Abstract: A liquid crystal display includes an insulating substrate, an alignment layer covering a main surface of the insulating substrate, and electrodes interposed therebetween. The alignment layer defines an alignment direction parallel to the main surface, an upstream side as one end's side of the alignment direction, and a downstream side as another end's side of the alignment direction, and tilts liquid crystal molecules toward the downstream side. Each electrode includes an upstream section that includes a first edge facing the upstream side and a downstream section that includes a second edge facing the downstream side and is provided with a recess recessed relative to the second edge. The first recess forms on the downstream section a third edge extending in the alignment direction and a fourth edge connecting the third edge to the second edge and facing the upstream side.

Abstract: A liquid-crystal display device of OCB mode, comprising: signal and scanning lines arranged on an insulator substrate as the signal lines are intersected by the scanning lines to form intersections; pixel-dot TFTs arranged respectively in vicinity of the intersections and connected respectively with pixel electrodes, with the signal lines and with the scanning lines; and a repair-use construction for each pixel dot, which is convertible to a diode electrically connecting one of the pixel electrodes on the each pixel dot, to one of the signal lines.

Abstract: A liquid crystal display device is configured such that a liquid crystal layer is held between a pair of substrates. The liquid crystal display device includes, in a display area including a plurality of pixels, pixel electrodes which are disposed in association with the respective pixels, a counter-electrode which is disposed to be opposed to the pixel electrodes via the liquid crystal layer, scanning lines which are disposed along a row direction of the pixels, signal lines which are disposed along a column direction of the pixels, and an electrically conductive layer which is disposed to be opposed to the counter-electrode via the liquid crystal layer between neighboring ones of the pixel electrodes, and has such a potential as to provide a black display voltage relative to a potential of the counter-electrode.

Abstract: After supply of power, a liquid crystal display device performing transition from a first state to a second state different from the first state before a display operation is provided with a transition nucleus forming portion around a pixel electrode or inside. The transition nucleus forming portion performs transition to the second state prior to other portion during a transition drive period. The transition nucleus forming portion of the pixel electrode has an edge portion formed into a reverse taper shape decreasing in its thickness toward the tip end. Therefore, transition from a splay alignment to a bend alignment is performed with simple element and drive circuit configuration in all pixels.

Abstract: A device includes a substrate including a first insulating substrate, a first electrode located on the first insulating substrate, and a second electrode located between the first insulating substrate and the first electrode via an insulating underlayer interposed between the second and the first electrode, a substrate including a second insulating substrate and a third electrode on the second insulating substrate, a liquid crystal layer which is held between the first and the third electrode and which exhibits a transition from a first state to a second state in an initializing process, and a voltage supply unit which supplies, a first voltage to the first and the second electrodes and a second voltage to the third electrode, wherein the first electrode includes a transition nucleus forming section which forms nuclei of the transition in the liquid crystal layer on the basis of the respective voltages supplied to the respective electrodes.

Abstract: A liquid crystal display includes pixels, driver circuits, and a control circuit. The control circuit sets, in a one-frame period, a first period and a second period shorter than the one-fame period and partly overlapping the first period. The control circuit controls the driver circuits, causing them to write non-video signals for the pixels in the first period, to write video signals for the driver circuits in the second period, and to write the non-video signals and the video signals alternately in units of one or more horizontal periods in a part of the first period, which overlaps the second period, and to output the non-video signals and the video signals alternately in units of one or more horizontal periods in a part of the first period, which does not overlap the second period, and to write the non-video signals in a period for writing non-video signals.

Abstract: A device includes a first substrate including a pixel electrode and an underlayer electrode a part of which is opposed to the pixel electrode, a second substrate including a counter-electrode which is opposed to the pixel electrode, and a layer which is held between the first and the second substrate, and which is in a first state prior to power-on and transitions to a second state, at a time of a display operation, wherein the pixel electrode includes a first part that passes light and a second part that reflects light, the second part includes a projection which is opposed to the counter-electrode, and a transverse electric field generating section, which is provided near the projection so as to generate a transverse electric field between the underlayer electrode and the second part, is disposed at an end portion of the second part, which is opposed to the underlying electrode.

