Patents by Inventor Mitsuhiro Takeba
Mitsuhiro Takeba 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: 11860464Abstract: An optical stack includes: a light scattering film converting light received at a light receiving surface into scattering light therein and then outputting the scattering light outside from a light output surface, and a sheet provided on the light output surface side of the light scattering film. The light scattering film includes: a functional layer formed of a light-transmissive composition including an organic polymer compound and light scattering particles. The functional layer includes a first surface receiving the light and a second surface from which the scattering light is output. The functional layer includes a particle layer formed of light scattering particles having a content of 60% by volume or higher among the light scattering particles, the particle layer expanding along the first surface and being concentrated in a direction perpendicular to the first surface.Type: GrantFiled: March 27, 2020Date of Patent: January 2, 2024Assignee: SAKAI DISPLAY PRODUCTS CORPORATIONInventors: Shintaro Yamada, Yukio Yoshida, Atsuko Maeda, Sumire Hombo, Hideki Nakagawa, Mitsuhiro Takeba, Toshihiro Yamashita, Katsumi Kondo
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Patent number: 11698548Abstract: A liquid crystal display apparatus, includes: a light-condensing backlight unit; a liquid crystal panel including a first linear polarizer and a second linear polarizer; a light scattering film facing the second linear polarizer; and a third linear polarizer facing the light scattering film. The light scattering film includes a functional layer including an organic polymer compound and light scattering particles. The functional layer includes a particle layer in which a fraction of 60% by volume to 100% by volume of the light scattering particles included in the functional layer expands along a surface of the particle layer at which the light output from the liquid crystal panel is received, and the particle layer is concentrated to a region having a thickness of 1 to 80% of a total thickness of the functional layer, in a direction perpendicular to the contact surface.Type: GrantFiled: March 27, 2020Date of Patent: July 11, 2023Assignee: SAKAI DISPLAY PRODUCTS CORPORATIONInventors: Yukio Yoshida, Atsuko Maeda, Nobuaki Ikenaka, Katsumi Kondo, Toshihiro Yamashita, Hideki Nakagawa, Sumire Hombo, Mitsuhiro Takeba, Shintaro Yamada
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Publication number: 20220197083Abstract: A liquid crystal display apparatus, includes: a light-condensing backlight unit; a liquid crystal panel including a first linear polarizer and a second linear polarizer; a light scattering film facing the second linear polarizer; and a third linear polarizer facing the light scattering film. The light scattering film includes a functional layer including an organic polymer compound and light scattering particles. The functional layer includes a particle layer in which a fraction of 60% by volume to 100% by volume of the light scattering particles included in the functional layer expands along a surface of the particle layer at which the light output from the liquid crystal panel is received, and the particle layer is concentrated to a region having a thickness of 1 to 80% of a total thickness of the functional layer, in a direction perpendicular to the contact surface.Type: ApplicationFiled: March 27, 2020Publication date: June 23, 2022Applicant: SAKAI DISPLAY PRODUCTS CORPORATIONInventors: YUKIO YOSHIDA, ATSUKO MAEDA, Nobuaki IKENAKA, KATSUMI KONDO, TOSHIHIRO YAMASHITA, HIDEKI NAKAGAWA, Sumire HOMBO, Mitsuhiro TAKEBA, SHINTARO YAMADA
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Publication number: 20220187653Abstract: An optical stack includes: a light scattering film converting light received at a light receiving surface into scattering light therein and then outputting the scattering light outside from a light output surface, and a sheet provided on the light output surface side of the light scattering film. The light scattering film includes: a functional layer formed of a light-transmissive composition including an organic polymer compound and light scattering particles. The functional layer includes a first surface receiving the light and a second surface from which the scattering light is output. The functional layer includes a particle layer formed of light scattering particles having a content of 60% by volume or higher among the light scattering particles, the particle layer expanding along the first surface and being concentrated in a direction perpendicular to the first surface.Type: ApplicationFiled: March 27, 2020Publication date: June 16, 2022Inventors: SHINTARO YAMADA, YUKIO YOSHIDA, ATSUKO MAEDA, Sumire HOMBO, HIDEKI NAKAGAWA, Mitsuhiro TAKEBA, TOSHIHIRO YAMASHITA, KATSUMI KONDO
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Patent number: 8430520Abstract: In a lamp clip 30, a locking portion 32 locked from the rear side to the hole edge of a locking hole 41 formed in a chassis 22 through an insertion hole 43 formed in an optical sheet 27 is provided. In the chassis 22, a through-hole 42 having a hole area larger than that of the locking hole 41 is provided continuously from the locking hole 41. The locking portion 32 is allowed to move between a fixed position where the locking portion 32 is located in the locking hole 41 and an attaching and detaching position where the locking portion 32 is located in the through-hole 42. The insertion hole 43 of the optical sheet 27 has a hole area larger than that of the locking hole 41. The optical sheet 27 is allowed to slide from an initial position where the insertion hole 43 communicates with the through-hole 42 in a direction along a moving direction of the locking portion 32.Type: GrantFiled: August 20, 2009Date of Patent: April 30, 2013Assignee: Sharp Kabushiki KaishaInventor: Mitsuhiro Takeba
