Screen backlight type. How to find which one is in your laptop.
Three ways to find out what type of light is in the screen of your laptop:
1. Take the screen out of the laptop and see the back of it: if there is a cable and a connector for the inverter, you have a CCFL screen, if the connector is not present, then the screen is LED.
2. Refer to the owners manual of the laptop.
3. Contact the manufacturer of the laptop or find the information on it's website.
LCD panels are divided into two types according to the backlight type CCFL and LED.
These two types of screens have completely different connectors and power supplies. They are not compatible.
CCFL (Cold Cathode Fluorescent Light - High Intensity Discharge Lamps)
- This type of lighting is used in older laptops. Usually it comes with one lamp, more ralely - two, this type of backlight needs an inverter (high voltage transformer) to power it's lamp(s)
CCFL single lamp has only one power plug, and this type of CCFL screens are more widespread:
CCFL with two lamps has two power connectors, and it is much more rare than single bulb:
LED (Light Emitting Diodes - LED Backlight)
- This type of lighting has been widely used in the early 2010s. It consists of Light Emitting Diodes and is considered more energy efficient. Such screens do not need an inverter, that's why they only have a video connector.
For step by step video instructions on How to replace the screen in a laptop click here.