Basic Principle Of LED Display

LED display is a new type of information display media, which is a flat display screen composed of light-emitting diode dot matrix modules or pixel units. Figure 2 shows the structure of the 8×8 dot matrix LED display. From the figure, the 8×8 dot matrix requires a total of 64 light-emitting diodes, and each light-emitting diode is placed at the intersection of the row line and the column line. , When a corresponding row is set to high level and a certain column is set to low level, the corresponding diode will light up.

For example, when you want to display characters, you can light up the corresponding diodes according to the strokes that make up the characters, so as to achieve the purpose of displaying characters, as shown in Figure 3. The complete dot matrix can be composed of 16×16, 32×32, etc. display modules.