Patents by Inventor Hisashi Watanabe
Hisashi Watanabe 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: 8797234Abstract: A direct-viewing type display device according to the present invention includes: at least one display panel having a display region and a frame region provided outside the display region, with a boundary extending along the first direction between the display region and the frame region; and at least one light-transmitting cover disposed on a viewer's side of the at least one display panel. The at least one light-transmitting cover includes a lens portion disposed astride the boundary for refracting a portion of light going out from the display region toward the frame region; and a viewer-side surface of the lens portion is a curved surface, and a rear-side surface of the lens portion is also a curved surface.Type: GrantFiled: June 18, 2009Date of Patent: August 5, 2014Assignee: Sharp Kabushiki KaishaInventors: Hisashi Watanabe, Satoshi Shibata
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Patent number: 8780015Abstract: A direct-viewing type display device 100a includes: a display panel 10 having a display region 31 and a frame region 30 formed outside the display region; and a light guide element 21A having an incident face 21a, an outgoing face 21b, and a plurality of light guide paths formed between the incident face and the outgoing face. The incident face of the light guide element is disposed so as to overlap a portion 32 of a peripheral display region adjoining the frame region of the display panel along the first axis, and be parallel to the surface of the display panel. The outgoing face 21b of the light guide element has a distance from the incident face 21a that increases away from the portion 32 of the peripheral display region and toward the frame region 30 along the first axis, and extends to a position overlapping the frame region 30.Type: GrantFiled: March 27, 2009Date of Patent: July 15, 2014Assignee: Sharp Kabushiki KaishaInventor: Hisashi Watanabe
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Publication number: 20140168581Abstract: A liquid crystal display panel (100A) is a liquid crystal display panel having a displaying region (81) including a plurality of pixel regions (31), including: a liquid crystal layer (1) having a plurality of liquid crystal regions (11) containing a nematic liquid crystal material and polymer-containing walls (12) between adjacent ones of the plurality of liquid crystal regions (11); and a first substrate (2) and a second substrate (3) having the liquid crystal layer (1) retained therebetween. The liquid crystal layer (1) extends to at least one side face of the liquid crystal display panel (100A). The distance between at least one side face of the second substrate (3) and a pixel region (11) that is located at the outermost edge among the plurality of pixel regions (11) while being adjacent to the at least one side face is less than 0.2 mm.Type: ApplicationFiled: July 25, 2012Publication date: June 19, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Hisashi Watanabe, Akira Sakai, Yuichi Iyama, Akiko Miyazaki, Eiji Satoh, Yasushi Asaoka
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Publication number: 20140152945Abstract: A liquid crystal display panel (100A) includes: a first substrate (2) and a second substrate (3), a liquid crystal layer (1) retained between the first substrate (2) and the second substrate (3), and plurality of pixels. The liquid crystal layer (1) has a first liquid crystal region (81) and a second liquid crystal region (82) provided outside the first liquid crystal region (81). The first liquid crystal region (81) is essentially composed of a nematic liquid crystal material alone, whereas the second liquid crystal region (82) has a plurality of liquid crystal subregions (11) containing a nematic liquid crystal material and polymer-containing walls (12) formed between adjacent ones of the plurality of liquid crystal subregions (11). The plurality of pixels include pixels accounting for the first liquid crystal region (81) and pixels accounting for the second liquid crystal region (82).Type: ApplicationFiled: July 25, 2012Publication date: June 5, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Hisashi Watanabe, Akira Sakai, Yuichi Iyama, Akiko Miyazaki, Eiji Satoh, Yasushi Asaoka
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Publication number: 20140146563Abstract: A front light (1) includes a light source (8), a light guide plate (9), and a plurality of dots (4) that are provided on a surface of the light guide plate (9), which surface faces a light exit surface of the light guide plate (9). Each of the plurality of dots (4) includes (i) a light reflective layer (2) for reflecting light toward the light guide plate (9), and (ii) a dark layer (3) for absorbing light, the dark layer completely covering the light reflective layer (2) so as to be in contact with the light guide plate (9) without any gap between the light guide plate (9) and the dark layer (3).Type: ApplicationFiled: June 27, 2012Publication date: May 29, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Hisashi Watanabe, Tomoko Teranishi, Toshiki Matsuoka, Takahiro Nakahara, Takuma Tomotoshi, Eiji Satoh, Kohzoh Nakamura, Yohzoh Narutaki
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Patent number: 8690414Abstract: A plurality of display panels include a display region and a frame region. The plurality of display panels include first and second display panels adjoining each other; the frame region of the first display panel is overlapped by a side face of the second display panel so that an angle defined by viewer-side surfaces is more than 0° but less than 180°; first and second light guide elements are disposed on the viewer's side of peripheral display regions; the light guide elements have incident and outgoing faces and a plurality of light guiding portions; the distance between the incident and outgoing faces increases away from the peripheral display region toward the frame region; the volume of the first light guide element is larger than that of the second light guide element; and the outgoing faces of the first and second light guide elements are covered by a functional film.Type: GrantFiled: March 15, 2010Date of Patent: April 8, 2014Assignee: Sharp Kabushiki KaishaInventors: Takuma Tomotoshi, Hisashi Watanabe
