Thread: New(?) 4.3 inch ereader: B3404 ereader
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Old 09-23-2020, 04:39 PM   #20
rcentros
eReader Wrangler
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Location: Boise, ID
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In case anyone is interested, here's a link to the company who makes the screens for this BK4304 (and several other "BK" eReaders). They are a much lesser known competitor to E-Ink, Inc. and they call their technology O-paper.

http://oedtech.com/English/support/i...?menuid=030301 (Intro)

http://oedtech.com/English/support/i...?menuid=030302 (more info)

http://oedtech.com/English/product/c...enuid=03020101 (products)

In the last link you'll see the BK4304 on the right edge of the picture. You'll also see the O-paper specs. I've read somewhere that they are basically the same as the E-Ink Pearl screens. (Same contrast ratio 12:1.)

Good information page on E-Ink (and O-paper) screens here. E-Carta has a 15:1 contrast ratio.

https://e-ink-reader.ru/display_en.php
Last edited by rcentros; 09-23-2020 at 04:43 PM.
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