Patents by Inventor Rumo Satake
Rumo Satake 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: 20170309741Abstract: A point light source is converted into a plane light source having a satisfactory uniformity. The point light source is converted into a line light source by means of a linear light guiding plate, and further into the plane light source by means of a plane-like light guiding plate. Light from the point light source is reflected at a lamp reflector to be incident on at least two side surfaces of the plane-like light guiding plate.Type: ApplicationFiled: July 7, 2017Publication date: October 26, 2017Inventors: Hajime KIMURA, Rumo SATAKE
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Patent number: 9798204Abstract: Disclination of an active matrix liquid crystal display device is reduced. Portions of pixel electrodes are formed so as to mutually overlap with a convex portion. If the height of the convex portion is too tall, the amount of light leakage increases due to liquid crystals orienting diagonally with respect to a substrate surface. (See FIG. 1C.) If the height of the convex portion is low, the disclination reduction effect is low. The optimal convex portion height is thus determined.Type: GrantFiled: November 18, 2013Date of Patent: October 24, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Yuriko Hamamoto, Rumo Satake
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Patent number: 9704996Abstract: A semiconductor device comprises a semiconductor film and a gate electrode with a gate insulating film interposed therebetween, a conductive film, an insulating film over the gate electrode and the conductive film, and a gate wiring over the insulating film. The gate wiring extends across the conductive film.Type: GrantFiled: September 4, 2014Date of Patent: July 11, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Rumo Satake
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Patent number: 9182642Abstract: In a horizontal electric field drive type liquid crystal electro-optic device, a gate electrode, a source electrode, a drain electrode, a semiconductor film and a common electrode are formed on a glass substrate and a liquid crystal material is driven by controlling the strength of an electric field substantially parallel to the glass substrate. The electrodes and the semiconductor film are made curved, for example semi-circular or semi-elliptical, in sectional profile. These curved sectional profiles can be formed by suitably selecting and combining various patterning and etching methods.Type: GrantFiled: December 4, 2012Date of Patent: November 10, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Takeshi Nishi, Rumo Satake
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Publication number: 20140367690Abstract: A point light source is converted into a plane light source having a satisfactory uniformity. The point light source is converted into a line light source by means of a linear light guiding plate, and further into the plane light source by means of a plane-like light guiding plate. Light from the point light source is reflected at a lamp reflector to be incident on at least two side surfaces of the plane-like light guiding plate.Type: ApplicationFiled: September 4, 2014Publication date: December 18, 2014Inventors: Hajime Kimura, Rumo Satake
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Patent number: 8853940Abstract: A display device using an organic light emitting element is provided which is structured so as to ensure excellent display performance by avoiding dot defect and improve long-term reliability. The distance between an organic light emitting element and a sealing substrate is controlled using the top of a bank that is placed in a pixel portion and the top of an insulating film that is placed in a driving circuit portion. As a result, a gap is provided between the organic light emitting element and the sealing substrate and a damage to the organic light emitting element can be avoided. Furthermore, the sealing substrate can be as close to an element substrate as possible, thereby keeping the amount of moisture that enters the display device from its sides small.Type: GrantFiled: July 2, 2012Date of Patent: October 7, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Rumo Satake
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Patent number: 8829529Abstract: A point light source is converted into a plane light source having a satisfactory uniformity. The point light source is converted into a line light source by means of a linear light guiding plate, and further into the plane light source by means of a plane-like light guiding plate. Light from the point light source is reflected at a lamp reflector to be incident on at least two side surfaces of the plane-like light guiding plate.Type: GrantFiled: July 12, 2013Date of Patent: September 9, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Rumo Satake
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Publication number: 20140132871Abstract: Disclination of an active matrix liquid crystal display device is reduced. Portions of pixel electrodes are formed so as to mutually overlap with a convex portion. If the height of the convex portion is too tall, the amount of light leakage increases due to liquid crystals orienting diagonally with respect to a substrate surface. (See FIG. 1C.) If the height of the convex portion is low, the disclination reduction effect is low. The optimal convex portion height is thus determined.Type: ApplicationFiled: November 18, 2013Publication date: May 15, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Yuriko Hamamoto, Rumo Satake
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Patent number: 8587741Abstract: Disclination of an active matrix liquid crystal display device is reduced. Portions of pixel electrodes are formed so as to mutually overlap with a convex portion. If the height of the convex portion is too tall, the amount of light leakage increases due to liquid crystals orienting diagonally with respect to a substrate surface. (See FIG. 1C.) If the height of the convex portion is low, the disclination reduction effect is low. The optimal convex portion height is thus determined.Type: GrantFiled: January 23, 2012Date of Patent: November 19, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Yuriko Hamamoto, Rumo Satake
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Publication number: 20130299836Abstract: A point light source is converted into a plane light source having a satisfactory uniformity. The point light source is converted into a line light source by means of a linear light guiding plate, and further into the plane light source by means of a plane-like light guiding plate. Light from the point light source is reflected at a lamp reflector to be incident on at least two side surfaces of the plane-like light guiding plate.Type: ApplicationFiled: July 12, 2013Publication date: November 14, 2013Inventors: Hajime Kimura, Rumo Satake
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Patent number: 8514361Abstract: A liquid crystal display device comprises a first substrate, a thin film transistor over an upper surface the first substrate, an interlayer insulating film formed over the thin film transistor, a first insulating layer formed over the interlayer insulating film, a second insulating layer formed over the interlayer insulating film, an electrode electrically connected to the thin film transistor wherein a portion of the electrode is formed on at least side surfaces of the first insulating layer, a common electrode formed over the interlayer insulating film wherein a portion of the common electrode is formed on at least side surfaces of the second insulating layer such that an electric field is produced by the common electrode and the electrode, a second substrate opposed to the first substrate, and a mixture containing a polymer and a liquid crystal between the first substrate and the second substrate. The electric field is applied to the mixture.Type: GrantFiled: May 24, 2012Date of Patent: August 20, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Takeshi Nishi, Rumo Satake
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Patent number: 8487315Abstract: A point light source is converted into a plane light source having a satisfactory uniformity. The point light source is converted into a line light source by means of a linear light guiding plate, and further into the plane light source by means of a plane-like light guiding plate. Light from the point light source is reflected at a lamp reflector to be incident on at least two side surfaces of the plane-like light guiding plate.Type: GrantFiled: October 19, 2011Date of Patent: July 16, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Rumo Satake
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Patent number: 8415881Abstract: A display device using an organic light emitting element is provided which is structured so as to ensure excellent display performance by avoiding dot defect and improve long-term reliability. The distance between an organic light emitting element and a sealing substrate is controlled using the top of a bank that is placed in a pixel portion and the top of an insulating film that is placed in a driving circuit portion. As a result, a gap is provided between the organic light emitting element and the sealing substrate and a damage to the organic light emitting element can be avoided. Furthermore, the sealing substrate can be as close to an element substrate as possible, thereby keeping the amount of moisture that enters the display device from its sides small.Type: GrantFiled: July 17, 2008Date of Patent: April 9, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Rumo Satake
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Patent number: 8339558Abstract: In a horizontal electric field drive type liquid crystal electro-optic device, a gate electrode, a source electrode, a drain electrode, a semiconductor film and a common electrode are formed on a glass substrate and a liquid crystal material is driven by controlling the strength of an electric field substantially parallel to the glass substrate. The electrodes and the semiconductor film are made curved, for example semi-circular or semi-elliptical, in sectional profile. These curved sectional profiles can be formed by suitably selecting and combining various patterning and etching methods.Type: GrantFiled: October 13, 2011Date of Patent: December 25, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Takeshi Nishi, Rumo Satake
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Publication number: 20120287365Abstract: A liquid crystal display device includes a first substrate, a second substrate opposed to the first substrate with a gap therebetween, a thin film transistor formed over the first substrate, an interlayer insulating film formed over the thin film transistor, a pixel electrode electrically connected to the thin film transistor, at least one common electrode formed over the interlayer insulating film such that an electric field in parallel with the first substrate is produced by the common electrode and the pixel electrode, and a liquid crystal layer between the first substrate and the second substrate.Type: ApplicationFiled: May 24, 2012Publication date: November 15, 2012Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Takeshi Nishi, Rumo Satake
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Publication number: 20120267676Abstract: A display device using an organic light emitting element is provided which is structured so as to ensure excellent display performance by avoiding dot defect and improve long-term reliability. The distance between an organic light emitting element and a sealing substrate is controlled using the top of a bank that is placed in a pixel portion and the top of an insulating film that is placed in a driving circuit portion. As a result, a gap is provided between the organic light emitting element and the sealing substrate and a damage to the organic light emitting element can be avoided. Furthermore, the sealing substrate can be as close to an element substrate as possible, thereby keeping the amount of moisture that enters the display device from its sides small.Type: ApplicationFiled: July 2, 2012Publication date: October 25, 2012Inventor: Rumo Satake
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Publication number: 20120188476Abstract: Disclination of an active matrix liquid crystal display device is reduced. Portions of pixel electrodes are formed so as to mutually overlap with a convex portion. If the height of the convex portion is too tall, the amount of light leakage increases due to liquid crystals orienting diagonally with respect to a substrate surface. (See FIG. 1C.) If the height of the convex portion is low, the disclination reduction effect is low. The optimal convex portion height is thus determined.Type: ApplicationFiled: January 23, 2012Publication date: July 26, 2012Inventors: Yoshiharu Hirakata, Yuriko Hamamoto, Rumo Satake
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Patent number: 8199300Abstract: A liquid crystal display device includes a first substrate, a second substrate opposed to the first substrate with a gap therebetween, a thin film transistor formed over the first substrate, an interlayer insulating film formed over the thin film transistor, a pixel electrode electrically connected to the thin film transistor, at least one common electrode formed over the interlayer insulating film such that an electric field in parallel with the first substrate is produced by the common electrode and the pixel electrode, and a liquid crystal layer between the first substrate and the second substrate.Type: GrantFiled: June 1, 2010Date of Patent: June 12, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Takeshi Nishi, Rumo Satake
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Publication number: 20120094411Abstract: In a horizontal electric field drive type liquid crystal electro-optic device, a gate electrode, a source electrode, a drain electrode, a semiconductor film and a common electrode are formed on a glass substrate and a liquid crystal material is driven by controlling the strength of an electric field substantially parallel to the glass substrate. The electrodes and the semiconductor film are made curved, for example semi-circular or semi-elliptical, in sectional profile. These curved sectional profiles can be formed by suitably selecting and combining various patterning and etching methods.Type: ApplicationFiled: October 13, 2011Publication date: April 19, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Shunpei Yamazaki, Takeshi Nishi, Rumo Satake
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Publication number: 20120037964Abstract: A point light source is converted into a plane light source having a satisfactory uniformity. The point light source is converted into a line light source by means of a linear light guiding plate, and further into the plane light source by means of a plane-like light guiding plate. Light from the point light source is reflected at a lamp reflector to be incident on at least two side surfaces of the plane-like light guiding plate.Type: ApplicationFiled: October 19, 2011Publication date: February 16, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Hajime Kimura, Rumo Satake