Patents Assigned to NEC LCD Technologies
-
Patent number: 7515131Abstract: 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: GrantFiled: November 18, 2005Date of Patent: April 7, 2009Assignee: NEC LCD Technologies, Ltd.Inventor: Hiroshi Takeda
-
Patent number: 7514303Abstract: A liquid crystal display device includes (a) a first substrate, (b) a second substrate spaced away from and facing the first substrate, (c) a liquid crystal layer sandwiched between the first and second substrates, (d) a transistor formed on the first substrate, (e) a wiring layer formed on the first substrate and electrically connected to the transistor, (f) a reflection electrode formed on the first substrate, an external incident light being reflected at the reflection electrode towards a viewer, and (g) a compensation layer formed directly on the wiring layer. The reflection electrode does not cover the wiring layer therewith, and the compensation layer has almost the same height as a height of the reflection electrode, the height being measured from a surface of the first substrate.Type: GrantFiled: December 11, 2006Date of Patent: April 7, 2009Assignee: NEC LCD Technologies, Ltd.Inventors: Yuichi Yamaguchi, Hironori Kikkawa, Hiroshi Kanoh, Teruaki Suzuki, Hidenori Ikeno
-
Patent number: 7511301Abstract: To provide an active matrix liquid crystal display unit in which a wiring break at the intersection of drain wiring and gate wiring is prevented with reliability. One or more recesses extending along drain wiring and having a depth equal to or greater than the width of the drain wiring are formed in at least one side of gate wiring at an area near an intersection of the gate wiring and the drain wiring. Furthermore, the gate wiring is composed of two layers of Mo and Al, for example, and the side faces of the gate wiring are tapered. The recesses having a sufficient depth formed in the gate wiring at the area near the intersection with the drain wiring adequately elongate the etchant penetration path.Type: GrantFiled: December 1, 2004Date of Patent: March 31, 2009Assignee: NEC LCD Technologies, Ltd.Inventor: Shigeru Kimura
-
Publication number: 20090080148Abstract: A device includes a module, a flexible unit fixed on a fixing part of which relative position to a position of the module is variable, a casing covering the module and the flexible unit, and a protector which is made of material having less scratch hardness than material of the casing. The protector has a fixing part, a protruding part and a protecting part. The fixing part, which is a part of a first surface of the protector, is fixed on the casing. The protruding part, which is a part of the protector, protrudes from an edge of the casing. The protecting part, which is a part of a second surface behind the first surface excluding the protruding part, contacts with the flexible unit.Type: ApplicationFiled: September 18, 2008Publication date: March 26, 2009Applicant: NEC LCD TECHNOLOGIES, LTDInventor: Hideaki SUGAWARA
-
Publication number: 20090079918Abstract: A liquid crystal display device including a first substrate, a second substrate facing and spaced away from the first substrate, a liquid crystal layer sandwiched between the first and second substrates, a switching device formed on the first substrate, a first electrically insulating film randomly patterned on the first substrate, a second electrically insulating film covering the first electrically insulating film therewith, and having a wavy surface, and a reflection electrode formed on the second electrically insulating film, and electrically connected to an electrode of the switching device, wherein a light passing through the second substrate and the liquid crystal layer is reflected at the reflection electrode, and the second electrically insulating film extends outwardly from the first electrically insulating film by a certain length at an end of a display region in which images are to be displayed, such that a step formed by the first and second electrically insulating films in the vicinity of the enType: ApplicationFiled: March 19, 2008Publication date: March 26, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Hironori Kikkawa, Michiaki Sakamoto, Yuichi Yamaguchi, Hidenori Ikeno, Fumihiko Matsuno
-
Publication number: 20090079919Abstract: A liquid crystal display device comprises a plurality of pixels arrayed in a first direction and a second direction, each of the pixels having a reflective area in at least a portion thereof. The reflective area comprises a surface-irregularity film that is a film having a plurality of surface irregularities, a light reflecting film disposed as an upper layer over the surface-irregularity film, and an electrode group disposed as an upper layer over the light reflecting film. The electrode group in each of the pixels that are arrayed in at least the first direction comprises at least two types of electrode patterns having different layouts.Type: ApplicationFiled: September 25, 2008Publication date: March 26, 2009Applicant: NEC LCD Technologies, Ltd.Inventors: Shinya NIIOKA, Ken Sumiyoshi
-
