El element and lighting unit including the el element

H - Electricity – 05 – B

Patent

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Details

H05B 33/04 (2006.01) H01H 13/02 (2006.01) H01H 13/70 (2006.01) H05B 33/12 (2006.01)

Patent

CA 2416622

An EL element includes a light-transmitting substrate, a light- transmitting electrode layer over a first surface of the substrate, a luminescent layer over the light-transmitting electrode layer, a back electrode layer over the luminescent layer, and a waterproof insulating layer covering the light-transmitting electrode layer, the luminescent layer, and the back electrode layer. The EL element and a lighting unit have excellent resistance against water. The light-transmitting electrode layer, the luminescent layer, and the back electrode layer end before an outer periphery of the substrate as well as before an end face of the substrate at each hole or notch in the substrate. This arrangement provides the EL element and the lighting unit with the excellent resistance against water.

La présente invention concerne un élément EL comprenant un matériau de base photoémetteur, une couche d'électrode photoémettrice disposée sur la première surface du matériau de base, une couche de matériau photoémetteur disposée sur la couche d'électrode photoémettrice, une couche d'électrode de face arrière disposée sur la couche de matériau photoémetteur, et une couche d'isolation imperméable couvrant la couche de matériau photoémetteur, la couche de matériau photoémetteur et la couche d'électrode de face arrière. Ledit élément EL et une unité d'éclairage le comprenant présentent une excellente imperméabilité. La couche d'électrode photoémettrice, la couche de matériau photoémetteur et la couche d'électrode de face arrière sont formées sur la circonférence extérieure du matériau de base ou sur l'intérieur de la face d'extrémité d'un trou ou d'une coupe faite dans le matériau de base.

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