Class   349	LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS
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LIQUID CRYSTAL SYSTEM

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. (1 indent ) Liquid crystal for recording or imaging on photosensitive medium

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.. (2 indent ) Printer or print bar

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.. (2 indent ) Exposure device for lithography

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. (1 indent ) Projector including liquid crystal cell (s)

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.. (2 indent ) Overhead projector

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.. (2 indent ) Video/motion picture projector

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.. (2 indent ) Plural light path projectors

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... (3 indent ) Having light separated into S and P polarization

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... (3 indent ) Wherein liquid crystal cells include microencapsulated or polymer dispersed liquid crystal

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. (1 indent ) Heads-up display

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. (1 indent ) Liquid crystal writing tablet

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. (1 indent ) Liquid crystal eyewear (glasses, goggles, etc.)

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.. (2 indent ) For protection

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. (1 indent ) Stereoscopic

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. (1 indent ) Liquid crystal window

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. (1 indent ) Computational system employing liquid crystal element (neural network, correlation device, optical computer)

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. (1 indent ) Variable or rotatable retarder used with other retarders to produce filtering effects (Solc, Lyot, Partial)

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PARTICULAR EXCITATION OF LIQUID CRYSTAL

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. (1 indent ) Thermal excitation

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.. (2 indent ) By heating electrode

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.. (2 indent ) By light beam heating (e.g., IR, laser, etc.)

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. (1 indent ) Magnetic or pressure excitation

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. (1 indent ) Optical excitation

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.. (2 indent ) With photoconductive layer (e.g., spatial light modulator(SLMs))

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... (3 indent ) Of an alloy of S, Se, or Te

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... (3 indent ) With silicon photoconductive layer

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.... (4 indent ) With silicon photodiode, N-I-N photoconductor structure, or P-I-P photoconductor structure

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... (3 indent ) With particular light blocking layer for separating read and write lights

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... (3 indent ) With particular dielectric mirror for spatial light modulator (i.e., SLM)

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. (1 indent ) Electron beam excitation

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. (1 indent ) Plasma excitation

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. (1 indent ) Electrical excitation of liquid crystal (i.e., particular voltage pulses, AC vs. DC, threshold voltages, etc.)

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.. (2 indent ) With application of holding or bias voltage (i.e., voltage which does not change the optical state of the liquid crystal)

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.. (2 indent ) For driving Grandjean to focal conic or dynamic scattering type liquid crystal

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.. (2 indent ) Including diverse driving frequencies

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.. (2 indent ) Polarity based driving

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.. (2 indent ) With supplemental capacitor

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... (3 indent ) In active matrix with separate dedicated capacitor line

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.. (2 indent ) With antistatic elements

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.. (2 indent ) With particular switching device

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... (3 indent ) Transistor

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.... (4 indent ) Structure of transistor

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....• (5 indent ) With light block conductively connected to transistor

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....• (5 indent ) Transferred transistor

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....• (5 indent ) With particular gate electrode structure

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....•. (6 indent ) With gate electrode between liquid crystal and semiconductor layer

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.... (4 indent ) Plural nonredundant transistors per pixel

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... (3 indent ) Two terminal nonlinear switching device (e.g., N-I-N, S-I-S, Ferroelectric, etc.)

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.... (4 indent ) Diode

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.... (4 indent ) Metal-insulator-metal (i.e., MIM)

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....• (5 indent ) With particular insulating layer

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.... (4 indent ) Varistor

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.. (2 indent ) Matrix including additional element (s) which correct or compensate for electrical fault

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... (3 indent ) Laser links

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PARTICULAR STRUCTURE

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. (1 indent ) Lens or prism separate from projection system (i.e., it is not integral part of illumination system)

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. (1 indent ) Holder, support, frame, or housing

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.. (2 indent ) Including electromagnetic shielding

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.. (2 indent ) Including resilient support member

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. (1 indent ) Particular illumination

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.. (2 indent ) With integral optical element for guiding or distributing light from the light source

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... (3 indent ) Specifically for guiding light in a front-lit device

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... (3 indent ) Diffuser between light source and liquid crystal

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... (3 indent ) Edge lit type light guide behind liquid crystal

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... (3 indent ) Louvres

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... (3 indent ) Reflector having particular shape behind light source

