Patents by Inventor Miyuki Ishikawa

Miyuki Ishikawa 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).

  • Publication number: 20170097712
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: December 14, 2016
    Publication date: April 6, 2017
    Applicant: JAPAN DISPLAY INC.
    Inventors: Yoshiro AOKI, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Patent number: 9547403
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: January 17, 2017
    Assignee: JAPAN DISPLAY INC.
    Inventors: Yoshiro Aoki, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Publication number: 20160291738
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: June 13, 2016
    Publication date: October 6, 2016
    Applicant: JAPAN DISPLAY INC.
    Inventors: Yoshiro AOKI, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Patent number: 9411478
    Abstract: According to one embodiment, a display device includes a display panel having a counter substrate, an array substrate and a liquid crystal layer held therebetween, a counter electrode provided on the counter substrate, a pixel electrode arranged on the array substrate in a matrix, a sensor circuit arranged between rows of the plurality of pixel electrodes and configured to read out intensity of capacitive coupling between the sensor circuit and a dielectric, and a counter electrode drive circuit configured to pulsatively drive a common voltage added to the counter electrode during a period of driving the sensor circuit, wherein the sensor circuit comprises a detection electrode configured to form capacitance between the sensor circuit and the dielectric and to form capacitance between the sensor circuit and the counter electrode, and wherein the counter electrode comprises an aperture including at least a portion opposed to the detection electrode.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: August 9, 2016
    Assignee: Japan Display Inc.
    Inventors: Miyuki Ishikawa, Masahiro Tada, Takashi Nakamura, Yutaka Umeda, Hirotaka Hayashi, Yoshiro Aoki, Takanori Tsunashima
  • Patent number: 9383880
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: July 5, 2016
    Assignee: Japan Display Inc.
    Inventors: Yoshiro Aoki, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Publication number: 20160132159
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: January 14, 2016
    Publication date: May 12, 2016
    Applicant: JAPAN DISPLAY INC.
    Inventors: Yoshiro AOKI, Takashi NAKAMURA, Masahiro TADA, Hirotaka HAYASHI, Makoto SHIBUSAWA, Yutaka UMEDA, Miyuki ISHIKAWA
  • Patent number: 9262030
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: February 16, 2016
    Assignee: Japan Display Inc.
    Inventors: Yoshiro Aoki, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Publication number: 20150380560
    Abstract: According to one embodiment, a semiconductor device includes contact holes passing through a source region of a drain region of an interlayer insulating film and oxide semiconductor layer to reach an insulating substrate, wherein a source electrode and a drain electrode are formed inside the contact holes, respectively.
    Type: Application
    Filed: May 29, 2015
    Publication date: December 31, 2015
    Applicant: Japan Display Inc.
    Inventors: Miyuki ISHIKAWA, Arichika ISHIDA, Masayoshi FUCHI, Hajime WATAKABE, Takashi OKADA
  • Patent number: 9176616
    Abstract: In one embodiment, a display device having a touch function includes an insulating substrate and a plurality of pixels formed on the insulating substrate and arranged in a matrix of rows and columns. The pixels form a plurality of pixel blocks formed of a plurality of rows and columns of the pixels. A sensor circuit is arranged in a space between adjacent pixels on the insulating substrate and includes a coupling electrode, a detection electrode arranged adjacent to the coupling electrode for forming a coupling capacitance therebetween, and a reading-out circuit to read out a potential of the detection electrode. At least one sensor circuit is arranged in each pixel block. The contact or non-contact by a fingertip or a nib is detected by a potential difference of the detection electrode.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: November 3, 2015
    Assignee: JAPAN DISPLAY, INC.
    Inventors: Takashi Nakamura, Satoru Tomita, Masayoshi Fuchi, Hirotaka Hayashi, Takayuki Imai, Takashi Okada, Takahiko Endo, Miyuki Ishikawa, Masahiro Tada, Yasuo Saruhashi, Keiichi Saito, Hideyuki Takahashi
  • Publication number: 20150097810
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Applicant: Japan Display Inc.
