Patents by Inventor Takehito Fuchida
Takehito Fuchida 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: 11966050Abstract: The head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and includes a retardation layer and a polarizer in the stated order from a cover member side. The retardation layer has an in-plane retardation Re(550) of 3,000 nm or more. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30° or less, or is 40° or more.Type: GrantFiled: October 16, 2018Date of Patent: April 23, 2024Assignee: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Yoshiaki Asanoi, Katsunori Takada
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Patent number: 11933979Abstract: A head-up display apparatus that is excellent in viewability. A head-up display apparatus according to an embodiment of the present invention includes: a display unit configured to emit projection light, the display unit including a display cell, and a first polarizing plate with a retardation layer, which is arranged on an emission side of the display cell, and which includes a polarizer and a first retardation layer in the stated order from a display cell side; at least one reflector configured to reflect the projection light; and a second polarizing plate with a retardation layer, which is arranged on a reflection surface of the reflector, and which includes a polarizer and a second retardation layer in the stated order from a reflector side. The first retardation layer and the second retardation layer each have an in-plane retardation Re(550) of from 100 nm to 200 nm.Type: GrantFiled: September 24, 2019Date of Patent: March 19, 2024Assignee: NITTO DENKO CORPORATIONInventors: Yoshiaki Asanoi, Takehito Fuchida, Katsunori Takada
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Patent number: 11650419Abstract: Provided is a head-up display apparatus that is excellent in viewability when a display screen is viewed through a pair of polarized sunglasses, and is excellent in heat resistance. The head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate arranged on a housing inner side of the cover member. The cover member has an in-plane retardation Re(550) of 3,000 nm or more. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30° or less, or is 40° or more.Type: GrantFiled: October 16, 2018Date of Patent: May 16, 2023Assignee: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Yoshiaki Asanoi, Katsunori Takada
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Patent number: 11567315Abstract: A head-up display apparatus includes: a display unit, which includes a display cell and a first polarizing plate with a retardation layer arranged on an output side of the display cell, the first polarizing plate with a retardation layer including a polarizer and a first retardation layer in the stated order from the display cell side, and which is configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and which is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a second polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and which includes a polarizer and a second retardation layer in the stated order from the cover member side.Type: GrantFiled: October 16, 2018Date of Patent: January 31, 2023Assignee: NITTO DENKO CORPORATIONInventors: Yoshiaki Asanoi, Takehito Fuchida, Katsunori Takada
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Patent number: 11402695Abstract: A liquid crystal display apparatus having improved viewing angle characteristics in a region vertically asymmetrical. A liquid crystal display apparatus of the present invention includes: a liquid crystal cell including a liquid crystal layer containing liquid crystal molecules aligned in homogeneous alignment under a state in which an electric field is absent; a first polarizer arranged on a viewer side of the liquid crystal cell; a second polarizer arranged on a back surface side of the liquid crystal cell; a first optical compensation layer arranged between the liquid crystal cell and the first polarizer; and a second optical compensation layer arranged between the liquid crystal cell and the first optical compensation layer. A refractive index nz1 in a thickness direction of the first optical compensation layer is less than 1.5187, and a refractive index nz2 in a thickness direction of the second optical compensation layer is less than 1.5340.Type: GrantFiled: April 20, 2018Date of Patent: August 2, 2022Assignee: NITTO DENKO CORPORATIONInventors: Ryo Kawamura, Takehito Fuchida, Katsunori Takada, Yoshitsugu Kitamura
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Publication number: 20220082825Abstract: There is provided a head-up display apparatus, which is excellent in heat resistance and is suppressed in occurrence of air bubbles under a high-temperature environment. A head-up display apparatus according to an embodiment of the present invention includes: a display unit configured to emit projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate, which is arranged on a housing inner side of the cover member, and includes a pressure-sensitive adhesive layer and a polarizer in the stated order from a cover member side. An interlayer adhesive strength between the cover member and the pressure-sensitive adhesive layer is 39 N/25 mm or more.Type: ApplicationFiled: November 8, 2019Publication date: March 17, 2022Applicant: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Yoshiaki Asanoi, Akinori Izaki
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Publication number: 20220082746Abstract: There is provided a head-up display apparatus, which is excellent in heat resistance and is suppressed in occurrence of air bubbles under a high-temperature environment. A head-up display apparatus according to an embodiment of the present invention includes: a display unit configured to emit projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate, which is arranged on a housing inner side of the cover member, and includes a pressure-sensitive adhesive layer and a polarizer in the stated order from a cover member side. An interlayer adhesive strength between the cover member and the pressure-sensitive adhesive layer is 30 N/25 mm or more.Type: ApplicationFiled: November 8, 2019Publication date: March 17, 2022Applicant: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Yoshiaki Asanoi, Akinori Izaki
