A transflective liquid crystal display panel, comprising: an active matrix substrate structure comprising a first substrate; a liquid crystal layer; an opposite substrate structure comprising a second substrate, an internal reflector and a plurality of colour filters supported on the second substrate, wherein a portion of the internal reflector is covered by the colour filters the opposite substrate structure being arranged on the opposite side of the liquid crystal layer to the active matrix substrate structure, the opposite substrate structure having an outer face facing away from the liquid crystal layer for receiving light from a backlight; an optical film (230; 250) supported on the second substrate between the second substrate and the liquid crystal layer; characterised in that the internal reflector comprises: a plurality of first reflective patterns, for reflecting light provided by a backlight incident through the outer face of the opposite substrate structure, whose surfaces that face away from the liquid crystal layer are smooth and wherein at least part of the first reflective patterns is covered by the colour filters; and a plurality of second reflective patterns, for reflecting light that is incident on the opposite substrate structure from the liquid crystal layer back towards the liquid crystal layer, the plurality of second reflective patterns defining a plurality of reflective regions in the opposite substrate structure, wherein the surface of the plurality of second reflective patterns that face the liquid crystal layer are bumpy. an active matrix substrate structure comprising a first substrate; a liquid crystal layer; an opposite substrate structure comprising a second substrate, an internal reflector and a plurality of colour filters supported on the second substrate, wherein a portion of the internal reflector is covered by the colour filters the opposite substrate structure being arranged on the opposite side of the liquid crystal layer to the active matrix substrate structure, the opposite substrate structure having an outer face facing away from the liquid crystal layer for receiving light from a backlight; an optical film (230; 250) supported on the second substrate between the second substrate and the liquid crystal layer; characterised in that the internal reflector comprises: a plurality of first reflective patterns, for reflecting light provided by a backlight incident through the outer face of the opposite substrate structure, whose surfaces that face away from the liquid crystal layer are smooth and wherein at least part of the first reflective patterns is covered by the colour filters; and a plurality of second reflective patterns, for reflecting light that is incident on the opposite substrate structure from the liquid crystal layer back towards the liquid crystal layer, the plurality of second reflective patterns defining a plurality of reflective regions in the opposite substrate structure, wherein the surface of the plurality of second reflective patterns that face the liquid crystal layer are bumpy. a plurality of first reflective patterns, for reflecting light provided by a backlight incident through the outer face of the opposite substrate structure, whose surfaces that face away from the liquid crystal layer are smooth and wherein at least part of the first reflective patterns is covered by the colour filters; and a plurality of second reflective patterns, for reflecting light that is incident on the opposite substrate structure from the liquid crystal layer back towards the liquid crystal layer, the plurality of second reflective patterns defining a plurality of reflective regions in the opposite substrate structure, wherein the surface of the plurality of second reflective patterns that face the liquid crystal layer are bumpy.