Publication number: 20090079921Abstract: To suppress light leakage at the time of dark state, and to provide a liquid crystal display device whose electrodes in the reflection areas can be formed with high precision. The liquid crystal display device has a reflection area within a pixel unit by corresponding at least to a reflection plate forming part, and the reflection area is driven with a lateral electric field mode and normally-white. A driving electrode for forming an electric field to a liquid crystal layer of the reflection area is formed on the reflection plate via an insulating film by using a non-transparent electric conductor.Type: ApplicationFiled: September 24, 2008Publication date: March 26, 2009Applicant: NEC LCD Technologies, Ltd.Inventors: Kenichi Mori, Michiaki Sakamoto, Ken Sumiyoshi, Hiroshi Nagai, Kenichirou Naka, Masayuki Jumonji, Hiroshi Tanabe
-
Publication number: 20090073364Abstract: A liquid crystal display device improves the adhesion property between the organic transparent insulating film and the transparent electrodes formed thereon and the transmittance of the insulating film in the non-electrode regions, thereby increasing the display brightness while preventing the defective patterning of the electrodes. An organic transparent insulating film is formed on or over a transparent substrate. The organic transparent insulating film includes a reformed layer in its surface. Transparent electrodes are formed on the organic transparent insulating film to be in contact with the reformed layer. In electrode regions where the transparent electrodes are present, the reformed layer has a first thickness. In non-electrode regions where the transparent electrodes are not present, the reformed layer is not present, or a remainder of the reformed layer is present in such a way as to have a thickness less than the first thickness.Type: ApplicationFiled: July 8, 2008Publication date: March 19, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Fumihiko Matsuno
-
Publication number: 20090073346Abstract: The backlight includes a first light guide plate which emits a light inputted from an end face thereof from a main surface thereof, a second light guide plate which includes an end face for an incoming light and an end face for an emitting light, and which is arranged behind the first light guide plate, a reflection sheet which is arranged between the first light guide plate and the second light guide plate, a chassis which houses the first light guide plate, the second light guide plate and the reflection sheet, and a rear cover which fixes the first light guide plate, the second light guide plate and the reflection sheet with the chassis. The first light guide plate and the second light guide plate are positioned in a thickness direction thereof.Type: ApplicationFiled: September 10, 2008Publication date: March 19, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Kazuaki MIKAMI
-
Publication number: 20090073357Abstract: In a color filter substrate without an overcoat layer, a planarization pattern layer is further provided so as to cover at least an outer step portion of a frame-shaped resin black matrix.Type: ApplicationFiled: September 11, 2008Publication date: March 19, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Sounosuke TAKAHASHI, Yoshikazu Sakaguchi
-
Patent number: 7505105Abstract: An in-plane switching liquid crystal display device is designed in such a way that an angle defined by the lengthwise direction of a common electrode and a pixel electrode and a rubbing direction of an alignment layer is set to 10 to 20°, a cell gap d is set to 2.7 ?m or smaller, the dielectric anisotropy ?? of a liquid crystal constituting a liquid crystal layer is set to 8 to 20, a white voltage Vwhite to be applied to the pixel electrode when displaying white is set to 4 to 7 V, and the white voltage Vwhite (V), the dielectric anisotropy ?? of the liquid crystal, the cell gap d (?m) and an interval L (?m) between the common electrode and the pixel electrode satisfy the following expression. 11.8 > V white d - 0.6 × L 0.5 × ? ? ? ? - 0.5 > 9.Type: GrantFiled: November 5, 2004Date of Patent: March 17, 2009Assignee: NEC LCD Technologies, Ltd.Inventors: Daisuke Inoue, Shinichi Nishida
-
Publication number: 20090059153Abstract: A display device includes a first substrate having a group of terminal electrodes on one side thereof, at least one of the terminal electrodes forming a branched electrode with an isolation region extending along an elongating direction of each the terminal electrode and a second substrate opposing the first substrate such that the terminal electrodes are exposed from an overlapping area of the first substrate and the second substrate.Type: ApplicationFiled: August 29, 2008Publication date: March 5, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Kyounei Yasuda, Futoshi Nakanishi
-
Publication number: 20090058306Abstract: The light-guide plate has an extended portion. The extended portion has a recess formed in a thickness direction, and the optical sensor is arranged within the recess.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Hideki ITAYA
-
Publication number: 20090059107Abstract: A transflective LCD unit includes an array of pixels each including a reflective area and a transmissive area. The LC layer has an effective retardation of ?/4 in the reflective area, and an effective retardation of ?/2 in the transmissive area. A retardation film disposed in the reflective area provides a retardation of ?/2 to the light passed thereby. An angle of ? between the optical axis of the retardation film and the polarized direction of the light is in a range of 0 degree<?<22.5 degrees.Type: ApplicationFiled: August 29, 2008Publication date: March 5, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Hiroshi NAGAI, Michiaki SAKAMOTO, Kenichi MORI, Kenichirou NAKA
