{
  "$type": "site.standard.document",
  "description": "A display apparatus includes a display board and at least one image generating device. The display board has at least one display region, which includes a substrate, a decorative film, and a holographic optical element film. The decorative film is disposed on one side of the substrate. The…",
  "path": "/patents/1394323",
  "publishedAt": "2025-07-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K35/00",
    "CORETRONIC CORP [TW]"
  ],
  "textContent": "A display apparatus includes a display board and at least one image generating device. The display board has at least one display region, which includes a substrate, a decorative film, and a holographic optical element film. The decorative film is disposed on one side of the substrate. The holographic optical element film is disposed in at least one of the at least one display region, and disposed on another side of the substrate relative to the decorative film. The substrate is disposed between the decorative film and the holographic optical element film. The at least one image generating device is configured to project image light toward the holographic optical element film. The holographic optical element film is disposed between the substrate and the image generating device. The holographic optical element film converts the image light into display light, and transmits the display light toward the substrate.",
  "title": "DISPLAY APPARATUS AND DISPLAY BOARD"
}