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  2. Photoalignment - Wikipedia

    en.wikipedia.org/wiki/Photoalignment

    Photoalignment is a technique for orienting liquid crystals to desired alignment by exposure to polarized light and a photo reactive alignment chemical. [1] It is usually performed by exposing the alignment chemical ('command surface') to polarized light with desired orientation which then aligns the liquid crystal cells or domains to the exposed orientation.

  3. Homeotropic alignment - Wikipedia

    en.wikipedia.org/wiki/Homeotropic_alignment

    Homeotropic alignment often appears in the smectic A phase (S A). In discotic liquid crystals homeotropic alignment is defined as the state in which an axis of the column structure, which is formed by disc-like liquid crystalline molecules, aligns perpendicularly to a substance. In other words, this alignment looks like a state in which columns ...

  4. Liquid optically clear adhesive - Wikipedia

    en.wikipedia.org/wiki/Liquid_optically_clear...

    Optical bonding, including LOCA and non-liquid OCA tape, are used in a wide range of electronic equipment, especially those with touch panels.The adhesive bonds the touch panel to the main liquid crystal display, and also bonds any protective cover, such as the lens, to the touch panel.

  5. Liquid-crystal display - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_display

    A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers to display information. Liquid crystals do not emit light directly [1] but instead use a backlight or reflector to produce images in color or monochrome. [2]

  6. Homogeneous alignment - Wikipedia

    en.wikipedia.org/wiki/Homogeneous_alignment

    In liquid crystals homogeneous alignment, sometimes called planar alignment, is the state of alignment where molecules align in parallel to a substrate. The opposite method is homeotropic alignment. [1] For planar alignment - polyimides can be used. One of the popular ones is PI-2555.

  7. LCD classification - Wikipedia

    en.wikipedia.org/wiki/LCD_classification

    Liquid crystals with low molecular weight can be mixed with high molecular weight polymers, followed by phase-separation to form a kind of spongy matrix filled with LC droplets. An external electric field can align the LC to match its index with that of the polymer matrix, switching that cell from a milky (scattering) state to a clear ...

  8. Columnar phase - Wikipedia

    en.wikipedia.org/wiki/Columnar_phase

    The columnar phase is a class of mesophases in which molecules assemble into cylindrical structures to act as mesogens.Originally, these kinds of liquid crystals were called discotic liquid crystals or bowlic liquid crystals [1] because the columnar structures are composed of flat-shaped discotic or bowl-shaped molecules stacked one-dimensionally.

  9. Liquid crystal - Wikipedia

    en.wikipedia.org/wiki/Liquid_crystal

    Liquid crystal lenses are a kind of adaptive optics. Imaging systems can benefit from focusing correction, image plane adjustment, or changing the range of depth-of-field or depth of focus. The liquid crystal lense is one of the candidates to develop vision correction devices for myopia and presbyopia (e.g., tunable eyeglass and smart contact ...

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