It is quite accurate but I wouldn't call them "true DC dimming" per se as it would be a far stretch.
True DC dimming (or hardware DC dimming) is completely different from DC-like Dimming (as advertised in the poster). DC-like dimming utilize software algorithms to reduce flicker's screen off time, and pulse duration time to a minimum.
Thus calling it "True • DC-like dimming"(in Oneplus 13) or "Hardware equivalent DC-like dimming" (in Realme GT7 pro) may seem puzzling on first glance. It would be strange how both could co-exist. I would elaborate on this later.
Personally, I agree with above notebookcheck author's opinion on BOE's Q10 panel. BOE x2 panel that would be used Oneplus 13 does not suggest to me it has brought substantial hardware improvements (to mitigate eyestrain). It looks to use software algorthms to further maximize optimisation of eyestrain reduction.
BOE Q10 (which will feature on IQOO 13) however, is intriguing to me. It looks to be loosely inspired from a early proposal dimming solution for microLED, which its objective is to mitigate flicker. I wouldn't be surprised if it was a "testing the water" prototype of microLEDs.
Anyway, for the purpose of manufacturers' advertising marketing perceptive and what it actually meant for us consumers, I spent quite a few hours earlier drafting the below illustration.
It consists of a spectrum; where least eyestrain is on the left, and most problematic on the right.
Disclaimer that the below were based on my empirical observation and data.
View attachment 2442763
Allow me to elaborate on the above. In terms of PWM, we started with commerical displays that were mostly used under sheltered areas.(Illustration: orange zone) They were mostly used for quick glance or simply operation of machinery, doors etc. For intense reading, True DC dimming (Illustration: extreme left white zone) was used.
Then, as manufacturers began to push for higher readabiliity under direct sunlight, they pushed this brightness amount to extremely high lux. This was also where the brightness decay significantly increased from 40 luxs. As True DC dimming tend to consume more energy on higher brightness, PWM naturally became preferred dimming method. It was likely here where more people are being affected by PWM than ever before. (Illustration: extreme right red zone).
With more users becoming more vocal about health concerns, manufacturers introduced different solutions to attempt this above. Hence from where we were at ~ the extreme right, companies are moving closer towards left.
In short; think of the advertised "True DC-like Dimming" as a midpoint between Hardware / True DC dimming and DC-like dimming.
I don't know where would their upcoming panels be at in my above illustration scale. I would imagine it being at my scale's lime green area zone above.
I believe we can find out through test, and only pulse duration timing and and amount of amplitude brightness drop are the two most reliable measurement to PWM / flicker.
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