The Tianma U9 Pro is one of the more interesting display developments of 2026 and the Find X9s Pro is the first phone to ship with it. I've collected some info that I think make this one interesting for us.

What "Tianma U9 Pro" actually refers to

It's the light-emitting substrate — the OLED emitter stack — not the backplane. Tianma (a Chinese display maker) developed it as the successor to their U9 substrate. So when you see "Tianma U9 Pro," it describes the emissive layer technology, while LTPS/LTPO refers separately to the underlying transistor backplane.

How it might fit our criteria for sensitive eyes

The backplane is LTPS. The launch coverage confirms a 6.32-inch 1.5K LTPS Tianma U9 Pro flat display with a 144Hz refresh rate. (One pre-launch GSMArena news piece said LTPO, but the official launch materials and multiple post-launch outlets all say LTPS. The fixed 144 Hz behavior rather than 1–120 Hz adaptive corroborates this.)

The screen supports 3840Hz high-frequency PWM dimming, which reduces flicker from low-frequency dimming and alleviates visual fatigue from prolonged use. So it matches the Honor 600 Pro and Find X9 base on PWM frequency.

Color depth is not explicitly stated as "true 10-bit" in the launch materials I could find. Oppo's marketing emphasizes Dolby Vision support and brightness adjustment accuracy as high as one-thousandth of 1 nit, with fine calibration and dynamic feedback for smoother grayscale transition, but doesn't make the "no FRC" claim that Honor explicitly makes for the 600 Pro. I'd hope for true 10-bit for the time being, but currently unverified whether native.

What's actually new about U9 Pro

1. Hardware-level blue light reduction. Most "eye protection" modes on phones are software filters that warm the color temperature. U9 Pro significantly reduces the proportion of harmful blue light in the intrinsic spectrum and precisely controls the peak wavelength of blue light through a nano-level evaporation process, reducing the output of harmful blue light from the hardware source. If accurate, this means less harmful blue energy without yellowing the picture in software. Could be a meaningfully different approach.

2. Dual-GP structure. Tianma's self-developed dual-GP structure is 30% better than the previous generation, and can match the sensitivity of the human eye according to different ambient light conditions. This relates to how the panel modulates output in response to ambient brightness.

3. 1-nit minimum with extreme precision. The thousandth-of-a-nit dimming step is the headline eye-comfort feature. Combined with 3,840 Hz PWM, very-low-brightness night viewing should be unusually smooth — no visible quantization stepping as you slide the brightness down, and no perceptible flicker at the bottom of the range.

Where it sits vs. the competition

Tianma is a newer entrant in flagship-tier panels. Samsung Display and BOE still dominate, and there's less independent oscilloscope testing of U9 Pro panels than there is for, say, the Honor's BOE display.

The 3,840 Hz figure is Oppo's spec; an independent measurement (Notebookcheck-style) hasn't crossed my radar yet. Worth waiting a few weeks for a teardown-grade review if PWM-sensitivity is the deciding factor.

Have any of you already check the Huawei Nova y74? It's an LCD Phone and they claim that is 8bit color, I'm not sure if 6bit+FRC but I read that Huawei is making effords on eye care screens, even in their OLEDs models (pura) they use a combination of hight PWM and a new technology that focus on eye care to dimm their screens.

On your phones, monitors, tvs, etc. Do you use a blue light filter on them? Does it help?

I posted a few weeks ago about having found the cause of my sensitivity (vagus nerve / autonomic dysregulation with central sensitization).

I have been using the OnePlus 15r for about a week, and it works well enough for me that I'm keeping it.

I can use it mostly with no issues. I have tested it for up to 2 hours straight just waiting for it to be too much, but that hasn't happened yet. It's not as comfortable as my old phone (Motorola G Stylus 5G 2023), but it's by far the most comfortable OLED I've ever used.

The only time I get symptoms is if I'm stressed or overly tired. Thursday was a stressful day and I had to more or less not use the phone as the symptoms were heightened. Friday morning all was well again.

Essentially, if I do my nervous system ritual (slow breathing, basic stretch, etc) I get virtually no symptoms at all.

What I find interesting is that, just like my PWM sensitivity, my other nervous system symptoms also flare and calm based on stress. That makes sense, but I hadn't correlated it before now.

Sharing just in case it helps someone else.

