With Dielectric Layer Patents (Class 313/509)
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Patent number: 7456570Abstract: An organic EL display includes an organic EL device comprising lower electrodes, upper electrodes and an organic EL layer therebetween, and color-converting filter layers that absorb light emitted from the organic EL device and carry out color conversion, a layer having a color filter function of transmitting only the color of the light emitted from the organic EL device is provided between the color-converting filter layers and the organic EL device, whereby there is provided an organic EL display that has good display quality, with a high contrast ratio under illumination with a fluorescent lamp, sunlight or the like.Type: GrantFiled: May 21, 2003Date of Patent: November 25, 2008Assignee: Fuji Electric Holdings Co., Ltd.Inventors: Yukinori Kawamura, Koji Kawaguchi, Kenya Sakurai
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Patent number: 7449246Abstract: A barrier coating of organic-inorganic composition, the barrier coating having optical properties that are substantially uniform along an axis of light transmission, said axis oriented substantially perpendicular to the surface of the coating.Type: GrantFiled: June 30, 2004Date of Patent: November 11, 2008Assignee: General Electric CompanyInventors: Tae Won Kim, Christian Maria Anton Heller, Marc Schaepkens, Ahmet Gun Erlat, Min Yan
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Publication number: 20080252211Abstract: An EL lamp includes a substrate, which is transparent in at least a light-emitting region and an electrode assembly with a transparent electrode layer and a back electrode layer, which face each other in the light-emitting region. A phosphorescent layer and a dielectric layer are arranged between the transparent electrode layer and the back electrode layer. A first connection line is provided for connecting the transparent electrode to a driver circuit and a second connection line is provided for connecting the back electrode to a driver circuit. According to an important aspect of the invention, the EL lamp comprises an insulating layer for insulating the second connection line at least locally from the back electrode and/or, if the transparent electrode extends into a peripheral region of the EL lamp, for insulating the second connection line from the transparent electrode.Type: ApplicationFiled: March 21, 2006Publication date: October 16, 2008Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.Inventors: Antonio Brunacci, Cecile Jouanique-Dubuis, Serge Kater
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Publication number: 20080252210Abstract: A method is provided to isolated conductive pads on top of a multi-layer polymer device structure. The method utilizes laser radiation to ablate conductive material and create a non-conductive path, electrically isolating the conductive pads. The process is self-limiting and incorporates at least one layer within the stack that absorbs the radiation at the required wavelength. The prevention of radiation degradation of the underlying layers is achieved, as absorption of radiation occurs primarily on the surface of the structure, but not in any of the radiation sensitive underlying layers of the electronic device. The method preferably uses low energy infrared radiation which has been shown to produce little debris and no device degradation.Type: ApplicationFiled: December 2, 2005Publication date: October 16, 2008Applicant: PLASTIC LOGIC LIMITEDInventors: Michael Banach, Thomas Meredith Brown, Carl Hayton
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Patent number: 7436115Abstract: The present invention discloses a method for fabricating an electroluminescent lamp that includes a step in which an electroluminescent active layer is formed by curing a UV curable electroluminescent composition. Embodiments of the method of the present invention in which each layer of a multilayer electroluminescent device are fabricated from UV curable compositions are also disclosed. A UV curable dielectric composition suitable for utilization in an electroluminescent lamp is also provided.Type: GrantFiled: March 1, 2005Date of Patent: October 14, 2008Inventors: Roy C. Krohn, Scott E. Howe, Christopher C. Ryan
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Publication number: 20080231551Abstract: On a front substrate, a dielectric layer for accumulating the wall charge is formed, and inside the dielectric layer, a first electrode and a second electrode intersecting each other are formed with a predetermined pitch. The dielectric layer is not flat but is convex at the intersection of the first electrode and the second electrode, and the thickness in the direction of the discharge space from the second electrode at the intersection is larger than the thickness in the remaining area. Consequently, since the electric field distribution at the intersection is coarser than that at places apart from the intersection when discharge is sustained by causing an electric field distribution in the discharge space through the dielectric layer, discharge occurs not at the intersection but in four positions at places apart from the intersection, so that the luminous efficiency per discharge cell is improved.Type: ApplicationFiled: March 22, 2005Publication date: September 25, 2008Applicant: HITACHI PLASMA PATNET LICENSING CO.,Inventors: Tomoyuki Nukumizu, Tadayoshi Kosaka, Kazushige Takagi, Yoshiho Seo, Hajime Inoue, Koichi Sakita
