Learn in the textbookOutput Devices (Display and Printing)
DefinitionA liquid crystal display (LCD) (液晶ディスプレイ) is a device that shows images by having liquid crystal (液晶) pass or block light shining from behind.
ExplanationLiquid crystal does not glow by itself, so a backlight (バックライト) sits at the back of the screen and voltage changes how its light passes at each dot to make light and dark. An image is a collection of pixels (画素, tiny dots that show color), and the number of pixels in width × height is called the screen's resolution (解像度).
AnalogyIt works like window blinds. Just as tilting the slats lets outside light in or shuts it out to change how bright a room is, the screen makes light and dark the same way.
Memory hookLiquid crystal is a substance that flows like a liquid yet lines up like a crystal. Picture it as a gatekeeper that turns to let light through or not.