Defective pixel
Defective pixels are pixels on a liquid crystal display (LCD) not performing as expected. ISO 13406-2 distinguishes between three different types of defective pixels:
- Hot pixels (always on)
- Dead pixels (always off)
- Stuck pixels (one or more sub-pixels are always on or always off)
Similar defects can also occur on CCD or CMOS image sensors in digital cameras.
In these devices, defective pixels fail to sense light levels correctly, whereas defective pixels in LCDs fail to reproduce light levels correctly.
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