Abstract: A display device includes a circuit which is configured to execute such control that write of a non-video signal in pixels is executed in the first period, write of a video signal in the pixels is executed in the second period which partly overlaps the first period, write of the video signal, in the pixels is executed in the third period which partly overlaps the second period, the write of the non-video signal and the write of the video signal are alternately executed in units of one horizontal cycle or horizontal cycles in a period in which the first period overlaps the second period, and the write of the video signal corresponding to the second period and the third period are alternately executed in units of one horizontal cycle or horizontal cycles in a period in which the second period overlaps the third period.

Abstract: A liquid crystal display device includes substrates which are opposed to each other, a liquid crystal layer which includes an OCB mode liquid crystal and is held between the substrates, a display section which is composed of display pixels that are arrayed in a matrix, and a driving unit which cyclically charges a reverse transition prevention signal and a video signal in each of the display pixels. The driving unit includes circuits for varying a liquid crystal voltage which is retained in the display pixel after the charging of the reverse transition prevention signal, and a liquid crystal voltage which is retained in the display pixel after the charging of the video signal, thereby making a variation amount of the liquid crystal voltage after the charging of the reverse transition prevention signal greater than a variation amount of the liquid crystal voltage after the charging of the video signal.

Abstract: A liquid crystal display device includes a liquid crystal display panel having a display section which is composed of a plurality of display pixels, a driving unit which drives the display pixels, and a control unit which controls the driving unit. A first substrate includes pixel electrodes which are disposed in association with the plurality of display pixels. A second substrate includes a counter-electrode which is opposed to the plurality of pixel electrodes. A pair of alignment films are disposed on the plurality of pixel electrodes and the counter-electrode, and control an alignment state of liquid crystal molecules, which are included in the liquid crystal layer, by rubbing treatment. Dummy display pixels are disposed on a terminal end side of the display section in a rubbing direction. A driving unit includes circuit for cyclically applying a reverse transition prevention signal to the dummy display pixels.

Abstract: A liquid crystal display device includes liquid crystal pixels, signal line groups each including a predetermined number of signal lines, and a drive circuit which selects the pixels on a row-by-row basis and drives the pixels of the selected row via the signal lines. The drive circuit includes a signal line driver which outputs a predetermined number of pixel voltages for each group driving period while the pixels of each row are being selected, a multiplexer which distributes to each signal line group the pixel voltages output from the signal line driver, and a controller which controls the multiplexer to electrically connect all of the signal line groups to the signal line driver and electrically disconnect the signal line groups one by one from the signal line driver for each group driving period, in a selection period of the pixels of an initial row that requires polarity inversion.

Abstract: There is provided an liquid crystal display apparatus configured to invert a pixel voltage and a common voltage on a frame to frame basis while setting a transition voltage Vt in such a manner that the polarity of the pixel voltage to be applied to a pixel electrode of each display pixel and the polarity of the common voltage to be applied to a common electrode of a common substrate are differentiated.

Abstract: A liquid crystal display includes an insulating substrate, an alignment layer covering a main surface of the insulating substrate, and electrodes interposed therebetween. The alignment layer defines an alignment direction parallel to the main surface, an upstream side as one end's side of the alignment direction, and a downstream side as another end's side of the alignment direction, and tilts liquid crystal molecules toward the downstream side. Each electrode includes an upstream section that includes a first edge facing the upstream side and a downstream section that includes a second edge facing the downstream side and is provided with a recess recessed relative to the second edge. The first recess forms on the downstream section a third edge extending in the alignment direction and a fourth edge connecting the third edge to the second edge and facing the upstream side.

