Patents by Inventor Koichi Kajiyama

Koichi Kajiyama 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: 9086514
    Abstract: A scanning exposure apparatus uses a plurality of microlens arrays to project a mask exposure pattern onto a substrate. A CCD line camera detects an image on the substrate at this time, and using a first-layer pattern on the substrate as a reference pattern, detects whether or not the mask exposure pattern matches the reference pattern. In a case in which the patterns do not match, the microlens array is tilted from a direction that is parallel to the substrate, and the mask exposure pattern is made to match the reference pattern by using the microlens array to adjust the exposure area on the substrate. When the exposure pattern deviates from the reference pattern, it is thereby possible to detect the deviation during exposure and to prevent an exposure pattern misregistration, thereby enhancing the precision of the exposure pattern in an overlay exposure.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: July 21, 2015
    Assignee: V TECHNOLOGY CO., LTD.
    Inventors: Koichi Kajiyama, Michinobu Mizumura, Makoto Hatanaka, Toshinari Arai
  • Publication number: 20150192830
    Abstract: A photo-alignment exposure method divides each unit image area of a liquid crystal display into a plurality of divided areas and photo-aligns an alignment material film of each of the divided areas in mutually different directions. The method includes a first exposure process that radiates light at an inclined photo-irradiation angle onto an exposed surface of entire the unit image area; and a second exposure process that radiates light onto one area of the divided areas at an inclined photo-irradiation angle different from the photo-irradiation angle in the first exposure process. In the second exposure process, the light is radiated through a mask pattern corresponding to one area of the divided areas, and transmitted light of the mask pattern is condensed by condensing element and radiated onto the area.
    Type: Application
    Filed: March 29, 2013
    Publication date: July 9, 2015
    Applicant: V TECHNOLOGY CO., LTD.
    Inventors: Koichi Kajiyama, Kazushige Hashimoto, Toshinari Arai
  • Publication number: 20150177568
    Abstract: A photo-alignment exposure device that includes a first mask and a first exposure device that independently proximity-exposes a first divided area, a second mask and a second exposure device that independently proximity-exposes a second divided area adjacent to the first divided area, and a third mask and a third exposure device that exposes an area on a side of the first divided area near a boundary between the first divided area and the second divided area. The third exposure device is provided with a photo-irradiation angle same as that of the first exposure device or the second exposure device with respect to an exposed surface. A condensing element that condenses the mask transmitted light on the area on a side of the first divided area near the boundary is provided between the mask opening of the third mask and the exposed surface.
    Type: Application
    Filed: March 29, 2013
    Publication date: June 25, 2015
    Inventors: Koichi Kajiyama, Kazushige Hashimoto, Toshinari Arai
  • Patent number: 9054494
    Abstract: A pulsed laser oscillator includes at least one first electrooptical element that polarizes light according to an applied voltage and a voltage control unit that applies a voltage to the first electrooptical element and controls the voltage. The voltage control unit changes over time a voltage value applied to the first electrooptical element, to control a pulse width of laser light.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: June 9, 2015
    Assignee: V TECHNOLOGY CO., LTD.
    Inventors: Koichi Kajiyama, Michinobu Mizumura, Tetsuya Kiguchi, Daisuke Ishii, Yoshikatsu Yanagawa, Masami Takimoto
  • Patent number: 9012338
    Abstract: In the present invention, At least one row of lens arrays, in which a plurality of lenses are arranged in a direction intersecting with the conveying direction of a substrate to correspond to the plurality of TFT forming areas set in a matrix on the substrate, is shifted in the direction intersecting with the conveying direction of the substrate, to thereby align the lenses in the lens array with the TFT forming areas on the substrate based on the alignment reference position. The laser beams are irradiated onto the lens array when the substrate moves and the TFT forming areas reach the underneath of the corresponding lenses of the lens array, and the laser beams are focused by the plurality of lenses to anneal the amorphous silicon film in each TFT forming area.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 21, 2015
    Assignee: V Technology Co., Ltd.
