▎ 摘　　要

NOVELTY - The backlight has a first insulating layer (113) formed between an upper substrate (118) and a lower substrate (111). Multiple graphene quantum dot layers (116) i.e. reduction-oxidation graphene, are arranged on a second insulating layer (115) i.e. oxide graphene. Each graphene quantum dot layer is provided with a source electrode (117a) and a drain electrode (117b). Upper and lower surfaces of the second insulating layer are provided with multiple distantly arranged concave parts. The lower substrate is formed with a reflective layer (112). USE - Graphene-based backlight for a field sequential LCD device (claimed). ADVANTAGE - The backlight saves a color filter in an LCD panel so as to improve an energy utilization rate of a backlight source, thus reducing power consumption, and can realize a color field sequential display and precise area control light capacity, and avoids color crosstalk. DETAILED DESCRIPTION - The lower substrate and the upper substrate are a waterproof oxygen isolation substrate. An INDEPENDENT CLAIM is also included for a field sequential LCD device driving method. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a graphene-based backlight. Lower substrate (111) Reflective layer (112) Insulating layers (113, 115) Graphene quantum dot layers (116) Source electrode (117a) Drain electrode (117b) Upper substrate (118)