Flat screens show their true colors: Innovative pigments from BASF improve television image quality скачать в хорошем качестве

Flat screens show their true colors: Innovative pigments from BASF improve television image quality

Liquid crystal displays, better known by the abbreviation LCDs, are everywhere: in TVs, laptops, smartphones or navigation systems. The images on a liquid crystal display with the standard resolution are made up of about two million picture elements, better known as pixels. The color filter pigments attached to the liquid crystal cells are what give each pixel its color. Every pixel contains the three primary colors red, green and blue. The colors are composed of tiny crystals about a thousand times smaller in diameter than a human hair. The crystals act as a filter for the white backlight and only allow light waves from a selected range of the visible spectrum to pass through. These light waves show one of the three colors in its purest possible form. The basic principle is simple. When the color red appears on the screen, the corresponding subpixel lets the red portion of light pass through and absorbs the rest. The other two subpixels – for blue and green – are deactivated when this happens. If, on the other hand, light penetrates through the red and green subpixel while the blue is deactivated, the colors combine to give a rich yellow. Fine-tuning the portions of the three primary colors in this manner produces millions of hues.