Patents Assigned to Japan Display Inc.
  • Patent number: 8879030
    Abstract: A transmitting liquid crystal display apparatus includes a liquid crystal panel including a pair of substrates, a pair of polarizers arranged adjacent to the pair of substrates respectively, a liquid crystal layer held between the pair of substrates, and electrodes arranged on at least one of the pair of substrates and serving to apply an electric field to the liquid crystal layer; and a light source unit arranged external to the pair of substrates, in which each of the pair of polarizers has an absorption axis along with an extraordinary wave axis of molecules constituting the polarizers. In this apparatus, a dye layer having a disc-form molecular structure is arranged between the polarizer and the substrate, or adjacent to the polarizer in proximity to the viewer. The dye layer has a transmission axis along with the extraordinary wave axis of the disc-form molecular structure.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: November 4, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yuka Utsumi, Katsumi Kondo, Yasushi Tomioka
  • Patent number: 8878185
    Abstract: In order to improve the transmissivity of each pixel and the brightness of a high-definition screen, a TFT and a projection are disposed in each pixel, a source electrode of the TFT extends so as to cover the projection, an inorganic passivation film is formed over the TFT and the projection, an organic passivation film is formed on the inorganic passivation film on the TFT, an opposed electrode is formed on the organic passivation film, an upper insulation film is formed over the opposed electrode, a pixel electrode is formed on the upper insulation film, and the pixel electrode is connected to the source electrode through a connection hole formed in the inorganic passivation film and the upper insulation film on the projection. Accordingly, the diameter of a through-hole can be made smaller.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: November 4, 2014
    Assignee: Japan Display Inc.
    Inventors: Toshimasa Ishigaki, Fumio Takahashi, Hideki Kuriyama
  • Patent number: 8878815
    Abstract: A display device includes pixel electrodes formed in an image display area of a substrate, a common electrode formed in the image display area, inside signal lines formed inside the image display area, and electrically connected to the pixel electrodes, outside signal lines formed outside the image display area, and electrically connected to the inside signal lines, and a common line formed inside and outside the image display area, and electrically connected to the common electrode. An image is displayed under a control of a light using an electric field developed between the pixel electrodes and the common electrode. A coupling capacitance is formed between the inside signal lines and the common electrode. The outside signal lines each include a first portion, and a second portion higher in electric resistance than the first portion and the inside signal lines.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: November 4, 2014
    Assignee: Japan Display Inc.
    Inventors: Takayuki Suzuki, Hiroyuki Abe, Masahiro Maki, Mitsuru Goto
  • Patent number: 8879041
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including an insulative substrate, a first electrically conductive layer, a second electrically conductive layer, a third electrically conductive layer, a fourth electrically conductive layer. The first electrically conductive layer includes a gate line located on the insulative substrate, a common potential line and a first pad portion. The second electrically conductive layer includes a common electrode which is located on the insulative substrate and is put in contact with the common potential line, and a second pad portion stacked on the first pad portion. The fourth electrically conductive layer includes a pixel electrode in which a slit facing the common electrode is formed, and a third pad portion which is put in contact with the second pad portion.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: November 4, 2014
    Assignee: Japan Display Inc.
    Inventor: Shin Morita
  • Patent number: 8877303
    Abstract: To form an optical alignment film having large anchoring strength and suppress an AC afterimage of a liquid crystal display device, in a liquid crystal display device of an IPS mode. In an alignment film material subjected to optical alignment processing, polyimide which becomes a rigid high molecule and polyimide which becomes a flexible high molecule are mixed and used. The material of the present invention can easily rotate oligomer after irradiating polarized ultraviolet rays and improve a UV-absorbed two-color ratio of an alignment film. Accordingly, an anchoring strength for liquid crystals by the alignment film is large to suppress an AC afterimage.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: November 4, 2014
    Assignee: Japan Display Inc.
    Inventors: Shoichi Uchino, Noboru Kunimatsu
  • Patent number: 8878428
    Abstract: A display device of the invention includes: a self-light-emitting display panel including a first substrate and a second substrate; a first heat-shrinkable film for anti-reflection bonded to a surface of the first substrate on the side opposite to the second substrate and having different shrinkage rates depending on directions; and a second heat-shrinkable film bonded to a surface of the second substrate on the side opposite to the first substrate and having different shrinkage rates depending on directions, wherein a first shrinkage direction that is a direction having a highest shrinkage rate among directions in which the first heat-shrinkable film shrinks is the same as a second shrinkage direction that is a direction having a highest shrinkage rate among directions in which the second heat-shrinkable film shrinks.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: November 4, 2014
    Assignee: Japan Display Inc.