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Publication number: 20080224609Abstract: An inorganic light emitting display including: a first electrode; a second electrode facing the first electrode; a light emitting layer disposed between the first electrode and the second electrode; and an field emission layer disposed between the light emitting layer and the second electrode.Type: ApplicationFiled: February 6, 2008Publication date: September 18, 2008Applicant: Samsung SDI Co., Ltd.Inventors: Yoon-Jin Kim, Jae-Myung Kim, Hee-Sung Moon, Mun-Ho Nam, Hyoung-Bin Park, Seung-Hyun Son
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Patent number: 7425795Abstract: This invention addresses how an end user can create an electroluminescent device (1, 31) using basic components obtained by the end user as retail items. The layers or subassemblies (15, 17) are created first. Then the layers are assembled to form a completed device customized as selected by the end user. The subassemblies may be created layer-by-layer by thermal inkjet. Elements used typically will be made by manufacturers and sold commercially separately. This encompasses the printing of conductive patterns for electroluminescence on paper. In one aspect a display has a main body that may be permanent and useful indefinitely, while a part carrying the conductive pattern defining the display is readily removed and is replaced by another such part on which a new conductive pattern is printed. For tight contact with the main body, the display provides releasable pressure. Air pockets are minimized with a thin layer of highly viscous dielectric liquid.Type: GrantFiled: August 23, 2005Date of Patent: September 16, 2008Assignee: Lexmark International, Inc.Inventors: Frank Edward Anderson, Michael John Dixon, James Paul Drummond, Bryan Dale McKinley, Amanda Kay Plakosh-Angeles, Jerry Randall Reed, Jeanne Marie Saldanha Singh, George Nelson Woolcott
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Publication number: 20080218073Abstract: Systems and methods are provided for electroluminescent display elements. These electroluminescent display elements can include a dielectric layer having an upper surface and a lower surface and a top conductive layer having an upper surface and a lower surface, where the top conductive layer and the dielectric layer are positioned opposite one another so that the lower surface of the top conductive layer faces the upper surface of the dielectric layer. The electroluminescent display elements can further include a phosphor layer, where the phosphor layer is arranged between the dielectric layer and the top conductive layer, and a bottom conductive layer having an upper surface and a lower surface, where the bottom conductive layer and the dielectric layer are positioned opposite one another so that the upper surface of the bottom conductive layer faces the lower surface of the dielectric layer, and where the bottom conductive layer forms a first bottom electrode and a second bottom electrode.Type: ApplicationFiled: March 8, 2007Publication date: September 11, 2008Inventors: Adrian Kitai, Deven J. Anthony
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Publication number: 20080218075Abstract: An electroluminescent display comprising a substrate (1), a substantially transparent electrode (2) adjacent to the substrate, a layer of electroluminescent material (3) adjacent to the substantially transparent electrode, a layer of dielectric material (4) adjacent to the layer of electroluminescent material and a further electrode (5) adjacent to the dielectric layer, in which there is further provided an intermediate layer (6) between the substantially transparent electrode and the layer of electroluminescent material. The intermediate layer typically acts as a diffuser and may comprise Barium Titanate.Type: ApplicationFiled: January 6, 2006Publication date: September 11, 2008Applicant: PELIKON LIMITEDInventors: William Frank Tyldesley, Stephen Green
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Publication number: 20080218074Abstract: A new class of light emitting and laser diodes is disclosed wherein ballistic (without collisions) electron propagation along the nanotubes, grown normally to the substrate plane on the common metal electrode, provides conditions for the light emission from the nanotubes. The electrons, tunneling from the input contact into high energy states in the nanotubes, emit light via electron energy relaxation between the quantum energy levels existing in the nanotubes due to quantum size effect. In the disclosed devices, planar layer deposition technology is used to form a diode structure with two electrodes attached to the nanotubes ends.Type: ApplicationFiled: March 9, 2007Publication date: September 11, 2008Inventor: Alexander Kastalsky
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Publication number: 20080218076Abstract: An electroluminescent device having a light emitting layer (25) containing phosphor particles (31, 32), wherein the phosphor particles protrude from the light emitting layer to cause the surrounding layers to conform to the protrusions, thus increasing the performance of the lamp. Methods of constructing a lamp using a temperature above the softening temperature of the insulating layer of the device are also disclosed.Type: ApplicationFiled: February 22, 2008Publication date: September 11, 2008Applicant: Kabay & Company Pty LtdInventors: Gabriella H. Kabay, Ernest Kabay
