Topic > LCD - 703

LCD LED vs. Plasma vs. LCD CCFLIn the triad of LED LCD, plasma and LCD television technology, which is best? The subject of countless debates and diatribes, the better question is: which works best? Or more precisely, which one works best for you? Each technology has different costs and benefits, and to help you figure out which one is best for you, let's take a look at them. Plasma Display Panel and What It Looks LikeA plasma display panel (PDP) is a type of flat panel display that ranges between 42-65 inches, sometimes even larger. The first plasma display monitor was invented in July 1964 at the University of Illinois, by professors Donald Bitzer and Gene Slottow, but it could only produce green or orange light, and only in 1992 was the world's first color display presented . Now, the largest presented in 2006, in Las Vegas, at an electronics exhibition, measures 103 inches. They are called "plasma" displays because the technology uses small cells containing electrically charged ionized gases, or what are essentially chambers more commonly known as fluorescent lamps. Each pixel is made up of three fluorescent lights, a red light, a green light and a blue light, evenly distributed across the screen. By combining these colors in different proportions and intensities of different lights, the TV can reproduce the entire color spectrum.Figure 2: The three fluorescent lights in each pixel of the plasma TV.VThe central element of a fluorescent light is plasma, a product gas made up of free ions and electrons. Under normal conditions, a gas is made up mostly of uncharged particles, which means that the gas's individual atoms include equal numbers of protons and electrons, so that the net charge is...half of paper...electrodes and cathodes LEDs, which are negatively charged electrodes. In contrast, a traditional LCD television uses fluorescent lamps for backlighting. These lamps work by using mercury vapor to create ultraviolet rays, which in turn cause the lamps' phosphor coating to glow. LEDs have several advantages over fluorescent lamps, including requiring less energy and being able to produce brighter colors on the screen. Difference Between Edge Lighting and Direct Backlight in LED LCD TV. CCFL LCD TVs CCFLs (cold cathode fluorescent lamps) are an older technology, and are currently the most widely used backlights in laptop LCDs. They consist of a fluorescent tube connected to a voltage inverter board that supplies power to the backlight. Sometimes the backlight contains 2 tubes together with 2 pairs of inverters; these are called "Dual Backlights" or 2-CCFL.