Patents Assigned to NEC LCD Technologies
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Patent number: 7920277Abstract: A laser irradiation process includes: scanning a substrate with laser having a predetermined lasing frequency at different irradiation intensities to form a plurality of first irradiation areas corresponding to the irradiation intensities; illuminating the first irradiation areas to reflected light receive from the first irradiation areas; determining microcrystallization intensity based on the received reflected light; and determining irradiation intensity based on the thus determined microcrystallization intensity. The laser irradiation process uses the irradiation intensity for irradiating a polycrystalline film in a product semiconductor device.Type: GrantFiled: April 2, 2010Date of Patent: April 5, 2011Assignees: NEC Corporation, NEC LCD Technologies, Ltd.Inventors: Mitsuru Nakata, Hirofumi Shimamoto, Hiroshi Kanoh
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Publication number: 20110076418Abstract: A method of fabricating a liquid crystal display device, includes applying an alignment film to a substrate surface, provisionally drying the alignment film, baking the alignment film; rubbing; and rubbing washing, which are performed in this sequence, wherein, in applying the alignment film, the alignment film is formed so as to cover at least a display region, and a portion of the alignment film which extends in a region outside the display region is imparted with an adsorptive property by modification during a process from the provisional drying to the rubbing washing.Type: ApplicationFiled: November 29, 2010Publication date: March 31, 2011Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Toshihiko Motomatsu, Mitsuhiro Sugimoto
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Publication number: 20110074377Abstract: To provide a time constant circuit and the like capable of acquiring a characteristic of an output voltage that attenuates gradually after attenuating steeply, compared to a characteristic that attenuates monotonously. The time constant circuit includes: a series/parallel circuit formed by serially connecting a plurality of parallel circuits each formed with a resistance element and a capacitance element between a first terminal and a second terminal; and a voltage-dividing resistance element connected between a third terminal connected to the second terminal and a fourth terminal. A first parallel circuit is formed with a first resistance element and a first capacitance element, a second parallel circuit with a second resistance element and a second capacitance element, and an n-th parallel circuit with an n-th resistance element and an n-th capacitance element. Note that ānā is the number of the parallel circuits and it is an integer of 2 or larger.Type: ApplicationFiled: September 27, 2010Publication date: March 31, 2011Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Kouichi OOGA
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Patent number: 7916241Abstract: An optical element manufacturing method according to the present invention includes: disposing a mask on a transparent photosensitive resin; patterning said transparent resin by applying an exposure light to said transparent photosensitive resin through said mask to form a transparent layer; forming a light absorbing layer by filling a gap in the transparent layer with a black curable resin; and illuminating a mask surface of the mask with the exposure light at an angle.Type: GrantFiled: October 3, 2007Date of Patent: March 29, 2011Assignee: NEC LCD Technologies, Ltd.Inventors: Koji Mimura, Ken Sumiyoshi
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Patent number: 7916223Abstract: A LCD device includes first and second LCD panels stacked one on another. Each of the first and second LCD panels includes a pair of transparent substrates, a liquid crystal layer sandwiched therebetween, and a pair of polarizing films sandwiching therebetween the pair of transparent substrates. A light diffusion layer having light diffusion function is interposed between the first LCD panel and the second LCD panel. The light diffusion layer reduces the intensity of the light passed by the first LCD panel, thereby alleviating the periodicity of the arrangement of dark areas and bright areas to alleviate the moire caused by light interference.Type: GrantFiled: April 17, 2007Date of Patent: March 29, 2011Assignee: NEC LCD Technologies, Ltd.Inventors: Yoshiro Kitagawa, Hidenori Ikeno, Shinichi Uehara, Takashi Yatsushiro
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Patent number: 7916265Abstract: Within a reflective display section R, a part of a light that reaches a reflective electrode through a color filter exits to the outside through slits and a part of a light that reaches the reflective electrode through the slits exits to the outside through the color filter. In addition, a light reaching the reflective electrode through the color filter and exiting to the outside through the color filter, and a light having no opportunity to pass through the slits also can be observed. Therefore, a mean film thickness of color filter through which all lights pass during the time in which they travel the associated distance after they are inputted to the inside until they are outputted to the outside becomes nearly equal to that could be observed in the transmissive section T.Type: GrantFiled: September 23, 2010Date of Patent: March 29, 2011Assignees: NEC Corporation, NEC LCD Technologies, Ltd.Inventors: Hidenori Ikeno, Eriko Fujimaki
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Publication number: 20110068343Abstract: To achieve TFT having a high light-resistance characteristic with a suppressed light leak current at low cost by simplifying the manufacturing processes. The TFT basically includes: a light-shielding film formed on a glass substrate that serves as an insulating substrate; an insulating film formed on the light-shielding film; a semiconductor film formed on the insulating film; and a gate insulating film formed on the semiconductor film. Each layer of a laminate that is configured with three layers of the light-shielding film, the insulating film, and the semiconductor film is patterned simultaneously. Further, each layer of the laminate is configured with silicon or a material containing silicon.Type: ApplicationFiled: November 26, 2010Publication date: March 24, 2011Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Hiroshi TANABE