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Patent number: 7423374Abstract: An organic electroluminescent display element includes a substrate, a plurality of first electrodes, an auxiliary electrode, an insulating layer, an organic layer, a second electrode, and a conductive material. The auxiliary electrode is provided between the plurality of first electrodes on the substrate and separated from the plurality of first electrodes. The insulating layer covers the auxiliary electrode, separates and isolates the plurality of first electrodes from each other, and has through holes extending to the auxiliary electrode. The organic layer is provided on each of the plurality of first electrodes. The second electrode covers a whole surface of the insulating layer and the organic layers and allowing light emitted in the organic layers to transmit therethrough. The conductive material is provided in the through holes, for electrically connecting the auxiliary electrode to the second electrode.Type: GrantFiled: April 26, 2005Date of Patent: September 9, 2008Assignee: Sharp Kabushiki KaishaInventor: Kiyoshi Okano
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Patent number: 7423373Abstract: An object of the present invention is to provide a structure and a manufacturing method of a light emitting device, which reduces the amount of water remaining in the light emitting device. Another object of the invention is to provide a structure and a manufacturing method of a light emitting device, which suppresses the deterioration of a light emitting element due to water remaining in the light emitting device. A light emitting device of the invention includes a thin film transistor, an insulating layer covering the thin film transistor, an electrode which is electrically connected to the thin film transistor through a contact hole formed on the insulating layer, and a light emitting element formed by interposing a light emitting layer between a first electrode which is electrically connected to the electrode and a second electrode.Type: GrantFiled: March 15, 2005Date of Patent: September 9, 2008Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Masayuki Sakakura, Shuhei Takahashi, Kazuko Ikeda, Tomoya Futamura
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Publication number: 20080211401Abstract: An electron emission device including a lower electrode on a near side to a substrate and an upper electrode on a far side to the substrate and an insulator layer and an electron supply layer stacked between the lower electrode and the upper electrode and emitting an electron from the upper electrode side at the time of applying a voltage between the lower electrode and the upper electrode, which includes an electron emission part provided with an opening formed by an inner wall of a stepped shape in which a thickness of the insulator layer decreases stepwise; and a carbon-containing carbon region which is connected to the upper electrode side and which is brought into contact with the insulator layer and the electron supply layer.Type: ApplicationFiled: November 15, 2005Publication date: September 4, 2008Inventors: Tomonari Nakada, Nobuyasu Negishi, Kazuto Sakemura, Yoshiyuki Okuda, Saburo Aso, Atsushi Watanabe, Takamasa Yoshikawa, Kiyohide Ogasawara
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Publication number: 20080211395Abstract: The invention provides an organic electroluminescence device having an input function, including: an element substrate that has a light-emitting layer sandwiched between a pair of electrodes; a sealing substrate that seals the element substrate; a first detection electrode that is provided at the inner-surface side of the sealing substrate; a second detection electrode that is provided at the outer-surface side of the sealing substrate; the second detection electrode having a detection axis that is not the same as that of the first detection electrode; a dielectric film that is formed on the second detection electrode; and a detection unit that detects a position at which electrostatic capacitance is generated via the dielectric film between the first detection electrode and the second detection electrode.Type: ApplicationFiled: February 12, 2008Publication date: September 4, 2008Applicant: SEIKO EPSON CORPORATIONInventors: Takeshi KOSHIHARA, Sumio UTSUNOMIYA, Takeyoshi USHIKI, Yoichi FUJIKAWA
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Publication number: 20080206925Abstract: A hermetically sealed package includes: a first plate including inside and outside surfaces; a second plate including inside and outside surfaces; frit material disposed on the inside surface of the second plate; and at least one dielectric layer disposed directly or indirectly on at least one of: (i) the inside surface of the first plate at least opposite to the frit material, and (ii) the inside surface of the second plate at least directly or indirectly on the frit material, wherein the frit material forms a hermetic seal against the dielectric layer in response to heating.Type: ApplicationFiled: February 23, 2007Publication date: August 28, 2008Inventors: Dilip Kumar Chatterjee, Kelvin Nguyen
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Patent number: 7417368Abstract: The present invention is directed to color electroluminescent displays comprising a novel sub-pixel structure and method for making the same. The sub-pixel structure has an electroluminescent phosphor, which emits blue light, and a photoluminescent phosphor, which emits at least one other color as a result of absorption of the blue light. The invention is also directed to novel photoluminescent phosphor materials.Type: GrantFiled: October 16, 2003Date of Patent: August 26, 2008Assignee: Ifire Technology Corp.Inventors: Xingwei Wu, Abdul M. Nakua
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Patent number: 7414361Abstract: To provide a light-emitting device in which a partition wall portion and a second electrode are not peeled off and display failure hardly occurs, a method of manufacturing the light-emitting device, and an electronic apparatus comprising the light-emitting device. An area in which a lyophobic portion is not formed is formed on a partition wall other than peripheries of pixel electrodes. In addition, a negative electrode is formed to directly come in contact with the area of the partition wall in which the lyophobic portion is not formed.Type: GrantFiled: February 7, 2005Date of Patent: August 19, 2008Assignee: Seiko Epson CorporationInventor: Ryoichi Nozawa
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Patent number: 7414360Abstract: An organic electroluminescent device including a transparent substrate; transparent electrodes extended in one direction on the substrate; connecting electrodes for current supply formed in a crossing direction of the transparent electrodes, not to overlap the transparent electrodes, on one side of the substrate; scan-electrodes formed on the connecting electrodes; an insulation layer formed to cover a predetermined area of the substrate, the transparent electrodes, the connecting electrodes, and the scan-connecting electrodes except the emission parts of the transparent electrodes and the contact parts of the scan-connecting electrodes, wherein the area (AE) of the emission part, the number (N) of the emission parts formed on a scan line, and the area (AC) of the contact part are determined under the formula of [(AE×N)/100 ?AC]; an organic layer formed on the emission parts of the transparent electrodes; and a scan electrode layer.Type: GrantFiled: September 2, 2004Date of Patent: August 19, 2008Assignee: LG Electronics Inc.Inventors: Kwang-Heum Baik, Jung-Hwan Lee
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Patent number: 7414364Abstract: There is provided a display element capable of efficiently emitting generated light externally and a method of manufacturing the display element, without damaging an organic electroluminescent layer. First, a transparent electrode protection material (11) is deposited on a first holding substrate (10); then organic electroluminescent light-emitting elements (12, 13, 14) are manufactured thereon; and then after sealing and holding with a sealing material (15) and a second holding substrate (16), the first holding substrate (10) and a transparent electrode protection material (11) are removed by etching or the like. According to the present invention, the removal of the first holding substrate (10) enables improvement of the emission rate generated in the electroluminescent layer (13), and improvement of brightness and contrast in the display element.Type: GrantFiled: November 1, 2004Date of Patent: August 19, 2008Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Tetsuo Tsutsui, Kazuhiro Sumioka
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Patent number: 7411343Abstract: An electroluminescent device is provided. The device has a stacked structure in which an electric field enhancing layer is present between a dielectric layer, which contacts an inorganic light-emitting layer, and an electrode. In the device, electrons are additionally supplied by the electric field enhancing layer to increase electroluminescent efficiency, enabling the device to emit light having desired brightness, and lengthening the life span of the device.Type: GrantFiled: December 15, 2003Date of Patent: August 12, 2008Assignee: Samsung SDI Co., Ltd.Inventor: In-taek Han
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Patent number: 7408297Abstract: A stacked structure (1) includes an electrostriction layer (2) including an electric inductive distortion material and a stress light-emitting layer (3) including a stress light-emitting material. When applying a voltage to the electrostriction layer (2) in the stacked structure (1), the electric inductive distortion material deforms, thereby the electrostriction layer (2) deforms. The deformation of the electrostriction layer (2) causes an external force to act on the stress light-emitting material of the stress light-emitting layer (3), and the stress light-emitting layer (3) emits light, accordingly. That is, by applying the voltage to the stacked structure (1), the stacked structure (1) can emit the light.Type: GrantFiled: March 18, 2003Date of Patent: August 5, 2008Assignees: Japan Science and Technology Agency, National Institute of Advanced Industrial Science and TechnologyInventors: Chao-Nan Xu, Hiroshi Tateyama
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Patent number: 7402947Abstract: An organic light emitting diode consisting of multiple organic layers, disposed between a transparent conducting anode and metallic cathode. The anode is provided with a metal fluoride layer to enhance the overall performance of the device, including higher power efficiency, lower voltage threshold and improved device operation stability.Type: GrantFiled: September 7, 2005Date of Patent: July 22, 2008Assignee: The Hong Kong University of Science and TechnologyInventors: Hoi Sing Kwok, Man Wong, Hua-Jun Peng, Shuang Xie
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Patent number: 7402948Abstract: Not all of light generated in the light emitting layer comprising the organic material are taken out in the desirable direction. For example, light emitted in the lateral direction (the direction parallel to the substrate face) is not taken out and therefore is a loss. An object of the present invention is to provide a light emitting device structured so as to increase the amount of light which is taken out in a certain direction after emitted from a light emitting element, as well as a method of manufacturing this light emitting device. In the present invention, an upper end portion of an insulating material 19 that covers an end portion of a first electrode 18 is formed to have a curved surface having a radius of curvature, a second electrode 23a is formed to have a slant face as going from its center portion toward its end portion along the curved surface.Type: GrantFiled: April 24, 2003Date of Patent: July 22, 2008Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Satoshi Seo, Hideaki Kuwabara
