Abstract: The backlight device includes: a backlight including a plurality of light sources; and a backlight control part. The backlight includes a plurality of divided areas, and light sources disposed in each of the plurality of divided areas are chain-connected. The backlight control part includes at least one backlight control unit for controlling turning on and off of the backlight which includes the plurality of divided areas, with respect to the each divided area. The backlight control unit includes a selection unit for selecting one of divided areas, at least one backlight drive path. The selection unit selects the one of divided areas in a time division manner, and the light sources of the one of divided areas are driven by sharing the at least one backlight drive path in common.

Abstract: The present invention is intended to control the color temperature of white exhibited by a liquid crystal display device. White is produced when light waves emitted through pixels associated with three colors of red; green, and blue have maximum intensities. The amounts of light emitted through the respective pixels are controlled by differentiating the shapes of the pixel electrodes disposed at the respective pixels from one another. Thus, the color temperature of white is controlled. Otherwise, the shapes of interceptive films disposed at the respective pixels are differentiated from one another in order to control light waves emitted through the respective pixels. Thus, the color temperature of white is controlled. The interceptive film may be shaped like the pixel electrode. Otherwise, the interceptive film may be realized with an interceptive pattern other than that of the pixel electrode or one of openings bored in a black matrix.

Abstract: A liquid-crystal display device is provided which is improved in image quality by supplying a reference voltage signal to a liquid-crystal display panel through a multiplicity of distributed supply paths. The liquid-crystal display device includes a liquid-crystal display panel and a semiconductor device connected to a part of a periphery of the liquid-crystal display panel. The liquid-crystal display panel has a plurality of signal lines for supplying various signals to address pixels, on one of a pair of substrates arranged oppositely through a liquid crystal. The signal lines include a common bus line for supplying a reference voltage signal. The semiconductor device is structured with a semiconductor chip mounted on a flexible board. The flexible board at least has a line leading to a terminal for supplying a signal to the signal line of the liquid-crystal display panel through the semiconductor chip.

Abstract: A liquid crystal display includes a pair of transparent substrates opposed to each other with liquid crystal therebetween, one of the pair of transparent substrates having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel areas defined by the drain signal lines and the gate signal lines. The pixel areas includes a pixel electrode formed of a transparent electrode having a plurality of slits including a slit opened in a first direction and a slit opened in a second direction, and a counter electrode formed of a transparent electrode disposed between the transparent electrode of the pixel electrode having the plurality of slits and the one substrate.

Abstract: A liquid crystal display includes a pair of transparent substrates opposed to each other with liquid crystal therebetween, one of the pair of transparent substrates having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel areas defined by the drain signal lines and the gate signal lines. The pixel areas includes a pixel electrode formed of a transparent electrode having a plurality of slits including a slit opened in a first direction and a slit opened in a second direction, and a counter electrode formed of a transparent electrode disposed between the transparent electrode of the pixel electrode having the plurality of slits and the one substrate.

Abstract: The display device including: a display panel; a backlight; a memory for converting frame rate of an input video signal and outputting a video signal; an interpolation frame generation unit for generating an interpolation frame based on the video signal output from the memory; a histogram generator for generating a histogram based on the input video signal; and a backlight brightness calculation unit for calculating a backlight control signal, the display device further comprising: wherein image data for display, which is obtained by an N-th frame of the input video signal, and image data of the interpolation frame generated based on the N-th frame and an (N+1)-th frame of the input video signal, is input to the display panel; and wherein the backlight control signal calculated based on the histogram generated based on the image data of the N-th frame is used for displaying the image data for display.

Abstract: A liquid crystal display includes a pair of transparent substrates opposed to each other with liquid crystal therebetween, one of the pair of transparent substrates having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel areas defined by the drain signal lines and the gate signal lines. The pixel areas includes a pixel electrode formed of a transparent electrode having a plurality of slits including a slit opened in a first direction and a slit opened in a second direction, and a counter electrode formed of a transparent electrode disposed between the transparent electrode of the pixel electrode having the plurality of slits and the one substrate.

Abstract: A display device includes a substrate, a gate line formed over the substrate, a first insulating film formed over the substrate and the gate line, a semiconductor film formed over the first insulating film, a drain electrode formed over the semiconductor film, a source electrode formed over the semiconductor film, a data line connected to the drain electrode and formed over the first insulating film, a second insulating film formed over the source electrode and the data line, a pixel electrode electrically connected to the source electrode and formed over the second insulating film, and a transparent conductive film connected to the data line through a contact hole formed in the second insulating film. The transparent conductive film includes a first portion which none of the first insulating film and the second insulating film underlie.

Abstract: A liquid crystal display includes a pair of transparent substrates opposed to each other with liquid crystal therebetween, one of the pair of transparent substrates having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel areas defined by the drain signal lines and the gate signal lines. The pixel areas includes a pixel electrode formed of a transparent electrode having a plurality of slits including a slit opened in a first direction and a slit opened in a second direction, and a counter electrode formed of a transparent electrode disposed between the transparent electrode of the pixel electrode having the plurality of slits and the one substrate.

