Comparison of different display technology

This article is about comparing different display technologies. We will compare OLED, LCD and CRT and will give pros and cons for each technology.

LCD means liquid crystal display and its technology is widely used in modern television screens or computer displays. LCDs are non-organic and non-emissive devices, that means they do not produce any form of light. They just pass or block light reflected from an external light source. This is called a backlighting system. Because of this backlighting system LCDs are consuming more power than OLED displays.

OLED displays consume much less power, simply because no backlighting is needed. In addition, they have a higher contrast and are brighter than LCDs. OLED allows thinner, lighter and more flexible designs, the viewing angle is wider (up to 160 degrees and above). This is because they produce there own light, whereas LCDs need a backlight.

CRT means cathode ray tube. It is the old traditional technology used in computer or television screens. A cathode ray tube is like an electronic vacuum tube employing a focused beam of electrons. Displays with CRT technology are cheap to produce and have a wide viewing angle. Manufacturing of LCDs is more cost-intensive than producing CRTs, but the power consumption is lower and the smaller design allows thinner products. LCDs are emitting fewer electromagnetic emissions than CRTs.

OLED seems to be the perfect technology, but there are also some disadvantages we want to mention. The lifetime is limited, especially those of blue organics. Manufacturing is at this time more cost-intensive than producing LCDs. Water can easily damage OLEDs, so complex sealing is necessary.

Despite these small disadvantages OLED is emerging the new technology for thin panel displays.