Patent ID: 8675273

Claim:
A switchable transparent electrowetting display device, comprising: an electrowetting display panel, comprising: a first transparent substrate, wherein the first transparent substrate is a display side of the switchable transparent electrowetting display device; a second transparent substrate, disposed oppositely to the first transparent substrate; a plurality of pixel units, each of the pixel units comprising: a plurality of first electrodes, disposed on the first transparent substrate and corresponding to a first sub-pixel region and a second sub-pixel region, wherein each of the first electrodes has a first opening corresponding to the first sub-pixel region and the second sub-pixel region, respectively; at least one second electrode, disposed on the second transparent substrate and corresponding to the first sub-pixel region and the second sub-pixel region; a liquid layer, disposed between the first electrodes and the at least one second electrode, wherein the liquid layer is grounded; a first optical color-converting liquid layer, disposed on the first electrode and corresponding to the first sub-pixel region for providing a first color light in the first sub-pixel region; a second optical color-converting liquid layer, disposed on the first electrode and corresponding to the second sub-pixel region for providing a second color light in the second sub-pixel region; a plurality of light-shielding liquid layers, disposed between the at least one second electrode and the liquid layer, wherein the light-shielding liquid layers correspond to the first sub-pixel region and the second sub-pixel region, respectively, for controlling transmittances of the first sub-pixel region and the second sub-pixel region, respectively; and a plurality of shielding patterns corresponding to the first opening of each of the first electrodes, respectively; and a light-emitting unit, for providing a light source to the electrowetting display panel.