Ultraviolet rays generated by Emits light by an electric Emits light by Emits light by sending an current collide Principle of applying a voltage applying a voltage electric current with light emission to an inorganic to organic matter to a metallic fluorescent semiconductor filament material to produce visible light Illuminates large Size of area Illuminates area (surface light illuminated is small area Illuminates small source) between point (point light area (point light Energy efficient light source source) source) Low and surface High power Energy efficient generation light source Characteristics consumption Long life Slim, lightweight (linear light High Easy to reduce Flexible (when source) size plastic substrate Energy efficient Closely Environmentally used) Uses hazardous approximates sound Environmentally substance natural light sound (mercury) Applications Photographic Indirect lighting, include living Living spaces, lighting, living floor level spaces, offices, offices, Uses spaces such as lighting, spotlights decorative commercial dining rooms or for retail spaces, illumination, car premises, etc. bedrooms, etc. etc. interior lighting, Advantages OLEDs are thinner, lighter and more flexible than the crystalline layers in an LED or LCD. The plastic, organic layers of an OLED are 100 to 500 nanometres thick or about 200 times smaller than a human hair. They are brighter than LEDs because the organic layers of an OLED are much thinner than the corresponding inorganic crystal layers of an LED. Also they do not require glass for support which absorbs some light. It has ability to emit light from a surface, low heat generation, and environmentally sound compared to fluorescent lamps.
Principle of light emission Emits light by applying a voltage to organic matter Emits light by sending an electric current to a metallic filament Ultraviolet rays generated by an electric current collide with fluorescent material to produce visible light Emits light by applying a voltage to an inorganic semiconductor Characteristics Illuminates large area (surface light source) Energy efficient Low Slim, lightweight Flexible (when plastic substrate used) Environmentally sound Illuminates small area (point light source) High power consumption High Closely approximates natural light Size of area illuminated is between point light source and surface light source (linear light source) Energy efficient Uses hazardous substance (mercury) Illuminates small area (point light source) Energy efficient Long life Easy to reduce size Environmentally sound Uses Applications include living spaces, offices, decorative illumination, car interior lighting, Photographic lighting, living spaces such as dining rooms or bedrooms, etc. Living spaces, offices, commercial premises, etc. Indirect lighting, floor level lighting, spotlights for retail spaces, etc. Advantages OLEDs are thinner, lighter and more flexible than the crystalline layers in an LED or LCD. The plastic, organic layers of an OLED are 100 to 500 nanometres thick or about 200 times smaller than a human hair. They are brighter than LEDs because the organic layers of an OLED are much thinner than the corresponding inorganic crystal layers of an LED. Also they do not require glass for support which absorbs some light. It has ability to emit light from a surface, low heat generation, and environmentally sound compared to fluorescent lamps. generation