Abstract: An active-matrix addressing substrate improves the degradation of initial alignment of liquid-crystal molecules caused by the steps or level differences due to the pixel electrodes and/or the common electrode. The pixel electrodes are formed on or over the first insulating layer and the common electrode is formed on the second or third insulating layer. The second insulating layer has steps or level differences due to the pixel electrodes in their vicinities. The second insulating layer is made of a dielectric material having fluidity prior to hardening, e.g., an acrylic resin. The steps of the second insulating layer are relaxed, resulting in the gently sloping steps. The steps of an overlying alignment layer due to the common electrode slope gently as well. The thickness of the pixel electrodes, the thickness and inclination angle of the second insulating layer, and the thicknesses of the pixel and common electrodes are defined.
Abstract: An active matrix liquid crystal display device operates such that the polarity of a voltage on a common electrode 30 is inverted by row or by frame. A charge collection/resupply circuit includes a switch connected between the common electrode and a common voltage output buffer, a charge collection capacitor, and a switch connected between a connection point of the common electrode and the switch and the charge collection capacitor. The switch control unit is configured to operate such that immediately before a polarity of a common voltage VCOM10 is inverted, the switch 11 is turned off and then the switch 12 is turned on, and further, after inversion of the polarity of the common voltage VCOM, the switch is turned off and then the switch is turned on.
Abstract: There is provided a liquid crystal display device including a display screen comprised of a plurality of areas in each of which a pixel pattern is formed, wherein any two areas located adjacent to each other, among the areas, have at least two stitches therebetween.
Abstract: A plurality of interconnected light guide plates has a display panel disposed on a light radiating surface or each. A first movable hinge portion joint both first ends of a pair of the light guide plates for holding the light guide plates for permitting rotational movement. Second movable hinge portions join second ends of the light guide plates and stabilizing supports for permitting rotational movement between the light guide plates and the stabilizing supports. A light source unit is disposed in the first movable hinge portion to illuminating the display panels through the light guide plates.
Abstract: A liquid crystal display device includes a first substrate including a thin film transistor, a data line, a pixel electrode, and a common electrode, a second substrate, and liquid crystal sandwiched between the first and second substrates, wherein an image signal is applied to the thin film transistor through the data line to generate an electric field between the pixel electrode receiving the image signal and the common electrode such that the liquid crystal is rotated by the electric field in a plane which is in parallel with the first substrate. The first substrate includes an electrically insulating inorganic film covering the data line therewith, a first island-shaped electrically insulating organic film formed on the electrically insulating inorganic film above the data line, and a shield common electrode covering the first island-shaped electrically insulating organic film therewith and overlapping the data line when viewed vertically.
Abstract: 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:
Grant
Filed:
November 8, 2004
Date of Patent:
November 28, 2006
Assignees:
NEC Corporation, NEC LCD Technologies, Ltd.
Abstract: The TFT substrate of an LCD device has an array of pixel electrodes defined by a plurality of signal lines and a plurality of scanning lines. Each terminal of the scanning lines includes a first metallic pattern, a second metallic pattern in contact with the first metallic pattern through a first via hole, and an ITO pattern in contact with the second metallic pattern through a second via hole. The ITO pattern has a width smaller than the width of the first via hole and larger than the second via hole, thereby providing the TFT substrate with a smaller level difference. The smaller level difference prevents the dust generated during a rubbing treatment from attaching onto the TFT substrate.
Abstract: There is disclosed a shift register comprising a bootstrap circuit that outputs a voltage of the supply voltage to the output when the voltage of a first node becomes higher or lower than the supply voltage. The shift register comprises: two or more transistors connected in series to the first node; a device for supplying the voltage to a second node between the transistors such that the voltage between the drains and sources of the transistors becomes below the supply voltage; a first input transistor connected to the first node, and the gate electrode thereof is connected to a first input terminal as well; and an output transistor connected to the output terminal and the clock signal while having the gate electrode connected to the first node, wherein the gate electrode of the output transistor is not opened except for the bootstrap period.
Type:
Application
Filed:
May 22, 2006
Publication date:
November 23, 2006
Applicants:
NEC Corporation, NEC LCD Technologies, Ltd.
Abstract: A plurality of LEDs are arrayed in a single row between the opposing end faces of a pair of first and second light guide plates that are disposed so that the end faces thereof face each other. A reflective sheet is disposed on the lower surfaces of the pair of first and second light guide plates, and a separation plate is disposed so as to cover the upper surfaces of the first and second light guide plates and the gap therebetween. A reflecting body for guiding light emitted upward from the LEDs to the first and second light guide plates is disposed in the area immediately above the LEDs on the lower surface of the separation plate. A diffusion plate is disposed with a fixed gap above the separation plate, and a hollow area is formed between the diffusion plate and the separation plate. Reflectors for causing light emitted from the first and second light guide plates to enter the hollow area are disposed at the end faces of the first and second light guide plates that face the LEDs.
