6 Common Concepts in Backlight Solutions -CCFL, WLED, DLED, ELED, Mini LED, PWM

The backlight solution is directly related to the visual effect and power consumption of the display. As the light-source and a key component of the display, it accounts for 15%-35% of the entire cost of the LCD.

CCFL

Figure 1. CCFL of Backlight
Figure 1. CCFL of Backlight

WLED

DLED

ELED

Direct-lit-LED-and-Edge-lit-LED
Figure 2. Direct-lit LED and Edge-lit LED

Mini LED

Figure 3. Mini OLED of Backlight
Figure 3. Mini OLED of Backlight
Figure 4. 21.5-inch LCD with mini LED, the brightness can reach 3000nits and even higher
Figure 4. 21.5-inch LCD with mini LED, the brightness can reach 3000nits and even higher
Figure 5. Pulse Width Modulation (PWM)
Figure 5. Pulse Width Modulation (PWM)

PWM

Global Dimming 

Local Dimming

1D area dimming

2D area dimming

2D-area-dimming
Figure 6. 2D area dimming
How does the LCD Work? (tailorpixels.com)

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