Patents Assigned to NEC LCD Technologies
  • Publication number: 20060141789
    Abstract: A method for forming a structure formed by etching which is typified by a contact hole in the semiconductor and a method for manufacturing a display device using the structure. The etching method includes at least, forming an organic mask having a first opening portion and a second opening portion by patterning an organic film which includes either one of an organic film and a film with the addition of organic solvent and is located on a constituent part to be etched, and forming a transformed organic mask by dissolving the organic mask in contact with organic solvent and reflowing.
    Type: Application
    Filed: December 28, 2005
    Publication date: June 29, 2006
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventor: Shusaku Kido
  • Patent number: 7066635
    Abstract: Light is input into an incident surface portion from a fluorescent lamp, and most of the light propagates in repetition directions. Since a length of an emission portion of the fluorescent lamp is shorter than that of the incident surface portion, there are areas to which no light propagates and dark portions generate in the repetition directions of a string of prisms. Since these dark portion generate out of the display area, a display quality is improved.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: June 27, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Fumihiko Fujishiro
  • Patent number: 7067764
    Abstract: Light exposure areas 103 and light masking areas 104 in a sole reticle are arrayed in alternation to one another in both the longitudinal and transverse directions. Substrate is exposed to light by multi-domain light exposure using this reticle so that the respective areas of the reticle exposed to light with respective shots A to B, B to C . . . , N to M are not adjacent to one another in the boundary portions of the reticle shifted for executing the respective shots, thus relaxing the difference in illuminance between the respective shots and the difference in finish of the boundary portions of the shots, such differences becoming imperceptible to human eyes upon displaying liquid crystal display apparatus.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: June 27, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Shinichi Nakata, Takayuki Ishino, Masami Yamashita
  • Patent number: 7064799
    Abstract: A semi-transmissive-type liquid crystal display device is provided which is capable of preventing an electric erosion reaction between a reflective film made of Al (aluminum) or an Al alloy and a transparent electrode film made of ITO or a like (Indium Tin Oxide) and of inhibiting occurrence of a flicker caused by a residual DC (Direct Current) voltage in the reflective film. In the semi-transmissive-type of a liquid crystal display device, a transmissive region to provide light from a backlight source and a reflective region to receive ambient light are placed in a pixel region and a transparent electrode film is formed above a reflective film formed in the reflective region on an active matrix substrate with a second passivation film being interposed between the reflective film and the transparent electrode film.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: June 20, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Mamoru Okamoto, Michiaki Sakamoto, Osamu Sukegawa, Ken-Ichirou Naka, Shin-Ichi Nakata, Masami Yamashita
  • Publication number: 20060125747
    Abstract: An automatic synchronization judging circuit to be used in a liquid crystal display device is provided which is capable of realizing, by a small-scale circuit, a function of correctly judging a synchronizing signal to serve as a reference signal for displaying operations in any case of combinations of synchronizing signals to be input. The automatic synchronization judging circuit includes a counter and a judging device. The counter, when having counted a DE (Data Enable) signal up to a predetermined number being 1 or more, makes a signal output from the counter go high and stops the counting. The judging device generates a judging signal. If the judging signal is high, the driving mode is judged as a “fixed mode” which uses a vertical synchronizing signal and a horizontal synchronizing signal as the reference signal. If the judging signal is low, the driving mode is judged as a “DE mode” which uses the DE (Data Enable) signal as the reference signal.
    Type: Application
    Filed: December 9, 2005
    Publication date: June 15, 2006
    Applicant: NEC LCD TECHNOLOGIES
    Inventors: Hiroshi Takeda, Youji Hirano
  • Publication number: 20060125772
    Abstract: It is a liquid crystal display device which can display simultaneously information which is different in the front and rear sides. It has a single liquid crystal panel, a lighting unit which is arranged at both-sides and comprised with the light source, and a control circuit which carries out drive controlling of these. This control circuit controls lighting on and off the light source of the lighting unit and controls a screen display of the liquid crystal panel, and realize the display which is different to both sides of the liquid crystal panel. Thereby, when the screen of the liquid crystal panel is simultaneously seen from both sides, an independent different image can be recognized visually.
    Type: Application
    Filed: November 18, 2005
    Publication date: June 15, 2006
    Applicant: NEC LCD Technologies, Ltd.
    Inventor: Hiroshi Takeda
  • Publication number: 20060125774
    Abstract: A lighting device of backlight type that transmits light of a plurality of light emitting elements from a display section includes a plurality of driving sections that drive the plurality of light emitting elements; and drive switching section, provided between the plurality of driving sections and the plurality of light emitting elements, for switching the drive of the plurality of light emitting elements alternately at every fixed cycle.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 15, 2006
    Applicant: NEC LCD Technologies, Ltd.