Abstract: To provide a liquid crystal display apparatus exhibiting optimum display performance despite reduction in the number of PR(photolithography) processes, and a method for producing the apparatus. A method for producing a liquid crystal display apparatus having a first substrate including a thin film transistor and a reflector on an insulating substrate. An etching mask is formed on a metal layer formed on the insulating substrate and, using this etching mask, the metal layer is etched to form a constituent portion of the thin film transistor and protrusions. Only the etching mask is caused to reflow to cover exposed surface portions of the constituent portion of the thin film transistor and protrusions and near-by surface portions of the insulating substrate with the etching mask as the insulating substrate is partially exposed. Using the etching mask, recesses are formed in an exposed area of the insulating substrate. A reflector is formed on the protrusions and recesses.
Abstract: 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:
Application
Filed:
July 21, 2006
Publication date:
November 16, 2006
Applicants:
NEC CORPORATION, NEC LCD TECHNOLOGIES, LTD.
Abstract: A part where a wiring is disconnected is repaired by the laser CVD method while active matrix substrates for liquid crystal display devices and organic electroluminescence display devices are being manufactured. By the laser CVD method, a conductive film is selectively formed in the part where the wiring is disconnected. Thereafter, laser light is irradiated on at least a surrounding area of the conductive film, and thus conductive fine particles remaining in the surrounding area of the conductive film are removed therefrom. As a result, a leak current and parasitic capacity can be inhibited from occurring between the part where the disconnection has been repaired and another wiring.
Abstract: A liquid crystal display is constituted with a liquid crystal panel holding a liquid crystal layer with an active matrix substrate and a counter substrate, and a backlight unit for lighting the liquid crystal panel. A variable resistor for flickering adjustment is mounted in direct, or an FPC connecting and fixing. The variable resistor is mounted with the pressure-welding to a circuit region where a drive circuit and a voltage generating circuit are mounted in the periphery of the active matrix substrate.
Abstract: A vertical diode formed by stacking semiconductor layers includes (1) a lower electrode whose surface is plasma-treated in a gas containing an element which becomes a P-type or N-type conductivity type, and (2) a non-doped semiconductor layer provided on the lower electrode. The P-type or N-type semiconductor area is formed in a contact surface of the non-doped semiconductor layer in contact with the plasma-treated surface of the lower electrode.
Abstract: Disclosed is a panel assembling process concerning a suitable pattern of seal material interposed between facing substrates which is designed for adopting a liquid crystal injection method. The seal material has two groups. The first group is formed to provide an internal space to be filled with the liquid crystal for display area. The second group is formed around the first group to reinforce it during a panel cutting process. The second group as reinforcing members is arranged such that air within the internal space can be easily discharged via a short air outlet route between a peripheral end of the panel and an injection inlet formed in the first group as a seal member. Particularly, an air outlet forming member connected to an injection inlet of the seal member is elongated to the peripheral end of the panel, and an air outlet auxiliary member constituting an air outlet is formed within the air outlet forming member to prevent deformation of the air outlet.
Abstract: A reflector is incorporated in a liquid crystal display panel for directing light to an optical path from a lamp to a liquid crystal panel, and a high voltage line is directly connected to an electrode of the lamp, but a low voltage line is connected through a conductive pattern formed on the reflector to the other electrode of the lamp, wherein the conductive pattern is formed from a layer of conductive filler printed on the reflector through thermosetting so that the conductive pattern is thick enough to withstand thermal stress without enlargement of the liquid crystal display unit.
Abstract: There is provided a liquid crystal display device including a display screen comprised of a plurality of areas in each of which a pixel pattern is formed, wherein any two areas located adjacent to each other, among the areas, have at least two stitches therebetween.
Abstract: A liquid crystal display (LCD) comprises a plurality of gate lines, a plurality of data lines, and switching elements each disposed in the proximity of one of intersections between the plurality of gate lines and the plurality of data lines. The LCD further comprises a plurality of pixel electrodes disposed over the gate lines and the data lines via an interlayer insulating film, wherein, when viewed from upside, that is, from the side of a gap between adjacent pixel electrodes toward the side of the gate line, the gap between adjacent pixel electrodes at least partially overlaps with the gate line, and a plurality of control electrodes each disposed under the gap between adjacent pixel electrodes and over the gate line, wherein, when viewed from upside, the control electrode covers the gate line.
Type:
Grant
Filed:
February 28, 2002
Date of Patent:
November 14, 2006
Assignees:
NEC Corporation, NEC LCD Technologies Ltd.
Abstract: In a peripheral region of an active matrix substrate, disposed is a wiring pattern of control signal wirings or power supply wirings for drive ICs mounted. The wiring pattern includes a plurality of wirings. In addition, a transfer pad is provided, which supplies a common potential to a counter electrode of a counter substrate. Moreover, a common voltage wiring connected to the transfer pad is provided. Furthermore, between the plurality of wirings and the common voltage wiring, a plurality of protective transistors are connected.
Abstract: A display portion is divided by scan lines and signal lines into sections where pixels are provided. Contact holes each for connecting common wiring and a common electrode together are not formed for all the pixels, but decimated so as to be arranged in zigzags.