Patents by Inventor Tetsuo Urabe
Tetsuo Urabe 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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Publication number: 20120262943Abstract: A display unit in which the view angle is limited and the front luminance is improved. The display unit includes a display device, and a light guiding part which is provided to face the display device. The light guiding part, has an incident face facing the display device, an emitting face, a reflective surface on a side thereof, and a cross section expanding from the incident face to the emitting face.Type: ApplicationFiled: June 21, 2012Publication date: October 18, 2012Applicant: SONY CORPORATIONInventors: Tetsuo Urabe, Yuichi Iwase, Koichi Tsukihara, Yoichi Tomo, Toshihiro Fukuda
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Patent number: 8226256Abstract: A display unit which the view angle is limited and the front luminance is improved is provided. The display unit includes a display device, and a light guiding part which is provided to face the display device, has an incident face on the side opposing to the display device, an emitting face on the opposite side of the display device, and a reflective face on the side face, and has a cross section expanding from the incident face to the emitting face.Type: GrantFiled: March 1, 2007Date of Patent: July 24, 2012Assignee: Sony CorporationInventors: Tetsuo Urabe, Yuichi Iwase, Koichi Tsukihara, Yoichi Tomo, Toshihiro Fukuda
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Patent number: 7656478Abstract: A display apparatus includes a first substrate, a second substrate separated from the first substrate by a predetermined gap, an electro-optical layer located within the gap, a diffusing reflection layer having a plurality of adjacent polygonal columns, and electrodes formed on at least one of the first substrate and second substrate for application of voltage to the electro-optical layer. The polygonal columns comprise upper end sloping surfaces having a maximum inclination angle of less than 12°.Type: GrantFiled: December 8, 2006Date of Patent: February 2, 2010Assignee: Sony CorporationInventors: Takayuki Fujioka, Hideo Kataoka, Tetsuo Urabe
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Patent number: 7602461Abstract: There is provided a method of manufacturing a diffusing reflector which assures high diffusion efficiency and excellent reflection characteristic for the lighting. First, a resin film having photosensitivity is formed on a substrate 2. Next, gathering of pillar-shaped bodies isolated each other by the patterning of resin film with the photolithography is provided. Subsequently, the uneven surface layer having the maximum inclination angle under 12° is formed by gently deforming individual pillar-shaped bodies with the heat treatment. Moreover, the gently deformed uneven surface layer is coated with the resin and the flat openings between pillar-shaped bodies arranged discretely are buried to ease the inclination angle. Finally, a metal film 13 formed on the gently deformed uneven surface layer.Type: GrantFiled: September 20, 2001Date of Patent: October 13, 2009Assignee: Sony CorporationInventors: Takayuki Fujioka, Hideo Kataoka, Tetsuo Urabe
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Publication number: 20080253132Abstract: A display unit which the view angle is limited and the front luminance is improved is provided. The display unit includes a display device, and a light guiding part which is provided to face the display device, has an incident face on the side opposing to the display device, an emitting face on the opposite side of the display device, and a reflective face on the side face, and has a cross section expanding from the incident face to the emitting face.Type: ApplicationFiled: March 1, 2007Publication date: October 16, 2008Inventors: Tetsuo Urabe, Yuichi Iwase, Koichi Tsukihara, Yoichi Tomo, Toshihiro Fukuda
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Publication number: 20070085966Abstract: A display apparatus includes a first substrate, a second substrate separated from the first substrate by a predetermined gap, an electro-optical layer located within the gap, a diffusing reflection layer having a plurality of adjacent polygonal columns, and electrodes formed on at least one of the first substrate and second substrate for application of voltage to the electro-optical layer. The polygonal columns comprise upper end sloping surfaces having a maximum inclination angle of less than 12°.Type: ApplicationFiled: December 8, 2006Publication date: April 19, 2007Inventors: Takayuki Fujioka, Hideo Kataoka, Tetsuo Urabe
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Publication number: 20060158583Abstract: There is provided a method of manufacturing a diffusing reflector which assures high diffusion efficiency and excellent reflection characteristic for the lighting. First, a resin film having photosensitivity is formed on a substrate 2. Next, gathering of pillar-shaped bodies isolated each other by the patterning of resin film with the photolithography is provided. Subsequently, the uneven surface layer having the maximum inclination angle under 12° is formed by gently deforming individual pillar-shaped bodies with the heat treatment. Moreover, the gently deformed uneven surface layer is coated with the resin and the flat openings between pillar-shaped bodies arranged discretely are buried to ease the inclination angle. Finally, a metal film 13 formed on the gently deformed uneven surface layer.Type: ApplicationFiled: September 20, 2001Publication date: July 20, 2006Inventors: Takayuki Fujioka, Hideo Kataoka, Tetsuo Urabe
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Patent number: 7009340Abstract: The invention provides a display unit which can improve emission efficiency of lights for image display, and assure luminance of display images. The display unit comprises micro prisms which are arranged in the positions corresponding to organic EL devices, and which have a high refraction index to refract a light, and auxiliary prisms with a low refraction index which are embedded in voids between each micro prism. A light volume of the light viewed as an image in the direction facing an organic EL display (facing direction) is a total of a light volume of a light essentially emitted from the organic EL device in the facing direction, and lights which are directed in the facing direction by utilizing refraction phenomenon based on differences of refraction index between the micro prism and the auxiliary prism. Compared to the case wherein the micro prisms and the auxiliary prisms are not provided, an emission volume of the light in the facing direction is increased by the light volumes of the lights.Type: GrantFiled: October 22, 2003Date of Patent: March 7, 2006Assignee: Sony CorporationInventors: Nobutoshi Asai, Tetsuo Urabe, Yuichi Iwase
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Patent number: 6971938Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.Type: GrantFiled: January 20, 2004Date of Patent: December 6, 2005Assignee: Sony CorporationInventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
