Patent ID: 11947137
Assignee: SHENZHEN SKYWORTH-RGB ELECTRONIC CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A composite membrane, comprising:
a base plate, the base plate is applied to correspond to a light source, a light-emitting surface of the base plate has a plurality of dispersive prism areas and a plurality of diffusion plates arranged, while the dispersive prism areas are corresponding to a plurality of lamp bead shadow areas, and the diffusion plates are corresponding to a plurality of non-lamp bead shadow areas;
a first coating layer with an equal area arranged on a light-emitting surface of the base plate at a position corresponding to the non-lamp bead shadow;
a plurality of diffusion particles arranged on the first coating layer, the plurality of diffusion particles being arranged in a matrix;
a second coating layer arranged on a light incidence surface of the base plate; and
a plurality of second diffusion particles arranged on a surface of the second coating layer against the base plate;
wherein at least one of the dispersive prism areas comprises a plurality of dispersive prisms arranged in a matrix;
a first quadrangular surface of each of the dispersive prisms is attached to the base plate; and
each of a second quadrangular surface and a third quadrangular surface of each of the dispersive prisms has a plurality of first diffusion particles arranged thereon.