    Inventors: Koichi Kajiyama, Michinobu Mizumura
  • Patent number: 8982321
    Abstract: In the present invention, while conveying a subject to be exposed, when exposure on a first exposure area of the subject to be exposed is completed, the exposure being performed by using a first mask pattern group of a photomask in which a plurality of types of mask pattern groups corresponding to each exposure pattern is arranged and formed in a conveying direction of the exposure to be exposed at a predetermined interval, the photomask is moved in synchronization with a conveying speed of the exposure to be exposed and the mask pattern group is switched from the first mask pattern group to a second mask pattern group. When the switching of the mask pattern group of the photomask 11 is completed, the movement of the photomask is stopped, exposure on a second exposure area of the subject to be exposed 8 is performed by the mask pattern group.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: March 17, 2015
    Assignee: V Technology Co., Ltd.
    Inventor: Koichi Kajiyama
  • Publication number: 20150063410
    Abstract: A nondestructive inspection apparatus of a structure includes: an inspection apparatus body 1 provided with an infrared light irradiation unit irradiating a structure 3 to be inspected with heating infrared light, a temperature variation measuring unit measuring a variation in temperature of the structure due to the irradiation with infrared light from the infrared light irradiation unit, a drive-control-and-accumulation unit performing drive control of the infrared light irradiation unit and the temperature variation measuring unit and performing data accumulation; and a self-running mechanism unit 2 enabling the inspection apparatus body 1 to move along the structure 3. The structure 3 is inspected for an internal defect by irradiating the structure 3 with heating infrared light while the apparatus moves along the structure 3 through the use of the self-running mechanism unit 2 and measuring the variation in temperature of the structure 3 due to the irradiation with infrared light.
    Type: Application
    Filed: September 2, 2014
    Publication date: March 5, 2015
    Inventors: Koichi KAJIYAMA, Michinobu MIZUMURA, Yoshinori OGAWA
  • Publication number: 20150017321
    Abstract: To provide a method for forming a thin film pattern 14 having a predetermined shape on a surface of a substrate 1 having an electrode formed in advance in a thin film pattern forming region, there are included the steps of: bringing a resin film 2, which transmits visible light, into close contact with the substrate 1; irradiating the thin film pattern forming region 11 on the substrate 1 with laser light L, thereby forming an opening pattern 21 having the same shape as the thin film pattern 14 in the film 2; forming the thin film pattern 14 in the thin film pattern forming region 11 on the substrate 1 through the opening pattern 21 of the film 2; and peeling off the film 2.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Inventors: Syuji KUDO, Michinobu MIZUMURA, Koichi KAJIYAMA, Hany Maher AZIZ, Yoshitaka KAJIYAMA
  • Publication number: 20150009478
    Abstract: An exposure head according to the invention includes: a transparent substrate; a plurality of exposure light sources which is formed in the transparent substrate and emits exposure light; at least one condensing lens which condenses the exposure light from the exposure light sources on the exposure object; an imaging unit which is disposed on the opposite side to the condensing lens with the transparent substrate interposed therebetween and images the exposure object; and a control unit which controls the turning on of the exposure light sources based on image information imaged by the imaging unit. An exposure device according to the invention includes the exposure head according to the invention. By virtue of such a configuration, it is possible to improve alignment precision of the exposure object and to improve exposure precision of the exposure object.
    Type: Application
    Filed: September 18, 2014
    Publication date: January 8, 2015
    Inventors: Koichi KAJIYAMA, Michinobu MIZUMURA
  • Patent number: 8922752
    Abstract: A method for alignment processing including making a substrate 4, coated with an aligned film, closely face the photo mask 7 having a first mask pattern group having a plurality of elongated first openings formed at a fixed array pitch and a second mask pattern group provided in parallel with the first mask pattern group and having a plurality of elongated second openings formed at the same pitch as the array pitch of the first openings and moving the substrate in a direction crossing the first and second mask pattern groups, applying P polarizations with different incidence angles ? to the first and second mask pattern groups of the photo mask, and alternately forming, on the aligned film, first and second slit alignment regions in different aligned states.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: December 30, 2014
    Assignee: V Technology Co., Ltd.
