Why Is My ITO Glass Resistance Different from Its Ω/□ Value?

Why Is My ITO Glass Resistance Different from Its Ω/□ Value?

Why Is My ITO Glass Resistance Different from Its Ω/□ Value?

ITO Conductive Glass · Customer FAQ

Why Is My ITO Glass Resistance Different from Its Ω/□ Value?

Only under the ideal one-square geometry with the stated contact assumptions and negligible additional resistance. Other shapes, electrode spacing and contacts can produce different terminal resistance.

What to Check or Provide

  • Check whether the reading is sheet resistance or terminal resistance.
  • Identify electrode spacing, width and probe positions.
  • Repeat the measurement at the agreed temperature and contact arrangement before concluding the film is defective.

Related Questions

What does ohms per square mean?

Sheet resistance, expressed in Ω/□, describes lateral conduction in a thin film. For an ideal uniform rectangle with full-width opposing contacts, resistance is R = RₛL/W. The length-to-width ratio determines the number of squares.

What tolerance should I request?

Use a tolerance justified by the function and reviewed for feasibility. Define the measurement temperature, locations and whether limits apply at every point or to an average. Specify a uniformity formula if uniformity is an acceptance criterion.

Get a Project-Specific Answer

Send your drawing, application conditions and quantities with the details above. Felix Glass can review the requirements and confirm the proposed supply and inspection scope in the quotation.

Dongguan Felix Glass Co., Ltd.
Email: james@felixglass.com
Phone: +86-18565032888

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