Free shipping on orders over $99.99

The truth about LED Headlight Bulbs

Posted by on

LED Headlights represent the future of automotive lighting. They have great advantages over all other forms of auto lighting. There exist several myths surrounding this new form of lighting. To clear all doubts, it’s necessary to know what these lights actually are and how they work. So let’s find out.
LEDs or Light Emitting Diodes are made from very thin layers of semiconductor material. One layer has an excess of electrons, while the next would have a deficit. This difference causes the electrons to move from one layer to another, thereby generating light. Manufacturers now have the technology to make these layers as thin as .5 micron or less. A micron is equivalent to a ten-thousandth of an inch.

Impurities within the semiconductor create the required electron density. A semiconductor is a crystalline material that conducts electricity only when there’s a high density of impurities. A slice or wafer of a semiconductor is a single uniform crystal, and the impurities are later introduced during the process or manufacture. The particular semiconductors used for LED manufacture are gallium arsenide (GaAs), gallium phosphide (GaP), or gallium arsenide phosphide (GaAsP). The different semiconductor materials called substrates and different impurities result in different colours of light from LED bulbs.
Impurities, unlike imperfections, are introduced deliberately for the desired LED function, a process is called doping. The impurities commonly introduced are zinc or nitrogen, but silicon, germanium, and tellurium have also been used. They cause the semiconductor to conduct electricity and make the LED function as an electronic device. It’s through impurities that a layer with an excess or a deficit of electrons is created.
To complete the function, it is necessary to introduce electricity to it and from it for which, wires must be attached to the substrate. These wires need to stick well to the semiconductor and give enough strength to withstand subsequent processes such as soldering and heating. Gold and silver compounds are the most commonly used for this purpose as they form a chemical bond with the pallium at the surface of the wafer.

One method of adding the necessary impurities to the semiconductor crystal is to grow additional layers of crystal onto the wafer surface. In this process, known as ‘Liquid Phase Epitaxy’, the wafer is put on a graphite slide and passed underneath reservoirs of molten GaAsP. Contact patterns are exposed on the surface of the wafer using photoresist, after which the wafers are put into a heated vacuum chamber. In the vacuum chamber, molten metal is evaporated onto the contact pattern on the wafer surface.
LEDs are encased in transparent plastic, similar to the lucite paperweights that have objects suspended within. The plastic could be of multiple varieties, and its exact optical properties would determine the output of the LED. Some plastics are diffusive, which means the light will scatter in many directions. Some are transparent and can be shaped into lenses that would give a focussed light directed straight out from the headlight in a narrow beam. The plastics can be tinted, which would change the colour of the LED by allowing more or less of light of a particular colour to pass through.
Newer materials are being developed to someday allow production of coloured and white light LEDs. LED car headlight bulbs produce brighter light with greater penetration.

automobile industry automotive lighting car accessories Car interiors car parts custom headlights fog lamps headlight headlight bulbs Installation of a LED kit laser headlights LED LED Backup Light Bulbs led bulbs LED lights sealight

← Older Post Newer Post →


  • The advancement and design is improving daily, the spear design is the best so far. Auxito is one manufacturer that is on top of it.

    Louis Morgan on
  • I received my set of SEALIGHT LED HEADLIGHTS about Oct. 10 and installed them in Less than 15min!! Holy Crap. Best money I’ve spend in a long time. Bright white! These things are “Fabulous!”
    These were less than $50. Way cheaper, brighter and whiter than quartz halogen.
    If you don’t have these…. Order a pair Sealight. You’ll love ’em!
    Thanks guys for such a great product!

    Robert Harris on
  • LED Bulbs has been widely used and with a grander prospect. I also read an article about halogen lamp, HID lamp and LED lamp on LED lamp will be first choice but halogen lamp for inadequate budget.

    Rob on

Leave a comment


11/H8/H9 LED Headlight Bulbs 2019 3D printing Car Parts 9005/HB3 LED High Beam Headlight Bulbs Conversion Kit 9006/HB4 LED Headlight Bulbs 9145/H10 Fog Light Bulbs Advantages of LEDs amazon and Brighter Red LEDs artificial intelligence Augmented Reality automobile industry automotive lighting Auxbeam auxillary light back lights backlights battery beams of the headlight bend lighting LED headlamps bikes black friday Blue Brightness bulb size guide Burn Time buying a Smart Car car accessories Car interiors car lights car parts Car Sharing celebration christmas clean headlight Color determination Consumption of energy conventional lighting Cost Effectiveness custom headlights customization cyber monday deal of the day DIY Tips Dome driverless cars driving experience Durability Easy customization end of season environment-friendly festival fog lamps Ford Ford F-150 Fuel saving future gallium arsenide gallium phosphide glove box Green and Ultraviolet LEDs H11/H16/H8/H9 LED Headlight Bulbs halloween halloween makeover Halogen halogen bulbs halogen lighting headlight headlight bulbs HID lighting innovation installation Installation of a LED kit Intensity invention knowledge base KOITO laser headlights Laser Lighting LED LED Backup Light Bulbs led bulbs led conversion kit LED headlight kits LED lights LED Upgrade Lifespan light bulb Light Emission Light Emitting Diode lighting Lights Lumen Output Magneti Marelli Map materials new car models new cars new years Newer materials night drive nissan nissan maxima 2019 offers OLED oracle lighting Orange OSRAM Power Consumption prop radar and lidar radiation Red LEDs road trip S1 Series Headlights S2 Series Headlights Safety sale sealight shop by vehicle Smart Car Step tail lamps tail lights thanksgiving transmission oil tyres upgraded kits of the fog lights valentines day valentines sale Valeo Waymo windshield wiper fluid Working efficiently X1 Series Headlights Yellow