An American inventor created the first working liquid crystal display in 1970. Prior to this, such devices consumed too much power had a limited lifespan, and had poor image contrast. The new displays were called LCDs. They were initially used in the displays of calculators and quartz watches. LCD graphics have a much greater ability to represent information than single-diode and segment displays and are characterized by the fact that they can display numbers, letters, and special characters. LCD graphic display modules include various polariser options in reflective as well as transmissive versions with much better contrast or transflective (sunlight readable and battery powered).
What are LCD graphic displays?
Graphic liquid crystal displays are identified by the number of pixels in the vertical and horizontal directions. Each of these dots sometimes called a pixel, can be turned on and off independently of each other. The client uses software to tell each dot when to turn on and off. Due to the sophistication of the LCD controller, some LCD graphics products already have multiple images in memory, which greatly helps engineers reduce the workload and greatly accelerate time-to-market. LCD monitors or TVs are equipped with two glass plates. Between the boards is a specific fluid with the primary task of changing the polarisation of light. Graphic display modules have a choice of display technologies, from low-cost TN, HTN, to higher-end STN (super twisted nematic), vertical alignment LCD for even higher quality wide viewing angles, and FFSTN, automotive ASTN, to meet different requirements, blue STN, grey STN, FSTN.
Purpose of use
Any app that needs to display more than just words and numbers can make use of a graphic LCD display. Each graphic LCD is ideal for products requiring monochrome or multi-color graphic solutions. In addition, a wide range of applications allows the modules to spread their wings – from GPS to viewfinders in digital cameras and camcorders, in video projection systems, to games and fish finders. Orient Display’s graphic LCD modules have most of the available interfaces, I2C, SPI, parallel 6800, 8080, MCU, etc. Liquid crystal displays are used wherever clear and readable information is required. Many electronic devices use an LCD graphic display as part of the control panel. Such appliances can be household appliances, including air conditioners. Remember that before buying any display, the most important thing for you should be the functions it fulfills, which will definitely make your decision easier and even enable you to make a good choice.
The LCD is a very good option for those involved in electronics and programming, whether as a hobbyist or professional. The built-in serial interface and specialized control circuitry make it easy to connect the LCD to a microcontroller. They are often created for universal use and for everyone, i.e. for washing machines, cookers, air conditioners, vending machines, as well as many automation devices in the broad sense.