Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7425375 | Organic EL element and organic EL display An organic EL element of the present invention comprises a substrate, an electrode layer, an organic layer, and an electrode layer, whereas the organic layer 3 contains a vinyl polymer obtained by polymerizing a polymerizable monomer containing a compound rep... | 09/16/2008 |
| 7417247 | Pentaarylcyclopentadienyl units as active units in resistive memory elements Polymers are described which exhibit a resistive hysteresis effect. The polymers include a polymer backbone to which pentaarylcyclopentadienyl radicals are bonded as side groups. A resistive memory element is formed that includes the polymer as a storage medium. By ... | 08/26/2008 |
| 7351788 | Polymer containing substituted triphenylamine units A method for making a polymer containing a first repeat unit having formula: —Ar—N(R)—Ar(N(R′)—Ar)x— which may be substituted or unsubstituted where x or 0 or 1; each Ar is the same or different and independently is a substituted or unsubstitu... | 04/01/2008 |
| 7348072 | Light-emitting polymer and organoelectroluminescent display using the same A spirofluorene-type of a blue light-emitting polymer including an indenofluorene repeating unit having a spiroanthracene structure, and an organic electroluminescent display using the polymer. The brightness and efficiency property of the organic electroluminescent... | 03/25/2008 |
| 7348073 | Spirocyclopentaphenanthrenefluorene-based compound and organoelectroluminescent device using the same A spiro-based compound containing cyclopentaphenanthrene and fluorene, which is used for an organoelectroluminescent device and an organoelectroluminescent device having the spiro-based compound. The spiro-based compound containing cyclopentaphenanthrene and fluoren... | 03/25/2008 |
| 7238435 | Polymeric compound and organic luminescence device A main chain-type or side chain-type polymeric compound having a structure wherein at least one metal complex segment having a plurality ligands is introduced into a main chain or a side chain is provided. In the case where the polymeric compound is the main chain-t... | 07/03/2007 |
| 7135241 | Light-emitting block copolymers composition, process and use Generally, and in one form, the present invention is a composition of light-emitting block copolymer. In another form, the present invention is a process producing a light-emitting block copolymers that intends polymerizing a first di(halo-methyl) aromatic monomer c... | 11/14/2006 |
| 7115899 | Light-emitting copolymers and electronic devices using such copolymers Novel pentaphenylene copolymers which are useful in electronic devices are described. The copolymers have at least one monomeric unit having Formula I: ... | 10/03/2006 |
| 7108924 | Polymer compound and electroluminescent element There is provided a polymer compound in which a metal complex is bonded to a main chain of a polymer via a substituent for imparting a given distance therebetween. Specifically, a polymer compound is provided which has a partial structure represented by the general ... | 09/19/2006 |
| 6693295 | Indole derivative, material for light-emitting device and light-emitting device using the same A light-emitting device comprising: a pair of electrodes formed on a substrate; and at least one organic compound layer containing a light-emitting layer provided between the electrodes, wherein the at least one organic compound layer comprises a host mat... | 02/17/2004 |
| 6686066 | Light-emitting compound and display device adopting light-emitting compound as color-developing substance A light-emitting compound and a display device adopting the light-emitting compounds as a color-developing substance. When the display device adopts an organic layer formed of the light-emitting compound, such as a light-emitting layer or an electron tran... | 02/03/2004 |
| 6670213 | Method of preparing photoresponsive devices, and devices made thereby A method of preparing an efficient photoresponsive device includes the steps of providing a first electrode on a substrate, providing a layer of an organic material including a blend of at least two semiconductive polymers having different electrode affin... | 12/30/2003 |
| 6638644 | Electroluminescent devices having diarylanthracene polymers An electroluminescent device comprises an anode, a cathode, and an emissive layer having a polymer luminescent material disposed between the anode and cathode, the polymer luminescent material includes diarylanthracene-based conjugated polymer having a re... | 10/28/2003 |
| 6632544 | Aromatic amine derivative, soluble conductive compound, and electroluminscent element An aromatic amine derivative of the following general formula (1) is useful to form an auxiliary carrier transporting layer in an electroluminescent device. ##STR1## R1 is a monovalent hydrocarbon group or organooxy group, and A and B ... | 10/14/2003 |
| 6621099 | Polythiophenes and devices thereof An electronic device containing a polythiophene of Formula (I) ##STR1## wherein R and R' are side chains; A is a divalent linkage; x and y represent the number of unsubstituted thienylene units; z is 0 or 1, and wherein the sum of x and y is greater than ... | 09/16/2003 |
| 6617051 | Organic electroluminescence device The invention is an organic electroluminescent device that comprises organic compound layer(s) including at least one organic emitting layer sandwiched between a pair of electrodes, wherein at least one organic compound layer is formed from an organic com... | 09/09/2003 |
| 6605373 | Fluorene-containing polymers and electroluminescent devices therefrom A copolymer comprising 10-90 percent by weight of groups of Formula (I): ##STR1## and from 10-90 percent by weight of groups selected from Formulas (II), (III), and (IV): ##STR2## and mixtures thereof; wherein R1 is independently in each occurr... | 08/12/2003 |
| 6590125 | Blue light-emitting polymer prepared using a fluorinated tetraphenyl monomer and an EL device manufactured using the polymer A light-emitting polymer and its preparation method, the polymer being excellent in electron injection and transport ability as well as hole injection and transport ability in an EL device, the EL device manufactured from the polymer being also emittable ... | 07/08/2003 |
| 6558219 | Method of making electroluminescent devices having varying electrical and/or optical properties A method of forming an electroluminescent device, including the steps of forming a first charge carrier injecting layer for injecting charge carriers of a first polarity, forming an organic charge carrier transport layer over the first charge carrier inje... | 05/06/2003 |
