Patent ID: 8106861

Claim:
An electro-wetting display device, comprising: a first substrate; a second substrate opposite to the first substrate; a plurality of side walls interposed between the first and second substrates, the side walls being arranged in a matrix and cooperating with the first and second substrates to form a plurality of spaces; a first polar liquid disposed in each of the spaces; a second, colored, non-polar liquid disposed in each of the spaces, and the second liquid being immiscible with the first liquid; and wherein the second substrate comprises a reflective electrode and a hydrophobic insulating layer disposed on the reflective electrode, the reflective electrode comprises a first metal layer and a transparent protective layer, the first metal layer liable to form hillocks on a surface of the first metal layer and configured to provide a voltage, and the transparent protective layer has a smooth surface, the transparent protective layer is disposed on the first metal layer and interposed between the first metal layer and the hydrophobic insulating layer, the hydrophobic insulating layer contacts with the smooth surface of the transparent protective layer and is prevented from contacting with the hillocks of the first metal layer by the transparent protective layer.