Patents by Inventor Chikanori Tsukamura
Chikanori Tsukamura 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: 11433415Abstract: A nozzle adapter comprises a first portion having a first channel; and a second portion having a second channel, a paste material entering the second channel along the first direction and released from the second channel along a second direction, wherein the second portion has a nozzle connecting part, to which a nozzle is connected; a downstream end of the second channel is linked to the nozzle connecting part; the first portion has a hollow part for fitting the second portion, the hollow part being formed along the second direction, or along a third direction; and a downstream end of the first channel is linked to the hollow part.Type: GrantFiled: October 3, 2017Date of Patent: September 6, 2022Assignee: SAKAI DISPLAY PRODUCTS CORPORATIONInventors: Kenta Takeuchi, Chikanori Tsukamura
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Patent number: 11067857Abstract: Provided are: a display panel whereby a frame can be narrowed, while ensuring conduction between substrates; a display device; and a method for manufacturing the display panel. The display panel is provided with: a first substrate having a surface, on which an electrode layer is formed; a second substrate having a surface, on which a wiring path for supplying the electrode layer with signals is formed; and a sealing section that defines a space sealed between the first substrate surface and the second substrate surface, which are facing each other. The display panel is also provided with a columnar section that electrically connects the electrode layer to the wiring path. The columnar section is formed at a position in contact with the sealing section.Type: GrantFiled: September 5, 2016Date of Patent: July 20, 2021Assignee: SAKAI DISPLAY PRODUCTS CORPORATIONInventors: Kenta Takeuchi, Chikanori Tsukamura, Naoki Kotani, Kenichi Mukai
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Publication number: 20210162448Abstract: A nozzle adapter comprises a first portion having a first channel; and a second portion having a second channel, a paste material entering the second channel along the first direction and released from the second channel along a second direction, wherein the second portion has a nozzle connecting part, to which a nozzle is connected; a downstream end of the second channel is linked to the nozzle connecting part; the first portion has a hollow part for fitting the second portion, the hollow part being formed along the second direction, or along a third direction; and a downstream end of the first channel is linked to the hollow part.Type: ApplicationFiled: October 3, 2017Publication date: June 3, 2021Inventors: KENTA TAKEUCHI, CHIKANORI TSUKAMURA
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Publication number: 20190310504Abstract: Provided are: a display panel whereby a frame can be narrowed, while ensuring conduction between substrates; a display device; and a method for manufacturing the display panel. The display panel is provided with: a first substrate having a surface, on which an electrode layer is formed; a second substrate having a surface, on which a wiring path for supplying the electrode layer with signals is formed; and a sealing section that defines a space sealed between the first substrate surface and the second substrate surface, which are facing each other. The display panel is also provided with a columnar section that electrically connects the electrode layer to the wiring path. The columnar section is formed at a position in contact with the sealing section.Type: ApplicationFiled: September 5, 2016Publication date: October 10, 2019Inventors: KENTA TAKEUCHI, CHIKANORI TSUKAMURA, NAOKI KOTANI, KENICHI MUKAI
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Patent number: 8384853Abstract: It is an object to provide a display that can reliably shield visible light in the entire wavelength regions when viewed from an oblique direction and a viewing angle control element used for the display. A viewing angle control liquid crystal panel (2) is comprised of a liquid crystal cell (21) and an emission-side polarizing plate (22). When light having a part of wavelength components (R,G) in the visible wavelength regions enters at least at a predetermined angle, the liquid crystal cell (21) provides the incident light with a phase difference so as to function as a first light-shielding layer that shields the light of the R and G components not to pass through the emission-side polarizing plate (22).Type: GrantFiled: May 20, 2008Date of Patent: February 26, 2013Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
