Patent ID: 6891583
Filing Date: 2005-05-10
Classification: G02F

Abstract:
1. An optoelectronic display device of high brightness and high contrast comprising: at least two thin photoluminescent layers having unequal photoemission or absorption spectra or both, wherein said at least two thin photoluminescent layers are characterized in a high degree of polarization in their absorption and are characterized in an emission which is either polarized or not, wherein said layers have a thickness of less than about 1 mm and a dichroic ratio in their absorption of more than about 5, and said thin photoluminescent layers comprising one or more at least partially conjugated oligomers or one or more at least partially conjugated polymers or both; and wherein said photoluminescent layers are located between a viewer and an electrooptical light valve; or said electrooptical light valve is located between the viewer and said photoluminescent layers; or said photoluminescent layers are inside said electrooptical light valve.