Transparent Conductive ITO PET Film

PET Film Supply Company is a manufacturer of Transparent Conductive ITO PET Film for touch sensors, transparent heaters, EMI/RFI shielding windows, display electrodes, and flexible electronic assemblies. The product uses a clear PET base with a vacuum-sputtered indium tin oxide layer that provides controlled conductivity while preserving visibility. Grades are selected by ITO sheet resistance, light transmittance, haze, coating uniformity, circuit design, and the planned patterning or bonding process.

Product Photos

Product Overview

Transparent Conductive ITO PET Film is engineered as a lightweight transparent electrode. The PET base supports slitting, sheeting, OCA lamination, printing, and sensor assembly, while the ITO coating carries current across the active area.

Common grade options include 10, 60, 100, 200, and 300 ohm/sq on 125, 175, or 200 um PET. Lower resistance can support greater current flow, but the selected value must also suit the electrode pattern, contact layout, viewing requirement, and final assembly. Visible light transmittance for common grades is generally above 80%, depending on PET thickness, ITO level, test method, and any protection layer.

Approval should use several readings across the roll width and machine direction. One center reading may miss local high-resistance areas that affect touch response, heater balance, or shielding continuity.

Benefits

Defined ITO sheet-resistance grades for transparent-electrode designs.
Clear optical appearance with grade-specific transmittance and haze.
Vacuum-sputtered conductive layer checked for coverage and adhesion.
Suitable for wet etching, laser patterning, silver ink, and busbar printing after trials.
Compatible with OCA lamination after sample validation.
Conductive-side identification and agreed winding direction.
Roll, sheet, slit-width, and converted-part options.

Which Performance Combination Should Be Specified for Touch Sensors, Transparent Heaters, and EMI/RFI Shielding?

No single ITO grade fits every application. Touch sensors need uniform conductivity, controlled electrode visibility, and stable readings after patterning and bonding. Narrow tracks and busbar contacts should be checked on the finished design.

Transparent heaters require resistance matched to voltage, active area, electrode spacing, and heat distribution. EMI/RFI shielding also depends on grounding, edge contact, frequency range, and the completed window structure. Selection should therefore follow the actual component layout.

TDS / Technical Data Sheet

Item	Typical Value
Base Film	Optical-grade clear PET
Conductive Coating	Single-side indium tin oxide, vacuum sputtered
PET Film Thickness	125 / 175 / 200 um
ITO Sheet Resistance	10 / 60 / 100 / 200 / 300 ohm/sq
Resistance Tolerance	Defined by approved grade and batch report
Resistance Uniformity	Multi-point inspection across width and machine direction
Measurement Method	Four-point probe or agreed non-contact method
Visible Light Transmittance	Common grades generally above 80%, test-structure dependent
Haze	Grade-specific value confirmed by test report
ITO Layer Thickness	Matched to the specified sheet-resistance grade
Conductive Side	Identified by label, meter check, or edge marking
Surface Quality	Checked for scratches, pinholes, spots, and local high resistance
Patterning Compatibility	Wet etching, laser patterning, or printed busbar, subject to trial
Protective Film	Optional, subject to handling requirements
Roll Width	Slit to an agreed width within parent-roll capability
Core and Winding	Core size and winding direction confirmed before production
Supply Format	Roll, sheet, slit roll, or converted part
Bend Validation	Checked at the actual bend radius and circuit width
Optical Test Reference	ASTM D1003 or agreed equivalent
EMI Test Reference	Assembly-specific method or ASTM D4935 where applicable

Packing and Loading

What Should Be Verified Before ITO PET Film Is Patterned, Slit, or Bent?

Before conversion, confirm the conductive side, winding direction, protection-film arrangement, resistance profile, and permitted visual defects. Test the selected ITO coated PET film with the intended etchant, laser settings, silver ink, OCA, cleaning process, and terminal connection.

Recheck narrow tracks, cut edges, patterned areas, and busbar contacts after processing. The PET base can flex, but the ITO layer is comparatively brittle. Tight bends, repeated flexing, sharp creases, and narrow lines may create microcracks or raise resistance. Approval should use the actual circuit width, bend direction, bend radius, laminate stack, and expected flex cycles.

Applications

Capacitive and resistive touch-sensor electrodes.
Transparent heaters for optical windows, camera covers, and defogging areas.
EMI/RFI shielding windows with defined grounding and edge contact.
Patterned electrodes for displays, sensors, and flexible electronic assemblies.
Prototype or production parts supplied as rolls, sheets, or converted pieces.

FAQ

Can the ITO surface be wet-etched or laser patterned?

Both methods may be suitable. Confirm the etchant or laser settings, line width, cleaning process, and resistance after patterning.

How is the conductive side identified?

It can be checked with a resistance meter and marked by label, winding instruction, or agreed edge identification.

Can the film be used directly for transparent heaters?

It provides the transparent electrode. Voltage, active area, busbar design, power density, and heating uniformity require finished-heater validation.

What should be confirmed before repeat production?

Confirm PET thickness, sheet-resistance grade, optical results, slit width, winding direction, protection film, retained sample, and post-processing electrical data.