Patents by Inventor Yuzuru Kanemori

Yuzuru Kanemori 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: 6275274
    Abstract: The reflective liquid crystal display device of this invention includes: a pair of substrates sandwiching a liquid crystal layer therebetween; a plurality of pixel electrodes having a delta arrangement formed on one of the pair of substrates; a plurality of signal lines formed on the one of the pair of substrates, the signal lines having bent portions; a plurality of scanning lines formed on the one of the pair of substrates, the plurality of scanning lines and signal lines being formed to run along peripheries of the plurality of pixel electrodes so as to cross each other; and a plurality of thin film transistors electrically connected to the plurality of signal lines for controlling potentials of the pixel electrodes, wherein at least one of the plurality of thin film transistors is formed at a position where the distance between two adjacent signal lines of the plurality of signal lines is reduced by the bent portion of at least one of the two adjacent signal lines.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: August 14, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuzuru Kanemori, Kazuhiko Tsuda, Kozo Nakamura
  • Patent number: 6268895
    Abstract: A liquid crystal display device of the present invention includes: an active matrix substrate; a counter substrate; and a liquid crystal layer interposed between the active matrix substrate and the counter substrate, wherein the active matrix substrate includes a plurality of switching elements, a plurality of pixel electrodes, gate lines for supplying a control signal to the switching elements, and source lines for supplying a data signal to the switching elements, the gate lines and the source lines crossing each other, and the pixel electrodes being connected to the respective source lines through the switching elements, the counter substrate includes a counter electrode opposed to the plurality of pixel electrodes through the liquid crystal layer, the plurality of pixel electrodes, the counter electrodes and the liquid crystal layer interposed therebetween form a plurality of pixel regions, and wherein the liquid crystal display device includes a display region including the plurality of pixel regions and
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: July 31, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takayuki Shimada, Yuzuru Kanemori, Mikio Katayama, Shinya Tanaka, Takashi Ochi
  • Patent number: 6072559
    Abstract: The active matrix display device of this invention includes: a substrate and a scanning line running in a first direction formed in a first layer located above the substrate. The display device also includes a signal line running in a second direction formed in a second layer located above the substrate; a switching element connected with the scanning line and the signal line; an insulating film formed above the scanning line, the signal line, and the switching element; and a pixel electrode formed above the insulating film so as to connect with the switching element, wherein the active matrix display device further comprises an extension line connected with an electrode of the switching element, the extension line being formed in the second layer so as not to intersect the signal line.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: June 6, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuzuru Kanemori, Atsushi Ban, Mikio Katayama
  • Patent number: 5995178
    Abstract: The active matrix liquid crystal panel of this invention includes: a plurality of scanning lines and a plurality of signal lines arranged to cross each other; a plurality of pixel electrodes arranged in respective regions defined by the plurality of scanning lines and the plurality of signal lines; and a plurality of switching elements for driving the plurality of pixel electrodes, wherein each of the plurality of pixel electrodes overlaps at least one of the adjacent scanning lines and signal lines among the plurality of scanning lines and signal lines via an insulating film, and at least one of the plurality of pixel electrodes is electrically connected with the overlapped line.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: November 30, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Fujikawa, Yoshiharu Kataoka, Masaya Okamoto, Mikio Katayama, Katsumi Irie, Yuzuru Kanemori, Akihiro Yamamoto
  • Patent number: 5986738
    Abstract: The transmission type liquid crystal display device of this invention includes: gate lines; source lines; and switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein an interlayer insulating film formed of an organic film with high transparency and having a plurality of microscopic hollows formed in each pixel is provided above the switching element, the gate line, and the source line, and wherein the pixel electrode formed of a transparent conductive film is provided on the interlayer insulating film.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: November 16, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasunobu Tagusa, Takayuki Shimada, Yuzuru Kanemori, Masaya Okamoto, Mikio Katayama
