Matches 151 - 192 out of 192 < 1 2 3 4
Match Document Document Title
5283674 Backlight apparatus having ventilating holes for liquid crystal display  
A liquid crystal display apparatus which prevents illumination of light by non-uniform brightness from a fluorescent lamp employed for the backlight illumination which is caused by mercury enclosed...
5247374 Liquid crystal display device with common heater between two cells  
A double-layered type while/black super-twisted liquid crystal display device including a driving cell and a compensating cell in a layered structure wherein a substrate having no optical...
5202677 Display apparatus using thermochromic material  
A visual display dependent upon the use of thermochromic materials is formed as a thin structure on a substrate sheet with a vapor deposited conductive film heater applied thereto. The current is...
5170194 Reflection type liquid crystal valve and projector having the same  
A reflection type liquid crystal light valve comprises a first transparent substrate, a second transparent substrate for supporting the liquid crystal layer together with the first transparent...
5170195 Cooling device for a liquid crystal panel  
A cooling device has a container filled with a coolant. A front side and a rear side of the container are transparent. A heatsink is provided for cooling the container. A liquid crystal panel is...
5164849 Liquid crystal display with a fast warm up  
Display apparatus and method having window shade heating. The display has an active matrix LCD with a plurality of elements and a backlight having a variable brightness. During warm-up of the...
5150231 Impact resistant ferroelectric liquid crystal apparatus  
A liquid crystal display apparatus is provided with a liquid crystal panel comprising a pair of substrates each provided with an electrode and a liquid crystal disposed between the pair of...
5119215 LCD with self regulating PTC thermistor heating element  
Positive temperature coefficient thermistors are mounted in heat transfer relationship to a support member of a material that is pervious to light. The thermistors are positioned on the support...
5119219 Liquid crystal apparatus and chiral smectic liquid crystal composition for use therein  
A liquid crystal apparatus includes a chiral smectic liquid crystal showing a first and a second orientation state disposed between first and second electrodes of a liquid cell. A drive circuit...
5088806 Apparatus and method for temperature compensation of liquid crystal matrix displays  
In a liquid crystal display, the optical transmission of the liquid crystal medium as a function of applied electric field varies with temperature. In order to ensure that the temperature of the...
5080467 Biphenyl derivatives for photostabilization in pulsed optical darkening apparatus and method  
An apparatus for a liquid crystal image projection system having a liquid crystal cell, including optical apparatus for inducing a uniform texture of scattering centers in a liquid crystal cell by...
5081542 Liquid crystal light valve goggles for eye protection  
An eye protection device 10 comprising a liquid crystal light valve 20 for providing an image of a scene. The light valve images the field of view under observation in a spectral range which...
5076543 Projection pad using liquid crystal panel  
The present invention concerns a projection pad using a liquid crystal panel in which a transmission type liquid crystal panel is placed between a light source and a screen, and an image displace...
5054891 Liquid crystal shutter with substrates having an optical anisotropy caused by temperature gradient  
A liquid crystal shutter comprising a light source, a liquid crystal element including a pair of substrates and liquid crystal interposed between the substrates, a pair of polarizing plates formed...
4999619 Electro-optic display device for use in the reflection mode  
Liquid crystal display device (1) based on dielectric anisotropy in such thin layers that the effective optical path length difference between the two optical states is 1/2λ 0 after reflection. A...
4950072 Presentation device for overhead projector  
A presentation device for an overhead projector of this invention includes a frame-shaped casing, a transmissive-type liquid crystal panel fixed in the casing, first and second protective covers...
4946263 Optical device with dielectric heating  
In an optical device containing material which is dielectric wherein the device is switchable between an inactive relatively opaque state and an activated relatively transparent state in response...
4945349 Liquid crystal display  
In a liquid crystal display, a shade frame (9) is provided between a light source (1) and a filter (41) in order to shade heat coming from the light source (1) toward the filter (41).
4907859 Liquid crystal device and image forming apparatus utilizing liquid crystal device  
An image forming apparatus comprising: a light signal generator which comprises an exposure light source and a light-path switching means capable of interrupting the transmission of light rays at...
4893904 Liquid crystal light shutter  
An arrangement of the liquid crystal light shutter wherein its liquid crystal matter is two-frequency-driven by signals (or waveforms) in which frequencies (f H and f L ) higher and lower than a...
4781441 Method of controlling orientation of liquid crystal, device used therein and liquid crystal device produced thereby  
Orientation of a liquid crystal is controlled by first forming a phase boundary of the liquid crystal between a monoaxially anisotropic phase where the liquid crystal molecules are aligned in one...
4775221 Method of and apparatus for controlling temperature of a liquid crystal cell  
Operating temperature of a liquid crystal cell is controlled by passing heated air on its surface, the heater for the air being operated according to the average temperature of the cell measured by...
4773735 Fast warm-up heater for liquid crystal display  
A solid state device such as a liquid crystal display (LCD 11) is provided with fast warm up characteristics by using an internal heater (31). The internal heater (31) preferably is located on a...
4763992 Smectic liquid crystal device with temperature control system  
An image forming apparatus comprising: a light signal generator which comprises an exposure light source and a light-path switching means capable of interrupting the transmission of light rays at...
4750814 Anti-dazzle system for a window glass of a motor vehicle  
An anti-dazzle system for a window glass of a motor vehicle, wherein at least either one of the front and rear surfaces of the window glass embedding an electric wire is provided with a film layer...
4723835 Heater control apparatus for liquid crystal display with integral heater  
A heater control circuit for the integral heater of a liquid crystal display comprising solid state switches that simultaneously connect and disconnect the high side and low side of the heater from...
4643525 Transflective liquid crystal display with integral heating unit  
A heated transflective liquid crystal display device has the heating element positioned behind the transflector to keep the heater out of the reflective light path. This construction significantly...
4427888 Infrared imaging system  
An infrared imaging system is disclosed which provides a two-dimensional visible image of the temperature profile of a radiating infrared source remotely located from the system. The invention is...
4368963 Multicolor image or picture projecting system using electronically controlled slides  
A large image or picture system includes a flat screen, on which is projected pictures from three small liquid crystal display panels behind or in front of which are disposed respectively three...
4328493 Liquid crystal color displays  
A liquid crystal color display comprises a cathode ray tube which emits at two or more wavelengths, a liquid crystal cell, a neutral analyzer and two color selective polarizers. The cell is...
4294524 Image or picture projecting system using electronically controlled slides  
A large system includes a flat cinema screen on which is projected pictures from a small transparent liquid crystal display (LCD) pattern panel. A light source is provided behind the pattern panel...
4206501 Apparatus and methods for back illuminating a display surface  
An apparatus for back lighting a display surface of a liquid crystal display includes a light source and a diffusing backplate interposed between the light source and the display. The diffusing...
4128311 Heater control method for liquid crystal devices  
A nematic liquid crystal display device exhibits dielectric anisotropy when the device is in a normal operating temperature range. By placing electrodes on either side of the layer of liquid...
4122524 Sale computing and display package for gasoline-dispensing apparatus  
Sale computing and display apparatus for gasoline-dispensing equipment utilizing a rotatable shaft for metering the amount of gasoline dispensed and a unit price adjusting mechanism cooperating...
4119842 Heater control system for liquid crystal device  
A twisted nematic liquid crystal device contains a liquid crystal material having dielectric anisotropy Δε which is positive for certain values of temperature and frequency of an electrical...
4118112 Method for reducing power dissipation in tapered resistor devices  
A tapered resistor device which includes generally a tapered resistive film comprising a semiconducting material or other suitable material with a negative temperature coefficient of resistivity is...
4093355 Symmetrical internal heater for liquid crystal display  
A liquid crystal cell having an internal resistance-type heating means for rapid cell warm-up, and for maintaining the cell at a predetermined temperature while it is operating as a visual display....
4029393 Integrated thermally compensated liquid crystal display device  
A reflective mode liquid crystal cell having an integral self-actuating heater for maintaining a liquid crystal material in the cell above a temperature at which it solidifies. In this cell, the...
3723739 WATER-COOLED CHOLESTERIC LIQUID CRYSTAL INFRARED IMAGING DEVICE  
An infrared imaging device for the detection and measurement of hazardous radiances in a laser beam caused by atmospheric scintillation. The 10.6 micrometer field is displayed visibly through the...
3663086 OPTICAL INFORMATION STORING SYSTEM  
An optical information storing system comprises a thin photoconductive film and a thin film of a mixture of nematic liquid crystal and dichroic dye, placed side by side between two transparent...
3637291 DISPLAY DEVICE WITH INHERENT MEMORY  
A visual display device utilizing encapsulated liquid crystals as the image-containing medium, the encapsulated liquid crystals evidencing two chromatic states; i.e., a first translucent state and...
3551026 CONTROL OF OPTICAL PROPERTIES OF MATERIALS WITH LIQUID CRYSTALS  
Matches 151 - 192 out of 192 < 1 2 3 4