What is the Difference in LED and EL Backlight Brightness for a Transflective LCD Display Module vs. a Transmissive LCD Display Module?
- Published on Wednesday, 29 December 2010 20:10
- Written by admin
The LED or EL backlight on Character LCD modules, Graphic LCD modules and Segment LCD modules have different levels of brightness depending on the type of polarizer that is installed.
Here you can find additional information on LCD display polarizer’s
When ordering an FSTN display, STN display or TN display with a backlight you have the option of two polarizers: Transflective and Transmissive.
The advantage of the transmissive polarizer on a monochrome LCD display equipped with an LED or EL backlight is that the backlight will be brighter. The disadvantage of the transmissive polarizer is that you can only read the LCD module when the backlight is “ON”.
The advantage of the Transflective polarizer on a LCD display module is that you will be able to read the LCD module with the backlight “OFF”, but the backlight will not be as bright.
The photos below are of a custom LCD module
with these characteristics: TN, positive mode with a white LED backlight.
The display on the Left is transmissive. The display on the right is Transflective.