  • Patent number: 5946065
    Abstract: The transmission type liquid crystal display device of this invention includes: gate lines; source lines; and switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein an interlayer insulating film formed of an organic film with high transparency and having a plurality of microscopic hollows formed in each pixel is provided above the switching element, the gate line, and the source line, and wherein the pixel electrode formed of a transparent conductive film is provided on the interlayer insulating film.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: August 31, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasunobu Tagusa, Takayuki Shimada, Yuzuru Kanemori, Masaya Okamoto, Mikio Katayama
  • Patent number: 5910829
    Abstract: A liquid crystal display device includes: first and second substrates opposing each other; a liquid crystal layer interposed between the first and second substrates; a plurality of scanning lines and a plurality of signal lines formed on the first substrate so as to cross each other, the scanning lines and the signal lines defining a plurality of pixel regions arranged in a matrix; a plurality of switching elements each provided in one of the pixel regions in a vicinity of an intersection of the scanning lines and the signal lines; a color filter provided on the second substrate, the color filter including a plurality of colored portions; and a light blocking layer provided on the second substrate, the light blocking layer being formed of at least one of materials that are used for the plurality of colored portions.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: June 8, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takayuki Shimada, Yuzuru Kanemori, Mikio Katayama, Shinya Tanaka, Masumi Kubo
  • Patent number: 5870157
    Abstract: A liquid crystal display device of the present invention includes: a active matrix substrate; a liquid crystal layer; and a counter substrate opposing the active matrix substrate with the liquid crystal layer interposed therebetween. The active matrix substrate includes a plurality of scanning lines, a plurality of signal lines crossing the scanning lines, a plurality of switching elements each provided near a crossing of each scanning line and each signal line, an insulating film, and a plurality of pixel electrodes at least partially overlapping the scanning lines and the signal lines with the insulating film interposed therebetween. The counter substrate includes a plurality of color filters. Adjoining color filters of different colors on the counter substrate at least partially overlap each other at a position corresponding to a boundary between adjoining pixel electrodes on the active matrix substrate.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: February 9, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takayuki Shimada, Yuzuru Kanemori, Mikio Katayama
  • Patent number: 5867139
    Abstract: A liquid crystal display device is formed by arranging a plurality of scanning lines 3.sub.1, 3.sub.2, . . . to which scanning signals are successively applied and a plurality of signal lines 4.sub.1, 4.sub.2, . . . to which data signals are successively applied to intersect at right angles. Mounted in the vicinity of each of the intersections of the scanning lines 3.sub.1, 3.sub.2, . . . and signal lines 4.sub.1, 4.sub.2, . . . are a TFT 5 electrically connected to both of the lines, and a pixel electrode 6 connected to the TFT 5. A common electrode is placed to face the pixel electrode 6 with liquid crystals 2 therebetween. One of electrodes of a pixel capacitance formed by the pixel electrode 6 is connected to a common line 9 for supplying a common signal to the common electrode 7. A dummy scanning line 3.sub.0 for forming a capacitance is arranged outside of the scanning line 3.sub.1 located at the outermost position on a scanning start side of scanning signal.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: February 2, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinya Tanaka, Takayuki Shimada, Takashi Ochi, Yuzuru Kanemori, Mikio Katayama
  • Patent number: 5859683
    Abstract: A transmissive liquid crystal display apparatus includes a liquid crystal layer interposed between a first substrate and a second substrate. The first substrate includes gate lines, source lines and switching devices provided in a vicinity of intersectional portions of the gate lines and the source lines. The switching devices include gate electrodes connected to the gate lines, source electrodes connected to the source lines and drain electrodes connected to pixel electrodes for applying a voltage to the liquid crystal layer. An interlayer insulating film having high transparency is provided above the switching devices, the gate lines and the source lines. The interlayer insulating film has roughness on its surface. A height difference of the roughness is 50 nm or less. The pixel electrode formed of a transparent conductive material is provided on the interlayer insulating film.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: January 12, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasunobu Tagusa, Takayuki Shimada, Yuzuru Kanemori, Mikio Katayama
