Liquid-crystal display

  • Polarizing filter film with a vertical axis to polarize light as it enters.
  • Glass substrate with ITO electrodes. The shapes of these electrodes will determine the shapes that will appear when the LCD is turned ON. Vertical ridges etched on the surface are smooth.
  • Twisted nematic liquid crystal.
  • Glass substrate with common electrode film (ITO) with horizontal ridges to line up with the horizontal filter.
  • Polarizing filter film with a horizontal axis to block/pass light.
  • Reflective surface to send light back to viewer. (In a backlit LCD, this layer is replaced with a light source.)
  • A liquid-crystal display (LCD) is a flat-panel display or other electronic visual display that uses the light-modulating properties of liquid crystals. Liquid crystals do not emit light directly.

    LCDs are available to display arbitrary images (as in a general-purpose computer display) or fixed images with low information content, which can be displayed or hidden, such as preset words, digits, and 7-segment displays as in a digital clock. They use the same basic technology, except that arbitrary images are made up of a large number of small pixels, while other displays have larger elements.

    Liquid crystal

    Liquid crystals (LCs) are matter in a state that has properties between those of conventional liquid and those of solid crystal. For instance, a liquid crystal may flow like a liquid, but its molecules may be oriented in a crystal-like way. There are many different types of liquid-crystal phases, which can be distinguished by their different optical properties (such as birefringence). When viewed under a microscope using a polarized light source, different liquid crystal phases will appear to have distinct textures. The contrasting areas in the textures correspond to domains where the liquid-crystal molecules are oriented in different directions. Within a domain, however, the molecules are well ordered. LC materials may not always be in a liquid-crystal phase (just as water may turn into ice or steam).

    Liquid crystals can be divided into thermotropic, lyotropic and metallotropic phases. Thermotropic and lyotropic liquid crystals consist of organic molecules. Thermotropic LCs exhibit a phase transition into the liquid-crystal phase as temperature is changed. Lyotropic LCs exhibit phase transitions as a function of both temperature and concentration of the liquid-crystal molecules in a solvent (typically water). Metallotropic LCs are composed of both organic and inorganic molecules; their liquid-crystal transition depends not only on temperature and concentration, but also on the inorganic-organic composition ratio.

    Podcasts:

    PLAYLIST TIME:

    Liquid Crystal

    by: System Shock

    VERSE A: Don't you wanna be a liquid crystal Make a step ahead and join the system. Don't you wanna be a liquid crystal LCD, you know, will be your system.
    VERSE B: Don't you wanna kiss my liquid crystal Speak the only words I want to listen. Have you ever felt like you are fearsome? Come to me and I will make you feel some.
    Be a part of LCD This is what we used to be
    VERSE C: Don't you wanna be my liquid crystal Your mentality is nothing this time. Your the only god is liquid crystal Your the only soul is liquid crystal.
    ENDING: Your program tells you how to glow Where to put your wire Your picture quality is low Since your bit is high




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