SEMI D62 - Test Method for Measurement of LED Light Bar for Liquid Crystal Displays -

Abstract

1  Purpose
1.1  This Standard defines measurement methods and reporting requirements for various characteristics of light emitting diode (LED) light bar for liquid crystal displays (LCDs). This Standard will be helpful to unify methodologies measurement used for electro-optical and mechanical characteristics which can be used to improve the quality of integrated LED backlight units and track conformity to original design rules.
 

2  Scope
2.1  This Standard is a generic specification for electro-optical and mechanical measurement methods of LED light bar used for LCDs.
2.2  This Standard is intended to be generally useful for many common types of LED light bar designs.
2.3  This Standard is suitable for common types of LED light bars of the edge (or side) type backlight unit design.
2.4  This Standard is suitable for both side-view and top-view surface mount device (SMD) LEDs.
2.5  The Standard includes practical methodologies of flux, intensity, color, and geometric specification measurements. The measured optical characteristics are appropriate for the practical operational conditions using as an extended source, rather than a multi-point-source.

Referenced SEMI Standards (purchase separately)
SEMI D36 — Terminology for LCD Backlight Unit

Revision History
SEMI D62-0619 (Reapproved 1224)
SEMI D62-0619 (technical revision)
SEMI D62-0611 (first published)

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