Those look about the size of the ones we use at work, though they aren't easy to source - but they happen to fit the cases we use, and we have the cases machined by the manufacturer specifically for them. We've currently got about 110 in stock. We did have a shock the other year, as they were discontinued - but they were replaced by an uprated, identically sized, version
I've used these, if your looking for small. Only 4 alpha/num characters but you can scroll your text and it is actually very readable. The great part is that you just send the ascii character values and the display decodes/displays. made by Broadcom - I think it is a design acquired from HP. Bad news, about $35 each.
Order today, ships today. HDLG-1414 – Dot Matrix Display Module 5 x 7 Green 7-Bit ASCII 0.70" L x 0.79" W x 0.24" H (17.66mm x 20.12mm x 6.10mm) from Broadcom Limited. Pricing and Availability on millions of electronic components from Digi-Key Electronics.
The window area is about 36x10mm.
I have several of them and they work well.
However, I do not know where to obtain any more of them.
I bought a few of them a number of years ago at an electronics flea market in Germany.
Since then I have not seen any for sale in the usual places.