The invention discloses an inorganic flexible LED color display screen and a preparation method. The preparation method comprises the following steps: forming a flexible circuit board by using a layerof a basic layer, multiple
layers of insulating
layers and multiple
layers of
electrode layers, wherein the basic layer is a bottom layer, and successively and alternately installing the insulating layers and the
electrode layers on the basic layer; selecting PET
polyester plate or PI
polyimide plate, plating a layer of a conducting film on the plate,
etching a common circuit to prepare the basiclayer through a
laser; using PI
polyimide solution, and preparing the insulating layers by using silk-
screen printing; using conducting ink containing nano-silver carbon, and preparing the electrodelayers by using 3D ink-jet printing; and finally, pasting an LED light-emitting device on the flexible circuit board by using a
chip mounter, and covering by a protecting layer prepared by transparentflexible protecting glue. The display has the characteristics of good flexibility, light weight of a finished product, convenient installation, and small influence to
luminescence uniformity and visual effect after curled. The preparation method is capable of overcoming a
bottleneck of large-scale display screen preparation, and guaranteeing the preparation of the inorganic flexible LED color display screen.