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Patent number: 8692737Abstract: A direct-viewing type display device includes: a display panel having a display region and a frame region provided outside the display region, with a boundary extending along a first direction between the display region and the frame region, the display region having a plurality of pixels arrayed therein; and a light-transmitting cover disposed on the viewer's side. The light-transmitting cover includes a lens portion disposed astride the boundary for refracting a portion of light going out from the display region toward the frame region. The lens portion refracts the light so that light emitted from the plurality of pixels in the display region has a substantially equal pitch on a plane which is perpendicular to the first direction. A line of intersection between the plane which is perpendicular to the first direction and a viewer-side surface of the lens portion is a curve which is not a circular arc.Type: GrantFiled: June 15, 2009Date of Patent: April 8, 2014Assignee: Sharp Kabushiki KaishaInventors: Hisashi Watanabe, Satoshi Shibata
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Patent number: 8619210Abstract: A direct-viewing type display device 100 according to the present invention includes a plurality of display panels, having display regions 31a and 31b and frame regions 30a and 30b.Type: GrantFiled: July 24, 2009Date of Patent: December 31, 2013Assignee: Sharp Kabushiki KaishaInventor: Hisashi Watanabe
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Publication number: 20130308075Abstract: A resin layer 3 is provided on the outer side of a sealing material 23 so as to cover the sealing material 23, and sealing strength of the sealing material 23 is increased by supporting the sealing material 23 from the outer side using the resin layer 3, by integrally bonding the resin layer 3 and the sealing material 23.Type: ApplicationFiled: September 20, 2011Publication date: November 21, 2013Applicant: SHARP KABUSHIKI KAISHAInventor: Hisashi Watanabe
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Patent number: 8572893Abstract: A direct-viewing type display device includes a display panel including a display region which has a plurality of pixel lines extending in a first direction and a frame region, the display region and the frame region having a border extending in the first direction therebetween; and a light-transmitting cover. The plurality of pixel lines include a first pixel line adjoining the border, a second pixel line, and a third pixel line. The first pixel line, the second pixel line and the third pixel line are of different colors from each other. The light-transmitting cover includes a lens portion located over the border, the lens portion refracting a part of light going toward the frame region. A light diffusion structure is provided between the lens portion and a part of the display panel including the first pixel line, the second pixel line and the third pixel line.Type: GrantFiled: May 27, 2010Date of Patent: November 5, 2013Assignee: Sharp Kabushiki KaishaInventor: Hisashi Watanabe
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Publication number: 20130279177Abstract: A display apparatus capable of reliably supporting a display panel and making a juncture between displays inconspicuous is provided. A display includes a liquid crystal panel having a front surface and a back surface, a module containing a backlight unit for driving the liquid crystal panel, a rear surface side housing for protecting and holding the backlight unit, and a convex lens arranged to cover a frame region of the liquid crystal panel, for guiding light from the front surface of the liquid crystal panel to a front surface side of the frame region and supporting the liquid crystal panel from the front surface.Type: ApplicationFiled: January 6, 2012Publication date: October 24, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Hiroyuki Moriwaki, Kazutaka Hanaoka, Yozo Narutaki, Hisashi Watanabe
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Patent number: 8541934Abstract: A direct-viewing type display device (100A) of the present invention includes: a display panel which has a display region (10A) that can be altered into a transparent state and a frame region (10F) provided outside the display region; and a light-transmitting cover (20) provided on a front side of the display panel. The light-transmitting cover includes a lens portion (22) positioned so as to overlap a region that includes part of the frame region of the display panel and part of a peripheral display region (10D) within the display region which adjoins the part of the frame region. The display device further includes a housing (30) which has a housing portion (36) provided at least on a side surface (10b) of the display panel. Part of light going out from the part of the peripheral display region and/or part of light entering the housing portion on a rear side goes out on a front side of the housing portion (36).Type: GrantFiled: April 20, 2010Date of Patent: September 24, 2013Assignee: Sharp Kabushiki KaishaInventors: Hisashi Watanabe, Yasushi Asaoka
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Publication number: 20130242230Abstract: A liquid crystal display device (100) includes a liquid crystal display cell (10), a light-transmitting cover (20) having a lens portion (22) and disposed on a viewer side, a backlight (40) disposed on an opposite side to the viewer side, a light diffusion layer (38) disposed between the backlight (40) and the light-transmitting cover (20), and a refraction-index adjusting layer (28) that fixes the liquid crystal display cell (10) and the light-transmitting cover (20) to each other. A refraction index difference between the light-transmitting cover (20) and the refraction-index adjusting layer (28) is smaller than a refraction index difference between the light-transmitting cover (20) and air.Type: ApplicationFiled: November 29, 2011Publication date: September 19, 2013Applicant: SHARP KABUSHIKI KAISHAInventor: Hisashi Watanabe
