Patent ID: 11927878
Assignee: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  B  H | IPC B  G  H

Claim 13:
14. A projection display system, comprising a projector, a controller, and a projection screen, wherein the controller is connected to a transparent touch panel of the projection screen and is connected to the projector, the controller is configured to control the projector based on a touch signal outputted by the transparent touch panel to perform projection display, and the projection screen comprises a first transparent cover plate, a transparent touch panel, and a first nanoparticle layer, wherein the first nanoparticle layer and the first transparent cover plate are sequentially laminated on one side of the transparent touch panel, and the first nanoparticle layer comprises a plurality of dispersed nanoparticles of different particle sizes; and
wherein the projection screen further comprises a second transparent cover plate and a second nanoparticle layer, the second nanoparticle layer and the second transparent cover plate are sequentially laminated on the other side of the transparent touch panel, and the second nanoparticle layer comprises a plurality of dispersed nanoparticles of different particle sizes.