Abstract: A semiconductive conjugated copolymer comprises at least two chemically different monomer units which, when existing in their individual homopolymer forms, have different semiconductor bandgaps. The proportion of said at least two chemically different monomer units in the copolymer is selected to control the semiconductor bandgap of the copolymer so as to control the optical properties of the copolymer. The copolymer is formed in a manner enabling it to be laid down as a film without substantially affecting the luminescent characteristics of the copolymer and is stable at operational temperature.The semiconductor bandgap may be spatially modulated so as to increase the quantum efficiency of the copolymer when excited to luminesce, to select the wavelength of radiation omitted during luminescence or to select the refractive index of the copolymer.

Abstract: An electroluminescent device includes a semiconductor layer (4) in the form of a thin dense polymer film comprising at least one conjugated polymer, a first contact layer (5) in contact with a first surface of the semiconductor layer, and a second contact layer (3) in contact with a second surface of the semiconductor layer. The polymer film (4) of the semiconductor layer has a sufficiently low concentration of extrinsic charge carriers that on applying an electric field between the first and second contact layers across the semiconductor layer so as to render the second contact layer positive relative to the first contact layer charge carriers are injected into the semiconductor layer and radiation is emitted from the semiconductor layer.

Abstract: An illumination system for a display device includes an array of cylindrical lenslets for imaging an adjacent array of different color monochromatic emitting phosphor stripes onto the display device. Also included is a microcollimator reflector for each stripe which partially collimates emitted light from each phosphor stripe with respect to at least one axis of the display. An edge-irradiated energy distributor plate efficiently distributes ultra-violet energy by total internal reflection to the phosphor stripes that act as scattering and absorbing centers for the ultra-violet energy.

Abstract: A Field Emission Display ("FED") is disclosed having a brightness to project images. To achieve this benefit, the FED includes a pixelator which coupled to a display for displaying and projecting the image. By design, the pixelator conducts a drive current passing through the display grid corresponding to a degree of brightness in the resulting panel display. A first resistor having a first value is coupled between the pixelator and a voltage node or ground. Moreover, a second resistor having a second value at most one half of the first value is employed. A switch for connecting the first resistor in parallel with the second resistor is closed when a control signal is received when the switch is enabled, the equivalent resistance between the pixelator and a voltage node or ground is substantially reduced. In another embodiment, a tapped resistor replaces the first resistor and the second resistor. When the control signal is received, a portion of the drive current is shunted through the switch.

Abstract: A field emitter structure is formed, having trench accessible cold cathode tips is fabricated by forming trenches in a substrate. The trenches are subsequently filled with a conformal insulating layer, a highly conductive layer, and a polysilicon layer. The layers are etched to form emitter tips which are disposed contiguous with the trenches. Electrical signals are propagated through the trenches permitting increased performance of the emitter structure.

Abstract: A method is provided for fabricating a high resistance row (or column) electrode with which a low resistance runner is associated. The electrode is formed, preferably from a substantially transparent material, and a low resistant (i.e., highly conductive material) is disposed thereon. The highly conductive material is subsequently etched such that the highly conductive material remains along the sides of the electrode, thereby reducing the resistivity of the electrode.

Abstract: A method is provided for forming in a semiconductive conjugated polymer at least first and second regions having different optical properties. The method comprises: forming a layer of a precursor polymer and permitting the first region to come into contact with a reactant, such as an acid, and heat while permitting the second region to come into contact with a lower concentration of the reactant. The reactant affects the conversion conditions of the precursor polymer in such a way as to control the optical properties of at least the first region so that the optical properties of the first region are different from those of the second region.The precursor polymer may comprise a poly(arylene-1,2-ethanediyl) polymer, at least some of the ethane groups of which include a modifier group whose susceptibility to elimination is increased in the presence of the reactant.

Abstract: Unwanted electric fields in the area in front of a CRT can be produced by flyback voltage pulses which occur across the horizontal deflection coils and are coupled to the inner DAG coating of the CRT. The unwanted fields can be eliminated by providing voltage pulses equal and opposite to the causative voltage pulses and applying the provided voltage pulses to the inner coating and the anode button, leaving no fields to be cancelled in the relevant area.

Abstract: An improved gravity feed display system and display card for the display of jewelry articles and the like. The gravity feed display system comprises pairs of inclined slots spaced apart to slidably receive the display cards in such manner that when a lower card is pulled out, a card situated adjacently above slides down to occupy the position of the card being removed. Each display card comprises a generally flat panel and a top flange, and means to prevent the overlapping of an adjacent card while in the display system.

Abstract: An improved image transfer device for transferring light images or the like is formed using "in-situ" optical waveguides or transfer elements rather than discrete optical fibers. In one embodiment, at least first and second tapered modular spacers are formed with grooves etched therein extending between first and second end surfaces thereof. Each of the grooves has a raised lip structure which enables the spacers to be interconnected in a rigid confronting relationship to produce a plurality of closed tapered channels. Each of the channels is then filled with a conductor to form an optical waveguide for transferring an elemental portion of an image between the first and second end surfaces.

Abstract: A combination holder for an ornamental article and protector therefor is disclosed and includes a substantially flat card member on which the ornamental article is mounted. A cover member having a dish-like configuration receives the card member therein, the cover member having a front wall that is located in spaced relation with respect to the front surface of the card member when it is mounted on the holder so that the ornamental article as mounted on the card member is protected by the cover member during shipment and/or display of the card member and the ornamental article.

Abstract: A method and apparatus for making fiber optic light transfer devices has apparatus to continuously supply a selected number of optical fibers, apparatus to form those fibers into a ribbon and adjust to different wrapping radii of a wrapper. The wrapper is in the form of a rotary wheel on which there is mounted a matrix former and a spaced ribbon former. The end of the ribbon is clamped to the rotary wheel and as the wheel is rotated successive wraps of ribbon are made on aligned U-shaped support surfaces of the formers. A separator is positioned between each ribbon layer in the matrix former and a channel-shaped locator element is positioned on the spaced ribbon former before each ribbon layer is wrapped thereon. A reflective glue is added to the layers in both formers. A clamp clamps the wrapped layers in each former after which they are cured in an oven.

Abstract: A fiber optic light transfer device with variable resolution comprises a plurality of optical fibers arranged at one end thereof as a series of spaced, parallel fiber ribbons. The ribbons are supported in a locator body having a plurality of spaced, parallel slots therein each defined by first, second and third support surfaces and an end surface of the locator body. Each of the slots includes one or more projections selectively spaced along the first support surface for supporting the associated fiber ribbon in the slot such that one or more of the fibers therein are are in a spaced relationship. Preferably, the fiber optic light transfer device includes "n" parallel fiber ribbons each including "n" optical fibers.

Abstract: Light transfer apparatus and method and apparatus for making disclosed includes a screen row clamping assembly that clamps a row of screen units side by side in a straight row with uniform spacing of fiber ribbons between units. A matrix row clamping assembly clamps a row of matrix units side by side in a straight row with uniform spacing of fiber ribbons between units. A pair of alignment rods connect screen units side by side and also connect to alignment ribs on the back of the screen units that interfit end to end and are joined by connecting channels. The alignment rods fasten to terminator bars secured to a screen frame and the ribs are also secured to the screen frame. The rows of matrix units are placed in a matrix frame in which they are held together in a square configuration with uniform spacing between and alignment of fiber ribbons. The matrix ends are cut to a planar surface by a band saw.