Television and Radio |

How Plasma Displays Work

For the past 75 years, the vast majority of televisions have been built around the same technology: the cathode ray tube (CRT). In a CRT television, a gun fires a beam of electrons (negatively-charged particles) inside a large glass tube. The electrons excite phosphor atoms along the wide end of the tube (the screen), which causes the phosphor atoms to light up. The television image is produced by lighting up different areas of the phosphor coating with different colors at different intensities

Cathode ray tubes produce crisp, vibrant images, but they do have a serious drawback: They are bulky. In order to increase the screen width in a CRT set, you also have to increase the length of the tube (to give the scanning electron gun room to reach all parts of the screen). Consequently, any big-screen CRT television is going to weigh a ton and take up a sizable chunk of a room.

A new alternative has popped up on store shelves: the plasma flat panel display. These televisions have wide screens, comparable to the largest CRT sets, but they are only about 6 inches (15 cm) thick. In this article, we’ll see how these sets do so much in such a small space.

If you’ve read How Television Works, then you understand the basic idea of a standard television or monitor. Based on the information in a video signal, the television lights up thousands of tiny dots (called pixels) with a high-energy beam of electrons. In most systems, there are three pixel colors — red, green and blue — which are evenly distributed on the screen. By combining these colors in different proportions, the television can produce the entire color spectrum.

The basic idea of a plasma display is to illuminate tiny, colored fluorescent lights to form an image. Each pixel is made up of three fluorescent lights — a red light, a green light and a blue light. Just like a CRT television, the plasma display varies the intensities of the different lights to produce a full range of colors.


TV on the Radio

Some people know what they want and try really hard to get it,” says TV on the Radio multi-instrumentalist Dave Sitek. “We’d rather write a song about robots fucking.” This oddball aesthetic is apparent on the band’s debut CD, Desperate Youth, Blood Thirsty Babes, a cool collage of electronic fuzz, jazz skronk, doo-wop vocals and dark pop.

The group’s mishmash of styles can be credited, in part, to singer Tunde Adebimpe’s unusual upbringing. Adebimpe spent several years of his childhood in Nigeria, where his father worked as a social worker. “We’d listen to Fela Kuti, and Indian and Pakistani music,” he says. “I remember getting a copy of the Beach Boys’ Smile and not being able to wrap my head around it. I loved it, but I was just like, ‘Is it music?’ ” After high school, Adebimpe moved to New York to pursue a filmmaking career. He rented a room in Brooklyn with Sitek, who was selling acrylic paintings and producing local bands such as the Yeah Yeah Yeahs and Liars.

“He was a weird motherfucker,” Sitek says of Adebimpe. “There was no question we were gonna do something together.” The two made some demos, took their name from a friend’s random suggestion and set out gigging after adding Kyp Malone as another noisemaker (the band recently added a drummer and a bassist for its live shows).

TVOTR recorded much of Desperate Youth by improvising for hours, then picking out the best parts. Unable to play an instrument, Adebimpe used a pedal that allowed him to sing over his own beat-boxing. But for its entire chaotic sprawl, the album is still a coherent paean to youthful confusion.

Despite the band’s surprise success, Sitek claims TVOTR don’t plan on getting more professional. “We don’t have the attention span to find the ‘right’ way of doing things,” Sitek says. “And we’re highly susceptible to caffeine.”