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.. (2 indent ) With plural diverse light sources (e.g., for day and night)

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.. (2 indent ) Electroluminescent light source

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.. (2 indent ) Fluorescent light source

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... (3 indent ) Formed of planar phosphor or fluorescent layer separate from illumination source

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. (1 indent ) Detector of liquid crystal temperature

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. (1 indent ) Interconnection of plural cells in parallel (e.g., edge to edge)

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. (1 indent ) Interconnection of plural cells in series

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.. (2 indent ) For compensation of birefringence effects

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... (3 indent ) Of twisted (or chiral) nematic or supertwisted nematic liquid crystal

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.. (2 indent ) With particular cooperation between cells (e.g., alternating selection or simultaneous selection of cells)

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... (3 indent ) Cell cooperation providing multicolor display

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.... (4 indent ) With color formed by different dye in each cell

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.... (4 indent ) With color formed by different color polarizer or color filter associated with each cell

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... (3 indent ) With cells being substantially identical and driven simultaneously, providing improved contrast

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... (3 indent ) With projection of electrodes in one cell substantially nonoverlapping that of another cell (i.e., for improving resolution)

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... (3 indent ) With each cell displaying a different pattern

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. (1 indent ) Having significant detail of cell structure only

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.. (2 indent ) Producing a greyscale effect

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.. (2 indent ) Microencapsulated or polymer dispersed liquid crystal

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... (3 indent ) For variable polarizer

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... (3 indent ) Polymer network liquid crystal

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... (3 indent ) With particular encapsulating medium

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.... (4 indent ) With second material between liquid crystal and encapsulating medium

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.... (4 indent ) With nonpolymer encapsulating medium

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... (3 indent ) Formed by particular technique

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.... (4 indent ) Having UV polymerized element

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.... (4 indent ) Formed with particular alignment technique

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.. (2 indent ) Microlenses

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.. (2 indent ) Polarizer

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... (3 indent ) Color

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... (3 indent ) Circular

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... (3 indent ) With particular non-zero angle between polarization axis and orientation direction

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.... (4 indent ) For ferroelectric liquid crystal

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.... (4 indent ) For supertwisted nematic liquid crystal

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... (3 indent ) With particular non-zero angle between polarization axis and compensator optical axis

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... (3 indent ) With particular non-zero and non-90 angle between opposite polarization axes

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.. (2 indent ) Filter

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... (3 indent ) Interference filter

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... (3 indent ) Color filter

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.... (4 indent ) With different liquid crystal thickness for each color of filter

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.... (4 indent ) With plural colors for each display element (i.e., each pixel or segment)

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.... (4 indent ) With unequal areas for different colors or with fractional shift between one line of colors and the next

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... (3 indent ) Opaque mask or black mask

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.... (4 indent ) Conductive mask

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.. (2 indent ) Diffuser (on viewer side of liquid crystal)

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.. (2 indent ) Reflector

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... (3 indent ) Dielectric mirror (i.e., in devices excited other than by photoconductive layer) or transflector

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... (3 indent ) Cholesteric reflector

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.. (2 indent ) Photoconductive element (i.e., not used for exciting)

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.. (2 indent ) Compensator or retarder (i.e., not using liquid crystal cell)

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... (3 indent ) With refractive indices in the x, y, and z directions

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... (3 indent ) Multiple compensators

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.... (4 indent ) Including at least one with negative intrinsic birefringence

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... (3 indent ) With particular non-zero angle between compensator optical axis and orientation direction

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.. (2 indent ) Particular nonoptical film or layer (e.g., adhesive layer, barrier layer)

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... (3 indent ) Alignment layer

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.... (4 indent ) Formed by particular technique (e.g., Langmuir Blodgett, stretching, etc.)

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....• (5 indent ) Having particular deposited structure (e.g., angled, plural layered) produced by vapor deposition

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....• (5 indent ) Having structure produced by rubbing under particular rubbing conditions (e.g., particular direction, rubbing force, by using named rubbing material or roller, etc.)

