Common problems and product categories of LED strips


Published Time:

2021-08-04

A light strip refers to LEDs that are soldered onto copper wire or flexible printed circuit boards using special processing techniques. They emit light when connected to a power source, and are named as such because their shape resembles a strip of light.

I. LED Strip Lights and Their Principles:

LED strip lights are created by soldering LEDs onto copper wires or flexible printed circuit boards (FPC) using special processing techniques. They are then connected to a power source to illuminate. They are named as such because their illuminated form resembles a strip of light. Early manufacturing methods involved soldering LEDs onto copper wires, then covering them with PVC tubing or directly molding them using equipment. These came in round and flat shapes, with names based on the number of wires and shape: two wires were called "two-wire," round ones were "round two-wire," and flat ones were "flat two-wire." Later, flexible printed circuit boards (FPCs) became the preferred substrate because they simplified the manufacturing process, provided better quality control, offered longer lifespans, and produced brighter, more vibrant colors. This method has gradually replaced earlier techniques and become the standard.

 

  The core of a light-emitting diode (LED) is a chip composed of p-type and n-type semiconductors. Between the p-type and n-type semiconductors is a transition layer called the p-n junction. In the PN junction of certain semiconductor materials, when injected minority carriers recombine with majority carriers, the excess energy is released as light, directly converting electrical energy into light energy. When a reverse voltage is applied to the PN junction, minority carriers are difficult to inject, so it does not emit light. This type of diode, made using injection electroluminescence, is called a light-emitting diode, commonly known as an LED. When it is in a forward-biased state (i.e., a forward voltage is applied across it), and current flows from the LED anode to the cathode, the semiconductor crystal emits light of various colors from ultraviolet to infrared, with the intensity of the light depending on the current.

 

II. Main Features and Advantages of LED Strip Lights:

1. Flexible, can be curled like a wire.

2. Can be cut and extended.

3. The bulb and circuit are completely encapsulated in flexible plastic, providing good insulation and waterproofing, ensuring safe use.

4. Strong weather resistance.

5. Not easily broken, long lifespan.

6. Easy to create shapes and lettering; currently widely used in decoration and lighting for buildings, bridges, roads, gardens, courtyards, floors, ceilings, furniture, automobiles, ponds, underwater, advertising, signs, logos, etc.

 

III. Classification of LED Strip Lights:

1. Based on flexibility: LED soft strip lights (Flexible LED Strip Light) and LED rigid strip lights;

2. Based on LED specifications: common types include 5050 LED strip lights, 3528 LED strip lights, 0603 LED strip lights, 3020 LED strip lights (all surface mount LED strip lights); there is also a type called LED Great Wall strip lights.

3. Based on length: common lengths include 5 meters, 1 meter, and down to several centimeters. The length of LED strip lights is generally customizable.

4. Based on application: there are automotive LED strip lights and LED strip lights for decoration in hotels, KTVs, bars, etc. Automotive LED strip lights are usually shorter in length.

  LED strip lights have many uses, the most common being as decorative lights, such as for car underbody lighting, hotel/KTV/bar decoration, and home decoration.

 

IV. How to Use LED Strip Lights:

LED soft strip lights are used in home lighting, commercial lighting, and some special lighting applications. They are extremely popular and widely used LED lighting products, and more and more people are choosing them for decoration and lighting.

 

Because LED soft strip lights are a new type of environmentally friendly lighting product, many people are not fully aware of how to use them. Improper use can damage the product. Therefore, we will explain the installation and usage of LED soft strip lights here. Instructions for use are as follows:

1. The power voltage should match the voltage indicated on the LED soft strip light, and a suitable fuse should be installed.

2. If the light body is damaged, immediately cut off that section and do not continue to use it to avoid danger.

3. During use, do not cover the LED soft strip light with any objects.

4. For flashing or gradient effects, use an LED controller.

5. During installation, do not use wire or other metal materials to tightly bind the light tube, as this may cause the wire to become embedded in the LED soft strip light, leading to a short circuit or burnout.

6. The connections must be secure and free of short-circuit risks. For outdoor installations, all connections must be sealed with silicone sealant to prevent water ingress.

7. Only LED soft strip lights with the same specifications and voltage can be connected in series; the total length should not exceed the maximum allowable length.

8. When installing LED strip lights in cold weather, turn on the power for a few minutes to soften the lights, making them easier to bend, then turn off the power before installing.

9. Do not power the strip lights during installation or assembly. Only connect the power after the connection and installation are completed correctly.

10. Although LED soft strip lights can be cut freely, they can only be cut at the locations marked with scissors on the strip light. With the increasing popularity and widespread use of LED soft strip lights, consumers must follow the correct installation and maintenance methods to ensure efficiency and bring energy-efficient and environmentally friendly lighting to their homes.