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Patent number: 7402945Abstract: Although an ink jet method known as a method of selectively forming a film of a high molecular species organic compound, can coat to divide an organic compound for emitting three kinds (R, G, B) of light in one step, film forming accuracy is poor, it is difficult to control the method and therefore, uniformity is not achieved and the constitution is liable to disperse. In contrast thereto, according to the invention, a film comprising a high molecular species material is formed over an entire face of a lower electrode connected to a thin film transistor by a coating method and thereafter, the film comprising the high molecular species material is etched by etching by plasma to thereby enable to selectively form a high molecular species material layer. Further, the organic compound layer is constituted by a material for carrying out luminescence of white color or luminescence of single color and combined with a color changing layer or a coloring layer to thereby realize full color formation.Type: GrantFiled: March 4, 2003Date of Patent: July 22, 2008Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Masakazu Murakami, Satoshi Seo
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Publication number: 20080169757Abstract: The invention provides a top emitting organic electroluminescent display comprising a substrate including a display area. A conductive layer is disposed on the substrate, electrically connecting the substrate. A reflective layer is disposed on the display region of the substrate. A dielectric layer is formed on the conductive layer, the reflective layer and the substrate, with a via exposing the conductive layer. A transparent electrode layer is disposed on the dielectric layer, electrically connecting the conductive layer through the via. An organic electroluminescent layer corresponding to the display region is disposed on the transparent electrode layer.Type: ApplicationFiled: January 16, 2008Publication date: July 17, 2008Inventors: Shih-Chang Chang, Chang-Ho Tseng, Shih-Pin Wang
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Publication number: 20080164812Abstract: Systems for displaying images. A representative system incorporates an electroluminescent diode that comprises a substrate, an anode formed on the substrate, electroluminescent layers formed on the anode, a cathode formed on the electroluminescent layers, and a wavelength narrowing mirror structure formed directly on the cathode. Particularly, the wavelength narrowing mirror structure comprises a plurality of metal layers, and two adjacent metal layers separated by a dielectric layer.Type: ApplicationFiled: January 8, 2007Publication date: July 10, 2008Applicants: TPO DISPLAYS CORP., NATIONAL TAIWAN UNIVERSITYInventors: Yaw-Ming Tsai, Liang-Jyi Chen, Po-Yen Lu, Chung-Chih Wu, Yin-Jui Lu, Chun-Liang Lin
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Patent number: 7397183Abstract: A composite article comprises a substrate having at least a substrate surface and a graded-composition coating disposed on a substrate surface. The composition of the coating material varies substantially continuously across its thickness. The coating reduces the transmission rates of oxygen, water vapor, and other chemical species through the substrate such that the composite article can be used effectively as a diffusion barrier to protect chemically sensitive devices or materials. An organic light-emitting device incorporates such a composite article to provide an extended life thereto.Type: GrantFiled: April 6, 2006Date of Patent: July 8, 2008Assignee: General Electric CompanyInventors: Marc Schaepkens, Kevin Warner Flanagan
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Patent number: 7397180Abstract: It is considered that in the fabricating steps of a TFT substrate, a color filter layer is prepared at the same alignment accuracy. However, since the heat resistance temperature is about 200° C., it could not withstand the process temperature of about 450° C. in the TFT.Type: GrantFiled: August 17, 2005Date of Patent: July 8, 2008Inventor: Shunpei Yamazaki
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Patent number: 7391152Abstract: The present invention discloses an inorganic thin layer which is composed of an inorganic composite containing at least two kinds of inorganic materials and shows excellent moisture and oxygen proof, an organic electroluminescence device including the inorganic thin layer as a passivation layer, and a fabrication method thereof.Type: GrantFiled: August 23, 2004Date of Patent: June 24, 2008Assignee: Korea Institute of Science and TechnologyInventors: Byeong-Kwon Ju, Jai-Kyeong Kim, Young-Chul Kim, Hoon Kim, Kwang-Ho Kim, Joo-Won Lee
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Publication number: 20080143925Abstract: A lamp and liquid crystal display device having the same include a tube which forms a light emitting space, an electrode main body disposed in an end part of the tube, a dielectric layer formed on the electrode main body and a surface metal layer formed on the dielectric layer. The electrode main body and the dielectric layer form a capacitor which prevents a current imbalance when a plurality of the lamps are connected in electrical parallel to each other and are driven by a transformer.Type: ApplicationFiled: November 29, 2007Publication date: June 19, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun-jin KIM, Seok-hyun NAM, Sang-hyuck YOON, Chi-o CHO, Kyung-min KIM, Min-jeong WANG
