Patents by Inventor Yasunobu Hiromasu
Yasunobu Hiromasu 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: 8193699Abstract: A display unit capable of preventing breaking of a second electrode and decreasing a leakage current through an organic layer is provided. The display unit includes a plurality of organic light emitting devices over a flat substrate. Each of the plurality of organic light emitting devices has a first electrode, an insulating film having an aperture correspondingly to the first electrode, an organic layer formed at least on the first electrode in the aperture and composed of a plurality of layers including a light emitting layer, and a second electrode sequentially. The insulating film has a low taper section having a tilt angle formed by a side face of the aperture and a flat face of the substrate that is smaller than a tilt angle of the other section of a circumference of the aperture in part of the circumference of the aperture.Type: GrantFiled: May 15, 2009Date of Patent: June 5, 2012Assignee: Sony CorporationInventors: Hirofumi Fujioka, Yasunobu Hiromasu
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Patent number: 7863615Abstract: A display unit includes, on an insulating substrate, a plurality of wirings formed to extend in different directions, a thin-film transistor, and a display element. At least one of the plurality of wirings is a divided wiring having a crossing portion formed at an intersection with the other of the plurality of wirings, and a main portion which is formed in a layer same as the other of the plurality of wirings with an insulating film in between and which is electrically connected to the crossing portion via an conductive connection provided in the insulating film. At least one of the main portion and the crossing portion includes a first layer and a second layer stacked in order from the insulating substrate side, the second layer being in direct contact with the first layer and made of a material of a higher melting point than the first layer.Type: GrantFiled: October 17, 2008Date of Patent: January 4, 2011Assignee: Sony CorporationInventors: Naoki Hayashi, Atsuya Makita, Yasunobu Hiromasu
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Publication number: 20100265223Abstract: A display device capable of improving the view angle characteristics without deteriorating the outside light contrast and a display unit using it are provided. The display device includes a first electrode, an organic layer including a light emitting layer and a second electrode sequentially over a substrate, and having a resonator structure in which light generated in the light emitting layer is resonated between a first end and a second end. An end face of the first electrode on the light emitting layer side is the first end having a step shape. A distance adjustment layer that fills in the step shape and has a flat surface on the second electrode side is provided between the first electrode and the second electrode, and thereby the second end is planarized, and an optical distance between the first end and the second end is varied according to the step shape.Type: ApplicationFiled: June 29, 2010Publication date: October 21, 2010Applicant: SONY CORPORATIONInventors: Reo Asaki, Hirofumi Fujioka, Yasunobu Hiromasu
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Publication number: 20090284144Abstract: A display unit capable of preventing breaking of a second electrode and decreasing a leakage current through an organic layer is provided. The display unit includes a plurality of organic light emitting devices over a flat substrate. Each of the plurality of organic light emitting devices has a first electrode, an insulating film having an aperture correspondingly to the first electrode, an organic layer formed at least on the first electrode in the aperture and composed of a plurality of layers including a light emitting layer, and a second electrode sequentially. The insulating film has a low taper section having a tilt angle formed by a side face of the aperture and a flat face of the substrate that is smaller than a tilt angle of the other section of a circumference of the aperture in part of the circumference of the aperture.Type: ApplicationFiled: May 15, 2009Publication date: November 19, 2009Applicant: SONY CORPORATIONInventors: Hirofumi Fujioka, Yasunobu Hiromasu
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Publication number: 20090153046Abstract: A display device having a plurality of driving elements and wiring parts electrically connected to the driving parts, the display device includes: a plurality of first electrodes which are formed in correspondence to each driving element on the driving elements and the wiring parts; a plurality of light-emitting parts which are each formed on the first electrodes; a common second electrode which is formed from a material that transmits light from the light-emitting part and is formed on the light-emitting parts; auxiliary wiring parts with a lower resistance than the second electrodes; and contact parts which are formed in laminate structure from a plurality of conductive layers and which electrically connect the second electrodes and the auxiliary wirings with each other, with at least the lowermost conductive layer of the conductive layers of the contact parts being in direct contact with the second electrode.Type: ApplicationFiled: December 8, 2008Publication date: June 18, 2009Applicant: SONY CORPORATIONInventors: Naoki Hayashi, Yasunobu Hiromasu, Hirofumi Fujioka
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Publication number: 20090101905Abstract: A display unit includes, on an insulating substrate, a plurality of wirings formed to extend in different directions, a thin-film transistor, and a display element. At least one of the plurality of wirings is a divided wiring having a crossing portion formed at an intersection with the other of the plurality of wirings, and a main portion which is formed in a layer same as the other of the plurality of wirings with an insulating film in between and which is electrically connected to the crossing portion via an conductive connection provided in the insulating film. At least one of the main portion and the crossing portion includes a first layer and a second layer stacked in order from the insulating substrate side, the second layer being in direct contact with the first layer and made of a material of a higher melting point than the first layer.Type: ApplicationFiled: October 17, 2008Publication date: April 23, 2009Applicant: SONY CORPORATIONInventors: Naoki Hayashi, Atsuya Makita, Yasunobu Hiromasu