    Inventor: Eitaro Nishigaki
  • Patent number: 7060623
    Abstract: A method of deforming a pattern comprising the steps of: forming, over a substrate, a layered-structure with an upper surface including at least one selected region and at least a re-flow stopper groove, wherein the re-flow stopper groove extends outside the selected region and separate from the selected region; selectively forming at least one pattern on the selected region; and causing a re-flow of the pattern, wherein a part of an outwardly re-flowed pattern is flowed into the re-flow stopper groove, and then an outward re-flow of the pattern is restricted by the re-flow stopper groove extending outside of the pattern, thereby to form a deformed pattern with at least an outside edge part defined by an outside edge of the re-flow stopper groove.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: June 13, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Shusaku Kido
  • Publication number: 20060119773
    Abstract: A transflective liquid crystal display device includes a liquid crystal film and a polarizing plate on a backlight source side. A transflective liquid crystal display device includes an uniaxially anisotropic film (a quarter wave plate) and a polarizing plate on a visual confirmation side. The liquid crystal film has the nematic hybrid orientation, in which a polymeric liquid crystal substance formed in a liquid state is fixed. The optical axis of the anisotropic film is disposed to be orthogonal or substantially orthogonal to that of the liquid crystal film.
    Type: Application
    Filed: November 28, 2005
    Publication date: June 8, 2006
    Applicant: NEC LCD Technologies, Ltd.
    Inventor: Kenichirou Naka
  • Patent number: 7057678
    Abstract: In a liquid crystal display device there are provided a liquid crystal panel, a chassis, a side reflector, an optical sheet, a diffuser, and a bottom reflector. In the side reflector are provided plural lamp support bases in a row in a direction parallel to the surface of the liquid crystal panel. The lamp support bases are arranged so as to hold low pressure-side end portions of lamps respectively. A return substrate extending in the arranged direction of the lamps is mounted to the lamp support bases on the side opposed to the liquid crystal panel. Further, lead wires are drawn out toward the return substrate from low pressure-side end portions of the lamps, then are allowed to pass through the lamp support bases and are connected to the return substrate. With this arrangement, it is possible to narrow a picture frame area.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: June 6, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Hiroshi Ishida, Tsutomu Kanatsu
  • Publication number: 20060115924
    Abstract: A method of deforming a pattern comprising the steps of forming, over a substrate, a layered-structure with an upper surface including at least one selected region and at least a re-flow stopper groove, wherein the re-flow stopper groove extends outside the selected region and separate from the selected region; selectively forming at least one pattern on the selected region; and causing a re-flow of the pattern, wherein a part of an outwardly re-flowed pattern is flowed into the re-flow stopper groove, and then an outward re-flow of the pattern is restricted by the re-flow stopper groove extending outside of the pattern, thereby to form a deformed pattern with at least an outside edge part defined by an outside edge of the re-flow stopper groove.
    Type: Application
    Filed: January 10, 2006
    Publication date: June 1, 2006
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventor: Shusaku Kido
  • Publication number: 20060103789
    Abstract: In a display panel of an active matrix-type liquid crystal display device in an In-Plane Switching mode, a black matrix is formed on the surface of a transparent substrate of a color-filter substrate, the surface being at a side opposed to a TFT substrate. The black matrix is made of a laminated film for which a metal oxide film and a metal film have been alternately laminated in two layers or more. The black matrix has a thickness of 0.2 ?m or less and an OD value of 3 or more. Moreover, an electric-field shielding layer made of an ITO film connected to a common electrode is provided on a data line formed on the TFT substrate, via an insulating film. Furthermore, an impurity is doped in a liquid crystal layer so that resistance thereof becomes 1×1011 through 1×1013?·cm.
