Short, precise definitions of the terms you will meet in datasheets and supplier conversations.
COG is a construction where the display driver IC is bonded directly onto the LCD glass, reducing module size and connection count.
An FPC is a thin flexible circuit that connects a display panel to the host board, usually terminated in a ZIF connector or soldered pads with a specified pin count and pitch.
IPS is an LCD technology in which liquid crystal molecules rotate parallel to the glass, giving wide viewing angles (typically 85° in all directions) and stable colors compared with TN panels.
MIPI DSI is a high-speed serial display interface defined by the MIPI Alliance that sends pixel data over 1–4 differential data lanes plus a clock lane, widely used by mobile and embedded SoCs.
Nits measure luminance: one nit equals one candela per square meter. Display brightness is quoted in nits; indoor displays are typically 250–500 nits and sunlight-readable displays 1000 nits or more.
Optical bonding is the process of filling the air gap between a display and its cover glass or touch panel with a clear adhesive (OCA or OCR), which removes internal reflections and improves sunlight readability, durability and touch accuracy.