Abstract: Described in this application is an improved cartridge, such as a water filter, and housing for the filter. The filter is preferably of the push-in type and the filter housing includes an assembly to automatically set the water filter in position as a cover over the filter is closed. According to one embodiment, the assembly consists of a cover and lever linkage which engage complimentary protrusions on the water filter.

Abstract: A method for selecting two different light-emitting materials for use in an OLED device, each of which produces different color light, which combine to produce white light. Each light emitting material has its own point on a chromaticity diagram, and the light-emitting materials are selected such that, when a line is drawn between the first point and the second point, it passes through a desired white area defined on a chromaticity diagram.

Abstract: A white light-emitting OLED device comprising: an anode and a cathode; at least four light-emitting layers provided between the anode and the cathode, wherein each of the four light-emitting layers produces a different emission spectrum when current passes between the anode and cathode, and such spectra combine to form white light; and wherein the four light-emitting layers include a red light-emitting layer, a yellow light-emitting layer, a blue light-emitting layer, and a green light-emitting layer, arranged such that: i) each of the light-emitting layers is in contact with at least one other light-emitting layer, ii) the blue light-emitting layer is in contact with the green light-emitting layer, and iii) the red light-emitting layer is in contact with only one other light-emitting layer.

Abstract: An improved OLED structure that enhances both stability and luminance efficiency, includes a substrate; an anode and a cathode; a light-emitting layer disposed between the anode and cathode; and a hole-transporting structure disposed between the light-emitting layer and the anode including two or more sublayers; a first sublayer in contact with the light-emitting layer and including a first hole-transporting material and a first stabilizing dopant, and a second sublayer including a second hole-transporting material and a second stabilizing dopant, and a third dopant having a bandgap that is smaller than each of the bandgaps of the second hole-transporting material and the second stabilizing dopant, respectively.

Abstract: An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and, has located between the cathode and the light emitting layer, a further layer containing a cyclometallated complex represented by Formula (4?) wherein: Z and the dashed arc represent two or three atoms and the bonds necessary to complete a 5- or 6-membered ring with M; each A represents H or a substituent and each B represents an independently selected substituent on the Z atoms, provided that two or more substituents may combine to form a fused ring or a fused ring system; j is 0-3 and k is 1 or 2; M represents a Group IA, IIA, IIIA and IIB element of the Periodic Table; m and n are independently selected integers selected to provide a neutral charge on the complex; and provided that the complex does not contain the 8-hydroxyquinolate ligand. Such devices exhibit reduce drive voltage while maintaining good luminance.

Abstract: A method for making an OLED device, comprising: providing a plurality of subpixels of different colors, including at least three gamut-defining subpixels, each subpixel requiring an operating voltage which is based on the maximum current density required by that subpixel; selecting the display operating voltage to be equal to or greater than the maximum required subpixel operating voltage; and selecting the area of the subpixels to reduce the maximum required subpixel operating voltage, thereby reducing the display operating voltage so as to reduce power consumption in the device.

Abstract: An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and, has located between the cathode and the light emitting layer, a further layer containing a cyclometallated complex represented by Formula (4?) wherein: Z and the dashed arc represent two or three atoms and the bonds necessary to complete a 5- or 6-membered ring with M; each A represents H or a substituent and each B represents an independently selected substituent on the Z atoms, provided that two or more substituents may combine to form a fused ring or a fused ring system; j is 0-3 and k is 1 or 2; M represents a Group IA, IIA, IIIA and IIB element of the Periodic Table; m and n are independently selected integers selected to provide a neutral charge on the complex; and provided that the complex does not contain the 8-hydroxyquinolate ligand. Such devices exhibit reduce drive voltage while maintaining good luminance.

Abstract: A method of making an OLED device includes providing an anode and a spaced cathode, and a hole-transporting layer provided between the anode and cathode, such hole-transporting layer including a first hole-transporting material having a first glass transition temperature Tg1. The method further includes providing a first light-emitting layer including as a main component, a second hole-transporting material having a second glass transition temperature Tg2, such light-emitting layer disposed between the hole transporting layer and the cathode and in contact with the hole-transporting layer, and wherein Tg1 is greater than Tg2.

Abstract: A tandem OLED device having spaced electrodes includes broadband light-emitting units disposed between the electrodes that produce different emission spectra and each light-emitting unit produces light that has multiple spaced peak spectral components, and an intermediate connector disposed between each of the light-emitting units. The device also includes an array of at least three different color filters associated with the device which receives light from the broadband light-emitting units, the band pass of each of the color filters being selected to produce different colored light, wherein the full width at about half maximum of at least one of such spaced peak spectral components produced by each emitting unit is within the band pass of a color filter, and wherein each of the at least three different color filters receives at least one spaced peak spectral component having a full width at about half maximum that is within its band pass.

Abstract: A tandem OLED display for producing broadband light having at least two spaced electrodes includes two or more broadband light-emitting units disposed between the electrodes, at least two of which produce light having different emission spectra and wherein at least one of such broadband light-emitting units does not produce white light, and an intermediate connector disposed between adjacent light-emitting units.

Abstract: An OLED display having at least first, second, and third differently colored pixels includes a first light emitting layer provided over a substrate for the first and second pixels and a second light emitting layer provided over the substrate for the first, second, and third pixels, wherein the first and second light emitting layers produce light having different spectra, and wherein the light produced by overlapping the first and second light emitting layers has substantial spectral components corresponding to the light output desired for the first and second pixels, and the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third pixel; and first and second color filters in operative relationship with the first and second pixels.

Abstract: An OLED display having at least first, second, and third differently colored pixels includes a first light emitting layer provided over a substrate for the first and second pixels and a second light emitting layer provided over the substrate for the third pixel wherein the first and second light emitting layers produce light having different spectra and the light produced by the first light emitting layer has substantial spectral components corresponding to the light output desired for the first and second pixels, and the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third pixel, and first and second color filters in operative relationship with the first and second pixels.