Saint-gobain Glass France

Yannick Lebail

Andre Beyrle

Dieter Hahn

Josef Switalla

Rainer Kummutat

Thomas Bertin-Mourot

The backprojection and/or projection screen comprises at least a first substrate joined to a scattering layer producing a subsurface effect, which offers a resolution of at least 5&#xd7;10dpi, the image being able to be displayed without blurring at a viewing angle of 180&#xb0; on both faces of the screen.

Projection and/or rear projection screen

The present invention relates to a method of manufacturing electrically conducting tracks on a transparent substrate, by screen printing with an electrically conducting paste, and to the transparent substrate provided with said tracks. According to the invention, conducting tracks are formed with a width less than or equal to 0.3 mm by applying, by screen printing, a thixotropic electrically conducting paste having a ratio of the viscosity without shear stress to the viscosity under shear stress under screen-printing conditions of at least 50 and having a silver content greater than 35% and of which at least 98% of the particles which form it have a size less than 25 &#x3bc;m, by means of a screen having at least 90 threads per cm, the coating of said screen being provided with slots, the narrowest width of which is equal to 0.25 mm&#xb1;0.05 mm, and by subjecting said tracks to baking.

Growing community of inventors

Chevincourt, France

Yannick Lebail