Abstract: Aryl-substituted poly-p-arylenevinylenes comprising a repeating unit of the formula (C1), in which one or more of the unsubstituted aromatic carbon atoms may be replaced by nitrogen atoms, —OCm and —OCn are alkoxy groups, m and n are integers from 2 to 6 with m+n=8, p is 0, 1, 2 or 3 and in which R is CN, Cl, F, CF3, NO2, or SO3Z wherein Z is a monovalent cation such as Na+, or in which R is —XR1 wherein the unit —X— represents a single bond, —O—, —S—, —CO—, —COO—, —OCO—, —SO—, —SO2—, —N(R2)— or —N(R2)CO—, and wherein R1 and R2 are the same or different and constitute a straight-chain branched or cyclic C1-C20 alkyl group or together an C1-C20 alkylene group, in which C1-C20 alkyl or C1-C20 alkylene group one or more hydrogens are optionally substituted by F or a C4-C12 aryl group and/or one or more non-adjacent —CH2— units are optionally substituted by C4-C12 arylene, —O—, —S—, —CO—, —COO—, —OCO—, —SO—, —SO2—, —N(R3)— or —N(R3)CO— where R3 is C1-C20 alkyl, or in which R is a C4-C12 aryl group which may o

Abstract: Switching between 2D and 3D visualization is achieved by an optical-index matching fluid (9) which can be brought between a lenticular sheet (6, 7) and a top plate (10). The fluid may contain two immiscible fluids while switching is based on (re)distribution of the fluids due to electrostatic forces.

Abstract: An electroluminescent device (13), such as a light emitting diode, which has a light-reflecting surface (10) causing undesirable reflection of ambient light incident on the device is provided with a combination of a reflective circular polarizer (17) and an absorbing circular polarizer (23) to suppress the undesirable reflection of ambient light thus improving the contrast of the device when used under high intensity ambient lighting conditions while maintaining a satisfactory brightness. The reflection band of the reflective circular polarizer regions (17?) of the reflective circular polarizer (17) are preferably tuned to the corresponding emission band of the luminescent regions (9?) of the electroluminescent device to further increase the contrast of the device while substantially maintaining the same brightness.

Abstract: A method is proposed for measuring water permeability of substrates (1). A reactive compound (Ca, Ba) which reacts with a diffusing material, e.g. water, is applied on the substrate and the change in time of transmissivity, reflectivity of the layer is monitored in time.

Abstract: A method is proposed for measuring water permeability of substrates (1). A reactive compound (Ca, Ba) which reacts with a diffusing material, e.g. water, is applied on the substrate and the change in time of transmissivity, reflectivity of the layer is monitored in time.

Abstract: An organic electroluminescent display device comprising a front electrode member, a counterelectrode member, an organic electroluminescent member arranged between the front electrode member and the counterelectrode member, and an optical filter member with a cut-off filter to absorb electromagnetic radiation whose wavelength is below a cut-off wavelength ?k, and to transmit electromagnetic radiation whose wavelength is above a cut-off wavelength ?k, has an improved contrast under bright ambient light conditions.

Abstract: Aryl-substituted poly-p-arylenevinylenes comprising a repeating unit of the formula (C1), 1

Abstract: The invention relates to a substrate for an electroluminescent (EL) display device comprising a front surface and a rear surface (7) onto which EL elements are to be arranged. The substrate comprises a plurality of reflectors (5) diverging towards the front surface. Furthermore, the relatively narrow ends (6) of the reflectors (5) are at least substantially coplanar and form part of said rear surface (7). The substrate according to the invention can be used in conventional processes of manufacturing EL devices.

Abstract: Aryl-substituted poly-p-arylenevinylenes comprising a repeating unit of the formula (C1), in which one or more of the unsubstituted aromatic carbon atoms may be replaced by nitrogen atoms, —OCm and —OCn are alkoxy groups, m and n are integers from 2 to 6 with m+n=8, p is 0, 1, 2 or 3 and in which R is CN, Cl, F, CF3, NO2, or SO3Z wherein Z is a monovalent cation such as Na+, or in which R is —XR1 wherein the unit —X— represents a single bond, —O—, —S—, —CO—, —COO—, —OCO—, —SO—, —SO2—, —N(R2)— or —N(R 2)CO—, and wherein R1 and R2 are the same or different and constitute a straight-chain branched or cyclic C1-C20 alkyl group or together an C1-C20 alkylene group, in which C1-C20 alkyl or C1-C20 alkylene group one or more hydrogens are optionally substituted by F or a C4-C12 aryl group and/or one or more non-adjacent —CH2— units ar

Abstract: Switching between 2D and 3D visualization is achieved by an optical-index matching fluid (9) which can be brought between a lenticular sheet (6, 7) and a top plate (10). The fluid may contain two immiscible fluids while switching is based on (re)distribution of the fluids due to electrostatic forces.

Abstract: An organic electroluminescent display device comprising a front electrode member, a counterelectrode member, an organic electroluminescent member arranged between the front electrode member and the counterelectrode member, and an optical filter member with a cut-off filter to absorb electromagnetic radiation whose wavelength is below a cut-off wavelength &lgr;k, and to transmit electromagnetic radiation whose wavelength is above a cut-off wavelength &lgr;k, has an improved contrast under bright ambient light conditions.

Abstract: A method is proposed for measuring water permeability of substrates (1). A reactive compound (Ca, Ba) which reacts with a diffusing material, e.g. water, is applied on the substrate and the change in time of transmissivity, reflectivity of the layer is monitored in time.

Abstract: An electroluminescent device comprises a pattern-wise ink-jet printed electrode. The electrode supplies charges to an electroluminescent layer of the electroluminescent device and comprises a metal or a metal alloy. In a method of manufacturing such an electroluminescent device, the electrode is formed by ink-jet printing molten metal or metal alloy.

Abstract: Aryl-substituted poly-p-arylenevinylenes comprising a repeating unit of the formula (C1), 1