ITO Electrodes: Thickness 50-300 nm

Q: What is the primary function of ITO electrodes in LCD panels?

ITO electrodes provide transparent conductive paths that control liquid crystal alignment for display functionality and enable touch-sensitive capabilities in modern LCD panels.

Q: Why is indium tin oxide used for these electrodes?

ITO offers an optimal balance of electrical conductivity (10-1000 Ω/sq) and optical transparency (>85%), making it ideal for display applications where both properties are essential.

Component Specifications

Definition

Indium Tin Oxide (ITO) electrodes are thin-film transparent conductive components applied to glass or plastic substrates in LCD panels. They serve as the electrical interface for controlling liquid crystal alignment and enabling touch-sensitive capabilities through their conductive yet optically transparent properties.

Working Principle

ITO electrodes function by providing a conductive path for electrical signals while maintaining optical transparency. When voltage is applied across the electrodes, they create an electric field that aligns liquid crystal molecules, controlling light transmission. In touch applications, they detect capacitance changes from finger contact.

Materials

Indium Tin Oxide (typically 90% In₂O₃, 10% SnO₂ by weight), deposited as thin films (50-300 nm) on glass or PET substrates via sputtering or evaporation processes.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Thickness	50-300 nm
Transmittance	>85% at 550 nm wavelength
Sheet Resistance	10-1000 Ω/sq
Adhesion Strength	>5B per ASTM D3359
Surface Roughness	<2 nm RMS

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, ISO 14001, IEC 62341, JIS C 0010

Parent Products

This component is used in the following industrial products

LCD Panel

An LCD panel is a flat-panel component that serves as the fundamental image-producing element within display screen assemblies.

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Engineering Analysis

Risks & Mitigation

Material scarcity (indium supply)
Brittleness leading to cracking
Degradation from moisture exposure
High-temperature sensitivity during manufacturing

FMEA Triads

Trigger: Poor adhesion to substrate
Failure: Electrode delamination and loss of conductivity
Mitigation: Implement proper surface pretreatment and adhesion promotion layers

Trigger: Excessive film stress
Failure: Cracking during thermal cycling or bending
Mitigation: Optimize deposition parameters and consider stress-relief layers

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5% for sheet resistance, ±10 nm for thickness uniformity

Test Method

Four-point probe measurement for conductivity, spectrophotometry for transparency, cross-hatch adhesion test per ASTM D3359

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Inspection readiness

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Supplier transparency

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Manufacturers of ITO Electrodes

Manufacturer profiles associated with ITO Electrodes.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of ITO electrodes in LCD panels?