Patents by Inventor Yasushi Karasawa
Yasushi Karasawa 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: 8684549Abstract: An illumination device includes: a substrate; a first transparent electrode covering approximately an entire surface of a display region of the substrate; a second transparent electrode which overlaps with the first transparent electrode when seen in plan view and covers approximately the entire surface of the display region; and a plurality of island shaped light emitting elements disposed between the first transparent electrode and the second transparent electrode. The first and second transparent electrodes are formed as single continuous films.Type: GrantFiled: June 18, 2012Date of Patent: April 1, 2014Assignee: Seiko Epson CorporationInventors: Norio Koma, Kenji Tanase, Yasushi Karasawa, Tadayoshi Ikehara
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Publication number: 20120256207Abstract: An illumination device includes: a substrate; a first transparent electrode covering approximately an entire surface of a display region of the substrate; a second transparent electrode which overlaps with the first transparent electrode when seen in plan view and covers approximately the entire surface of the display region; and a plurality of island shaped light emitting elements disposed between the first transparent electrode and the second transparent electrode. The first and second transparent electrodes are formed as single continuous films.Type: ApplicationFiled: June 18, 2012Publication date: October 11, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Norio KOMA, Kenji TANASE, Yasushi KARASAWA, Tadayoshi IKEHARA
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Patent number: 8220943Abstract: An illumination device includes: a substrate; a first transparent electrode covering approximately an entire surface of a display region of the substrate; a second transparent electrode which overlaps with the first transparent electrode when seen in plan view and covers approximately the entire surface of the display region; and a plurality of island shaped light emitting elements disposed between the first transparent electrode and the second transparent electrode. The first and second transparent electrodes are formed as single continuous films.Type: GrantFiled: March 3, 2010Date of Patent: July 17, 2012Assignee: Seiko Epson CorporationInventors: Norio Koma, Kenji Tanase, Yasushi Karasawa, Tadayoshi Ikehara
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Publication number: 20100231825Abstract: An illumination apparatus includes: a substrate; reflective layers formed upon the substrate; and light-emitting layers formed upon respective reflective layers and disposed so as to overlap the respective reflective layers when viewed from above. The reflective layers are formed in a convex shape protruding toward the respective light-emitting layers, and when reflecting light irradiated from the light-emitting layers, diffuse and reflect the light.Type: ApplicationFiled: March 8, 2010Publication date: September 16, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Norio KOMA, Kenji TANASE, Yasushi KARASAWA, Tadayoshi IKEHARA
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Publication number: 20100226120Abstract: An illumination device includes: a substrate; a first transparent electrode covering approximately an entire surface of a display region of the substrate; a second transparent electrode which overlaps with the first transparent electrode when seen in plan view and covers approximately the entire surface of the display region; and a plurality of island shaped light emitting elements disposed between the first transparent electrode and the second transparent electrode. The first and second transparent electrodes are formed as single continuous films.Type: ApplicationFiled: March 3, 2010Publication date: September 9, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Norio KOMA, Kenji TANASE, Yasushi KARASAWA, Tadayoshi IKEHARA
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Patent number: 7355337Abstract: There is provided a display panel that is capable of improving visibility outdoors and which can be easily manufactured. In a display panel in which at least one side thereof serves as a display surface, the display panel includes a first reflectance layer 3, which is made of titanium, titanium nitride, or an alloy of titanium and tungsten and a second reflectance layer 4, which is made of indium tin oxide, indium zinc oxide, or gallium zinc oxide, wherein the first and second low reflection layer 3 and 4 are deposited at positions corresponding to pixels on a substrate 1.Type: GrantFiled: May 12, 2006Date of Patent: April 8, 2008Assignee: Seiko Epson CorporationInventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
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Patent number: 7164228Abstract: There is provided a display panel capable of reducing the reflection of light, which is incident from the exterior, from a display, to enhance visibility out of doors. The display panel, which includes on a substrate a plurality of light-emitting layers, which form pixels, is characterized in that the display panel includes low-reflection layers formed between the substrate and the light-emitting layer and between the light-emitting layers, the low-reflection layer includes a first low-reflection layer made of titanium and a second low-reflection layer made of an indium tin oxide. In addition, the low-reflection layer may be provided to a sealant in a region between the light-emitting layers.Type: GrantFiled: December 18, 2003Date of Patent: January 16, 2007Assignee: Seiko Epson CorporationInventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
