Patent Number: 6,761,835

Title: Phosphor multilayer and EL panel

Abstract: The invention aims to provide a phosphor multilayer eliminating a need for filters, having a satisfactory color purity and useful in white monochromatic EL devices, and an EL panel. Such objects are achieved by a phosphor multilayer comprising at least a first thin film and a second thin film wherein the first thin film is formed of a matrix material comprising barium aluminate as a main component, containing sulfur element and further containing Eu as a luminescent center, and the second thin film is formed of a matrix material comprising zinc sulfide as a main component, and an EL panel using the same.

Inventors: Yano; Yoshihiko (Tokyo, JP), Nagano; Katsuto (Tokyo, JP)

Assignee: TDK Corporation

International Classification: C09K 11/77 (20060101); H05B 33/14 (20060101); C09K 011/08 (); H01J 063/04 ()

Expiration Date: 07/13/2021