The question is about the number of lines of dots in television technology. While 525 horizontal lines pertain to the old NTSC analog standard, modern LCD televisions have varying resolutions with pixels arranged horizontally and vertically, typically in the thousands.
The television image on standard North American televisions has historically used 525 horizontal lines of dots as part of the NTSC standard. However, this specification is for analog television systems and is not indicative of the pixel count in modern flat screen LCD televisions. In an LCD TV, the image is produced by a large backlight that illuminates through millions of tiny units called pixels.
These pixels are composed of cells with red, blue, or green filters, and the image is formed when the voltage applied to a liquid crystal is adjusted to control the light passing through these color filters. This process allows for the variation of picture contrast to create the image on the screen. The number of lines or pixels in modern televisions depends on the resolution of the display, which can range widely above the old 525 line standard, commonly reaching into the thousands for high definition displays.