Patents by Inventor Takumi Seki
Takumi Seki 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).
-
Publication number: 20250108841Abstract: A vehicle entry control device according to an aspect of the present disclosure includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: acquire first driver information that is information indicating a driving tendency of a driver of a vehicle approaching a predetermined control target area; determine whether the vehicle is a target vehicle of entry restriction to a control target area based on the first driver information; and notify the vehicle determined as the target vehicle of entry restriction of information for preventing entry into the control target area.Type: ApplicationFiled: February 24, 2022Publication date: April 3, 2025Applicant: NEC CorporationInventors: Sawaka Seki, Takashi Nunomoto, Takumi Shiba, Seito Nagashima, Hitomi Ito, Masaru Yanai, Kosei Kobayashi
-
Patent number: 12231863Abstract: A sound output device including: an actuator that outputs a driving force in response to a drive signal; a vibrating body that includes a plurality of receiving parts and is vibrated by a driving force transmitted from the actuator; a transmission plate that is provided with a plurality of pressing parts that press the plurality of receiving parts, respectively; a coil spring that applies a biasing force to the transmission plate to press the plurality of pressing parts against the plurality of receiving parts, respectively; and a base body that receives one end face of the actuator, in which the vibrating body is pressed against another end face of the actuator by a biasing force of the coil spring applied via the plurality of pressing parts and the plurality of receiving parts.Type: GrantFiled: June 14, 2021Date of Patent: February 18, 2025Assignee: SONY GROUP CORPORATIONInventors: Takumi Endoh, Nobukazu Suzuki, Takayoshi Seki
-
Patent number: 8698982Abstract: A liquid crystal device includes a first substrate and a second substrate that are arranged so as to face each other, a liquid crystal layer that is pinched between the first substrate and the second substrate, one pair of polarizers that are arranged on both outer sides of the first substrate and the second substrate, a first optical element having a polarization separation function that is disposed in at least one spot of the first substrate, and a display area that contributes to display. The first optical element is arranged outside the display area.Type: GrantFiled: August 24, 2009Date of Patent: April 15, 2014Assignee: Seiko Epson CorporationInventors: Yutaka Tsuchiya, Takumi Seki
-
Patent number: 8072564Abstract: A liquid crystal device includes a pair of substrates, a liquid crystal layer sandwiched between the pair of substrates, a display area having a plurality of pixels arranged therein, and a retardation film. Each pixel includes a transmissive display area and a reflective display area. The retardation film is provided on one of the pair of substrates in a band-shape so as to continue across the reflective display areas of the plurality of pixels. An end portion of the band-shaped retardation film is positioned outside the display area.Type: GrantFiled: June 13, 2008Date of Patent: December 6, 2011Assignee: Sony CorporationInventors: Takumi Seki, Kosuke Uchida
-
Patent number: 7952680Abstract: A liquid crystal device including: a first partition wall which is disposed on the first substrate at the second substrate side, is adjacent to the liquid crystal at one wall surface, is adjacent to the seal material at the other wall surface, and is disposed along the outer circumference of the display region; a second partition wall which is disposed on the first substrate at the second substrate side, has a wall surface facing the wall surface of the first partition wall adjacent to the seal material, and is disposed along the outer circumference of the first partition wall; and a connection portion which is disposed on the first substrate at the second substrate side with a height lower than that of the first partition wall and the second partition wall, and is disposed so as to connect the wall surface of the first partition wall adjacent to the seal material and the wall surface of the second partition wall facing the wall surface.Type: GrantFiled: April 13, 2009Date of Patent: May 31, 2011Assignee: Seiko Epson CorporationInventors: Koichi Terao, Takumi Seki
-
Publication number: 20100085514Abstract: A liquid crystal device includes a first substrate and a second substrate that are arranged so as to face each other, a liquid crystal layer that is pinched between the first substrate and the second substrate, one pair of polarizers that are arranged on both outer sides of the first substrate and the second substrate, a first optical element having a polarization separation function that is disposed in at least one spot of the first substrate, and a display area that contributes to display. The first optical element is arranged outside the display area.Type: ApplicationFiled: August 24, 2009Publication date: April 8, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Yutaka TSUCHIYA, Takumi Seki
