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World's Tiniest LED Display Has Pixels Smaller Than a Virus

3 months 2 weeks ago
Scientists at Zhejiang University have created the world's smallest LED display, featuring pixels just 90 nanometers wide -- roughly the size of a typical virus and too tiny to be seen with optical microscopes. The breakthrough, described in Nature this week, uses perovskite semiconductors that maintain brightness even at microscopic scales, giving them an advantage over conventional LEDs. The research team, led by Baodan Zhao, also demonstrated a larger display with pixels measuring about 100 micrometers (human hair width) that successfully rendered images including a spinning globe.

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HP Escapes Customer Payouts in Printer-Bricking Lawsuit Settlement

3 months 2 weeks ago
A United States District Court judge has approved a settlement between HP and customers who sued the company for firmware updates that prevented printers from working with non-HP ink cartridges. The class-action lawsuit, filed in December 2020, alleged HP "wrongfully compels users" to buy only HP ink by issuing updates that block competitors' cartridges. Under the settlement, HP admits no wrongdoing and won't pay monetary damages to affected customers, though it will pay $5,000 each to the three plaintiffs and $725,000 in attorneys' fees. HP has agreed to allow users of specific printer models impacted by the November 2020 update to decline firmware updates containing "Dynamic Security" features -- HP's term for technology that blocks cartridges using non-HP chips. The settlement applies only to 21 specific printer models, leaving numerous other HP printers subject to Dynamic Security restrictions. HP has previously paid millions in similar cases in Europe, Australia, and California related to printer bricking.

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