Glossary – Philips 220E User Manual
Page 64
                                    Advertising
                                    
                                        
                                    
                                
                                 
Glossary
O
Q
W X Y Z
A
Active matrix
This is a kind of liquid crystal display structure in which switching transistors are attached to each 
pixel to control the on/off voltage. It produces a brighter and sharper display with a broader viewing 
angle than a passive matrix display. Also refer to TFT (thin film transistor).
 
Amorphous silicon (a-Si)
A semiconductor material that is used to make the thin film transistors (TFTs) layer of an active 
matrix LCD.
 
Aspect ratio
The width-to-height ratio of the active area of a display. In general, most monitors have an aspect 
ratio of 4:3. Wide monitors or TVs have an aspect ratio of 16:9 or 16:10.
Backlight
                                    Advertising
                    
                        
                    
                            
                            
                    This manual is related to the following products: