LCD Glossary

AMOLED Single RGB Pixel -


May 17, 2016 3:35 pm

AMOLED is Active Matrix OLED. An Active Matrix OLED uses a TFT (Thin Film Transistor) transistor-per-pixel architecture. Using a transistor-per-pixel... View Article

Array LED Backlight -


April 28, 2016 5:01 pm

A backlight is used behind the LCD glass to allow the LCM to be read in dark conditions. The vast... View Article


August 8, 2016 12:41 pm

CGRAM stands for Character Generator RAM. Character LCDs include a fixed CGROM to define the bulk of the characters they... View Article

Sample CGROM -


August 8, 2016 12:36 pm

CGROM stands for Character Generator ROM. The CGROM stores the font that is displayed on a character LCD. When you tell... View Article


August 8, 2016 12:51 pm

DDRAM stands for Display Data RAM. The Display Data RAM holds the letters that get shown on the LCD of... View Article

Electrophoretic Display (ED)

August 1, 2016 2:03 pm

Electrophoresis is defined1 as The migration of electrically charged molecules through a fluid or gel under the influence of an electric field.”... View Article



August 16, 2016 4:27 pm

ESD stands for ElectroStatic Discharge. Objects can have an electrical charge built up on them — this is called an... View Article

Signal Example for I2C -


May 3, 2016 4:49 pm

I2C or IIC stands for “Inter-Integrated Circuit,” and was originally intended as a way to communicate from one IC to... View Article

LCD Glass Back Panel -


April 26, 2016 5:45 pm

LCD stands for Liquid Crystal Display. An LCD is composed of two pieces of glass with a thin layer of... View Article

COG Construction LCD Module -


April 27, 2016 2:36 pm

LCM stands for Liquid Crystal Module or LCD Module. An LCM consists of an LCD or “LCD glass” and a... View Article

Arduino Shield With Graphic Display

Liquid Crystal (LC)

April 28, 2016 4:17 pm

LC stands for Liquid Crystal (sometimes also referred to as liquid crystal fluid or LC fluid, although technically redundant).  The... View Article

An Array of OLED colors from


May 10, 2016 1:54 pm

OLED stands for Organic Light Emitting Diode. OLEDs are used to make OLED Displays, which can either be PMOLED (Passive... View Article


July 10, 2017 1:15 pm

PCN stands for Product Change Notification See also: FAQ: Product Update and Change Notifications

Single Pixel Monochrome PMOLED -


May 17, 2016 2:52 pm

PMOLED is Passive Matrix OLED — Passive Matrix Organic Light Emitting Diode. Passive Matrix refers to the arrangement of the... View Article

Crystalfontz Product Change and Update Notification page


July 10, 2017 1:15 pm

PUN stands for Product Update Notification See also: FAQ: Product Update and Change Notifications

Sample CGROM -


August 8, 2016 12:28 pm

RAM stands for Random Access Memory. This is memory that may be written to some value, then later read. RAM is... View Article

122x250 ePaper Display -

Reflective LCD

June 7, 2017 10:09 am

A reflective LCD depends on having sufficient ambient light to reflect in order to be read. A reflective LCD does... View Article

Sample CGROM -


August 8, 2016 12:29 pm

ROM stands for Read Only Memory. This is memory that is factory pre-programmed to hold some data. ROM is data... View Article

4-wire SPI Connection -


May 3, 2016 10:58 am

SPI stands for Serial Peripheral Interface. SPI is a simple serial bus that is often used by LCD or OLED... View Article


April 6, 2017 4:29 pm

STN stands for Super-Twisted Nematic. STN is the commonly used LCD material in passive character and graphic LCDs.

TFT touchscreen -


October 31, 2016 2:46 pm

TFT stands for Thin Film Transistor. TFTs are also known as “Active Matrix TFT LCD modules” and have an array of... View Article

Crystalfontz 128x64 Graphical LCD Module

Transflective LCD

June 7, 2017 9:51 am

TRANSFLECTIVE is a portmanteau of TRANSmissive and reFLECTIVE. A transflective LCD combines the best features of a reflective LCDs and... View Article

Crystalfontz 240x320 2.2" Full Color TFT LCD

Transmissive LCD

June 7, 2017 9:59 am

A transmissive LCD depends on light from its backlight being transmitted through the LCD to your eyes. Transmissive LCDs are... View Article

ZIF Connector Operation -


February 9, 2017 10:59 am

ZIF: Short for Zero Insertion Force connector. This kind of connector is intended to be used with FPC (Flexible Printed... View Article