    Inventors: Tohru Sasaki, Tomoki Nakamura, Yasuyuki Yamada, Toshihiro Sato
  • Patent number: 8878768
    Abstract: Provided is a display device that includes a display panel; and a touch panel integrated in the display panel, wherein the touch panel has a plurality of scanning electrodes, a plurality of detection electrodes that intersects with the plurality of scanning electrodes, drive signal supply unit for inputting a drive signal to each of the scanning electrodes, detection unit for acquiring a detection signal from each of the detection electrodes, touch position detection unit for detecting a touch position of an detection object based on the detection signal when the drive signal is sequentially input to each of the scanning electrodes from the drive signal supply unit, and approach detection unit for detecting that the detection object approaches the touch panel based on the detection signal when a scanning voltage is collectively input to all of the scanning electrodes from the drive signal supply unit.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: November 4, 2014
    Assignee: Japan Display Inc.
    Inventors: Koji Nagata, Koji Doi
  • Publication number: 20140320754
    Abstract: According to one embodiment, a projection type liquid crystal display device includes a liquid crystal display panel and a bezel. The liquid crystal display panel includes an array substrate, an opposed substrate, and a liquid crystal layer provided between the array substrate and the opposed substrate. The liquid crystal display panel has a first surface on one side of the array substrate and the opposed substrate, and a second surface on another side of the array substrate and the opposed substrate. The bezel covers a part of the liquid crystal panel. The bezel includes a first opening provided on a side of the first surface and a second opening provided on a side of the second surface. The second opening has a larger size than the first opening.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 30, 2014
    Applicant: JAPAN DISPLAY INC.
    Inventor: Fumiaki NIHEI
  • Publication number: 20140320795
    Abstract: Pixel electrodes each include a pixel plane portion expanded along a surface of the substrate, and a pixel wall portion rising up from the pixel plane portion. Common electrodes each include a common plane portion expanded along a surface of the substrate, and a common wall portion rising up from the common plane portion so as to face the pixel wall portion. Each of the compartment areas has the pixel wall portion on one of right and left sides in the lateral direction, and has the common wall portion on the other of the right and left sides. Molecules of the liquid crystal material are tilted up from the pixel wall portions in a direction of the common wall portion by the electric field. The respective pixel wall portions of the adjacent compartment areas are positioned on opposite sides to each other in the lateral direction.
    Type: Application
    Filed: March 24, 2014
    Publication date: October 30, 2014
    Applicant: Japan Display Inc.
    Inventors: Takato HIRATSUKA, Osamu ITOU, Daisuke SONODA, Toshimasa ISHIGAKI
  • Publication number: 20140320791
    Abstract: A pixel electrode formed into a slit structure with striped electrodes opposed to each other for a zero rubbing angle can provide fast response since rotational directions of the liquid crystals become opposite at both sides of the slit in the striped electrodes. The electrode structure, however, poses a problem of low transmittance. Provided is a liquid crystal display device of IPS-Pro scheme including a pixel electrode with one pair of striped electrodes. The first striped electrode includes a short electrode section and long electrode sections, and the second striped electrode also includes a short electrode section and long electrode sections. The long electrode sections of the first striped electrode are disposed adjacently to those of the second striped electrode. Liquid crystals are aligned in a lengthwise direction of the striped electrodes.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 30, 2014
    Applicant: Japan Display Inc.
    Inventors: Mika OIWA, Shinichiro OKA, Toshiharu MATSUSHIMA
  • Publication number: 20140320551
    Abstract: A display device allows an optimal display mode to be selected in accordance with the form of use, so that the total power consumption is decreased. The display device includes an organic EL display panel for displaying a monochromatic image; and a color shutter glass unit including a pair of shutters. The pair of shutters are each controllable to be in a light transmissive state for a first color, a second color and a third color or in a light non-transmissive state. The pair of shutters corresponding to left and right glasses are each controllable in synchronization with display of an image on the organic EL display panel, so that one of a monochromatic image display mode, a color image display mode, a monochromatic three-dimensional image display mode, and a color three-dimensional image display mode is selected.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 30, 2014
    Applicant: Japan Display Inc.
    Inventor: Nobuhiro TAKEDA
  • Publication number: 20140320760
    Abstract: According to an aspect, a display device with a touch detecting function includes: a display area in which pixels each composed of a plurality of color areas are arranged in a matrix; a touch detection electrode including a first conductive thin wire extending in a first direction; and a dummy electrode including a plurality of second conductive thin wires; a drive electrode having capacitance for the touch detection electrode. Each of the second conductive thin wires includes a plurality of thin wire pieces extending in a direction different from the first direction and is divided by a slit between the thin wire pieces. A color area in the display area with which the slit overlaps has a different color from a color area in the display area with which a slit closest to the slit in a second direction orthogonal to the first direction overlaps.
