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    為何開發可折疊手機這么難?屏幕材料問題最難解決

    來源:神馬作文http://www.sxsrhm1.com

      6月29日消息,據外媒報道,智能手機制造商需要些新的東西來撼動市場,許多人認為可折疊手機可能是“下一件大事”。

      智能手機上的漸進式變化并沒有像過去那樣產生預期的刺激,這導致蘋果和三星等公司的銷售停滯,因為人們持有手機的時間更長了。因此,現在有些科技制造商正在開發豪華可折疊智能手機,它們比老式的翻蓋手機先進得多,而且可以展開充當平板電腦。

      但事實證明,將折疊式屏幕從概念轉變為可正常運行的設備是一項巨大的工程挑戰。

      眾所周知,三星以發布近2000美元起價的GalaxyFolds而備受矚目。但許多早些時候接觸過這個裝置的人發現其鉸鏈存在缺陷,同時在取下保護膜后屏幕也會破裂。作為回應,三星推遲了這款設備在4月份的發售,目前還沒有宣布新的發貨日期。

      本月早些時候,華為宣布將推遲發售其售價2600美元的可折疊智能手機,現在計劃在9月份推出MateX。與此同時,蘋果已經為一款可折疊設備申請了多項專利,但尚未宣布開發這款設備的計劃。

      CreativeStrategies公司的分析師本·巴加林(BenBajarin)說,可折疊屏幕創造了“一系列極具挑戰性的材料科學問題”。

      這包括制作OLED屏幕,使像素能夠在彎曲的情況下不會受到影響,并創建不會導致屏幕彈出的鉸鏈。還有一個挑戰,那就是如何處理電池,以及它是否應該隨著屏幕彎曲。然而,最大的挑戰是屏幕本身。

      三星和華為都使用塑料聚合物制成的防護屏。塑料聚合物具有足夠的柔韌性,可以彎曲,但它們不像玻璃那樣經久耐用,而且很容易被刮傷。阿爾弗雷德大學玻璃科學教授威廉·拉庫斯(WilliamLaCourse)表示,塑料也會起泡,因為它們可以變形而不會破裂,因此也會起皺。

      塑料聚合物可能使折疊設備更快投入市場,但長期的解決方案是玻璃,因為后者更耐用。玻璃只有在高于593攝氏度的溫度下才能永久變形。

      拉庫斯在接受采訪時說:“超薄玻璃的厚度小于人類頭發的直徑,而且強度很高,我們可以使玻璃彎曲、扭曲而不會斷裂。它不會像美元鈔票那樣平折,但你可以繞著一根金屬棒反復折疊,它可以保持平坦而沒有折痕。”

      智能手機屏幕通常是由玻璃制成的,不僅結實而且足夠柔韌。問題是,它還沒有達到可以折疊的地步。拉庫斯預測,根據他在玻璃制造方面看到的進展,一種帶有折疊玻璃屏幕的設備可能在未來一兩年內上市。

      理想的折疊屏幕需要足夠厚以便保持超級結實,同時也要足夠薄以保持人性,無需很大力量就能重復折疊。拉庫斯說:“玻璃越厚,彎曲的力就需要越大。當然,你必須施加更大的力來彎曲它。”

      全球最大的玻璃制造商之一康寧(Corning)創造并生產了大猩猩玻璃(GorillaGlass),包括蘋果在內的幾家智能手機制造商都在使用大猩猩玻璃。2017年,蘋果投資2億美元,支持康寧對玻璃生產方法進行創新。

      康寧的一位發言人證實,該公司正在努力制造一種超薄耐用的玻璃,可用作彎曲裝置的顯示器。與替代材料相比,這種玻璃可以彎曲數十萬次而不會受到損害,同時保持其平坦度。替代材料在大約10萬次彎曲時就會開始顯著變形。

      此外,康寧的玻璃可以實現較長時間的靜態彎曲,而替代材料在較長時間后很容易產生折痕。

      拉庫斯表示,康寧負責多項創新,包括超高強度的厚玻璃、超薄玻璃和足夠柔韌的玻璃,可以像紗蘭包裝紙那樣成卷銷售。例如,大猩猩玻璃可能很薄,但它可以比鋼更強。

      拉庫斯說:“這項技術正在被推向新的水平,但仍然存在限制。”他指出,玻璃是一種易碎的固體,這意味著在壓力作用下,表面的劃痕等微小缺陷可能會增加。玻璃越厚,彎曲或折疊時產生的壓力就越大,因此它可能有更多的缺陷。用于智能手機屏幕的薄玻璃更容易彎曲,這意味著更小的壓力和更少的缺陷。

      但是,根據拉庫斯的說法,即使是超薄的玻璃也不能像鈔票那樣折疊。盡管與塑料相比更有優勢,但如果把玻璃放在像金屬棒(可以作為中心軸)一樣的東西上,那么薄玻璃就可以折疊起來,而且它在保持平坦的同時也不會有折痕。

      拉庫斯說,即使是大猩猩玻璃也有局限性,因為它的表面可能有微小的裂縫。然而,它仍然是理想的屏幕材料,因為玻璃是如此緊密地擠壓在一起,裂縫被推在一起,使得其不易破裂。

      第一代可折疊智能手機可能即將問世,但完美的產品或許仍遙遙無期。

    上一篇:備貨10萬臺,華為折疊屏手機最快7月國內上市 或14999元 下一篇:后廠村沒有眼淚:塵沙飛揚之地變身“中國硅谷”
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