The display is the most expensive component in most laptops. In April 2005, Negroponte hired Mary Lou Jepsen—who was interviewing to join the Media Arts and Sciences faculty at the MIT Media Lab in September 2008—as OLPC Chief Technology Officer. Jepsen developed a new display for the first-generation OLPC laptop, inspired by the design of small LCDs used in portable DVD players, which she estimated would cost about $35. In the OLPC XO-1, the screen is estimated to be the second most expensive component (after the CPU and chipset).