Patents by Inventor Takeshi Nishi

Takeshi Nishi 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: 8975813
    Abstract: The luminance of different colors of light emitted from EL elements in a pixel portion of a light emitting device is equalized and the luminance of light emitted from the EL elements is raised. The pixel portion of the light emitting device has EL elements whose EL layers contain triplet compounds and EL elements whose EL layers contain singlet compounds in combination. The luminance of light emitted from the plural EL elements is thus equalized. Furthermore, a hole transporting layer has a laminate structure to thereby cause the EL elements to emit light of higher luminance.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 10, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takeshi Nishi, Mayumi Mizukami, Hisao Ikeda
  • Patent number: 8927979
    Abstract: A light emitting device having a structure in which oxygen and moisture are prevented from reaching light emitting elements, and a method of manufacturing the same, are provided. Further, the light emitting elements are sealed by using a small number of process steps, without enclosing a drying agent. The present invention has a top surface emission structure. A substrate on which the light emitting elements are formed is bonded to a transparent sealing substrate. The structure is one in which a transparent second sealing material covers the entire surface of a pixel region when bonding the two substrates, and a first sealing material (having a higher viscosity than the second sealing material), which contains a gap material (filler, fine particles, or the like) for protecting a gap between the two substrates, surrounds the pixel region. The two substrates are sealed by the first sealing material and the second sealing material.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: January 6, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takeshi Nishi, Yasuo Nakamura
  • Publication number: 20140377893
    Abstract: It is an object to provide a liquid crystal display device capable of displaying a moving image with high image quality by employing a time-division display system (also called a field-sequential system) with the use of a plurality of light-emitting diodes (hereinafter referred to as LEDs) as a backlight. Further, it is an object to provide a liquid crystal display device in which high image quality, full color display, or low power consumption is realized by adjustment of the peak luminance. After a liquid crystal layer is sealed between a pair of substrates, polymer stabilization treatment is performed with the use of UV irradiation from both above and below the pair of substrates at the same time, whereby the polymer included in the liquid crystal layer sandwiched between the pair of substrates is evenly distributed. Thus, a liquid crystal display device is manufactured.
    Type: Application
    Filed: September 8, 2014
    Publication date: December 25, 2014
    Inventors: Tetsuji ISHITANI, Daisuke KUBOTA, Takeshi NISHI
  • Patent number: 8897603
    Abstract: An image processing apparatus includes a selection device that selects a plurality of frames from a video image constituted with a group of frames, an extraction device that recognizes a specific subject image in the plurality of frames having been selected and extracts the recognized subject image, and an image creation device that creates a still image containing a plurality of subject images having been extracted by the extraction device.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: November 25, 2014
    Assignee: Nikon Corporation
    Inventor: Takeshi Nishi
  • Patent number: 8854593
    Abstract: In an active matrix semiconductor display device in which pixel TFTs and driver circuit TFT are formed on the same substrate in an integral manner, the cell gap is controlled by gap retaining members that are disposed between a pixel area and driver circuit areas. This makes it possible to provide a uniform cell thickness profile over the entire semiconductor display device. Further, since conventional grainy spacers are not used, stress is not imposed on the driver circuit TFTs when a TFT substrate and an opposed substrate are bonded together. This prevents the driver circuit TFTs from being damaged.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: October 7, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiharu Hirakata, Takeshi Nishi, Shunpei Yamazaki
  • Publication number: 20140204246
    Abstract: An image processing device includes: an identifying unit that identifies an image area where gradations are lost in a first captured image obtained by capturing a subject image; an image texture image generation unit that generates an image texture image by aligning a second captured image, obtained by capturing an image of a subject matching the subject of the first captured image, with the first captured image and extracting an image texture corresponding to the image area having been identified by the identifying unit; and an interpolation unit that executes interpolation for the image area in the first captured image by synthetically incorporating the image texture image having been generated by the image texture image generation unit with the first captured image.
