Comparison CRT / LCD

Cathode Ray Tubes

Liquid Crystal Displays (LCDs)

Advantages

• Fast repsonse (high resolution possible)

• Full color (large modulation depth of E-beam)

• Saturated and natural colors

• Inexpensive, matured technology

• Wide angle, high contrast and brightness
  

Advantages

• Small footprint (approx 1/6 of CRT)

• Light weight (typ. 1/5 of CRT)

• Low power consumption (typ. 1/4 of CRT)

• Completely flat screen - no geometrical errors

• Crisp pictures - digital and uniform colors

• No electromagnetic emission

• Fully digital signal processing possible

• Large screens (>20 inch) on desktops

Disadvantages

• Large and heavy (typ. 70x70 cm, 15 kg)

• High power consumption (typ. 140W)

• Harmful DC and AC electric and magnetic fields

• Flickering at 50-80 Hz (no memory effect)

• Geometrical errors at edges

Disadvantages

• High price (presently 3x CRT)

• Poor viewing angle (typ. +/- 50 degrees)

• Low contrast and luminance (typ. 1:100)

• Low luminance (typ. 200 cd/m2)