On April 18,Blogger @ magician Dan Xiaoding let Samsung Galaxy S20 ultra realize DC dimming.
It is learned that DC dimming changes the brightness of the screen by increasing or decreasing the power of the circuit. Power = voltage x current, so changing the voltage or current changes the brightness of the screen.
PWM dimming is to change the brightness of the screen by alternating the on and off of the screen.Because the alternation of light and light is fast enough, it is beyond the perception range of human eyes. The longer the off screen state lasts, the lower the brightness of the screen; on the contrary, the longer the on screen state lasts, the screen will turn on, which is what we call stroboscopic.
Attention is drawn to the fact that the sensitivity of different people to screen alternately bright out, some people are more sensitive, encounter low frequency PMW dimming screen may appear eye discomfort, commonly known as
At present, most domestic mobile phones with OLED screen support DC dimming,However, Samsung Galaxy S20 series and Galaxy S10 series have not been officially supported (Galaxy S10 users can realize DC dimming support by brushing a third-party ROM).
Now the galaxy S20 ultra DC dimming has been arranged, which makes up for the regret of the emperor.
Finally, the detailed parameters of Galaxy S20 ultra are reviewed:
Using a 6.9-inch hyper-sensitive full-view screen (sixth-generation gorilla glass) with a QHD, refresh rate of 120 Hz, with Qualcomm Celldragon 865 flagship platform, a rear 100 million pixels (108 MP)48 million periscope long-focus 12 million ultra wide-angle TOF lens with a battery capacity of 5000 mAh..