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Publication number: 20080136314Abstract: We disclose a highly transmissive electroluminescent lamp, where the lamp has a front electrode electrically connected to a first clear conductive layer of PDOT or functionally similar material, a phosphor layer and a dielectric layer. The phosphor layer contains nano-particles of phosphor, where the nano-particles have a size less than about 100 nm. The dielectric layer contains nano-particles of a dielectric, where these nano-particles having a size less than about 100 nm. There is a second clear conductive layer of PDOT, and a back electrode electrically connected to the second clear conductive layer, for energizing the lamp. In other embodiments, the particles in the phosphor layer may have sizes larger than 100 nm, while still achieving the effect of substantial transparency of the lamp.Type: ApplicationFiled: December 12, 2006Publication date: June 12, 2008Inventors: Thomas L. Brown, Manuel R. Adame
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Publication number: 20080116794Abstract: An electron emission device includes a substrate, a cathode electrode located on the substrate and having a first opening, the cathode electrode including a material that substantially blocks ultraviolet rays, an electron emission region that is located in the first opening and adapted to emit electrons, a gate electrode that is electrically insulated from the cathode electrode, the gate electrode including a material that substantially blocks ultraviolet rays, and a plurality of insulation layers located between the cathode and gate electrodes. The plurality of insulation layers includes first and second insulation layers adjacent to each other. The first insulation layer has a first etching rate that is different from a second etching rate of the second insulation layer.Type: ApplicationFiled: October 3, 2007Publication date: May 22, 2008Inventors: Jin-Hui Cho, Sang-Jo Lee, Sam-Il Han, Jin-Ho Bin, Sang-Ho Jeon, Su-Bong Hong
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Publication number: 20080102310Abstract: The present invention relates to organic light emitting devices (OLEDs), and more specifically to OLEDS that emit light using a combination of fluorescent emitters and phosphorescent emitters for the efficient utilization of all of the electrically generated excitons.Type: ApplicationFiled: October 27, 2006Publication date: May 1, 2008Inventors: Mark E. Thompson, Stephen Forrest
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Publication number: 20080100201Abstract: An organic electroluminescence (OEL) device, having a polymeric substrate, a plurality of light enhanced structures, an anti-oxidation layer, a first electrode, an organic light emitting layer, a second electrode and a protective layer, is provided. The polymeric substrate has a first surface and a second surface. The light enhanced structures are disposed on the first surface. The anti-oxidation layer is disposed on the second surface. The first electrode is disposed on the anti-oxidation layer. The organic light emitting layer is disposed on the first electrode. The second electrode is disposed on the organic light emitting layer. The protective layer is disposed on the second electrode. Since the OEL device has light enhanced structures, not only light efficiency can be improved but also surface scattering is reduced. Moreover, a method of fabricating an OEL device is also provided to make the OEL device in mass production for lowering the production cost.Type: ApplicationFiled: October 31, 2006Publication date: May 1, 2008Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: An-Chi Wei, Bo-Ru Yang, Han-Ping Shieh
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Patent number: 7365487Abstract: The organic electroluminescence display apparatus of the present invention comprises a first and second substrates, the former being coated with banks for separating pixels, a lower electrode, organic light-emitting layer and upper electrode of a transparent material in this order, and the latter being coated with a color filter and electroconductive shadow pattern, wherein the organic light-emitting layer surrounded by the banks for separating pixels faces the color filter, and the first and second substrates face each other in such a way that the upper electrode over the banks for separating pixels is electrically connected to the electroconductive shadow pattern. This structure connects at least one of the upper electrode and electroconductive shadow pattern to a power supply point, to control ununiform emitted light brightness which may result from voltage drop at the upper transparent electrode.Type: GrantFiled: November 22, 2004Date of Patent: April 29, 2008Assignee: Hitachi Displays, Ltd.Inventors: Hiroyasu Matsuura, Shingo Ishihara, Keiji Takanosu, Eiji Matsuzaki
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Patent number: 7361413Abstract: A luminescent device comprises an electroluminescent phosphor in operative contact with a light-emitting material wherein excitation of the electroluminescent phosphor by an alternating current electrical field causes the emission of light by the light-emitting material. Methods of making the device and using it in an electroluminescent display are also described.Type: GrantFiled: January 28, 2003Date of Patent: April 22, 2008Assignee: Lumimove, Inc.Inventor: Patrick J. Kinlen
