Patents by Inventor Shigesumi Araki
Shigesumi Araki 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).
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Patent number: 10012858Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first sub-pixel, a second sub-pixel, a first line and a second line extending between the first sub-pixel and the second sub-pixel with a gap therebetween, and a first alignment film as an outermost layer. The second substrate includes a second alignment film opposed to the first alignment film. Further, the first substrate includes a groove in which the first alignment has a recessed surface between the first line and the second line, and the groove is filled with the liquid crystal layer.Type: GrantFiled: May 18, 2016Date of Patent: July 3, 2018Assignee: Japan Display Inc.Inventors: Genki Asozu, Shigesumi Araki
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Publication number: 20180149938Abstract: The structure of the invention is: a pair of a first scanning line and a second scanning line extend in a first direction on the TFT substrate, a first pixel that has a first pixel electrode and a second pixel that as a second pixel electrode are formed between the pairs of the scanning lines, a connection area is formed between the first scanning line and the second scanning line; a first TFT, a first through hole that connects the first TFT with the first pixel electrode, and a second TFT, a second through hole that connects the second TFT with the second pixel electrode are formed in the connection area; the first pixel electrode and the second pixel electrode are formed on an organic passivation film; the organic passivation film is not formed in an area where the first through hole and the second through hole are formed.Type: ApplicationFiled: October 25, 2017Publication date: May 31, 2018Inventors: Genki ASOZU, Shigesumi ARAKI
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Patent number: 9983439Abstract: According to one embodiment, a wavelength converter includes a microlens which condenses excitation light, a reflective layer which is opposed to the microlens and includes an aperture, and a wavelength conversion element which is opposed to the microlens via the reflective layer, absorbs the excitation light, and emits emission light whose wavelength is different from that of the excitation light.Type: GrantFiled: June 17, 2016Date of Patent: May 29, 2018Assignee: Japan Display Inc.Inventors: Tatsuro Mizunuma, Shigesumi Araki, Hirohisa Miki
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Publication number: 20180095593Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: ApplicationFiled: December 5, 2017Publication date: April 5, 2018Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
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Patent number: 9870092Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: GrantFiled: December 21, 2016Date of Patent: January 16, 2018Assignee: Japan Display Inc.Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
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Patent number: 9857638Abstract: A display device includes a scanning line extending in a first direction and a scanning line extending in a second direction. The signal line extends in a zigzag manner in the second direction by running tilted at a first predetermined angle with respect to the second direction for every plurality of pixels and running tilted at a second predetermined angle with respect to the second direction for every plurality of pixels.Type: GrantFiled: December 31, 2015Date of Patent: January 2, 2018Assignee: Japan Display Inc.Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama
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Patent number: 9829753Abstract: A display device includes a first light shielding area where two signal lines are arranged between the opening portions of mutually adjacent sub pixels, a second light shielding area where one signal line is arranged between the opening portions of mutually adjacent sub pixels, and a third light shielding area where one scanning line is arranged between the opening portions of mutually adjacent sub pixels. The display device further includes a first spacer arranged in the first light shielding area or the second light shielding area along the extending direction of the signal line and a second spacer arranged in the third light shielding area along the extending direction of the scanning line. The first spacer and the second spacer are arranged crosswise.Type: GrantFiled: March 15, 2016Date of Patent: November 28, 2017Assignee: Japan Display Inc.Inventors: Shigesumi Araki, Toshiyuki Higano, Emi Higano
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Patent number: 9810946Abstract: According to one embodiment, a display device includes a first insulating substrate, a second insulating substrate, a first pixel electrode and a second pixel electrode, a wavelength conversion element to convert light of a first wavelength polarized in a first polarization direction into light of a second wavelength polarized in a second polarization direction, and a liquid crystal layer having a first thickness in an area opposed to the first pixel electrode, and having a second thickness greater than the first thickness in an area opposed to the second pixel electrode.Type: GrantFiled: January 11, 2016Date of Patent: November 7, 2017Assignee: Japan Display Inc.Inventors: Tatsuro Mizunuma, Shigesumi Araki, Hirohisa Miki
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Patent number: 9810828Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate, an LED, and a wavelength converter between the light guide plate and the LED. The wavelength converter includes semiconductor quantum dots in a supporter, to which a reflection film is applied except surfaces that face the LED and the light guide plate.Type: GrantFiled: September 27, 2016Date of Patent: November 7, 2017Assignee: Japan Display Inc.Inventors: Hirohisa Miki, Shigesumi Araki
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Patent number: 9784900Abstract: According to one embodiment, an illumination device including a light source unit including a light-emitting element having a light-emitting surface, a reflective surface formed around the light-emitting surface and having higher optical reflectivity than the light-emitting surface, a wavelength conversion member which converts a wavelength of emitted light from the light-emitting surface, an optical member located between the light source unit and the wavelength conversion member and including a light path adjustment mechanism which guides, to the reflective surface, light returned from the wavelength conversion member to the light-emitting surface, and a lightguide opposed to the wavelength conversion member.Type: GrantFiled: July 22, 2016Date of Patent: October 10, 2017Assignee: Japan Display Inc.Inventors: Hirohisa Miki, Shigesumi Araki
