How LED are make?

It is sure you are habituated to coexist in your daily life with LED technology, sometimes even unknowingly. Lighting of that restaurant you were and liked so much, the atmosphere so cozy of that hotel where you spent the holidays… LED technology is able to create unforgettable, healthy and economical and energy efficient environments. But … have you ever ask you how a LED is made? At Goodwork we tell you.

What is a LED?

LED (an acronym for “Light Emitting Diode”) is a semiconductor diode whose main characteristic is to convert the low-voltage electric current through its chip into light. The first LED was developed in 1927, although it was not until the decade of the sixties when it was used for commercial purposes. Since then, research in this sector has not ceased and LED lighting is now considered the most efficient form of lighting, being used in many devices that bring a higher quality of life to our day to day.

At its beginnings, the main use of this technology was limited to the manufacture of the red LED, which was given the use of indicating whether an electrical or electronic equipment was connected to the electric current, or was in functioning. Later they began to make informative panels with LED lighting.

Innovation has made it possible today to manufacture LEDs with the ability to reproduce all the colors of the visible spectrum of the human eye. At Goodwork as an LED manufacturer, we are continuously working on LED chip design and research that significantly increases its light efficiency.

From a physical point of view, in the manufacture of a LED, we find a miniaturized bulb, devoid of filament or any other type of harmful element or material, which is one of the great advantages of LED lighting over other technologies which pollute the environment. A LED has a solid construction, so it has greater resistance to shock and vibrations.

Composición de un componente LED

The color emitted by each diode depends fundamentally on the semiconductor material that has been used in the manufacture of the LED. Each chemical compound of the semiconductor material used in the manufacture of an LED allows the emission of a light of a specific color corresponding to a particular wavelength of the electromagnetic spectrum visible to the human eye.

The light-emitting chip is the main part of an LED and is enclosed in a transparent or tinted polyepoxide (resin) wrapper or capsule of the same color as the light it emits. These can have different shapes and sizes. From the chip split two terminals that cross its base and go outside to connect to a direct current electric circuit, so that the LED is directly polarized. When the LED is new, the shortest terminal corresponds to the negative (-) pole of the chip, while the longest corresponds to the positive (+) pole.

The chip is the main component of LED lighting and its quality depends not only on the consumption and the duration of the lamp but also the color and intensity of the light./

How is a LED manufactured?

The manufacture of an LED is based mainly on the creation of the chip. The substrate or semiconductive base is elaborated on which the rest of components will be applied later.

This base is a wafer of about 15 cm in diameter, usually of silicon carbide or sapphire that is formed in a chamber at a high temperature and pressure and on which different elements are worked depending on the characteristics of the light that If desired. Mainly:

  • Indium and Gallium Nitride (InGaN): for blue light.
  • Aluminum, indium and gallium (AllnGaP): for warm light with yellow, orange and red tones.
  • Gallium phosphide (GaP): for yellow and green light.

High temperatures and pressure causes the elements to liquefy to a solution. A liquid layer of boron oxide (liquid encapsulation) is used to escape the gas. When the elements are mixed in a uniform solution, a bar is introduced and it is removed very slowly. The solution is cooled and the crystallizations formed at the end of the bar.

The wafers are cleaned by a chemical and ultrasonic process. It is very important that all dirt and dust are removed for best results.

Then comes the process of epitaxy, which is used in the manufacture of an LED with all kinds of chips, in which the layers necessary for the correct functioning of the LED with these deposited materials are formed.

Then the wafer is divided into tiny rectangles, which are the chips themselves. These chips undergo rigorous quality tests to verify that the intensity, color and brightness of the light is the required. At Goodwork, as LED manufacturers, we use high quality and efficient chips, such as the Nichia or CREE, which use materials that offer superior performance. Goodwork LED strips, for example, reach a power and efficiency level of a total of 5.670 lumens / meter and a light efficiency of 236 lm / w, higher than the average LED manufacturers in Spain.

Do not hesitate and move to LED with Goodwork.

Do you know to choose your LED strips?

We are habituated to see how LED strips can be a great primary source of lighting, as there are high power and intensity; and also it can be a secondary light source, to create enveloping and cozy atmospheres depending on each space or moment. But… ¿Do you know what a LED strip is?

