| ReturnTo Theme-Group-Choice | Onelevelup |
| 2H088 | LIQUID CRYSTAL 1 (APPLICATIONS AND PRINCIPLES) | |
| G02F1/13 -1/13,102;1/13,505;1/137-1/141 | ||
| G02F1/13;1/13,102;1/13,505;1/137-1/141 | EA | EA00 APPLICATION OF LIQUID CRYSTAL |
EA01 | EA02 | EA03 | EA05 | EA06 | EA07 | EA08 | EA10 | ||
| . Special uses as display elements | . . Liquid crystal displays | . . . Modular displays | . . . Three-dimensional displays | . . . . wherein Images for the right and left eyes are alternately arranged | . . . . wherein Images for the right and left eyes are alternately switched | . . . . having panels for the right and left eyes | . . . Head-mounted displays (HMD) | |||||
| EA12 | EA13 | EA14 | EA15 | EA16 | EA17 | EA18 | EA19 | EA20 | ||||
| . . . Projection type displays | . . . . with single liquid crystal panel | . . . . with multiple liquid crystal panels | . . . . accommodating to colourising | . . . . with reflective liquid crystal panels | . . . . with writing type liquid crystal panels | . . . . synthesised on-screen | . . . . Structures for holding components or for adjusting position thereof | . . . . Special methods of use | ||||
| EA22 | EA23 | EA25 | EA27 | |||||||||
| . . Uses in specific fields (*) | . . . for vehicles e.g. cars or aircrafts | . . . for cameras | . . . for desk calculators or time-pieces | |||||||||
| EA31 | EA32 | EA33 | EA34 | EA35 | EA36 | EA37 | EA38 | EA39 | EA40 | |||
| . Special uses as optical control elements | . . Adjustment of the amount of light | . . . Light control filters or shutters | . . . . Light control windows curtains or blinds | . . . . for glasses or masks | . . . Antiglare mirrors | . . . Spatial light amount modulators | . . . . Diaphragms | . . . . Exposure masks or data transfer | . . . . Shutter arrays | |||
| EA42 | EA44 | EA45 | EA46 | EA47 | EA48 | EA49 | ||||||
| . . Adjustable focal points | . . Light modulation | . . . Light deflectors | . . . Optical demultiplexers | . . . Control of phases or polarisation | . . . Holograms or diffraction gratings | . . . Wavelength or frequency filters | ||||||
| EA51 | EA52 | EA53 | EA55 | EA56 | EA57 | |||||||
| . Special uses as sensor elements | . . Pattern measurement | . . . Visualisation of electromagnetic field patterns | . . Measurement of quantities | . . . Electromagnetic fields | . . . Temperature | |||||||
| EA61 | EA62 | EA63 | EA64 | EA65 | EA67 | EA68 | ||||||
| . Other special uses (*) | . . Information recording media e.g. memories | . . Optical Image calculators | . . Electric elements | . . Decoration | . Peripheral devices | . . Temperature control devices e.g. heating or cooling | ||||||
| FA | FA00 MANUFACTURING METHOD OF LIQUID CRYSTAL CELL NOT CHARACTERISED BY STRUCTURE |
FA01 | FA02 | FA03 | FA04 | FA05 | FA06 | FA07 | FA08 | FA09 | FA10 | |
| . Processes of laminating a pair of substrates | . . Formation of spacers | . . Coating with sealants e.g. sealing or blocking of filling holes | . . Means of sealing e.g. sealing or blocking of filling holes | . Cutting processes | . . Cutting positions or patterns | . . Cutting methods | . Processes for forming liquid crystal layers | . . Formation of liquid crystal layers before laminating a pair of substrates | . . Injection of liquid crystals after laminating a pair of substrates | |||
| FA11 | FA12 | FA13 | FA14 | FA15 | FA16 | FA17 | FA18 | FA19 | FA20 | |||
| . Inspections testing evaluation or correction or removal of defects | . . Inspections or evaluation of Image quality | . . Pixel defects or checking of operation | . . Correction or removal of defects | . . . Laser trimming | . Alignment | . Conveying holding or storing | . Other secondary processes | . . Modification of shapes or processes | . . Processes for uniformising e.g. cell thickness or orientation | |||
| FA21 | FA22 | FA23 | FA24 | FA25 | FA26 | FA27 | FA28 | FA29 | FA30 | |||
| . . Washing or drying | . . Processing of liquid crystal materials e.g. refinement or removal of bubbles | . . Other processes of removal excluding removal of pixel defects | . Mass production or continuous processes | . . Recording of continuous processes or progress thereof | . . Production of multiple units | . . . continuously connected cells | . . Processing of multiple cells e.g. simultaneous processing or batch processing | . Resin substrates | . Apparatuses work-tables or tools | |||
| GA | GA00 STRUCTURE OR MATERIAL OF LIQUID CRYSTAL LAYER |
GA01 | GA02 | GA03 | GA04 | GA06 | GA08 | GA10 | ||||
| . Types of liquid crystal materials | . . having nematic phases | . . having cholesteric phases | . . having smectic phases | . . Polymer liquid crystals | . . Mixtures of liquid crystals with different properties e.g. different phases or inverse twists | . Dispersed liquid crystals | ||||||
| GA11 | GA12 | GA13 | GA14 | GA15 | GA17 | GA18 | GA19 | |||||
| . Additives to liquid crystal layers | . . Light absorbing materials or luminous materials | . . . Dichroic dyes or pleochroic dyes | . . . Fluorescent materials | . . . Photoisomerised materials | . . Chiral materials or optically rotatory materials | . . Electrical materials e.g. conductive materials | . . Adsorbents or moisture absorbents | |||||
| HA | HA00 ASSOCIATION WITH OTHER COMPONENTS |
HA01 | HA02 | HA03 | HA04 | HA05 | HA06 | HA07 | HA08 | HA09 | HA10 | |
| . Substrates | . Conductors or electrodes | . Alignment members | . Insulating films | . Structures for mounting | . Driving circuits or driver elements | . . Power supplies | . . Active elements or nonlinear elements e.g. thin film transistors (TFT) or metal insulator metal elements (MIM) | . . Photoconductors | . Optical elements | |||
| HA11 | HA12 | HA13 | HA14 | HA15 | HA16 | HA17 | HA18 | HA19 | HA20 | |||
| . . Wavelength selecting elements | . . . Colour filters | . . . Dichroic mirrors or prisms | . . Light shielding or light absorbing members | . . Phase plates or optical rotatory plates | . . . Phase compensation plates | . . . Quarter wavelength plates | . . Polarisation elements | . . . Colour polarising plates | . . . Polarising beam splitters | |||
| HA21 | HA22 | HA23 | HA24 | HA25 | HA26 | HA27 | HA28 | HA29 | HA30 | |||
| . . Scattering elements or reflecting elements | . . . Half mirrors | . . Prisms | . . Lenses | . . . Lens arrays | . . . . Lenticular lenses | . . . Fresnel lenses | . . Light sources | . . . Light sources for writing (*) | . . Light guides or optical fibres | |||
| JA | JA00 PRINCIPLE OF OPERATION OF LIQUID CRYSTAL |
JA01 | JA02 | JA03 | JA04 | JA05 | JA06 | JA07 | JA08 | JA09 | JA10 | |
| . Electric current effect types | . . Dynamic scattering (DS ) | . Field effect types | . . Dielectric anisotropy types | . . . Twisted nematic (TN) types | . . . Guest-host (GH) types or dichroic liquid crystal types | . . . . White-tailor or phase transition types | . . . . Stacked types | . . . Electrically controlled birefringence (ECB) types | . . . . Homeotropic types e.g. deformation of aligned phases (DAP) or vertically aligned nematic (VAN) | |||
| JA11 | JA12 | JA13 | JA14 | JA15 | JA16 | JA17 | JA18 | JA19 | JA20 | |||
| . . . . Homogeneous types | . . . . Hybrid types e.g. hybrid aligned nematic (HAN) | . . . Super-twisted birefringent types e.g. super-twisted birefringence effect (SBE) or super-twisted nematic (STN) types | . . . Phase change (PC) types | . . Using changes by electric fields of helical pitches | . . Permanent dipole types | . . . Ferroelectric types | . . . . Initial alignments being helical and parallel to substrate surfaces | . . . . Surface stabilised ferroelectric liquid crystals (SSFLC) | . . . Anti-ferroelectric types (AFLC) | |||
