iPhone SE screen Ripped off, Now it’s not working

If the cables on your screen ripped off, I would start by replacing the screen here. It includes the cables. As for what an LCD and digitiser are, the screen comes in 2 parts - the LCD and the digitiser. The LCD stands for liquid crystal display, and it is what displays the image on your phone. The digitiser is what converts the analogue movement of your fingers tapping on the glass to a digital input, or in other words, the touch screen sensor. This is just the front glass. The iPhone SE has the LCD and digitiser fused as one, so you will have to replace them both. The attached guide has the link of where to buy the screen. but if you have another supplier or want to go somewhere else, all screens that say they are the LCD + digitiser FULL ASSEMBLY (meaning it comes with the front facing camera as well) for the iPhone SE will work. Unfortunately, as the home button cable is also torn, touch ID will never work again on the phone. This is because the touch ID sensor is paired to the A9 processor in the factory, and only apple can change this. This means you need to buy a new home button in addition to the screen. Hope this helps!