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Publication number: 20120285608Abstract: A method for producing a liquid crystal panel which can prevent a pair of substrates from being bent and can uniformize the cell thickness is provided. According to the method for producing the liquid crystal panel, a black matrix (BM) 24 is formed in one of a pair of prepared substrates 11 and 12, in a peripheral area outer to an area where a liquid crystal layer 13 is to be formed. A panel sealing material which is to form a panel sealing portion 20 is provided so as to overlap at least a part of the BM. An assisting sealing material which is to form an assisting sealing portion 40 is provided on either one of the pair of substrates. The pair of substrates are brought together. A bending prevention member 36 is provided in a part where the assisting sealing portion is formed and/or a part between the assisting sealing portion and the panel sealing portion, in order to prevent the pair of substrates from being bent between the panel sealing portion and the assisting sealing portion.Type: ApplicationFiled: November 8, 2010Publication date: November 15, 2012Applicant: Sharp Kabushiki KaishaInventor: Chikanori Tsukamura
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Patent number: 8199139Abstract: There are provided a viewing angle control device that can provide a pure black display without coloring and have a significantly improved shielding ability in the narrow viewing angle state, and a display using the viewing angle control device. To adjust the VT (voltage-transmittance) characteristics of a viewing angle control liquid crystal panel (2) that switches a viewing angle between a wide viewing angle state and a narrow viewing angle state by using birefringence of liquid crystal, translucent electrode films (205r, 205g, 206b), to which alternating-current voltages with different frequencies are applied, are provided on a portion of at least one of a pair of translucent substrates (201, 202) sandwiching the liquid crystal, the portion corresponding to at least one color of a picture element of a display liquid crystal panel (1), so that the voltage-transmittance characteristics of the liquid crystal are adjusted.Type: GrantFiled: March 13, 2008Date of Patent: June 12, 2012Assignee: Sharp Kabushiki KaishaInventors: Tsuyoshi Okazaki, Takehiko Sakai, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura, Dai Chiba
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Publication number: 20120133867Abstract: A negative C plate (31) is arranged to be between a polarizing plate (32) and a reflective liquid crystal panel (20). A retardation of the negative C plate (31) is set so that a combination of the negative C plate (31) and the liquid crystal panel (20) generates a phase difference of “n?/4+?/8 (n is 0, or a positive or negative integer)” for a one-way light path with respect to linearly-polarized light entering into the liquid crystal display device. This makes it possible to provide, at low cost, a liquid crystal display device whose viewing angle can be narrowed by arbitrarily setting a direction in which visibility is limited.Type: ApplicationFiled: February 6, 2012Publication date: May 31, 2012Applicant: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
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Patent number: 8189147Abstract: A negative C plate (31) is arranged to be between a polarizing plate (32) and a reflective liquid crystal panel (20). A retardation of the negative C plate (31) is set so that a combination of the negative C plate (31) and the liquid crystal panel (20) generates a phase difference of “n?/4+?/8 (n is 0, or a positive or negative integer)” for a one-way light path with respect to linearly-polarized light entering into the liquid crystal display device. This makes it possible to provide, at low cost, a liquid crystal display device whose viewing angle can be narrowed by arbitrarily setting a direction in which visibility is limited.Type: GrantFiled: May 23, 2008Date of Patent: May 29, 2012Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
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Patent number: 8169567Abstract: A viewing angle controlling liquid crystal panel in which uniformity of a shielding effect in a screen is further improved is provided. Linearly polarized light enters a liquid crystal layer. Further, the liquid crystal layer is provided, on a light exit side of the liquid crystal layer, with a polarizing plate transmitting only a component of light having exited from the liquid crystal layer which component is parallel to a polarization axis of the linearly polarized light having entered the liquid crystal layer. Liquid crystal molecules contained in the liquid crystal layer are tilted in a direction parallel to or perpendicular to the polarization axis of the linearly polarized light having entered the liquid crystal layer. In addition, an electrode (26) is provided so that two or more different voltages can be applied to the liquid crystal layer simultaneously.Type: GrantFiled: August 27, 2007Date of Patent: May 1, 2012Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