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.... (4 indent ) Formed of a liquid crystal material

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.... (4 indent ) With different alignments on opposite substrates

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.... (4 indent ) With plural alignments on the same substrate

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.... (4 indent ) For perpendicular alignment

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....• (5 indent ) Silanes

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.... (4 indent ) For parallel alignment

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....• (5 indent ) With chiral smectic liquid crystal (includes ferroelectric liquid crystal)

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....•. (6 indent ) With particular pretilt angle from the alignment layer

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....•. (6 indent ) With particular polymer composition of the alignment layer (e.g., fluorine- containing aliphatic polyamide)

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....• (5 indent ) With particular pretilt angle (i.e., with liquid crystal other than chiral smectic)

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... (3 indent ) Antireflection layer

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... (3 indent ) Insulating layer

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.. (2 indent ) Electrode or bus detail (i.e., excluding supplemental capacitor and transistor electrodes)

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... (3 indent ) Formed of semiconductor material

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... (3 indent ) Interdigited (comb-shaped) electrodes

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... (3 indent ) Segmented or fixed pattern

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... (3 indent ) Matrix electrodes

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.... (4 indent ) Split pixels

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.... (4 indent ) Nonrectilinear rows and columns

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.... (4 indent ) Nonrectangular (odd) shaped pixels

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.... (4 indent ) Multilayer electrodes

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.... (4 indent ) Resistance reducing electrodes

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... (3 indent ) Having connection detail to external circuit

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.... (4 indent ) Featuring flexible circuit (i.e., tape automated bonding (TAB), etc.)

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.... (4 indent ) With driving circuit having input and output electrodes on liquid crystal substrate

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.... (4 indent ) With detail of terminals to external circuit

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.. (2 indent ) Liquid crystal seal

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... (3 indent ) With particular injection port or injection plug

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.. (2 indent ) Spacer

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... (3 indent ) Formed as walls (e.g., between pixels) or integral with substrate

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... (3 indent ) Plural types in single liquid crystal cell

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.. (2 indent ) Substrate

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... (3 indent ) Fiberoptic faceplate

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... (3 indent ) With particular topology (i.e., other than for diffraction and spacers)

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.. (2 indent ) Heating or cooling element other than for exciting

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.. (2 indent ) Dual function layer or element

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.. (2 indent ) Nonchiral additive in the liquid crystal material

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... (3 indent ) Fluorescent additive

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... (3 indent ) Pleochroic dye

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... (3 indent ) Nonspacer particles significantly smaller than liquid crystal thickness (e.g., scattering centers, ferromagnetic particles, etc.)

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WITH SPECIFIED NONCHEMICAL CHARACTERISTIC OF LIQUID CRYSTAL MATERIAL

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. (1 indent ) Utilizing change between diverse phases (e.g., cholesteric to nematic)

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. (1 indent ) Utilizing change within liquid crystal phase (e.g., Grandjean to focal conic, etc.)

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. (1 indent ) Utilizing reversal in sign of dielectric anisotropy

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. (1 indent ) Within smectic phase

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.. (2 indent ) Within chiral smectic phase (includes ferroelectric)

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... (3 indent ) Greyscale resulting from liquid crystal property other than solely Smectic A

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... (3 indent ) Antiferroelectric

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. (1 indent ) Within cholesteric phase

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.. (2 indent ) Using reflection characteristic

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. (1 indent ) Within nematic phase

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.. (2 indent ) Negative dielectric anisotropy only

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.. (2 indent ) Twisted (or chiral) nematic or supertwisted nematic

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... (3 indent ) Having particular parameter of twist

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... (3 indent ) Having particular birefringence or retardation

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CELL CONTAINING LIQUID CRYSTAL OF SPECIFIC COMPOSITION

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. (1 indent ) Polymer liquid crystal

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. (1 indent ) In smectic phase

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. (1 indent ) In cholesteric phase

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. (1 indent ) In nematic phase

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NOMINAL MANUFACTURING METHODS OR POST MANUFACTURING PROCESSING OF LIQUID CRYSTAL CELL

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. (1 indent ) Changing liquid crystal phase

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. (1 indent ) Injecting liquid crystal

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. (1 indent ) Sealing of liquid crystal

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. (1 indent ) Aligning liquid crystal with means other than alignment layer

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. (1 indent ) Defect correction or compensation

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LIQUID CRYSTAL OPTICAL ELEMENT

