LG Display近日展示一款可彎曲的大尺寸(18吋)顯示器原型,它可以被卷成一個直徑3公分的滾動條,而無損任何顯示功能。此外,還可以把這款透明的顯示器打開來掛在墻上、平放在桌上,或是當成一幅畫裱在傳統(tǒng)畫框中。雖然目前只展示了原型產(chǎn)品,但LG預(yù)期,一款具有更高透光率的60吋版本將在2017年以前上市。

新的18吋可彎曲OLED顯示器可以整個卷起來存放或便于攜帶。
Source:LGw3Vesmc
“LG 持續(xù)展示在軟性基板上生產(chǎn)顯示器的能力,致力于導入商用化更是該公司的重點計劃,”NPD DisplaySearch總裁Paul Semenza表示,”再過幾年,我們就能看到小尺寸的可彎曲顯示器出現(xiàn),例如應(yīng)用在智能手表屏幕上,但這些都只是在彎曲玻璃上蓋后面安裝一層軟性基板, 至于想真正實現(xiàn)在任何時間可彎曲成任何形狀的話,還需要一段時間?!?
OLED 顯示器不需要背光,而且采用在透明基板上沈積的方式生產(chǎn),可懸浮空中顯示原理圖和其他圖形。LG展示其懸浮顯示技術(shù),以證實該公司已掌握了任何尺寸的可卷 曲透明顯示器所需要的基本技術(shù)。然而,目前在實現(xiàn)商用化之路仍存在明顯障礙,特別是無法保護 OLED 免于可能損壞顯示器的濕度與空氣。

可彎曲的18吋OLED顯示器可卷進3公分的滾動條中。
Source:LGw3Vesmc
“預(yù) 計在2020年以前,主動式OLED的營收可望超過230億美元,其中大部分都來自于具有固定彎曲角度的智能手表與手機,”Semenza表示,“主要的原因在于生產(chǎn)上的挑戰(zhàn)。或許目前已到把固定彎曲某個角度的顯示器封裝在玻璃或金屬中,以保護其免于環(huán)境的損壞,但還沒有一款背板夠靈活且可靠,足以避免對 OLED造成損害?!?
軟性顯示器可以為觀眾創(chuàng)造出一個身臨其境的環(huán)繞體驗──類似于 IMAX 電影院的體驗。屏幕彎曲技術(shù)還可以讓移動設(shè)備變得更易于攜帶,而且還可以提供像藍圖般易于運送的次屏幕。
這 款18吋的可卷曲顯示器原型采用1200x800的配置以及30R的曲率半徑,提供不到1百萬像素的分辨率,能夠整個卷曲起來放進一個直徑約1.2吋的 滾動條中,而仍正常顯示而無損于任何功能。LG表示,未來還將致力于將屏幕尺寸增加到60吋、曲率半徑提高到50R,實現(xiàn)更大尺寸的可卷曲顯示器。

相較于LCD約10%的典型透光率,LG的可彎曲顯示器可實現(xiàn)高達30%的透光率。
Source:LGw3Vesmc
LG顯示器的透明背板還能實現(xiàn)懸浮應(yīng)用──在透明的聚酰亞胺(PI)背板上顯示戰(zhàn)略性的數(shù)據(jù),大幅減少顯示器的厚度,而使其更具有可撓性。除了像科幻小說中用于顯示戰(zhàn)情以外,其他商業(yè)應(yīng)用還包括可在冰箱門上看到里面冰著哪些食物,以及有關(guān)冰箱內(nèi)溫度或甚至是廣告等信息。
根據(jù)LG表示,透過使用特殊的電路組件與薄膜組件,該公司開發(fā)的顯示器可實現(xiàn)30%的透光率(LCD透光率為10%)以及降低2%的霧化度。
本文授權(quán)編譯自EE Times,版權(quán)所有,謝絕轉(zhuǎn)載
編譯:Susan Hong
參考英文原文:Flexible Displays Going Commercial,by R. Colin Johnson
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Flexible Displays Going Commercial
R. Colin Johnson
PORTLAND, Ore. -- LG is first out of the gate with a completely flexible large-scale (18-inch) display that can be rolled up for transport into a three-centimeter (1.2-inch) scroll. The transparent display could be unfurled and hung on the wall, laid on a tabletop, or mounted in a conventional frame. Though it is only a demonstration prototype, LG predicted that it will have a 60-inch version with even higher transmittance on the market by 2017.
The 18-inch flexible OLED display can be rolled up for storage or transport.
(Source: LG)
"LG has demonstrated the ability to produce displays on flexible substrates for some time, working on getting that to commercialization is quite a project," Paul Semenza, president of NPD DisplaySearch, told EE Times. "We will start seeing smaller flexible displays over the next couple of years, such as those in a smart watch, but they will just be flexible one time when put behind a curved glass cover, but to have them flexible in any shape at any time is some time off."
The organic light emitting diode (OLED) display needs no backlight and, being deposited on a transparent substrate, could display schematics and other graphics in mid-air. LG demonstrated its mid-air display in order to prove that it had mastered the basic technologies needed for rollable transparent displays of any size, but there are still significant hurdles to commercialization -- mainly the inability to protect the OLED from moisture and oxygen, both of which destroy the display.
A working 18-inch flexible OLED display can be flexed into
a three-centimeter (1.2-inch) scroll.
(Source: LG)
"We believe that, by 2020, active OLED revenue could be just over $23 billion, most of which will come from smartwatches and mobile phones that are flexed and fixed," Semenza told us. "And the reason for that is the production challenge. You can encapsulate a curved and fixed display in glass and metal to protect it from the environment, but no backplanes yet exist that are flexible yet reliably prevent damage to OLEDs."
Flexible displays can create a wraparound immersive experience for the viewer -- similar to the Imax theater experience. Curved screen technology can also make mobile devices easier to carry, and it could provide auxiliary screens that are as easy to transport as a blueprint.
The prototype 18-inch display had just short of 1 million pixels in a 1,200-by-800 configuration with a curvature radius of 30R, allowing it to be rolled into about a scroll a little over an inch without damage and while still working. For the future, LG is trying to increase the screen size to 60 inches while increasing its curvature radius to 50R or a scroll a little less than two inches.
Unlike LCDs, whose typical transmittance is around 10%, LG's device offers a transmittance of 30%.
(Source: LG)
The transparent backplane for LG's display will allow mid-air applications -- for displaying tactical data on its transparent polyimide backplane, which minimizes the thickness of the display and makes it more flexible. Commercial applications, besides sci-fi like tactical displays, could be for refrigerator doors, where you could see the food inside, along with information such as temperature or even advertisements.
LG says that, by using special circuit devices and film components, it achieved 30% transmittance (compared with 10% for LCDs) and lowered haze to 2%.
責編:Quentin