How does an LCD screen find individual pixels?

Each pixel on a monitor screen is addressed using a combination of row and column coordinates. This system is similar to how you would address a cell on a spreadsheet.

Grid Structure: The monitor screen is divided into a grid of horizontal rows and vertical columns.
Row and Column Numbers: Each row and column is assigned a unique number.
Pixel Addressing: To address a specific pixel, you provide its row and column numbers. For example, the pixel at the top-left corner would have the coordinates (0, 0), where 0 represents the first row and the first column.
Example:

Resolution: Suppose a monitor has a resolution of 1920x1080 pixels.
Pixel Addressing: The pixel at the top-right corner would be addressed as (0, 1919), indicating the first row and the 1920th column.
Addressing Methods:

Raster Scan: This is the most common method used in modern displays. The electron beam sweeps across the screen, line by line, from top to bottom, lighting up pixels according to their address.
Random Access: While less common, some specialized displays, like digital light processing (DLP), can address pixels directly without scanning. This allows for faster image updates.
Factors Affecting Pixel Addressing:

Resolution: Higher resolution means more pixels, requiring a more complex addressing system.
Pixel Pitch: The distance between pixels affects the overall image quality and the precision of addressing.
Display Technology: Different display technologies (e.g., LCD, OLED) may have varying addressing mechanisms.
In essence, each pixel on a monitor screen has a unique address based on its position within the grid of rows and columns, allowing the display to control the color and brightness of individual pixels to create images.