Patents by Inventor Kozo Nakamura
Kozo Nakamura 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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Publication number: 20090273607Abstract: A display device has a pixel that is defined by a plurality of sub-pixels. The sub-pixels include a red sub-pixel representing red, a green sub-pixel representing green, a blue sub-pixel representing blue and a yellow sub-pixel representing yellow. When the pixel represents white, the luminance of the red sub-pixel is lower than its luminance corresponding to the highest gray scale level. In one embodiment, when the pixel represents white, the luminance of the red sub-pixel is preferably in the range of 25% to 96% of its luminance corresponding to the highest gray scale level. Also, the color temperature of white represented by the pixel is preferably higher than 4200 K, more preferably higher than 5000 K.Type: ApplicationFiled: June 5, 2006Publication date: November 5, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Shun Ueki, Kozo Nakamura, Tokio Taguchi, Akiko Itou
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Publication number: 20090259448Abstract: Internal gettering behavior in a silicon substrate is predicted by using an arithmetic expression established among an initial iron contamination concentration Cini in the silicon substrate, a density N of oxygen precipitates, a radius R of the oxygen precipitates, internal gettering heat treatment temperature T, internal gettering heat treatment time t, and a concentration C(t) of iron (Fe) remaining in the silicon substrate after a heat treatment. In the prediction of internal gettering behavior in the silicon substrate, an arithmetic expression is added considering a process in which nuclei of a contaminant heavy metal silicide are generated on the surface of the oxygen precipitates, and a process in which the contaminant heavy metal is gettered by the oxygen precipitates having the contaminant heavy metal silicide nuclei generated on the surface thereof. This invention is also applicable for internal gettering of a contaminant heavy metal other than iron (Fe), such as copper (Cu), nickel (Ni) or the like.Type: ApplicationFiled: June 5, 2006Publication date: October 15, 2009Inventor: Kozo Nakamura
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Publication number: 20090252825Abstract: An antireflective member according to the present invention has an uneven surface pattern, in which unit structures are arranged in x and y directions at respective periods that are both shorter than the shortest wavelength of an incoming light ray, on the surface of a substrate and satisfies the following Inequality (1): ? ? ? x , y ? min < 1 ni + ni · sin ? ? ? ? ? i max ( 1 ) where ?min is the shortest wavelength of the incoming light ray, ?imax is the largest angle of incidence of the incoming light ray, ni is the refractive-index of an incidence medium, ?x is the period of the uneven surface pattern in the x direction, and ?y is the period of the pattern in the y direction. As a result, diffraction of short-wave light components can be reduced in a broad wavelength range.Type: ApplicationFiled: March 26, 2009Publication date: October 8, 2009Applicant: Sharp Kabushiki KaishaInventors: Tokio Taguchi, Shun Ueki, Kozo Nakamura, Kazuhiko Tsuda
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Publication number: 20090250963Abstract: A leg shield for covering a rider's leg from front includes a shielding body positioned forwardly of a foot rest and having a ventilation opening defined therein, and a vent door pivotable about an axis of pivot for selectively opening and closing the ventilation opening. The vent door has first and second ends spaced from each other in a direction conforming to the axis of pivot and is rotatably supported at the first and second ends by first and second door support members, respectively. The axis of pivot is positioned spaced from the ventilation opening in a direction towards an inner surface of the shielding body, and the first and second door support members of the shielding body are positioned spaced away from the ventilation opening when viewed from front.Type: ApplicationFiled: June 16, 2009Publication date: October 8, 2009Inventor: Kozo Nakamura
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Patent number: 7599021Abstract: A liquid crystal display device includes, from its back surface side towards its front surface side: a polarization selective reflection plate (12) which reflects x-directional linearly polarized light and transmits y-directional linearly polarized light; a first polarizing plate (4) which transmits the x-directional linearly polarized light; a liquid crystal display panel (13); and a second polarizing plate (8) which transmits the y-directional linearly polarized light. The polarization selective reflection plate (12) is arranged only on a back surface side of the liquid crystal display panel (13). The y-directional linearly polarized light incident on the back surface side is reflected from the polarization selective reflection plate (12), there by protecting privacy. The x-directional linearly polarized light transmitted reaches the front surface side, via the first polarizing plate (4), the liquid crystal display panel (13), and the second polarizing plate (8).Type: GrantFiled: July 21, 2004Date of Patent: October 6, 2009Assignee: Sharp Kabushiki KaishaInventors: Kazuhiko Tsuda, Shun Ueki, Kozo Nakamura, Tokio Taguchi