-
Publication number: 20100007842Abstract: Provided is a liquid crystal device in which a first substrate and a second substrate facing each other are adhered by a seal material, and liquid crystal is sandwiched between the first substrate and the second substrate in a region surrounded by the seal material so as to configure a display region in the region, the liquid crystal device including: a first partition wall which is disposed on the first substrate at the second substrate side, is adjacent to the liquid crystal at one wall surface, is adjacent to the seal material at the other wall surface, and is disposed along the outer circumference of the display region; a second partition wall which is disposed on the first substrate at the second substrate side, has a wall surface facing the wall surface of the first partition wall adjacent to the seal material, and is disposed along the outer circumference of the first partition wall; and a connection portion which is disposed on the first substrate at the second substrate side with a height lower thanType: ApplicationFiled: April 13, 2009Publication date: January 14, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Koichi TERAO, Takumi SEKI
-
Patent number: 7609352Abstract: The invention provides a reflection type liquid crystal device, and a projection type display and electronic equipment in which display defects caused by disclination are reduced, minimized or prevented from being produced for a highly fine liquid crystal display with a space between pixels made to be narrow to make it possible to provide a high-contrast and bright display. A liquid crystal device includes a liquid crystal layer sandwiched between a first substrate and a second substrate, and a first electrode and a second electrode formed on a face of the above-described second substrate on a side of the above-described liquid crystal layer. The above-described first electrode and the above-described second electrode are formed so that an electric field substantially parallel to the surface of the substrate with respect to the above-described liquid crystal layer can be applied thereto.Type: GrantFiled: June 27, 2008Date of Patent: October 27, 2009Assignee: Seiko Epson CorporationInventors: Tsuyoshi Maeda, Kinya Ozawa, Osamu Okumura, Eiji Okamoto, Hirotaka Kawata, Toshiharu Matsushima, Takumi Seki, Kimitaka Kamijo
-
Patent number: 7535529Abstract: When a backlight 15 is turned on in a dark environment, white light emerging from the surface of a light guide plate 15b passes through a polarizer 12 and a retardation film 14, enters the interior of the liquid crystal cell, passes through openings of reflective electrodes 7, and is introduced into a liquid crystal layer 3. The light introduced into the liquid crystal layer 3 passes through a color filter 5, emerges from the liquid crystal cell, and passes through the retardation film 13 and the polarizer 11 towards the exterior. In a lighted environment, the light incident on the polarizer 11 passes through the liquid crystal layer 3, is reflected by the reflective electrode 7, and passes through the polarizer 11 again and is emitted towards the exterior.Type: GrantFiled: June 26, 2007Date of Patent: May 19, 2009Assignee: Seiko Epson CorporationInventors: Tsuyoshi Maeda, Eiji Okamoto, Takumi Seki, Osamu Okumura
-
Patent number: 7483100Abstract: Ambient light incident upon a polarizer 105 passes through a liquid crystal layer 103 and is then reflected by reflective films 116 via transparent electrodes 115. The reflected light passes again through the liquid crystal layer 103 and the polarizer 105 and is output to the outside thereby displaying an image in a reflective displaying mode. The reflective films 116 are disposed at locations corresponding to the respective transparent electrodes 115 such that they are spaced from each other. In this structure, some ambient light passes through the spaces between adjacent transparent electrodes 115, however, such light is not reflected by the reflective films 116 toward the outside and thus a reduction in contrast due to such reflection is prevented.Type: GrantFiled: April 24, 2006Date of Patent: January 27, 2009Assignee: Seiko Epson CorporationInventors: Tsuyoshi Maeda, Osamu Okumura, Eiji Okamoto, Takumi Seki
-
Publication number: 20080309861Abstract: A liquid crystal device including a pair of substrates; a liquid crystal layer sandwiched between the pair of substrates; a display area having a plurality of pixels arranged therein, the pixels each including a transmissive display area and a reflective display area; and a retardation film provided on one of the pair of substrates in a band-shape so as to continue across the reflective display areas of the plurality of pixels, wherein an end portion of the band-shaped retardation film is positioned outside the display area.Type: ApplicationFiled: June 13, 2008Publication date: December 18, 2008Applicant: SEIKO EPSON CORPORATIONInventors: Takumi SEKI, Kosuke UCHIDA
