Answer: D, "Modern LCD monitors generally use LED backlight technology."
Answer analysis:
Regarding the statement about the backlight of modern LCD monitors, we can analyze the following options one by one based on the information in the reference article (the specific content of A, B, C, and D is not directly given in the question, but I will infer based on the common statement):
A. The backlight of LCD monitors is mainly provided by cold cathode tubes or hot cathode tubes:
This statement is partially correct but not comprehensive. Although both cold cathode tubes and hot cathode tubes have been used for the backlight of LCD monitors, modern LCD monitors more widely use LEDs (light-emitting diodes) as backlight sources. LED backlight technology has higher brightness, lower power consumption and longer life, and has become the mainstream of the market.
B. The material of the backlight panel of the LCD monitor has no effect on the display effect:
This statement is wrong. The material of the backlight panel of the LCD monitor has a great influence on the display effect. Factors such as the luminous efficiency, uniformity, viewing angle and brightness of the backlight panel are all affected by the material. For example, PMMA (polymethyl methacrylate) is widely used in backlight panel production due to its light transmittance, weather resistance and impact resistance, while hard glass is another high-quality choice due to its high reflectivity, high wear resistance and high light transmittance.
C. The higher the backlight brightness of LCD monitors, the better:
This statement is not entirely correct. Although high-brightness backlights can improve the brightness and contrast of LCD monitors, too high brightness will also increase power consumption and may cause visual fatigue.
Therefore, when choosing an LCD monitor, the appropriate backlight brightness should be selected according to the actual use environment and needs.
D. Modern LCD monitors generally use LED backlight technology:
This statement is correct. With the advancement of technology and changes in market demand, LED backlight technology has become the mainstream choice for modern LCD monitors. LED backlight technology not only improves the brightness and contrast of monitors, but also reduces power consumption and extends service life.
In summary, the correct option for the statement about the backlight of modern LCD monitors is D: "Modern LCD monitors generally use LED backlight technology." This statement is in line with the actual situation of current market and technological development.