A team of researchers from National Central University (NCU) in Chungli, Taoyuan County, has developed a new LED encapsulation technology that has been touted as the world’s most advanced.
Sun Ching-cherng (孫慶成), director of NCU’s department of optics and photonics, said in Taipei yesterday that the new technology developed by his team would enhance the LED color-rendering index (CRI) to 90.
The CRI is a quantitative measure of the ability of a light source to reproduce the colors of various objects faithfully in comparison with an ideal or natural light source, with 100 being the highest CRI attainable.
Most fluorescent lamps on the market have a CRI of between 80 and 85.
Sun said his team had developed a phosphor optical model that can predict precisely the color temperature of different phosphor compounds. With this model, Sun said, his team developed a two-light optical model that led to a phosphor formula capable of producing white light with a CRI of more than 90.
He said the technology would help local LED producers reduce defects and give them an advantage in the field of white LED production.
Stephen Garrett, a 27-year-old graduate student, always thought he would study in China, but first the country’s restrictive COVID-19 policies made it nearly impossible and now he has other concerns. The cost is one deterrent, but Garrett is more worried about restrictions on academic freedom and the personal risk of being stranded in China. He is not alone. Only about 700 American students are studying at Chinese universities, down from a peak of nearly 25,000 a decade ago, while there are nearly 300,000 Chinese students at US schools. Some young Americans are discouraged from investing their time in China by what they see
MAJOR DROP: CEO Tim Cook, who is visiting Hanoi, pledged the firm was committed to Vietnam after its smartphone shipments declined 9.6% annually in the first quarter Apple Inc yesterday said it would increase spending on suppliers in Vietnam, a key production hub, as CEO Tim Cook arrived in the country for a two-day visit. The iPhone maker announced the news in a statement on its Web site, but gave no details of how much it would spend or where the money would go. Cook is expected to meet programmers, content creators and students during his visit, online newspaper VnExpress reported. The visit comes as US President Joe Biden’s administration seeks to ramp up Vietnam’s role in the global tech supply chain to reduce the US’ dependence on China. Images on
New apartments in Taiwan’s major cities are getting smaller, while old apartments are increasingly occupied by older people, many of whom live alone, government data showed. The phenomenon has to do with sharpening unaffordable property prices and an aging population, property brokers said. Apartments with one bedroom that are two years old or older have gained a noticeable presence in the nation’s six special municipalities as well as Hsinchu county and city in the past five years, Evertrust Rehouse Co (永慶房產集團) found, citing data from the government’s real-price transaction platform. In Taipei, apartments with one bedroom accounted for 19 percent of deals last
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