Our Display Backlight Customisation Services

A critical design element for any display is the backlight. The level of ambient light in which your display is being used will determine the brightness of the backlight-enabling both transflective and transmissive displays to be visible.

Backlight choice obviously depends on specific application, performance requirements and electrical considerations.

Anders can help enhance the brightness of your display in several ways:

  • Adding more LEDS
  • Adding Double Brightness Enhancement Films (DEBF)
  • Using high bright LED chips
  • Adding high powered LEDs

Other considerations for improved performance:

  • Automotive grade and long-life LEDs
  • RGB Colour LEDS for Monochrome LCDs
  • Heatsinks for thermal management and prolonged life
  • Built in LED driver circuits
  • PWM dimming functionality/brightness control

LED Array

LED chips are soldered directly to a PCB board and then epoxy encapsulated. The chip form LEDs shine directly toward the LCD display and through a diffuser on the front surface of the backlight to evenly distribute direct light.

LED arrays are often used on the smaller low-information content displays, such as character displays and simple monochrome icon-based TN display types. They’re typically used in the yellow-green color range because this provides the maximum light output at the lowest cost.

  • Low cost and highly uniform
  • Rather limited in their spectrum due to the LED chip costs and the additional thickness required to house the light array.

 

Edge Lit LEDs

In contrast to LED arrays, the edge lit LEDs are formed around the rim of the screen, using a special diffusion panel to spread the light evenly behind the screen. This accomplishes a uniform backlight system where the entire surface is the same luminance independent of the actual distance from the LED light source.

  • Much thinner design and fewer LEDs
  • Require less power therefore reducing costs.

 

Return to Display Customisation

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