| JA21 | JA22 | JA23 | JA25 | JA26 | JA28 | JA29 | JA30 | |||||
| . Thermal effect types | . . Changes of liquid crystal phase or phase transition | . . Use of temperature changes of helical pitch | . Optical effect types | . . Photochemical isomerisation reaction types | . Other principles of operation | . . Pressure or vibration effect types | . . Magnetic field effect types | |||||
| KA | KA00 DEFINITION OF PARAMETER OR NUMERICAL VALUE |
KA01 | KA02 | KA03 | KA04 | KA05 | KA06 | KA07 | KA08 | KA09 | KA10 | |
| . Dimensions e.g. length size or domain size | . . Cell thickness (d) | . Optical variables | . . Wavelength dependency | . . Refractive index (n) | . . . Refractive index anisotropy (delta n) | . . Retardation (delta n * d ) | . Elasticity constant | . Density | . Molecular weight | |||
| KA11 | KA12 | KA13 | KA14 | KA15 | KA16 | KA17 | KA18 | KA19 | KA20 | |||
| . Twist angle | . Controlled pitch (p) i.e. after the cell being filled or ratio of cell thickness to controlled pitch (d/p) | . Spontaneous pitch of liquid crystal materials (q) or ratio of cell thickness to spontaneous pitch (d/q) | . Pretilt angle i.e. tilt angle relative to the substrate | . Cone angle or tilt angle between bistable states | . C-director orientation | . Angles formed between polarising axes and alignment axes or molecular axes | . Angles formed by polarisating axes between polarising plates (*) | . Physical temperature e.g. phase transition temperature or operating temperature | . . Isotropic phase transition temperature | |||
| KA21 | KA22 | KA23 | KA24 | KA25 | KA26 | KA27 | KA28 | KA29 | KA30 | |||
| . . Transition temperature from one liquid crystal phase to another | . . Glass phase transition temperature (Tg) | . . Transition temperature from Liquid crystal phase to solid phase | . Electrical or magnetic variables | . . Driving frequency | . . Positive dielectric anisotropy (delta epsilon >0 ) | . . Negative dielectric anisotropy (delta epsilon<0 ) | . . Spontaneous polarisation coefficient | . Ratios or differences between parameters | . Other parameters (*) | |||
| LA | LA00 DEFINITION RELATING TO ALIGNMENT MEMBER |
LA01 | LA02 | LA03 | LA04 | LA05 | LA06 | LA07 | LA08 | LA09 | ||
| . Random orientation treatments or nonlinear orientation treatments | . Multiple orientation treatments in the same plane | . . at the same location | . Different orientation treatments between upper and lower substrates | . . Different pretilt angles between upper and lower substrates | . Same direction of orientation treatments for upper and lower substrates i.e. parallel | . Reversed direction of orientation treatments between upper and lower substrates i.e. reverse parallel | . Directions of upper and lower orientation being non-parallel not reverse parallel or non-perpendicular | . Other restrictions relating to alignment members (*) | ||||
| MA | MA00 PURPOSE OR PROBLEM TO BE SOLVED |
MA01 | MA02 | MA03 | MA04 | MA05 | MA06 | MA07 | MA09 | MA10 | ||
| . Improved visibility (*) | . . Improved contrast | . . Higher precision | . . Prevention of variation in indication or equalisation of brightness | . . Adjustment of colour balance | . . Improved brightness clarity or tansmissivity | . . Widening of viewing angle | . Improved electrical response characteristics (*) | . . Increased response speed | ||||
| MA11 | MA12 | MA13 | MA16 | MA17 | MA18 | MA20 | ||||||
| . . Improved steepness of response curves of applied voltage and thresholds | . . Improved hysteresis characteristics | . . Gradation display half-tone display or grayscale display | . Reduced amount of materials consumed or reduced number of elements | . Equalisation of cell thickness | . Uniformisation of orientation or prevention of orientation defects | . Other purposes or problems to be solved (*) |