Patents by Inventor Kunizo Ogoshi
Kunizo Ogoshi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7914355Abstract: First electrodes partially configuring light-emitting elements are patterned in the form of stripes on a first major surface of a transparent substrate. Next, piezoelectric elements functioning a SAW touch sensor are formed on a second major surface of the transparent substrate. Next, the light-emitting elements forming step of forming light-emitting elements on the first electrodes which are patterned in advance is sequentially executed. After the formation of the piezoelectric elements, since the step of forming the light-emitting elements is executed, the light-emitting elements can be prevented from being damaged by receiving heat in the formation of the piezoelectric elements.Type: GrantFiled: February 8, 2006Date of Patent: March 29, 2011Assignees: Tohoku Pioneer Corporation, Fujitsu Limited, Fujitsu Component LimitedInventors: Fumihiko Nakazawa, Takashi Katsuki, Yuji Takahashi, Satoshi Sato, Satoshi Sasaki, Tamotsu Watanabe, Kunizo Ogoshi, Michiko Endo
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Patent number: 7745987Abstract: An organic electroluminescent display device includes organic electroluminescent films, each containing organic electroluminescent materials and sandwiched by a pair of electrodes, each forming a plurality of light-emitting elements above a substrate. Each pixel of the display device is composed of two different colors light-emitting elements, and the chromaticity of each color is controlled by changing the concentration of organic electroluminescent materials or by adding foreign materials thereto. For example, if the chromaticity of the red light-emitting element is set to a value shifted toward green side, various colors including white can be produced by mixing this red with blue of the blue light-emitting element. Then, the organic electroluminescent display device can produce high-quality quasi-color images by mixing two colors of which chromaticity values are properly controlled. By virtue of a two-color structure, the aperture ratio becomes high and the manufacturing process becomes simple.Type: GrantFiled: July 17, 2003Date of Patent: June 29, 2010Assignee: Tohoku Pioneer CorporationInventors: Isamu Ohshita, Teruichi Watanabe, Gen Suzuki, Kunizo Ogoshi, Teruo Tohma
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Publication number: 20090156083Abstract: First electrodes partially configuring light-emitting elements are patterned in the form of stripes on a first major surface of a transparent substrate. After the step of forming the first electrodes, piezoelectric elements functioning a SAW touch sensor is formed on a second major surface of the transparent substrate. Furthermore, after the step of forming the piezoelectric elements, the light-emitting elements forming step of forming light-emitting elements on the first electrodes which are patterned in advance is sequentially executed. Since the first electrodes are formed in the form of stripes, the piezoelectric elements can be prevented from being damaged by an etching solution used at this time. After the formation of the piezoelectric elements, since the step of forming the light-emitting elements is executed, the light-emitting elements can be prevented from being damaged by receiving heat in the formation of the piezoelectric elements.Type: ApplicationFiled: February 8, 2006Publication date: June 18, 2009Applicants: TOHOKU PIONEER CORPORATION, FUJITSU LIMITED, FUJITSU COMPONENT LIMITEDInventors: Fumihiko Nakazawa, Takashi Katsuki, Yuji Takahashi, Satoshi Sato, Satoshi Sasaki, Tamotsu Watanabe, Kunizo Ogoshi, Michiko Endo
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Patent number: 7247982Abstract: There is provided an organic EL display device comprising: an underlying layer, including at least one layer formed of organic materials, formed on a substrate; organic EL elements formed thereon; and each leading electrode from the organic EL element for an electrical interconnection to an electrode of an interconnection object. In the display device, each connecting region is formed by removing the layers formed of organic materials, of the underlying layer, at a location of a thermocompression bonding for the electrical interconnection. This enables a reliable electrical interconnection between the leading electrode and the electrode of the interconnection object, thereby allowing a good display performance of each organic EL element to be kept.Type: GrantFiled: November 6, 2003Date of Patent: July 24, 2007Assignee: Tohoku Pioneer CorporationInventors: Isamu Ohshita, Teruichi Watanabe, Kunizo Ogoshi