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Patent number: 8281497Abstract: A lamp holder 20 for use mounted on a lamp housing 4a surface having a flat shape to hold a plurality of tubular lamps 5 while arranging the lamps in parallel on the lamp housing surface providing a predetermined interval between the lamps includes a holder board 21, and three lamp-clamping pins 22a, 22b and 22c that are provided in a protruding manner at each end portion of the holder board, the lamp-clamping pins at each end portion of the holder board being disposed to have a positional relation such that they are capable of clamping the lamp that passes through them, and the lamp holder being arranged to provide, by being mounted at a variable rotation angle on the lamp housing surface, an interval of a desired size between the lamps.Type: GrantFiled: June 18, 2008Date of Patent: October 9, 2012Assignee: Sharp Kabushiki KaishaInventor: Mitsuhiro Takeba
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Patent number: 8184240Abstract: Light source lamps can be held at different intervals by a single kind of lamp clip. A straight tube light source lamp (3) arranged on the surface of a backlight chassis (1) is held by a lamp clip (20) fixed to the backlight chassis (1). The lamp clip (20) comprises a base (21) placed on the surface of the backlight chassis (1), lamp grippers (22) formed on the opposite sides of the base (21), and a fixing piece (23). A plurality of lamp grippers (22) are formed on both sides of the base (21) at respective intervals different from each other. A fixing hole (10) engaging with the fixing piece (23) on the surface of the lamp clip (20) not pertaining to lamp holding, and an escape hole (11) for passing the lamp gripper (22) on that surface are formed in the backlight chassis (1).Type: GrantFiled: December 1, 2008Date of Patent: May 22, 2012Assignee: Sharp Kabushiki KaishaInventor: Mitsuhiro Takeba
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Publication number: 20110249196Abstract: A locking portion of a lamp clip has an inserting portion that protrudes in an inserting direction into a insertion hole, a locking leg portion provided to be opposed to the inserting portion, and a hook provided to project from the locking leg portion to the opposite side of the inserting portion side and locked to the hole edge of the insertion hole from the rear side. The locking leg portion is arranged to be opposed to the hole edge of the insertion hole formed in the optical sheet in a state in which the hook is locked to the hole edge of the insertion hole. When the locking leg portion is pushed by the hole edge of the insertion hole, the hook and the hole edge of the insertion hole are unlocked.Type: ApplicationFiled: August 20, 2009Publication date: October 13, 2011Applicant: Sharp Kabushiki KaishaInventor: Mitsuhiro Takeba
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Publication number: 20110249203Abstract: In a lamp clip 30, a locking portion 32 locked from the rear side to the hole edge of a locking hole 41 formed in a chassis 22 through an insertion hole 43 formed in an optical sheet 27 is provided. In the chassis 22, a through-hole 42 having a hole area larger than that of the locking hole 41 is provided continuously from the locking hole 41. The locking portion 32 is allowed to move between a fixed position where the locking portion 32 is located in the locking hole 41 and an attaching and detaching position where the locking portion 32 is located in the through-hole 42. The insertion hole 43 of the optical sheet 27 has a hole area larger than that of the locking hole 41. The optical sheet 27 is allowed to slide from an initial position where the insertion hole 43 communicates with the through-hole 42 in a direction along a moving direction of the locking portion 32.Type: ApplicationFiled: August 20, 2009Publication date: October 13, 2011Applicant: SHARP KABUSHIKI KAISHAInventor: Mitsuhiro Takeba
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Publication number: 20100328572Abstract: Light source lamps can be held at different intervals by a single kind of lamp clip. A straight tube light source lamp (3) arranged on the surface of a backlight chassis (1) is held by a lamp clip (20) fixed to the backlight chassis (1). The lamp clip (20) comprises a base (21) placed on the surface of the backlight chassis (1), lamp grippers (22) formed on the opposite sides of the base (21), and a fixing piece (23). A plurality of lamp grippers (22) are formed on both sides of the base (21) at respective intervals different from each other. A fixing hole (10) engaging with the fixing piece (23) on the surface of the lamp clip (20) not pertaining to lamp holding, and an escape hole (11) for passing the lamp gripper (22) on that surface are formed in the backlight chassis (1).Type: ApplicationFiled: December 1, 2008Publication date: December 30, 2010Applicant: SHARP KABUSHIKI KAISHAInventor: Mitsuhiro Takeba
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Publication number: 20100321926Abstract: Light source lamps can be held at different interval by a single kind of lamp clip. A straight tube light source lamp (3) arranged on the surface of a backlight chassis (1) is held by a lamp clip (20) fixed to the backlight chassis (1). The lamp clip (20) comprises a base (21) placed on the surface of the backlight chassis (1), and lamp grippers (22) formed on the opposite sides of the base (21). A plurality of lamp grippers (22) are formed on both sides of the base (21) at respective intervals different from each other. A through hole (11) for passing the lamp gripper (22) on the surface of the lamp clip (20) not pertaining to lamp holding is formed in the backlight chassis (1). The lamp gripper (22) passed through the through hole (11) serves to fix the lamp clip (20) to the backlight chassis (1).Type: ApplicationFiled: December 1, 2008Publication date: December 23, 2010Applicant: SHARP KABUSHIKI KAISHAInventor: Mitsuhiro Takeba
