2 Types of TFT-LCD Backlight

Author : China TFT-LCD supplier

Update time : 2019-10-09 10:46:36

There are two common TFT-LCD backlight options: LED backlight and CCFL backlight.

1. CCFL backlight.

Cold cathode fluorescent lamp (CCFL) is a kind of AC driven backlight, which needs inverter to convert DC to AC. Ac signals and inverters may produce EMI (electromagnetic interference) and arcs; for intrinsically safe products, arcs must be eliminated.

CCFL is still available, but is becoming a legacy (obsolete) component. TFT displays with CCFL require a higher MOQ (minimum order quantity) than LED backlight displays.

If this is a new design, it is recommended that you choose LED as the backlight option.

2. LED backlight.

LED backlight is driven by DC and is the most commonly used backlight technology in TFT. There are two different LED backlight options: RGB and white.

a. RGB LED backlight.

Red, green, and blue (RGB) backlight consists of one LED that produces red, green, and blue colors or three separate red, green, or blue LED.

The RGB backlight requires a controller to adjust the different intensity of each color. The function of the controller is to combine the unique red, green and blue levels to produce any of the 64m different colors.

b. White LED backlight.

White LED is actually a blue LED, with yellow phosphor that gives the impression of white light.

Previous : 8 Advantages of TFT LCD Screens

Next : What Is TFT LCD Screen?

LCD Controller Boards: Everything You Need to Know

Mar .31.2023

Discover LCD Controller Boards: The Ultimate Guide. Learn everything you need to know about these essential components, from types to functions. Improve your electronics knowledge today!

2023: The Best Brand of LCD Display Screens for Your Needs

Mar .27.2023

Discover the Best Brands of LCD Display Screens for Your Needs" - This informative article explores the advantages of top brands like Samsung, Dell, XIANHENG, BOE, and INNOLUX for those seeking high-quality LCD displays.

OLED vs LCD: What's the Difference and Which is Better?

Mar .25.2023

Whether OLED or LCD is the best choice based on whether you're in the market for a new screen or smartphone. Although each system has pros and drawbacks, you should be knowledgeable of some major variances between the two while making a purchase. We'll discuss the distinctions between OLED and LCD in this article and guide you in picking the appropriate one for your needs.

Understanding 800x1280 Resolution and How to Use It

Mar .21.2023

This article briefly describes the 800x1280 resolution and how to use it, which will help you understand and choose the 800x1280 resolution when purchasing LCD screens.