首页
登录
职称英语
Displays to keep an eye on A New displays are starti
Displays to keep an eye on A New displays are starti
游客
2024-01-09
37
管理
问题
Displays to keep an eye on
A New displays are starting to appear in consumer devices, offering advantages over today’s liquid-crystal screens. From tiny mobile phones to enormous fiat-panel televisions, liquid-crystal displays (LCDs) are everywhere. The technology is cheap, even for large panels— witness the tumbling price of LCD televisions—and can brilliantly display text and graphics. LCDs have made notebook computers possible and have pushed aside the bulky computer monitors of a few years ago. They make it possible to show films on aeroplane seats-backs, play video games on the train and see digital photos right away on the back of a camera.
B However, LCDs are not perfect. They can be power hungry, tend to produce washed-out images in bright sunlight and are often thick and inflexible. As a result, several other display technologies, each with benefits and drawbacks of their own, are starting to appear in consumer-electronics devices. Some of them could give the LCD a run for its money, at least in some areas, by offering crisper images, brighter colours, thinner screens and lower power consumption.
C Electronic paper displays, first developed in the 1970s, are finally making their way into a number of products. Appropriately enough, Sony and several other manufacturers are using the technology in portable "e-book" devices intended to replace books and newspapers. Colour LCDs are grids of tiny shutters, each of which decides how much light to let through from a "backlight" behind the screen. Electronic paper, conversely, relies on ambient light from the surroundings, just like ink on paper—so electronic-paper displays are sharp and easy to read in bright sunlight. Better still, once the screen has been set to display a page of text, no electrical power is needed to keep it there; power is consumed only when the screen is updated, which can extend the battery life of mobile devices.
D The technology is also easy on the eye, says Nico Verplancke of IEBT, a Flemish research institute. Last year he oversaw a trial of electronic-paper technology carried out by De Tijd, a Belgian newspaper. The newspaper asked 200 readers to evaluate an electronic edition displayed on the iLiad, a device made by iRex Technologies of Eindhoven, in the Netherlands. Their responses to the display were favourable. "The reading experience was pretty amazing," says Mr Verplancke. "It was very close to reading normal paper."
E Sony has developed a similar device called the Reader, which went on sale in America last autumn. Like the iLiad, it uses electronic-paper technology from E Ink, based in Cambridge, Massachusetts. E Ink’s technology has also been used in the Motofone, Motorola’s low-cost mobile phone for the developing world, a Seiko wristwatch, a weather-station and a flash-memory stick. And it will appear in a new mobile device with a five inch (13cra) roll-up display that will be introduced in Italy later this year. The "Librofonino", an e-book reader with a cellular connection for receiving information, was developed by Polymer Vision, based in the Netherlands, and will be sold by Telecom Italia.
F A second emerging technology is based on organic light-emitting diodes (OLEDs). Such displays, which are based on the electroluminescence of organic compounds, are said to be thinner and brighter than LCDs, and offer wider viewing angles. Since they emit light directly, OLED displays do not need a backlight. So far OLED displays have appeared mostly in small devices such as music players and as the secondary display on the outside of mobile-phones. Sales of OLED displays in 2006 reached $615m, says Vinita Jakhanwal of iSuppli, a market-research firm. But the technology is improving and annual sales will grow to around $3 billion in 2012, she predicts.
G The technology’s main drawback is that OLED displays only have a lifetime of around 20,000 hours, or a little over two years in continuous use, so they are not yet suitable for use in laptops or TVs. But those working on the technology are optimistic that this problem can be solved. "Every year, the R&D team is making strides," says Dave Das of Samsung. The South Korean electronics giant is one of the biggest backers of OLED displays. The firm is already using the technology in some of its mobile phones and music players, and introduced a prototype TV with a 40-inch OLED screen in 2005. Samsung is one of the biggest manufacturers of LCD TVs, but OLED technology could offer better brightness and contrast, and faster response. "It’s better at displaying fast-moving images, for example a football game," says Mr Das.
H Another emerging technology, called iMoD, is being developed by Qualcomm, an American firm that developed the CDMA technology that underpins modern mobile phones. The idea is to exploit microscopic mechanical structures that reflect light in such a way that specific wavelengths interfere with each other to create vivid colours, like those of a butterfly’s wings. (The name is derived from "interferometric modulator display",) Qualcomm says this approach can produce pure, bright colours using very little power. It has demonstrated the technology in prototype form and hopes to license it to handset-makers. Marlene Bourne, an analyst who covers the field of "micro-electromechanical systems", says iMoD is an impressive technology. As with electronic paper and OLEDs, it is certainly worth keeping an eye on. [br] *
选项
答案
假
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3346971.html
相关试题推荐
Paulistolistconsecutivepositiveintegersstartingfrom1.Ifdigit“3”appe
Jeremyistolistconsecutivepositiveintegersstartingfrom1.Whichofthefo
Becauseitis(i)______to(ii)______allofthecostsassociatedwithstartingane
Thesingerdisplayshersensitivitytodelicateshadesofmeaningandfeelingin
Thebiographernowdisplaysgreater______inherwork:sheexploresthefeelings
DisplaystokeepaneyeonANewdisplaysarestarti
DisplaystokeepaneyeonANewdisplaysarestarti
DisplaystokeepaneyeonANewdisplaysarestarti
DisplaystokeepaneyeonANewdisplaysarestarti
DisplaystokeepaneyeonANewdisplaysarestarti
随机试题
【21】[br]【28】[originaltext]TUTOR:Hello.JonathanBriggs,isn’tit?JB:Yes,t
虚拟存储技术是为了给用户提供更大的随机存取空间,常用的虚拟存储器由( )两级存
考虑荷载偏心及倾斜影响的极限承载力计算公式是( )。A、太沙基公式 B、普
云南白药(胶囊、片)主治A.跌打损伤,瘀血肿痛 B.闪腰岔气 C.心胃火盛所
有关抗凝血酶的叙述正确的是A.抗凝血酶是主要的生理性抗凝物质B.只能在肝脏合成C
市场经济条件下,解决公共物品供求均衡问题的方式是()A.市场方式 B.协商
心血管系统对于自主神经系统是 A.控制系统B.受控系统 C.控制信息D.
牙膏中洁净剂的作用是( )。A.防止贮存期间固体与液体成分分离 B.降低表面
(2018年真题)城市地下雨污水管疏浚检查时,常会从井内冒出一种非常活跃并能置人
鉴别原发性醛固酮增多症与失钾性肾病的试验是A.高渗盐水试验 B.水利尿试验
最新回复
(
0
)