LCD


Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Acronyms, Wikipedia.

LCD

(electronics)

LCD

LCD

(Liquid Crystal Display) A screen display technology developed in 1963 at the David Sarnoff Research Center in Princeton, NJ. How LCDs work is quite amazing. Sandwiched between polarizing filters and glass panels, rod-shaped molecules of liquid crystals flow like water and bend light like crystal. The overwhelming majority of TVs and computer screens are LCD (see LED TV). Mobile devices are also LCD but are switching to organic LED (OLED), which is increasingly becoming mainstream (see OLED). See liquid crystal.


Seven-Segment LCD Watch
Because it took so little power to move crystal molecules, LCD wristwatches and other monochrome LCD displays began to flourish in the late 1970s. By the 1990s, color LCDs helped laptop sales boom, and LCD computer monitors outsold CRTs for the first time in 2003. (Image courtesy of the private collection of Peter Wenzig.)


Twisting and Straightening
The center segment of the "8" in the seven-segment display above shows how liquid crystal molecules twist to let light flow through (image courtesy of LXD, Inc.). Seven-segment displays are the simplest LCDs. All video screens use pixels made up of three LCD subpixels with light shining through color filters. For example, in a 4K TV set, there are 24 million subpixel segments. For a more in-depth explanation, see LCD example and LCD subpixels.

Reflective Vs. Backlit
In low-cost calculators and readouts, a reflector bounces ambient light back to the viewer (bottom of illustration). However, reflective displays may be unreadable in dim light. With backlit LCDs, a light below the reflector beams toward the viewer for a bright screen indoors (see transmissive LCD). Passive displays may be reflective or backlit, but active matrix TV and computer screens are always backlit (see LCD types and LED TV). See flat panel display, LCD vs. plasma, LCoS and indium.


Seven-Segment LCD Watch
Because it took so little power to move crystal molecules, LCD wristwatches and other monochrome LCD displays began to flourish in the late 1970s. By the 1990s, color LCDs helped laptop sales boom, and LCD computer monitors outsold CRTs for the first time in 2003. (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).
References in periodicals archive ?
All Olevia 3, 5 and 7 Series LCD TVs feature new industry-leading technology innovations engineered by Syntax-Brillian to perfect video quality.
Recognizing the need to develop a small-sized SOG LCD of superior picture quality, we at NEC LCD Technologies have striven for many years to enhance our SOG technology, one of our core competences, to enable a model that fulfills the needs of the industrial field.
Residing in the E5's embedded programmable logic, a royalty-free graphics controller IP module is parameterizable to drive any single scan passive LCD display panel.
For the lucrative DID market, the company will demonstrate several products that enable system designers to mount giant LCD panels adjacent to each other with minimal distance separating the display's active viewing area.
Philips LCD will demonstrate its full line-up of 37-, 42-, 47- and 52-inch full high definition (1920 x 1080, two mega pixels) widescreen panels for HDTVs.
Philips LCD will supply approximately 700,000 panels to Syntax-Brillian in 2007 for the manufacture of increasingly popular Olevia LCD TVs for global distribution as well as LCD displays.
Philips LCD (NYSE:LPL)(KRX:034220), today made the following statement:
Ltd ("PSTS") entered into a contract with Samsung Electronics LCD (Suzhou) (SELS) in November 2006 to provide LCD TV sources.
com/reports/c45475) has announced the addition of the Global Sources report: China Sourcing Report: LCD Modules to their offering.
Philips LCD (NYSE:LPL)(KRX:034220), a leading innovator of thin-film transistor liquid crystal display (TFT-LCD) technology, opened its first customer service center in the United States in San Diego, California.
com/reports/c44948) has announced the addition of Medium-Small Sized LCD and OLED Drive IC Industry Study, 2005-2006 to their offering.
Modern Production Facility Capable of Producing More Than 200,000 LCD and LCoS[TM] Olevia Brand TVs Annually for North American Distribution