Shenzhen Lianchengfa Technology Co., Ltd.

At present, LED display screens are more and more widely used, and the technological development is becoming more and more sophisticated. Do you know the display methods of full-color LED displays? Next, Liancheng sent the editor to take everyone to take a look!

1. Static display mode of LED display

The static display mode of the LED display means that when the full-color LED display displays a certain character, the corresponding light-emitting diode will appear in two forms: constant on or constant off. This display method requires that the common terminals of each display block be constantly grounded or connected to a positive power supply. The 8 segment selection lines of each display block are respectively connected to the 8-bit port lines of an 8-bit parallel I/O port. As long as the I/O port has a segment code output, the corresponding characters will be displayed and kept small until I/O output new segment code.

When using a static display method, a small current can get a high brightness, and it takes up less CPU time, and programming is easy, but because each LED display must be equipped with a parallel The output port occupies a lot of I/O port resources, thereby increasing the cost of the hardware, so this method is not the first choice when the actual number of digits is large.

2. Dynamic display mode of LED display

For the dynamic display method, each display is lighted one by one in turn, and this method of lighting the display one by one is called bit scanning. This display method requires that the segment selection lines of each display are connected in parallel, which is mainly controlled by an 8-bit I/O port; while the bit selection lines of each display are controlled by another I/O port line. When this method is displayed, each monitor is strobed in turn. To make it display stably, it must adopt the scanning method. That is to say, at a certain moment, we only strobe one monitor and send it to the corresponding Segment code, carry out appropriate delay (probably the delay time is about 1-5ms), and then select another display, and will send the corresponding segment code, so that the full-color LED display can be made Each display on the screen displays the corresponding characters. If the cycle time can be guaranteed to be short enough, the persistence of vision effect of the human eye can be used to give people a sense of display.

3.LED display electrostatic protection measures

It is also very important to take anti-static measures for LED displays. Today, Liancheng sent a small editor to discuss several important measures for electrostatic protection.

1. Sources of static electricity: The sources of static electricity that affect the circuit mainly include the human body, plastic products and related equipment and instruments. Among them, the static electricity sources from the use environment include the following items:

① Object, material

②Floor, work tables and chairs

③Work clothes, packaging containers

④ Painted or waxed surfaces, organic and fiberglass materials.

⑤ Concrete floors, painted or waxed floors, plastic floor tiles or floor leather.

⑥Chemical fiber work clothes, non-conductive work shoes, clean cotton work clothes.

⑦Plastic, packaging boxes, cases, bags, trays, foam pads.

The above is the relevant knowledge of the display mode of the full-color LED display that Liancheng sent to you. I hope it will be helpful to you. At the same time, you are welcome to add or correct me. Lianchengfa is a world-leading provider of LED display applications and solutions, as well as a national-level professional and special new small giant enterprise. The main business covers four major sections: "Smart City", "Cultural Tourism Commercial Performance", "Commercial Display Engineering", and "Content Technology". It has the world's leading automated production equipment, modern post-doctoral research laboratories and comprehensive sales and services. team. Friends who want to buy LED displays can also contact us Lianchengfa led display manufacturer, a big country brand, trustworthy!