  • Patent number: 5818549
    Abstract: First and second gate insulating films, a semiconductor layer made of a-Si(i), and an etching stopper layer are formed to cover a gate electrode on a glass substrate. A drain electrode side contact layer and a source electrode side contact layer are made out of a-Si(n.sup.+) in such a manner to be cut off on the etching stopper layer. A disconnection preventing a-Si(n.sup.+) wire is formed below a source wire in its longitudinal direction, and atop of which a pixel electrode is formed. Since the disconnection preventing a-Si(n.sup.+) wire and source electrode side contact layer are spaced apart, static-induced characteristics deterioration of TFT and the point and line defects during the substrate fabrication sequence can be eliminated and the non-defective ratio of the display device can be improved drastically.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: October 6, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuko Maruyama, Yuzuru Kanemori
  • Patent number: 5771083
    Abstract: A liquid crystal display device incorporating an active matrix substrate having an inter-layer insulating film between a pixel electrode and gate and source signal lines. In this liquid crystal display device, the source signal line has a double-layer structure of an upper-layer line and a lower-layer line, but the upper-layer line is eliminated at the intersection of the gate signal line and the source signal line. This structure prevents a decrease in the thickness of the inter-layer insulating layer on the intersection of the gate signal line and the source signal line.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: June 23, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaki Fujihara, Yuzuru Kanemori, Masaya Okamoto
  • Patent number: 5532615
    Abstract: This invention provides an inspecting method, an inspecting apparatus, and a defect correcting method, for an active matrix substrate including: a gate bus line; a source bus line; a pixel electrode; a switching element for driving the pixel electrode; and a pair of electrodes constituting an auxiliary capacitance. The inspecting method includes: a step of disposing a counter substrate having a face on which a counter electrode is formed so that the face faces the active matrix substrate with a liquid crystal layer interposed therebetween, and connecting signal supplying terminals to gate bus lines and source bus lines and the counter electrode; and a detection step of detecting a defect on the active matrix substrate by performing at least one of a first signal generating step, a second signal generating step, and a third signal generating step.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: July 2, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Naofumi Kondo, Mikio Katayama, Masaya Okamoto, Makoto Miyago, Kiyoshi Nakazawa, Yuzuru Kanemori, Makoto Tachibana
  • Patent number: 5508591
    Abstract: An active display device, comprising: a plurality of source buses and a plurality of gate buses; a plurality of pixel electrodes, said pixel electrodes each having associated therewith a switching element for delivering a drive signal to said pixel electrode from at least one of said source buses as a function of a signal provided by at least one of said gate buses; and means other than said switching elements for selectively electrically connecting at least one of said pixel electrodes to a corresponding one of said source buses in the event said at least one pixel electrode is considered to be defective.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: April 16, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuzuru Kanemori, Mikio Katayama, Kiyoshi Nakazawa, Naofumi Kondo, Masaya Okamoto, Hiroaki Kato, Kozo Yano, Katsumi Irie, Kumiko Otsu, Hiroshi Fujiki, Toshiaki Fujihara, Hideji Marumoto, Hidenori Negoto, Kazuyori Mitsumoto
  • Patent number: 5469025
    Abstract: An active matrix display device which includes a first and a second insulating substrates, a gate bus an adjacent gate bus, and a source bus arranged on the first substrate, a pixel electrode in a segment enclosed by the gate and the source buses, a switching element connected to the pixel electrode, the gate bus and the source bus, wherein the source bus comprises a projection extending toward the pixel electrode so as to be electrically disconnected therefrom, and the adjacent gate bus comprises a projection extending toward the pixel electrode, the source bus being overlaid on the adjacent gate bus projection with an insulating layer sandwiched therebetween, the adjacent gate bus projection being provided with an electroconductive member at the top thereof with an insulating layer sandwiched therebetween, the electroconductive member being electrically connected to the pixel electrode, and electrically disconnected from the source bus projection.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: November 21, 1995