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Publication number: 20090211912Abstract: An antireflective member according to the present invention has an uneven surface pattern, in which unit structures are arranged in x and y directions at respective periods that are both shorter than the shortest wavelength of an incoming light ray, on the surface of a substrate and satisfies the following Inequality (1): ? ? ? x , y ? min < 1 ni + ni · sin ? ? ? ? ? i max ( 1 ) where ?min is the shortest wavelength of the incoming light ray, ?imax is the largest angle of incidence of the incoming light ray, ni is the refractive index of an incidence medium, ?x is the period of the uneven surface pattern in the x direction, and ?y is the period of the pattern in the y direction. As a result, diffraction of short-wave light components can be reduced in a broad wavelength range.Type: ApplicationFiled: March 26, 2009Publication date: August 27, 2009Applicant: Sharp Kabushiki KaishaInventors: Tokio TAGUCHI, Shun UEKI, Kozo NAKAMURA, Kazuhiko TSUDA
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Publication number: 20090210166Abstract: By specifying an initial oxygen concentration in a silicon single crystal and a concentration of thermal donors produced according to a thermal history from 400° C. to 550° C. that the silicon single crystal undergoes during crystal growth, a nucleation rate of oxygen precipitates produced in the silicon single crystal while the silicon single crystal is subjected to a heat treatment is determined. Further, by specifying the heat treatment condition of the silicon single crystal, an oxygen precipitate density and an amount of precipitated oxygen under a given heat treatment condition are predicted by calculation.Type: ApplicationFiled: January 27, 2005Publication date: August 20, 2009Applicant: KOMATSU DENSHI KINZOKU KABUSHIKI KAISHAInventors: Kozo Nakamura, Junsuke Tomioka, Tetsuro Akagi, Shiro Yoshino
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Patent number: 7561231Abstract: A double-sided display which can suitable carry out black display both in a well-lighted place and a dark place is provided. The following members are disposed in the B direction: a first polarizing plate (14) which allows only a linearly polarized light component to pass through; a liquid crystal layer (13) which, when a voltage is applied thereto, optically rotates and causes linearly polarized light in one direction to be linearly polarized light in the other direction, while, when no voltage is applied, does not alter the direction of the linearly polarized light; a polarizing selective reflector (16) which reflects the linearly polarized light in one direction while allows the linearly polarized light in the other direction to pass through; and a second polarizing plate (15) which absorbs the light in one direction while allows the light in the other direction to pass through. The polarizing selective reflector (16) is disposed only in the B direction of the liquid crystal layer (13).Type: GrantFiled: June 1, 2007Date of Patent: July 14, 2009Assignee: Sharp Kabushiki KaishaInventors: Makoto Kanbe, Kazuhiko Tsuda, Kozo Nakamura, Tokio Taguchi, Shun Ueki, Satoru Kishimoto
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Publication number: 20090141221Abstract: The present invention provides a transflective display device capable of extending a color reproduction range and reducing a difference in white balance between transmissive display and reflective display. The display device of the present invention is a transflective display device including four or more filters having different colors in a pixel, each of the four or more filters having different colors including: a transmissive region for displaying an image by transmitting light from a backlight; and a reflective region for displaying an image by reflecting surrounding light, wherein at least two of the four or more filters having different colors are different in a proportion of an area of the reflective region, and the proportion of the area is represented by the following formula (1): Proportion of area of reflective region=Area of reflective region/Effective area of filter??(1).Type: ApplicationFiled: February 2, 2007Publication date: June 4, 2009Inventors: Tokio Taguchi, Akiko Ito, Shun Ueki, Kozo Nakamura
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Publication number: 20090135213Abstract: A display device includes a pixel defined by a plurality of sub-pixels. The plurality of sub-pixels include first, second, third and fourth sub-pixels. A second hue of the second sub-pixel is closest to a first hue of the first sub-pixel in the chromaticity diagram of the L*a*b* color system, and a third hue of the third sub-pixel is closest to the first hue on the opposite side to the second hue with respect to the first hue in the chromaticity diagram of the L*a*b* color system among the hues. The luminances of the plurality of sub-pixels are set such that while a color displayed by the pixel changes from black via the first color of the first sub-pixel to white, the luminance of the first sub-pixel starts to be increased, and when the luminance of the first sub-pixel reaches a predetermined luminance, the luminance of at least one of the second sub-pixel and the third sub-pixel starts to be increased.Type: ApplicationFiled: June 16, 2006Publication date: May 28, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Kazunari Tomizawa, Kozo Nakamura