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Patent number: 8098350Abstract: There are provided a display that can block light so that a display on an image display device is invisible from a wide range of view angles in an oblique direction, and a view angle control element employed therein. In a narrow view angle state, a view angle control liquid crystal panel (2) prevents light in a predetermined wavelength region that has been incident at a polar angle of ?H or more from being transmitted through a polarizing plate (22) by using a phase difference imparted by a liquid crystal cell (21). In the narrow view angle state, a view angle control liquid crystal panel (3) prevents light that has been incident at a polar angle of ?L or more, among light that has been transmitted through the polarizing plate (22), from being transmitted through a polarizing plate (32) by using a phase difference imparted by a liquid crystal cell (31). Consequently, light forming a polar angle of ?L or more is blocked as a whole, which allows the narrow view angle state to cover a wide range.Type: GrantFiled: June 19, 2008Date of Patent: January 17, 2012Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
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Patent number: 8054433Abstract: There are provided a viewing angle control device that can provide a black display without coloring and achieve a significantly improved shielding ability during a narrow viewing angle state, and a display using the same. In order to adjust VT (voltage-transmittance) characteristics of a viewing angle control liquid crystal panel (2) that switches a viewing angle between a wide viewing angle state and a narrow viewing angle state by using birefringence of liquid crystal, the viewing angle control liquid crystal panel (2) includes a translucent dielectric film (206g, 206r) for adjusting the voltage-transmittance characteristics of the liquid crystal at a position corresponding to a picture element of at least one color in a display liquid crystal panel (1) on at least one of a pair of translucent substrates (201, 202) that sandwich the liquid crystal therebetween.Type: GrantFiled: March 13, 2008Date of Patent: November 8, 2011Assignee: Sharp Kabushiki KaishaInventors: Tsuyoshi Okazaki, Takehiko Sakai, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura, Dai Chiba
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Patent number: 8045097Abstract: In a liquid crystal display device including a display liquid crystal panel and a viewing-angle-control liquid crystal panel and capable of switching viewing angle characteristics, a half wavelength plate for setting a viewing restricted direction is provided between the display liquid crystal panel and the viewing-angle-control liquid crystal panel. This makes it possible to realize a liquid crystal display device that allows a viewing restricted direction to be set as appropriate.Type: GrantFiled: April 16, 2007Date of Patent: October 25, 2011Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Tsuyoshi Okazaki, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura, Dai Chiba
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Patent number: 7956940Abstract: A display system includes a liquid crystal display (10) including a backlight (3), a liquid crystal display panel (1), and a viewing angle control panel (2) for controlling the viewing angle of the display panel (1), the display system causing the amount of external light reflected by the liquid crystal display (10) to be relatively larger than the amount of light leaked from the backlight (3) onto the liquid crystal display panel (1). This provides a display system having an enhanced blocking effect.Type: GrantFiled: December 21, 2006Date of Patent: June 7, 2011Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Tsuyoshi Okazaki, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura, Takahiro Sasaki, Dai Chiba
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Patent number: 7948580Abstract: A liquid crystal display includes a backlight (3), a liquid crystal display panel (1), and a viewing angle control panel (2) for controlling the viewing angle of the display panel (1), the liquid crystal display further including a lens sheet (41) provided between the backlight (3) and the liquid crystal display panel (1). This provides a display device system which is capable of providing better blocking.Type: GrantFiled: December 21, 2006Date of Patent: May 24, 2011Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Tsuyoshi Okazaki, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura, Dai Chiba
