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.
The model name (for example, HP Officejet Pro 8000) can be found using one of the other methods listed in this document. The specific model number (for example, A809a) is located near the cartridges or inside the cartridge door. You might need to open the cartridge door to access the model number.