Patent ID: 11953738
Assignee: BENQ MATERIALS CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A display, comprising:
a display panel; and
a light redirecting film disposed on a light-exiting side of the display panel, comprising:
a light redistribution layer including:
a plurality of strip-shaped micro prisms extending along a first direction and arranged at intervals; and
a plurality of diffraction gratings arranged on bottoms of the intervals between the adjacent strip-shaped micro prisms, wherein each of the strip-shaped micro prisms has at least one inclined light-guide surface, and the bottom of each interval has at least one set of the diffraction gratings; and

a light guide layer disposed on the light redistribution layer, and in contact with the strip-shaped micro prisms and the diffraction gratings;

wherein a viewing angle extension ratio at 75% of the normalized maximum brightness of the display is more than 1.0, and a viewing angle extension ratio at 40% of the normalized maximum brightness of the display is more than 1.3.