Electrowetting display devices with a reflective plate structure

An electrowetting display device, comprising:

• a first substrate and an opposing second substrate with a transparent polar fluid layer and an opaque non-polar fluid layer interposed therebetween;
• a first transparent electrode disposed on the first substrate;
• a second transparent electrode disposed on the second substrate;
• a dielectric layer disposed on the second transparent electrode;
• a reflective plate structure interposed between the second transparent electrode and the second substrate, and having a plurality of reflective regions and a plurality of transmission regions;
• and
• a backlight plate disposed on the back of the second substrate;
• configured such that during operation, the opaque non-polar fluid converges by application of a voltage exceeding a threshold voltage to expose areas of the reflective regions and areas of the transmission regions, wherein the exposed areas of the reflective regions are equal to the exposed areas of the transmission regions.