    Inventors: Yoshiro AOKI, Takashi NAKAMURA, Masahiro TADA, Hirotaka HAYASHI, Makoto SHIBUSAWA, Yutaka UMEDA, Miyuki ISHIKAWA
  • Publication number: 20140333852
    Abstract: According to one embodiment, a display device includes a display panel having a counter substrate, an array substrate and a liquid crystal layer held therebetween, a counter electrode provided on the counter substrate, a pixel electrode arranged on the array substrate in a matrix, a sensor circuit arranged between rows of the plurality of pixel electrodes and configured to read out intensity of capacitive coupling between the sensor circuit and a dielectric, and a counter electrode drive circuit configured to pulsatively drive a common voltage added to the counter electrode during a period of driving the sensor circuit, wherein the sensor circuit comprises a detection electrode configured to form capacitance between the sensor circuit and the dielectric and to form capacitance between the sensor circuit and the counter electrode, and wherein the counter electrode comprises an aperture including at least a portion opposed to the detection electrode.
    Type: Application
    Filed: April 21, 2014
    Publication date: November 13, 2014
    Applicant: Japan Display Inc.
    Inventors: Miyuki ISHIKAWA, Masahiro Tada, Takashi Nakamura, Yutaka Umeda, Hirotaka Hayashi, Yoshiro Aoki, Takanori Tsunashima
  • Patent number: 8872793
    Abstract: According to one embodiment, a sensor module includes a first sensor circuit, a second sensor circuit and a differential circuit. The first sensor circuit includes a first detection electrode, a first amplifier formed of a thin-film transistor and a first coupling capacitor. The second sensor circuit includes a second detection electrode, a second amplifier formed of a thin-film transistor and a second coupling capacitor. The differential circuit is connected to the drain electrode of the first amplifier and the drain electrode of the second amplifier.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: October 28, 2014
    Assignee: Japan Display Inc.
    Inventors: Masahiro Tada, Takashi Nakamura, Hirotaka Hayashi, Masayoshi Fuchi, Takahiko Endo, Miyuki Ishikawa, Takashi Okada, Takayuki Imai, Satoru Tomita, Yasuo Saruhashi
  • Publication number: 20130187888
    Abstract: According to one embodiment, a display device includes, a module which divides a display surface of the display device into a plurality of regions composed of a plurality of display pixels and a plurality of sensor circuits and which causes a part of the sensors in each of the regions to perform a normal operation of reading the magnitude of capacitive coupling, a module which causes the other sensor circuits in the same region to perform a correction operation of not reading the magnitude of capacitive coupling, and a module which determines the magnitude of capacitive coupling using the difference between output signals from the sensor circuits that perform the normal operation in the corresponding regions and output signals from the sensor circuits that perform the correction operation.
    Type: Application
    Filed: December 21, 2012
    Publication date: July 25, 2013
    Inventors: Satoru TOMITA, Masahiro Tada, Takashi Okada, Hideyuki Takahashi, Miyuki Ishikawa, Takashi Nakamura
  • Publication number: 20130002603
    Abstract: According to one embodiment, a sensor module includes a first sensor circuit, a second sensor circuit and a differential circuit. The first sensor circuit includes a first detection electrode, a first amplifier formed of a thin-film transistor and a first coupling capacitor. The second sensor circuit includes a second detection electrode, a second amplifier formed of a thin-film transistor and a second coupling capacitor. The differential circuit is connected to the drain electrode of the first amplifier and the drain electrode of the second amplifier.
    Type: Application
    Filed: June 18, 2012
    Publication date: January 3, 2013
    Inventors: Masahiro Tada, Takashi Nakamura, Hirotaka Hayashi, Masayoshi Fuchi, Takahiko Endo, Miyuki Ishikawa, Takashi Okada, Takayuki Imai, Satoru Tomita, Yasuo Saruhashi
  • Publication number: 20120044176
    Abstract: In one embodiment, a display device having a touch function includes an insulating substrate and a plurality of pixels formed on the insulating substrate and arranged in a matrix of rows and columns. The pixels form a plurality of pixel blocks formed of a plurality of rows and columns of the pixels. A sensor circuit is arranged in a space between adjacent pixels on the insulating substrate and includes a coupling electrode, a detection electrode arranged adjacent to the coupling electrode for forming a coupling capacitance therebetween, and a reading-out circuit to read out a potential of the detection electrode. At least one sensor circuit is arranged in each pixel block. The contact or non-contact by a fingertip or a nib is detected by a potential difference of the detection electrode.
