Patents by Inventor Kazuya Kaida
Kazuya Kaida 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: 9274371Abstract: A color conversion substrate that can improve light use efficiency is provided. A color conversion substrate includes a transparent substrate having a main surface, a plurality of phosphor patterns arranged on the main surface and each of the phosphor patterns having side faces, and a reflective film that reflects light and is formed on at least the side faces of the phosphor patterns. An air layer is defined between the main surface and the phosphor patterns.Type: GrantFiled: May 15, 2013Date of Patent: March 1, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Kazuya Kaida, Shinya Kadowaki
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Publication number: 20150131029Abstract: A color conversion substrate that can improve light use efficiency is provided. A color conversion substrate includes a transparent substrate having a main surface, a plurality of phosphor patterns arranged on the main surface and each of the phosphor patterns having side faces, and a reflective film that reflects light and is formed on at least the side faces of the phosphor patterns. An air layer is defined between the main surface and the phosphor patterns.Type: ApplicationFiled: May 15, 2013Publication date: May 14, 2015Applicant: Sharp Kabushiki KaishaInventors: Kazuya Kaida, Shinya Kadowaki
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Publication number: 20140313691Abstract: An image display device includes a light source unit emitting light, a light shutter arranged on the light source unit and selectively causing light received from the light source unit to exit therefrom, and a phosphor substrate arranged on the light shutter such that light from the light shutter enters and including a phosphor. The phosphor substrate is arranged such that the phosphor faces the light shutter. The phosphor and the light shutter are arranged to face each other with an air layer interposed therebetween.Type: ApplicationFiled: September 27, 2012Publication date: October 23, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Kazuya Kaida, Koji Yamabuchi
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Publication number: 20130002986Abstract: A display device includes: a light source unit configured to emit light from a light emitting surface; and a phosphor layer (120) having a plurality of phosphors (123R, 123G) provided on a light-emitting side of the light source unit so as to correspond to pixels, and configured to absorb the light emitted from the light source unit and produce fluorescence of a predetermined wavelength. A bottom reflective layer (125) is provided on the side of the light source unit with respect to the phosphor layer (120) at least in regions where the phosphors (123R, 123G) are formed.Type: ApplicationFiled: March 3, 2011Publication date: January 3, 2013Applicant: Sharp Kabushiki KaishaInventors: Shinya Kadowaki, Takeshi Ishida, Fumie Kunimasa, Kazuya Kaida
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Publication number: 20120268687Abstract: An light guide (12) has an indented pattern (105) on its front surface (10a) and an indented pattern (103) on its back surface (10b), and includes: a light guide plate (15) including the indented pattern (105) provided on the front surface (10a); a light distribution control part (13) including the indented pattern (103) provided on the back surface (10b); and a middle layer (14) provided between the light guide plate (15) and the light distribution control part (13), the light distribution control part (13) being less in film thickness than the light guide plate (15), and the light distribution control part (13) having a glass transition point lower than that of the light guide plate (15). This makes it possible to form indented patterns on the front surface and the back surface of an optical laminate constituted by a stack of a plurality of layers, while preventing occurrence of defects.Type: ApplicationFiled: November 29, 2010Publication date: October 25, 2012Applicant: SHARP KABUSHIKI KAISHAInventor: Kazuya Kaida
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Publication number: 20120087107Abstract: A red color filter (13R) includes a first absorbent having an absorption wavelength region in most of a low wavelength region other than the wavelength region of red light (R) emitted by fluorescence and a second absorbent having an absorption wavelength region overlapping with the wavelength region of blue light (B) included in the rest of the wavelength region other than most of the low wavelength region.Type: ApplicationFiled: March 19, 2010Publication date: April 12, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Fumie Kunimasa, Takeshi Ishida, Shinya Kadowaki, Yuhji Yashiro, Ryuzo Yuki, Tadashi Kawamura, Kazuya Kaida, Hiroaki Shigeta