    Type: Application
    Filed: March 19, 2014
    Publication date: October 30, 2014
    Applicant: Japan Display Inc.
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Takeo KOITO
  • Publication number: 20140319528
    Abstract: According to one embodiment, a flat-panel display device includes a first substrate including an output pad to which a signal necessary for displaying an image on an active area is supplied from a signal supply source, a dummy pad juxtaposed with the output pad, a signal line connected to the output pad, a switching element connected to the signal line, a pixel electrode connected to the switching element in the active area, a first dummy line connected to the dummy pad, spaced apart from the signal line and including a first projection protruding in a direction crossing a direction of extension of the first dummy line, and a second dummy line spaced apart from the dummy pad and the signal line and including a second projection opposed to the first projection.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 30, 2014
    Applicant: JAPAN DISPLAY INC.
    Inventors: Masato KESHO, Kazuhiro Takahashi, Masanobu Nonaka
  • Publication number: 20140320793
    Abstract: A liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a gate line and an auxiliary capacitance line extending in a first direction, a source line extending in a second direction orthogonally crossing the first direction, and a pixel electrode having a main pixel electrode arranged on the auxiliary capacitance line and extending in the first direction. The second substrate includes a common electrode having a main common electrode arranged above the gate line and extending in the first direction. A liquid crystal layer is held between the first substrate and the second substrate having liquid crystal molecules. The liquid crystal molecules are initially aligned in the first direction in a splay alignment state between the first substrate and the second substrate in a state where electric field is not formed between the pixel electrode and the common electrode.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 30, 2014
    Applicant: JAPAN DISPLAY, INC.
    Inventor: Jin HIROSAWA
  • Patent number: 8873016
    Abstract: A method for manufacturing a liquid crystal display device by applying a sealant using a dispenser to form plural seal patterns on a first substrate in a matrix, dropping liquid crystal, bonding a second substrate to the first substrate, and then cutting into individual liquid crystal display devices. A process of forming the seal patterns in a matrix includes (1) a first step of sequentially applying a sealant to one long side and one short side out of four sides of a seal pattern of each liquid crystal display device with a single stroke, and (2) a second step of sequentially applying the sealant to the remaining long side and the remaining short side out of the four sides of the seal pattern of each liquid crystal display device with a single stroke.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: October 28, 2014
    Assignee: Japan Display Inc.
    Inventor: Takashi Yamamoto
  • Patent number: 8873006
    Abstract: The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: October 28, 2014
    Assignee: Japan Display Inc.
    Inventors: Noboru Kunimatsu, Masaki Matsumori, Hidehiro Sonoda, Yasushi Tomioka, Toshiki Kaneko
  • 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
  • Patent number: 8873009
    Abstract: A liquid crystal display device includes first and second substrates. The first substrate includes a pixel electrode covered by a first alignment film and having a belt-shaped main pixel electrode. The first alignment film is alignment processed in a first alignment treatment direction substantially in parallel with an extending direction of the main pixel electrode. The second substrate includes a common electrode arranged on both sides sandwiching the pixel electrode and extending substantially in parallel with the extending direction of the main pixel electrode. A sub-common electrode extends in a direction crossing the extending direction of the main pixel electrode on one end side of the main pixel electrode located on a starting side of the first alignment treatment direction. A second alignment film is processed in a second alignment treatment direction substantially in the same direction as the first alignment treatment direction.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: October 28, 2014
    Assignee: Japan Display Inc.
    Inventor: Jin Hirosawa
  • Patent number: 8873008
    Abstract: In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a first source line and a second source line extending in a first direction, a main pixel electrode arranged between the first source line and a second source line and extending in the first direction, and a pair of first main common electrodes arranged on the first source line and the second source line interposing an insulating layer and extending in the first direction, respectively. The second substrate includes a pair of second main common electrode arranged above the first main common electrode and extending in the first direction, and the first main common electrode is connected with the second main common electrode. A liquid crystal layer is held between the first substrate and the second substrate.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: October 28, 2014
    Assignee: Japan Display Inc.
    Inventors: Koji Yamamoto, Jin Hirosawa
  • Patent number: 8873010
    Abstract: According to one embodiment, a device includes a first substrate including a gate line, a source line which extends to intersect with the gate line, a pixel electrode which includes a primary pixel electrode extending substantially parallel to the source line, and a switching element located at the intersection of the gate line and the source line, a second substrate includes a common electrode which extends substantially parallel to the primary pixel electrode on both sides across the primary pixel electrode, and a liquid crystal layer including liquid crystal molecules held between the first and second substrates. The switching element includes a drain line which is electrically connected to the pixel electrode and which is located to overlap the gate line.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: October 28, 2014
    Assignee: Japan Display Inc.
    Inventors: Masakatsu Kitani, Jin Hirosawa