Image panel having composite image using color changing with backlight illumination

    公开(公告)号:US11681173B2

    公开(公告)日:2023-06-20

    申请号:US17218479

    申请日:2021-03-31

    CPC classification number: G02F1/133331 G09G3/342 G09G3/3413 F21V2200/20

    Abstract: Embodiments of an image panel are provided. The image panel includes a transparent substrate having a first major surface and a second major surface opposite the first major surface. A first image layer is disposed on the second major surface. A diffuser layer is disposed on the first image layer, and a second image layer is disposed on the diffuser layer. The second image layer includes mask regions and image regions. An optical density of the image panel is at least 3.0 in the mask regions and less than 3.0 in the image regions. The image regions are not visible from the first major surface when light is not incident upon the second major surface. The image regions are visible from the first major surface and form a composite image with the first image layer when light is incident upon the second major surface.

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