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 identify Dell computer model using the model code. If your Dell computer only displays a model code in System Setup program or on the Dell startup screen, use this reference list to determine your computerâs model name. In 2005, the System Setup program on certain Dell Dimension, Inspiron and XPS computers was changed to display a model code instead of the computer model name. The Resource and Driver CD also lists the computer by the code. Knowing both your computerâs model code and model name is helpful when updating drivers and other software. Dimension.