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Pseudo-luminous panel, substrate therefor, and display element and device using the pseudo-luminous panel
| Details |
Inventors: Wakatake, Yoshimasa;
Assignee: Wakatake; Masayuki (Happy Valley, HK)
Primary Examiner: Ben; Loha
Assistant Examiner: Juba, Jr.; John
Attorney, Agent or Firm: Sixbey, Friedman, Leedom & Ferguson, Ferguson, Jr.; Gerald J.
A pseudo-luminous panel has a substrate and a thin film optical color filter formed all over the main surface of the substrate with or without a reflecting film interposed therebetween. The main surface of the substrate is formed by obliquely downward and upward band-like surface portions alternately arranged side by side in a vertical direction. Obliquely downward band-like surface portions of the reflecting film, formed on the obliquely downward band-like surface portions of the substrate, or the obliquely downward band-like surface portions of the substrate are each a smooth reflecting surface. Obliquely upward band-like surface portions of the reflecting film, formed on the obliquely upward band-like surface portions of the substrate, or the obliquely upward band-like surface portions of the substrate are each an irregular or uneven reflecting surface. With the pseudo-luminous panel of such a structure, it is possible to prevent that a pattern on the panel is too dazzling in the daytime and too dark at night to recognize in a predetermined hue when the panel is disposed above ground outdoors. |
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DETAILED DESCRIPTION It is therefore an object of the present invention to provide a novel pseudo-luminous panel which is free from the above-mentioned defects of the prior art, and a substrate for such a panel and a display element and a display device utilizing such a pseudo-luminous panel.
According to a first aspect of the present invention, the pseudo-luminous panel has a substrate and a thin film optical color filter coated all over the main surface of the substrate.
The main surface of the substrate is a surface in which obliquely downward and upward band-like portions are alternately arranged side by side in the vertical direction.
The obliquely downward band-like portions each form a smooth reflecting surface, and the obliquely upward band-like portions each form an irregular or uneven reflecting surface.
Obliquely downward band-like portions of the thin film optical color filter, formed on the obliquely downward band-like portions of the substrate on the opposite side therefrom, are smooth.
According to a second aspect of the present invention, the pseudo-luminous panel has a substrate and a thin film optical color filter coated all over the main surface of the substrate.
The main surface of the substrate is a surface in which obliquely downward and upward band-like portions are alternately arranged side by side in the vertical direction.
The obliquely downward and upward band-like portions forming the main surface of substrate are each a smooth reflecting surface, obliquely downward band-like portions of the thin film optical color filter, formed on the obliquely downward band-like portions of the substrate on the opposite side therefrom, are smooth surfaces.
Obliquely upward band-like portions of the thin film optical color filter, formed on the obliquely upward band-like portions of the substrate on the opposite side therefrom, are uneven.
According to a third aspect of the present invention, the pseudo-luminous panel has a substrate, a reflecting film coated all over the main surface of the substrate and a thin film optical color filter coated all over the surface of the reflecting film on the opposite side from the substrate
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