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. (1 indent ) Passive liquid crystal polarizer

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. (1 indent ) Antidazzle mirror formed from liquid crystal cell

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. (1 indent ) Beam dividing switch formed from liquid crystal cell

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.. (2 indent ) Including passive liquid crystal switch portion

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. (1 indent ) Liquid crystal etalon

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. (1 indent ) Liquid crystal sensors (e.g., voltmeters, pressure sensors, temperature sensors)

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. (1 indent ) Liquid crystal lenses other than for eyewear

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. (1 indent ) Liquid crystal diffraction element

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.. (2 indent ) For beam steering

	FOREIGN ART COLLECTIONS

FOR000

CLASS-RELATED FOREIGN DOCUMENTS

Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived.

UTILIZING A LIQUID CRYSTAL MATERIAL (359/36)

FOR100

. (1 indent ) With particular illumination (359/48)

FOR101

.. (2 indent ) Having optical element (e.g., curved reflector behind light source, etc.) (359/49)

FOR102

.. (2 indent ) Fluorescent light (e.g., FLAD type) (359/50)

FOR103

. (1 indent ) Microencapsulated liquid crystal (359/51)

FOR104

.. (2 indent ) With particular encapsulating medium (359/52)

FOR105

. (1 indent ) Plural contiguous cells (359/53)

FOR106

. (1 indent ) Having electrodes arranged into rows and columns (359/54)

FOR107

.. (2 indent ) With liquid crystal electrode excitation (359/55)

FOR108

... (3 indent ) For ferroelectric liquid crystal (359/56)

FOR109

... (3 indent ) With particular switching device (359/57)

FOR110

.. (2 indent ) With particular switching device (359/58)

FOR111

... (3 indent ) Transistor (359/59)

FOR112

... (3 indent ) Diode (359/60)

FOR113

. (1 indent ) Having particular nonelectrical detail of cell structure enclosing or adjacent liquid crystal material (359/62)

FOR114

.. (2 indent ) Polarizer (359/63)

FOR115

... (3 indent ) Color (359/64)

FOR116

... (3 indent ) Circular (359/65)

FOR117

.. (2 indent ) Diffuser (359/69)

FOR118

... (3 indent ) Dielectric mirror or transflector (359/71)

FOR119

.. (2 indent ) Particular nonoptical film or layer (e.g., adhesive layer, barrier layer, etc.) (359/74)

FOR120

... (3 indent ) Alignment layer (359/75)

FOR121

.... (4 indent ) Formed by particular technique (e.g., vapor deposition, rubbing, etc.) (359/76)

FOR122

.... (4 indent ) For perpendicular alignment (359/77)

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.... (4 indent ) For parallel alignment (359/78)

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.. (2 indent ) Substrate (359/82)

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.. (2 indent ) Holder, support, or frame (359/83)

FOR126

. (1 indent ) With specified electrode excitation characteristic of liquid crystal material (359/84)

FOR127

.. (2 indent ) Provided by particular circuit (359/85)

FOR128

. (1 indent ) With detector of liquid crystal temperature (359/86)

FOR129

. (1 indent ) Electrode detail (359/87)

FOR130

.. (2 indent ) Reversal in sign of dielectric anisotropy (359/92)

FOR131

. (1 indent ) Birefringers effect (359/93)

FOR132

. (1 indent ) Variable index of refraction (359/94)

FOR133

. (1 indent ) Variable diffraction (359/95)

FOR134

. (1 indent ) Variable absorption of light due to an additive in the liquid crystal material (359/96)

FOR135

.. (2 indent ) Flurescent additive (359/97)

FOR136

.. (2 indent ) Pleochroic dye (359/98)

FOR137

. (1 indent ) With specified nonchemical characteristic of liquid crystal material (359/99)

FOR138

.. (2 indent ) Within smectic phase (359/100)

FOR139

.. (2 indent ) Within cholestric phase (359/101)

FOR140

.. (2 indent ) Within nematic phase (359/102)

FOR141

. (1 indent ) Cell containing liquid crystal of specified composition (359/103)

FOR142

.. (2 indent ) In smectic phase (359/104)

FOR143

.. (2 indent ) In cholesteric phase (359/105)

FOR144

.. (2 indent ) In nematic phase (359/106)

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