The LCD ( Liquid Crystal Display ) displays the image on your iPad using the same technology as most flat screen TV's. LCD units are generally very fragile and susceptible to damage.
Common faults / issues with LCDs include:
- Screen looking washed out, very dull colours and less clarity then usual
- Dead pixels - When a pixel on the LCD no longer works, usually visible on a white background it will be a tiny black square
- Stuck pixel - When a pixel is stuck on a colour, usually visible on any background and will generally be stuck on white, green, blue or red.
- No backlight - When the backlight on the LCD fails the picture can be very hard or impossible to see.
- Lines on the LCD - these can be a variety of coloured lines displaying either horizontally and / or vertically
- Damaged LCD, generally damaged LCDs can be bruised, cracked or "bleeding" when a black liquid is visible over the picture
- In modern touch screen devices digitizers are fitted over the LCD and respond to touch, these are separate to the LCD, replacing the LCD wont cure issues with the touch panel.