Patents by Inventor Jin Matsushima
Jin Matsushima 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: 7830481Abstract: A first polarizer and a second polarizer have respective absorption axes extending approximately perpendicularly to each other, and a first retardation plate and a third retardation plate have respective slow axes extending approximately perpendicularly to each other. The first retardation plate and the third retardation plate have respective retardations that are approximately equal to each other, and have respective Nz coefficients that are approximately equal to each other. A second retardation plate and a liquid crystal layer in a transmissive display area have a slow axis and an orientation axis, respectively, extending approximately perpendicularly to each other. The second retardation plate and the liquid crystal layer in the transmissive display area have respective retardations that are approximately equal to each other.Type: GrantFiled: October 2, 2007Date of Patent: November 9, 2010Assignee: NEC LCD Technologies, Ltd.Inventors: Jin Matsushima, Ken Sumiyoshi
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Patent number: 7821599Abstract: A liquid crystal display element is disclosed for displaying an image. The liquid crystal display element comprises a liquid crystal display layer in which voltages are applied to a transmissive display unit and a reflective display unit, defined in one pixel, independently of each other, and a light source for irradiating the liquid crystal display layer with light from the back, and a reflection control element disposed between the liquid crystal display layer and light source. The liquid crystal display element is switched between a reflective state and a transmissive state in accordance with a voltage applied to the reflection control element. The liquid crystal display element is switched among a transmissive display mode, a combined reflective/transmissive display mode, and a reflective display mode, by utilizing the transmissive display unit and reflective display unit to display an image independently of each other.Type: GrantFiled: July 10, 2007Date of Patent: October 26, 2010Assignee: NEC LCD Technologies, LtdInventors: Koji Mimura, Ken Sumiyoshi, Jin Matsushima
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Publication number: 20100238105Abstract: A liquid crystal display device provided herein can be switched between a display mode and a mirror mode, and can ensure a high image quality in the display mode. The liquid crystal display device comprises liquid crystal panel 200 including sub-pixels 254, 255, and back light 213 for irradiating light to the back surface of liquid crystal panel 200. Transmission sub-pixel 254 can be switched into an image display state which can allow irradiated light to exit, and a black display state which does not allow irradiated light to exit. Mirror sub-pixel 255 can be switched between a mirror state which can allow reflected light to exit and a non-mirror state which does not allow reflected light to exit, independently of transmission sub-pixel 254. A control unit places each transmission sub-pixel 254 into the image display state or black display state, and places each mirror sub-pixel 255 into the mirror state or non-mirror state.Type: ApplicationFiled: March 18, 2010Publication date: September 23, 2010Applicant: NEC LCD Technologies, LTD.Inventors: Jin MATSUSHIMA, Michiaki SAKAMOTO, Ken SUMIYOSHI, Kenichi MORI
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Publication number: 20100171775Abstract: An IPS-mode transflective LCD device includes an array of pixels each including a reflective region and a transmissive region juxtaposed. The reflective region operates in a normally-white mode, and the transmissive region operates in a normally-black mode. A common data signal is supplied to the reflective region and transmissive region, whereas the common electrode signal in the transmissive region is an inverted signal of the common electrode signal in the reflective region, to thereby obtain similar gray-scale levels.Type: ApplicationFiled: March 16, 2010Publication date: July 8, 2010Inventors: Michiaki Sakamoto, Jin Matsushima, Hiroshi Nagai, Kenichi Mori, Hidenori Ikeno, Yasuki Kudo, Ken Sumiyoshi
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Patent number: 7705937Abstract: An IPS-mode transflective LCD device includes an array of pixels each including a reflective region and a transmissive region juxtaposed. The reflective region operates in a normally-white mode, and the transmissive region operates in a normally-black mode. A common data signal is supplied to the reflective region and transmissive region, whereas the common electrode signal in the transmissive region is an inverted signal of the common electrode signal in the reflective region, to thereby obtain similar gray-scale levels.Type: GrantFiled: June 29, 2006Date of Patent: April 27, 2010Assignee: NEC LCD Technologies, Ltd.Inventors: Michiaki Sakamoto, Jin Matsushima, Hiroshi Nagai, Kenichi Mori, Hidenori Ikeno, Yasuki Kudo, Ken Sumiyoshi
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Patent number: 7678454Abstract: In a formation method for forming a fine structure in a workpiece (30) containing an etching control component, using an isotropic etching process, a mask (32, 34) having an opening (36) is applied to the workpiece, and the workpiece is etched with an etching solution (38) to thereby form a recess (40), corresponding to a shape of the opening, in a surface of the workpiece. The etching of the workpiece is stopped due to the etching control component eluted out of the workpiece in the etching solution within the recess during the isotropic etching process.Type: GrantFiled: October 30, 2007Date of Patent: March 16, 2010Assignee: NEC CorporationInventors: Shin-Ichi Uehara, Yuko Sato, Ken Sumiyoshi, Setsuo Kaneko, Jin Matsushima
