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.
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
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