Abstract: In an orientation division type liquid crystal display device for widen a viewing angle of a display pixel of an active matrix type liquid crystal color display device having a COT structure, pixel color layers (6B, 6R, 6G) as color filters and pixel electrodes 3 are formed on a substrate on the side of the pixel electrodes and slopes 13 are provided along four side peripheries of each pixel electrode. Liquid crystal molecules 8 between each pixel electrode of the pixel electrode substrate and a common electrode of an opposing substrate are controlled in orientation direction along the slopes to divide it to a plurality of directions to thereby widen a viewing angle of a pixel display.

Abstract: A method is provided for manufacturing a support frame of a rectangular display panel within a short working time. The method includes a process of taking out L-shaped component members each having convex portions and concave portions arranged alternately at an end portion in a manner that each of the convex portions and concave portions is bilaterally symmetrical, while a shear droop and a burr are formed on an end portion and process of fitting and coupling end portions of L-shaped component members by placing the convex portions and the concave portions in such a manner that the shear droop of each of the convex portions faces the burr of each of the concave portions and the burr of each of the convex portions faces the shear droop of each of the concave portions and that that the convex portions and the concave portions are pushed towards each other and by pressing the convex portions and the concave portions using a pair of metal molds.

Abstract: A liquid crystal display comprises a plurality of components including a panel unit that includes a liquid crystal display (LCD) panel with a display surface, a light conductive plate, and a lamp reflector. A first housing part or housing front has an opening exposing the display surface of the LCD panel. A second housing part or housing rear is complementary to the first housing part. The housing front has at least one horizontal retainer arranged to retain at least one of the components at a desired position within a hypothetical horizontal plane parallel to the display surface of the LCD panel, and a vertical retainer arranged to retain the components together. The housing rear has a load applying portion arranged to load the vertical retainer into firm engagement with the adjacent one of the components when the housing rear and the housing front are coupled to each other.

Abstract: An LCD (Liquid Crystal Display) manufacturing method includes: a step of forming a columnar spacer for maintaining a gap between a TFT (Thin Film Transistor) substrate and a CF (Color Filter) substrate into which a liquid crystal is to be injected; and a subsequent step of performing under-pressure hole sealing processing which determines the gap finally, as applying an under-pressure hole sealing load value of 0.15-0.60 kg/cm2.

Abstract: A liquid crystal display device comprising a start pulse generation circuit which gives the timing for displaying a received image in a fixed position on a liquid crystal display panel, another start pulse generating circuit which gives the timing for displaying the received image in a specified position on the liquid crystal display panel in response to enable signal indicating an effective display data period concerning the received image from the outside, and selectors which select one of these circuits in response to a select signal. The liquid crystal display device according to this present invention has a data enable signal detection circuit which detects the data enable signal and outputs the result to the selectors as the select signal.

Abstract: In a liquid crystal display apparatus including a transparent substrate, a plurality of first bus lines formed on the transparent substrate, a plurality of second bus lines formed on the transparent substrate substantially perpendicular to the first bus lines, a plurality of common electrode lines formed on the transparent substrate in parallel with the first bus lines, and a plurality of pixels each connected to one of the first bus lines, one of the second bus lines and one of the common electrode lines, a plurality of address marks are formed on the transparent substrate and each of the address marks is connected to one of the first bus lines, the second bus lines and the common electrode lines.

Abstract: An in-plane switching mode LCD device includes a shield common electrode having a protrusion protruding from side edges of a drain line, and a pair of light shield films sandwiching therebetween the drain line and having an overlapping portion overlapping the protrusion. The shield common electrode shields the electric field from the drain line, and the light shield films improve the contrast ratio of the LCD device.

Abstract: In a liquid crystal display apparatus, a set of write-in voltages are generated corresponding to a horizontal line signal of an input video frame so that they appear at end points of the column lines of a LCD panel. The row lines of the LCD panel are successively selected and the write-in voltages are supplied from the end points of the column lines to the liquid crystal cells of the selected row line for a variable write-in period. In order to compensate for shades-of-gray differences between the top and bottom of the LCD panel, the write-in period is increasingly varied as a function of the geometric distance from the selected row line to the end points of the column lines. The write-in period may be increasingly variable from a nominal value, or from a less-than-nominal value to the nominal value, or a combination of both.

Abstract: A drive circuit of an LCD is disclosed, by which no image signal having a voltage level over the dynamic range of the video amplifier, and thus erroneous operation of the video amplifier is prevented, thereby supplying normal image signals to the LCD. The drive circuit comprises a clip circuit for clipping the amplitude range of the voltage of a picture signal input from an input terminal; a polarity inversion circuit for receiving the picture signal whose amplitude range was clipped by the clip circuit, and for converting the picture signal so that an inverted signal and a non-inverted signal are alternately assigned to each dot; and a video amplifier for amplifying the voltage level of the converted picture signal by a predetermined amplification degree.