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Patent number: 7932975Abstract: A liquid crystal display device includes a reflective liquid crystal panel (20) having a liquid crystal panel polarization plate (22), a polarization plate (32) provided on a front surface side of the polarization plate (22) with its absorption axis in parallel with an absorption axis of the polarization plate (22), and a negative C plate (31) provided between the liquid crystal panel polarization plate (22) and the polarization plate (32). The negative C plate (31) sets a direction in which viewing limitation is carried out. Thus, it is possible to provide the liquid crystal display device in which a viewing angle can be narrowed by freely setting, in the reflective liquid crystal panel, the direction in which the viewing limitation should be carried out.Type: GrantFiled: July 5, 2007Date of Patent: April 26, 2011Assignee: Sharp Kabushiki KaishaInventors: Takehiko Sakai, Tsuyoshi Okazaki, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura, Dai Chiba
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Publication number: 20110025962Abstract: A negative C plate (31) is arranged to be between a polarizing plate (32) and a reflective liquid crystal panel (20). A retardation of the negative C plate (31) is set so that a combination of the negative C plate (31) and the liquid crystal panel (20) generates a phase difference of “n?/4+?/8 (n is 0, or a positive or negative integer)” for a one-way light path with respect to linearly-polarized light entering into the liquid crystal display device. This makes it possible to provide, at low cost, a liquid crystal display device whose viewing angle can be narrowed by arbitrarily setting a direction in which visibility is limited.Type: ApplicationFiled: May 23, 2008Publication date: February 3, 2011Inventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
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Patent number: 7880843Abstract: A liquid crystal display device (10) of the present invention includes a backlight (3), a display liquid crystal panel (1) and a viewing angle control panel (2) for switching a viewing angle of the display liquid crystal panel (1) between a wide viewing angle mode and a narrow viewing angle mode. The viewing angle control panel (2) includes a control panel upper polarizing plate (22), a liquid crystal cell (21) and a control panel lower polarizing plate (23) stacked in this order, and phase difference plates (24, 25) are provided between the polarizing plates (22, 23) and the liquid crystal cell (21), respectively. The viewing angle control panel (2) is arranged such that Re1 in a white display portion in the wide viewing angle mode is n?/2 (n is an integer of 1 or more), Re2 in a white display portion in the narrow viewing angle mode is n?/2 (n is an integer of 1 or more), and Re3 in a black display portion in the narrow viewing angle mode is n? (n is an integer of 1 or more).Type: GrantFiled: March 22, 2007Date of Patent: February 1, 2011Assignee: Sharp Kabushiki KaishaInventors: Katsuhiko Morishita, Tsuyoshi Okazaki, Takehiko Sakai, Yoshiharu Kataoka, Chikanori Tsukamura, Dai Chiba
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Publication number: 20100238376Abstract: It is an object to provide a display that can reliably shield visible light in the entire wavelength regions when viewed from an oblique direction and a viewing angle control element used for the display. A viewing angle control liquid crystal panel (2) is comprised of a liquid crystal cell (21) and an emission-side polarizing plate (22). When light having a part of wavelength components (R,G) in the visible wavelength regions enters at least at a predetermined angle, the liquid crystal cell (21) provides the incident light with a phase difference so as to function as a first light-shielding layer that shields the light of the R and G components not to pass through the emission-side polarizing plate (22).Type: ApplicationFiled: May 20, 2008Publication date: September 23, 2010Inventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura
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Publication number: 20100188617Abstract: There are provided a display that can block light so that a display on an image display device is invisible from a wide range of view angles in an oblique direction, and a view angle control element employed therein. In a narrow view angle state, a view angle control liquid crystal panel (2) prevents light in a predetermined wavelength region that has been incident at a polar angle of ?H or more from being transmitted through a polarizing plate (22) by using a phase difference imparted by a liquid crystal cell (21). In the narrow view angle state, a view angle control liquid crystal panel (3) prevents light that has been incident at a polar angle of ?L or more, among light that has been transmitted through the polarizing plate (22), from being transmitted through a polarizing plate (32) by using a phase difference imparted by a liquid crystal cell (31). Consequently, light forming a polar angle of ?L or more is blocked as a whole, which allows the narrow view angle state to cover a wide range.Type: ApplicationFiled: June 19, 2008Publication date: July 29, 2010Inventors: Takehiko Sakai, Dai Chiba, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura