摘要:
A liquid crystal device comprises pixels which are switchable between a white state 5 and a black state 6. Spacers 10 are disposed in gaps between the pixels and are birefringent such that the spacers 10 have the same optical properties as liquid crystal in the black state 6. For example, the spacers 10 may have the same retardation as the liquid crystal layer with an optic axis fixed in the direction of the optic axis of the liquid crystal when in the black state 6.
摘要:
A vertically aligned helix-deformed ferroelectric liquid crystal display is provided which includes: the first (10) and second glass substrates (50) each of which has two surfaces, the first (10) and second glass substrates (50) facing each other; a first transparent electrode (20) having a first potential, being formed on a first surface (12) of the first glass substrate (10); a second transparent electrode (30) having a second potential different from the first potential, being formed on the first surface (12) of the first glass substrate (10); a first vertical alignment layer (40) being formed on the first surface (12) of the first glass substrate (10), on which the first and second transparent electrodes (20, 30) are formed; a second vertical alignment layer (60) formed on a first surface (52) of the second glass substrate (50); and a ferroelectric liquid crystal (70) being filled between the first and second glass substrates (10, 50) on which the first and second vertical alignment layers (40, 60) are respectively formed, facing each other, the ferroelectric liquid crystal (70) having a shorter helix pitch than the wavelength of the light, the ferroelectric liquid crystal (70) being helix-deformed in response to an electric field applied across the first and second transparent electrodes (20, 30) so that its molecules rotate in a specific direction, thereby achieving uniform alignment and the analog gray scale capability.
摘要:
The present invention features designs of pixels and designs of control features for seals on AMLCD tiles optimized for tiling AMLCD flat panel displays (FPDs) which have visually imperceptible seams. The FPD structure has an image viewplane which is continuous and remote from the pixel apertures or image source plane on the inside of the tiles. The image is formed on the view plane by a distributed ultra low magnification flies-eye optical system (a screen) that is integrated with the tiles, effectively excluding and obscuring an image of the seams. The innovations described herein minimize the defects on the perimeter pixels by effectively damming the waviness of the front of the seal near the perimeter pixels on the tiles. Dark space required for the seal between the interior tile edges and active regions of the pixels is decreased, as is the space allocated for wiring thereby increasing the feasible aperture ratios near the mosaic edges and all apertures. The tile designs make effective use of the are of an entire manufacturing panel.
摘要:
A ferroelectric liquid crystal display comprising a ferroelectric liquid crystal element in which a ferroelectric liquid crystal is sandwiched between a pair of substrates which have a plurality of scanning electrodes and a plurality of signal electrodes on their respective facing surfaces, and a light source which emits lights of a plurality of colors different from each other continually. The scanning period (TS) during which one of the colors of the light source is emitted is divided in two sections. The 1st section (SC1) has a selection period during which the display state is determined and a non-selection period during which the display state selected in the selection period is maintained, and the 2nd section (SC2) which is the rest of the scanning period has a selection period during which a black display state is selected and a non-selection period during which the black display state selected in the selection period is maintained.
摘要:
An antiferroelectric liquid crystal panel not exhibiting a blackening phenomenon due to temperature change and comprising a pair of substrates and an antiferroelectric liquid crystal which is interposed between the substrates and to which a chiral agent whose helical axis is generally parallel to the normal of the substrate is added. The chiral agent added may be clockwise or counterclockwise with respect to the helical axis. Alternatively, the two types are added to the antiferroelectric liquid crystal. The Jones's vector of the light emerging from a liquid crystal cell is found, and the angle of shift between the upper and lower chevrons is calculated.
摘要:
An optical display system (10) includes a source (12) of white uncollimated light, a color separator (14) for separating the white light into spectral components, a reflective ferroelectric light valve (18) for spatially modulating the spectral components, and a polarizing beam splitter (16) for directing vertically polarized light towards a display lens (28). The system further includes a corrective film (34) disposed in an optical path between the white light source and the light valve. The film, which may be made of a ferroelectric material or other birefringent material, ensures that retardance of the light valve is approximately 180 degrees or some other desired angle over a spectrum of interest, in this manner, the light valve is achromatized by the film.
摘要:
An active matrix liquid crystal display device having a rapid optical response and being a wide viewing angle, the device comprising two glass plates and an insulator layer formed of an insulator film and an alignment film, the insulator layer being formed on each glass plate, wherein an pixel electrode and an active device connected to the pixel electrode are arranged, in a matrix state, on a first glass plate and a common electrode opposite to the pixel electrodes is arranged on a second glass plate, out of the two glass plates; a gap between the first glass plate and the second glass plate is 1 to 3 µm, a liquid crystal having a layer structure is filled in the gap, the liquid crystal is a ferrielectric liquid crystal or a ferrielectric liquid crystal composition which can change among a co-present state of two ferrielectric phases, two ferroelectric states and an intermediate state therebetween by an action of an electric field when a voltage is applied between the pixel electrode and the common electrode; crossed polarizers are arranged on the first glass plate and the second glass plate so as to bring the two ferroelectric states into a light state; and an analog gray-scaling display is performed on the basis of a voltage change with a small width of hysteresis between a change from a ferrielectric state to a ferroelectric state and a change from a ferroelectric state to a ferrielectric state and without a threshold, by controlling a voltage applied between the pixel electrode and the common electrode.
摘要:
A liquid crystal element includes two pieces of light-transmissive substrate (1,2) which respectively include signal electrodes (3) and scanning electrodes (5) arranged in stripe patterns, and a liquid crystal layer (10) formed by filling the space between the light-transmissive substrates with a ferroelectric liquid crystal. A conductive line (11) is provided between adjacent signal electrodes (3) and adjacent scanning electrodes (5) so that only the longitudinal side faces of the conductive line are in contact with the longitudinal side faces of the respective electrodes. Each electrode (3) and conductive lines (11) adjacent to the electrode form a hybrid electrode, and an insulating light-blocking member (13) is formed between adjacent hybrid electrodes. The conductive line includes a first layer (11a) in contact with the light-transmissive substrate, a second layer (11b) placed on the first layer, and a topmost third layer (11c). The first layer is made of a conductive material such as indium tin oxide and tantalum, which is highly adhesive to the light-transmissive substrate. This structure ensures the flatness of the conductive lines, and prevents peeled-off conductive lines. The invention also provides a method of fabricating such an electrode substrate.
摘要:
A ferroelectric liquid crystal element comprises a ferroelectric liquid crystal and a pair of substantially parallel substrates having opposite surfaces between which the ferroelectric liquid crystal is sealed. The substrates are provided with electrodes to which voltages are applied, and are subjected to one axis orientation treatment so as to orient the ferroelectric liquid crystal. The ferroelectric liquid crystal has an orientation state represented by the following condition. θ wherein α is a pretilt angle of the ferroelectric liquid crystal, θ is a tilt angle, and δ is an inclination angle of an Sm*C layer. The ferroelectric liquid crystal exhibits at least two stable states in orientation. An angle θ a 1/2 between optical axes of these two stable states and the tilt angle θ of the ferroelectric liquid crystal satisfy the condition θ > θ a > θ/2.