Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Structure and characterization of a white up-emitting OLED on silicon for microdisplays

[+] Author Affiliations
Tom Feng, Tariq A. Ali, E. S. Ramakrishnan, Richard A. Campos, Webster E. Howard

eMagin Corp. (United States)

Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, 30 (February 2, 2001); doi:10.1117/12.416907
Text Size: A A A
From Conference Volume 4105

  • Organic Light-Emitting Materials and Devices IV
  • Zakya H. Kafafi
  • San Diego, CA, USA | July 30, 2000

abstract

We have developed highly efficient, top-emitting white OLED structures suitable for black-and-white or full color microdisplay applications. White light emission was obtained from both singly doped and doubly doped emitter layer structures. However, the double-dopant structure, employing fluorescent blue and red-emitting dyes, generated much higher luminous efficiency than that of the single dopant structure incorporating only the red dopant. For top- emitting, white OLED devices with the double-dopant structure, we have achieved luminous efficiencies of 974 cd/m2, 4.9 cd/A, 1.9 lm/W and an external quantum efficiency of 1.8% when driven at 20 mA/cm2 and 7.9 V. The device has an electroluminescence turn-on voltage of 2.2 V. After turn-on, the current varies as the 14th power of the voltage. The projected operational half-life of these devices is greater than 6000 hrs. This estimate is based on devices that have been continuously driven at a constant current of 20 mA/cm2 for more than 3000 hrs. Based on an up-emitting, double-dopant white OLED structure, we have developed an SXGA-resolution, black-and-white active matrix OLED (AMOLED) on silicon microdisplay. This AMOLED-on-Si has demonstrated real-time video with 256 gray levels and consumes less than 400 mW of power at a brightness of 200 cd/m2.

© (2001) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Tom Feng ; Tariq A. Ali ; E. S. Ramakrishnan ; Richard A. Campos and Webster E. Howard
"Structure and characterization of a white up-emitting OLED on silicon for microdisplays", Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, 30 (February 2, 2001); doi:10.1117/12.416907; http://dx.doi.org/10.1117/12.416907


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.