Frequently Asked Questions

Our support team sometimes notices they’ve received the same question a few times. When that occurs, we add it to our FAQ queue, to make a blog post accessible to everyone. These FAQs include how to get devices working, questions about the display industry, questions about microcontrollers, and more! Do you have a question not covered here? Contact Crystalfontz Support.

What is the Difference Between OLED, PMOLED, and AMOLED?

128 x 64 Graphic OLED

Confused about the differences (and similarities) between OLEDs, PMOLEDs, and AMOLEDs? Quick Version: OLED stands for Organic Light Emitting Diode. PMOLED is Passive Matrix OLED — Passive Matrix Organic Light Emitting Diode. AMOLED is Active Matrix OLED. An Active Matrix OLED uses a TFT (Thin Film Transistor) transistor-per-pixel architecture. Learn More To find out more … Read more What is the Difference Between OLED, PMOLED, and AMOLED?

LCD Glossary

Edge LED Backlight - www.crystalfontz.com

Wondering how LCDs are constructed? How liquid crystals create an image? Or how backlights arranged for best viewing? What about different types of connections (SPI and I2C) and ways to drive LCD displays? So many questions. We have answers — check out the new Crystalfontz LCD Glossary. Growing Glossary of LCD Terminology and Acronyms This glossary will … Read more LCD Glossary

New Product: Arduino and LCD Module Bundles

Arduino With Graphic LCD

Crystalfontz America announces three new supporting products for the128x64 pixel COG (Chip-On-Glass) graphic LCD display module series of displays based on the CFA10072 carrier board. 128×64 Graphic LCD Breakout Kit Using SPI or 8-bit parallel interface, simply connect the standard 20-pin header (0.100″ pitch) to your system’s PCB, using WR-JMP-Y40 jumper wires. No soldering required. … Read more New Product: Arduino and LCD Module Bundles

Tutorial: Connecting a TFT Display Using an Arduino or SparkFun Board

In the video tutorial below, the Crystalfontz 128×128 SPI Color TFT display is connected using 4-wire SPI mode and a SparkFun RedBoard. The software demonstrates bit-banged software SPI, or can use hardware SPI. Please see our tech forum for the complete step-by-step written tutorial. One of our Twitter followers posted this update, using an Arduino-compatible board … Read more Tutorial: Connecting a TFT Display Using an Arduino or SparkFun Board

FAQ: How Do I Display an Image on the Crystalfontz 835 LCD Module?

CFA835 - 244x68 Graphic LCD - Crystalfontz

Question: How do I display an image on CFA835 module using the RS232 interface? Answer:  You can send an image directly from your host application, or read it off the uSD card. Image Requirements for Use on an LCD Module The image needs to be a BMP, grayscale, 8 bits/pixel, no compression, Microsoft Windows format only. … Read more FAQ: How Do I Display an Image on the Crystalfontz 835 LCD Module?