Unverified85% confidenceDecision RuleTime unknown
选购时应区分'类DC调光'和真正的DC调光：红米和iQOO中端OLED屏在低亮度下仍采用PWM调光，只是频率提高到1920Hz，并非全亮度段DC调光
1
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85%
Confidence
Long-term
Relevance
-
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UnverifiedDC调光屏比PWM调光屏更护眼，低亮度下无频闪；若必须是OLED屏，选PWM调光频率≥1920Hz的机型以降低频闪伤害87% similarUnverified带DC调光或PWM高频调光（≥1250Hz以上或标注无频闪）的灯泡才能护眼，低价灯泡低亮度时用低频PWM，调暗后频闪明显加剧85% similarUnverified选购时应区分类DC调光模式和硬件级DC调光：红米/iQOO中端机型多为高频PWM方案而非真正DC调光，购买前需确认调光方式而非仅看宣传护眼标签85% similarUnverified调光方式分PWM（脉宽调制）和DC（直流）两种，低频PWM在低亮度下可能产生频闪，对光敏感人群应选DC调光或高频PWM产品84% similar
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