Method of manufacturing a coating on a display window and a display device comprising a display window provided with a coating
AssigneeU.S. Philips Corporation
InventorsWilhelmus J. J. Wakelkamp, Leonardus T. M. Van Hout, Angelina C. L. Van De Poel, Johannes M. A. A. Compen
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Abstract
A display device (1) with a display window (3) provided with an anti-static, light-absorbing coating (9) on the basis of silicon dioxide comprising an electroconductive, light-absorbing pigment or dye, for example soot (carbon black). A method of providing the display window (3) with an anti-static, light-absorbing coating (9).
Claims16
A method of manufacturing an anti-static, light-absorbing coating (9) on a display window (3), characterized in that a suspension comprising an alkoxy-silane compound and an electroconductive, light-absorbing pigment or dye is provided on the display window (3) and dried, whereafter the anti-static, light-absorbing coating (9) is formed by means of a treatment at an increased temperature, during which temperature treatment the alkoxy-silane compound is converted to silicon dioxide, and the resultant anti-static, light-absorbing coating (9) consists of one layer.
A method of manufacturing an anti-static, light-absorbing coating (9), consisting of more than one layer on a display window (3), characterized in that a porous layer (10) of particles of an electroconductive, light-absorbing pigment or dye is applied to the display window, whereafter a second layer (11) of an alkoxy-silane compound is applied, said alkoxy-silane compound penetrating the first layer (10) and, subsequently, said alkoxy-silane compound being converted to silicon dioxide by means of a treatment at an increased temperature.
A display device comprising a display window (3) provided with an anti-static, light-absorbing layer (9), characterized in that the anti-static, light-absorbing layer (9) comprises an electroconductive, light-absorbing pigment or dye in silicon dioxide, which pigment or dye is responsible for the electric conductance as well as for the light transmission of the layer (9).
Dependencies are inferred from the claim text.