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Patent number: 7116045Abstract: A display panel is provided that is capable of enhancing visibility outdoors and which can be easily manufactured. In a display panel in which at least one side thereof serves as a display surface, the display panel includes a first reflectance layer, which may be made of titanium, titanium nitride, or an alloy of titanium and tungsten and a second reflectance layer, which may be made of indium tin oxide, indium zinc oxide, or gallium zinc oxide, the first and second low reflection layer being deposited at positions corresponding to pixels on a substrate.Type: GrantFiled: December 18, 2003Date of Patent: October 3, 2006Assignee: Seiko Epson CorporationInventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
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Publication number: 20060202610Abstract: There is provided a display panel that is capable of improving visibility outdoors and which can be easily manufactured. In a display panel in which at least one side thereof serves as a display surface, the display panel includes a first reflectance layer 3, which is made of titanium, titanium nitride, or an alloy of titanium and tungsten and a second reflectance layer 4, which is made of indium tin oxide, indium zinc oxide, or gallium zinc oxide, wherein the first and second low reflection layer 3 and 4 are deposited at positions corresponding to pixels on a substrate 1.Type: ApplicationFiled: May 12, 2006Publication date: September 14, 2006Applicant: Seiko Epson CorporationInventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
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Publication number: 20050180721Abstract: To provide a method for manufacturing an electro-optic device capable of preventing the degradation of a light-emitting layer which occurs in a manufacturing process; an electro-optic device; and an electronic apparatus. In a method for manufacturing an electro-optic device having a first electrode, a second electrode, and an electro-optic layer which is provided therebetween and above a base body, the method has the steps of forming a light emitting-material protective layer covering the second electrode by a vacuum deposition method and forming an electrode protective layer covering the light emitting-material protective layer by a plasma film-forming method.Type: ApplicationFiled: December 6, 2004Publication date: August 18, 2005Applicant: Seiko Epson CorporationInventors: Kenji Hayashi, Yasushi Karasawa
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Patent number: 6821716Abstract: A porous structure in which water repellency can be kept for a long term; an inkjet recording head in which the nozzle surface is superior in water repellency properties, and high printing quality can be maintained for a long term; a method of manufacturing such a porous structure and such an ink-jet recording head; and an ink-jet recording apparatus provided with such an ink-jet recording head. In a porous structure (100), recess portions (17) and protrusion portions (18) are formed on the surface of a substrate of the porous structure. The height of the protrusion portions (18) on the surface of the substrate is uniform. In addition, the recess portions (17) and the protrusion portions (18) are formed to have such a size that a liquid drop (21) does not fall down into the recess portion (17), and can contact with an air layer (20) in the recess portion (17). The porous structure (100) is adopted in the ink ejecting surface except for ink ejecting holes in an ink-jet recording head.Type: GrantFiled: May 13, 2002Date of Patent: November 23, 2004Assignee: Seiko Epson CorporationInventors: Yasushi Karasawa, Mitsuro Atobe
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Publication number: 20040191480Abstract: A structural member in which a super water-repellent function and high durability and scratch resistance can be obtained; and a method of manufacturing such a structural member. A water-repellent structure (100) consisting of appropriate irregularities comprising protrusion portions (18) uniform in height is formed on an external surface. The irregularities (17 and 18) have such dimensions that any droplet should not fall in a recess portion and the droplet is in contact with an air layer (20) in the recess portion (17).Type: ApplicationFiled: March 31, 2004Publication date: September 30, 2004Inventors: Yasushi Karasawa, Mitsuro Atobe
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Publication number: 20040178725Abstract: There is provided a display panel that is capable of improving visibility outdoors and which can be easily manufactured. In a display panel in which at least one side thereof serves as a display surface, the display panel includes a first reflectance layer 3, which is made of titanium, titanium nitride, or an alloy of titanium and tungsten and a second reflectance layer 4, which is made of indium tin oxide, indium zinc oxide, or gallium zinc oxide, wherein the first and second low reflection layer 3 and 4 are deposited at positions corresponding to pixels on a substrate 1.Type: ApplicationFiled: December 18, 2003Publication date: September 16, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
