Specific laptop models can come in many sizes and resolutions ,backlight type. Laptop LCD resolution should not be upgraded or downgraded. You must confirm that this screen matches your laptop in SIZE , in RESOLUTION and in BACKLIGHT TYPE to order the right screen.

Certain laptop models come in different screen sizes, resolution and backlight. For example, Dell M1330 may have LED or CCFL backlight. Compaq R3000 was released with 15" or 15.4" screen size and these are not interchangeable. Macbook Pro 15" comes in different screen resolutions and they are not interchangeable as well.
You have to check if your laptop screen has the same SIZE, RESOLUTION, BACKLIGHT prior to ordering to avoid incompatibility issues.

Tips: We suggest choosing Dell screens by laptop model or making sure the screen comes with the inverter (see the screen description). No inverter is needed for LED screens.

1. How to measure Screen size?

 Screen size is measured in inches diagonally from corner to corner as you can see in the

picture below.

TIPS:1 inch=2.54 cm.

measure size

 There are different laptop screen sizes according to the standard: 

screen_sizes

2. How to find out resolution?

 IMPORTANT! Please, confirm screen resolution before buying! Certain laptop models come in different screen resolutions. You have to make sure that the screen you need has the same resolution as the one you are buying. Screen resolution refers to just how many pixels are crammed onto your screen all at once.

    Put simply, a pixel is a little colored dot of light, many of which go together to make up what you see on your computer monitor. The same laptop model may come in different screen resolutions and listed below are the most commonly used ones:

XGA         1024x768

SXGA       1280x1024

SXGA+     1400x1050

UXGA       1600x1200

QXGA       2048x1536

WXGA      1280x720; 1280x768; 1280x800; 1360x768; 1366x768

WXGA+    1440x900

WSXGA+  1680x1050, 1680x945

WUXGA    1920x1200, 1920x1080

TIPS: "W" - means wide screen with the Aspect Ratio 16:10.

There are several ways to find out your screen resolution.
1. Refer to you laptop manual. It should usually be in the laptop specs section. That's the most reliable way.
2. If the manual is not available, you may check the laptop manufacturer's website and find the laptop specs in the Support & Help section using your laptop serial number or model.
Please, search Google for your laptop manufacturer name to find their website.
3. If your computer is up and running, you can check your resolution on-line. Please, note that this on-line tool tells your screen resolution and it only makes sense if you did not change factory default screen settings in Windows or Mac OS.
On-line Resolution Check.
4. The best way to find out which screen you need is to open the display and check the screen model name on the sticker on the back side of the screen. You can also search Google for the screen model to find size and resolution.

3.How to find which one is in your laptop

Laptop screen may come in different backlight types. Single and Dual backlights use CCFL (fluorescent bulb) to light up the imageand require an inverter to power up. LED backlight doesn't require an inverter and uses light-emitting diodes as a source of light.

1. Single backlight means that there is only one bulb, that lights up the screen and the screen has only one inverter connector. This type of backlight is the most common one. Please, see the picture below:
1-ccfl

 2. Dual backlight means that there are two bulbs in the screen and the screen has two inverter connectors. This type of backlight is not very common. Please, see the picture below:

2-ccfl

3. LED backlight used in some recent laptop models and LED screens doesn't have an inverter cable and normally has only one socket to connect a video cable (see picture below).

LED BACKLIGHT

LED backlight is a relatively new feature, it will usually be mentioned in your laptop specs. Check your laptop tech specs to find out if yours has LED backlight. 

dell led