-
Patent number: 7499119Abstract: A LCD device prevents corrosion of the transparent conductive layers and contact resistance increase without arising the step coverage degradation due to the thickness increase of the interconnection layer, the step coverage degradation due to the formation of undercut portions, and productivity reduction and fabrication cost increase. A first interconnection line comprising a patterned Al or Al alloy layer is disposed on or over an insulating plate. A first insulating layer is formed to cover the first interconnection line to have a contact hole exposing a part of the first interconnection line. A first conductive material made of a plated metal is in contact with the exposed part of the first interconnection line in the contact hole. A first transparent conductive layer is in contact with the first conductive material. The first transparent conductive layer is electrically connected to the first interconnection line by way of the first conductive material.Type: GrantFiled: October 18, 2006Date of Patent: March 3, 2009Assignee: NEC LCD Technologies, Ltd.Inventor: Kyounei Yasuda
-
Publication number: 20090046232Abstract: A liquid crystal display panel for displaying an image by controlling an orientation direction of a liquid crystal mixture with respect to each pixel, includes a first common electrode which is formed on a first substrate; a second common electrode which is formed on a second substrate and includes a predetermined opening; and a pixel electrode which is formed on the second substrate, wherein the first substrate faces the second substrate so that the liquid crystal mixture with positive dielectric anisotropy is sandwiched between the first common electrode and the second common electrode, and wherein the orientation direction of the liquid crystal mixture changes mainly in a face parallel to the substrate according to an electric field generated from electric potential of the first common electrode, the second common electrode, and the pixel electrode.Type: ApplicationFiled: August 18, 2008Publication date: February 19, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Hiroaki MATSUYAMA, Takahiko Watanabe
-
Patent number: 7492431Abstract: In an active matrix liquid crystal display device, a drain and source of a TFT element for controlling power supply to a pixel electrode, are arranged so that an alignment direction of liquid crystal molecules over the source and drain does not change, thereby preventing formation of ghost images in the display. In one embodiment, an electric field generated between the source and drain is parallel to an initial non-zero alignment angle of the molecules.Type: GrantFiled: December 2, 2005Date of Patent: February 17, 2009Assignee: NEC LCD Technologies, Ltd.Inventors: Kimikazu Matsumoto, Shinichi Nishida
-
Patent number: 7492434Abstract: A liquid crystal display (LCD) device includes a LCD panel and a flexible wiring member coupled together by an anisotropic-conductive adhesive film (ACF). The ACF includes insulating resin and a plurality of conductive particles dispersed therein and each having an insulating film on a conductive body. The insulating film is broken by the thermal compression of the ACF during manufacture of the LCD device, thereby allowing terminals of the LCD panel and terminals of the flexible wiring member to be electrically coupled together.Type: GrantFiled: August 3, 2006Date of Patent: February 17, 2009Assignee: NEC LCD Technologies, LTD.Inventors: Kiyofumi Kudo, Futoshi Nakanishi
-
Patent number: 7491079Abstract: A connector includes i) a plug including a pair of connecting members configured to connect the plug to a socket, a through-hole formed at a portion between the pair of connecting members, and plug contacts arranged on outer side faces of the respective connecting members, ii) a socket including a recess portion configured to receive the plug, and socket contacts arranged on inner side faces of the recess portion, and iii) a locking member configured to lock the plug into the socket, expanding the pair of the connecting members outward so as to contact each of the outer side faces of the connecting members onto a corresponding one of the inner side faces of the recess portion by inserting between the pair of the connecting members via the through-hole, and thereby bringing the plug contacts into contact with the socket contacts.Type: GrantFiled: July 6, 2007Date of Patent: February 17, 2009Assignee: NEC LCD Technologies, LtdInventor: Toshio Uchida
-
Publication number: 20090040192Abstract: A combination flat-panel touch sensor/display device includes a display device substrate on which signal lines, scanning lines and storage capacitance lines for applying electrical signals to liquid crystal are formed. A surface of the flat-panel display device corresponding to a display area has a transparent conductive film serving as an impedance surface. The device further includes current detecting circuits for detecting currents that flow through the impedance surface. In an interval over which the current detecting circuits detect current, at least one of the signal lines, scanning lines and storage capacitance lines is placed at a high impedance. The device reduces thickness without decline in display characteristics.Type: ApplicationFiled: August 4, 2008Publication date: February 12, 2009Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Hiroshi HAGA