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Patent number: 7088317Abstract: An aging method applied to a display apparatus having light emitting devices arrayed, includes the steps of: setting integral driving time for the light emitting devices based on a property of luminance deterioration of the light emitting devices relative to the integral driving time so that the lowering of luminance per unit time is not larger than a set value; and driving and aging the light emitting devices only for the set integral driving time.Type: GrantFiled: September 18, 2002Date of Patent: August 8, 2006Assignee: Tohoku Pioneer CorporationInventors: Isamu Ohshita, Teruichi Watanabe, Kunizo Ogoshi
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Patent number: 7038393Abstract: A drive device for a light-emitting display panel, having the more extended light-emitting life of an EL element, is provided. Drive switches SX1 to SXn select a reverse direction voltage ?V immediately after starting of scanning to supply the voltage ?V to all of EL elements in a scanning state. Subsequently, through the switches SX1 to SXn, constant current sources I1 to In are connected to data lines to be controlled for light emitting, and, a forward voltage +V1 (a voltage equal to or smaller than a light-emitting threshold one) is applied to data lines which do not contribute to light emitting. Thereby, the forward voltage is applied to the EL elements in a scanning state.Type: GrantFiled: March 15, 2004Date of Patent: May 2, 2006Assignee: Tohoku Pioneer CorporationInventors: Masaki Murakata, Toshinao Yuki, Kunizo Ogoshi
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Publication number: 20040189560Abstract: A drive device for a light-emitting display panel, having the more extended light-emitting life of an EL element, is provided. Drive switches SX1 to SXn select a reverse direction voltage −V immediately after starting of scanning to supply the voltage −V to all of EL elements in a scanning state. Subsequently, through the switches SX1 to SXn, constant current sources I1 to In are connected to data lines to be controlled for light emitting, and, a forward voltage +V1 (a voltage equal to or smaller than a light-emitting threshold one) is applied to data lines which do not contribute to light emitting. Thereby, the forward voltage is applied to the EL elements in a scanning state.Type: ApplicationFiled: March 15, 2004Publication date: September 30, 2004Applicant: TOHOKU PIONEER CORPORATIONInventors: Masaki Murakata, Toshinao Yuki, Kunizo Ogoshi
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Publication number: 20040090401Abstract: There is provided an organic EL display device comprising: an underlying layer, including at least one layer formed of organic materials, formed on a substrate; organic EL elements formed thereon; and each leading electrode from the organic EL element for an electrical interconnection to an electrode of an interconnection object. In the display device, each connecting region is formed by removing the layers formed of organic materials, of the underlying layer, at a location of a thermocompression bonding for the electrical interconnection. This enables a reliable electrical interconnection between the leading electrode and the electrode of the interconnection object, thereby allowing a good display performance of each organic EL element to be kept.Type: ApplicationFiled: November 6, 2003Publication date: May 13, 2004Applicant: Tohoku Pioneer CorporationInventors: Isamu Ohshita, Teruichi Watanabe, Kunizo Ogoshi
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Publication number: 20040043525Abstract: A method for forming a protection film capable of effectively sealing an organic EL device mounted on a surface of a substrate is provided, for example.Type: ApplicationFiled: August 22, 2003Publication date: March 4, 2004Applicant: TOHOKU PIONEER CORPORATIONInventors: Hiroshi Ohata, Kunizo Ogoshi, Masami Kimura
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Publication number: 20040012330Abstract: An organic electoroluminescent display device includes organic electroluminescent films, each containing organic electroluminescent materials and sandwiched by a pair of electrodes, each forming a plurality of light-emitting elements above a substrate. Each pixel of the display device is composed of two different colors light-emitting elements, and the chromaticity of each color is controlled by changing the concentration of organic electroluminescent materials or by adding foreign materials the reto. For example, if the chromaticity of the red light-emitting element is set to a value shifted toward green side, various colors including white can be produced by mixing this red with blue of the blue light-emitting element. Then, the organic electroluminescent display device can produce high-quality quasi-color images by mixing two colors of which chromaticity values are properly controlled. By virtue of a two-color structure, the aperture ratio becomes high and the manufacturing process becomes simple.Type: ApplicationFiled: July 17, 2003Publication date: January 22, 2004Applicant: Tohoku Pioneer CorporationInventors: Isamu Ohshita, Teruichi Watanabe, Gen Suzuki, Kunizo Ogoshi, Teruo Tohma