    Type: Application
    Filed: November 16, 2005
    Publication date: May 18, 2006
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Sounosuke Takahashi, Yoshikazu Sakaguchi
  • Patent number: 7046321
    Abstract: In order to realize the manufacture of a reflection type liquid crystal display in the same manufacture processes as those of a transmission type liquid crystal display, a photolithography mask capable of forming both a gate electrode 22 and a reflective layer 23, and a photolithography mask capable of forming only the gate electrode 22 are prepared, and by using either one of the masks, the reflection type liquid crystal display in which both the gate electrode 22 and the reflective layer 23 are formed on a transparent insulation substrate 21, and the transmission type liquid crystal display in which only the gate electrode 22 is formed are selectively manufactured.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: May 16, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Hironori Kikkawa, Michiaki Sakamoto
  • Patent number: 7046118
    Abstract: A signal processing circuit board includes a board body, a variable electronic element, and a hole. The variable electronic element is mounted in a mounting side of the board body. The variable electronic element has an operating member to control an output outputted from the variable electronic element in a single side of the variable electronic element. The hole is provided in the board body. The operating member is positioned in the hole such that the operating member points in the other side opposite to the mounting side of the board body.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: May 16, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Yutaka Takeishi
  • Patent number: 7046314
    Abstract: The method of fabricating a liquid crystal display device includes the steps of (a) fabricating a switching device on a substrate, (b) forming an interlayer insulating film on the substrate such that the switching device is covered with the interlayer insulating film, and (c) forming a transparent electrode on the interlayer insulating film, the transparent electrode being electrically connected to the switching device through the interlayer insulating film, the step (c) including (c1) depositing electrically conductive, transparent and amorphous material on the interlayer insulating film, (c2) patterning the material into the transparent electrode, and (c3) turning the transparent electrode into polysilicon by thermal annealing carried out after formation of an alignment film.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: May 16, 2006
    Assignee: NEC LCD Technologies Ltd.
    Inventors: Takasuke Hayase, Keiko Yamada, Masami Yamashita, Shinichi Nakata, Akitoshi Maeda
  • Publication number: 20060098458
    Abstract: A liquid crystal display device includes an LED backlighting unit and a liquid crystal display panel disposed on the backlighting unit. The backlighting unit includes a light source of an array of LEDs and a reflector disposed so as to cover the light source and configured to reflect light emitted from the light source. And a light shielding spacer member is provided between the reflector and the LED light source.
    Type: Application
    Filed: November 3, 2005
    Publication date: May 11, 2006
    Applicant: NEC LCD Technologies, Ltd.
    Inventor: Kazuaki Mikami
  • Publication number: 20060098456
    Abstract: The backlight device used for a liquid crystal display device includes (a) an inverted-prism sheet, (b) a light-guide arranged adjacent to the inverted-prism sheet, (c) a light-reflection sheet arranged adjacent to the light-guide, and (d) a light-source emitting a light into the light-guide. The light-guide is formed on a first surface thereof facing the light-reflection sheet with at least one groove defining a light-reflection surface at which a light provided from the light-source is reflected obliquely towards the inverted-prism sheet.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 11, 2006
    Applicant: NEC LCD TECHNOLOGIES, LTD
    Inventors: Michiaki Sakamoto, Masataka Baba, Hiroshi Hada
  • Publication number: 20060098173
    Abstract: A reflector capable of preventing stain caused from the interference among the beams of light, for reflecting light incident on an LCD module to utilize the light as a light source for display. The reflector includes a plurality of projecting and recessing patterns which are irregularly disposed on the reflector, and each projecting and recessing pattern is disposed corresponding to prescribed polygon shape as a grid, and is repeated in the plane direction of the reflector so that the length of the edge or the distribution of distance between the centers of each projecting and recessing pattern conforms to the Gaussian distribution. The reflector also includes a unit area constituted of the plurality of polygon shapes, so that one edge of the unit area is integral multiple of a unit pixel and substantially 1900 ?m or more, and smaller than or equal to the entire screen of the LCD module.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 11, 2006
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Kenichirou Naka, Michiaki Sakamoto
  • Patent number: 7042534
    Abstract: Light is input into an incident surface portion from a fluorescent lamp, and most of the light propagates in repetition directions. Since a length of an emission portion of the fluorescent lamp is shorter than that of the incident surface portion, there are areas to which no light propagates and dark portions generate in the repetition directions of a string of prisms. Since these dark portion generate out of the display area, a display quality is improved.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: May 9, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Fumihiko Fujishiro
  • Patent number: 7042539
    Abstract: A reflection plate is formed so as to have a wavy surface, and to have uneven distribution of normal line directions of the surface in terms of a specific azimuth angle. The wavy surface is formed due to line-shaped protruding patterns and an insulation film layer. The protruding patterns intersect with one another to form concave portions each having a shape of a closed figure. The protruding patterns are formed by patterning such that they have almost uniform thickness.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: May 9, 2006
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Michiaki Sakamoto, Yuichi Yamaguchi, Hidenori Ikeno, Takahiko Watanabe, Hironori Kikkawa, Fumihiko Matuno