LCD
LCD Abbrev. for liquid-crystal display. A
flat-panel display that is incorporated in most portable computers, where it can produce a monochrome or color image. LCDs are also used in other digital instruments. Early LCDs suffered from poor contrast between light and dark combined with narrow viewing angles. Several different forms of construction now offer improved viewing characteristics.
LCD technology is based on
liquid crystals. These are common organic compounds that, between specific temperature limits, change their crystal structure to allow them to flow like a liquid.
Supertwisted nematic displays use rod-shaped (nematic) crystals. The crystals are organized between two transparent polarized layers with 90° between the directions of polarization. The crystals form a spiral between the two layers so that light can be rotated and passed through the material unchanged. When an electric field is applied, the orientation of the crystals is disturbed thus stopping the light passing. Controlling the electric field applied to each pixel results in an image. It is possible to switch modes up to 120 hertz. In consequence, by shuttering white light through colored dye filters it is possible to turn a monochrome display into a color one. The same shuttering system can be used to generate stereo images, though this is not widely available.
Supertwisted nematic displays may be
passive-matrix LCDs, containing no active (switching) electronic components. Nowadays much higher performance, especially for color displays, is obtained from
active-matrix LCDs. In this construction, a
thin-film transistor is added to each
pixel to ensure an adequate and constant drive is maintained between refresh cycles. This gives a more uniform display and wider viewing angle, though in this respect it has some way to go to match the CRT.
LCDs are expensive when compared to CRT displays of similar resolution. They also have a much lower power consumption than CRT displays but since they do not emit light they must rely on external ambient illumination or be provided with back lighting.
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Reed 'em and weep
Magazine article from: Canadian Musician; 11/1/2004; ; 700+ words
; ...through all the reeds for about five minutes. As a reed gets soaked its...you soak it the reed changes a little less. I leave the reeds to dry out one more...point I put the reeds that play (sometimes only one) into a reed keeper and start...
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Reed'em and weep [Woodwinds]
Magazine article from: Canadian Musician; 1/1/2003; ; 700+ words
; ...through all the reeds for about five minutes. As a reed gets soaked its...you soak it the reed changes a little less. I leave the reeds to dry out one more...point I put the reeds that play (sometimes only one) into a reed keeper and start...
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REED TAGS ANOTHER HOMER, PROVES LABELS WRONG.(Sports)
Newspaper article from: Rocky Mountain News (Denver, CO); 5/23/1996; ; 700+ words
; ...Randy Holtz Rocky Mountain News Staff Writer Jeff Reed's baseball career has been all about labels...Resourceful reserve with little raw ability. Now Reed has a new label: Dangerous. Reed, 33, the catcher with the eminently ordinary...
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Reed Technology Named Microsoft Certified Solution Provider
PR Newswire; 9/1/1998; 700+ words
; ...HORSHAM, Pa., Sept. 1 /PRNewswire/ -- Reed Technology and Information Services recently...Provider (MCSP). With the certification, Reed Technology is now in a position to be a...invest in Microsoft(R) technologies. Reed Technology can now take part in many benefits...
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Reed quits Christian Coalition to consult: New firm to help pro-life candidates.(A)
Newspaper article from: The Washington Times; 4/24/1997; ; 700+ words
; Ralph Reed yesterday said he would resign as executive...lobbyist, had been interviewed for Mr. Reed's job, with the understanding that his...nuts and bolts of the Coalition while Mr. Reed would fill a new position of president of...
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Reed Elsevier buys into data.
Magazine article from: DM News; 2/25/2008; ; 700+ words
; * GLOBAL PUBLISHER Reed Elsevier's plan to purchase insurance...workflow. Despite positive figures--Reed Elsevier reported $8.9 million in 2007...announced plans to sell off is division Reed Business Information (RBI), which publishes...
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Reed Smith Grows West As Crosby Heafey Merger Approved.
PR Newswire; 10/31/2002; 700+ words
; ...final approval today by the partners of Reed Smith LLP and the shareholders of California...The long-anticipated transaction gives Reed Smith LLP close to 1,000 attorneys in...strategic growth," said Gregory B. Jordan, Reed Smith's managing partner. "Until now...
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REED COMES TO PLAY
Newspaper article from: The Boston Globe; 9/9/1989; ; 700+ words
; ...with misplays and misplaced blame, Jody Reed has towered over most of his teammates. Before last night's game in Anaheim, Reed said, "There's a lot of people on this...major purge in the Red Sox clubhouse. Reed is expendable because the Sox have some...
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REED VOWS HE WON'T CHANGE HIS WAYS ON THE FIELD
Newspaper article from: The Boston Globe; 3/29/1990; ; 700+ words
; ...Fla. - Letters kept trickling into Jody Reed's mailbox, all concerning the same subject...twisted and misconstrued. The day after Reed's contract was renewed by the Red Sox...000, some $75,000 less than what Reed was seeking, he said, "If people see...
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REED HOPES BOOK WILL EXPAND REACH CHRISTIAN COALITION EXEC DETAILS GROUP'S HISTORIC MISSION.(FRONT)
Newspaper article from: The Virginian Pilot; 6/3/1996; ; 700+ words
; ...Coalition Executive Director Ralph E. Reed Jr.: A two-page exclusive excerpt of...circles about abortion and homosexuality. Reed embarks on a cross-country book tour...said a spokesman for the publisher. Reed has a different standard for measuring...
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Reed, Stanley Forman
Book article from: The Oxford Companion to the Supreme Court of the United States
Reed, Stanley Forman (b. Minerva, Ky., 31...the seventy‐seventh justice, Reed served during a period of major change brought...a small town in Mason County, Kentucky, Reed was the only child of John A. Reed and Frances...
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Reed, John 1887-1920
Book article from: American Decades
REED, JOHN 1887-1920 Reporter Busy at Harvard...Born in Portland, Oregon, in 1887, John Reed entered Harvard University with the illustrious...1911. The Stories of Workers and Peasants Reed wrote with great passion about domestic social...
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Reed, A. C. 1926–
Book article from: Contemporary Black Biography
A. C. Reed 1926 – Blues saxophonist, vocalist, bandleader The saxophonist A.C. Reed stands out from the ordinary run of Chicago...the blues. And most distinctive of all is Reed ’ s unique sense of humor. While...
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Reed International PLC
Book article from: International Directory of Company Histories
...venture proved uneconomical. Reed sold it to his friends, the...crisis was precipitated by Albert Reed ’ s death in 1920...into cash. Once again, the Reeds turned to their largest customer...buy a large block of shares in Reed, through the Daily Mirror and...
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Reed, Lou
Book article from: Contemporary Musicians
Lou Reed Singer, songwriter, guitarist For the Record … Lou Reed gained limited notoriety in the late 1960 ’...After attending Syracuse University in New York, Reed began writing songs for the Long Island-based Pickwick...
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