The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 2010
Filed:
Aug. 13, 2008
Hajime Nakamura, Kanagawa-Ken, JP;
Hajime Nakamura, Kanagawa-Ken, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system for simulating a characteristic of a light-emitting device includes a transport calculating module for calculating a concentration of carriers in the light-emitting device. The system includes an optical calculating module for calculating data sets including a total emission power factor of excitons set and a light extraction efficiency data. A diffusion calculating module uses the exciton formation rate and the total emission power factor to calculate a concentration of excitons and a total deactivation rate of the excitons. A device characteristics calculating module uses the light extraction efficiency data set and a radiative deactivation rate calculated from the total deactivation rate to calculate a device characteristic of the light-emitting device.