CRTnäyttöissä

CRTnäyttöissä, or Cathode Ray Tube displays, were the standard type of electronic visual display technology for television sets and computer monitors for many decades. These displays work by firing a beam of electrons from an electron gun at the back of a vacuum tube. This electron beam is then scanned across the phosphorescent screen at the front of the tube. When the electrons strike the phosphor coating on the inside of the screen, they cause it to emit light, creating the image we see. The color in CRTnäyttöissä is produced by using three electron guns, one each for red, green, and blue light. These beams are modulated to control the intensity of each color at each point on the screen, combining to form the full spectrum of colors. A shadow mask or aperture grille is used to ensure that the electron beams strike the correct color phosphor dots or stripes. While once ubiquitous, CRTnäyttöissä have largely been replaced by newer technologies such as LCD (Liquid Crystal Display) and OLED (Organic Light-Emitting Diode) due to their bulkiness, power consumption, and lower resolution capabilities compared to modern alternatives. Despite their obsolescence in many consumer markets, CRTnäyttöissä were instrumental in the development of visual display technology and remain in use in some specialized applications.