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Publication number: 20170212394Abstract: According to one embodiment, a liquid crystal display comprises first and second substrates and a liquid crystal layer. The first substrate comprises pixel electrodes and a common electrode in a display area. The display area includes a first display area and a second display area which is closer to an edge of the display area than the first display area. The pixel electrodes include first and second pixel electrodes, the first pixel electrode being located in a pixel in the first display area, the second pixel electrode being located in a pixel in the second display area. A second area by which the second pixel electrode and the common electrode face each other is greater than a first area by which the first pixel electrode and the common electrode face each other.Type: ApplicationFiled: January 25, 2017Publication date: July 27, 2017Applicant: Japan Display Inc.Inventor: Shigesumi ARAKI
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Patent number: 9709862Abstract: A liquid crystal display device includes a liquid crystal between a TFT substrate including pixels formed in a matrix, and a counter substrate. A pixel electrode is formed in an area surrounded by scanning lines and video signal lines. A common electrode is formed in a lower layer of the pixel electrode through an interlayer insulating film. A long side of the pixel electrode of a first pixel is inclined at a first angle clockwise at a right angle to the extending direction of the scanning line. A long side of the pixel electrode of a second pixel is inclined at the first angle counterclockwise at a right angle to the extending direction of the scanning line. The liquid crystal is a negative type liquid crystal. Further, a protrusion formed in the long side of the pixel electrode has a side parallel to the extending direction of the scanning line.Type: GrantFiled: January 14, 2015Date of Patent: July 18, 2017Assignee: Japan Display Inc.Inventors: Youichi Asakawa, Shigesumi Araki
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Publication number: 20170184921Abstract: A liquid crystal display device includes a liquid crystal between a TFT substrate including pixels formed in a matrix, and a counter substrate. A pixel electrode is formed in an area surrounded by scanning lines and video signal lines. A common electrode is formed in a lower layer of the pixel electrode through an interlayer insulating film. A long side of the pixel electrode of a first pixel is inclined at a first angle clockwise at a right angle to the extending direction of the scanning line. A long side of the pixel electrode of a second pixel is inclined at the first angle counterclockwise at a right angle to the extending direction of the scanning line. The liquid crystal is a negative type liquid crystal. Further, a protrusion formed in the long side of the pixel electrode has a side parallel to the extending direction of the scanning line.Type: ApplicationFiled: March 10, 2017Publication date: June 29, 2017Inventors: Youichi ASAKAWA, Shigesumi ARAKI
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Patent number: 9664959Abstract: In the case of a pixel including four and more sub pixels, the area of one pixel is larger than that in the case of a pixel including three sub pixels; therefore, high definition becomes difficult. When a central display area has a structure of four and more sub pixels, in a display device, the pixel structure in a peripheral display area for use in creating a virtual image is reduced to three sub pixels, to allocate the vacant space for high density assignment. Only the pixel density in the vicinity of a frame of a lens portion is compressed, in order to apparently resolve the discord with the image of a non-lens portion. The pixel side in the peripheral display area may be even or gradually narrowed.Type: GrantFiled: March 11, 2015Date of Patent: May 30, 2017Assignee: Japan Display Inc.Inventors: Hirohisa Miki, Shigesumi Araki
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Publication number: 20170146719Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate, an LED, and a wavelength converter between the light guide plate and the LED. The wavelength converter includes semiconductor quantum dots in a supporter, to which a reflection film is applied except surfaces that face the LED and the light guide plate.Type: ApplicationFiled: September 27, 2016Publication date: May 25, 2017Inventors: Hirohisa MIKI, Shigesumi ARAKI
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Publication number: 20170139291Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a drive circuit, a second substrate, a sealing member, and a liquid crystal layer. The first substrate includes a first trap electrode provided in a non-display area, and a first shield electrode provided in the non-display area, located closer to a display area than the first trap electrode, and located above a scanning line. The drive circuit causes a potential of the first trap electrode to differ from a potential of the first shield electrode. The sealing member located opposite to at least part of the first trap electrode.Type: ApplicationFiled: November 11, 2016Publication date: May 18, 2017Applicant: Japan Display Inc.Inventors: Genki ASOZU, Shigesumi ARAKI
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Patent number: 9632621Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: GrantFiled: May 12, 2016Date of Patent: April 25, 2017Assignee: Japan Display Inc.Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
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Publication number: 20170102600Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: ApplicationFiled: December 21, 2016Publication date: April 13, 2017Inventors: Shigesumi ARAKI, Mitsutaka OKITA, Kazuhiro NISHIYAMA, Yoshitoshi KIDA, Koji ISHIZAKI, Kohei AZUMI, Hiroshi MIZUHASHI
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Publication number: 20170023721Abstract: According to one embodiment, an illumination device including a light source unit including a light-emitting element having a light-emitting surface, a reflective surface formed around the light-emitting surface and having higher optical reflectivity than the light-emitting surface, a wavelength conversion member which converts a wavelength of emitted light from the light-emitting surface, an optical member located between the light source unit and the wavelength conversion member and including a light path adjustment mechanism which guides, to the reflective surface, light returned from the wavelength conversion member to the light-emitting surface, and a lightguide opposed to the wavelength conversion member.Type: ApplicationFiled: July 22, 2016Publication date: January 26, 2017Applicant: Japan Display Inc.Inventors: Hirohisa MIKI, Shigesumi ARAKI
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Publication number: 20170003548Abstract: According to one embodiment, a wavelength converter includes a microlens which condenses excitation light, a reflective layer which is opposed to the microlens and includes an aperture, and a wavelength conversion element which is opposed to the microlens via the reflective layer, absorbs the excitation light, and emits emission light whose wavelength is different from that of the excitation light.Type: ApplicationFiled: June 17, 2016Publication date: January 5, 2017Applicant: Japan Display Inc.Inventors: Tatsuro MIZUNUMA, Shigesumi ARAKI, Hirohisa MIKI