This has become a common display type for mid-range to high-end phones. OLED/AMOLED. OLED & AMOLED utilizes 'organic' LEDs which emits light and in the majority of cases does away with the need for the back-light of an LCD display resulting in a potentially thinner panel.
1 The model number is located on a small label located on the frame around the computer screen. (e.g., VGN-FW550F)  The computer information and compliance label, located on the bottom of the laptop case, indicates the actual model number.
With most versions of macOS, you can find your computer's serial number and model information in the About This Mac window. Choose Apple menu (ï£¿) > About This Mac. The window that appears lists your computer's model nameâfor example, MacBook (Retina, 12-inch, Early 2016)âand serial number. You can then use your serial number to check your service and support options or to find tech specs for your model.