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Patent number: 6969948Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.Type: GrantFiled: November 19, 2002Date of Patent: November 29, 2005Assignee: Sony CorporationInventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
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Patent number: 6969291Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the windings through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.Type: GrantFiled: June 30, 2003Date of Patent: November 29, 2005Assignee: Sony CorporationInventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
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Publication number: 20040150329Abstract: The invention provides a display unit which can improve emission efficiency of lights for image display, and assure luminance of display images. The display unit comprises micro prisms which are arranged in the positions corresponding to organic EL devices, and which have a high refraction index to refract a light, and auxiliary prisms with a low refraction index which are embedded in voids between each micro prism. A light volume of the light viewed as an image in the direction facing an organic EL display (facing direction) is a total of a light volume of a light essentially emitted from the organic EL device in the facing direction, and lights which are directed in the facing direction by utilizing refraction phenomenon based on differences of refraction index between the micro prism and the auxiliary prism. Compared to the case wherein the micro prisms and the auxiliary prisms are not provided, an emission volume of the light in the facing direction is increased by the light volumes of the lights.Type: ApplicationFiled: October 22, 2003Publication date: August 5, 2004Inventors: Nobutoshi Asai, Tetsuo Urabe, Yuichi Iwase
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Publication number: 20040147200Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.Type: ApplicationFiled: January 20, 2004Publication date: July 29, 2004Inventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
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Publication number: 20040090175Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the windings through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.Type: ApplicationFiled: June 30, 2003Publication date: May 13, 2004Inventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
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Publication number: 20030173891Abstract: A high-quality tiled display system and a method for manufacturing the same are provided, wherein the tiled display system includes organic EL display panels having improved high contrast by using a black matrix and has inconspicuous boundaries. A UV-curing resin (62) is applied onto principal surfaces of tiled display panels (60), and a sealing substrate (66) is then placed onto a surface having the resin thereon. In this operation, it must be avoided that there are bubbles between the UV-curing resin (62) and the sealing substrate (66). The position of the sealing substrate (66) on the tiled display panel (60) is then adjusted. This adjustment is performed so as to allow the black matrix (64) to be positioned correctly above the auxiliary wires (23) of the ribs (22) and to be positioned correctly above the boundaries (68) of the display panels (50).Type: ApplicationFiled: February 11, 2003Publication date: September 18, 2003Inventors: Yasuhiro Chiba, Tetsuo Urabe
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Patent number: 6614174Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the wiring through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.Type: GrantFiled: November 15, 2000Date of Patent: September 2, 2003Assignee: Sony CorporationInventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
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Publication number: 20030107314Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.Type: ApplicationFiled: November 19, 2002Publication date: June 12, 2003Inventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
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Patent number: 6559916Abstract: A reflective guest-host liquid-crystal display device includes a first substrate for receiving incident light, on the inner surface of which transparent electrodes are formed; a second substrate which has a reflective film formed thereon and which is spaced to face the first substrate with a predetermined spacing; an electro-optical element held between the first and second substrates, which electro-optical element has a lamination structure including a guest-host liquid-crystal layer which contains a dichroic dye and which is uniformly oriented with respect to the transparent electrode, and an optical thin-film layer which has a predetermined optical anisotropic axis and which is formed at least on the reflective film, the optical thin-film layer being formed from a polymer liquid crystal having liquid crystal molecules which are uniaxially oriented along the optical anisotropic axis; and a passivation layer which is interposed between the optical thin-film layer and the liquid crystal layer.Type: GrantFiled: July 18, 1996Date of Patent: May 6, 2003Assignee: Sony CorporationInventors: Tetsuo Urabe, Hideo Kataoka, Nobuyuki Shigeno
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Patent number: 6525792Abstract: A diffusing reflector provides high diffusion efficiency and superior reflection characteristics. The diffusing reflector includes a substrate, a resin film on the substrate, and a metal film formed on the resin film. The resin film indudes multiple adjacent polygonal columns that have upper end sloping surfaces with a maximum inclination angle of 12 degrees or less.Type: GrantFiled: June 9, 1999Date of Patent: February 25, 2003Assignee: Sony CorporationInventors: Takayuki Fujioka, Hideo Kataoka, Tetsuo Urabe
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Patent number: 6476889Abstract: A hybrid type display apparatus capable of maintaining color purity in a case of transmission mode display, and improving lightness of color in a case of reflection mode display is provided. This hybrid type display apparatus is comprised of: a pair of substrates comprising a first substrate on a front side and a second substrate on a rear side, disposed in opposite directions spaced apart from each other; a first electrode provided on an internal surface of the first substrate; a second electrode provided on an internal surface of the second substrate; a color filter provided on the first substrate, aligned with a pixel in a portion between the first electrode and the second electrode spaced apart in the opposite directions from each other; a liquid crystal layer interposed between the first and the second substrates; and a reflection layer provided on the second substrate.Type: GrantFiled: December 12, 2000Date of Patent: November 5, 2002Assignee: Sony CorporationInventors: Tetsuo Urabe, Nobuyuki Shigeno, Takayuki Fujioka