    Inventors: Koichi Kajiyama, Toshinari Arai, Michinobu Mizumura
  • Patent number: 8912079
    Abstract: Provided is a compound semiconductor deposition method of adjusting the luminous wavelength of a compound semiconductor of a ternary or higher system in a nanometer order in depositing the compound semiconductor on a substrate.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: December 16, 2014
    Assignees: The University of Tokyo, V Technology Co., Ltd.
    Inventors: Motoichi Ohtsu, Takashi Yatsui, Tadashi Kawazoe, Shunsuke Yamazaki, Koichi Kajiyama, Michinobu Mizumura, Keiichi Ito
  • Publication number: 20140199808
    Abstract: A deposition mask for forming a thin film pattern having a predetermined shape on a substrate by deposition, includes a resin film that transmits visible light and has an opening pattern penetrating through the resin film and having the same shape and dimension as those of the thin film pattern so as to correspond to a preliminarily determined forming region of the thin film pattern on the substrate.
    Type: Application
    Filed: March 14, 2014
    Publication date: July 17, 2014
    Applicant: V TECHNOLOGY CO., LTD.
    Inventors: Shigeto SUGIMOTO, Koichi KAJIYAMA, Michinobu MIZUMURA, Syuji KUDO, Eriko KIMURA, Hany Maher AZIZ, Yoshitaka KAJIYAMA
  • Patent number: 8748326
    Abstract: Provided is a forming device and method making it possible to obtain a low-temperature polysilicon film in which the size of crystal grains fluctuates minimally, and is uniform. A mask has laser-light-blocking areas and laser-light-transmission areas arranged in the form of a grid such that the light-blocking areas and transmission areas are not adjacent to one another. Laser light is directed by the microlenses through the masks to planned channel-area-formation areas. The laser light transmitted by the transmission areas is directed onto an a-Si:H film, annealing and polycrystallizing the irradiated parts thereof. The mask is then removed, and when the entire planned channel-area-formation area is irradiated with laser light, the already-polycrystallized area, having a higher melting point, does not melt, while the area in an amorphous state melts and solidifies, leading to polycrystallization.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: June 10, 2014
    Assignee: V Technology Co., Ltd.
    Inventors: Koichi Kajiyama, Kuniyuki Hamano, Michinobu Mizumura
  • Publication number: 20140126591
    Abstract: A pulsed laser oscillator includes at least one first electrooptical element that polarizes light according to an applied voltage and a voltage control unit that applies a voltage to the first electrooptical element and controls the voltage. The voltage control unit changes over time a voltage value applied to the first electrooptical element, to control a pulse width of laser light.
    Type: Application
    Filed: January 9, 2014
    Publication date: May 8, 2014
    Applicant: V TECHNOLOGY CO., LTD.
    Inventors: Koichi KAJIYAMA, Michinobu Mizumura, Tetsuya Kiguchi, Daisuke Ishii, Yoshikatsu Yanagawa, Masami Takimoto
  • Publication number: 20140063808
    Abstract: In a laser lighting device, a fly's eye lens and a condenser lens are disposed in an optical path of pulsed laser light emitted from a light source, and an electro-optical crystal element for continuously changing the deflection direction of the pulsed laser light with respect to the incident light and allowing the deflected light to pass therethrough is disposed in a position between the light source and the fly's eye lens or between the fly's eye lens and the condenser lens. The electro-optical crystal element is formed, for example, of a pair of electrodes and an optical crystal material disposed between the electrodes, and a voltage is applied between the electrodes to produce an electric field that changes the refractive index of the electro-optical crystal element. As a result, non-uniform illumination due to interference fringes produced by light having passed through the fly's eye lens can be reduced.
    Type: Application
    Filed: April 3, 2012
    Publication date: March 6, 2014
    Applicant: V Technology Co., Ltd.