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Publication number: 20040178724Abstract: There is provided a display panel capable of reducing the reflection of light, which is incident from the exterior, from a display, to improve visibility out of doors. The display panel, which includes on a substrate 1 a plurality of light-emitting layers 5B, which form pixels, is characterized in that the display panel comprises low-reflection layers formed between the substrate 1 and the light-emitting layer 5B and between the light-emitting layers 5B, wherein the low-reflection layer consists of a first low-reflection layer 3 made of titanium and a second low-reflection layer 4 made of an indium tin oxide. In addition, the low-reflection layer may be provided to a sealant 8 in a region between the light-emitting layers 5B.Type: ApplicationFiled: December 18, 2003Publication date: September 16, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
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Patent number: 6764745Abstract: A structural member in which a super water-repellent function and high durability and scratch assistance can be obtained; and a method of manufacturing such a structural member. A water-repellent structure (100) consisting of appropriate irregularities comprising protrusion portions (18) uniform in height is formed on an external surface. The irregularities (17 and 18) have such dimensions that any droplet should not fall in a recess portion and the droplet is in contact with an air layer (20) in the recess portion (17).Type: GrantFiled: September 27, 2000Date of Patent: July 20, 2004Assignee: Seiko Epson CorporationInventors: Yasushi Karasawa, Mitsuro Atobe
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Publication number: 20030038854Abstract: A porous structure in which water repellency can be kept for a long term; an inkjet recording head in which the nozzle surface is superior in water repellency properties, and high printing quality can be maintained for a long term; a method of manufacturing such a porous structure and such an ink-jet recording head; and an ink-jet recording apparatus provided with such an ink-jet recording head. In a porous structure (100), recess portions (17) and protrusion portions (18) are formed on the surface of a substrate of the porous structure. The height of the protrusion portions (18) on the surface of the substrate is uniform. In addition, the recess portions (17) and the protrusion portions (18) are formed to have such a size that a liquid drop (21) does not fall down into the recess portion (17), and can contact with an air layer (20) in the recess portion (17). The porous structure (100) is adopted in the ink ejecting surface except for ink ejecting holes in an ink-jet recording head.Type: ApplicationFiled: May 13, 2002Publication date: February 27, 2003Applicant: SEIKO EPSON CORPORATIONInventors: Yasushi Karasawa, Mitsuro Atobe
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Patent number: 6467876Abstract: A porous structure in which water repellency can be kept for a long term; an ink-jet recording head in which the nozzle surface is superior in water repellency properties, and high printing quality can be maintained for a long term; a method manufacturing such a porous structure and such an ink-jet recording head; and an ink-jet recording apparatus provided with such an ink-jet recording head. In a porous structure (100), recess portions (17) and protrusion portions (18) are formed on the surface of a substrate of the porous structure. The height of the protrusion portions (18) on the surface oft he substrate is uniform. In addition, the recess portions (17) and the protrusion portions (18) are formed to have such a size that a liquid drop (21) does not fall down into the recess portion (17), and can contact with an air layer (20) in the recess portion (17). The porous structure (100) is adopted in the ink ejecting surface except for ink ejecting holes in an ink-jet recording head.Type: GrantFiled: May 10, 1999Date of Patent: October 22, 2002Assignee: Seiko Epson CorporationInventors: Yasushi Karasawa, Mitsuro Atobe
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Patent number: 6183883Abstract: Brazing or soldering materials which effectively improve the wettability of the brazing alloy or solder without using flux and a method of manufacturing such materials are provided. A metallic base is placed on turntable inside a vacuum chamber. A copper target is affixed to a sputtering electrode above the metallic base. Air is removed from the vacuum chamber through a vacuum outlet to increase the vacuum therein to a specific pressure, and carbon tetrafluoride and argon are introduced from a gas inlet to control the sputter pressure. Thereafter, turntable is rotated while a high frequency voltage is applied between the target and the metallic base to form a halide layer, such as a layer of copper fluoride, on a surface of metallic base.Type: GrantFiled: June 16, 1998Date of Patent: February 6, 2001Assignee: Seiko Epson CorporationInventors: Yoshiaki Mori, Katsuhiro Takahashi, Takuya Miyakawa, Yasushi Karasawa
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Patent number: 5502470Abstract: The present invention provides an ink jet recording head for use in an ink jet recording device, wherein a water-repellent layer (21) comprising a homogeneous layer of a fluoropolymer is formed on the surface of a nozzle for jetting an ink. This water-repellent layer can be formed as a dense, homogeneous layer through the use of a solvent-soluble fluoropolymer, which enables an ink jet recording head excellent in the water-repellent property, the persistence of the water repellency and the durability.Type: GrantFiled: September 23, 1992Date of Patent: March 26, 1996Assignee: Seiko Epson CorporationInventors: Satoru Miyashita, Mitsuro Atobe, Yasushi Karasawa, Kiyohiko Takemoto, Yasuhiro Ouki