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.
How to Find What Type of Laptop I Have. Identifying the make and model of your Windows 7 or Windows 8.1 laptop is usually as simple as finding the logo on top and the model number somewhere on the bottom. To find the model number on some laptops, you have to remove a small plate cover or -- in some cases -- the entire bottom cover. However, if your laptop is entirely unmarked, you can use the Windows Control Panel or the System Information tool to see all the details of your laptop, including specifications.