Patents Assigned to Institute of Materials Research & Engineering
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Patent number: 8344360Abstract: An encapsulation for an organic light emitting diode (OLED) device is disclosed. The encapsulation includes a sealing dam surrounding the cell region of the OLED device to support a cap. Spacer particles are randomly located in the cell region to prevent the cap from contacting the active components, thereby protecting them from damage. The sealing dam provides a sealing region between the edge of the cap and dam in which an adhesive is applied to seal the OLED device. The use of the sealing dam advantageously enables devices to be formed with narrower sealing widths.Type: GrantFiled: September 28, 2001Date of Patent: January 1, 2013Assignees: Osram Opto Semiconductor GmbH, Institute of Materials Research and EngineeringInventors: Mark Auch, Ewald Guenther, Lim Shuang Fang, Chua Soo Jin, Low Bee Ling
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Patent number: 7394153Abstract: An encapsulation for a device is disclosed. Spacer particles are randomly located in the device region to prevent a cap mounted on the substrate from contacting the active components, thereby protecting them from damage. The spacer particles are fixed to one side of the substrate to prevent any movement.Type: GrantFiled: November 20, 2001Date of Patent: July 1, 2008Assignees: Osram Opto Semiconductors GmbH, Institute of Materials Research and EngineeringInventors: Mark Auch, Ewald Guenther, Lim Shuang Fang, Chua Soo Jin
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Patent number: 7297348Abstract: A drug delivery system that includes a hydrogel formed from cyclodextrin and an amphiphilic copolymer that includes an A polymer block comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate), and a therapeutically effective amount of at least one therapeutic agent intimately contained within the hydrogel. In one preferred embodiment of the invention, the A polymer block is poly(ethylene oxide) (PEO) and the B polymer block is poly[(R)-3-hydroxybutyrate] (PHB), and the copolymer is the triblock ABA copolymer PEO-PHB-PEO. A method of synthesizing the amphiphilic triblock copolymer is also provided.Type: GrantFiled: July 18, 2003Date of Patent: November 20, 2007Assignees: Omeros Corporation, Institute of Materials Research and EngineeringInventors: Jun Li, Xu Li, Xiping Ni, Kam W. Leong
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Patent number: 7262441Abstract: An encapsulation for an electrical device is disclosed. The encapsulation comprises plastic substrates which are laminated onto the surface of the electrical device. The use of laminated plastics is particularly useful for flexible electrical devices such as organic LEDs.Type: GrantFiled: June 29, 2005Date of Patent: August 28, 2007Assignees: Osram Opto Semiconductors GmbH & Co. OHG, Institute of Materials Research and EngineeringInventors: Ewald Karl Michael Guenther, Wei Wang, Soo Jin Chua
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Publication number: 20070190682Abstract: An OLED device includes pillars, wherein the pillars serve to pattern a conductive layer during deposition. The profile of the pillars covers the edges of at least one functional layer to protect it from exposure to potentially deleterious substances.Type: ApplicationFiled: April 20, 2007Publication date: August 16, 2007Applicants: OSRAM OPTO SEMICONDUCTORS GMBH, INSTITUTE OF MATERIALS RESEARCH AND ENGINEERINGInventors: Mark Auch, Ewald Guenther, Soo Jin Chua
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Patent number: 7255823Abstract: An encapsulation for an organic light emitting diode (OLED) (201) device is disclosed. The encapsulation includes a sealing dam (280) surrounding the cell region of the OLED device to support a cap. The sealing dam provides a sealing region between the edge of the cap and dam in which an adhesive is applied to seal the OLED device. The use of the sealing dam advantageously enables devices to be formed with narrower sealing widths.Type: GrantFiled: September 6, 2000Date of Patent: August 14, 2007Assignees: Institute of Materials Research and Engineering, Osram Opto Semiconductor GmbHInventors: Ewald Karl Michael Guenther, Mark Dai Joong Auch
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Patent number: 7221093Abstract: An OLED device having pillars, wherein the pillars serve to pattern a conductive layer during deposition. The profile of the pillars covers the edges of at least one functional layer to protect it from exposure to potentially deleterious substances.Type: GrantFiled: June 10, 2002Date of Patent: May 22, 2007Assignees: Institute of Materials Research and Engineering, Osram Opto Semiconductor GmbHInventors: Mark Auch, Ewald Guenther, Soo Jin Chua
