Hi.
The other day I had someone ask about a Hamilton QED where the colons are a bit brighter than the other dots. I explained that rather than being a defect, this was just a characteristic of how some of the displays were built. To show this more clearly, I took a few close up photos which I thought I might share with the DWF (see below).
My impression is that the displays with the brighter "L" shaped colon dots came a bit later than the ones with the smaller rounder colon dots, but I could be entirely mistaken. I'm not sure if they are made by different manufacturers or not - I think both Litronix and Monsanto were building them.
In any case, I find the tiny micro-structure of the early P2/P3 displays kind of amazing with the tiny discrete bars of silicon, each with 5 dots, carefully arranged into tiny digits. If anyone knows how these were made, I'd love to hear the story.
Cheers,
-abe.
Display Variation #1:
DSC_9359 (900x600).jpg
Display Variation #2:
DSC_9366 (900x600).jpg
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