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Patent number: 11269212Abstract: An object of the present invention is to provide a polarizer having a neutralized hue without any increase in transmittance. A polarizer of the present invention having a transmittance parameter represented by the equation (1) of 0.8 or more and a hue parameter represented by the equation (2) of 5 or less: Transmittance parameter=T420/T550??(1) in the equation (1), T420 represents a parallel transmittance at a wavelength of 420 nm and T550 represents a parallel transmittance at a wavelength of 550 nm; Hue parameter=(a2+b2)??(2) in the equation (2), a represents a parallel hue value ‘a’ and b represents a parallel hue value ‘b’.Type: GrantFiled: September 11, 2018Date of Patent: March 8, 2022Assignee: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Shusaku Goto, Katsunori Takada, Yoshitsugu Kitamura
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Publication number: 20220003996Abstract: A head-up display apparatus that is excellent in viewability. A head-up display apparatus according to an embodiment of the present invention includes: a display unit configured to emit projection light, the display unit including a display cell, and a first polarizing plate with a retardation layer, which is arranged on an emission side of the display cell, and which includes a polarizer and a first retardation layer in the stated order from a display cell side; at least one reflector configured to reflect the projection light; and a second polarizing plate with a retardation layer, which is arranged on a reflection surface of the reflector, and which includes a polarizer and a second retardation layer in the stated order from a reflector side. The first retardation layer and the second retardation layer each have an in-plane retardation Re(550) of from 100 nm to 200 nm.Type: ApplicationFiled: September 24, 2019Publication date: January 6, 2022Applicant: NITTO DENKO CORPORATIONInventors: Yoshiaki Asanoi, Takehito Fuchida, Katsunori Takada
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Patent number: 11215821Abstract: A head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and includes a retardation layer and a polarizer in the stated order from a cover member side. The retardation layer has an in-plane retardation Re(550) of from 100 nm to 200 nm. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30° or less, or is 40° or more.Type: GrantFiled: October 16, 2018Date of Patent: January 4, 2022Assignee: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Yoshiaki Asanoi, Katsunori Takada
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Publication number: 20210260852Abstract: Provided is a laminate with a glass layer having excellent surface hardness and impact resistance. A laminate with a glass layer of the present invention includes a glass layer, a first pressure-sensitive adhesive layer, an impact absorbing layer, and a second pressure-sensitive adhesive layer in the stated order. The laminate with a glass layer has a pencil hardness of 5 H or more, and according to the laminate with a glass layer, an impact amount SA detected when a stainless-steel ball having a weight of 10 g and a diameter of 13 mm is vertically dropped from a height of 40 cm onto a surface of an impact detection sensor and an impact amount SB detected when the stainless-steel ball is vertically dropped from a height of 40 cm onto the laminate with a glass layer placed on the surface of the impact detection sensor satisfy the following relationship: {(SA?SB)/SA}×100?25(%).Type: ApplicationFiled: March 12, 2020Publication date: August 26, 2021Applicant: NITTO DENKO CORPORATIONInventors: Hong Chan Cho, Takehito Fuchida
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Publication number: 20210191119Abstract: A head-up display apparatus includes: a display unit, which includes a display cell and a first polarizing plate with a retardation layer arranged on an output side of the display cell, the first polarizing plate with a retardation layer including a polarizer and a first retardation layer in the stated order from the display cell side, and which is configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and which is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a second polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and which includes a polarizer and a second retardation layer in the stated order from the cover member side.Type: ApplicationFiled: October 16, 2018Publication date: June 24, 2021Applicant: NITTO DENKO CORPORATIONInventors: Yoshiaki Asanoi, Takehito Fuchida, Katsunori Takada
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Publication number: 20210191118Abstract: The head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and includes a retardation layer and a polarizer in the stated order from a cover member side. The retardation layer has an in-plane retardation Re(550) of 3,000 nm or more. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30° or less, or is 40° or more.Type: ApplicationFiled: October 16, 2018Publication date: June 24, 2021Applicant: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Yoshiaki Asanoi, Katsunori Takada
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Publication number: 20210191117Abstract: A head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and includes a retardation layer and a polarizer in the stated order from a cover member side. The retardation layer has an in-plane retardation Re(550) of from 100 nm to 200 nm. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30° or less, or is 40° or more.Type: ApplicationFiled: October 16, 2018Publication date: June 24, 2021Applicant: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Yoshiaki Asanoi, Katsunori Takada