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Patent number: 7166007Abstract: A method of encapsulating a device is disclosed. Spacer particles are randomly located in the device region to prevent a cap mounted on the substrate from contacting the active components, thereby protecting them from damage. The spacer particles are fixed to one side of the substrate to prevent any movement.Type: GrantFiled: November 4, 2004Date of Patent: January 23, 2007Assignees: Osram Opto Semiconductors GmbH, Institute of Materials Research and EngineeringInventors: Mark Auch, Ewald Guenther, Lim Shuang Fang, Chua Soo Jin
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Patent number: 7098591Abstract: A transparent conductive material in which the desired resistivity is achieved with a high carrier concentration is provided for use in an OLED. In one embodiment, the transparent conductive material comprises indium-tin-oxide. (ITO) with a high carrier concentration of at least at least 7×1020 cm?3. The high carrier concentration improved the performance of the OLED device.Type: GrantFiled: December 17, 1999Date of Patent: August 29, 2006Assignees: Osram Opto Semiconductors GmbH, Institute of Materials Research and EngineeringInventors: Furong Zhu, Ewald Karl Michael Guenther, Soo Jin Chua
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Patent number: 6949825Abstract: An encapsulation for an electrical device is disclosed. The encapsulation comprises plastic substrates which are laminated onto the surface of the electrical device. The use of laminated plastics is particularly useful for flexible electrical devices such as organic LEDs.Type: GrantFiled: July 9, 1999Date of Patent: September 27, 2005Assignees: Osram Opto Semiconductor GmbH & Co. OHG, Institute of Materials Research and EngineeringInventors: Ewald Karl Michael Guenther, Wei Wang, Soo Jin Chua
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Patent number: 6933537Abstract: Disclosed is a technique for increasing the shelf life of devices, such as OLED which requires hermetic sealing from moisture and oxygen with out increasing the bonding width. In one embodiment, the permeation path of moisture or oxygen is increased without increasing the bonding width. This is achieved by using a grooved interface between the cap and substrate on which the components of the device are formed. The grooved interface can comprise various geometric shapes.Type: GrantFiled: September 28, 2001Date of Patent: August 23, 2005Assignees: Osram Opto Semiconductors GmbH, Institute of Materials Research & EngineeringInventors: Low Hong Yee, Ewald Guenther, Chua Soo Jin
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Publication number: 20050095861Abstract: The GaN single-crystal substrate 11 in accordance with the present invention has a polished surface subjected to heat treatment for at least 10 minutes at a substrate temperature of at least 1020° C. in a mixed gas atmosphere containing at least an NH3 gas. As a consequence, an atomic rearrangement is effected in the surface of the substrate 11 in which a large number of minute defects are formed by polishing, so as to flatten the surface of the substrate 11. Therefore, the surface of an epitaxial layer 12 formed on the substrate 11 can be made flat.Type: ApplicationFiled: November 29, 2004Publication date: May 5, 2005Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., Institute of Materials Research & EngineeringInventors: Masaki Ueno, Eiryo Takasuka, Soo-Jin Chua, Peng Chen
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Patent number: 6861271Abstract: Indium Nitride (InN) and Indium-rich Indium Gallium Nitride (InGaN) quantum dots embedded in single and multiple InxGa1-xN/InyGa1-yN quantum wells (QWs) are formed by using TMIn and/or Triethylindium (TEIn), Ethyldimethylindium (EDMIn) as antisurfactant during MOCVD growth, wherein the photoluminescence wavelength from these dots ranges from 480 nm to 530 nm. Controlled amounts of TMIn and/or other Indium precursors are important in triggering the formation of dislocation-free QDs, as are the subsequent flows of ammonia and TMIn. This method can be readily used for the growth of the active layers of blue and green light emitting diodes (LEDs).Type: GrantFiled: August 5, 2003Date of Patent: March 1, 2005Assignees: The National University of Singapore, Institute of Materials Research & EngineeringInventors: Soo Jin Chua, Peng Li, Maosheng Hao, Ji Zhang
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Patent number: 6841274Abstract: The GaN single-crystal substrate 11 in accordance with the present invention has a polished surface subjected to heat treatment for at least 10 minutes at a substrate temperature of at least 1020° C. in a mixed gas atmosphere containing at least an NH3 gas. As a consequence, an atomic rearrangement is effected in the surface of the substrate 11 in which a large number of minute defects are formed by polishing, so as to flatten the surface of the substrate 11. Therefore, the surface of an epitaxial layer 12 formed on the substrate 11 can be made flat.Type: GrantFiled: May 8, 2003Date of Patent: January 11, 2005Assignees: Sumitomo Electric Industries, Ltd., Institute of Materials Research & EngineeringInventors: Masaki Ueno, Eiryo Takasuka, Soo-Jin Chua, Peng Chen