    Type: Application
    Filed: September 3, 2012
    Publication date: July 24, 2014
    Applicant: NIKON CORPORATION
    Inventor: Takeshi Nishi
  • Patent number: 8785964
    Abstract: In a sealing method of a top-emission organic light emitting element, in the case of using a method of filling with a sealing agent between a substrate mounted with pixels and an opposed substrate, the organic light-emitting element is degraded by ultraviolet rays when irradiation of the ultraviolet rays is performed toward the pixels in order to achieve ultraviolet curing of the sealing agent filling on the pixels. It is an object of the present invention to propose a method for avoiding this phenomenon to provide an organic light-emitting device with superior stability. In order for a sealing agent 13 filling on a pixel portion 14 to have a larger absorbance to ultraviolet rays, an ultraviolet-absorbent material is dispersed in a sealing agent to make an adjustment so that the absorbance of ultraviolet absorption wavelength of 400 nm or less becomes 1 or more.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: July 22, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoko Shitagaki, Satoshi Seo, Takeshi Nishi
  • Patent number: 8754577
    Abstract: An EL display device capable of reducing an average film resistance of an anode in an EL device as well as displaying an image with high definition, and electrical equipment including such an EL display device are provided. A light-shielding metal film (109) is provided on an anode (108) so as to conceal gaps between the pixels. Thus, an average film resistance of the anode (108) in the EL device is reduced. Furthermore, light leakage from the gaps between the pixels can be prevented, resulting in an image display with high definition.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: June 17, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takeshi Nishi, Noriko Ishimaru
  • Patent number: 8733959
    Abstract: It is an object to manufacture a highly reliable backlight device with less color unevenness and less luminance unevenness, and a high-performance and highly reliable display device including the backlight device, which can display a high quality image. A light emitting diode (LED) is used as a light source of a backlight device and thermoelectric elements are provided in a chassis for holding the light emitting diode so as to surround the light emitting diode (the thermoelectric elements are provided under the light emitting diode and on the four sides thereof). A temperature in the backlight device is adjusted by cooling and heating by the thermoelectric elements.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: May 27, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koji Moriya, Takeshi Nishi
  • Patent number: 8723768
    Abstract: The display device includes an anti-reflection film having a plurality of projections over a display screen surface and a protective layer filling a space between the projections. The number of times of incidence of external light entering the display device on the anti-reflection film is increased; therefore, the amount of external light transmitted through the anti-reflection film is increased. Thus, the amount of external light reflected to a viewer side is reduced, and the cause of a reduction in visibility such as reflection can be eliminated. Further, since the plurality of projections is covered with a protective layer, entry of dust can be prevented, and physical strength of the anti-reflection film can be increased.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: May 13, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuji Egi, Takeshi Nishi, Kiyofumi Ogino, Shinya Sasagawa, Motomu Kurata, Hideomi Suzawa
  • Patent number: 8723781
    Abstract: A liquid crystal display device is provided, which includes a liquid crystal element including a pixel electrode, a counter electrode, and a liquid crystal disposed between the pixel electrode and the counter electrode, a light source, a comparing circuit configured to compare a potential of the pixel electrode and a reference potential, and supply an output potential in accordance with the result of the comparison, and a control circuit configured to switch turning-on and turning-off of the light source in accordance with the output potential supplied from the comparing circuit.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: May 13, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Fukutome, Takeshi Nishi
  • Publication number: 20140116614
    Abstract: An object is to improve productivity related to a laser light irradiation step in a bonding technique of substrates using glass frit. A highly airtight sealing structure or a highly airtight light-emitting device, which can be manufactured with high productivity, is provided. When a glass layer by melting glass frit or a sintered body by sintering glass frit is irradiated with laser light, in order to increase the efficiency, a light-absorbing material is attached to a surface of the glass layer. The laser light irradiation is performed on the light-absorbing material and the glass layer. The substrates are fixed with the glass layer therebetween.
    Type: Application
    Filed: October 22, 2013
    Publication date: May 1, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shuji Fukai, Yusuke Kubota, Mika Jikumaru, Takeshi Nishi, Akihisa Shimomura, Yoji Nagano, Daiki Nakamura
  • Patent number: 8704971
    Abstract: In a method for manufacturing a liquid crystal display device in which a liquid crystal layer is formed by dropping liquid crystal by a dropping method, a surface of a sealant which is formed over a first substrate is cured by a first cure treatment before dropping the liquid crystal, and then the liquid crystal is dropped. A second substrate has a plurality of projections in a sealant adhesive region. The first substrate and the second substrate are attached to each other with the liquid crystal interposed therebetween so that the plurality of projections is in contact with an uncured region in the sealant formed over the first substrate.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: April 22, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takeshi Nishi, Tetsuji Ishitani
  • Publication number: 20140097438
    Abstract: An object of the present invention is to provide a light emitting device in which variations in an emission spectrum depending on a viewing angle with respect to a side from which luminescence is extracted are decreased. A light emitting device according to the invention has a transistor, an insulating layer covering the transistor and a light emitting element provided in an opening of the insulating layer. The transistor and the light emitting element are electronically connected through a connecting portion. Additionally, the connecting portion is connected to the transistor through a contact hole penetrating the insulating layer. Note that the insulating layer may be a single layer or a multilayer in which a plurality of layers including different substances is laminated.
