Posts Tagged ‘CCFL’

What’s the Difference? CCFL vs LED

Written by screentekinc. Posted in Tech Musings

led_ccfl We ship out thousands of replacement screens to our customers every month. A lot of questions arise when replacing a laptop screen, but one of the most frequent is whether you need a replacement panel with a CCFL backlight or an LED backlight and how to figure out which type is in your laptop. It’s important to know the difference since CCFL and LED screens are not interchangeable. Your laptop is designed for one type of backlight, so it’s either a CCFL panel or an LED panel. We want to sort out any confusion on the matter so we’re going to break down the differences in these two panels. Your laptop screen is made of a liquid crystal display (LCD) panel, but this panel does not produce light on its own. The LCD needs a light source to illuminate images for them to be visible on the screen. This illumination is created with a backlight. The backlight is referred to as a backlight because it is positioned on the back or side of the LCD panel. Component manufacturers are so clever when naming pieces, aren’t they? A backlight is built into an LCD panel and typically forms the last layer of the LCD screen. LCDs have lots of layers,  like an onion. The light source in the backlight is made of one of the following: -Cold Cathode Fluorescent Lamp (CCFL) -Light-Emitting Diode (LED) Now, there are a couple of ways to identify which type of backlight you have in your laptop. LED screens perform very well in direct light, if your screen has fantastic visibility in sunshine it may very well be an LED backlight. Age is another pretty good indicator – LEDs are a relatively new adoption in laptop technology, so if the laptop in question is more than a year or so old chances are you’re working with a CCFL backlight. To be absolutely sure you order the right LCD panel replacement, check the manufacturer’s website for your laptops specifications. Many models of laptops come in both a CCFL model and an LED model – a tip: the LED will be the more expensive model since this technology is still “new” in laptops. Maybe you’re considering a purchase between a traditional CCFL backlight laptop or an LED backlight laptop. We’ve put together a helpful comparison chart.
Size Thicker and heavier Thinner and lighter
Cost Cheaper and more cost effective More expensive, but are becoming more affordable as more laptop manufacturers are using LED backlights
Power Higher power consumption and heat generation Lower power consumption and heat generation
Brightness Lower brightness Generally higher brightness – much better for use in direct light
Finish Available in Matte or Glossy Available in Matte or Glossy
Lifespan Shorter lifespan Last longer than CCFLs
  We hope this makes understanding the difference between CCFL and LED backlights easier!

Term of the Day: Cold Cathode Fluorescent Lamp (CCFL) Tube

Written by screentekinc. Posted in Term of the Day

backlight-hand A Cold Cathode Fluorescent Lamp (CCFL) Tube is a small tube that provides a bright, white light for an LCD display. Inside the tube there is a low-pressure mercury vapor, which when ionized emits ultraviolet light. The inside of a fluorescent light is coated with phosphor, which can receive energy in a particular form and emit that energy in a visible form.
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