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Automatic Liquid Crystal Test Systems
ALCT Selection Guide
ALCT Hardware Specifications
Ion Resistivity VHR RDC
LC material and display manufacturers
State of the art electronics
Measure ion density, LC resistivity, voltage holding ratio and residual DC
Rotational viscosity of negative dielectric nematics
Facilitates difficult to determine measurements
ALCT-EO1-V is an advanced electro-optical characterizing system for display devices. It offers a wide array of uses including measuring transmittance, reflectance, contrast, and color temperature characters relative to viewing angles. The built-in 5-axis goniometer and the 2 motorized axes make it a smart choice for those users looking for a fast and accurate device.
Convenient sample loading
Built-in Fabry-Perot Interferometer
Compatible with most common LC cell models
Easy-to-use software measures cell gap with high accuracy
Liquid crystal electro-optic property measurements including transmittance-voltage curve and optical switching time
Include light source, optical mechanism, etc, and temperature control(optional).
General purpose physical properties
Measure (+) and (-) nematic liquid crystals
Measure bend and splay elastic parameters K11 and K33
Measure threshold voltage and dielectric constants
measure parameters of liquid crystal materials
See pdf file for details
A general purpose instrument for resistivity measurement
A large measurement range up to 1016Ω•cm
Scalable to 8 channels
Academic model of ALCT-PP1
Ferroelectric liquid crystal module
Optional photodetector support
Measure (+) and (-) dielectric nematic liquid crystals
INSTEC LC Cells are sourced from various LC Cell manufacturers
Parallel, anti-parallel, 90° twist cells
IPS parallel and perpendicular cells
Homeotropic (vertically aligned) cells
ITO patterned (no alignment layer) cells
Non-PI cells for blue phase LC
Guarding electrode cells to minimize parasitic capacitance
Easily apply electrical field to LC cells
Two coaxial BNC connectors
multiple models for use with different LC cell structures
Use with any side-loading stage ie. HCS302
Perfect for use with INSTEC ALCT instruments
Temperature range: -196°C to 120°C* (model dependent)
The TP102LC4 allows temperature-controlled Automatic Liquid Crystal Testing (ALCT) measurements to be made with low electrical noise and low leakage. Four cells can be loaded into the TP102LC4 for properties testing while maintaining a constant chamber temperature (opening the lid between samples is not required). This chamber is designed specifically for use with Instec’s S-type and SG-type LC cells. When used together with guarding cells (SG-type), a voltage can be applied to the guarding electrode to reduce parasitic capacitance and enhance measurement accuracy
Compact thermoelectric stage for LC cells
-30°C to 120°C without cryogens
Integrated electrical contacts for S and SG cells
Semi-gastight chamber
Ideal for K22 Measurments with ALCT
A table-top rubbing device for creating LC Cell prototypes. Easy to use rubbing device to create unique LC Cell structures.
Passive LCFS for filling up to 3 LC cells at one time (cells with 2 open ends)
LCVCH Vacuum filling chamber for LC cells with single opening, optional heating upgrade is available