Information display device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorMasaharu Matsumoto
Life of this patent
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Abstract
An information display device is attachable to a structure, and includes a display panel and a surface member. The display panel has a display surface and is configured to display information on the display surface. The surface member is disposed on a display surface side of the display panel and is configured such that only the information displayed on the display surface of the display panel is visible through the surface member when the display panel is turned on. The surface member includes a first layer disposed on a front side, and a second layer disposed on the display panel side with respect to the first layer. The second layer is configured to compensate for a difference of transmittance depending on a position on the first layer.
Claims4
An information display device attachable to a structure, the information display device comprising:
- a display panel including a display surface, the display panel being configured to display information on the display surface;
- and
- a surface member disposed on a side of the display surface of the display panel, the surface member being configured such that only the information displayed on the display surface of the display panel becomes visible through the surface member when the display panel is turned on,
- wherein:
- the surface member includes a first layer and a second layer, the first layer being disposed on a front side, the second layer being disposed between the first layer and the display panel, and the second layer being configured to adjust light transmittance of the surface member;
- and
- the second layer is configured to compensate for a difference of light transmittance depending on a position on the first layer, light transmittance of the second layer being determined such that a product of light transmittance of the first layer and light transmittance of the second layer is the same at any portion of the surface member.
Dependencies are inferred from the claim text.