| 6559256 | Polymers for use in optical devices Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-form... | 05/06/2003 |
| 6555959 | Material for light emitting device, light emitting device using thereof, and amine compound A material for a light emitting device which is a compound represented by the following formula (I): ##STR1## wherein Ar1 and Ar6, which are the same or different, each represents a divalent aryl group or a divalent heterocyclic grou... | 04/29/2003 |
| 6544670 | Hole transporting polymer and organic electroluminescence device using the same A hole transporting polymer including a repeating unit represented by one of formulas (1) and (5): ##STR1## It can exhibit an excellent hole transporting property and exhibits superior durability and film-forming properties. An organic EL device usin... | 04/08/2003 |
| 6537687 | Light emitting element material A red light emitting element material with high color purity and a light emitting element using the red light emitting element material. A light emitting element material including a compound which is expressed by following general formula (A) and a light... | 03/25/2003 |
| 6512070 | Dual purpose electroactive copolymers 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 emittin... | 01/28/2003 |
| 6506504 | Light-emitting compound and display device adopting light-emitting compound as color-developing substance A light-emitting compound and a display device adopting the light-emitting compounds as a color-developing substance. When the display device adopts an organic layer formed of the light-emitting compound, such as a light-emitting layer or an electron tran... | 01/14/2003 |
| 6495273 | Blue light-emitting polymer prepared using a florinated tetraphenyl monomer and an EL device manufactured using the polymer A light-emitting polymer and its preparation method, the polymer being excellent in electron injection and transport ability as well as hole injection and transport ability in an EL device, the EL device manufactured from the polymer being also emittable ... | 12/17/2002 |
| 6472817 | Organic light emitting device incorporating a waveguide The present invention provides an organic light emitting device having a first electrode and a transparent electrode with an organic light emitting layer therebetween; characterized by a waveguide provided on the opposite side of the transparent electrode... | 10/29/2002 |
| 6451458 | Electroluminescent material and electroluminescent cell An electroluminescent cell which exhibits a high luminous efficiency and excellent durability is provided. The electroluminescent material comprises a unit (AB) which is formed by alternate copolymerization of hole transfer monomers and electron transfer ... | 09/17/2002 |
| 6433115 | Opto-electronic devices fabricated with dual purpose electroactive copolymers 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 emittin... | 08/13/2002 |
| 6391471 | Functional device and multi-component multi-phase type polymeric shaped material The present invention provides a multi-component multi-phase type polymeric shaped material in which a plurality of hole- or electron-conducting phases constitute a three-dimensional bicontinuous nano phase separation structure, and a functional device us... | 05/21/2002 |
| 6355756 | Dual purpose electroactive copolymers, preparation thereof, and use in opto-electronic devices 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 emittin... | 03/12/2002 |
| 6355773 | Functional polymer and organic electroluminescence element, optical memory, and hole transport element using the same The invention features a functional polymer which provides three primary colors and is free from aggregation of high molecular chains. The functional polymer is obtained by copolymerization of fluorene unit and acene unit having three or more benzene ring... | 03/12/2002 |
| 6353083 | Fluorene copolymers and devices made therefrom This invention relates to: (a) fluorene copolymers comprising at least 10% (by residual monomeric units) of 9-substituted and/or 9,9-disubstituted fluorene moieties and at least two other monomeric units containing delocalized p-electrons, (b) polymer ble... | 03/05/2002 |
| 6309763 | Fluorene-containing polymers and electroluminescent devices therefrom A copolymer comprising 10-90 percent by weight of groups of Formula (I): ##STR1## and from 10-90 percent by weight of groups selected from Formulas (II), (III), and (IV): ##STR2## and mixtures thereof; wherein R1 is independently in each occurr... | 10/30/2001 |
| 6268072 | Electroluminescent devices having phenylanthracene-based polymers An electroluminescent device comprises an anode, a cathode, and polymer luminescent materials disposed between the anode and cathode, the polymeric luminescent materials includes 9-(4-adamantanyl)phenyl)-10-phenylanthracene-based polymers of the foll... | 07/31/2001 |
| 6204515 | Semiconducting polymer field effect transistor A field effect transistor is made of five parts. The first part is an insulator layer, the insulator layer being an electrical insulator such as silica, the insulator layer having a first side and a second side. The second part is a gate, the gate being a... | 03/20/2001 |
| 6004681 | Light-emitting devices containing network electrode polymers in electron blocking layer In general terms, the present invention includes a light emitting polymeric material, the polymeric material comprising: (a) an electron transporting polymer; the electron transporting polymer in contact with (b) an electron blocking polymer, the electron... | 12/21/1999 |
| 5980781 | Polymeric fluorescent substance and organic electroluminescence device Disclosed are an organic electroluminescence device having at least a light emitting layer between the electrodes consisting of one pair of an anode and a cathode, at least one of which electrodes is transparent or semi-transparent, wherein said light emi... | 11/09/1999 |
| 5959070 | Rigid rod and ladder polymers; a process for making said polymers; a process of producing light using said polymers; and light emitting devices employing said polymers A class of rigid rod and latter polymers having light emitting capability is provided. Included in this class of polymers are those having novel repeating structural units. These rigid rod and ladder polymers are employed in light emitting diodes.... | 09/28/1999 |
| 5955834 | Light emitting devices utilizing high work function electrodes In general terms the present invention includes light emitting polymeric materials and light emitting devices made therefrom. The present invention also includes light emitting devices incorporating light emitting polymeric materials of the present invent... | 09/21/1999 |