-
Publication number: 20080273155Abstract: The invention provides a reflection type liquid crystal device, and a projection type display and electronic equipment in which display defects caused by disclination are reduced, minimized or prevented from being produced for a highly fine liquid crystal display with a space between pixels made to be narrow to make it possible to provide a high-contrast and bright display. A liquid crystal device includes a liquid crystal layer sandwiched between a first substrate and a second substrate, and a first electrode and a second electrode formed on a face of the above-described second substrate on a side of the above-described liquid crystal layer. The above-described first electrode and the above-described second electrode are formed so that an electric field substantially parallel to the surface of the substrate with respect to the above-described liquid crystal layer can be applied thereto.Type: ApplicationFiled: June 27, 2008Publication date: November 6, 2008Applicant: SEIKO EPSON CORPORATIONInventors: Tsuyoshi Maeda, Kinya Ozawa, Osamu Okumura, Eiji Okamoto, Hirotaka Kawata, Toshiharu Matsushima, Takumi Seki, Kimitaka Kamijo
-
Patent number: 7411646Abstract: The invention provides a reflection type liquid crystal device, and a projection type display and electronic equipment in which display defects caused by disclination are reduced, minimized or prevented from being produced for a highly fine liquid crystal display with a space between pixels made to be narrow to make it possible to provide a high-contrast and bright display. A liquid crystal device includes a liquid crystal layer sandwiched between a first substrate and a second substrate, and a first electrode and a second electrode formed on a face of the above-described second substrate on a side of the above-described liquid crystal layer. The above-described first electrode and the above-described second electrode are formed so that an electric field substantially parallel to the surface of the substrate with respect to the above-described liquid crystal layer can be applied thereto.Type: GrantFiled: May 3, 2007Date of Patent: August 12, 2008Assignee: Seiko Epson CorporationInventors: Tsuyoshi Maeda, Kinya Ozawa, Osamu Okumura, Eiji Okamoto, Hirotaka Kawata, Toshiharu Matsushima, Takumi Seki, Kimitaka Kamijo
-
Patent number: 7327428Abstract: To simplify a manufacturing process of a transverse electric field mode liquid crystal display device by using a non-linear resistance element such as a TFD (Thin Film Diode) as a switching element. In a liquid crystal display device having a pair of substrates with liquid crystal interposed therebetween, one of the substrates consists of an electrode substrate. On the electrode substrate, there are provided a first group of electrodes, a second group of electrodes crossing the first group of electrodes with an insulating layer interposed therebetween, non-linear resistance elements, one end of each of the non-linear resistance elements being connected to the respective one of the second group of electrodes, and pixel electrodes opposing the first group of electrodes, each pixel electrode being connected to the other end of each of the non-linear resistance elements.Type: GrantFiled: August 30, 2004Date of Patent: February 5, 2008Assignee: Seiko Epson CorporationInventors: Katsunori Yamazaki, Eiji Okamoto, Tsuyoshi Maeda, Kimitaka Kamijo, Daisuke Nagano, Takumi Seki, Akira Inoue
-
Patent number: 7292293Abstract: In a dark environment, light emitted by a fluorescent tube 301 enters a liquid crystal panel by a light guide plate 302, is transmitted through a transflective electrode 102 after passing through a polarizer 114 and a retardation plate 113, and is introduced into a liquid crystal layer 50 following coloration of light by a color filter 104. The light introduced into the liquid crystal layer 50 is emitted at an observation side of the liquid crystal panel through the retardation plate 213 and the polarizer 214 sequentially. On the other hand, in a bright environment, light from the observation side passes through the polarizer 214 and the liquid crystal layer 50, and is reflected at the transflective electrode 102 following coloration of light by the color filter 104, whereby the light is emitted at the observation side.Type: GrantFiled: August 15, 2003Date of Patent: November 6, 2007Assignee: Seiko Epson CorporationInventors: Takumi Seki, Eiji Okamoto, Keiji Takizawa
-
