Cyril Hilsum, the 101-year-old British physicist who helped invent flat-panel display technology, died on September 23. Hilsum led the team at the Royal Radar Establishment that developed crucial materials for liquid crystal displays, enabling the screens in modern flat-panel televisions, laptops, and smartphones. The son of East End London street vendors, Hilsum was an prolific inventor. His work produced semiconductors used in remote controls, automatic doors, burglar alarms, and bar-code scanners. Radar technology developed under his leadership led to the Claribel device for detecting snipers in Northern Ireland and radar speed detectors. His daughter, TV foreign correspondent Lindsey Hilsum, noted he was a materials scientist focused on applications, not theory. He famously avoided fresh vegetables, subsisting on TV dinners, chocolate, and red wine. In the late 1960s, Hilsum shifted from radar to tackle the instability of liquid crystals, helping create stable cyanobiphenyls that made thin, energy-efficient screens possible. His contributions transformed electronics from bulky cathode ray tube monstrosities into the slim devices prevalent today.
His work addressed the fundamental problem of cathode ray tubes becoming "more and more exposed as a dinosaur," as he wrote in 2010. The development of stable liquid crystals allowed for digital watches, pocket calculators, and eventually the pocket-sized devices defining modern life. Hilsum's legacy is etched into every smartphone and laptop screen, a testament to his role in shrinking the television from a Buick-sized object to a slender panel.
He is survived by his family and a legacy of inventions that reshaped global infrastructure and consumer technology, proving that a single physicist's determination can alter the physical dimensions of the modern world.
Source: New York Times Business · Summarized by HeadlinesBriefing