Where to find 10 or 12 digit numeric LCD displays? - Page 1
Forum section: electronics / general

author: pjhenley
author_rank: Contributor
timestamp: October 27, 2019, 01:50:39 am
content: Even cheap-o calculators will have 10 or even 12 digit lcd 7-segment displays, but who makes them? I would think this would be a commodity item enough to buy them off the shelf, but I'm not finding them. Thanks in advance for any links.

author: coromonadalix
author_rank: Super Contributor
timestamp: October 27, 2019, 02:46:02 am
content: Are you talking of one line by ten digits ??You have standard hd44780 lcds 1x8, 1x16, 1x20, 2x16, 2x8 .....I had one 10 digits lcd serially controlled, it was for an frequency counter kit ... it had all the logic on it.Trying to find it or post a linkI think it was this onehttps://www.ebay.com/itm/2-PCS-with-Arduino-Code-10bit-16-Seg-SPI-LED-LCD-Display-Module-TM1622-HT1622-/233319691250

author: artag
author_rank: Super Contributor
timestamp: October 27, 2019, 09:29:53 am
content: 44780 is for dot-matrix displays : not normally used for calculators.I had one or two older 4-digit LCDs - they appeared to be made to stack end-to-end for arbitrarily long displays. Again, though, I think that would be more in testgear or larger height displays than calculators normally use so not much help if you want a smaller display.I do think most smaller displays would be custom. But I'm surprised there aren't generic ones too.

author: voltsandjolts
author_rank: Unknown
timestamp: October 27, 2019, 11:25:28 am
content: 10 digit alphanumerics are fairly common on ebay, with SPI interface (TM1622 or HT1622)e.g.https://www.ebay.com/itm/283572857977

author: mariush
author_rank: Super Contributor
timestamp: October 27, 2019, 12:26:22 pm
content: 8 digit 7 segment and 14 segment are common - you can find them everywhere, but if you want to order them from a company like Digikey, they're not quite cheap at around ~2.5$ for 100ex:https://www.digikey.com/product-detail/en/varitronix/VIM-878-DP-RC-S-LV/153-1115-ND/1118605ex:https://www.digikey.com/product-detail/en/varitronix/VIM-878-DP-FC-S-LV/153-1113-ND/1118603For bigger sizes, I suppose you can custom make them, or contact one of those companies (Varitronix, New Haven, others you see at various distributors) and see if maybe they already did a custom one for another customer and you could order a batch... you'd probably have to order a minimum of 250 or 1000, something like that.As an alternative, you have those dot matrix or graphical displays with LCD controller... you can get a 16x1 or 96..128 x 16..32 graphical and you can even buy them with COB chip if you need thin

author: coromonadalix
author_rank: Super Contributor
timestamp: October 27, 2019, 01:56:25 pm
content: Unless the OP only want the glass lcd, no board or interface under it ??

author: pjhenley
author_rank: Contributor
timestamp: October 28, 2019, 10:33:40 am
content: Quote from: coromonadalix on October 27, 2019, 01:56:25 pmThat's it. I really only need the bare glass without a pcb and driver chip.Quote from: mariush on October 27, 2019, 12:26:22 pmI think that's exactly what I'll have to do. I'll contact a few places and see if I luck out. Hopefully there won't be any issue with sharing another company's design.