solder lcd display supplier

Our new line of 10.1” TFT displays with IPS technology are now available! These 10.1” IPS displays offer three interface options to choose from including RGB, LVDS, and HDMI interface, each with two touchscreen options as capacitive or without a touchscreen.

The new line of 3.5” TFT displays with IPS technology is now available! Three touchscreen options are available: capacitive, resistive, or without a touchscreen.

Newhaven 24x2 character Liquid Crystal Display shows characters with dark pixels on a bright yellow/green background when powered on. This transflective LCD Display is visible with ambient light or a backlight while offering a wide operating temperature range from -20 to 70 degrees Celsius. This NHD-0224BZ-FL-YBW display has an optimal view of 6:00. This display operates at 5V supply voltage and is RoHS compliant.

Easily modify any connectors on your display to meet your application’s requirements. Our engineers are able to perform soldering for pin headers, boxed headers, right angle headers, and any other connectors your display may require.

Choose from a wide selection of interface options or talk to our experts to select the best one for your project. We can incorporate HDMI, USB, SPI, VGA and more into your display to achieve your design goals.

PIN connection is the most widely used connection because it is very steady. Unfortunately, not everyone is an expert at soldering. Every now and then, we can hear customers complaining about the high failure rate after the PINs were soldered on PCB. And I was always wondering if they did the soldering properly. More often than not, it’s the soldering problem. It’s not the quality problem of LCD screen itself. We feel it is our obligation to do some tests to help those who lack experience.

In order to test the impact of the soldering temperature, we deliberately made it 350 degrees Celsius far higher than the normal. The soldering iron head was placed at the distance of 4.0 mm from bottom of LCD screen.

It only took about 4.0 seconds to melt the glue before it bubbled. It would cool down in a few seconds after the soldering iron head was removed and then it solidified slowly and shrank when it was completely cooled.

One interesting idea was that we located the PIN which was responsible for the missing segments of LCD screen and re-soldered it with overheated temperature. Pulled the PIN down a little, which would make it temperately connect in normal again. We could see it displaying the whole diagram for a while. When we were glad that we fixed the LCD screen, the old problem repeated again. It was easy to understand because the overheated temperature damaged the glue and turned the chemical composition into something else. Now the LCD screen was completely damaged and was unrepairable.

Let us try another experiment. We soldered the perfectly normal LCD screen with overheated temperature. It was as sure as the sun comes from the east that the old missing segment problem recurred. I am going to remind everyone here don’t ever solder the PINs with overheated temperature because it will definitely cause the missing segment problem.

Let us hit the PINs with overheated temperature while we don’t use the UV glue to fasten the positions of the PINs. Wait. Is it possible not to use UV glue? Of course, it isn’t. It is never able to fasten the PINs without UV glue. This was just an experiment to explain what would happen in a hypothetical situation. Now we continued the experiment. We put a 350 degree Celsius soldering iron head directly on PIN for 10 seconds and more until the polarizer turned yellow. To our surprise, the LCD screen was working perfectly fine. Now we could conclude that it was UV glue which was overheated that caused the missing segments and other problems. But we can’t make a LCD screen without it.

1. The distance from the soldering iron head to the bottom of LCD screen should be at least 4.0 mm and the temperature should be below 260 degrees Celsius. The time should be less than 4 seconds for the soldering iron head on PINs to avoid making the glue bubble.

2. The soldering iron head should contact two adjacent PINs at the same time and make the heat transfer more evenly. It should form 30 degree angle with PINs because this will make contacting area larger and heat transfer faster. It will be a perfect heating condition if we can make the two adjacent PINs reach the same temperature at the same time.

3. It is forbidden to let the PINs bear any pressure while we are welding the PINs. In order to prevent the displacing of the PINs because of the pressure from outside, it is best if we lay the front surface of LCD screen flat on a table.