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Publication number: 20080088231Abstract: An electroluminescent device may be provided that includes a substrate, a first electrode provided on the substrate, a light emitting layer provided on the first electrode, and a first metal layer provided on the light emitting layer. An oxide layer may also be provided at an interface of the first metal layer and a conductive particle. Other embodiments as described herein may also be provided.Type: ApplicationFiled: February 2, 2007Publication date: April 17, 2008Inventors: Sang Dae Kim, Jung Hwan Lee, Ho Won Choi
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Publication number: 20080074049Abstract: A individually formed EL module device, named herein as a nixel, adapted to be integrated into a modular electroluminescent display (ELD), is presented. The nixel of the present invention can be in the form of a subpixel, a pixel, or a plurality thereof. The nixel can be made in a variety of shapes, and can be individually tested and sorted according to its mechanical and/or electrical attributes prior to being integrated into an ELD. A customized ELD can be made by selecting nixels of particular characteristics in accordance with ELD application and/or user specifications. Nixels can easily be arranged to form a variety of color patterns on an ELD. A nixel can include a lower electrode layer, a ceramic base layer, a first charge injection layer, a phosphor layer, a second charge injection layer and an upper electrode layer. Nixels can be positioned on a flexible display structure to produce a flexible and scalable ELD.Type: ApplicationFiled: September 26, 2006Publication date: March 27, 2008Inventors: Adrian Kitai, Aris Silzars, Joe K. Cochran, Richard C. Cope
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Publication number: 20080067932Abstract: An organic light emitting display and a method of fabricating the same are disclosed. One embodiment of the organic light emitting display includes a substrate including a pixel region and a cathode-on-driver (COD) region adjacent to the pixel region, a thin film transistor formed on the pixel region of the substrate, and a planarization film formed on an entire surface of the substrate to cover the thin film transistor. The organic light emitting display also includes an organic light emitting diode including a first pixel electrode formed on the planarization film and connected to the thin film transistor, an organic light emitting layer formed on the first pixel electrode, and a second pixel electrode formed on an entire surface of the substrate over the organic light emitting layer. The organic light emitting display further includes a pixel definition layer which is provided between the planarization film and the second pixel electrode.Type: ApplicationFiled: January 5, 2007Publication date: March 20, 2008Inventors: Ji-Yeon Baek, Won-Kyu Choe, Keun-Soo Lee, Dong-Young Sung
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Patent number: 7345421Abstract: First, a plurality of organic EL elements are formed on a substrate. The electron injection electrode of an organic EL element has a stacked layer structure of a metal thin film and a metal oxide film. A sealing agent is provided on the upper portion and outer periphery of the plurality of organic EL elements on the substrate, so as to surround the entire perimeter of the plurality of organic EL elements. A sealing plate is bonded to the upper face side of the sealing agent with a color filter sandwiched therebetween. As the sealing agent, a resin adhesive is used from which a solution extracted in accordance with the SEMI standard G29-1296 after curing has a pH of not less than four nor more than ten. It is preferable that the resin adhesive has a light transmittance of 70% or more on average in the wavelength range of 450 nm to 800 nm, with the variation range of the light transmittance in the wavelength range of 450 nm to 800 nm being not more than ±10% for the average light transmittance.Type: GrantFiled: September 30, 2004Date of Patent: March 18, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Gaku Harada, Hisao Haku
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Patent number: 7339317Abstract: There is provided a light emitting device which enables a color display with good color balance. A triplet compound is used for a light emitting layer of an EL element that emits red color, and a singlet compound is used for a light emitting layer of an EL element that emits green color and a light emitting layer of an EL element that emits blue color. Thus, an operation voltage of the EL element emitting red color may be made the same as the EL element emitting green color and the EL element emitting blue color. Accordingly, the color display with good color balance can be realized.Type: GrantFiled: June 4, 2001Date of Patent: March 4, 2008Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Shunpei Yamazaki
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Patent number: 7339316Abstract: Light-emitting devices and light-emitting displays for realizing bright display by allowing light emitted from an emissive layer to efficiently contribute to a display. Polarization separators are arranged between the emissive layer and a phase plate. In the light of a wavelength range which includes a part or all of a light-emission wavelength range of the emissive layer and is narrower than a visible wavelength range and is directed from the emissive layer side to the polarization separators side, the polarization separators reflect circularly polarized light components which are converted into linearly polarized light that is absorbed by the polarizer due to the operation of the phase plate and transmit the other light.Type: GrantFiled: December 20, 2005Date of Patent: March 4, 2008Assignee: Hitachi, LtdInventors: Masaya Adachi, Yoshiyuki Kaneko, Sukekazu Aratani, Shingo Ishihara
