Patent ID: 11934065
Assignee: AUO CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 18:
19. A display device, comprising:
a substrate;
a first light emitting element and a second light emitting element, disposed on the substrate, wherein the first light emitting element emits a first light, the first light has a first wavelength range, the second light emitting element emits a second light, and the second light has a second wavelength range;
an optical film sheet, disposed above the first light emitting element and the second light emitting element, wherein the optical film sheet comprises a first zone and a second zone, the first zone comprises a first cholesteric liquid crystal, the first cholesteric liquid crystal reflects light in at least the first wavelength range, the second zone comprises a second cholesteric liquid crystal, and the second cholesteric liquid crystal reflect light in at least the second wavelength range,
wherein the first cholesteric liquid crystal and the second cholesteric liquid crystal are always in planar states.