S20 FE 亮度超過30%自動進入DC調光模式? - 手機討論

看到notebookcheck這樣講
嚇了一跳
真有這種技術?

https://bit.ly/2IWEEnn

PWM flickering only occurs at display brightness levels of 30% and less.
Above this level, automatic DC dimming starts

The display backlight flickers at 227.3 Hz (Likely utilizing PWM) Flickering
detected at a brightness setting of 30 % and below. There should be no
flickering or PWM above this brightness setting.

如果有鄉民覺得notebookcheck不可信
可以去借S20 FE來測

一個月前板上看到一種說法:
iPhone12亮度25%以上採DC調光
#1Va-k6qc (MobileComm)
https://www.ptt.cc/bbs/MobileComm/M.1603529606.A.D26.html

照notebookcheck的測試
上述說法並不正確
iphone 12只有在最大亮度停止閃爍

https://bit.ly/3nKXD3t

Because OLEDs don't have background lighting that you could dimm, the entire
screen has to be turned on and off all the time to achieve a lower
brightness. This causes flickering, which we measured at 226.2 Hz on the
iPhone 12. It only stops at maximum brightness.

相信某些對PWM著迷的鄉民會努力去驗證notebookcheck的說法

據oneplus創辦人的說法
什麼類DC調光
那只是廠商的噱頭啦
別被騙了

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