tft lcd backlight driver pricelist

To support these applications we have developed our own range of Smart LED Converters to provide the best control over modern LED backlights, and allow the customer to configure the backlight converter to their exact needs.

For more information on our LED Backlight Drivers please contact us today on 01480 411600 to see how we can help you find the perfect display solution.

This NMLCD-101-40BV is a color active matrix thin film transistor (TFT) IPS liquid crystal display (LCD) that uses amorphous silicon TFT as a switching device. It is composed of a TFT LCD panel, Driver IC, FPC and Backlight, This TFT LCD has a 10.1-inch diagonally measured active display area with (1280 horizontal by 800 vertical pixel) resolution.ItemSpecificationUnit

We"re one of the leading 10.1 inch 1280*800 lcd backlight adjustable suppliers in China. With advanced technology, we can assure you the high resolution and good performance of our products. Welcome to get the free sample and the price list from our factory.

Now, I do not have experience with backlight, but it seems to me that their choice of a driver is far from optimal. First, MIC2289 is a booster designed to drive up to 34V diodes in series, while the display has five LEDs in parallel. Second, the chip requires external components for soft-start, while many of the alternatives have that built-in.

While looking through LED drivers at digikey I realized that this particular application falls into weird "grey area" because of the way the LEDs are connected. The majority of chips are either step-ups designed to drive series of diodes from single lithium battery in mobile applications, or step-downs designed for higher voltage sources in lighting/automotive applications.

The display datasheet says backlight should be driven by constant current 100mA and "for the reference only" implies that this would require 2.8V to 3.4V. In my case there is 3.3V available from on-board DC-DC, which falls smack-dab in that range. So, any step-up seems to be wrong, for that potential 0.1V difference. Step-downs could be OK, but I don"t know if they really necessary. There are some linear chips like BCR421U that can do the job just fine with only one external resistor, while dissipating 0.05 Watt in the worst case and supporting nice 25kHz PWM dimming.

QUESTION: Which driver topology would you recommend? Do you know of any drivers better suitable for this application and requiring minimum external components?

To complement the wide range of displays available, Midas Displays can offer a wide selection of accessories. These include bespoke connectors, cables, interconnect solutions, LED backlight drivers, and control driver development/interface boards.