The main source of light is behind the subject, silhouetting it, and directed toward the camera.
Backlighting provides a clear display of objects or living things standing in front of the light, by increasing the light and illuminating the dark part when part of the image is bright and part is dark.
There are basically two types of backlight structures
1. The edge-type backlights are mostly used for small size LCDs including cell phones, laptops and monitors.
2. Shows the structure of edge-type CCFL backlight for laptops and monitors including all parts backlight components.