Notes regarding the DIN EN ISO 13406-2 standard
Permanently unlit or lit pixels
The standard of production techniques today cannot guarantee an absolutely fault-free screen display. A few isolated constant lit or unlit pixels (picture elements) may be present. The maximum permitted number of pixels faults is stipulated in the stringent international standard ISO 13406-2 (Class II).
Example:
A 17" or 19" flat-screen monitor with a resolution of 1280 x 1024 has 1280 x 1024 = 1310720 pixels. Each pixel consists of three subpixels (red, green and blue), so there are almost 4 million subpixels in total. In accordance with ISO 13406-2 (Class II), a maximum of 6 pixels and 7 subpixels may be faulty.
Pixel | A pixel consists of 3 subpixels, normally red, green and blue. A |
| pixel is the smallest element that can be generated by complete |
| functionality of the display. |
Subpixel | A subpixel is a separately addressable internal structure within a |
| pixel that enhances the pixel function. |
Cluster | A cluster contains two or more defective pixels or subpixels in a |
| 5 x 5 pixel block. |
22 | A26361-K1063-Z121-1-7619, edition 1 |