Abstract: A liquid crystal display device includes a liquid crystal display panel (LCD panel), an area light source device which illuminates the LCD panel, a driving unit which drives the LCD panel and the area light source device, and a control unit which controls the driving unit. The LCD panel includes display pixels. The area light source device includes plural kinds of light sources which are successively turned on in one frame period. The control unit includes means for controlling the driving unit in a manner to execute video signal write and reset signal write after the video signal write, in a period in which one of the plural kinds of light sources is turned on in the one frame period. The video signal write and the reset signal write are executed with the same polarity, and a polarity of potential of the display pixels is reversed between frame periods.

Abstract: A liquid crystal display device includes display pixels which are arrayed in a matrix, a driver circuit which drives the display pixels in units of a predetermined number of rows, and a controller which controls the driver circuit so as to alternately execute non-video signal write in which a non-video signal is written by driving the display pixels on a row-by-row basis, and video signal write in which a video signal is written by driving the display pixels on a row-by-row basis. Each of the display pixels includes a first capacitance which is formed by a voltage applied between electrode substrates, and a second capacitance which is coupled to the first capacitance. The controller includes a control circuit which controls the driver circuit so as to charge a predetermined capacitance on the second capacitance in a superimposing manner during a time period in which the non-video signal write is executed.

Abstract: A liquid crystal display device includes a liquid crystal display panel DP in which liquid crystal pixels PX are connected to a source line X via pixel switching elements, and a display control circuit CNT which performs non-video signal writing for driving the source line X according to a non-video signal and applying the potential of the source line X to one of the liquid crystal pixels PX via a selected one of the pixel switching elements T and performs video signal writing for driving the source line X according to a video signal and applying the potential of the source line X to one of the liquid crystal pixels PX via a selected one of the pixel switching elements T.

Abstract: A liquid crystal display device of an OCB mode includes a liquid crystal layer held between an array substrate and a counter-substrate, and a display section composed of display pixels arrayed in a matrix. The array substrate includes pixel electrodes which are disposed in association with the display pixels. The counter-substrate includes a counter-electrode opposed to the pixel electrodes. The substrates include a pair of alignment films which are disposed on the pixel electrodes and the counter-electrode, respectively, and are subjected to rubbing treatment to control an alignment state of liquid crystal molecules included in the layer. A transition-nucleus formation section, which generates an electric field for transitioning the alignment state of the liquid crystal molecules included in the layer from a non-display state to a display state, is provided on a terminal-end side of a rubbing direction of each of the alignment films in each of the display pixels.

Abstract: Common signals VCOM during a black voltage writing period are set to be larger than common signals VCOM during a video writing period. The common voltage signals VCOM is VmH or VmL during the black voltage writing periods. The common voltage signals VCOM is VcH or VcL during video writing periods and video holding periods. The polarity of the common voltage signals VCOM is inverted alternately from frame to frame. A backlight is extinguished in the black voltage writing period.

Abstract: A liquid crystal display device of an OCB mode includes a liquid crystal layer held between an array substrate and a counter-substrate, a display section composed of a plurality of display pixels arrayed in a matrix, and a peripheral section surrounding the display section. The array substrate includes pixel electrodes which are disposed in association with the plurality of display pixels. The counter-substrate includes a counter-electrode which is opposed to the plurality of pixel electrodes. The liquid crystal display device includes a pair of alignment films which are disposed on the plurality of pixel electrodes and the counter-electrode, respectively, the pair of alignment films controlling, by rubbing treatment, an alignment state of liquid crystal molecules included in the liquid crystal layer. The peripheral section includes a splay region, which splay-aligns the liquid crystal molecules, at least on a terminal-end side in a rubbing direction of the alignment film.

Abstract: A liquid-crystal display device of OCB mode, comprising: signal and scanning lines arranged on an insulator substrate as the signal lines are intersected by the scanning lines to form intersections; pixel-dot TFTs arranged respectively in vicinity of the intersections and connected respectively with pixel electrodes, with the signal lines and with the scanning lines; and a repair-use construction for each pixel dot, which is convertible to a diode electrically connecting one of the pixel electrodes on the each pixel dot, to one of the signal lines.