Abstract: A liquid crystal display device includes a liquid crystal display panel having plural pixels, a lighting device having at least one light source and projecting light generated by the light source on the liquid crystal display panel, and a circuit supplying a first current during a first period and a second current smaller than the first current during a second period to the light source alternately. The circuit includes a current monitoring circuit which measures the first current and the second current, and a light control circuit which adjusts a ratio of the first period to the second period based upon a signal from the current monitoring circuit.

Abstract: In a liquid crystal display device where pixel electrodes and counter electrodes are arranged on one substrate in a stacked manner by way of an insulation layer, it is possible to lower a drive voltage while maintaining optical transmissivity. Pixels each of which includes a first pixel electrode, a second pixel electrode and a counter electrode are arranged on a substrate in a matrix array. A first pixel electrode and a second pixel electrode in one pixel include a plurality of comb-teeth portions respectively. The first pixel electrode and the second pixel electrode are alternately arranged on the same layer in an opposed manner with a gap defined between the comb-teeth portion of the first pixel electrode and the comb-teeth portion of the second pixel electrode. The first and second pixel electrodes and the counter electrode are arranged in a stacked manner with an insulation layer sandwiched therebetween.

Abstract: The present invention provides a liquid crystal display device which includes a pixel electrode and a counter electrode in a pixel formed on a surface of a substrate which faces liquid crystal, the counter electrode is formed below an insulation film, and the pixel electrode is formed above the insulation film, wherein the counter electrode is formed over a whole area of a center except for a slight periphery of at least the pixel, the pixel electrode is constituted of separate pixel electrodes to which a video signal which is supplied to the pixel is inputted through the separate switching elements at the same timing, and the separate pixel electrodes are respectively formed of a plurality of electrodes and the respective electrodes are alternately arranged.

Abstract: A liquid crystal display device which can enhance power-consumption reduction efficiency irrespective of inputted image data is provided.

Abstract: Below a transparent pixel electrode, an opaque pixel electrode is arranged while sandwiching an insulation film between the transparent pixel electrode and the opaque pixel electrode. A common electrode is arranged below the opaque pixel electrode thus forming a holding capacitance between the common electrode and an opaque metal electrode. In case when the pixel is divided into four or more portions, an interval between the pixel electrode and the common electrode is set to an unequal pitch size or an unequal electrode width within one pixel.

Abstract: A one-frame interval is divided into a light field interval and a dark field interval. In the light field interval, the display data of high tones is displayed, while in the dark field interval, the display data of low tones is displayed. This divisional display makes it possible to pseudoly display the tones of the input display data. Then, in a case that the tones of the input display data is on the lower tone side, the display data of the dark field is set to the corresponding minimum tone with the minimum luminance, while in a case that the tone of the input display data is on the higher tone side, the display data of the light field is set to the corresponding maximum tone with the maximum luminance.

Abstract: A liquid crystal display device includes a pair of substrates with a liquid crystal layer therebetween, and a plurality of pixel regions defined by gate signal lines and drain signal lines. A counter electrode which is planar with a substantially rectangular shape is formed on each pixel region, with a pixel electrode having a plurality of slits in overlapping relationship with the counter electrode. A counter voltage signal line is formed in parallel with the gate signal lines and connected with the counter electrode, a first contact hole for connecting the pixel electrode and a source electrode, a connection line and second and third contact holes are provided. The counter electrode is arranged so as to not overlap the first contact hole.

Abstract: A display device includes a substrate, a gate line formed over the substrate, a first insulating film formed over the substrate and the gate line, a semiconductor film formed over the first insulating film, a drain electrode formed over the semiconductor film, a source electrode formed over the semiconductor film, a data line connected to the drain electrode and formed over the first insulating film, a second insulating film formed over the source electrode and the data line, a pixel electrode electrically connected to the source electrode and formed over the second insulating film, and a transparent conductive film connected to the data line through a contact hole formed in the second insulating film. The transparent conductive film includes a first portion which none of the first insulating film and the second insulating film underlie.

Abstract: The present invention provides a liquid crystal display device which can enhance a numerical aperture of pixels. A liquid crystal display device includes pixels which are arranged close to each other without having a signal line in a boundary on a substrate, and a counter electrode, an insulation layer and a pixel electrode which generates an electric field between the pixel electrode and the counter electrode which are sequentially stacked in each pixel. The pixel electrode is constituted of a plurality of electrodes which are arranged in parallel in a state that the electrodes are overlapped to the counter electrode and include portions which are arranged close to the pixel electrode of another neighboring pixel. A conductive layer is provided between a boundary portion of the pixels arranged close to each other and between a layer on which the pixel electrode is formed and the substrate.

Abstract: In the case where one horizontal period becomes shorter as a high frame rate drive of 120 Hz or higher is introduced or the resolution is increased, the time for the writing in of a voltage to the holding capacitor of pixels cannot be sufficiently secured.

Abstract: A liquid crystal display device with a planar counter electrode formed on the first substrate in each pixel region, a pixel electrode formed on the counter electrode by way of an insulation layer, the pixel electrode formed of a first pixel electrode and a second pixel electrode in the pixel region, the first pixel electrode and the second pixel electrode have a large number of slits which are arranged in parallel in the electrodes and the extending direction of the slits is different from both extending directions of the gate lines and the drain lines, and the neighboring sides of the first and the second pixel electrodes are arranged to be parallel to each other, and a portion between the neighboring sides of the first and the second pixel electrodes is positioned above the counter electrode.