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Publication number: 20090085843Abstract: Disclosed herein is an electronic device including, an active matrix region, a short-circuit line, electrostatic protection elements, and a light-shielding film.Type: ApplicationFiled: September 16, 2008Publication date: April 2, 2009Applicant: SONY CORPORATIONInventor: Yasunobu Hiromasu
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Patent number: 7511310Abstract: A light emitting device includes: a plurality of transistors individually corresponding to a plurality of pixels arrayed in a matrix shape, and a plurality of wiring lines connected with the transistors and disposed between the pixels. The wiring lines include signal lines connected with the transistors of the pixel columns composed of a plurality of pixels along a row direction or a column direction, and two or more common electrode lines connected with the transistors of a pixel group composed of a plurality of pixels along the row direction and the column direction. The common electrode lines are arranged on the two sides centering the signal lines.Type: GrantFiled: November 21, 2006Date of Patent: March 31, 2009Assignee: Sony CorporationInventors: Toshiaki Arai, Yasunobu Hiromasu, Motohiro Toyota
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Publication number: 20080143649Abstract: A display device capable of improving the view angle characteristics without deteriorating the outside light contrast and a display unit using it are provided. The display device includes a first electrode, an organic layer including a light emitting lay and a second electrode sequentially over a substrate, and having a resonator structure in which light generated in the light emitting layer is resonated between a first end and a second end. An end face of the first electrode on the light emitting layer side is the first end having a step shape. A distance adjustment layer that fills in the step shape and has a flat surface on the second electrode side is provided between the first electrode and the second electrode, and thereby the second end is planarized, and an optical distance between the first end and the second end is varied according to the step shape.Type: ApplicationFiled: February 1, 2007Publication date: June 19, 2008Inventors: Reo Asaki, Hirofumi Fujioka, Yasunobu Hiromasu
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Publication number: 20070114918Abstract: A light emitting device includes: a plurality of transistors individually corresponding to a plurality of pixels arrayed in a matrix shape, and a plurality of wiring lines connected with the transistors and disposed between the pixels. The wiring lines include signal lines connected with the transistors of the pixel columns composed of a plurality of pixels along a row direction or a column direction, and two or more common electrode lines connected with the transistors of a pixel group composed of a plurality of pixels along the row direction and the column direction. The common electrode lines are arranged on the two sides centering the signal lines.Type: ApplicationFiled: November 21, 2006Publication date: May 24, 2007Inventors: Toshiaki Arai, Yasunobu Hiromasu, Motohiro Toyota
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Patent number: 6999140Abstract: An image display apparatus comprises a pixel electrode, a common electrode, an aperture defined between the pixel electrode and the common electrode. The image display apparatus also includes a scanning line, a signal line, and a shield layer separate from the common electrode to block an electric field generated by at least one of the scanning line and signal line from passing through the aperture.Type: GrantFiled: December 18, 2003Date of Patent: February 14, 2006Assignee: Chi Mei Optoelectronics Corp.Inventors: Hironao Tanaka, Yukito Saitoh, Yasunobu Hiromasu
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Patent number: 6825125Abstract: A TFT array substrate 10 of the present invention includes an insulating substrate 12, thin-film transistors formed on the insulating substrate 12 in a matrix, and wirings 46 electrically connected to the thin-film-transistors. A gate-insulating film 32 is formed on the wiring 46, a passivation film 38 is formed on the gate-insulating film 32, and moreover an interlayer insulating film 42 containing an organic polymer with an edge formed thereon is formed on the gate-insulating film 32. An etching stopper 50 is formed on at least either of the gate-insulating film 32 exposed from the edge 48 of the interlayer insulating film 42 or the passivation film 38.Type: GrantFiled: May 10, 2002Date of Patent: November 30, 2004Assignee: International Business Machines CorporationInventors: Yasunobu Hiromasu, Teruhiro Nakasogi
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Publication number: 20040189917Abstract: An image display apparatus comprises a pixel electrode, a common electrode, an aperture defined between the pixel electrode and the common electrode. The image display apparatus also includes a scanning line, a signal line, and a shield layer separate from the common electrode to block an electric field generated by at least one of the scanning line and signal line from passing through the aperture.Type: ApplicationFiled: December 18, 2003Publication date: September 30, 2004Inventors: Hironao Tanaka, Yukito Saitoh, Yasunobu Hiromasu
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Publication number: 20020173155Abstract: A TFT array substrate 10 of the present invention includes an insulating substrate 12, thin-film transistors formed on the insulating substrate 12 in a matrix, and wirings 46 electrically connected to the thin-film-transistors. A gate-insulating film 32 is formed on the wiring 46, a passivation film 38 is formed on the gate-insulating film 32, and moreover an interlayer insulating film 42 containing an organic polymer with an edge formed thereon is formed on the gate-insulating film 32. An etching stopper 50 is formed on at least either of the gate-insulating film 32 exposed from the edge 48 of the interlayer insulating film 42 or the passivation film 38.Type: ApplicationFiled: May 10, 2002Publication date: November 21, 2002Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Yasunobu Hiromasu, Teruhiro Nakasogi