B-TIER resource
Sharp Memory Display — per-pixel memory LCD for low-power hardware
100k ft — What is this?
Sharp Memory Display — per-pixel memory LCD for low-power hardware
50k ft — Why care?
Sharp memory displays store each pixel's state, so they only need a tiny maintenance signal. That makes them near e-paper in power, reflective for sunlight readability, yet fast enough for ~50fps, as on the Playdate.
10k ft — Key takeaways
• Faster than e-paper and readable outdoors
• Pick it for battery projects with mostly static screens
5k ft — Tools & techniques
Sharp Memory Display
memory-in-pixel
1k ft — Deep-dive / try it
This is such a cool display, I have so many ideas on what to make with it. It’s a sharp memory display! #hardware #electronics
Transcript excerpt
This is a Sharp memory display. At first glance, it looks just like another tiny LCD, but it's actually a completely different kind of screen. A normal LCD has to constantly refresh the image, redrawing the entire display over and over again even if nothing changes. That's fine for phones and monitors, but it wastes a surprising amount of power. Our Sharp memory display works differently. Every pixel stores its own state, so once you draw something, it simply stays there. It's very similar to an e-paper screen. The display only needs a tiny maintenance signal in the background which makes it incredibly power efficient. Another thing I love is that it's reflective instead of backlit. So the brighter it is outside, the easier it is to read. Playdate, for example, uses a Sharp memory display and can run it up to 50 frames per second. That makes it a really interesting middle ground. You can get fast updates like a normal LCD, excellent outdoor visibility like e-paper, and low power consumption whenever the image is mostly static. It's a really clever display.
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