Ghosting on an E-Ink Tablet: Refresh Modes That Fix It and When the Panel Is the Problem

Every e-ink owner meets ghosting sooner or later: a faint shadow of the previous page, a grey smear where a menu used to be, the outline of a keyboard that lingers after you close it. On a dedicated e-reader it is mostly a minor annoyance. On an Android e-ink tablet running apps, it can become bad enough that people wonder whether their screen is faulty.

Usually it is not. Ghosting is a normal side effect of how e-ink updates the screen, and most of it can be controlled with refresh settings. This guide explains why it happens, which settings fix it on common devices, and the signs that point to a genuinely defective panel worth a warranty claim.

Why e-ink leaves ghosts

An e-ink display is made of tiny capsules containing black and white, or coloured, pigment particles. To change a pixel, the controller applies a sequence of voltages, called a waveform, that moves the particles. A full refresh drives every pixel through a complete cycle, typically flashing black and white, which clears any trace of the previous image but is slow and visually distracting. A partial refresh only moves the pixels that need to change, with a shorter waveform. It is faster and calmer, but particles do not always land exactly where they should, leaving faint traces.

Manufacturers balance speed and cleanliness by mixing the two: partial refreshes for most page turns and interactions, with a full refresh every few pages or when the screen changes a lot.

Settings that fix it on common devices

The names differ, but every e-ink device has the same levers.

• Kindle and Kobo: look for a page refresh setting, usually called something like “refresh every page” or “full refresh”. Turning it on refreshes the screen completely on each page turn, eliminating ghosting at the cost of a brief flash. Kobo also lets you set how many pages pass between full refreshes.
• PocketBook: page refresh settings control how often a full refresh happens during reading.
• Android e-ink tablets such as Boox: each app can have its own refresh mode, from high-quality to fastest, and an interval for automatic full refreshes. A manual full refresh is usually available from a gesture, a floating button or the control centre. Use a high-quality mode for reading apps, faster modes for browsers and scrolling apps, and set full refresh every five to ten pages.
• reMarkable and other writing tablets: fewer user settings; they manage refresh automatically. A manual refresh is often triggered by turning the page or changing the view.

In reading apps such as KOReader, the app itself can control full refreshes, which often works better than system settings. App choices on Android e-ink are compared in KOReader vs Moon+ Reader.

Habits that make ghosting worse

• Dark mode. White text on black puts more pixels through bigger transitions and often ghosts more on e-ink than black on white.
• Fast modes left on. Switching a tablet to its fastest mode for a video or a scroll and forgetting to switch back leaves reading apps ghosting badly.
• Apps with animations. Apps designed for LCD screens, with fades, sliding panels and animated buttons, generate constant partial updates. Turn off animations in the app and in Android’s developer options.
• Cold rooms. E-ink particles move more slowly in the cold. Below normal room temperature, the screen updates more slowly and ghosting increases; it recovers when the device warms up.
• Images and greyscale. Photos and shaded diagrams leave stronger traces than text, especially with partial refreshes.

Colour e-ink ghosts more

Colour e-ink panels add a colour filter over a black-and-white layer, or use coloured particles. Both make clean updates harder, and ghosting is generally more visible on colour screens, especially in fast modes and with images. Expect to use full refreshes more often on colour devices, and pick strong colours for highlights so they stay readable after partial updates. How colour highlights hold up outdoors is covered in coloured annotations on e-ink.

Ghosting while writing with a stylus

Note-taking tablets face a special challenge: pen strokes must appear almost instantly, which means using the fastest possible partial updates while you write. Manufacturers use dedicated writing waveforms and sometimes a separate drawing layer for this. The side effect is that erasing, moving or lassoing strokes can leave faint traces until the next full refresh.

Most writing tablets refresh the page automatically when you stop writing, turn the page or switch tools. If traces linger, use the manual refresh, or adjust the device’s handwriting refresh setting where one exists. Heavy erasing on a colour screen is the most common trigger for stubborn ghosts.

Browsers, web pages and scrolling

Web browsing is the hardest case for e-ink. Pages scroll continuously, load images, play animations and show pop-ups, all of which force rapid partial updates. A few changes make it far more comfortable:

• Use the browser’s reader mode, which strips a page to text and simple images.
• Prefer page-by-page scrolling, using volume or page buttons, over smooth swiping.
• Block ads and autoplaying media, which cause constant updates.
• Use a faster refresh mode while browsing and trigger a manual refresh before reading a long article.
• Send long articles to a read-later app or the e-reader’s own reading app instead of reading them in the browser.

Does ghosting damage the screen?

No. Normal ghosting is a temporary display artefact, not wear. Leaving an image on an e-ink screen for days does not burn it in the way older plasma or some OLED screens could, because e-ink holds an image without power. A full refresh clears normal ghosts completely. Persistent marks that full refreshes cannot clear indicate a fault, not overuse.

Choosing a device if ghosting bothers you

If you are sensitive to ghosting, a monochrome screen with a dedicated reading app will always look cleaner than a colour Android tablet running general apps. Devices with physical page buttons also help, because page turns are discrete rather than scrolls. Try a device in person where possible, using the apps you actually plan to use.

When it is the panel, not the settings

Settings fix normal ghosting. Some symptoms point to a hardware problem instead:

• Traces that survive repeated full refreshes. If an image remains visible after several manual full refreshes and a restart, in a warm room, the panel may be damaged.
• Lines, bands or blotches that do not change with content.
• Areas that do not update, stay grey, or update much more slowly than the rest of the screen.
• Problems that started after a drop or pressure, such as a bag squeezing the device. E-ink panels are glass-backed on many devices and can crack internally without visible damage outside.
• Uneven front light is a separate issue from ghosting and usually not fixable with settings.

A ten-minute diagnosis

1. Warm the device to room temperature if it has been somewhere cold.
2. Open the built-in reader with a plain text page and turn on full refresh on every page.
3. Trigger several manual full refreshes.
4. Restart the device.
5. Display a plain white screen and a plain black screen if the device allows, and look for persistent marks.
6. If the problem persists, check for a firmware update and, as a last step, try a factory reset after backing up notes and books.

If marks remain after all of that, contact the manufacturer or seller with photos taken after a full refresh. Note how and when the problem started.

Firmware updates change refresh behaviour

Refresh waveforms are part of the device’s firmware, and manufacturers adjust them over time. An update can make page turns faster, change how often automatic full refreshes happen, or add new modes. Occasionally an update makes ghosting worse in a particular app until it is fixed again. If ghosting changes suddenly after an update, check your per-app settings first, since some updates reset them, then look at the manufacturer’s release notes and community forums before assuming a hardware fault.

Keeping the device updated is generally worthwhile, but wait a few days after a major release on a device you depend on, so early problems can be reported and fixed.

Finding the right balance for daily use

Most people settle on a mix that keeps reading clean without constant flashing:

• Reading text: high-quality partial refresh, with a full refresh every five to ten pages.
• PDFs with images: full refresh more often, or on every page.
• Browsing and scrolling apps: balanced or fast mode, with a manual refresh when you stop to read.
• Writing and note-taking: the device’s writing mode, which most manufacturers tune for low-latency pen strokes, with occasional full refreshes.

Revisit these settings after major firmware updates and whenever you install a new app, since new apps usually start in the device’s default mode.

Spend a few minutes setting per-app modes once, and ghosting becomes a background detail rather than a daily irritation.