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Publication number: 20100290211Abstract: Provided is a lamp holder by which a pitch of fluorescent tubes and the number of the fluorescent tube used can be changed without preparing a new lamp holder application to such change, in the case of changing the pitch of the fluorescent tubes and the number of the fluorescent tubes used. A lamp holder (6) is provided with a fixed member (11) and a holding member (12). The fixed member (11) and the holding member (12) are separated from each other. The holding member (12) can be attached to and detached from the fixed member (11), and the holding member (12) can be attached to a discretionary position on the fixed member (11).Type: ApplicationFiled: October 29, 2008Publication date: November 18, 2010Applicant: SHARP KABUSHIKI KAISHAInventor: Mitsuhiro Takeba
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Publication number: 20100283937Abstract: A lamp holder 20 for use mounted on a lamp housing 4a surface having a flat shape to hold a plurality of tubular lamps 5 while arranging the lamps in parallel on the lamp housing surface providing a predetermined interval between the lamps includes a holder board 21, and three lamp-clamping pins 22a, 22b and 22c that are provided in a protruding manner at each end portion of the holder board, the lamp-clamping pins at each end portion of the holder board being disposed to have a positional relation such that they are capable of clamping the lamp that passes through them, and the lamp holder being arranged to provide, by being mounted at a variable rotation angle on the lamp housing surface, an interval of a desired size between the lamps.Type: ApplicationFiled: June 18, 2008Publication date: November 11, 2010Applicant: SHARP KABUSHIKI KAISHAInventor: Mitsuhiro Takeba
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Publication number: 20100277651Abstract: A lighting device 12 for a display device of the present invention includes a plurality of linear light sources 17 arranged in parallel and light source holding members 20 for holding the linear light sources 17. Each light source holding member 20 has the first member 30 and the second member 40. The first member 30 has the first light source holding portion 31 that directly holds the first linear light source 17a of the linear light sources 17. The second member 40 has the second light source holding portion 41 that directly holds the second linear light source 17b that is different from the first linear light source 17a. The light source holding member 20 is configured such that a distance between the first light source holding portion 31 and the second light source holding portion 41 can be changed by a combination of an arrangement direction of the first member 30 and the second member 40 and a permutation layout of the first member 30 and the second member 40.Type: ApplicationFiled: June 2, 2008Publication date: November 4, 2010Applicant: SHARP KABUSHIKI KAISHAInventor: Mitsuhiro Takeba
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Publication number: 20100232140Abstract: A lamp holder that is capable of reducing the number of lamp holder types required for setting a variety of the intervals between the light source lamps such that the interval is shorter in the center portion and wider in the respective end portions for example. The lamp holder 20 has a plurality of lamp clips 21, 21 that hold two CCFLs at a predetermined interval and are rotatably supported on a base of the lamp holder 20.Type: ApplicationFiled: June 18, 2008Publication date: September 16, 2010Applicant: SHARP KABUSHIKI KAISHAInventor: Mitsuhiro Takeba
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Publication number: 20100194997Abstract: A lighting device 12 for a display device of the present invention includes a plurality of linear light sources 17 and light source holding members 20 for holding the linear light sources 17. Each light source holding member 20 has the first member 30 and the second member 40. The first member 30 has the first light source holding member 31 that directly holds the first linear light source 17a of the linear light sources 17. The second member 40 has the second light source holding member 41 that directly holds the second linear light source 17b that is different from the first linear light source 17a. The light source holding member 20 has means of changing a distance between light source holding portions 33, 43 for changing a distance between the first light source holding portion 31 and the second light source holding portion 41.Type: ApplicationFiled: May 16, 2008Publication date: August 5, 2010Applicant: SHARP KABUSHIKI KAISHAInventor: Mitsuhiro Takeba
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Patent number: 7212260Abstract: A method for producing a color filter includes forming a resinous black matrix on a substrate, and bonding a color film to the substrate and the resinous black matrix. The edge of the matrix is made thinner than an adjoining portion of the matrix to reduce or eliminate foaming and discoloration.Type: GrantFiled: April 1, 2004Date of Patent: May 1, 2007Assignee: Sharp Kabushiki KaishaInventors: Koji Matsuoka, Mitsuhiro Takeba, Kenji Takii, Tsuyoshi Tokuda
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Publication number: 20040207780Abstract: A method for producing a color filter includes forming a resinous black matrix on a substrate, and bonding a color film to the substrate and the resinous black matrix. The edge of the matrix is made thinner than an adjoining portion of the matrix to reduce or eliminate foaming and discoloration.Type: ApplicationFiled: April 1, 2004Publication date: October 21, 2004Inventors: Koji Matsuoka, Mitsuhiro Takeba, Kenji Takii, Tsuyoshi Tokuda