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).

  • Patent number: 8684549
    Abstract: 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: Grant
    Filed: June 18, 2012
    Date of Patent: April 1, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Norio Koma, Kenji Tanase, Yasushi Karasawa, Tadayoshi Ikehara
  • Publication number: 20120256207
    Abstract: 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: Application
    Filed: June 18, 2012
    Publication date: October 11, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Norio KOMA, Kenji TANASE, Yasushi KARASAWA, Tadayoshi IKEHARA
  • Patent number: 8220943
    Abstract: 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: Grant
    Filed: March 3, 2010
    Date of Patent: July 17, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Norio Koma, Kenji Tanase, Yasushi Karasawa, Tadayoshi Ikehara
  • Publication number: 20100231825
    Abstract: 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: Application
    Filed: March 8, 2010
    Publication date: September 16, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Norio KOMA, Kenji TANASE, Yasushi KARASAWA, Tadayoshi IKEHARA
  • Publication number: 20100226120
    Abstract: 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: Application
    Filed: March 3, 2010
    Publication date: September 9, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Norio KOMA, Kenji TANASE, Yasushi KARASAWA, Tadayoshi IKEHARA
  • Patent number: 7355337
    Abstract: 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: Grant
    Filed: May 12, 2006
    Date of Patent: April 8, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
  • Patent number: 7164228
    Abstract: 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: Grant
    Filed: December 18, 2003
    Date of Patent: January 16, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
  • Patent number: 7116045
    Abstract: 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: Grant
    Filed: December 18, 2003
    Date of Patent: October 3, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
  • Publication number: 20060202610
    Abstract: 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: Application
    Filed: May 12, 2006
    Publication date: September 14, 2006
    Applicant: Seiko Epson Corporation
    Inventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
  • Publication number: 20050180721
    Abstract: 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: Application
    Filed: December 6, 2004
    Publication date: August 18, 2005
    Applicant: Seiko Epson Corporation
    Inventors: Kenji Hayashi, Yasushi Karasawa
  • Patent number: 6821716
    Abstract: 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: Grant
    Filed: May 13, 2002
    Date of Patent: November 23, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Yasushi Karasawa, Mitsuro Atobe
  • Publication number: 20040191480
    Abstract: 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: Application
    Filed: March 31, 2004
    Publication date: September 30, 2004
    Inventors: Yasushi Karasawa, Mitsuro Atobe
  • Publication number: 20040178725
    Abstract: 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: Application
    Filed: December 18, 2003
    Publication date: September 16, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
  • Publication number: 20040178724
    Abstract: 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: Application
    Filed: December 18, 2003
    Publication date: September 16, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yasushi Karasawa, Shigeo Nojima, Ryoichi Nozawa
  • Patent number: 6764745
    Abstract: 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: Grant
    Filed: September 27, 2000
    Date of Patent: July 20, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Yasushi Karasawa, Mitsuro Atobe
  • Publication number: 20030038854
    Abstract: 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: Application
    Filed: May 13, 2002
    Publication date: February 27, 2003
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yasushi Karasawa, Mitsuro Atobe
  • Patent number: 6467876
    Abstract: 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: Grant
    Filed: May 10, 1999
    Date of Patent: October 22, 2002
    Assignee: Seiko Epson Corporation
    Inventors: Yasushi Karasawa, Mitsuro Atobe
  • Patent number: 6183883
    Abstract: 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: Grant
    Filed: June 16, 1998
    Date of Patent: February 6, 2001
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiaki Mori, Katsuhiro Takahashi, Takuya Miyakawa, Yasushi Karasawa
  • Patent number: 5502470
    Abstract: 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: Grant
    Filed: September 23, 1992
    Date of Patent: March 26, 1996
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Miyashita, Mitsuro Atobe, Yasushi Karasawa, Kiyohiko Takemoto, Yasuhiro Ouki