    Type: Application
    Filed: August 10, 2011
    Publication date: February 23, 2012
    Applicant: Toshiba Mobile Display Co., Ltd.
    Inventors: Takashi Nakamura, Satoru Tomita, Masayoshi Fuchi, Hirotaka Hayashi, Takayuki Imai, Takashi Okada, Takahiko Endo, Miyuki Ishikawa, Masahiro Tada, Yasuo Saruhashi, Keiichi Saito, Hideyuki Takahashi
  • Patent number: 7800594
    Abstract: In order to enhance accuracy of determination as to whether an object has contacted a screen and to enhance accuracy of calculation of a coordinate position of the object, edges of an imaged image are detected by an edge detection circuit 76, and by using the edges, it is determined by a contact determination circuit 77 whether or not the object has contacted the screen. Moreover, in order to appropriately control sensitivity of optical sensors in response to external light, by a calibration circuit 93, a drive condition of the optical sensors is changed based on output values of the optical sensors, which are varied in response to the external light.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: September 21, 2010
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Takayuki Imai, Masahiro Yoshida, Miyuki Ishikawa, Hirotaka Hayashi, Toshinori Kanuma
  • Patent number: 7675508
    Abstract: In order to prevent reduction in performance due to variations in illuminance of external light, a liquid crystal display unit includes: a pixel section including pixels arranged at each of intersections where a plurality of scanning lines and a plurality of signal lines intersect, and optical sensor circuits provided to at least part of the pixels; an imaging section which generates a multi-gradation image based on detection results of the optical sensor circuits; and a gradient value calculation section which calculates a gradient value which is a ratio of a variation in a gradation tendency value of the multi-gradation image to a variation in sensitivity of the optical sensor circuits.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: March 9, 2010
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takayuki Imai, Takashi Nakamura, Miyuki Ishikawa, Hideaki Mori
  • Patent number: 7545371
    Abstract: A display device has a pixel array part having display elements provided inside of pixels formed in vicinity of cross points of signal lines and scanning lines aligned in matrix form; image capture circuits provided corresponding to the display elements, each including an optical sensor which picks up image at prescribed range of an imaging subject; and an image capture processing unit which generates ultimate image capture data based on result of having picked up images a plurality of times while changing image capture condition except for display color, with respect to each of M kinds of display colors.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: June 9, 2009
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Masahiro Yoshida, Miyuki Ishikawa
  • Patent number: 7522149
    Abstract: A liquid crystal display apparatus according to the present invention includes a pixel array unit 1 having signal lines and scanning lines respectively arranged side by side, a signal line drive circuit 2 which drives the signal lines, a scanning line drive circuit 3 which drives the scanning lines, a signal processing output circuit 4 which serially outputs the picked-up image data supplied from the sensors, and a sync signal generation circuit 5. A black-white change obtained in the picked-up image data when a finger is brought close to or brought into contact with the pixel array unit 1 is detected, and the coordinate position of the finger is identified taking the ambient brightness into consideration. Regardless of whether the surroundings are bright or dark, therefore, the coordinate position can be detected with high precision.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: April 21, 2009
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Masahiro Yoshida, Hirotaka Hayashi, Miyuki Ishikawa, Yasuharu Tanaka
  • Publication number: 20070182723
    Abstract: A display device includes a plurality of scan lines and each of a plurality of signal lines which are provided intersecting to each other; a plurality of display sections each disposed at an intersection of each of the plurality of scan lines and each of the plurality of signal lines; and a plurality of photo receivers each provided corresponding to each of the plural display sections so that the number of the disposed photo receivers would monotonically increase as the sizes of the photo receivers increase.
    Type: Application
    Filed: January 17, 2007
    Publication date: August 9, 2007
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takayuki Imai, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Hiroki Nakamura, Miyuki Ishikawa, Masahiro Yoshida