I. Product Introduction
A dual-color LED screen is an LED display capable of displaying two different colors, typically red and green. A dual-color LED display generally consists of two colors of LED light-emitting diodes (LEDs). Different colors of LEDs can be used to create different display screens. A dual-primary-color LED display consists of red and green LEDs, and by controlling grayscale, it can display red, green, and yellow. A pseudo-color display consists of red, yellow-green, and blue. Dual-color LED screens are commonly used in applications requiring distinct colors to convey information or messages, such as traffic signs, parking guidance systems, price displays, and information boards. They offer high brightness, good visibility, and high energy efficiency.
II. Technical Classification and Characteristics
LED displays can be classified by the number of colors they display: monochrome, dual-primary-color (two-color), and tri-primary-color (full-color). A dual-primary-color LED display consists of red and green LEDs. By controlling the brightness and grayscale of different LEDs, it can display red, green, and yellow. A dual-primary-color display with 256 grayscale levels can display 65,536 colors.
A dual-color LED display screen refers to a display screen capable of displaying red and green, as well as mixed colors (such as yellow). Its characteristics include vivid colors, effectively conveying information through color differentiation. It offers diverse display modes, supporting various content formats such as images and videos. It features high brightness, good visibility, and high energy efficiency. It has a long lifespan. The operating system is relatively simple.
III. Product Advantages
1. Rich Colors: Composed of red and green LEDs, a dual-color display screen with 256 grayscale levels can display 65,536 colors (a dual-color screen can display red, green, and yellow);
2. High Brightness: Utilizes high-brightness LEDs, remaining visible even at long distances;
3. High Reliability: Employs distributed scanning technology and modular design technology;
4. Display Effect: Uses non-linear correction technology, resulting in clearer images and stronger sense of depth;
5. Diverse Display Modes: Supports multiple display modes, such as images, videos, and animated GIFs;
6. Operation: Can be operated using common video playback software.
7. Lifespan: The LED dual-color display screen has a long lifespan.
IV. Product Testing
1. Power Module Debugging: After powering on, use a digital multimeter to measure the output voltage, microcontroller operating voltage, and crystal oscillator start-up voltage.
2. Program Download Module Testing: Connect a parallel cable or USB data cable to the 10-pin socket and check the device. See if the program can be downloaded to the target board.
3. LED Dot Matrix Module: Write a program to scan all rows and columns of the dot matrix, light up all the LEDs, first displaying red, then green, and finally combining the two colors.
V. Product Applications
Dual-color LED displays are available for indoor and outdoor use. They can be used in various occasions such as airports, subways, stations, docks, squares, commercial centers, supermarkets, chain stores, restaurants, banks, wedding photography studios, exhibitions, large stadiums, train waiting rooms, live television broadcasts, exhibition halls, performing arts centers, entertainment venues, large-scale cultural performances, and concerts. For example, they can be used in traffic lights to indicate 'go' and 'stop', or in parking lots to display available and occupied parking spaces. In recent years, due to its advantages, dual-color LED displays have been purchased in increasing quantities in various venues and have been widely used in the market.
