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      屏幕更大且攜帶方便 可折疊的“黑科技”手機來了

      時間: 2019-08-12      來源: 人民網-科普中國      王亞宇



      手機換代升級的速度越來越快,從鍵盤手機到小屏手機、大屏手機,再到如今研發出的折疊手機,手機越來越成為我們生活中不可或缺的一部分。那么,手機能實現折疊功能的原理是什么呢?今天我們就來一起了解一下。

      手機折疊功能的實現,關鍵在于引入柔性屏(OLED屏)。相較于LCD(液晶)技術,OLED(有機發光二極管)技術具有自發光、廣視角、高對比度等優點。據中國科學院院士、理論物理學家歐陽鐘燦解釋,柔性屏的特性取決于支撐它的基板(PI),也就是一塊厚度為10μm的塑料板,它是在玻璃基板上做一層玻璃膠,形成固體后再加一層PI溶液制成的。然后再在基板上做有機發光、各種半導體管來制成柔性屏,其總厚度僅為0.03mm。相較之下,一張普通A4紙的厚度約為0.08mm, 可以看出這種柔性屏在厚度上有獨特的優勢,更薄的屏幕也給手機廠家更多的空間進行內部設計,如可以放更大的電池來提升續航能力等。

      折疊屏手機的設計使得其增加了許多傳統手機沒有的新鮮功能:

      1.屏幕更大且攜帶方便,擁有更多的應用場景,如可以分屏看視頻,可以獲得更好的游戲體驗等,而在獲得大屏幕的同時,卻像一般的手機一樣便于攜帶。

      2.由于屏幕可折疊,攝像頭可以二合一,主攝像頭既可以當前置攝像頭用,又能作為后置攝像頭用,無論是廠家設計還是用戶的體驗,都會獲得很大的提升。

      盡管折疊手機目前大熱,但是其技術也有不完善的地方,尚且不是一個成熟的產品,目前存在的較大的問題有:

      1.折痕問題:折疊手機表面的材料是一層塑料面板,因此雙屏在折疊的時候會出現不平整的情況,盡管這種塑料材質的質量還可以,可是缺乏一定的強度和硬度,在反復循環多次使用之后,就會出現一道折痕。

      2.鉸鏈的壽命問題:高頻率的折疊勢必會對鉸鏈的壽命提出更嚴峻的要求。

      3.電池問題:實際使用過程中,電池需要給兩塊屏幕和處理器供電,屏幕越大耗電量越大。

      此外,手機折疊功能使屏幕靈活性增加的同時,防水、防塵功能、軟件應用功能、成本問題也面臨著技術挑戰。不過,隨著技術的不斷進步,折疊屏手機有望成為未來的主流手機,帶給人們更暢快的使用體驗。

      本文由中國工程物理研究院科技委副主任汪小琳進行科學性把關。

      責任編輯: 史娜

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