Technology is more or less like fashion; trends keep changing in fashion, so is the case in technology. Televisions were once magic boxes that displayed black and white motion images!!! Then evolved colour televisions; later on the evolution was rapid with the entry of various flat screen displays and now it reached a tipping point with wireless televisions that gives access to internet and shortcut access (widgets) to various popular websites. CRT was replaced by Plasma and LCD display technology to replace the obsolete bulky television models with displays having ultra-thin profile. Here comes a new addition to the display technology; O-LED Technology.
OLED Technology
OLED technology is the acronym for Organic Light Emitting Diode Technology. It makes use of numerous layers of organic chemical compounds for displaying the input video signal on- screen. The organic chemical materials used in O-LED technology are emissive; that means the chemical substance emits light when electric current is passed through it. When a voltage is applied on the emissive material, electrons flow through various layers creating a current flow in the device. This inturn stimulates the constituent molecules to emit light. The elementary process behind O-LED is called electrophosphorescence. You may be familiar with this term, as it is a biological phenomenon seen in eons, fireflies, many sea planktons, etc. However researchers synthesised this process non-biologically to formulate O-LED screens.
In O-LED Televisions pixels can be controlled individually by moderating the current flow into each pixel. Hence the brightness level of each picture element can be manipulated precisely to obtain the wicked black level and vivid colour tones. O-LED displays consists of various layers of organic material; do not think that the O-LED screen is a thicker one compared to other prevalent screens. Each layer in O-LED is almost 1/1000th the thickness of a human hair, which makes wafer thin displays possible. There are mainly two types of O-LED displays; passive matrix and active matrix. Passive matrix is used in smaller and cheaper displays like wrist watches, smart cards, etc. while the active matrix is used in more elaborate applications like O-LED Televisions. AMOLED screens are of high demand and is used in many gadgets like mobile phones, laptops, digital cameras, etc.
The major highlight of O-LED technology is the emission of light in Lambertian pattern. One might think of the significance of this statement. According to the optical science, if light is emitted in Lambertian pattern, it appears equally bright and visible from almost all forward directions. This helps to provide images with the same colour intensity, brightness and contrast irrespective of the eye movement of the user. Due to this speciality, users may focus the screen comfortably for prolonged duration which makes O-LED displays more user friendly and healthy. Moreover it is told that O-LED televisions can be used for high quality near eye viewing without straining ones eyes to a large extent. Hence it is of great use for portable computing especially in military services, entertainment applications like gaming console, medical applications and industrial services.
Difference Between LCD and O-LED Technology
LCD(Liquid Crystal Display Technology) is one among the prevailing techniques in display domain. The LCD televisions are in its boom, and the sales are rocketing high day by day. LCD screens are much known for the energy efficiency and picture quality. O-LED Television is a stiff competent for LCD television, which may outsmart LCD with its unique and premium features.
The basic difference between LCD Technology and O-LED Technology is the emissive nature of raw material. LCD is a non-emissive technique; LCD panel does not generate any form of light for/in itself, instead it controls the range and amount of light that hits the users’ eyes. This light is supplied by the backlight settings located behind the display. The non-emissive nature of LCD technology reduces the chances for manufacturing ultra-thin tellies with few millimetres thickness. The thnnest O-LED display(Sony XEL-1 O-LED Television) is 3mm, while the skinniest LCD television(Sony Bravia ZX1 LCD TV) is around 9.9mm. Apart from this, LCD displays are less energy efficient compared to O-LED screens.
O-LED technology is emissive, and creates their own light than depending on a secondary light source. Hence it does not require a separate backlight system. The lack of backlight system in O-LED system reduces its power consumption considerably. The emissive nature also helps to render life-like images with realistic outlook and finest details. Contrast is enhanced in O-LED displays compared to the LCD counterparts, and so is the case with the colour gamut. Wider colour gamut ensures the glossy and vibrant images, especially when it comes to skin tones. WCG also reduces the chances for plastic and artificial appearance in the image.
O-LED televisions are much compact and energy efficient compared to the plasma/LCD Television. OLED is much better than LCD Technology and plasma technology as well. Don’t you think it will be nice to own a telly that is as thin as a wall paper? Or what about a foldable television? Is it possible to develop televisions which are flexible so that we can just roll and keep it in the corner of the living room after use? Sounds like a sci-fi right??? It is all possible with O-LED Technology. Researches are still going on in leaps and bounds to develop a commercial foldable and flexible telly. You can anticipate lots more sweet surprises from this technology, as O-LED is still in its puerility.
