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Optical Engineering

Optical characterization of display screens by speckle patterns
Author(s): Antonio M. Pozo; José J. Castro; Manuel Rubino
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Paper Abstract

In recent years, flat-panel display (FPD) technology has undergone great development, and now FPDs appear in many devices. A significant element in FPD manufacturing is the display front surface. Manufacturers sell FPDs with different types of front surfaces, which can be matte (also called anti-glare) or glossy screens. Users who prefer glossy screens consider these displays to show more vivid colors compared with matte-screen displays. However, on the glossy screens, external light sources may cause unpleasant reflections that can be reduced by a matte treatment in the front surface. In this work, we present a method to characterize FPD screens using laser-speckle patterns. We characterize three FPDs: a Samsung XL2370 LCD monitor of 23 in. with matte screen, a Toshiba Satellite A100 LCD laptop of 15.4 in. with glossy screen, and a Grammata Papyre 6.1 electronic book reader of 6 in. with ePaper screen (E-ink technology). 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 that have different types of front surfaces.

Paper Details

Date Published: 17 July 2013
PDF: 8 pages
Opt. Eng. 52(10) 101915 doi: 10.1117/1.OE.52.10.101915
Published in: Optical Engineering Volume 52, Issue 10
Show Author Affiliations
Antonio M. Pozo, Univ. de Granada (Spain)
José J. Castro, Univ. de Granada (Spain)
Manuel Rubino, Univ. de Granada (Spain)

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