A glossy screen suffers from glare, but produces more vibrant colors. Can LEDs really make laptop screens brighter, consume less power and offer better colors? I was surprised how inefficient the technology is. They seem to be getting popular, just last month Apple started selling their Finally, I wondered why Dell and Sony mentioned that the LEDs they use are white. I couldn't find anything from Dell that mentioned better colors. According to Dell, the LED display "starts at 3.97lbs and is 0.87 inches thick compared to the standard display which starts at 4.28lbs and is 0.97 inches thick." Previous Next Sort by votes. They estimate that LEDs will be used in 3-5% of laptop computers this year. were new until they stop working. If the number is low enough, less power is needed and less heat is generated. Specifically the luminance of the LED screen is 300 cd/m² vs. 220 cd/m² for CCFL (and no, I can't explain what cd/m² means). Found my own answer. Mr. Mossberg gives the impression that by their very nature LEDs save power. câu hỏi này vẫn còn rất được quan tâm từ đại đa số người dùng. The anti glare is a matte finish. Update July 29, 2007: Updated with a direct comparison between the brightness rating of the two screens offered by Dell for the M1330 (from the Owners Manual). I didn't see any marketing material from a laptop manufacturer that mentioned the expected lifespan of LEDs vs. CCFLs. Nov 6, 2007 11,129 129 65,390 2,568. Công nghệ màn hình led backlit là gì ? It turns out that the number of LEDs in a screen varies. LEDs are solid state devices, and "fall off The DigiTimes article reports that most LCD screens 10 inches and under use LED backlighting. The Sony TX and TZ laptops have a matte finish. I didn't bother asking what a diffuser is. Sony is the most aggressive in making claims about the better colors in their LED screens, using the terms "brilliant", "amplified" and "true-to-life" to describe them. In the July 12th edition of the Wall Street Journal, Walter Mossberg reviewed two new laptop computers, the Dell M1330 and the Toshiba Portege R500. I don't see many hands. Readability is essential for the optimum performance of any display, and you Alfred confirmed that LEDs are indeed thinner and therefore the screens can be made thinner. To date, LEDs have been popular mostly in smaller displays. © 2020 CNET, A RED VENTURES COMPANY. The M1330 comes with either a CCFL or LED lit screen, so it makes for a handy comparison of the two technologies. I can't be sure about the other laptops because the claims of Even more significant is that their output decreases over time. For a better experience, please enable JavaScript in your browser before proceeding. The Sony VAIO TZ machines are less than an inch thick, but only if measured at the narrowest point. Both anti-glare and anti-reflective treatments represent ways to improve or optimize readability of a displayed image or set of characters. The 15.4 inch Macbook Pro started at $1,999. Check inventory at Best Buy, Walmart, Amazon, Target and GameStop, Amazon Cyber Monday 2020 deals: $65 Echo Show 8, $60 Amazfit smartwatch, $299 Sonos Move and more, Discuss: The pros and cons of LEDs for backlighting LCD screens, first laptop computer with LED backlighting, Nearly 100% of 10-inch-and-smaller LCD panels using LED backlight. weekly, on the Personal Computer Radio Show. For more than 20 years Alfred wrote for PC Magazine, and was their first Lead Analyst for Business Displays. According to Alfred, LEDs "already are commonplace in mobile devices such as GPS receivers, cell phones, and PDAs ... the first desktop monitors probably appeared within the past couple of years. In describing the R500 Discussion threads can be closed at any time at our discretion. Alfred pointed out that "At present LEDs generally draw more power and produce more heat than CCFL designs." Alfred Poor for advice. ", So, if the relatively high number of LEDs means increased heat and no power savings, why does Dell use so many? When I ran this by Alfred, he said: The difference is probably not important, but yes, CCFLs don't last as long. In addition, they claim that their LED lit screen offers better colors. He is a member of the Society for Information Display and the editor and publisher of HDTV Almanac, a web site with news and commentary about HDTV and related topics. In part this is because smaller screens use fewer LEDs which lowers the price differential over CCFL. That makes for more brightness and saves power.". With Sony, Toshiba and Apple, the cost of the LED screen is a hidden component of the total price. Bài viết này sẽ chia sẻ đầy đủ về công nghệ màn hình này Anti-glare displays are a more practical choice for most conceivable usage. released very soon. But in describing the M1330 Dell says "Our optional LED display uses 32 tiny, white LEDs ..." According to Alfred, "32 is a relatively high number for a small screen. Some large HDTV panels using high brightness LEDs could use that count or less for a panel with 8 or 10 times the surface area. Each laptop vendor has their own marketing term for glossy screens, Apple is the only company I've seen that actually uses the word glossy. aging to show any difference. when you order the 15 inch LED backlit Macbook Pro. At the highest point, they are 1.17 inches.

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