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Patent number: 7643100Abstract: In a formation method for forming a fine structure in a workpiece (30) containing an etching control component, using an isotropic etching process, a mask (32, 34) having an opening (36) is applied to the workpiece, and the workpiece is etched with an etching solution (38) to thereby form a recess (40), corresponding to a shape of the opening, in a surface of the workpiece. The etching of the workpiece is stopped due to the etching control component eluted out of the workpiece in the etching solution within the recess during the isotropic etching process.Type: GrantFiled: October 30, 2007Date of Patent: January 5, 2010Assignee: NEC CorporationInventors: Shin-Ichi Uehara, Yuko Sato, Ken Sumiyoshi, Setsuo Kaneko, Jin Matsushima
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Publication number: 20090251641Abstract: A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.Type: ApplicationFiled: March 16, 2009Publication date: October 8, 2009Inventors: Ken Sumiyoshi, Toshihiro Yoshioka, Hiroshi Hayama, Jin Matsushima
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Patent number: 7598939Abstract: A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.Type: GrantFiled: November 14, 2005Date of Patent: October 6, 2009Assignee: NEC CorporationInventors: Ken Sumiyoshi, Toshihiro Yoshioka, Hiroshi Hayama, Jin Matsushima
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Patent number: 7525732Abstract: In a formation method for forming a fine structure in a workpiece (30) containing an etching control component, using an isotropic etching process, a mask (32, 34) having an opening (36) is applied to the workpiece, and the workpiece is etched with an etching solution (38) to thereby form a recess (40), corresponding to a shape of the opening, in a surface of the workpiece. The etching of the workpiece is stopped due to the etching control component eluted out of the workpiece in the etching solution within the recess during the isotropic etching process.Type: GrantFiled: August 23, 2007Date of Patent: April 28, 2009Assignee: NEC CorporationInventors: Shin-ichi Uehara, Yuko Sato, Ken Sumiyoshi, Setsuo Kaneko, Jin Matsushima
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Publication number: 20090002580Abstract: A liquid crystal display device with a touch panel has a reflective display region and a transmissive display region, at least the transmissive display region including a liquid crystal layer energizable according to a lateral electric field mode. The liquid crystal display device includes a liquid crystal layer held between a pair of substrate disposed in confronting relation to each other, observer-side circular polarizer 9 disposed outwardly of one of the substrates, back-side circular polarizer 8 disposed outwardly of the other substrate, observer-side compensator 11 for reducing refractive index anisotropy of the liquid crystal layer in the reflective display region and the liquid crystal layer in the transmissive display region, and touch panel 13 disposed between observer-side circular polarizer 9 and observer-side compensator 11.Type: ApplicationFiled: March 20, 2008Publication date: January 1, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Jin MATSUSHIMA, Ken Sumiyoshi, Shinichi Uehara
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Publication number: 20080284958Abstract: A liquid-crystal display device makes it possible to attach an optical element to a liquid-crystal display panel with high positional accuracy while avoiding or minimizing the enlargement of the picture-frame region (i.e., the non-display region) induced by the formation of markers on the panel and the increase of the fabrication cost. The panel comprises a main substrate, an opposite substrate, and a liquid crystal enclosed in a gap between the main and opposite substrates, wherein a polarizer plate is attached at least to the opposite substrate. Markers for attaching an optical element to the panel are formed at positions that overlap with the polarizer plate in a non-display region on the main or opposite substrate. Alignment direction regulators regulate the alignment of the liquid crystal molecules to a predetermined direction in the vicinities of the markers, allowing light to pass through at least the opposite substrate.Type: ApplicationFiled: April 8, 2008Publication date: November 20, 2008Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Tsutomu Hiroya, Koji Shigemura, Jin Matsushima
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Publication number: 20080100786Abstract: A first polarizer and a second polarizer have respective absorption axes extending approximately perpendicularly to each other, and a first retardation plate and a third retardation plate have respective slow axes extending approximately perpendicularly to each other. The first retardation plate and the third retardation plate have respective retardations that are approximately equal to each other, and have respective Nz coefficients that are approximately equal to each other. A second retardation plate and a liquid crystal layer in a transmissive display area have a slow axis and an orientation axis, respectively, extending approximately perpendicularly to each other. The second retardation plate and the liquid crystal layer in the transmissive display area have respective retardations that are approximately equal to each other.Type: ApplicationFiled: October 2, 2007Publication date: May 1, 2008Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Jin Matsushima, Ken Sumiyoshi
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Publication number: 20080072468Abstract: In this display device, a pixel constituting a display image is made up of a liquid chamber which can contain liquid. To such a pixel, a liquid supply passage and a liquid discharge passage are connected via a switch. The liquid supply passage, the liquid discharge passage, and the pixel together constitute a flow passage. The switch is configured to control the passage and blockage of liquid in the flow passage. Further, the transfer of liquid into and out of a pixel is performed by liquid transfer means.Type: ApplicationFiled: September 18, 2007Publication date: March 27, 2008Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Ken SUMIYOSHI, Jin MATSUSHIMA
