Abstract: A reflection-type liquid crystal display device includes a first substrate, a second substrate facing the first substrate and carrying projections and depressions, a reflective electrode on the second substrate so as to cover the projections and depressions and in electrical contact with a switching device provided on the second substrate via a contact hole, and a negative liquid crystal layer between the first and second substrates, wherein the contact hole is disposed centrally to the reflection electrode and a structure controlling alignment of liquid crystal molecules in the liquid crystal layer is disposed so as to overlap the contact hole viewed in a direction perpendicular to the second substrate.

Abstract: The display apparatus has a common substrate and a TFT substrate, and a flexible printed board is attached to the TFT substrate. ICs are arranged in an area of the TFT substrate in a row along an alignment direction, and connection terminals are arranged in that area by the shorter sides of the ICs along the alignment direction of the ICs. The flexible printed board and ICs can be fitted to the TFT substrate, by an anisotropic electro-conductive film, using a thermo-compression bonding head or heads.

Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.

Abstract: An LCD apparatus has a control circuit 40 which makes a timing of the rear edges of scanning pulses provided to predetermined scanning lines coincide with the time when the display potential is renewed, wherein each of the predetermined scanning lines corresponds to an addition of a picture line to a picture or a reduction from two picture lines to one picture line on a picture in order to compensate for a difference between the number of scanning lines of the LCD and the number of lines of the picture to be displayed. In the control circuit, a circuit detects cycle times of the vertical and horizontal sync pulses, an MPU determines the reference value REF on the basis of the detected value and count CH of the horizontal sync pulse *HS from a counter, and a circuit generates a signal AE which makes the time when the pulse count CD of pixel clock CLKD from the counter becomes equal to the REF that coincides with the timing of the rear edge of scanning pulse.

Abstract: A liquid crystal display device includes a liquid crystal layer confined between first and second substrates, an electrode formed on the first substrate so as to create an electric field acting generally parallel to a plane of the liquid crystal layer, and a plurality of pixels being defined in the liquid crystal layer, wherein each of the pixels includes therein a plurality of domains having respective orientations for liquid crystal molecules, such that the orientation is different between a domain and another domain within the plane of the liquid crystal layer.

Abstract: When a thin-film transistor (TFT) is formed on a glass substrate, electric charges caused in the TFT can be removed so as to avoid electrostatic damage in the TFT. A short-circuiting pattern that short-circuits the source region and the drain region of the TFT is added to a polysilicon pattern that constitutes the TFT. This short-circuiting pattern is removed at the same time as or after the wiring formation in the source region and the drain region.

Abstract: A storage capacitance Cs0 (=Cs+Csadd) added to a pixel capacitance is set such that a transmittance T1 at a voltage V1 of a pixel electrode becomes substantially equal to a transmittance T2 at a voltage V2 of the pixel electrode when a holding period is terminated. In the case of a normally black type liquid crystal display device, for example, when it is assumed that a white data voltage is VdW, a liquid crystal capacitance in white display is ClcW, and a liquid crystal capacitance in black display is ClcB, a capacitance value of the storage capacitance Cs0 is set such that difference between the transmittance obtained at the pixel voltage, that is changed by an amount of variation &Dgr;Vs of a pixel voltage expressed by &Dgr;Vs=VdW((ClcW−ClcB)/(ClcW+Cs0)), and the transmittance obtained at the white data voltage VdW can be reduced smaller than 13% of the transmittance obtained at the white data voltage VdW.

Abstract: Disclosed are a liquid crystal display device and a method and a circuit for driving the same. A gradation difference between the image data to be supplied to the picture elements of the same color of two pixels adjacent in a horizontal direction is detected in a gradation difference judging section, and when the gradation difference is larger than a predetermined gradation difference, it is judged in the same pattern of a size relationship detecting section and a horizontal pattern counting section whether the size relationship between the gradations of the picture elements of the same color of the two pixels repeats in the horizontal direction at least a certain number of times or not. And hence, when the size relationship repeats at least a certain number of times, it is compared with those of a plurality of lines continuously arranged in a vertical direction, and it is judged on the basis of the result of the comparisons whether a flicker occurs or not.

Abstract: A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic is provided. The liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage is applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.

Abstract: A defect correcting method for a liquid crystal panel is disclosed, comprising the step of, when a plurality of pixels are connected, cutting off pixel electrodes of other pixels from a signal supply line in such a way as to drive the other pixels by a TFT of a pixel having a color filter of a highest light transmittance among the plurality of pixels. Another defect correcting method for a liquid crystal panel is disclosed, the liquid crystal panel including a correcting wiring formed beforehand to connect pixels adjacent to each other, comprising the step of: when a defective pixel occurs, electrically connecting a pixel electrode of the defective pixel to that of a pixel adjacent to the defective pixel.

Abstract: A thin-film transistor of a liquid crystal display device includes an ohmic electrode such that the ohmic electrode is formed of a first conductor film of a refractory metal element defined by a first lateral edge and a second conductor film containing Al and defined by a second lateral edge, wherein the second lateral edge is receded with respect to the first lateral edge when viewed in a direction perpendicular to a substrate on which the thin-film transistor is formed.

Abstract: A drive control circuit supplies a gate voltage so that display quality is not degraded even in a case where a vertical scanning frequency or a horizontal scanning frequency is changed. The circuit includes a timing controller for detecting a change of a horizontal scanning frequency, a gate voltage generating circuit for generating two kinds of gate-on voltages Va and Vb (Va<Vb), and a switch for outputting one of the gate-on voltages Va and Vb from the gate voltage generating circuit in accordance with an output of the timing controller. The timing controller includes a counter for counting the number of clocks for one horizontal period, and a comparator for comparing a count result with a threshold value. When the horizontal scanning frequency is in a normal state, the low gate-on voltage Va is outputted, and when the horizontal scanning frequency exceeds a predetermined threshold value, that is, the count value falls below a threshold value, the high gate-on voltage Vb is outputted.

Abstract: The present invention relates to a liquid crystal display provided with an electrostatic protection element and an object of the present invention is to provide the liquid crystal display provided with superior redundancy and at the same time a sufficient protection function against static electricity in which relatively low voltage generates for a long period of time.

Abstract: Polarity patterns (polarity pattern signal POL) are stored in a ROM in a polarity pattern controlling portion. Then, the polarity pattern is changed according to applications of a liquid crystal display panel. Since the polarity pattern is stored in the ROM, the polarity pattern can be changed without modification of a hardware. Also, two sets of polarity patterns or more are stored in the ROM, and then any one polarity pattern can be output according to the application. In addition, the polarity pattern signal POL and image signals RGB are compared with each other, and then the polarity pattern which is to be read from the ROM is switched according to the result.

Abstract: A liquid crystal display device comprising: a gate bus line 12a ; a data bus line 20a crossing the gate bus line: a picture element electrode 36; and a transistor including a first electrode 44 connected to the data bus line, a second electrode 40 connected to the picture element electrode, and a gate electrode 13, the first electrode 44, the second electrode 40 or the gate electrode 13 being extended along the gate bus line 12a or the data bus line 20a. The first electrode 44, the second electrode 40 or the gate electrode 13 is extended along the gate bus line 12a or the data bus line 20a, whereby a line disconnected part of the gate bus line 12a or the data bus line 20a can be repaired by the first electrode 44, the second electrode 40 or the gate electrode 13.

Abstract: In a backlight unit, a plurality of light sources whose luminescent chromaticities are different mutually, i.e., a white color fluorescent tube W, a red color fluorescent tube R, a green color fluorescent tube G, and a blue color fluorescent tube B, are arranged on both end in a longitudinal direction of a light guide plate respectively. The white color fluorescent tube W is arranged at a position closest to the end surface in a longitudinal direction of the light guide plate. Luminances of these fluorescent tubes W, R, G, B can be adjusted independently by control voltages supplied from external devices. Lights emitted from a plurality of light sources enter into the light guide plate, and then the lights are emitted from the light guide plate in a predetermined direction. Since the backlight unit itself has a color adjusting function, the reduction of the luminance and the change of the color balance due to degradation of the fluorescent tubes can be corrected.

Abstract: The invention relates to a substrate for a liquid crystal display used in a display section of an information apparatus, a liquid crystal display having the same, and a method of manufacturing the same. There is provided a substrate for a liquid crystal display which achieves good display quality with reduced manufacturing steps, a liquid crystal display having the same, and a method of manufacturing the same. TFTs are formed on a glass substrate. A protective film is formed on the TFTs, and a resist pattern is formed on the protective film, the resist pattern having openings located above source electrodes, gate bus line terminals, and drain bus line terminals. The resist pattern is baked at a baking temperature of 200° or more after irradiating the surface thereof with ultraviolet light to form a wrinkled resin layer having a wrinkled surface.

Abstract: A liquid crystal display device includes a first projection pattern formed of insulating material on a second electrode, and a second vertical alignment film for covering the second electrode and at least the first projection pattern on the second electrode. With this configuration, top end portions of the first projection pattern formed over the light shielding films come into contact with a first substrate. Accordingly, the step of scattering spacers can be omitted, change in the cell thickness can be prevented, and good display quality can be achieved.

Abstract: A display has a display panel of a first aspect ratio and is able to display on the display panel an image of a second aspect ratio whose width element is larger than that of the first aspect ratio. The display has a gate driver, a data driver, and a timing controller. The gate driver sequentially selects gate lines of the display panel. The data driver stores data for one gate line and supplies the data to one of the gate lines selected by the gate driver. The timing controller supplies control signals to the gate and data drivers so that predetermined data is displayed in top and bottom non-image areas of the display panel during a vertical blanking period. The display is capable of displaying images of different sizes.

Abstract: Disclosed are a liquid crystal display panel having a testing terminal for prober check and a method of manufacturing the same. A black matrix is formed by laminating color filters of a plurality of colors one upon another in a non-display portion of a glass substrate. A mask is disposed in a region opposite to a testing terminal, and ITO is sputtered, thus forming a common electrode. Alternatively, an insulating resin film is formed on a part of the common electrode opposite to the testing terminal.