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Publication number: 20030184503Abstract: An aging method applied to a display apparatus having light emitting devices arrayed, includes the steps of: setting integral driving time for the light emitting devices based on a property of luminance deterioration of the light emitting devices relative to the integral driving time so that the lowering of luminance per unit time is not larger than a set value; and driving and aging the light emitting devices only for the set integral driving time.Type: ApplicationFiled: September 18, 2002Publication date: October 2, 2003Applicant: TOHOKU PIONEER CORPORATIONInventors: Isamu Ohshita, Teruichi Watanabe, Kunizo Ogoshi
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Patent number: 6280910Abstract: An optical disc is prepared by the steps of coating a positive photoresist comprising a photosensitive material and a base resin, satisfying a value of A in a formula A=(a1−a3) m10 and a value of B in a formula B=(a2m20+a3m10), being constant, is in a range of B value <0.3 on a glass substrate to form a resist film, forming a pit pattern through a light exposure to the resist film, developing the resist film after the light exposure to form a resist original, effecting a plating treatment to the resist original to form a stamper through an electrocasting treatment, forming a replica disc through an injection molding process by utilizing the stamper, forming a reflection film on the replica disc, and forming an overcoat layer on the reflection film.Type: GrantFiled: April 11, 2000Date of Patent: August 28, 2001Assignee: Pioneer Electronic CorporationInventors: Tetsuya Iida, Takanobu Higuchi, Hironao Sasaki, Kunizo Ogoshi
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Patent number: 5171392Abstract: An optical information record carrier (optical disk, conventionally) has multiple reflective surfaces, each carrying separate information and each readable by an optical beam directed from the same side of the record carrier. The top most reflective surface reflects light of a first waveband and passes light of a second waveband. The next top most reflective layer reflects light within at least part of the second waveband. The record carrier is formed by producing a first reflective layer having a first pit pattern in the surface of a transparent substrate, pressing said first substrate/layer combination to a transparent stamper having a second pit pattern, with a radiation hardening liquid resin therebetween, irradiating the resin by applying radiation to said resin through said stamper, peeling off said stamper, applying a second reflective layer to said hardened resin surface opposite the surface in contact with said first reflective layer, and applying a protective layer to said second reflective layer.Type: GrantFiled: January 25, 1991Date of Patent: December 15, 1992Assignee: Pioneer Electronic CorporationInventors: Tetsuya Iida, Takanobu Higuchi, Kunizo Ogoshi, Shinichi Yokozeki
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Patent number: 5126996Abstract: An optical information record carrier (optical disk, conventionally) has multiple reflective surfaces, each carrying separate information and each readable by an optical beam directed from the same side of the record carrier. The top most reflective surface reflects light of a first waveband and passes light of a second waveband. The next top most reflective layer reflects light within at least part of the second waveband. The record carrier is formed by producing a first reflective layer having a first pit pattern in the surface of a transparent substrate, pressing said first subtrate/layer combination to a transparent stamper having a second pit pattern, with a radiation hardening liquid resin therebetween, irradiating the resin by applying radiation to said resin through said stamper, peeling off said stamper, applying a second reflective layer to said hardened resin surface opposite the surface in contact with said first reflective layer, and applying a protective layer to said second reflective layer.Type: GrantFiled: July 20, 1989Date of Patent: June 30, 1992Assignee: Pioneer Electronic CorporationInventors: Tetsuya Iida, Takanobu Higuchi, Kunizo Ogoshi, Shinichi Yokozeki