Short distance uniformity and BlackMURA measurements

The increasing display sizes and changing form factors of displays, including automotive displays, lead to impractical measurement distances for lateral uniformity measurements. This contribution suggests and exemplarily applies two alternative and combinable methods to allow lateral uniformity meas...

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Bibliographic Details
Published in:Journal of the Society for Information Display 2021-05, Vol.29 (5), p.370-381
Main Authors: Rotscholl, Ingo, Krüger, Udo
Format: Article
Language:English
Subjects:
BlackMURA measurement
Display devices
display metrology
Distance measurement
Form factors
ILMD
imaging luminance measurement device
uniformity measurements
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Summary:The increasing display sizes and changing form factors of displays, including automotive displays, lead to impractical measurement distances for lateral uniformity measurements. This contribution suggests and exemplarily applies two alternative and combinable methods to allow lateral uniformity measurements at low distances and describes an adjusted BlackMURA compliant validation procedure. The proposed methods are validated with a high‐quality display device and are compared to results using the standard long‐distance measurement procedure. Increasing display sizes and changing form factors of displays, including automotive displays, lead to increasingly longer measurement distances required for lateral luminance uniformity and BlackMURA measurements. This contribution proposes and exemplifies two alternative and combinable methods to allow these measurements at shorter distances. The proposed methods are discussed, validated, and compared with the results of a classical long‐distance measurement. ​
ISSN:1071-0922
1938-3657
DOI:10.1002/jsid.1023