    Inventors: Koichi Kajiyama, Michinobu Mizumura, Makoto Hatanaka, Yoshikatsu Yanagawa
  • Publication number: 20130342820
    Abstract: A light-exposure device is provided with a microlens array on which is arranged with a prescribed regularity a plurality of microlenses on which exposure light transmitted through a light source and a mask is introduced to resolve an upright equal-magnification image on a substrate. Upon reaching a prescribed position, the substrate is irradiated with pulsed laser light from the light source, and the substrate is successively exposed, and after the entire area of the exposure region of the substrate is exposed, a relative positional relationship between the microlens array and the mask is successively switched in a vertical direction by an amount of a horizontal pitch of the microlenses, and a subsequent exposure is performed. Exposure with high precision and high resolution can thereby be performed with a short exposure cycle time.
    Type: Application
    Filed: February 2, 2012
    Publication date: December 26, 2013
    Applicant: V Technology Co., Ltd.
    Inventors: Koichi Kajiyama, Michinobu Mizumura, Makoto Hatanaka
  • Patent number: 8497979
    Abstract: In the present invention, when exposure on a first exposure area of the subject to be exposed by using a first mask pattern group of a photomask, is completed, the shutter is moved in synchronization with a conveying speed of the subject to be exposed to shut off source light, the subject to be exposed is returned by a distance in which the subject to be exposed moves while the shutter moves, and the mask pattern group is switched to a second mask pattern group by moving the photomask. When the switching of the mask pattern group of the photomask is completed, the conveying of the subject to be exposed is restarted. At the same time, the shutter is moved in synchronization with the conveying speed of the subject to be exposed to release the shut off of the source light, and exposure on a second exposure area is performed.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: July 30, 2013
    Assignee: V Technology Co., Ltd.
    Inventor: Koichi Kajiyama
  • Publication number: 20130188161
    Abstract: A scanning exposure apparatus uses a plurality of microlens arrays to project a mask exposure pattern onto a substrate. A CCD line camera detects an image on the substrate at this time, and using a first-layer pattern on the substrate as a reference pattern, detects whether or not the mask exposure pattern matches the reference pattern. In a case in which the patterns do not match, the microlens array is tilted from a direction that is parallel to the substrate, and the mask exposure pattern is made to match the reference pattern by using the microlens array to adjust the exposure area on the substrate. When the exposure pattern deviates from the reference pattern, it is thereby possible to detect the deviation during exposure and to prevent an exposure pattern misregistration, thereby enhancing the precision of the exposure pattern in an overlay exposure.
    Type: Application
    Filed: September 12, 2011
    Publication date: July 25, 2013
    Applicant: V Technology Co., LTD.
    Inventors: Koichi Kajiyama, Michinobu Mizumura, Makoto Hatanaka, Toshinari Arai
  • Patent number: 8488097
    Abstract: One aspect of the invention provides a liquid crystal display device producing method for irradiating a liquid crystal display substrate, in which plural pixels are formed in a matrix state and liquid crystal is sealed between a TFT substrate and a counter electrode substrate, with light having a predetermined wavelength to orient liquid crystal molecules toward a predetermined direction in a state in which an electric field is applied to each pixel of the liquid crystal display substrate. The method includes the steps of: dipping the liquid crystal display substrate and a lamp in a transparent liquid having resistivity of a predetermined value or more and sufficiently high transmittance to the light in a state in which the liquid crystal display substrate and the lamp face each other; and lighting the lamp to irradiate the liquid crystal display substrate with the light having a predetermined light quantity in a state in which the electric field is applied to each pixel.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: July 16, 2013
    Assignee: V Technology Co., Ltd.
    Inventors: Koichi Kajiyama, Michinobu Mizumura, Kazushige Hashimoto
  • Publication number: 20130149572
    Abstract: A battery unit (1) includes battery subunits (11, 12, 13) and a voltage monitoring circuit (30). The battery subunits (11, 12, 13) includes battery modules (110, 120, 130), each having a secondary battery cell (111, 121, 131) and a fuse (112, 122, 132) connected in series. The voltage monitoring circuit (30) monitors the voltage across the terminals of each of the battery subunits (11, 12, 13). Each of the battery subunits (11, 12, 13) includes one battery module or a plurality of battery modules (110, 120, 130) connected in parallel.
    Type: Application
    Filed: January 16, 2012
    Publication date: June 13, 2013
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Yuzo Matsuo, Ryo Nagai, Koichi Kajiyama