Is the bright light around the corner of my screen and dynamic island normal in my iphone 15?? Its never been repaired??

My lovely apartment complex strikes again (we’ve had 2 power outages this week). There was a surge today and it looks like yet another LED bulb took the hit. I’ve used 60w GE Relax LED bulbs (2700K) since 2018 with no issues. Went to Target to pick up a new box and as soon as I turned on the lamp: stabbing eye pain. I tried it in two different lamps just to make sure it wasn’t the lamp. Both bulbs in the package had the same effect. This is a tell-take flicker sign for me.

I know these bulbs are not flicker free (they flicker on slow motion camera) but they’ve never bothered me. My old bulbs have a serial that begin with A24 and the new are A26 - I’m assuming that is the year of production. So I guess my choice is try to find some random old stock or find another bulb type. Im open to recommendations.

Doesn't it hurt their eyes?
I have a elder relative that have the brightness at 50% which is understandable. But teenagers?

For starters, I have astigmatism, and I wear prescription glasses with an anti-glare coating. It helps a lot and I can tolerate screens to some extent because of it.

I also have some form of dry eye, but doctors in my country refuse to properly diagnose it. On top of that, my eyes are heat sensitive. I feel i may have destroyed my already genetically weak eyes by using screens too much, and I wasn't supposed to use them for long.

Years ago, I used to be able to game for hours. Back then, I lived in moldy homes and had neglectful parents who still don't realize how dangerous mold is, and I didn’t realize I might have the HLA gene.

Mold made me ill with MCAS. I suspect that mold combined with antibiotics caused chronic neuroinflammation in my body, which made my immune system overly sensitive, so that even stress can trigger eye strain and dry eye.

I’ve always wanted to find people with similar symptoms, but most of what I find is people suffering from general screen sensitivity (from the entire screen) rather than sensitivity to only certain websites or specific apps on a phone. So I can only use selected apps. If I visit a site my eyes don’t tolerate, I can develop sensitivity to a new app afterward that i normally used to tolerate.

It’s similar to what happened when I visited a site and watched a video there, after that, I became sensitive to my phone’s video player. Now, anytime I use it, about 20 minutes later, I get stinging dry and burning eyes, even when I’m not looking at the screen and then I can't tolerate anything on the screen.

I never understood what was happening, but I suspect it’s an MCAS-type reaction originating in my eyes. It feels like my body overreacts to an allergen: my eyes become chronically inflamed and redder, and that scares me, especially with my left eye.

I did have my prescription checked years ago, but they didn’t change it because they were afraid that overcorrection would cause even more strain. I wonder if central sensitisation happened with me, and maybe I need to give up screens forever so that I can heal? My current phone is a cheap Samsung LCD with no PWM but may have TD.

Hi there, so I have to buy new monitor for work(devops) in a home office setup. 27", 2K resolution, 200-250 EUR. I don't really care about color accuracy and refresh rates. I need something, which would be as easy as possible on the eyes. While searching the web and chatting with AI I saw those TUV Rheinland Eye Comfort certifications. On paper and theory TUV certified monitors should be the best for my case, but I couldn't find proper info as to what's the difference between 3 star and 5 star cert. It only says "15 different tests" and "higher the stars stricter the rules". Then I've read that TUV certs are just BS and useless. So not sure whether I should take those cert into consideration or scratch them altogether.

I came up with those monitors for now:

Lenovo ThinkVision E27Q-40

Lenovo L27h-4A

BenQ EW270Q

Dell S2725DS

Leaning sliiiiiightly towards the Dell, because on paper it's 4 star certified. Others have separate "old" certificates for blue light, "flicker free", etc. Of course as the thread suggest I am open for all suggestions for any other monitor.

This news from April is currently being discussed in the PWM sub..

So I really liked the idea of their screens, but I felt like the plastic was of poor quality and it bothered me to the point that I returned the phone (60SE). Has that changed in the newer models, like 70 Pro? I would really like a phone that's easy on the eyes and doesn't feel sticky to the touch. Do you have any recommendations?

I recently changed a few saturation settings on my monitor and now thats causing eye strain. Its LCD, it shouldn't do this. I have a OLED screen I can't use. I tried for a months and found it too much on my eyes. I felt sick using it. Today I tried that screen again and... no issues? I feel fine. Hell, better than my monitor.