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Patent number: 7907231Abstract: Disclosed is a liquid crystal display apparatus, including: a liquid crystal display panel; a polarizing plate which is processed to be conductive and is attached to a surface of the liquid crystal display panel; and a conductive frame, wherein the polarizing plate includes a projecting area which projects outward from the edge of the liquid crystal display panel, and wherein the conductive frame presses the projecting area of the polarizing plate in order to ground the polarizing plate. A method for grounding a liquid crystal display apparatus is also disclosed.Type: GrantFiled: September 10, 2009Date of Patent: March 15, 2011Assignee: NEC LCD Technologies, Ltd.Inventor: Akihide Sato
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Patent number: 7903226Abstract: Disclosed are a liquid crystal display device 10 and a method of making such liquid crystal display device that improves display quality by providing heat dissipation pattern 4 for effectively dissipating heat generated by the driver ICs 2. The heat dissipation pattern 4 is formed on a glass substrate of a liquid crystal panel 1 along one side thereof so as to minimize non-uniform thermal distribution on the liquid crystal panel 1 at locations adjacent to and distant from the driver ICs 2.Type: GrantFiled: January 16, 2007Date of Patent: March 8, 2011Assignee: NEC LCD Technologies, Ltd.Inventor: Kazuyuki Yuge
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Publication number: 20110051068Abstract: A connecting structure of the present invention includes a first substrate, a second substrate on which the first substrate is laminated, and a sheet like connection body having one end connected to one principal surface of the first substrate and another end connected to one principal surface of the second substrate, wherein a lengthwise direction of the sheet like connection body is parallel to a perimeter part of the first substrate, and the sheet like connection body has a slit part extending from one of end portions thereof to a part thereof along the lengthwise direction, and has a first end and a second end divided by the slit part at one of end portions, the first end is connected to a principal surface of the first substrate in vicinity of a peripheral part of the first substrate, and the second end is connected to a principal surface of the second substrate in vicinity of a peripheral part of the first substrate.Type: ApplicationFiled: August 24, 2010Publication date: March 3, 2011Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: YOUICHIROU KAMON, HIROSHI HAGA, TETSUROH ASAKURA
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Publication number: 20110051063Abstract: A manufacturing method of the present invention is a manufacturing method of a display device with a functional film that is adhered to a principal plane of a display panel provided with a display part. A first resin layer is formed outside the display part on the principal plane to surround the display part, a communication part which allows an inner area surrounded by the first resin layer and an outer area outside of the first resin layer to communicate with each other in an in-plane direction of the principal plane is formed, the inner area is coated with a second resin, the functional film is superimposed on the principal plane, and the second resin is pressed and spread throughout the inner area and the communication part by pressing the functional film.Type: ApplicationFiled: August 31, 2010Publication date: March 3, 2011Applicant: NEC LCD TECHNOLOGIES, LTDInventor: Makoto MORI
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Publication number: 20110050317Abstract: A bootstrap circuit comprises: a first transistor connecting a first power supply with an output node; and a second transistor applying a first input signal to a gate node of the first transistor and having a conductivity type identical to that of the first transistor. A second input signal obtained by inverting a level of the first input signal, delaying the inverted signal, and adding a direct current bias to the delayed signal is inputted to a gate node of the second transistor.Type: ApplicationFiled: September 1, 2010Publication date: March 3, 2011Applicant: NEC LCD Technologies, Ltd.Inventor: Yoshihiro NONAKA
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Publication number: 20110043512Abstract: The degree of an influence from wiring crosstalk between signal lines of a data signal transmission line (video signal line) is decided on the basis of an input signal generated in display controlling unit (a timing controller) at a predetermined timing (at each frame period, at each clock pulse period, or at each horizontal period) and, based on a result of the decision, the voltage amplitude of a data signal is adjusted so that it may exceed an input amplitude specification value for data line driving circuits (data drivers) by a predetermined value.Type: ApplicationFiled: August 24, 2010Publication date: February 24, 2011Applicant: NEC LCD Technologies, Ltd.Inventor: Kouichi OOGA
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Publication number: 20110044028Abstract: A backlight device includes a chassis which is box in shape and having a bottom part and four side walls, a light source arranged on the bottom part of the chassis, a diffuser panel supported by a top end surface of each of the side walls of the chassis, and an optical sheet arranged on the diffuser panel, wherein the top end surface of each of the side walls is downward sloping so that height becomes continuously low toward inside the chassis.Type: ApplicationFiled: August 20, 2010Publication date: February 24, 2011Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Hirofumi HABARA