Not all LED strips are the same. There are very significant differences in the quality of the chips, resistors and coatings that are true, can sometimes increase the price, but the quality and durability of the LED strip will also do so considerably. And as we know, many times, cheap is expensive.

Main advantages of LED strips:

• Easy and convenient installation without residue.

– They have a powerful 3M adhesive.

– They adapt to any surface.

– They adapt to any height, width and length.

– They are connected directly to the power grid using a transformer. We will help you to make the calculation of suitable transformers so that you do not spend too much money. LED strips can generally operate at 12V or 24V direct current.

The controllers are required to adjust the color tones and modes on the RGB LED strips and the dimmer option controls the intensity of both, monochrome and RGB strips. They can be fixed or by remote control with remote control.

– Suitable for indoor and outdoor use, depending on the degree of IP protection.

• Save money and energy. With the LED strips you will save up to 80% of energy compared to traditional lighting, which will be transmitted directly in a down payment of your electricity bill. This technology allows to use practically all the energy consumed in the creation of light and not of heat, like the classic illumination, for that reason its efficiency is more than proven.

• Custom projects and a multitude of application possibilities. At Goodwork we are able to manufacture the LED Strips with the exact measurements according to the requirements and needs of each project.

What can we use LED strips for?

– Replacement of fluorescent tubes (more light than with the classic tube).

– Office lighting.

– Residential lighting.

– Lighting of cabinets, ceilings, shelves, corridors and emergency exits.

– Artistic and decorative lighting.

– Showcases and facades.

– Energy saving programs.

However, LED strips are increasingly applied to more places, due to their decorative effect, low consumption and great versatility. With the GoodworkLED strips you can also have a high color rendering index (CRI <90, compared to <70 for other LED strips on the market).

In Goodwork we also have a wide range of profiles for LED Strips. A LED strip profile consists of a piece of aluminum or DMF inside which we can install our flexible LED strip and cover it with a plastic lid. They are suitable for both RGB and monochrome LED strips and there are several types of coatings with different finishes: transparent or translucent.

Now that you know some advantages about LED strips… do you know how to choose the ideal LED strip for you? At Goodwork we give you four points that you should keep in mind when you buy your LED Strips.

1.) Number of LED chips and distance between them

One of the first things to keep in mind when buying an LED strip is the number of LED chips on the strip and the distance between them. Goodwork LED strips have up to 420 LED chips per meter, which means seven times the number of other LED strips on the market. The lack of “natural” luminosity in cheaper LED strips is often artificially increased by using LED that feed with higher amperage. This has a negative effect on the lifespan of the LED.

The number of LED per strip depends on the lens and consumer preferences. What is certain is, that a greater number of LEDs per meter, greater brightness and homogeneity than chips too far apart, not only affect luminance, but also cause unsightly cones of light.

It is fundamental to know the type of chip that has our LED strip:

– SMD 3528 (3.5mm x 2.8mm): each LED emits between 6 and 7 lumens

– SMD 5050 (5.0mm x 5.0mm): each LED emits between 18 and 20 lumens

– SMD 2835 (2.8mm x 3.5mm): each LED emits between 22 and 24 lumens

– SMD 5630 (5.6mm x 3.0mm): each LED emits between 40 and 45 lumens

At Goodwork we can offer you LED strips with a high level of power and efficiency, such as the GW Flex Strip Ultra which has 126 LEDs / meter making a total of 5,670 lumens / meter and a luminous efficiency of 236 lm/w.

2.) PCB or Printed Circuit

The printed circuit connects each LED chip and supplies them with power. Since the circuit is made of copper and is one of the most expensive elements of the strip, saving is produced by reducing the amount of copper used.

This results in poor heat dissipation and, as a result, LED strips fail much earlier. Look for LED strips with larger and thicker circuits, as they will be much more durable. You will notice that the better quality LEDs dissipate the heat more efficiently and the strips do not bend as easily. At Goodwork we can offer LED strips with a PCB from 5mm to 30mm.

3.) Resistances

There are LED strips that are equipped with small resistors and this additionally charges the chips. As a result, its lifepasn is shortened.

The Goodwork LED strips carry the right resistances, so you get a strip with a long lifespan and excellent light output.

4.) Coating:

LED strips, over time, may have cracks along their brittle coating. Apart from the fact that its aesthetic appearance leaves much to be desired, this creates a health and safety problem as there are exposed parts and you can notice the harmful odor of the plastic since one enters the room.

Goodwork LED Strips have a stable and odorless coating and consist of different degrees of IP protection: IP20, IP65, IP67 and IP68.

Now that you have learned all about different types of LED strips and their qualities, do not hesitate and move to LED with Goodwork.

Meet Goodwork

At Goodwork, a leading company in the field of LED lighting and light optical fiber, we have been LED manufacturers since 1994, the year in which the company was founded in Argentina and later moved to Spain in 2002.
Since then, we have worked decisively without losing sight of our most important challenge: to satisfy your needs, always offering you the best solution. At Goodwork, we put the same passion into realizing our lighting projects as our clients put into their business ideas.
We have been providing lighting to businesses for many years and there are many brands that have placed their trust in us throughout this time to carry out their lighting projects.


Every day we combine the latest advances in technology and innovation with a team of professionals who advise you concerning the importance of light in our lives.
A team of professionals who will give you exclusive and personalized attention and will accompany you in advising, planning and executing each lighting project with a dynamic and resolute approach, in order to find the right solution for every need.

Our graphic engineering department, using the necessary technical equipment and specific software tools, performs Dialux studies and lighting designs on AutoCad files.

We also have a mobile unit (which circulates around the city like any other vehicle), which captures in record time all the data necessary for the complete study of photometry prior to a lighting project.

The mobile unit is completed with:

  • High-precision GPS navigation
  • Spectrometer
  • Stereographic camera
  • Luxmeters
  • Data storage system

Another of our outstanding services is Goodwork Lighting Academy, the training and the technical assistance that we offer to the workers so that they feel highly qualified in the realization of any lighting project. Through our department we will provide you with the necessary knowledge to carry out effective lighting designs.


Your visual comfort is the most important thing for us. Thanks to our continuous research work together with engineers, architects and designers, we have developed lamps that meet the highest quality standards. We have patents (such as GW Street Plate) and unique state-of-art designs in LED.

We manufacture LED lighting that reach more than the average efficiency than any other lamp that can be found on the market. All our products, besides being aesthetic and functional, are ecological and reduce consumption by 80%. Reducing energy consumption is not just saving money, it is promoting economic, political and environmental sustainability.


We have optimized production and consumption processes to provide you with the most competitive solutions and to create efficient and cost-effective lighting projects. We produce more, with less. Because it is not a question of illuminating less, but of enlightening better.
In addition, we have a firm commitment to the environment. This, together with investment in innovation and technology, are the fundamental pillars of Goodwork’s policy and philosophy. Our goal is to maximize efficiency and savings.


As LED manufacturers we have specialized in retail, industrial, public and corporate lighting. We have been official distributors of the Carrefour Group since 2008 with our indoor lamps GW Eco Moonlight and GW Cylinder.

We also specialize in lighting projects on public roads. Numerous city councils have endorsed us and have counted on us to carry out the traditional LED lighting in order to reduce consumption, increase well-being and be closer to a truly smart city.

We have realized custom made lighting projects in municipalities such as Mejorada del Campo in Madrid; Cambrils, in Catalonia; Morella, in Castellon; Loriguilla, Llíria, Bétera and Paiporta in Valencia. These are projects in which our wide range of lampposts such as GW Vialia, GW Villa, GW Konikal, GW Lira, GW Cube, etc. Have been used. Luminaires you can find in our range of street lighting.

In all of these towns they already enjoy an illumination that satisfies the needs of security and comfort, both for pedestrians and drivers. In the case of the city of Morella (in Castellón), obtained the award of“The most beautiful town of Spain”, after being illuminated by Goodwork.

In addition to LED manufacturers, we are passionate about architecture and it is our pleasure to highlight the innate beauty of the place. We paint with light creating enveloping and fascinating environments. A sample of this are the lighting projects of the Montblanc wall with the GW Light Bar, or the Town Hall Square Valencia, with the GW Power Whaser, an example of our outdoor lamps.

We firmly believe that LED technology is not only the future, it is the present. Do not hesitate and move to LED with Goodwork.