An electrowetting display panel, comprising: a first substrate (21; 31); a second substrate (22; 37) opposite to the first substrate (21; 31); a plurality of baffle walls (23; 33) disposed on the second substrate (22; 37) and defining a plurality of sub-pixels; an opaque insulating layer disposed on the second substrate (22; 37), the opaque insulating layer (24; 40) comprising a dielectric layer and opaque liquid elements disposed on the dielectric layer; a plurality of coloured liquid elements (25; 32) corresponding to the individual sub-pixels respectively and disposed between the opaque insulating layer (24; 40) and the first substrate (21; 31), the coloured liquid elements (25; 32) being an electric-conductive or a polar light-transmissive coloured solution; and a plurality of pixel electrodes corresponding to the individual sub-pixels respectively and disposed between the second substrate (22; 37) and the opaque insulating layer (24; 40), characterized in that the pixel electrodes are black and opaque, the opaque insulating layer (24; 40) comprises a transparent dielectric layer disposed on the second substrate (22; 37) and white opaque liquid elements corresponding to the individual sub-pixels respectively and disposed on the transparent dielectric layer, the coloured liquid elements (25; 32) and the white opaque liquid elements in the individual sub-pixels being immiscible; or in that the pixel electrodes are white and opaque, the opaque insulating layer (24; 40) comprises a transparent dielectric layer disposed on the second substrate (22; 37) and black opaque liquid elements corresponding to the individual sub-pixels respectively and disposed on the transparent dielectric layer, the black opaque liquid elements and the coloured liquid elements being immiscible. a first substrate (21; 31); a second substrate (22; 37) opposite to the first substrate (21; 31); a plurality of baffle walls (23; 33) disposed on the second substrate (22; 37) and defining a plurality of sub-pixels; an opaque insulating layer disposed on the second substrate (22; 37), the opaque insulating layer (24; 40) comprising a dielectric layer and opaque liquid elements disposed on the dielectric layer; a plurality of coloured liquid elements (25; 32) corresponding to the individual sub-pixels respectively and disposed between the opaque insulating layer (24; 40) and the first substrate (21; 31), the coloured liquid elements (25; 32) being an electric-conductive or a polar light-transmissive coloured solution; and a plurality of pixel electrodes corresponding to the individual sub-pixels respectively and disposed between the second substrate (22; 37) and the opaque insulating layer (24; 40), characterized in that the pixel electrodes are black and opaque, the opaque insulating layer (24; 40) comprises a transparent dielectric layer disposed on the second substrate (22; 37) and white opaque liquid elements corresponding to the individual sub-pixels respectively and disposed on the transparent dielectric layer, the coloured liquid elements (25; 32) and the white opaque liquid elements in the individual sub-pixels being immiscible; or in that the pixel electrodes are white and opaque, the opaque insulating layer (24; 40) comprises a transparent dielectric layer disposed on the second substrate (22; 37) and black opaque liquid elements corresponding to the individual sub-pixels respectively and disposed on the transparent dielectric layer, the black opaque liquid elements and the coloured liquid elements being immiscible.