A much more serious issue exists, however. The Switch uses an LCD screen and therefore dead pixels could pose a problem. A dead (defective) pixel is any pixel that doesn't work and appears as a dark dot, or is stuck on a particular color and appears as a bright dot. The "what classes as a defect" policy for dead pixels varies from company to company, with many stating X number of dead pixels being a trigger for defect classification. These policies can also take into account where the pixels are located on a display and how many are clustered together.