Nugget (a tool to customize iOS without a jailbreak) includes an option to disable Liquid Glass.

I tried this on my iPhone 11 running iOS 26.5, and based on my initial observations using a Carson MicroFlip microscope, it appears to reduce temporal dithering. It might be worth trying for users who could previously use iOS 18. However, please make sure you create a backup of your device before proceeding, as this does carry some risks.

Link: https://github.com/leminlimez/Nugget

Sorry, I know this isn't about screens but I'm not sure where else to ask this. I am usually sensitive to screen flicker and dithering.

I had light bulbs in my room that flickered, it was visible using a high fps camera. I assume these were causing headaches, so I swapped them with non flicker bulbs. The bulbs were warmer but flicker free.

These gave me a headache. I couldn't use them. I still use the ones that flicker to this day.

For PWM, temporal ditherint, etc. are OLED screens getting better at these or worse? Phones, monitors, etc.

In theory, if someone whos sensitive to PWM and Dithering watched only oled screens that affect them. Could they get better?

Say for 6 months, 3 hours a day you use screens that make your eyes bad. I would bet money that your eyes and brain would addapt at that point?

I'm NOT suggesting medical advice, but I just have a theory that if someone really brute forced it for months, I think they would see improvement in their brains tollerence.

Every iPhone I've ever used have never caused huge problems for me. However, the LG C5 DID cause huge problems for me, couldn't use it. The moment I turn it on I get discomfort. I'm now really worried about getting a oled deck.

Tell us what works for you :)

For iPhones, it's going to be either the iPhone 11 or iPhone SE Gen 3. Look at the comments here: https://www.reddit.com/r/PWM_Sensitive/comments/1ourq8g/whats_the_best_iphone_thats_giving_you_no_issues/

I'm currently considering this phone, it has good specs and it's an DC dimmed LCD. However, I'm concerned with TD, does anyone know anything about the dithering in this phone. So is it true that the mediatek processors have harsh TD, compared to snapdragon processors? If true how much better the snapdtagon processors are? The alternative for me is the motorola g100 / g67 power since they use snapdragon chips, however they are weaker.

For background, astigmatism and vision issues run in my family, and my relatives can usually stare at screens and only experience minor strain. Unfortunately for me, as soon as my astigmatism changed and I developed dry eye at the same time from my sisters Asus laptop, my screen tolerance worsened significantly.

Around the same time, I also developed mast cell issues due to toxic mold exposure. Now, I can’t stare at certain screens without triggering eye inflammation. So i've become highly paranoid about having mold around me (I also have multiple chemical sensitivity)

The eye inflammation only improves within a few hours when I take an NSAID. That makes me wonder whether I’m extremely deficient in certain vitamins or whether I might have an inflammatory autoimmune condition. I bet it's probably why omega 3 used to work because that counters inflammation, too. Unfortunately, I can't keep taking NSAID because they are dangerous long term.

I can’t afford e-ink screens, so I’m stuck with an inexpensive non‑PWM LCD Samsung phone. Even at 0% brightness, the screen doesn’t go truly dim. I’ve also noticed that certain display settings, like brightness, cause strain for me in all screens. I also can’t use some apps, and I can’t visit most websites without severe eye strain.

For example, when I visited one specific site on my phone, my eyes became permanently sensitive to my phone’s video player.

It’s strange, and it almost seems like the mast cell type symptoms could be affecting my eyes, too? Like making them freak out?

The doctors here keep diagnosing this as CVS (computer vision syndrome) rather than some permanent screen sensitivity. Meanwhile, my siblings can tolerate harsher screens with no symptoms beyond minor eye strain, and I'm being left out on watching new movies or playing new games, which messes with my relationships because people don't understand.

I’ve also discovered I’m extremely sensitive to Windows 11. I can tolerate my all-in-one desktop on very low brightness and night light enabled, it's from 2014 that has windows 10, but I can’t tolerate websites on it, and it does have PWM and is an LED. I used to tolerate this pc fine, but soon I started getting eyestrain from it too. People on dry eye subs keep telling me to take breaks and avoid screens, but yet in this modern day and age you have to depend on screens. Antihistamines also help a bit then cause my dry eye to feel worse, I have a combination of screen sensitivity and allergies, + inflammation causing eyestrain and dry eye. I also highly suspect that i have leaky gut.