A normal tablet or laptop is a bright, blue-rich light held close to your eyes. These screens either reflect the light already in the room, or add an amber light with almost no blue. The Daylight DC-1 is our top pick, because it is the only full tablet that works by daylight and has a warm backlight for the evening.
Daylight does most of the work for free. Start with sunlight first.
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No trial has tested reflective or amber-lit screens on sleep, so this grade rests on indirect evidence. In a crossover study of 12 adults, reading on a backlit tablet for 4 hours before bed suppressed melatonin, delayed the body clock by more than 1.5 hours and took about 10 minutes longer to fall asleep than reading a printed book. Two hours of tablet use at full brightness significantly suppressed melatonin, but one hour did not. iPhone Night Shift did not improve sleep in a study of 167 adults. A reflective screen gives off no light of its own, so at night your room lighting decides your exposure.
Reflective screens work best in the light your clock needs most. Outdoors or by a bright window, the screen gets sharper while your eyes take in daylight. A week of bright days also makes evening light matter less: in a lab study, evening light suppressed melatonin more after dim days than after bright ones. Why morning sunlight matters.
| Product | Type | Screen | Light at night | Colour | Refresh | Price |
|---|---|---|---|---|---|---|
| Daylight DC-1 | Tablet | 10.5 in reflective LCD (Live Paper), 1600 × 1200 | Amber backlight, DC dimming | Monochrome | 60 Hz | $729 |
| Eazeye Focus Tablet | Tablet | 10.3 in reflective LCD, 1920 × 1440 | Amber front light, DC dimming | Monochrome | 60 Hz | $399 |
| Eazeye Monitor 2 | Monitor | 23.8 in reflective LCD, 1920 × 1080 | None; needs a room lamp | Colour, 8-bit | 60 Hz | $1,299 |
| SpectrumView Pro 27 | Monitor | 27 in VA LCD, 2560 × 1440 | Incandescent backlight | Colour, 8-bit | 100 Hz, 1 ms | $1,100 |
Prices are approximate list prices in USD at the time we checked and change often.
Best overall
by Daylight Computer · $729
10.5-inch Android tablet with a 60 Hz reflective screen that reads by daylight, plus an amber backlight with DC dimming for evenings.
TypeTablet
Best for: Reading, writing and notes in the evening without a blue-rich backlight, and working outdoors by day
Best budget
by Eazeye · $399
10.3-inch reflective LCD tablet with an amber front light and DC dimming. Similar idea to the DC-1 for $399, with long shipping times.
TypeTablet
Best for: A cheaper reflective tablet for reading and notes, if you can wait weeks for delivery
Best monitor
by Eazeye · $1,299
24-inch colour reflective LCD monitor with no backlight. Lit only by the room or the sun, it draws about 5 W from USB-C.
TypeMonitor
Best for: Desk work in a bright room or outdoors, without a backlit monitor in your face all day
Best incandescent
by SpectrumView · $1,100
Handmade 27-inch 1440p monitor backlit by ten 25 W incandescent bulbs instead of LEDs. Warmer, flicker-free light, but heavy and hot.
TypeMonitor
Best for: People who want a colour, fast monitor without an LED backlight, and accept size, heat and an experimental build
A low blue light screen either reflects the light already in the room, like paper, or adds an amber light with almost no blue. The best low blue light tablet is the Daylight DC-1: it reads by daylight and has a warm backlight for the evening. If you only need a desk monitor, a reflective one like the Eazeye Monitor 2 works the same way.
Your body clock reads evening light through melanopsin, a pigment in the eye that responds most to blue light near 480 nm. An international expert panel recommends keeping clock-relevant (melanopic) light at the eye below 10 lux for the 3 hours before bed.1 A tablet held at reading distance adds to that, and bigger, brighter screens add more.2
The best-known study compared reading on an iPad with reading a printed book for 4 hours before bed, over 5 nights each, in 12 adults. On the tablet, people took about 10 minutes longer to fall asleep, melatonin was suppressed, the body clock shifted more than 1.5 hours later, and they felt less alert the next morning.3
Dose matters. In another study, two hours of tablet use at full brightness significantly suppressed melatonin, while one hour did not.4 So a short session on a dim screen is a small exposure, while hours on a bright one is not.
