7. OLED Lighting

  1. Takatoshi Tsujimura

Published Online: 2 APR 2012

DOI: 10.1002/9781118173053.ch7

OLED Displays: Fundamentals and Applications

OLED Displays: Fundamentals and Applications

How to Cite

Tsujimura, T. (2012) OLED Lighting, in OLED Displays: Fundamentals and Applications, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118173053.ch7

Publication History

  1. Published Online: 2 APR 2012
  2. Published Print: 22 JUN 2012

Book Series:

  1. Wiley-SID Series in Display Technology

Book Series Editors:

  1. Anthony C. Lowe

ISBN Information

Print ISBN: 9781118140512

Online ISBN: 9781118173053

SEARCH

Keywords:

  • color rendering index (CRI);
  • correlated color temperature (CCT);
  • ENERGY STAR;
  • microlens;
  • organic light-emitting diode (OLED);
  • Planckian locus

Summary

The white-emission OLED device used for displays is very similar to the organic light-emitting diode (OLED) lighting device, so the display techniques are mostly applicable in lighting applications. In particular, the light source must provide adequate color reproduction of the irradiated object. This metric is called the color rendering index (CRI). This chapter discuss the specifications outlined in the ENERGY STAR program Requirements for Solid State Lighting Luminaires Eligibility Criteria, version 1.1. To express the color of near-white color emission not on the Planckian locus, the correlated color temperature (CCT) is used, defi ned as the color temperature of the color coordinate on the Planckian locus, which is closest to the emissive color. Instead, a microlens array with small diameter such as 10 µ m is used. The pixel size in an active-matrix display ranges within the hundreds of micrometers, so any voltage drop occurring in a pixel is trivial.

Controlled Vocabulary Terms

active matrix liquid crystal displays; lenses; organic light emitting diodes