Red, green, and blue colors are produced by exciting the respective phosphor. The colors black, white, and gray with a sketch of a pixel from each.
A sample color block and a sketch of a pixel from the block is shown below for each of these three colors. Gray parts of the screen have all three phosphors producing light, but at a much lower intensity. On a white section of a screen all three phosphors are excited and produce light with about the same relative intensities as in sunlight so the light appears white. When no electrons strike the phosphors of a computer screen the phosphors emit no light and the screen appears black. The three separate phosphors produce red, green, and blue light, respectively.Ī sketch of a pixel showing the red, green and blue color produced by the three phosphors.īlack, White, and Gray: Nothing, All, or Some
The phosphors emit light when struck by the electron beams produced by the electron guns at the rear of the tube. A monitor or TV screen generates three colors of light (red, green, and blue) and the different colors we see are due to different combinations and intensities of these three primary colors.Įach pixel on a computer screen is composed of three small dots of compounds called phosphors surrounded by a black mask. The most recent time I had the issue the screen was flashing white for a little then stopped flashing and stayed white but had these faint grey squares everywhere on the screen all while I can still move the cursor around.Color from a computer monitor or a TV screen results from a different process than that due to reflection or transmission by a solid or solution. One thing I have tried is to boot up the PC without the Ethernet attached, when doing this it seems fine and boots up normal with no crazy flashing screen. This has only started happening for the last week or so, before that its been like a year and a half and my PC has been fine. To fix the issue I have to hard restart the PC using the small reset button on the PC case next to Power button, when I do this the computer just comes on normally and the picture on screen is perfectly fine. The white screen seems to have like black artifacts to it sometimes and just flashes from black constantly, however through all this i can still move the mouse around and see the cursor as it it is. When I boot from a shutdown PC it turns on, POSTS then goes past windows Windows 10 boot logo but then immediately goes to a flashing white screen.
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