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuzuru Kanemori, Mikio Katayama, Kiyoshi Nakazawa, Naofumi Kondo, Masaya Okamoto, Hiroaki Kato, Kozo Yano, Katsumi Irie, Kumiko Otsu, Hiroshi Fujiki, Toshiaki Fujihara, Hideji Marumoto, Hidenori Negoto, Kazuyori Mitsumoto
  • Patent number: 5463230
    Abstract: An active matrix board comprising pixel electrodes arranged in a matrix fashion on an insulating substrate, and scan lines each having an addition capacity electrode placed in a superposed relation with a portion of a corresponding one of the pixel electrodes, said scan lines each comprising a first scan line formed in an area other than the area in which said addition capacity electrode is held in a superposed relation with said pixel electrode, and a second scan line formed to cover said first scan line and having said addition capacity electrode as its part, whereby the possibility of pixel defect occurrence is reduced and the production yield of display apparatuses is improved.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: October 31, 1995
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hidenori Negoto, Mikio Katayama, Kiyoshi Nakazawa, Hiroaki Kato, Yuzuru Kanemori, Takayoshi Nagayasu
  • Patent number: 5434686
    Abstract: An active matrix display device comprising two pixel electrodes in each rectangular area defined by adjacent signal lines and adjacent scanning lines. The pixel electrodes disposed across each signal line are connected with respective switching elements, which are connected to the common scanning line and the common signal line. In this way, each pixel electrode has only one signal line formed on one side thereof. As a result, a line defect conventionally produced by a leakage between adjacent signal lines through a pixel electrode is prevented. Further, a defective pixel can be easily corrected by short-circuiting the pixel electrode with the adjacent signal line.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: July 18, 1995
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuzuru Kanemori, Akihiko Imaya, Hiroaki Kato, Kozo Yano, Katsumi Irie
  • Patent number: 5410164
    Abstract: A display elect:rode substrate comprising at least two, first and second, TFTs connected in series to each picture element, wherein the first and second thin film transistors are Juxtaposed on the same one of the gate bus lines, part of the gate bus line functions as gate electrodes of the first and second thin film transistors, a source electrode of the first thin film transistor is connected to the source bus line, a drain electrode of the first thin film transistor is connected to a source electrode of the second thin film transistor, and a drain electrode of the second thin film transistor is connected to the picture element electrode, whereby a picture element defect caused by a short-circuit defect of the TFTs can be reduced.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: April 25, 1995
    Assignee: Sharp Kabushimi Kaisha
    Inventors: Mikio Katayama, Yuzuru Kanemori, Hirohisa Tanaka, Hiroshi Morimoto, Hidenori Negoto
  • Patent number: 5343216
    Abstract: An active matrix substrate comprising picture element electrodes disposed in a matrix on a substrate, each of which is composed of divided electrodes, and an electrically conductive film on which two of said divided electrodes adjacent to each other are superposed in a manner to sandwich an insulating film therebetween so as to form a connection. The connection is irradiated with laser beams from the outside of the display apparatus when one of the divided electrodes brings about a picture element defect, so that both the divided electrodes can be electrically connected to each other, thereby attaining a correction of the picture element defect. A display apparatus using the active matrix substrate is also provided.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: August 30, 1994
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mikio Katayama, Hiroaki Kato, Takayoshi Nagayasu, Akihiko Imaya, Hidenori Negoto, Yuzuru Kanemori, Toshihiko Hirobe
  • Patent number: RE40771
    Abstract: A liquid crystal display device is formed by arranging a plurality of scanning lines 31, 32, . . . to which scanning signals are successively applied and a plurality of signal lines 41, 42, . . . to which data signals are successively applied to intersect at right angles. Mounted in the vicinity of each of the intersections of the scanning lines 31, 32, . . . and signals lines 41, 42, . . . are a TFT 5 electrically connected to both of the lines, and a pixel electrode 6 connected to the TFT 5. A common electrode is placed to face the pixel electrode 6 with liquid crystals 2 therebetween. One of electrodes of a pixel capacitance formed by the pixel electrode 6 is connected to a common line 9 for supplying a common signal to the common electrode 7. A dummy scanning line 30 for forming a capacitance is arranged outside of the scanning line 31 located at the outermost position on a scanning start side of scanning signal.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: June 23, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinya Tanaka, Takayuki Shimada, Takashi Ochi, Yuzuru Kanemori, Mikio Katayama