Optical characterization of display screens by speckle-contrast measurements

Antonio M. Pozo; José J. Castro; Manuel Rubiño

doi:10.1117/12.977952

11 September 2012 Optical characterization of display screens by speckle-contrast measurements

Antonio M. Pozo, José J. Castro, Manuel Rubiño

Proceedings Volume 8413, Speckle 2012: V International Conference on Speckle Metrology; 841317 (2012) https://doi.org/10.1117/12.977952
Event: SPECKLE 2012: V International Conference on Speckle Metrology, 2012, Vigo, Spain

Abstract

In recent years, the flat-panel display (FPD) technology has undergone great development. Currently, FPDs are present in many devices. A significant element in FPD manufacturing is the display front surface. Manufacturers sell FPDs with different types of front surface which can be matte (also called anti-glare) or glossy screens. Users who prefer glossy screens consider images shown in these types of displays to have more vivid colours compared with matte-screen displays. However, external light sources may cause unpleasant reflections on the glossy screens. These reflections can be reduced by a matte treatment in the front surface of FPDs. In this work, we present a method to characterize the front surface of FPDs using laser speckle patterns. We characterized three FPDs: a Samsung XL2370 LCD monitor of 23" with matte screen, a Toshiba Satellite A100 laptop of 15.4" with glossy screen, and a Papyre electronic book reader. The results show great differences in speckle contrast values for the three screens characterized and, therefore, this work shows the feasibility of this method for characterizing and comparing FPDs which have different types of front surfaces.

Citation Download Citation

Antonio M. Pozo, José J. Castro, and Manuel Rubiño "Optical characterization of display screens by speckle-contrast measurements", Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 841317 (11 September 2012); https://doi.org/10.1117/12.977952

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KEYWORDS

Speckle pattern

Speckle

LCDs

Reflection

Manufacturing

Satellites

Cameras

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