Infrared patch LEDs (Infrared LED arrays) are a type of LED that emits infrared light. They are widely used in various applications, such as remote control, communication, and security systems. In this article, we will introduce the infrared patch LEDs industry, including their working principles, types, applications, and market trends.

Introduction to Infrared Patch LEDs

Infrared patch LEDs are a group of LED devices that can emit infrared light. They are made of semiconductor materials, such as gallium arsenide (GaAs), gallium phosphide (GaP), and indium phosphide (InP). The working principle of infrared patch LEDs is based on the forward bias of the PN junction. When the forward voltage is applied to the PN junction, electrons and holes are injected into the active region of the semiconductor material, and through the recombination of electrons and holes, photons are emitted, which form infrared light.

Types of Infrared Patch LEDs

There are mainly two types of infrared patch LEDs: surface mount infrared patch LEDs and through-hole infrared patch LEDs. 1. Surface mount infrared patch LEDs: These are mounted on the surface of the circuit board, with a small size and light weight. They are suitable for high-density assembly and can be used in a variety of applications, such as remote control and wireless communication. 2. Through-hole infrared patch LEDs: These are mounted through the holes on the circuit board, with a relatively large size and high power. They are suitable for applications requiring higher power output, such as security systems and industrial control.

Working Principle of Infrared Patch LEDs

The working principle of infrared patch LEDs is based on the forward bias of the PN junction. When the forward voltage is applied to the PN junction, electrons and holes are injected into the active region of the semiconductor material. Due to the recombination of electrons and holes, photons are emitted, which form infrared light. The wavelength of the emitted infrared light is determined by the energy gap of the semiconductor material.

Applications of Infrared Patch LEDs

Infrared patch LEDs have a wide range of applications, including: 1. Remote control: Infrared patch LEDs are widely used in remote control devices, such as TVs, air conditioners, and projectors. They can send signals to the remote control receiver to control the corresponding devices. 2. Communication: Infrared patch LEDs are used in wireless communication systems, such as infrared data association (IrDA) and wireless infrared communication. They can transmit data over short distances, with high data rates and low power consumption. 3. Security systems: Infrared patch LEDs are used in security systems, such as infrared burglar alarms and infrared motion sensors. They can detect the movement of objects in the dark and send signals to the control unit to trigger alarms. 4. Industrial control: Infrared patch LEDs are used in industrial control systems, such as infrared communication modules and infrared sensors. They can transmit signals between devices or detect the presence of objects in the working environment.

Market Trends of Infrared Patch LEDs

The market for infrared patch LEDs has been growing steadily in recent years, driven by the rapid development of the electronics industry. The following are some of the market trends: 1. Miniaturization: As the demand for high-density assembly increases, the size of infrared patch LEDs is gradually shrinking, which helps to reduce the space requirements of electronic products. 2. High-power output: With the increasing demand for high-power applications, such as security systems and industrial control, high-power infrared patch LEDs are becoming more and more popular. 3. Energy-saving and environmental protection: As people pay more attention to energy-saving and environmental protection, infrared patch LEDs with lower power consumption and longer life are becoming the trend. 4. Intelligentization: The integration of infrared patch LEDs with sensors and microcontrollers is becoming more and more common, which promotes the development of intelligent systems. In conclusion, infrared patch LEDs have a wide range of applications and a promising market前景. With the continuous innovation of technology and the expansion of the market, infrared patch LEDs will play a more important role in the future.