👉 The board fluid, also known as the liquid crystal alignment layer or the surface alignment layer, is a critical component in Liquid Crystal Displays (LCDs) that determines how the liquid crystal molecules align on the display's surface. It is typically applied to the glass substrates of LCD panels and is coated with a polymer that controls the orientation of the liquid crystal molecules when an electric field is applied. This alignment is essential for controlling light passage through the display, as it dictates how polarized light is modulated by the liquid crystals. The board fluid ensures that the liquid crystals maintain their orientation in the absence of an electric field, allowing for stable image formation, and when an electric field is applied, it reorients the crystals to block or transmit light, creating the visual output we see on the screen.
