Abstract: The present invention provides a liquid crystal display device used as a display part of an electronic apparatus which exhibits high brightness and favorable display quality. The liquid crystal display device includes a pair of substrates which are arranged to face each other in an opposed manner; vertical-alignment type liquid crystal which is sealed between the pair of substrates; a plurality of pixel regions, each pixel region including a sub pixel having a pixel electrode on one substrate and a sub pixel having a pixel electrode on one substrate, a slit formed between the pixel electrodes; and a singular point control part which includes projecting portions which are formed on end portions of the pixel electrodes on the slit-side and controls singular points of the liquid crystal.

Abstract: A liquid crystal display device according to the present invention is constituted of a TFT substrate and an opposing substrate which are arranged so as to be opposite to each other with a liquid crystal layer interposed therebetween. In addition, in the liquid crystal layer, formed is a polymer into which a polymer component added to liquid crystal is polymerized, and which determines directions in which liquid crystal molecules tilt when voltage is applied. In the TFT substrate, formed are a sub picture element electrode directly connected to a TFT and a sub picture element electrode connected to the TFT through capacitive coupling. In each of these sub picture element electrodes, formed are slits extending in directions respectively at angles of 45 degrees, 135 degrees, 225 degrees and 315 degrees to the X axis.

Abstract: A TFT substrate (110) of a liquid crystal display device (100) includes a common electrode (112) and a drain electrode (114) facing the common electrode (112) via an insulating layer (113) and provided with an opening (114a) for making an electric field generated between the common electrode (112) and the drain electrode (114) supplied into a liquid crystal layer (130). Since the opening (114a) for making an electric field supplied into the liquid crystal layer (130) is provided in the drain electrode (114) made from metal, the opening (114a) can be formed more finely than before. Thus, a liquid crystal display which can more surely control spray-to-bend transition can be attained.

Abstract: The invention relates to a liquid crystal display used in a television receiver or a display section of an electronic apparatus and provides a liquid crystal display having a wide viewing angle and high viewing angle characteristics. The viewing angle characteristics of low gradations are improved by the capacitive coupling HT method. The viewing angle characteristics of high gradations above the intermediate gradation are improved by the driving HT method. A liquid crystal is driven using the capacitive coupling HT method and the driving HT method in combination to combine the effect of improvement of both methods, thereby improving the viewing angle characteristics of a liquid crystal display for a wide range from a low gradation to a high gradation.

Abstract: The invention relates to a liquid crystal display device including a first transistor, a plurality of sub-picture element electrodes formed in a picture element region, a control electrode formed in capacitance coupling with at least one of the plural sub-picture element electrodes, the control electrode being applied with a display voltage from the first transistor, and an auxiliary capacitance bus line held at a predetermined voltage level and constituting an auxiliary capacitance between the auxiliary capacitance bus line and the control electrode. A second transistor is provided between the sub-picture element electrode coupled with the control electrode by the capacitance coupling and the auxiliary capacitance bus line or between the sub-picture element electrode coupled with the control electrode by the capacitance coupling and the sub-picture element electrode connected to the first transistor.

Abstract: The invention relates to a substrate for a liquid crystal display, a liquid crystal display having the substrate, and a method of driving the display and provides a substrate for a liquid crystal display which allow high display characteristics to be achieved, a liquid crystal display having the substrate, and a method of driving the display. The substrate includes two TFTs having gate electrodes connected to a gate bus line and drain electrodes connected to a drain bus line, a pixel electrode connected to a source electrode, a pixel electrode connected to another source electrode and separated from the pixel electrode, another TFT having a gate electrode connected to another gate bus line and a source electrode connected to the pixel electrode, and a buffer capacitor portion having a buffer capacitor electrode connected to another drain electrode and another buffer capacitor electrode connected to a storage capacitor bus line.

Abstract: The invention has an object to provide a liquid crystal display in which a wide angle of view is obtained and a response time at a halftone can be shortened by regulating an alignment orientation of a liquid crystal by the use of a polymer fixation system in which a liquid crystal layer containing a polymerizable component is sealed between substrates, and the polymerizable component is polymerized while a voltage is applied to the liquid crystal layer to fix a liquid crystal alignment. A liquid crystal layer containing a polymer for regulating a pretilt angle of a liquid crystal molecule and a tilt direction at a time of driving is sealed between two substrates arranged opposite to each other.

Abstract: The present invention provides a liquid crystal display device used as a display part of an electronic apparatus which exhibits high brightness and favorable display quality. The liquid crystal display device includes a pair of substrates which are arranged to face each other in an opposed manner; vertical-alignment type liquid crystal which is sealed between the pair of substrates; a plurality of pixel regions, each pixel region including a sub pixel having a pixel electrode on one substrate and a sub pixel having a pixel electrode on one substrate, a slit formed between the pixel electrodes; and a singular point control part which includes projecting portions which are formed on end portions of the pixel electrodes on the slit-side and controls singular points of the liquid crystal.

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: In a liquid crystal display device in which in order to prevent image sticking in a half tone type MVA using a floating sub-pixel, a second TFT is provided between a sub-pixel directly connected to a TFT and the floating sub-pixel, its alignment is improved and a display quality is improved. A control capacitance electrode of an adjacent pixel is extended to provide an alignment control electrode in a corner portion of a pixel in which a propagation distance of liquid crystal alignment is long, and the propagation distance of the liquid crystal alignment is shortened, and at the same time, a slit part is formed of electrodes different from each other in voltage polarity to stabilize the alignment.

Abstract: Sub picture element electrodes made of ITO are formed in a picture element region which is sectioned by gate bus lines and data bus lines. These sub picture element electrodes are electrically connected to each other with a wiring connection. This wiring connection includes a metal connection portion which is formed simultaneously with the data bus lines and the like, and an ITO connection portion which is formed simultaneously with the sub picture element electrodes.

Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=?1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.

Abstract: The invention relates to a liquid crystal display based on an MVA mode of multi-division alignment in which alignment states of liquid crystal molecules having a negative dielectric anisotropy are made different from each other, and provides a liquid crystal display in which a drop in transmittance is suppressed and response characteristics are improved.

Abstract: A liquid crystal display including a pair of substrates arranged opposite to each other, electrodes respectively formed on opposite surfaces of the pair of substrates, and an alignment regulating structural member, formed on at least one of the pair of substrates, and which includes at least one of a linear projection arranged on the electrode and a slit portion formed by removing a part of an electrode material of the electrode.

Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.

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: A liquid crystal display device includes a liquid crystal cell, polarizers, a first retardation plate arranged between the liquid crystal cell and the first polarizer, and a second retardation plate arranged between the liquid crystal cell and the second polarizer. Each retardation plate has an optical axis in a plane parallel to the substrate surface and a retardation of substantially ?/4. The optical axis of one retardation plate is perpendicular to the optical axis of the other. The polarizing axes of the polarizers are arranged at an angle of 45° with respect to the optical axes of the retardation plates. The liquid crystal cell is arranged such that a state of alignment of liquid crystal molecules changes, accompanying a change in a polar angle and/or change in an azimuth, upon application of a voltage.

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: A liquid crystal panel development method for a panel including first and second substrates and first and second electrodes with a display voltage applied to liquid crystal interposed therebetween. The method involves applying a voltage signal between the electrodes with an AC voltage component of amplitude Vac and a DC voltage component Vdc, changing Vac and Vdc to measure the range of optimal DC component variation ?Vdc, and determining a structure or material of the liquid crystal panel such that the range of optimal DC component variation ?Vdc becomes less than a given value. ?Vdc=|Vdcb —Vdcw|, where Vdcb is the Vdc value at the minimum range of transmittance variation when Vdc is changed with Vac being fixed for displaying black, and Vdcw is the Vdc value at the minimum range of transmittance variation when Vdc is changed with Vac being fixed for displaying white.

Abstract: The invention relates to liquid crystal displays used in television receivers and display sections of electronic apparatus and, more particularly, to a liquid crystal display in which a polymeric material included in a liquid crystal material is polymerized to impart a pre-tilt angle to the liquid crystal material. The invention provides a liquid crystal display in which gradation/luminance characteristics in an oblique direction are improved and in which reduction in luminance is suppressed. The liquid crystal display includes a TFT substrate and an opposite substrate provided opposite to each other and a liquid crystal composition including a liquid crystal material and a polymer sealed between the substrates.