Publication number: 20070247575Abstract: When a backlight 15 is turned on in a dark environment, white light emerging from the surface of a light guide plate 15b passes through a polarizer 12 and a retardation film 14, enters the interior of the liquid crystal cell, passes through openings of reflective electrodes 7, and is introduced into a liquid crystal layer 3. The light introduced into the liquid crystal layer 3 passes through a color filter 5, emerges from the liquid crystal cell, and passes through the retardation film 13 and the polarizer 11 towards the exterior. In a lighted environment, the light incident on the polarizer 11 passes through the liquid crystal layer 3, is reflected by the reflective electrode 7, and passes through the polarizer 11 again and is emitted towards the exterior.Type: ApplicationFiled: June 26, 2007Publication date: October 25, 2007Inventors: Tsuyoshi Maeda, Eiji Okamoto, Takumi Seki, Osamu Okumura
-
Publication number: 20070206144Abstract: The invention provides a reflection type liquid crystal device, and a projection type display and electronic equipment in which display defects caused by disclination are reduced, minimized or prevented from being produced for a highly fine liquid crystal display with a space between pixels made to be narrow to make it possible to provide a high-contrast and bright display. A liquid crystal device includes a liquid crystal layer sandwiched between a first substrate and a second substrate, and a first electrode and a second electrode formed on a face of the above-described second substrate on a side of the above-described liquid crystal layer. The above-described first electrode and the above-described second electrode are formed so that an electric field substantially parallel to the surface of the substrate with respect to the above-described liquid crystal layer can be applied thereto.Type: ApplicationFiled: May 3, 2007Publication date: September 6, 2007Applicant: Seiko Epson CorporationInventors: Tsuyoshi Maeda, Kinya Ozawa, Osamu Okumura, Eiji Okamoto, Hirotaka Kawata, Toshiharu Matsushima, Takumi Seki, Kimitaka Kamijo
-
Patent number: 7251008Abstract: The invention provides a reflection type liquid crystal device, and a projection type display and electronic equipment in which display defects caused by disclination are reduced, minimized or prevented from being produced for a highly fine liquid crystal display with a space between pixels made to be narrow to make it possible to provide a high-contrast and bright display. A liquid crystal device includes a liquid crystal layer sandwiched between a first substrate and a second substrate, and a first electrode and a second electrode formed on a face of the above-described second substrate on a side of the above-described liquid crystal layer. The above-described first electrode and the above-described second electrode are formed so that an electric field substantially parallel to the surface of the substrate with respect to the above-described liquid crystal layer can be applied thereto.Type: GrantFiled: August 18, 2005Date of Patent: July 31, 2007Assignee: Seiko Epson CorporationInventors: Tsuyoshi Maeda, Kinya Ozawa, Osamu Okumura, Eiji Okamoto, Hirotaka Kawata, Toshiharu Matsushima, Takumi Seki, Kimitaka Kamijo
-
Patent number: 7196760Abstract: The invention provides a reflection type liquid crystal device, and a projection type display and electronic equipment in which display defects caused by disclination are reduced, minimized or prevented from being produced for a highly fine liquid crystal display with a space between pixels made to be narrow to make it possible to provide a high-contrast and bright display. A liquid crystal device includes a liquid crystal layer sandwiched between a first substrate and a second substrate, and a first electrode and a second electrode formed on a face of the above-described second substrate on a side of the above-described liquid crystal layer. The above-described first electrode and the above-described second electrode are formed so that an electric field substantially parallel to the surface of the substrate with respect to the above-described liquid crystal layer can be applied thereto.Type: GrantFiled: January 12, 2004Date of Patent: March 27, 2007Assignee: Seiko Epson CorporationInventors: Tsuyoshi Maeda, Kinya Ozawa, Osamu Okumura, Eiji Okamoto, Hirotaka Kawata, Toshiharu Matsushima, Takumi Seki, Kimitaka Kamijo
-
Publication number: 20060274241Abstract: When a backlight 15 is turned on in a dark environment, white light emerging from the surface of a light guide plate 15b passes through a polarizer 12 and a retardation film 14, enters the interior of the liquid crystal cell, passes through openings of reflective electrodes 7, and is introduced into a liquid crystal layer 3. The light introduced into the liquid crystal layer 3 passes through a color filter 5, emerges from the liquid crystal cell, and passes through the retardation film 13 and the polarizer 11 towards the exterior. In a lighted environment, the light incident on the polarizer 11 passes through the liquid crystal layer 3, is reflected by the reflective electrode 7, and passes through the polarizer 11 again and is emitted towards the exterior.Type: ApplicationFiled: July 13, 2006Publication date: December 7, 2006Applicant: SEIKO EPSON CORPORATIONInventors: Tsuyoshi MAEDA, Eiji OKAMOTO, Takumi SEKI, Osamu OKUMURA