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Patent number: 10955699Abstract: There is provided an optical laminate that can achieve a liquid crystal display apparatus in which the occurrence of moire is suppressed, and which is excellent in brightness and viewing angle characteristic. An optical laminate of the present invention includes in the stated order: a polarizer; a light-diffusing pressure-sensitive adhesive layer; a matte layer; and a louver layer. The louver layer has light-transmitting portions each having a trapezoidal section arrayed along a film plane, and light-absorbing portions each having a trapezoidal section arrayed between the light-transmitting portions. A haze value H of the light-diffusing pressure-sensitive adhesive layer and a bias angle B of the louver layer satisfy relationships represented by the following expressions (1) to (3): 2?B?6??(1) 20?H?60??(2) B×H?40??(3) where the bias angle means a tilt angle of each of the trapezoidal sections with respect to a normal direction.Type: GrantFiled: September 22, 2017Date of Patent: March 23, 2021Assignee: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Hiroaki Fumoto, Katsunori Takada, Yoshitsugu Kitamura
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Patent number: 10942387Abstract: An object of the present invention is to provide an optical laminate that can achieve an excellent reflection hue and an excellent viewing angle characteristic. An optical laminate of the present invention includes a polarizer; a retardation layer configured to substantially function as a ?/4 plate; and a light-diffusing layer. The polarizer has a hue a of from ?1.2 to 0 and a hue b of from 0 to 3.0.Type: GrantFiled: September 11, 2018Date of Patent: March 9, 2021Assignee: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Katsunori Takada, Yoshitsugu Kitamura
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Publication number: 20200341271Abstract: Provided is a head-up display apparatus that is excellent in viewability when a display screen is viewed through a pair of polarized sunglasses, and is excellent in heat resistance. The head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate arranged on a housing inner side of the cover member. The cover member has an in-plane retardation Re(550) of 3,000 nm or more. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30° or less, or is 40° or more.Type: ApplicationFiled: October 16, 2018Publication date: October 29, 2020Applicant: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Yoshiaki Asanoi, Katsunori Takada
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Publication number: 20200310192Abstract: There is provided an optical member that can suppress a reduction in viewability when a liquid crystal display apparatus with a protective cover is viewed through polarized sunglasses at low cost. An optical member according to an embodiment of the present invention includes: a polarizing film; and a protective cover. The protective cover has an in-plane retardation of 1,000 nm or more. An angle formed by a slow axis of the protective cover and an absorption axis of the polarizing film is from 40° to 50°.Type: ApplicationFiled: June 29, 2017Publication date: October 1, 2020Applicant: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Hiroaki Fumoto, Katsunori Takada, Yoshitsugu Kitamura
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Publication number: 20190285937Abstract: There is provided an optical laminate that can achieve a liquid crystal display apparatus in which the occurrence of moire is suppressed, and which is excellent in brightness and viewing angle characteristic. An optical laminate of the present invention includes in the stated order: a polarizer; a light-diffusing pressure-sensitive adhesive layer; a matte layer; and a louver layer. The louver layer has light-transmitting portions each having a trapezoidal section arrayed along a film plane, and light-absorbing portions each having a trapezoidal section arrayed between the light-transmitting portions. A haze value H of the light-diffusing pressure-sensitive adhesive layer and a bias angle B of the louver layer satisfy relationships represented by the following expressions (1) to (3): 2?B?6??(1) 20?H?60??(2) B×H?40??(3) where the bias angle means a tilt angle of each of the trapezoidal sections with respect to a normal direction.Type: ApplicationFiled: September 22, 2017Publication date: September 19, 2019Applicant: NITTO DENKO CORPORATIONInventors: Takehito Fuchida, Hiroaki Fumoto, Katsunori Takada, Yoshitsugu Kitamura
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Publication number: 20190227364Abstract: A liquid crystal display apparatus having improved viewing angle characteristics in a region vertically asymmetrical. A liquid crystal display apparatus of the present invention includes: a liquid crystal cell including a liquid crystal layer containing liquid crystal molecules aligned in homogeneous alignment under a state in which an electric field is absent; a first polarizer arranged on a viewer side of the liquid crystal cell; a second polarizer arranged on a back surface side of the liquid crystal cell; a first optical compensation layer arranged between the liquid crystal cell and the first polarizer; and a second optical compensation layer arranged between the liquid crystal cell and the first optical compensation layer. A refractive index nz1 in a thickness direction of the first optical compensation layer is less than 1.5187, and a refractive index nz2 in a thickness direction of the second optical compensation layer is less than 1.5340.Type: ApplicationFiled: April 20, 2018Publication date: July 25, 2019Applicant: NITTO DENKO CORPORATIONInventors: Ryo Kawamura, Takehito Fuchida, Katsunori Takada, Yoshitsugu Kitamura