LCD

(redirected from nematic)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to nematic: smectic, cholesteric

LCD

(electronics)

LCD

LCD

(Liquid Crystal Display) A screen display technology developed in 1963 at the David Sarnoff Research Center in Princeton, NJ. All computer and most TV screens are LCDs (see LED TV), while mobile device screens may be LCD or organic LED (see OLED). By the 1990s, color LCDs helped laptop sales boom, and LCD computer monitors outsold CRTs for the first time in 2003. See liquid crystal, LCD types and LCD categories.


A Color Pixel
Sandwiched between polarizing filters and glass panels, rod-shaped molecules of liquid crystals flow like liquid and bend light like crystal. The liquid crystal layer is 5 to 25 micrometers thick (2 to 10/10,000" inch). For more details on color LCDs, see LCD subpixels.







Seven-Segment LCD Watch
Because it took so little power to move crystal molecules, LCD wristwatches and other monochrome screens began to flourish in the late 1970s. For more details on this type of display, see seven-segment display. (Image courtesy of the private collection of Peter Wenzig.)







LCD vs. LED
LCDs and LEDs are widely used in combination as in this printer panel. Readouts are LCDs, but the indicator lights on billions of products are LEDs. LCD TVs use LED backlights (see LED and LED TV). See LCD vs. OLED and LCD vs. plasma.
References in periodicals archive ?
Evans; A phase diagram for non-spherical molecules with spherical square wells Isotropic and nematic phases, Molecular Physics: 80 (5), 1257-1261 (1993).
Chiral nematic liquid crystals whose pitch is of the order of the wavelength of visible light reflect circularly polarized light of the same handedness as the chiral nematic phase (Chandrasekhar, 1992).
Such behavior has not yet been reported for chiral nematic films, but in a poster, D.
Next, we expressed the free energy density as a sum of the condensation nematic term [f.sub.n], elastic term [f.sub.e], external field term [f.sub.f], and surface term [f.sub.s] [12, 13]:
The authors also found the choice of doping material impacts the transition to the nematic state.
Taking stock of progress in the field, this collection describes the physics and chemistry of the biaxial nematic liquid crystal phase, characterization methods, and possible applications.
Nematic liquid crystals (NLC) molecules exhibit directional order, but are otherwise randomly positioned with fluidic properties.
Umeton, "Nonlocal optical propagation in nonlinear nematic liquid crystals," Journal of Nonlinear Optical Physics and Materials, vol.
FPDs, a category that includes both large (over 10 inches) and small/medium-sized thin film transistor-liquid crystal display (TFT-LCD) panels, organic light-emit diode (OLED) panels, TN/STN (super twisted nematic) panels, and others, accounted for NT$242.4 billion (US$8.08 billion) in production value, a 0.3% QoQ increase but a 16.7% YoY decline.
Kolev (organic chemistry, Plovdiv U., Bulgaria) and Ivanova (analytical chemistry, Sofia U., Bulgaria) offer the first book devoted to the theory and practical application of partially oriented colloidal systems in nematic liquid crystals for infrared spectroscopic and structural elucidation in an embedded chemical in the solid state.
Patent 7,794,834 (September 14, 2010), "Nematic Elastomer Fiber With Mechanical Properties of a Muscle," Jawad Naciri, Hong Jeon, Patrick N.
The author also describes the solid-state IR-LD spectra of samples of the various compounds studied as suspensions in nematic liquid crystal.