Patent ID: 7888853
Filing Date: 2011-02-15
Classification: C09K,F21K,Y02B

Abstract:
1. A light-emitting device comprising: a first substrate; a first pair of electrodes formed above the first substrate; a second substrate disposed to face the first substrate and spaced apart from the first substrate; a second pair of electrodes formed above the second substrate; a first light-emitting layer disposed between the first substrate and the second substrate and close to the first substrate, the first light-emitting layer comprising a first light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt; a second light-emitting layer disposed between the first substrate and the second substrate and close to the first substrate, the second light-emitting layer comprising a second light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt; and a selective permeable layer interposed between the first light-emitting layer and the second light-emitting layer, the selective permeable layer being non-permeable or hardly permeable to the first and second light-emitting materials but permeable to the supporting salt.