看到版上災情嚴重,加上自己本身也是受害者,因此決定來這發文
小弟本身就是在做LCD貼合的,大致上也猜的出黃斑形成原因
LCD的光源明暗是利用液晶(LC)的旋光特性,經由電壓來控制LC的角度
也因此當你把畫面打到黑色,從大角度看螢幕其實就會看到整個畫面有點白茫茫的
那為什麼會看到所謂的黃斑?
問題就是出再"NO AIR GAP",S社為了要讓畫面變的更漂亮,更不會入塵
便在LCD與TP之間黏了一層叫做OCA的壓克力系光學膠
這層OCA的折射率與玻璃(約1.52)幾乎一樣,因此可以降低入射光與反射光的反射與散射,讓畫面變的更美,
但在貼合的過程中因LCD受力的不平均,拉扯或是擠壓到LCD表面,造成液晶角度偏移所形成
我們稱之為"應力痕",泛稱MURA
因此在白畫面看會泛黃,一樣的位置切到黑畫面從大角度看,會有更驚奇的發現,大家可以試試
(會看到黑畫面中有一坨白色的影子)
我想說的是,這個問題在S社內部一定很清楚,但很難想像S社竟然把"應力痕"的東西賣給消費者,
卻說不影響使用,屬正常現象,但在我眼中這就是瑕疵品,根本不該拿來出貨的,才32度左右就那麼明顯,
那之後夏天還得了,真的是砸自己的招牌
附帶一提,有聽聞同業H社還沒上市的新手機,似乎也有這個現象,驗機時可要多注意,如果可以帶吹風機的話
至於在高溫下為何會更明顯,我判斷應該是OCA在高溫下膨脹對LCD表面產生更大的應力
http://www.xperiablog.net/2012/03/21/some-xperia-s-users-complaining-of-yellow-tint-display-issue/
Some Xperia S users complaining of yellow tint display issue
by XB on 21/03/2012
in Problems,Xperia S
Now that the Sony Xperia S is out in many markets across the world, we are starting to hear about some users complaining about problems with their display. We’ve seen comments both on our forum and over at xda-developers about a yellow tint (or spot) towards the bottom of the handset. We’ve included some pictures below from different users that highlights the issue to varying degrees.
For some people, the yellow spot is very prominent, whereas for others they are seeing a yellow tint to the very bottom of the screen and is much harder to notice. It typically can be seen on a white background, for example when browsing. Just to be clear, our Xperia S exhibits none of these traits, so we imagine this affects a minority of units.
From the sounds of it, the first case seems like a display defect and people who have had this problem have had their handsets exchanged by Sony. Their new phones do not appear to have this problem. Regarding the yellow tint, it is difficult to know whether this is a display or software issue. It could simply be the glue that holds the display together that should vaporise over time. If anyone is experiencing any display problems then please let us know in the comments below.
Yellow spot issue
Yellow tint issue
kkchou wrote:
偶然間看到一則 ip...(恕刪)
看起來是一樣的災情@@ 不過聽說也有一段時間就恢復的~
光學膠乾了 就不會了 這樣
希望XS 也是= =
ip4黃斑
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