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Patent number: 7893392Abstract: A light-receiving circuit is provided which is capable of reducing component counts, improving light-receiving accuracy and increasing a dynamic range of an amount of received light. The light-receiving circuit includes a photodiode made of thin films formed on an insulating substrate, a transferring TFT (Thin Film Transistor) to transfer charges induced by the photodiode according to input light, a charge accumulating capacitor to accumulate transferred charges, and a reading TFT to transfer charges accumulated in the charge accumulating capacitor to a charge reading signal line.Type: GrantFiled: October 27, 2006Date of Patent: February 22, 2011Assignee: NEC LCD Technologies, Ltd.Inventor: Mitsuasa Takahashi
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Patent number: 7894028Abstract: A liquid crystal display device includes a first substrate, a second substrate, and a liquid crystal layer sandwiched between the first and second substrates. The first substrate includes first to N-th 1st retardation plates arranged on the first transparent substrate, and the second substrate includes first to N-th 2nd retardation plates arranged on the second transparent substrate. Assuming that a retardation plate among the first to N-th 1st retardation plates has an optical axis arranged at a first angle relative to a reference direction and a retardation plate among the first to N-th 2nd retardation plates, corresponding to the retardation plate among the first to N-th 1st retardation plates, has an optical axis arranged at a second angle relative to the reference direction, the first and second angles are different from each other by about 90 degrees.Type: GrantFiled: April 26, 2002Date of Patent: February 22, 2011Assignee: NEC LCD TechnologiesInventors: Hidenori Ikeno, Michiaki Sakamoto, Takahiko Watanabe, Teruaki Suzuki
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Patent number: 7889832Abstract: Disclosed is a shift register which includes first transistor connected between a first clock signal terminal and an output terminal, a second transistor with a gate connected to an input terminal and a source connected to a gate of the first transistor, a third transistor with a gate connected to a second clock signal terminal, an inverter with an input connected to the input terminal, a fourth transistor cascode connected to the third transistor with a gate connected to an output of the inverter, a fifth transistor connected between the gate of the first transistor and a power supply terminal, a sixth transistor connected between the fourth transistor and the power supply terminal with a gate connected to the input terminal, and a seventh transistor connected between the output terminal and the power supply terminal, the fifth and seventh transistors having gates connected in common to a connection node of the fourth and the sixth transistors.Type: GrantFiled: May 22, 2009Date of Patent: February 15, 2011Assignee: NEC LCD Technologies, Ltd.Inventors: Tomohiko Otose, Masamichi Shimoda
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Publication number: 20110032421Abstract: To provide a timing controller and the like, which can display an image properly regardless of the scanning direction even when an image display device is formed by using signal-line driving ICs having residual output terminals that are not connected to the signal lines. The timing controller includes: a reset signal storage section which stores a plurality of reset signals including a normal reset signal and a specific reset signal; a reset signal setting section which sets one of the plurality of reset signals stored in the reset signal storage section for each of the plurality of ports in accordance with a signal from the outside; and a reset signal synthesizing section which synthesizes the reset signals set by the reset signal setting section and the video data, and simultaneously outputs acquired data to the plurality of ports, respectively.Type: ApplicationFiled: August 4, 2010Publication date: February 10, 2011Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Atsushi KOTA
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Patent number: 7884360Abstract: A thin-film device includes a first electrical insulator, an oxide-semiconductor film formed on the first electrical insulator, and a second electrical insulator formed on the oxide-semiconductor film, the oxide-semiconductor film defining an active layer. The oxide-semiconductor film is comprised of a first interface layer located at an interface with the first electrical insulating insulator, a second interface layer located at an interface with the second electrical insulator, and a bulk layer other than the first and second interface layers. A density of oxygen holes in at least one of the first and second interlayer layers is smaller than a density of oxygen holes in the bulk layer.Type: GrantFiled: August 6, 2007Date of Patent: February 8, 2011Assignee: NEC LCD Technologies, Ltd.Inventors: Kazushige Takechi, Mitsuru Nakata
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Publication number: 20110027460Abstract: A method for manufacturing a transflective type LCD having a first substrate provided thereon with a plurality of scanning lines and a plurality of signal lines which are substantially perpendicular to each other and a switching element arranged near each of intersections between said scanning lines and said signal lines, includes forming a reflection region having a reflection electrode film and a transmission region having a transparent electrode film in each pixel surrounded by said scanning lines and said signal lines, a liquid crystal being sandwiched at a gap between said first substrate and a second substrate which is arranged opposite to said first substrate, and forming an organic film having irregularities thereon below said reflection electrode film and said transparent electrode film to substantially the same film thickness.Type: ApplicationFiled: October 15, 2010Publication date: February 3, 2011Applicant: NEC LCD Technologies, Ltd.Inventors: Michiaki Sakamoto, Satoshi Ihida, Hidenori Ikeno, Masaki Shinohara, Shigeru Kimura, Kenji Morio, Kazurou Saeki