An electrostatic discharge (ESD) protection circuit, comprising:
- a multi-finger transistor comprising a plurality of drains and a plurality of sources alternately arranged in parallel, and a plurality of gate electrodes arranged between the drains and the sources,
- wherein the drains are electrically coupled to an input/output pad through a plurality of first finger patterns which are coupled to a plurality of first contact patterns,
- the sources are electrically coupled to a specific voltage line through a path which comprises a plurality of second finger patterns coupled to a plurality of second contact patterns, and
- the number of the first contact patterns corresponding to the drains is gradually reduced as the distance to the voltage line becomes shorter.
An electrostatic discharge (ESD) protection circuit, comprising:
- a multi-finger transistor comprising a plurality of drains and a plurality of sources alternately arranged in parallel, and a plurality of gate electrodes arranged between the drains and the sources,
- wherein the drains are electrically coupled to an input/output pad through a plurality of first finger patterns which are coupled to a plurality of first contact patterns,
- the sources are electrically coupled to a specific voltage line through a path which comprises a plurality of second finger patterns coupled to a plurality of second contact patterns, and
- the number of the second contact patterns is gradually reduced as the distance to the voltage line becomes shorter.
An electrostatic discharge (ESD) protection circuit, comprising:
- a multi-finger transistor comprising a plurality of drains and a plurality of sources alternately arranged in parallel, and a plurality of gate electrodes arranged between the drains and the sources,
- wherein the drains are electrically coupled to an input/output pad through a plurality of first finger patterns which are coupled to a plurality of first contact patterns,
- the sources are electrically coupled to a specific voltage line through a path which comprises a plurality of second finger patterns coupled to a plurality of second contact patterns, and
- the number of the first and second contact patterns corresponding to pairs of the adjacent drain and source is gradually reduced as the distance to the voltage line becomes shorter.
An electrostatic discharge (ESD) protection circuit, comprising:
- a multi-finger transistor comprising a plurality of drains and a plurality of sources alternately arranged in parallel, and a plurality of gate electrodes arranged between the drains and the sources,
- wherein the drains are electrically coupled to an input/output pad through a plurality of first finger patterns which are coupled to a plurality of first contact patterns,
- the sources are electrically coupled to a specific voltage line through a path which comprises a plurality of second finger patterns coupled to a plurality of second contact patterns, and
- the number of the first contact pattern or the number of the second contact pattern is gradually reduced as the distance to the voltage line becomes shorter.
Dependencies are inferred from the claim text.