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Publication number: 20080074564Abstract: In a formation method for forming a fine structure in a workpiece (30) containing an etching control component, using an isotropic etching process, a mask (32, 34) having an opening (36) is applied to the workpiece, and the workpiece is etched with an etching solution (38) to thereby form a recess (40), corresponding to a shape of the opening, in a surface of the workpiece. The etching of the workpiece is stopped due to the etching control component eluted out of the workpiece in the etching solution within the recess during the isotropic etching process.Type: ApplicationFiled: October 30, 2007Publication date: March 27, 2008Applicant: NEC CORPORATIONInventors: Shin-Ichi UEHARA, Yuko Sato, Ken Sumiyoshi, Setsuo Kaneko, Jin Matsushima
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Publication number: 20080057731Abstract: In a formation method for forming a fine structure in a workpiece (30) containing an etching control component, using an isotropic etching process, a mask (32, 34) having an opening (36) is applied to the workpiece, and the workpiece is etched with an etching solution (38) to thereby form a recess (40), corresponding to a shape of the opening, in a surface of the workpiece. The etching of the workpiece is stopped due to the etching control component eluted out of the workpiece in the etching solution within the recess during the isotropic etching process.Type: ApplicationFiled: October 30, 2007Publication date: March 6, 2008Applicant: NEC CORPORATIONInventors: Shinichi UEHARA, Yuko Sato, Ken Sumiyoshi, Setsuo Kaneko, Jin Matsushima
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Publication number: 20080043187Abstract: A liquid crystal display element is disclosed for displaying an image. The liquid crystal display element comprises a liquid crystal display layer in which voltages are applied to a transmissive display unit and a reflective display unit, defined in one pixel, independently of each other, and a light source for irradiating the liquid crystal display layer with light from the back, and a reflection control element disposed between the liquid crystal display layer and light source. The liquid crystal display element is switched between a reflective state and a transmissive state in accordance with a voltage applied to the reflection control element. The liquid crystal display element is switched among a transmissive display mode, a combined reflective/transmissive display mode, and a reflective display mode, by utilizing the transmissive display unit and reflective display unit to display an image independently of each other.Type: ApplicationFiled: July 10, 2007Publication date: February 21, 2008Applicant: NEC LCD Technologies, Ltd.Inventors: Koji Mimura, Ken Sumiyoshi, Jin Matsushima
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Patent number: 7329611Abstract: In a formation method for forming a fine structure in a workpiece containing an etching control component, using an isotropic etching process, a mask having an opening is applied to the workpiece, and the workpiece is etched with an etching solution to thereby form a recess, corresponding to a shape of the opening, in a surface of the workpiece. The etching of the workpiece is stopped due to the etching control component eluted out of the workpiece in the etching solution within the recess during the isotropic etching process.Type: GrantFiled: April 10, 2003Date of Patent: February 12, 2008Assignee: NEC CorporationInventors: Shinichi Uehara, Yuko Sato, Ken Sumiyoshi, Setsuo Kaneko, Jin Matsushima
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Publication number: 20080018840Abstract: To improve a patterning accuracy of pixel electrodes and common electrodes. The liquid crystal display device includes a reflective display area and a transmissive display area within a pixel that is configured with a pair of opposing substrates and a liquid crystal layer provided between the substrates. The reflective display area achieves display by reflection of light, and the transmissive display area achieves display by transmission of light. A laminated body including a reflective plate, an insulating layer, and a metal electrode for rotating liquid crystal molecules of the liquid crystal layer within a surface thereof is provided within the reflective display area.Type: ApplicationFiled: September 25, 2007Publication date: January 24, 2008Applicants: NEC CORPORATION, NEC LCD TECHNOLOGIES, LTD.Inventors: Shinichi UEHARA, Jin Matsushima, Ken Sumiyoshi
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Publication number: 20080018834Abstract: In the liquid crystal display device of the present invention, a circular polarizer is provided to each of a pair of substrates that hold a liquid crystal layer, wherein the circular polarizer on the display surface side is composed of a polarizer, ?/2 plate in which Rth>0, and a ?/4 plate in which Rth<0; and the circular polarizer on the backlight side is composed of a polarizer, a ?/2 plate in which Rth<0, and a ?/4 plate in which Rth>0. Rth is a retardation in the thickness direction of a ?/2 plate or a ?/4 plate. A reduction is achieved in the absolute value of the sum of the Rth between the ?/2 plate for which Rth>0 and the ?/2 plate for which Rth<0, and in the absolute value of the sum of the Rth between the ?/4 plate for which Rth<0 and the ?/4 plate for which Rth>0.Type: ApplicationFiled: July 18, 2007Publication date: January 24, 2008Applicants: NEC CORPORATION, NEC LCD TECHNOLOGIES, LTD.Inventors: Jin MATSUSHIMA, Ken Sumiyoshi, Shin-ichi Uehara