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Samsung patents chip design with recessed areas to improve cutting yield

Patent drawing
Patent drawing from the official filing.

Samsung describes a semiconductor structure where the insulating layers between chips have a specific recessed shape. This design uses materials with different electrical properties to protect the chip edges during the cutting process.

Why it mattersThis is a manufacturing technique that helps factories produce more usable chips from a single wafer, reducing waste in chip production.

In the filing’s own words

An integrated circuit device includes a semiconductor substrate having a first device region, a second device region, and a scribe line region therein. The scribe line region, which extends between the first and second device regions, includes a first edge region adjacent the first device region, a second edge region adjacent the second device region and a cutting region extending between the first and second device regions. A lower interlayer insulating layer is provided on the first and second device regions and on the scribe line region. A first multi-level guard ring is provided, which at least partially surrounds the first device region, when viewed from a plan perspective. An insulating structure is provided, which has a recess therein. The recess extends adjacent the first multi-level guard rings and exposes an upper surface of the lower interlayer insulating layer.

What exactly they claim (claim 1)

1. An integrated circuit device, comprising: a semiconductor substrate including a first device region, a second device region, and a scribe line region extending between the first and second device regions, said scribe line region comprising a first edge region adjacent the first device region, a second edge region adjacent the second device region and a cutting region extending between the first and second device regions; a lower interlayer insulating layer on the first and second device regions and on the scribe line region; a first multi-level guard ring at least partially surrounding the first device region, when viewed from a plan perspective; a second multi-level guard ring at least partially surrounding the second device region, when viewed from the plan perspective; and an insulating structure including a lower insulating structure on the first and second device regions, and an upper insulating structure on the lower insulating structure, the lower insulating structure including lower insulating layers stacked on the lower interlayer insulating layer and having a recess therein, which extends between the first and second multi-level guard rings and exposes an upper surface of the lower interlayer insulating layer, wherein the recess exposing the upper surface of the lower interlayer insulating layer surrounds, in a plan view, the first device region, wherein the lower interlayer insulating layer comprises a first material having a first dielectric constant; wherein the lower insulating structure of the insulating structure comprises a second material different than the first material, the second material having a second dielectric constant lower than the first dielectric constant; and wherein a first portion of the first multi-level guard ring extends lower than the recess within the lower interlayer insulating layer, and a second portion of the first multi-level guard ring extends within the insulating structure.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
Multi-chip integrated circuit devices having recessed regions therein that support high yield dicing
Patent number
US12765383B2
Application number
18067839
Filed
Dec 19, 2022
Granted
Oct 13, 2026
Inventors
3
Claims
20

Classified under

H10W 42/121 Electricity & electronicsH10P 54/00 Electricity & electronicsH10W 42/00 Electricity & electronicsH10W 72/30 Electricity & electronicsH10W 72/50 Electricity & electronicsH10W 72/851 Electricity & electronics

More from Samsung in Chips & hardware

Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.