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Company News >> Xiaomi 8 DC dimming comes: OLED screen "not spicy eyes"
Yesterday evening, Xiaomi mobile phone, system software department director Xiaomi said that Xiaomi 8 DC dimming development version plans next week, the earliest this week push, does not rule out the engineer code time may have a little deviation.

According to Wang Teng's previous statement, there are currently three DC dimming hardware solutions:

 

1. Fixed the screen dimming level to the brightness mode switching node, ensuring that the screen PWM dimming mechanism is not triggered, and then adopting the Qualcomm platform's pcc+dither scheme to compress the color data output to the screen in the case of ensuring the screen display effect as much as possible. Value, to achieve the effect of reducing brightness.

 

2, fixed screen dimming level to brightness mode switching node, to ensure that the screen PWM dimming mechanism is not triggered, and then modify the alpha channel described above, in the HWC hardware module, by adding a mask +dither solution with adjustable transparency, Compress the color grayscale value output to the screen to reduce the brightness of the screen

 

3, fixed screen dimming level to brightness mode switching node, to ensure that the screen PWM dimming mechanism is not triggered, using a third-party display chip, in the case of ensuring the screen display effect as much as possible, compressing the grayscale value of the color data output to the screen , to achieve the effect of reducing brightness.

 

Xiaomi's new DC dimming solution also uses a fixed brightness mode switching node, which uses the millet system integration and self-developing algorithm to integrate the "true hardware" DC dimming solution in the driver IC of the OLED screen. It can be clearly seen from the figure that the friend is different from ours, and the color is more transparent under low brightness.

 

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