Patent · US Active

Semiconductor device having overlay pattern

US10747123B2 · kind B2 · utility

2Cited by
6References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 20, 2018
Grant dateAug 18, 2020
Priority date
Expiry dateNov 20, 2038

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01L2223/54426
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A semiconductor device includes a semiconductor substrate including an in-cell area and a scribe lane defining the in-cell area, a first overlay pattern on the semiconductor substrate, and a second overlay pattern adjacent to the first overlay pattern, wherein the first overlay pattern is a diffraction-based overlay (DBO) pattern and the second overlay pattern is a scanning electron microscope (SEM) overlay pattern.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.