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Publication number: 20080048554Abstract: A white fluorescent lamp is prepared with a substrate and a high voltage circuit. The substrate has a fluorescent layer with silicon quantum dots. The lamp generates a white light by exciting the substrate with the circuit through a spark gap. A photoelectronic conversion is improved and a cost is lowered by using a cheap material as silicon.Type: ApplicationFiled: August 28, 2006Publication date: February 28, 2008Applicant: ATOMIC ENERGY COUNCIL-INSTITUTE OF NUCLEAR ENERGY RESEARCHInventors: Tsun-Neng Yang, Wei-Yang Ma
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Patent number: 7336030Abstract: A pixel structure is provided in which a functional thin film having a uniform thickness can be formed in a pixel region, and an electro-optic device is obtained having superior uniformity of light brightness by the use of the above pixel structure. The functional thin film is formed on a thin film-forming surface surrounded by a partition for defining the pixel region. In this step, since the partition described above is formed of a first partition having a lyophilic surface and a second partition which is provided thereon and which has a lyophobic surface, and the first partition has parts which are not covered with the second partition, a liquid material for forming the functional thin film, which is filled inside the partition, can be formed into a film having a uniform thickness after drying due to the interaction between the lyophilic and the lyophobic properties.Type: GrantFiled: October 1, 2004Date of Patent: February 26, 2008Assignee: Seiko Epson CorporationInventors: Tatsuaki Funamoto, Tomoyuki Ito, Ryoichi Nozawa
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Patent number: 7329985Abstract: A self-light emitting display device with top-emission usually has no film that is capable of light shielding. Therefore, it is necessary to form a light-shielding layer additionally with, which leads the number of processes to increase. In the present invention, plural films selected from a first coloring layer 161, a second coloring layer 162, and a third coloring layer 163 formed on an opposing substrate are laminated to form a light-shielding portion without using a light-shielding mask.Type: GrantFiled: June 30, 2006Date of Patent: February 12, 2008Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Yuugo Goto, Yoshifumi Tanada
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Patent number: 7329987Abstract: To provide an organic electroluminescent device having a sealing structure in which an adhesive layer and a protective substrate are provided on light-emitting elements, the organic electroluminescent device being capable of emitting display light from the protective substrate and of obtaining higher reliability in a peripheral region in which connecting terminals are provided. The organic electroluminescent device of the present invention comprises an element substrate having organic EL elements on one surface thereof and a protective substrate bonded to the element substrate with an adhesive layer that is provided on the organic EL elements interposed therebetween. A separating member is provided between the protective substrate and the element substrate to uniformly maintain the gap between the two substrates.Type: GrantFiled: December 16, 2004Date of Patent: February 12, 2008Assignee: Seiko Epson CorporationInventors: Kozo Shitagami, Kenji Hayashi
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Publication number: 20080029373Abstract: It is to provide an EL sheet and a member for lighting a push-button switch capable of emitting light stably and sufficiently for a long period of time without trouble such as non-light emission phenomena and generation of black dot, even if the EL element is subjected to, for example, a drawing process to form into a three dimensional shape. A laminated EL sheet is formed that comprises a counter electrode layer 15, dielectric layer 14, light-emitting layer 13, transparent electrode layer 11. An adhesive layer 12 made of adhesive having excellent adhesiveness to the electroconductive polymer is disposed between the transparent electrode layer 11 made of an electroconductive polymer and the light-emitting layer 13. As for the adhesives having excellent adhesiveness, polyester, acrylic, cyanoacrylate, polyolefin, ethylene-vinyl acetate or ethylene ethyl acrylate type adhesive is used. The dielectric layer is made of fluoro type, polyester type or acrylic type resin binder.Type: ApplicationFiled: February 16, 2005Publication date: February 7, 2008Applicant: SHIN-ETSU POLYMER CO., LTD.Inventors: Shinji Hotta, Shunichi Yamada
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Patent number: 7327080Abstract: A field emission display comprises an anode comprising a matrix of pixels and a cathode comprising an insulating layer defining a plurality of wells having a conductor therein. A first conductive layer forms a plurality of conductive pads, each of the conductive pads corresponding to one of the wells. A plurality of nanostructures are electrically coupled to the conductive pads. A second conductive layer is formed over the insulating layer and provides a plurality of gate electrodes. When a potential between the conductive pads and gate electrodes exceeds a threshold voltage, the nanostructures emit electrons that impinge on the pixels.Type: GrantFiled: October 27, 2004Date of Patent: February 5, 2008Inventors: Frank J. DiSanto, Denis A. Krusos, Sergey L. Shokhor, Alexander Kastalsky, Anthony J. Campisi