发明名称 |
Display board |
摘要 |
A display board has a light transmitting substrate illuminated by a light source at the back side, a illuminance adjusting layer having a plurality of light reflective dots and formed on the surface at the front side of the substrate, and a colored light transmitting image layer formed on the illuminance adjusting layer. This display board is manufactured by forming a illuminance adjusting layer and image layer sequentially on the same side of the substrate.
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申请公布号 |
US5247429(A) |
申请公布日期 |
1993.09.21 |
申请号 |
US19910795772 |
申请日期 |
1991.11.21 |
申请人 |
NIPPONDENSO CO., LTD. |
发明人 |
IWASE, TERUHIKO;IMAI, TAKASHI;KOURA, TOSHIO |
分类号 |
G01D11/28;F21S8/00;F21V9/10;G09F13/00;G09F13/04;G12B11/02 |
主分类号 |
G01D11/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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