Most phones and tablets have a warm “night” mode. It cuts some blue, but the panel is still a blue LED behind a filter. In a study of 167 adults, iPhone Night Shift made no measurable difference to sleep. The people who did best were the ones who used their phones least before bed.5
Reflective LCD (RLCD). A liquid crystal panel with a mirror layer where the backlight would be. Room light or sunlight passes through the crystals, bounces off the mirror and comes back to your eye. The screen gives off no light of its own, so it looks like paper and gets sharper in sunlight. Unlike e-ink, it refreshes at 60 Hz, fast enough for scrolling and video. The Daylight DC-1, the Eazeye Focus and the Eazeye Monitor 2 all use reflective panels.
Amber backlight or front light. A reflective screen goes dark in a dark room, so the tablets add an amber light for evening use. Daylight and Eazeye both say this light has no blue and use DC dimming, which avoids flicker at low brightness.
Incandescent backlight. SpectrumView takes a different approach, replacing the LED backlight of a normal LCD with incandescent bulbs or sunlight. Incandescent light is warmer than a white LED but still contains some blue, and the monitor is bright and gives off heat.
None of the brands here publish a spectrum, a melanopic figure or flicker measurements for their screen’s light, and we found no independent lab measurement of any of them. “Zero blue light” is plausible for a narrow amber LED, but it is still a claim. We rank on published specs, how the screen is lit at night, and independent reviews.
Two practical points the marketing skips:
We have not tested these screens ourselves. Rankings use published specs, how each screen is lit in the dark, independent reviews, price and return terms. Commission never affects rank.
Brown TM, et al. Recommendations for daytime, evening, and nighttime indoor light exposure to best support physiology, sleep, and wakefulness in healthy adults. PLoS Biology. 2022;20(3):e3001571. doi:10.1371/journal.pbio.3001571 ↩
Gringras P, et al. Bigger, brighter, bluer-better? Current light-emitting devices – adverse sleep properties and preventative strategies. Frontiers in Public Health. 2015;3:233. doi:10.3389/fpubh.2015.00233 ↩
Chang AM, Aeschbach D, Duffy JF, Czeisler CA. Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness. PNAS. 2015;112(4):1232-1237. doi:10.1073/pnas.1418490112 ↩
Wood B, Rea MS, Plitnick B, Figueiro MG. Light level and duration of exposure determine the impact of self-luminous tablets on melatonin suppression. Applied Ergonomics. 2013;44(2):237-240. doi:10.1016/j.apergo.2012.07.008 ↩
Duraccio KM, Zaugg KK, Blackburn RC, Jensen CD. Does iPhone Night Shift mode reduce negative consequences of bedtime screen use? Sleep Health. 2021;7(4):478-484. doi:10.1016/j.sleh.2021.03.005 ↩
Reflective tablets such as the Daylight DC-1 and Eazeye Focus give off no light of their own when the backlight is off. They show what the room light reflects. Both add an amber light for dark rooms, which their makers say contains no blue light, though neither has published a spectrum.
No. E-ink moves pigment particles and refreshes slowly. A reflective LCD is a liquid crystal panel with a mirror layer in place of a backlight, so it can refresh at 60 Hz for scrolling and video. Both use ambient light and look like paper.
There is little evidence that it does. In a study of 167 adults, iPhone Night Shift made no difference to sleep. Lowering screen brightness and putting the device down earlier probably matter more than the colour setting.
Only with its amber light on, or with a lamp. With no light the screen goes dark, because it has no light of its own. Use an amber or red lamp at low brightness to keep evening light low.
Many users say they are more comfortable, but we found no controlled trial comparing eye strain on reflective and backlit screens. Taking breaks and matching screen brightness to the room are the advice with the most support.
