摘要:
The invention relates to an encapsulated organic light emitting device having an improved protective covering comprising a first layer of passivating metal, a second layer of an inorganic dielectric material and a third layer of polymer.
摘要:
A method is described for preparing opto-electronic devices such as organic light-emitting diodes. The method is a thermal dye transfer process in which a dye pattern is transferred from a dye transfer plate into a receiving layer of a substrate by bringing the dye transfer plate into contact with the receiving layer and heating to a relatively low temperature, preferably below the vaporization or sublimation temperature of the dye. The pattern of the dye is maintained upon transfer and diffusion. Preferably, the method is repeated to provide a three-color pattern in the receiving layer. The invention also encompasses an opto-electronic device comprising a receiving layer as prepared by the aforementioned method wherein the receiving layer is sandwiched between two electrodes, one of which is transparent. Optionally, a hole-transporting or electron-transporting layer can be deposited between each electrode and the receiving layer.
摘要:
The invention relates to an organic electroluminescent device comprising a light emitting composition disposed between a first and second electrode. The composition comprises a charge transporting polymer and an organic salt comprising immobilized anions and cations nonuniformly distributed in the polymer matrix.
摘要:
High density circuitry and metallic patterns are grown from polymer that has been patterned using a contact molding process. The patterned polymer is either intrinsically seedable or treated to make it seedable, e.g., it may be seeded with metallic seed ions, such as Pd ions. The patterned polymer is placed in an electroless deposition bath, with metal being plated onto its surface. Using these methods, metal (e.g, copper) may be deposited onto substrates of either organic or inorganic dielectric materials. The dielectric materials may comprise epoxy resins, ceramics, semiconductors (Si), glass, and silicon oxide.
摘要:
Novel liquid crystal display (LCD) structures for full-color liquid crystal displays using photoluminescent (PL) fibers. The new architectures simplify the LCD fabrication process by replacing complicated, time consuming photolithography steps for color filter fabrication to a low-cost, high-throughput fiber spinning technology. The new LCD architecture implementing the approach has a higher power efficiency than conventional LCDs. Three structures of LCD devices utilizing photoluminescent (PL) fiber arrays includes: a first structure having PL fiber arrays situated behind the LC shutter (relative to viewers); a second structure having PL fiber arrays situated on top of the LC shutter; and a third structure where the PL fiber arrays are located outside the LC cell. In one of these structures, the fibers not only photoluminesce, but also polarize incident light thus reducing LCD fabrication cost.
摘要:
Fatigue in organic photoconductors in which the charge transport layer is a source of acidic protons is reduced by including in the charge transport layer a small amount of a nonvolatile basic amine soluble in a common solvent with a charge transport material and the binder of the charge transport layer.
摘要:
A multi-stable memory or data storage element is used in crosspoint data-storage arrays, as a switch, a memory device, or as a logical device. The general structure of the multi-stable element comprises a layered, composite medium that both transports and stores charge disposed between two electrodes. Dispersed within the composite medium are discrete charge storage particles that trap and store charge. The multi-stable element achieves an exemplary bi-stable characteristic, providing a switchable device that has two or more stable states reliably created by the application of a voltage to the device. The voltages applied to achieve the “on” state, the “off” state, any intermediate state, and to read the state of the multi-stable element are all of the same polarity.
摘要:
A multi-stable memory or data storage element is used in crosspoint data-storage arrays, as a switch, a memory device, or as a logical device. The general structure of the multi-stable element comprises a layered, composite medium that both transports and stores charge disposed between two electrodes. Dispersed within the composite medium are discrete charge storage particles that trap and store charge. The multi-stable element achieves an exemplary bi-stable characteristic, providing a switchable device that has two or more stable states reliably created by the application of a voltage to the device. The voltages applied to achieve the “on” state, the “off” state, any intermediate state, and to read the state of the multi-stable element are all of the same polarity. The multi-stable element is stable, cyclable, and reproducible in both the “on” state and the “off” state. The storage medium has a relatively high resistance in both its on and off states. Consequently, a dense array can be fabricated without significant cross-talk between adjacent elements. No patterning of the layer of storage medium is required.
摘要:
Multifunctional electroactive copolymers are provided. The copolymers may be A-B-A triblock copolymers, brush-type graft copolymers, or variations thereof. In a preferred embodiment, the copolymers are “dual use” in that they comprise both a light emitting segment and a charge transport segment. Methods of synthesizing the novel electroactive copolymers are provided as well, as are opto-electronic devices, particularly LEDs, fabricated with the novel copolymers.
摘要:
The invention relates to an organic electroluminescent device comprising a light-emitting composition disposed between a first and second electrode. The composition comprises poly(fluorene-co-anthracene).