diff --git a/components/display/index.rst b/components/display/index.rst
index 60431b81b..affb1db57 100644
--- a/components/display/index.rst
+++ b/components/display/index.rst
@@ -507,6 +507,8 @@ Configuration variables:
     per pixel, 8 pixels per byte.
   - ``GRAYSCALE``: Full scale grey. Uses 8 bits per pixel, 1 pixel per byte.
   - ``RGB24``: Full RGB color stored. Uses 3 bytes per pixel.
+  - ``TRANSPARENT_BINARY``: One color, any pixel that is fully transparent will not be drawn, and any other pixel
+    will be the on color. Uses 1 bit per pixel, 8 pixels per byte.
 
 - **dither** (*Optional*): Specifies which dither method used to process the image, only used in GRAYSCALE and BINARY type image. Defaults to ``NONE``. You can read more about it `here <https://pillow.readthedocs.io/en/stable/reference/Image.html?highlight=Dither#PIL.Image.Image.convert>`__ and `here <https://en.wikipedia.org/wiki/Dither>`__.