LCD display panel
Almost all displays today are made using LCD modules technology. An LCD display consists of 2 glass plates and a liquid in between. TFT displays are also LCD displays, only expanded by a color filter and active control via a transistor. There are many different versions: text, graphics, 7-segment and icon-based versions. The 7-segment display was an early form of LCD displays and was installed in calculators and watches.
Text displays often helped service technicians and users to check the status of devices and make entries. Buy them here.