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AssigneeBBC Brown, Boveri & Company, Limited
InventorsRino Doriguzzi, Markus Egloff, Meinolph Kaufmann, Jurgen Nehring, Terry J. Scheffer
Estimating the term…
A novel light scattering reflector and methods of making and using it are disclosed. The reflector, which can advantageously be used in conjunction with liquid crystal displays, includes a layer carrier formed of glass or rigid PVC foil. The layer carrier is roughened by sandblasting, impressing with a grooved die, or by other techniques to provide an irregular surface. A reflective metal coating is subsequently evaporated onto the roughened surface to complete the reflector structure. Auxiliary materials may also be coated onto the layer carrier to improve the characteristics of the device.
A liquid crystal display device comprising a twisted nematic liquid electro-optical crystal cell and a reflector, the reflector comprising a layer carrier provided with depressions of bubble-like structure and a thin, compared to the depth of the depressions, highly reflective layer applied upon the depression-comprising surface of the layer carrier, the layer carrier comprising a material selected from the group consisting of glass, plastic and metal and the reflective layer comprising a metal selected from the group consisting of silver, aluminum, gold and copper.
A reflector with a light-scattering surface of liquid crystal displays operated in reflection, comprising:
A method for the manufacture of a reflector with a light-scatteringsurface for liquid crystal displays operated in reflection having a layer carrier comprising a material selected from the group consisting of glass, plastic and metal provided with depressions and having a thin highly reflective layer comprising a metal selected from the group consisting of silver, aluminum, gold and copper evaporated upon the depression-provided surface of the layer carrier comprising the steps of:
A method for manufacturing a reflector with a light-scattering surface for liquid crystal displays operated in reflection having a layer carrier comprising a material selected from the group consisting of glass, plastic and metal provided with depressions and having a thin highly reflective layer comprising a metal selected from the group consisting of silver, aluminum, gold and copper applied upon the depression-provided surface of the layer carrier comprising the steps of generating depressions in the layer carrier by impressing the layer carrier with a stamping device and evaporating the thin highly reflective metal layer in a high vacuum.
A method for manufacturing a reflector with a light-scattering surface for liquid crystal displays operated in reflection having a layer carrier comprising a material selected from the group consisting of glass, plastic and metal provided with depressions and having a thin highly reflective layer comprising a metal selected from the group consisting of silver, aluminum, gold and copper applied upon the depression-provided surface of the layer carrier comprising the steps of applying a highly reflective metal layer on the layer carrier and generating depressions in the highly reflective metal layer and in the layer carrier by impressing the highly reflective metal layer and the layer carrier with a stamping device.
Dependencies are inferred from the claim text.