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Publication number: 20120019740Abstract: Disclosed is a liquid crystal display panel wherein the utilization efficiency of light can be improved, while suppressing deterioration of the contrast. Specifically, a color filter (17) of a liquid crystal display panel (10) comprises: a black matrix (21) which is provided with an opening (2a); a red phosphor layer (22) and a red filter layer (23) which are arranged within the opening (21a) in a red display region (R); a green phosphor layer (24) and a green filter layer (25) which are arranged within the opening (21a) in a green display region (G); and a transparent resin layer (26) and a blue filter layer (27) which are arranged within the opening (21a) in a blue display region (B) A light exit surface of the transparent resin layer (26) is provided with a plurality of projected portions (26c), and the transparent resin layer (26) has a refractive index different from that of the blue filter layer (27), which is in contact with the light exit surface.Type: ApplicationFiled: October 16, 2009Publication date: January 26, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Shinya Kadowaki, Takeshi Ishida, Kazuya Kaida, Yuhji Yashiro, Fumie Kunimasa, Hiroaki Shigeta, Ryazo Yuki
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Publication number: 20120013654Abstract: A liquid crystal display panel (39) includes a diffraction grating (DG) that is provided on the side of the inner surface (32N) of an opposed substrate (32) for receiving light and is used for enhancing the light output efficiency from the inner surface (32N) to the outside.Type: ApplicationFiled: October 29, 2009Publication date: January 19, 2012Applicant: Sharp Kabushiki KaishaInventors: Yuji Yashiro, Kazuya Kaida, Shinya Kadowaki, Fumie Kunimasa, Takeshi Ishida, Hiroaki Shigeta, Ryuzo Yuki
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Publication number: 20110299013Abstract: A planar illumination device is provided that enhances the efficiency of use of light and its brightness while suppressing uneven brightness, that reduces an increase in the manufacturing cost and that can reduce the thickness of the planar illumination device. In this backlight device (planar illumination device) (20), in the light emitting surface (23b) of a light guide body (23), a plurality of prisms (23e) that gradually reduce an angle of incidence of light with respect to the back surface (23c) of the light guide body are provided, and, in the back surface (24a) of a low refractive index layer (24), a plurality of prisms (24b) that have the function of forwardly and totally reflecting light from LEDs (21) in an interface between the back surface of the low refractive index layer and an air layer are formed.Type: ApplicationFiled: October 7, 2009Publication date: December 8, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Takeshi Ishida, Kazuya Kaida, Tadashi Kawamura, Yuji Yashiro, Shinya Kadowaki, Fumie Kunimasa, Hiroaki Shigeta, Ryuzo Yuki
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Patent number: 7990495Abstract: A method for cutting apart a glass substrate is provided whereby scribing of the glass substrate is possible without being affected by the presence or thickness of a deposited film formed thereon and without scratching the deposited film. To treat a glass substrate having a deposited film, such as a thin film or resin film, formed on one surface thereof, there are provided a shaving device, which is a blade that removes strip-shaped portions of the deposited film to expose strip-shaped regions on the glass substrate, and a wheel cutter (14a) that forms scribed lines along the strip-shaped regions exposed on the glass substrate. The glass substrate is cut apart along the scribed lines.Type: GrantFiled: January 16, 2009Date of Patent: August 2, 2011Assignees: Sharp Kabushiki Kaisha, Citizen Seimitsu Co., Ltd.Inventors: Koji Yamabuchi, Tomohisa Komoda, Kazuya Kaida, Akinori Izumi, Takane Horiuchi, Shinya Takabe, Toshimitsu Furuya, Tetsuro Katayama
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Patent number: 7889309Abstract: A manufacturing method of a liquid crystal display panel includes: a sealant arranging step of arranging a sealant on a main surface of one of or each of two substrates to be bonded to each other; a liquid crystal dropping step of dropping liquid crystal on one of the two substrates; and a bonding step of bonding the two substrates to each other, wherein the method further includes: to be performed prior to the liquid crystal dropping step, a deaerating step of arranging in a pressure-reduced atmosphere at least a substrate on which the liquid crystal is to be dropped out of the two substrates; and, to be performed prior to the bonding step, a releasing step of releasing the pressure-reduced atmosphere by an inert gas.Type: GrantFiled: September 2, 2004Date of Patent: February 15, 2011Assignee: Sharp Kabushiki KaishaInventors: Kazuya Kaida, Akinori Izumi
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Patent number: 7868964Abstract: A liquid crystal display panel manufacturing apparatus is provided with a stage for fixing a substrate having an optical film adhered to at least one of surfaces of the substrate. The stage has a suction hole for attracting the substrate by suction. The stage has an interposition member located around a region provided with the suction hole, and the interposition member has a closed frame-like form in a plan view. A display panel manufacturing apparatus that can stably fix the substrate is provided.Type: GrantFiled: December 26, 2005Date of Patent: January 11, 2011Assignee: Sharp Kabushiki KaishaInventors: Akinori Izumi, Kazuya Kaida, Koji Yamabuchi, Makoto Nakahara, Nobuo Sasaki
