As LCD monitors become the display of choice, the performance standard for colour displays has increased dramatically. Clear delivery of a wider range of colours and more realistic images are key performance benchmarks that Acer has addressed via improved LED backlight technology. The backlight source greatly affects colour saturation, hue and appropriate colour temperature, which ultimately influence the realism of colours seen by the user.
Why is the LCD backlight source important for colour saturation?
• Brightness, contrast, and response time enhance LCD monitor performance, but the critical factor for colour reproduction is the LCD backlight module. • Different LCD backlight sources result in variable lighting performance, especially in terms of colour reproduction, measured as colour saturation. • The performance of LCD backlight modules can be measured in terms of percentage area of the colour space standard. For example, the most popular light source, CCFL (cold cathode fluorescent lamp), can only reach around 72% NTSC (the most popular standard for colour saturation measurement). In reality, however, image sources may well exceed 72% NTSC. Such is the case with the colourful flowers pictured to the right. The images of these flowers reproduced on a LCD monitor cannot fully reflect the image quality of the source without technological enhancements. Acer’s improvements in LCD backlight technology aim to bring LCD colour reproduction up to the level of related technologies such as digital cameras.
Colour space standards for saturation ratio
• There are different colour space standards used to measure colour saturation. Three such standards are the NTSC (National Television System Committee), sRGB (as defined in the ITU.BT 709 standard with an area similar to NTSC), and Adobe RGB (a standard introduced by Adobe Inc. with a colour reproduction area greater than sRGB). • Colour space standards differ in terms of the ratio of the area: the wider the area, the richer the colour. |