What is one of the main disadvantages of an LCD (Liquid Crystal Display)?

One of the main disadvantages of an LCD (Liquid Crystal Display) is indeed poor black levels. This is primarily due to the technology used in LCDs, which relies on a backlight illuminating the pixels. When the content displayed requires black, the liquid crystals in the display do not completely block the backlight, resulting in dark grays instead of true black. This can lead to lower contrast ratios and less vibrant colors, significantly impacting the overall viewing experience, particularly in darker scenes or images.

While the other aspects of LCDs, such as cost or design, might also be relevant, they do not impact the display quality as directly as black levels do. For instance, newer LCD technologies may mitigate viewing angle limitations or thickness, and costs can vary widely based on build quality and brand, so they are less universally applicable disadvantages compared to the inherent limitations in achieving true blacks in the display.