First released in October of 2008, the Unibody MacBook and MacBook Pro systems were the first systems that includes a glass cover installed on top of the LCD screen. There's all kinds of arguments out there about whether this glass is a good or bad thing, but for today's discussion we'll skip that topic. What I want to show you is how to tell if your glass cover is broken, your LCD or both.
Step 1: MacBook Broken Screen - Step 1 - Broken Glass
The most common type of screen breakage on a unibody MacBook or MacBook Pro is glass damage. The glass cover that is on top of the LCD screen usually takes the brunt of the damage and cracks with impact.
The glass cover is actually one piece of thin glass, sandwiched between two layers of plastic film. This means that when your glass breaks, little pieces typically will not fly everywhere (this is a good thing), but rather, the screen will "spider-web" with cracks showing up all over.