    Type: Application
    Filed: December 12, 2013
    Publication date: April 10, 2014
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Takahiro KAWAKAMI, Kaoru Tsuchiya, Takeshi Nishi
  • Patent number: 8670091
    Abstract: An object of the invention is to provide a display device having a high contrast ratio. Another object of the invention is to manufacture such a high-performance display device at low cost. In a display device having a display element between a pair of light-transmissive substrates, polarizer-including layers, which have different wavelength distributions of extinction coefficients, are stacked so that absorption axes are in a parallel nicol state, over each light-transmissive substrate. Absorption axes of one of a pair of stacks of polarizers and the other together which interpose the display element are deviated from a cross nicol state. A retardation plate may be provided between the stack of polarizing plates and the substrate.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: March 11, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuji Egi, Tetsuji Ishitani, Takeshi Nishi
  • Patent number: 8669567
    Abstract: A light-emitting device is disclosed. More particularly, the light-emitting device comprises a first substrate; a light-emitting element over the first substrate; a second substrate over the light-emitting element, wherein the second substrate contains a concave portion; a sealant between the first substrate and the second substrate; and a material having a water absorbing property is formed in the concave portion, wherein the material having the water absorbing property is provided so as not to overlap the light-emitting element, and so as to be spaced from the sealant.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: March 11, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Kawakami, Kaoru Tsuchiya, Takeshi Nishi, Yoshiharu Hirakata, Keiko Kida, Ayumi Sato, Shunpei Yamazaki
  • Publication number: 20140065430
    Abstract: A display device in which reliability of a display element is improved is provided. Alternatively, a display device in which reliability of a transistor is improved is provided. Alternatively, a display device in which an increase in an area of a periphery region is suppressed is provided. A display device includes a display region including a display element between a first flexible substrate and a second flexible substrate in which the display region is surrounded by a first continuous sealant, the first sealant is surrounded by a second continuous sealant, and the second sealant is provided between the first substrate and the second substrate and on at least one of a side surface of the first substrate and a side surface of the second substrate.
    Type: Application
    Filed: August 23, 2013
    Publication date: March 6, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yoshiharu Hirakata, Takeshi Nishi
  • Publication number: 20140061612
    Abstract: A highly reliable display device is provided. Alternatively, a display device with a narrow frame is provided. The display device includes: a first substrate and a second substrate facing each other; a pixel portion including a display element, between the first substrate and the second substrate; a first sealant provided around a periphery of the pixel portion; a second sealant which is in contact with at least one of a side surface of the first substrate and a side surface of the second substrate and with which a gap between the first substrate and the second substrate is filled; and a third sealant overlapping with a side surface of the first sealant and at least one of the side surface of the first substrate and the side surface of the second substrate with the second sealant interposed therebetween.
    Type: Application
    Filed: August 23, 2013
    Publication date: March 6, 2014
    Inventors: Shunpei YAMAZAKI, Yoshiharu Hirakata, Takeshi Nishi
  • Publication number: 20140063432
    Abstract: A display device having high reliability is provided. A frame of a display device is narrowed. A display device such as a liquid crystal display device includes a first substrate, a second substrate overlapping with the first substrate, a liquid crystal layer between the first substrate and the second substrate, a first sealant surrounding the liquid crystal layer between the first substrate and the second substrate, and a second sealant surrounding the first sealant, closing a gap between the first substrate and the second substrate, and extending to at least a side surface of the second substrate.
    Type: Application
    Filed: August 13, 2013
    Publication date: March 6, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Yoshiharu HIRAKATA, Takeshi NISHI
  • Patent number: 8659730
    Abstract: A liquid crystal dripping method has a problem in that an uncured sealant increases in width at the time of attaching a pair of substrates and thus a liquid crystal material enters the sealant and unevenness occurs in the inner periphery of the sealant. A region in which reduced is the speed of diffusion of liquid crystal at the time of attaching a pair of substrates is provided between a sealant and an orientation film. Further, time for diffusing the liquid crystal and coming in contact with the sealant is made long. Accordingly, the sealant is subjected to photo-curing before the liquid crystal comes in contact with the sealant. The region in which reduced is the speed of diffusion of the liquid crystal is formed using a material for forming a vertical orientation film, a silane coupling agent, a substance having a photocatalytic function, or the like.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: February 25, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masahide Kanai, Takeshi Nishi, Daisuke Kubota, Tetsuji Ishitani