ASTM F1844 - 97(2016) - Standard Practice for Measuring Sheet Resistance of Thin Film Conductors For Flat Panel Display Manufacturing Using a Noncontact Eddy Current Gage

ASTM F1844 - 97(2016)

Standard Practice for Measuring Sheet Resistance of Thin Film Conductors For Flat Panel Display Manufacturing Using a Noncontact Eddy Current Gage

Status : Current   Published : May 2016

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1.1 This practice describes methods for measuring the sheet electrical resistance of sputtered thin conductive films deposited on large insulating substrates (glass or plastic), used in making flat panel information displays.

1.2 This practice is intended to be used with Test Methods F673. This practice pertains to a “manual” measurement procedure in which an operator positions the measuring head on the test specimen and then personally activates the test apparatus. The resulting test data may be tabulated by the operator, or, alternatively, sent to a computer-based data logging system. Both Methods I and II of Test Methods F673 (paragraphs 3.1 through 3.3.3 of Test Methods F673) are applicable to this practice.

1.3 Sheet resistivity in the range 0.020 to 3000 Ω per square (sheet conductance in the range 3 by 10 –4 to 50 mhos per square) may be measured by this practice. The sheet resistance is assumed to be uniform in the area being probed.

Note 1:  Typical manual test units, as described in this practice, measure and report in the units “mhos per square”; this is the inverse of “ohms per square.”

1.4 This practice is applicable to flat surfaces only.

1.5 This practice is non-destructive. It may be used on production panels to help assure production uniformity.

1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.7  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.




Standard NumberASTM F1844 - 97(2016)
TitleStandard Practice for Measuring Sheet Resistance of Thin Film Conductors For Flat Panel Display Manufacturing Using a Noncontact Eddy Current Gage
StatusCurrent
Publication Date01 May 2016
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Conductance, Electrical conductance, Electrical resistance, Electrical sheet conductance, Electrical sheet resistance, Flat panel displays, Noncontact eddy current, Resistance, Sputtered thin films, Thin conductive films on glass, Thin film
ICS31.120
PublisherASTM
FormatA4
DeliveryYes
Pages5
File Size119 KB
Price£40.00


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