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Patent number: 6803245Abstract: An encapsulation procedure for an organic light emitting diode (OLED) device, especially for thin and therefore flexible substrates, is disclosed. The device is sealed hermetically against environmental and mechanical damage. The procedure includes the use of a thin cover lid holder and a substrate holder that are designed to handle thin substrates without damaging them. Thin substrates ensure sufficient mechanical flexibility for the OLED devices, and provides an overall thickness of less than 0.5 mm.Type: GrantFiled: September 28, 2001Date of Patent: October 12, 2004Assignees: Osram Opto Semiconductors GmbH, Institute of Materials Research and EngineeringInventors: Mark Auch, Ewald Guenther, Chua Soo Jin
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Publication number: 20040197313Abstract: The invention relates to a chimeric promoter construct useful for neuronal cell specific gene expression. The invention provides a recombinant nucleic acid molecule that comprises a neuronal cell specific promoter such as platelet-derived growth factor &bgr;-chain promoter, operably linked to a heterologous enhancer which enhances the transcriptional activity of the promoter, such as cytomegalovirus immediate early gene enhancer. The promoter construct according to the invention can increase and prolong gene expression in neuronal cells and may be advantageously used in gene therapy of neuronal disorders.Type: ApplicationFiled: April 2, 2003Publication date: October 7, 2004Applicant: Institute of Materials Research and EngineeringInventors: Shu Wang, Beihui Liu, Xu Wang
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Patent number: 6776050Abstract: A support for facilitating the bending test of flexible substrates is disclosed. The support includes a plastic or adhesive plastic applied on the substrate to keep the shards together after breakage, thereby eliminating the process of collecting the shards and fitting them back together for failure analysis.Type: GrantFiled: September 28, 2001Date of Patent: August 17, 2004Assignees: Osrano Opto Semiconductors GmbH, Institute of Materials Research and EngineeringInventors: Mark Auch, Ewald Guenther, Chua Soo Jin, Chen Zhong
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Patent number: 6737753Abstract: A barrier stack for sealing devices is described. The barrier stack includes at least first and second base layers bonded together with a high barrier adhesive. A base layer includes a flexible support coated on at least one major surface with a barrier layer. The adhesive advantageously seals defects, such as pinholes in the barrier layer, thus improving the barrier properties.Type: GrantFiled: September 28, 2001Date of Patent: May 18, 2004Assignees: Osram Opto Semiconductor GmbH, Institute of Materials Research and EngineeringInventors: Senthil Kumar, Chua Soo Jin, Mark Auch, Ewald Guenther
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Publication number: 20040072799Abstract: A drug delivery system that includes a hydrogel formed from cyclodextrin and an amphiphilic copolymer that includes an A polymer block comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate), and a therapeutically effective amount of at least one therapeutic agent intimately contained within the hydrogel. In one preferred embodiment of the invention, the A polymer block is poly(ethylene oxide) (PEO) and the B polymer block is poly[(R)-3-hydroxybutyrate] (PHB), and the copolymer is the triblock ABA copolymer PEO-PHB-PEO. A method of synthesizing the amphiphilic triblock copolymer is also provided.Type: ApplicationFiled: July 18, 2003Publication date: April 15, 2004Applicants: Omeros Corporation, Institute of Materials Research and EngineeringInventors: Jun Li, Xu Li, Xiping Ni, Kam W. Leong
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Publication number: 20040023427Abstract: Indium Nitride (InN) and Indium-rich Indium Gallium Nitride (InGaN) quantum dots embedded in single and multiple InxGa1−xN/InyGa1−yN quantum wells (QWs) are formed by using TMIn and/or Triethylindium (TEIn), Ethyldimethylindium (EDMIn) as antisurfactant during MOCVD growth, wherein the photoluminescence wavelength from these dots ranges from 480 nm to 530 nm. Controlled amounts of TMIn and/or other Indium precursors are important in triggering the formation of dislocation-free QDs, as are the subsequent flows of ammonia and TMIn. This method can be readily used for the growth of the active layers of blue and green light emitting diodes (LEDs).Type: ApplicationFiled: August 5, 2003Publication date: February 5, 2004Applicants: UNIVERSITY OF SINGAPORE, INSTITUTE OF MATERIALS RESEARCH & ENGINEERINGInventors: Soo Jin Chua, Peng Li, Maosheng Hao, Ji Zhang