> For the complete documentation index, see [llms.txt](https://docs.sevenpens.com/drawtab/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sevenpens.com/drawtab/guides/pen-displays/etched-glass.md).

# Etched glass

## Overview

Etched glass is one of two popular treatments for the glass surface of a pen display. The other is called an [anti-glare film](/drawtab/guides/pen-displays/anti-glare-film.md).

"Etched glass" describes a microscopic texture applied to a glass surface.

Etched glass provides two benefits:

* It reduces glare and reflections caused by light hitting the tablet. Etched glass does this by scattering that light.
* It provides more "grip" for the pen. Without the etching, a pen would feel "slippery" on the smooth glass surface.

<figure><img src="https://1457921496-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FNde0PQIvNcFZNVxuTO0G%2Fuploads%2FxFdO7rNP1CfFazcYk7wW%2Fimage.png?alt=media&amp;token=ef3df5b7-f7c4-48a9-a78c-2ae85b73df57" alt="" width="563"><figcaption></figcaption></figure>

## Sparkle

Like other anti-glare treatments, etched glass can produce an effect called **anti-glare sparkle**, which is a "rainbow noise" effect. Depending on the tablet, there will be a little or a lot of this sparkle. Learn more here: [Anti-glare sparkle](/drawtab/guides/pen-displays/ag-sparkle.md).

## Permanence

Etched glass is a permanent treatment to the glass. It cannot be removed.