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Publication number: 20090115952Abstract: A display device in which an image with a wide color reproduction range and bright red can be displayed is provided. The display device is a display device such as, for example, a liquid crystal display device, a cathode ray tube, an organic electroluminescent display device, a plasma display panel, and a field emission display. The display device includes a display surface including a pixel having red, green, blue, and yellow sub-pixels, wherein the red sub-pixel preferably has the largest aperture area.Type: ApplicationFiled: May 31, 2007Publication date: May 7, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Kozo Nakamura, Shun Ueki, Tokio Taguchi, Akiko Itou
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Patent number: 7502674Abstract: In an on-vehicle terminal system operating a plurality of operating systems, control of peripheral devices connected to the on-vehicle terminal system can be continued even if one of the operating systems is stopped. A second operating system monitors an operating status of a first operating system using an OS status monitoring function. When the first operating system stops, a list recording allocation of the peripheral devices is updated to switch the allocation to the second operating system. By doing so, an interrupt signal from a peripheral device is allocated to the second operating system, and accordingly the second operating system can control the peripheral device.Type: GrantFiled: July 24, 2002Date of Patent: March 10, 2009Assignees: Hitachi, Ltd., Xanavi Informatics CorporationInventors: Mariko Okude, Tadashi Kamiwaki, Yoshinori Endo, Hideo Hiroshige, Kozo Nakamura
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Publication number: 20090061140Abstract: A method in which SSDs are reliably reduced while reducing void defects other than the SSDs on a wafer surface, which is essential for an annealed wafer, and ensuring that BMDs serving as gettering source in a bulk are generated, in order to stabilize the quality of the annealed wafer. Considering that annealing a silicon wafer leads to an increase of density (quantity) of deposits associated with oxygen and nitrogen and forming a core of the SSDs, SSDs are decreased by reducing the density (quantity) of the deposits associated with oxygen and nitrogen by controlling three parameters of oxygen concentration, nitrogen concentration and cooling concentration during the process of pulling and growing the silicon single crystal 6 before annealing. Alternatively, SSD is reduced by polishing after annealing.Type: ApplicationFiled: February 14, 2006Publication date: March 5, 2009Applicant: SUMCO TECHXIV KABUSHIKI KAISHAInventors: Shinya Sadohara, Ryota Suewaka, Shiro Yoshino, Kozo Nakamura, Yutaka Shiraishi, Syunji Nonaka
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Publication number: 20090024128Abstract: An external skeletal fixation device reduces load on the patient, is capable of freely moving and deformity correction of a bone and bone fragments, is simple in construction and can be attached to the patient by an operator who has not a very high skill and long experience. An external skeletal fixation device 1 includes a pair of pin clamp units 2 and 3 fixedly holding rodlike members 61 and 62 inserted, respectively, into a first part 9B2 and a second part 9B3 of a bone 9B on the opposite sides, respectively, of a virtual hinge point 9B1 in the bone 9B. The virtual hinge point corresponds to a center of rotational angulation of the bone, a center on which the first and the second part of the bone respectively on the opposite sides of a fracture site of the bone or a part of the osteotomy site for deformity correction are turned, or a center about which a joint turns.Type: ApplicationFiled: March 3, 2005Publication date: January 22, 2009Inventors: Kozo Nakamura, Isao Ohnishi, Masahiko Bessho, Satoru Oohashi, Tsuneo Aoki, Mitsuo Sato, Ryojiro Asano, Kazuo Watanabe, Hiroshi Matsuzawa, Toshiro Uehara, Yoshiharu Saito
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Publication number: 20090021534Abstract: A display device has an improved white balance in white display and excellent display quality, and includes a plurality of pixels each including four sub-pixels More specifically, the display device includes a plurality of pixels each including: a sub-pixel pair of a red (R) sub-pixel and a green (G) sub-pixel; and a sub-pixel pair of a blue (B) sub-pixel and a green (G) sub-pixel, wherein in most of the pixels, a product of an aperture area per sub-pixel and a light amount per unit aperture area, in each of the red (R) sub-pixel and the blue (B) sub-pixel, is approximately two times that of the green (G) sub-pixel.Type: ApplicationFiled: April 20, 2006Publication date: January 22, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Kazunari Tomizawa, Kozo Nakamura