Abstract: In a liquid crystal display, a liquid crystal display panel is held between an upper frame and a lower frame, the upper frame having a display window. The upper frame and the lower frame are integrally molded to be coupled to each other via a U-shaped portion. Here, the upper frame and the lower frame are made by vacuum forming resin material. Thus, the liquid crystal display can be reduced in profile, size, weight, and cost.

Abstract: An opposite substrate of a reflection-type color liquid crystal display apparatus has a transparent insulation substrate made of glass or the like. An uneven portion is formed on a surface of the opposite substrate on the side of a liquid crystal. A flattened film made of acryl, polyimide or the like is formed to cover the uneven portion of the transparent insulation substrate. A common opposite electrode made of ITO or the like is formed on the flattened film. A liquid crystal orientation layer made of polyimide or the like is formed on the opposite electrode. A light scattering mechanism is constituted of said uneven portion of the transparent insulation substrate and the flattened film.

Abstract: A reflection-type liquid crystal display according to the invention includes two glass substrates, a transparent electrode provided on one glass substrate, an insulator film which is provided on another glass substrate and on which an uneven structure is formed, a reflecting electrode provided on the insulator film, and a liquid crystal layer sandwiched between a side of the transparent electrode and a side of the reflecting electrode. The insulator film includes a first insulating layer in which a large number of depressions isolated as surrounded by protrusions are irregularly arranged and a second insulating layer covering the insulating layer entirely. The protrusions are all connected in a network, so that if some of these protrusions have weaker adherence with an underlying layer, they can be supported by the surrounding protrusions.

Abstract: A connecting substrate 23 of a liquid crystal display device 10 is supported by a first support member 41 and a second support member 43 and a first shield plate 31 is separated from a second shield plate 34 by a predetermined distance capable of restricting unnecessary electromagnetic radiation.

Abstract: As a configuration of a gate island consisting of a laminated structure including a gate electrode, a gate insulating film and a semiconductor film for constituting a thin film transistor, the gate insulating film and the semiconductor film are formed into a plane shape equal to or smaller than the gate electrode and covered with a channel protection film. Further, a drain electrode and a source electrode are formed to be connected with the semiconductor film through openings provided to the channel protection film. Consequently, side surfaces of the semiconductor film and the gate insulating film can be covered with the channel protection film formed in an upper layer, and impurities existing in a liquid crystal layer can be prevented from entering the semiconductor film by diffusion or an electric field, thereby improving the characteristic of a TFT.

Abstract: A reflection LCD device has, on a front panel, a first phase shifter having a retardation of 145 to 180 nm which is a sum of ¼ of the central wavelength, 550 nm, of the visible wavelength range and an additional retardation, and a second phase shifter having a retardation of 250 to 300 nm which corresponds to ½ of the central wavelength. The optical axis of the first phase shifter is arranged so that the additional retardation of the first phase shifter and the residual retardation of the LC layer after application of a voltage cancel each other.

Abstract: A double-sided, direct-irradiation type backlight unit has a structure of capable of reducing the luminance irregularity and improve the luminance efficiency. The backlight unit has a scatter-reflection rod member 101 between each adjacent two of elongate lamps. The scatter-reflection rod member 101 has a symmetric shape with respect to the line passing the center thereof in X-direction, and that passing the center thereof in Y-direction. The light emitted from the elongate lamp 102 in X-direction is reflected by the scatter-reflection-rod member 101 and then travels in the direction toward the front- and rear-side diffusion plates 106.

Abstract: A multi-domain alignment liquid crystal display device in which liquid crystal molecules are aligned through a simple process and panel gap is maintained in stable fashion includes a first plate having a thin-film transistor provided at each point of intersection of a scanning line and signal line, a pixel electrode connected to the thin-film transistor and a first orientation layer formed on the pixel electrode and defining a curved surface, and a second plate having RGB color layers, an counterelectrode provided so as to oppose the pixel electrode, and a second orientation layer. A columnar spacer for regulating the panel gap is provided between the two opposing plates, and liquid crystal is sandwiched between the two plates and subjected to multi-domain alignment by the first orientation layer having the curved surface and the columnar spacer.

Abstract: A video processor comprises a bit rate converter for converting an M-bit input video signal to an N-bit output video signal by retaining gray levels of the M-bit input video signal (where, N is smaller than M). A number of N-bit input gray levels are mapped in a gamma correction memory to a number of output gray levels. The output gray levels are distributed on a non-linear curve complementary to a non-linear curve on which gray levels of a display device are distributed. The memory delivers one of the output gray levels when the N-bit output video signal of the bit rate converter corresponds to one of the N-bit input gray levels. In one embodiment, the bit rate converter truncates lower significant bits of the M-bit video signal, represents the truncated bits by a different number of binary-1's, and distributes the binary-1's over a varying number of subsequent frames depending on the value of the truncated bits.

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: The LCD device includes a liquid crystal panel, a backlight unit, a circuit board disposed at rear side of the backlight unit, and a number of flexible substrates each mounting thereon a driver chip and connecting the terminals of the liquid crystal panel and the circuit board. The flexible substrate has a cut-out at each side edge thereof. A protrusion formed on the backlight unit or inner housing passes the cut-out to protrude toward the housing of the LCD device.