How to Churn Out Cheap LED Lighting

A startup in California has developed a manufacturing technique that could substantially cut the cost of LED lightbulbs—a more energy-efficient, but also more expensive, type of lighting. LEDs are conventionally made on a relatively costly substrate of silicon carbide or sapphire. Bridgelux has come up a new process takes advantage of existing fabrication machines used to make silicon computer chips, potentially cutting LED production costs by 75 percent, according to the company.