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Publication number: 20090015770Abstract: The present invention provides a transflective display device capable of reducing a difference in white balance between transmissive display and reflective display. The display device of the present invention is a transflective display device including three or more filters having different colors in a pixel, each of the three or more filters having different colors, including: a transmissive region for displaying an image by transmitting light from a backlight; and a reflective region for displaying an image by reflecting surrounding light, wherein, in the reflective region of at least one of a plurality of filters having different colors used for displaying white in reflective display, a light-reducing film which reduces an amount of at least light having a peak wavelength of a visible light transmission spectrum of the at least one of a plurality of filters is arranged, and the visible light transmission spectrum is measured using a standard light source D65.Type: ApplicationFiled: December 28, 2006Publication date: January 15, 2009Inventors: Akiko Ito, Kozo Nakamura, Shun Ueki, Tokio Taguchi
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Publication number: 20080316235Abstract: A display device which exhibits functional effects in which color separation between sub-pixels constituting a pixel is hardly recognized and white line display is easily recognized as one line, in enlargement of the color reproduction range in image display using multi-primary colors, and thereby improves display quality, and provides a liquid crystal display device including such a display device. The display device displays an image constituted by pixels each including sub-pixels of four or more colors, wherein the pixels constituting the display device mainly include a pixel arranging a sub-pixel of a color having the highest brightness value in a central region of the pixel.Type: ApplicationFiled: August 10, 2005Publication date: December 25, 2008Applicant: SHARP KABUSHIKI KAISHAInventors: Shoji Okazaki, Yoshihiro Okada, Kenji Nakamura, Kozo Nakamura
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Patent number: 7383127Abstract: In a communication-type navigation system for downloading map data according to the present invention, a reduction in the amount of map information to be transferred, correction of a position measured by a GPS, and delivery of advertisements are effected. In this system, a terminal 5 stores rough map data in advance. Then, when detailed map data is required, it is downloaded from a map data delivery center to the terminal 5. Further, together with the map data, GPS correction information is delivered to the terminal 5 from the map data delivery center 80. Still further, coupon information associated with an advertisement is displayed and an electronic mail on the coupon information is issued, by the map data delivery center.Type: GrantFiled: September 30, 2005Date of Patent: June 3, 2008Assignees: Hitachi, Ltd., Xanavi Informatics CorporationInventors: Shigeru Matsuo, Kimiyoshi Machii, Katsuaki Tanaka, Kozo Nakamura, Yoshinori Endo, Michio Morioka, Yoshitaka Sumitomo
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Patent number: 7329317Abstract: The present invention is to produce a silicon crystal wherein the boron concentration in the silicon crystal and the growth condition V/G are controlled so that the boron concentration in the silicon crystal is no less than 1×1018 atoms/cm3 and the growth condition V/G falls within the epitaxial defect-free region ?2 whose lower limit line LN1 is the line indicating that the growth rate V gradually drops as the boron concentration increases. A silicon wafer is also produced wherein the boron concentration in the silicon crystal and the growth condition V/G are controlled so as to include at least the epitaxial defect region ?1, and both the heat treatment condition and the oxygen concentration of the silicon crystal are controlled so that no OSF nuclei grow to OSFs.Type: GrantFiled: October 31, 2003Date of Patent: February 12, 2008Assignee: Komatsu Denshi Kinzoku Kabushiki KaishaInventors: Susumu Maeda, Hiroshi Inagaki, Shigeki Kawashima, Shoei Kurosaka, Kozo Nakamura
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Patent number: 7295271Abstract: A twisted nematic liquid crystal display device conducts a display operation in Normally Black mode. The liquid crystal display device includes a liquid crystal cell and two polarizers. The liquid crystal cell includes two substrates and a liquid crystal layer sandwiched between them. The two polarizers face each other with the liquid crystal cell interposed between them. The liquid crystal display device further includes: a first optical compensator provided between one of the two polarizers and the liquid crystal cell so as to compensate for the wavelength dependence of the angle of rotation of polarized light passing through the liquid crystal layer in a black display state; and a second optical compensator provided between the first optical compensator and that polarizer so as to compensate for the wavelength dependence of the ellipticity of the polarized light passing through the liquid crystal layer in the black display state.Type: GrantFiled: April 14, 2004Date of Patent: November 13, 2007Assignee: Sharp Kabushiki KaishaInventors: Kozo Nakamura, Satoru Kishimoto