Apple iPhone X – MEMS Microphones Complete Teardown Report

  • ID: 4576856
  • Report
  • Region: Global
  • 215 Pages
  • System Plus Consulting
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For microphone integration in the iPhone X, Apple has chosen the market’s top three microphone suppliers: Goertek, Knowles, and AAC Technologies.

The Apple iPhone X has four MEMS microphones: a front-facing top microphone, two front-facing bottom microphones, and a rear-facing top microphone. This layout is similar to previous iPhones, but the front-facing bottom-right microphone is now integrated in the speaker module. All four microphones share the same Apple-specific package dimensions, but with a different internal structure (number of substrate metal layers, embedded capacitance, ASIC, etc.).

In the iPhone X, we’ve observed changes to  the microphones provided by Apple’s three suppliers:

Goertek, which still relies on Infineon for die manufacturing, integrates Infineon’s technology with a double backplate, delivering a differential MEMS microphone. For the ASIC, Goertek has considerably reduced the die area by around 40% compared to the previous die.

Knowles uses the same technologies as before, but one part has a new MEMS design and another part has an existing MEMS design.

AAC uses the same MEMS microphone die as Goertek, but with a different ASIC.

Infineon is a big winner. By providing ASIC and MEMS dies to all of Goertek’s and AAC Technologies’ products, it now possesses a large share of the MEMS microphone market.

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Overview/Introduction

Company Profile and Supply Chain

iPhone X – Teardown

Goertek/Knowles/AAC Technologies

Physical Analysis

  • Package
    • Package view and dimensions
    • Package opening
    • Package cross-section
  • ASIC Die
    • View, dimensions and marking
    • Dicing
    • Delayering and process
    • Cross-section
  • MEMS Die
    • View, dimensions and marking
    • Dicing
    • Membrane and backplate
    • Anti-stiction bumps
    • Cavity
    • Cross-section

Manufacturing Process Flow

  • ASIC Front-end Process
  • ASIC Wafer Fabrication Unit
  • MEMS Process Flow
  • MEMS Wafer Fabrication Unit
  • Packaging Process Flow
  • Package Assembly Unit

Physical Analysis Comparison

Goertek/Knowles/AAC Technologies – Cost Analysis

  • Cost Analysis Overview
  • Yield Hypotheses
  • ASIC Front-end Cost
  • ASIC Wafer and Die Cost
  • MEMS Front-end Cost
  • MEMS Wafer and Die Cost
  • Back-end: Packaging Cost
  • Microphone Component Cost

Goertek/Knowles/AAC Technologies – Estimated Sales Price

Manufacturing Cost Comparison

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  • Apple
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