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Publication number: 20090201444Abstract: A method for cutting apart a glass substrate is provided whereby scribing of the glass substrate is possible without being affected by the presence or thickness of a deposited film formed thereon and without scratching the deposited film. To treat a glass substrate having a deposited film, such as a thin film or resin film, formed on one surface thereof, there are provided a shaving device, which is a blade that removes strip-shaped portions of the deposited film to expose strip-shaped regions on the glass substrate, and a wheel cutter (14a) that forms scribed lines along the strip-shaped regions exposed on the glass substrate. The glass substrate is cut apart along the scribed lines.Type: ApplicationFiled: January 16, 2009Publication date: August 13, 2009Inventors: Koji Yamabuchi, Tomohisa Komoda, Kazuya Kaida, Akinori Izumi, Takane Horiuchi, Shinya Takabe, Toshimitsu Furuya, Tetsuro Katayama
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Patent number: 7553390Abstract: A method for cutting apart a glass substrate is provided whereby scribing of the glass substrate is possible without being affected by the presence or thickness of a deposited film formed thereon and without scratching the deposited film. To treat a glass substrate having a deposited film, such as a thin film or resin film, formed on one surface thereof, there are provided a shaving device, which is a blade that removes strip-shaped portions of the deposited film to expose strip-shaped regions on the glass substrate, and a wheel cutter that forms scribed lines along the strip-shaped regions exposed on the glass substrate. The glass substrate is cut apart along the scribed lines.Type: GrantFiled: November 5, 2002Date of Patent: June 30, 2009Assignees: Sharp Kabushiki Kaisha, Citizen Seimitsu Co., Ltd.Inventors: Koji Yamabuchi, Tomohisa Komoda, Kazuya Kaida, Akinori Izumi, Takane Horiuchi, Shinya Takabe, Toshimitsu Furuya, Tetsuro Katayama
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Publication number: 20070259589Abstract: A liquid crystal display panel manufacturing apparatus is provided with a stage for fixing a substrate having an optical film adhered to at least one of surfaces of the substrate. The stage has a suction hole for attracting the substrate by suction. The stage has an interposition member located around a region provided with the suction hole, and the interposition member has a closed frame-like form in a plan view. A display panel manufacturing apparatus that can stably fix the substrate is provided.Type: ApplicationFiled: December 26, 2005Publication date: November 8, 2007Applicant: Sharp Kabushiki KaishaInventors: Akinori Izumi, Kazuya Kaida, Koji Yamabuchi, Makoto Nakahara, Nobuo Sasaki
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Publication number: 20070052913Abstract: A manufacturing method of a liquid crystal display panel includes: a sealant arranging step of arranging a sealant on a main surface of one of or each of two substrates to be bonded to each other; a liquid crystal dropping step of dropping liquid crystal on one of the two substrates; and a bonding step of bonding the two substrates to each other, wherein the method further includes: to be performed prior to the liquid crystal dropping step, a deaerating step of arranging in a pressure-reduced atmosphere at least a substrate on which the liquid crystal is to be dropped out of the two substrates; and, to be performed prior to the bonding step, a releasing step of releasing the pressure-reduced atmosphere by an inert gas.Type: ApplicationFiled: September 2, 2004Publication date: March 8, 2007Applicant: Sharp Kabushiki KaishaInventors: Kazuya Kaida, Akinori Izumi
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Publication number: 20050056127Abstract: A method for cutting apart a glass substrate is provided whereby scribing of the glass substrate is possible without being affected by the presence or thickness of a deposited film formed thereon and without scratching the deposited film. To treat a glass substrate (1) having a deposited film (1a), such as a thin film or resin film, formed on one surface thereof, there are provided a shaving means (202), which is a blade that removes strip-shaped portions of the deposited film (1a) to expose strip-shaped regions on the glass substrate (1), and a wheel cutter (14a) that forms scribed lines along the strip-shaped regions exposed on the glass substrate (1). The glass substrate (1) is cut apart along the scribed lines.Type: ApplicationFiled: November 5, 2002Publication date: March 17, 2005Inventors: Koji Yamabuchi, Tomohisa Komoda, Kazuya Kaida, Akinori Izumi, Takane Horiuchi, Shinya Takabe, Toshimitsu Furuya, Tetsuro Katayama