Difference between Beam Penetration and Shadow Mask
Prerequisite – Refresh type output devices
1. Beam Penetration Method :
Beam Penetration Method is quite similar to the normal CRT and it uses only one electron gun. In this, different colors of multi-layered are coated on inner surface of screen, normally the two layers of phosphorus i.e., red and green are coated. It is a method used for displaying color pictures that has been used with random scan monitors.
2. Shadow Mask Method :
Shadow Mask Method is the method which is used in raster scan system which includes color TVs. In this the pixel is made up of three -colors. So due to three colors it uses three electron guns one for producing each color. The colors are red, green and blue. In this the important consideration for a color monitor is the setting of electron guns and the phosphor dots forming a pixel.
Difference between Beam Penetration and Shadow Mask :
Sr. No. |
Basis |
Beam Penetration |
Shadow Mask |
1. |
Colors produced |
In this method, there is the production of only four colors i.e., red, green, yellow, orange. |
In this method, there is the production of millions of colors. |
2. |
Color dependency |
As in this method only four colors are produced it is because of the speed of the electron gun. |
As in this method millions of colors are produced because it depends upon the intensity value of the three available guns. |
3. |
Number of electron guns used. |
In this method, only one electron gun is used. |
In this methods, three electron guns are used; i.e red, green and blue. |
4. |
Picture quality |
As we know in this different colors and shades are not possible. So, it’s picture quality is poor. |
As we know in this different colors and shades are possible. So, it’s picture quality is quite good. |
5. |
Realistic view |
This method is not suitable for providing the realistic view. |
This method is suitable for providing the realistic view. |
6. |
Resolution |
This method provides high resolution. |
Whereas, this method does not able to provide high resolution. |
7. |
Cost |
It is cheaper than shadow mask method. |
It is an expensive method. |
8. |
Application |
It is used in random scan system to display color. |
It is used in raster scan system to display color. |
Last Updated :
04 Jun, 2020
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