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Patent number: 8531623Abstract: A direct-viewing type display device 100A includes: a display panel which has a display region 10A and a frame region 10F provided outside the display region; and a light-transmitting cover 20 provided on a viewer's side of the display panel. The light-transmitting cover includes a lens portion 22 positioned so as to overlap a region that includes part of the frame region of the display panel and part of a peripheral display region 10D within the display region which adjoins the part of the frame region. The display device further includes a housing 30 which has a housing portion 36 provided at least on a side surface 10b of the display panel. Part of light going out from the part of the peripheral display region and/or part of light entering the housing portion on a rear side goes out on a viewer's side of the housing portion 36. According to the present invention, a direct-viewing type display device is provided which includes a sole display panel and in which the frame is visually obscured.Type: GrantFiled: February 2, 2010Date of Patent: September 10, 2013Assignee: Sharp Kabushiki KaishaInventor: Hisashi Watanabe
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Publication number: 20130176352Abstract: A direct-viewing type display device (100) includes: first and second display panels (10a, 20a); and a joint region (10Jab) containing a linking portion (10ab) which links together the first frame region (10aF) and the second frame region (10bF) and containing the first and second frame regions (10aF, 10bF). The first display region (10aD) of the first display panel (10a) has a first peripheral display region (10aDPa) which adjoins the first frame region (10aF) and a first middle display region (10aDC) which adjoins the first peripheral display region (10aDPa). Each region has a plurality of unit-regions, and an average luminance LPa of a plurality of first peripheral unit-display regions (10aDPa-UA) contained in the first peripheral display region (10aDPa) is higher than an average luminance LCa of a plurality of first middle unit-display regions (10aDC-UA) contained in the first middle display region (10aDC).Type: ApplicationFiled: September 9, 2011Publication date: July 11, 2013Applicant: Sharp Kabushiki kaishaInventors: Hisashi Watanabe, Kenji Okamoto
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Patent number: 8472114Abstract: A direct-viewing type display device 100a includes a display panel 100 having a display region 120 including pixels arrayed in a row direction and a column direction and a frame region 130 provided outside the display region, such that a first border line B1 and a second border line B2 exist between the display region and the frame region; and a light-transmitting cover 200 disposed on the viewer's side.Type: GrantFiled: December 14, 2009Date of Patent: June 25, 2013Assignee: Sharp Kabushiki KaishaInventor: Hisashi Watanabe
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Publication number: 20130082901Abstract: An interface (303) between adjacent ones of light guide sections (310) is inclined with respect to an incident surface (301) and an emission surface (302) of the light guide element (300A) so that an incident surface (311) of at least a part of the light guide sections (310) overlaps a part of a display region (202) in a liquid crystal panel (200A) and an emission surface (312) of said at least a part of the light guide sections (310) overlaps at least a part of a frame region (203) above which an image on the display region (202) is to be displayed. Furthermore, a relation 5°<?<85° is met, where ? indicates an angle between a direction of a borderline between adjacent light guide sections (310) on a plan view and a direction in which pixels (201) adjacent to the frame region (203) are aligned.Type: ApplicationFiled: April 5, 2011Publication date: April 4, 2013Applicant: Sharp Kabushiki KaishaInventors: Hisashi Watanabe, Shigeto Yoshida, Kentarou Imamura
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Patent number: 8405804Abstract: A liquid crystal display device of an embodiment of the present invention includes a liquid crystal layer, a specular reflection layer, the polarization layer disposed on the viewer's side, a retardation layer interposed between the liquid crystal layer and the polarization layer, and a light scattering layer disposed on the viewer's side of the polarization layer. The light scattering layer has a scattering surface. The scattering surface includes a macro uneven structure which has light scatterability and a micro uneven structure which is superimposedly formed over the macro uneven structure and which is smaller than visible light wavelengths.Type: GrantFiled: August 1, 2008Date of Patent: March 26, 2013Assignee: Sharp Kabushiki KaishaInventors: Hisashi Watanabe, Tokio Taguchi
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Publication number: 20130038826Abstract: An optical system according to an embodiment of the present invention includes a reflective imaging element having a first principal face which is struck by light emitted from a display panel, a second principal face parallel to the first principal face, and two mutually-orthogonal specular elements being perpendicular to the first principal face, and causes an image displayed on a display surface of the display panel to form an image at a position of planar symmetry with respect to the reflective imaging element as a plane of symmetry. A transparent substrate which is disposed on at least either the first principal face side or the second principal face side of the reflective imaging element is further included, and first light striking the transparent substrate is linearly polarized light, with a large proportion of p-polarized light.Type: ApplicationFiled: April 26, 2010Publication date: February 14, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Kentarou Imamura, Shigeto Yoshida, Takafumi Shimatani, Hisashi Watanabe
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Publication number: 20130038934Abstract: An optical element according to an embodiment of the present invention includes: a reflective imaging element for reflecting light from an object an even number of times to cause an image of the object to be formed; a first polarizer disposed on a light-outgoing side of the reflective imaging element; and a first phase difference plate disposed between the reflective imaging element and the first polarizer.Type: ApplicationFiled: April 26, 2011Publication date: February 14, 2013Applicant: Sharp Kabushiki KaishaInventors: Kentarou Imamura, Shigeto Yoshida, Takafumi Shimatani, Hisashi Watanabe